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[ { "doc_id": "12444325", "title": "A New Platform for the Determination of Air Sea Fluxes (OCARINA) Overview and First Results", "abstract": "The present paper describes a new type of floating platform that was specifically designed for estimating air sea fluxes, investigating turbulence characteristics in the atmospheric surface boundary layer, and studying wind wave interactions. With its design, it can be deployed in the open ocean or in shallow water areas. The system is designed to be used from a research vessel. It can operate for ~10 hours as a drifting wave rider and three hours under power. Turbulence and meteorological instrument packages are placed at a low altitude (1 1.5 m) It was deployed for validation purposes during the FROMVAR 2011 experiment off the west coast of Brittany (France) Wind friction velocity and surface turbulent buoyancy flux were estimated using eddy covariance, spectral, bulk and profile methods. The comparisons of the four methods show a reasonable agreement except for the spectral buoyancy flux. This suggests that the platform design is correct. Also the wind measured at a fixed height above the sea shows spectral coherence with wave heights, such that wind and swell are in phase, with largest wind values on top of swell crests. This result in qualitative agreement with current model predictions supports the capability of OCARINA to investigate wind swell interactions.", "corpus_id": 12444325, "venue": "", "year": 2014, "author_names": [ "Denis Bourras", "Hubert Branger", "Gilles Reverdin", "Louis Marie", "Remi Cambra", "Lucio Baggio", "Christophe Caudoux", "Gerard Caudal", "Simon Morisset", "Nicolas Geyskens", "Alain Weill", "Daniele Hauser" ], "n_citations": 8, "n_key_citations": 0, "score": 0 }, { "doc_id": "131407664", "title": "Coastal impacts in the lee of a wave energy site waves, beach morphology and water users (Wave Hub, Cornwall, UK)", "abstract": "COASTAL IMPACTS IN THE LEE OF A WAVE ENERGY SITE: WAVES, BEACH MORPHOLOGY AND WATER USERS (WAVE HUB, CORNWALL, UK) The Wave Hub facility in Cornwall (South West UK) is a marine renewables test site, predominantly designed for the purpose of trialling wave energy converters prior to commercialisation. Beach water users such as bathers and surfers are of economic importance to tourism in Cornwall, and during the Wave Hub consultation there were concerns among stakeholders that wave energy extraction would reduce the height and quality of coastal waves for sur ng, as well as a ecting sediment transport and beach morphology. This thesis investigates the interaction between wave conditions, beach morphology, and beach water users, and proposes how a wave climate altered by wave energy extraction is likely to alter these interactions. A multidisciplinary research approach is adopted, involving the collection of qualitative and quantitative social data, the collection of over 5 years of physical wave and beach morphology data, and predictive modelling of the e ects of an attenuated wave climate. Quantitative, structured interview data from 403 water users, collected at two beaches (Perranporth and Porthtowan) in the lee of Wave Hub, indicate that the population of water users in the area is predominantly made up of surfers (53% but bodyboarding and swimming/bathing are also popular activities (29% and 11% respectively) In depth semi structured interviews reveal that water user perceptions of wave energy extraction and its potential coastal impacts are constructed using intuitive risk perceptions, rather than technical understanding. These risk perceptions are constructed through a weighing of their perception of wave energy devices `technology' and their perception of the coastal environment `nature' To investigate how waves are perceived, nearshore wave buoy measurements collected in 14 m water depth and transformed to breaking height, are compared to concurrent visual observations of mean breaker height and period. On average water users underestimated signi cant wave height and period by 48% and 17% respectively. Accounting for variations in wave perception, the wave preferences of di erent water user groups are determined. Water users are found to share a common preference towards wave", "corpus_id": 131407664, "venue": "", "year": 2015, "author_names": [ "Christopher Stokes" ], "n_citations": 2, "n_key_citations": 1, "score": 1 }, { "doc_id": "53600251", "title": "A simplified wave enhancement criterion for moving extreme events", "abstract": "An analytical model is derived to efficiently describe the wave energy distribution along the main transects of a moving extreme weather event. The model essentially builds on a generalization of the self similar wave growth model and the assumption of a strongly dominant single spectral mode in a given quadrant of the storm. The criterion to anticipate wave enhancement with the generation of trapped abnormal waves defined as inline image, with inline image, inline image, and inline image, radial distance, average sustained wind speed, and translation velocity, respectively. Constants inline image and inline image follow the fetch law definitions. If forced during a sufficient time scale interval, also defined from this generalized self similar wave growth model, waves can be trapped and large amplification of the wave energy will occur in the front right storm quadrant. Remarkably, the group velocity and corresponding wavelength of outrunning wave systems will become wind speed independent and solely related to the translating velocity. The resulting significant wave height also only weakly depends on wind speed, and more strongly on the translation velocity. Compared to altimeter satellite measurements, the proposed analytical solutions for the wave energy distribution demonstrate convincing agreement. As analytically developed, the wave enhancement criterion can provide a rapid evaluation to document the general characteristics of each storm, especially the expected wavefield asymmetry.", "corpus_id": 53600251, "venue": "", "year": 2015, "author_names": [ "Vladimir N Kudryavtsev", "Pavel Golubkin", "Bertrand Chapron" ], "n_citations": 26, "n_key_citations": 2, "score": 1 }, { "doc_id": "41255128", "title": "Wireless backhaul for broadband communication over Sea", "abstract": "A comprehensive survey of different possible solutions to provide wireless backhaul PTP links for broadband communication over Sea is presented. The main purpose of wireless backhaul network is to provide LongDistance Point To Point (PTP) broadband communication. Wireless Backhaul gives a low cost solution for access to remote areas with difficult terrain to install any wired link. Long range backhaul network with high capacity and reliability is limited to line of sight (LOS) distances requiring high antenna towers for further increase in range. A mirror image of WiMax like system used on land can be envisaged on Sea to provide similar services at even non line of sight (NLOS) distances. Satellite communication can also provide large distance coverage for communication over Sea. Tropospheric propagation using evaporation ducts over Sea is also explored for long range wireless communication over Sea to achieve Trans horizon NLOS distances. Current work and future challenges regarding backhaul broadband communication over Sea with some proposed solutions are discussed at the end.", "corpus_id": 41255128, "venue": "2013 IEEE 11th Malaysia International Conference on Communications (MICC)", "year": 2013, "author_names": [ "Khurram Shabih Zaidi", "Varun Jeoti", "Azlan Awang" ], "n_citations": 20, "n_key_citations": 0, "score": 1 }, { "doc_id": "132212156", "title": "On the predominance of unstable atmospheric conditions in the marine boundary layer offshore of the U.S. northeastern coast", "abstract": "The marine boundary layer of the northeastern U.S. is studied with focus on wind speed, atmospheric stability, and turbulent kinetic energy (TKE) the three most relevant properties in the context of offshore wind power development. Two long term observational data sets are analyzed. The first one consists of multilevel meteorological variables measured up to 60 m during 2003 2011 at the offshore Cape Wind tower, located near the center of the Nantucket Sound. The second data set comes from the 2013 2014 IMPOWR campaign (Improving the Modeling and Prediction of Offshore Wind Resources) in which wind and wave data were collected with new instruments on the Cape Wind platform, in addition to meteorological data measured during 19 flight missions offshore of New York, Connecticut, Rhode Island, and Massachusetts. It is found that, in this region: (1) the offshore wind resource is remarkable, with monthly average wind speeds at 60 m exceeding 7 m s 1 all year round, highest winds in winter (10.1 m s 1) and lowest in summer (7.1 m s 1) and a distinct diurnal modulation, especially in summer; (2) the marine boundary layer is predominantly unstable (61% unstable vs. 21% neutral vs. 18% stable) meaning that mixing is strong, heat fluxes are positive, and the wind speed profile is often nonlogarithmic ~40% of the time) and (3) the shape of the wind speed profile (log versus nonlog) is an effective qualitative proxy for atmospheric stability, whereas TKE alone is not.", "corpus_id": 132212156, "venue": "", "year": 2016, "author_names": [ "Cristina L Archer", "Brian A Colle", "Dana L Veron", "Fabrice Veron", "Matthew J Sienkiewicz" ], "n_citations": 33, "n_key_citations": 0, "score": 2 }, { "doc_id": "4922191", "title": "Estimation of air water gas exchange coefficient in a shallow lagoon based on 222Rn mass balance.", "abstract": "The radon 222 mass balance is now commonly used to quantify water fluxes due to Submarine Groundwater Discharge (SGD) in coastal areas. One of the main loss terms of this mass balance, the radon evasion to the atmosphere, is based on empirical equations. This term is generally estimated using one among the many empirical equations describing the gas transfer velocity as a function of wind speed that have been proposed in the literature. These equations were, however, mainly obtained from areas of deep water and may be less appropriate for shallow areas. Here, we calculate the radon mass balance for a windy shallow coastal lagoon (mean depth of 6m and surface area of 1.55*10(8) m(2) and use these data to estimate the radon loss to the atmosphere and the corresponding gas transfer velocity. We present new equations, adapted to our shallow water body, to express the gas transfer velocity as a function of wind speed at 10 m height (wind range from 2 to 12.5 m/s) When compared with those from the literature, these equations fit particularly well with the one of Kremer et al. (2003) Finally, we emphasize that some gas transfer exchange may always occur, even for conditions without wind.", "corpus_id": 4922191, "venue": "Journal of environmental radioactivity", "year": 2015, "author_names": [ "Sabine Cockenpot", "Christelle Claude", "Olivier Radakovitch" ], "n_citations": 20, "n_key_citations": 2, "score": 1 }, { "doc_id": "55137947", "title": "Influence of bottom trawling on sediment resuspension in the 'Grande Vasiere' area (Bay of Biscay, France)", "abstract": "Sea trials were performed on two zones with different fishing efforts on the continental shelf of the Bay of Biscay 'Grande Vasiere' area of muddy sand) in order to assess particulate matter resuspension and seabed disturbances (i.e. penetration, reworking, grain size changes) induced by different types of trawls. Optical and acoustic measurements made in the water column indicate a significant trawling induced resuspension mainly due to the scraping action of doors. It manifests as a highly dynamic turbid plume confined near the seabed, where suspended sediment concentrations can reach 200 mg l 1. Concentration levels measured behind an \"alternative\" configuration (trawls with jumper doors instead of classical doors penetrating the sediment) are significantly lower (around 10 20 mg l 1) which indicates a potential limiting impact regarding the seabed. Grain size analyses of the surficial sediment led to highlight a potential reworking influence of bottom trawling. On the intensively trawled zone, this reworking manifests as an upward coarsening trend in the first 5 cm of the cores. A significant decrease in mud content (30 has been also witnessed on this zone between 1967 and 2014, which suggests an influence on the seabed evolution. The geometric analysis of bottom tracks (4 5 cm depth, 20 cm width) observed with a benthic video sledge was used to compute an experimental trawling induced erosion rate of 0.13 kg m 2. This erosion rate was combined with fishing effort data, in order to estimate trawling induced erosion fluxes which were then compared to natural erosion fluxes over the Grande Vasiere at monthly, seasonal and annual scales. Winter storms control the annual resuspended load and trawling contribution to annual resuspension is in the order of 1 However, results show that trawling resuspension can become dominant during the fishing high season (i.e. until several times the natural one in summer) In addition, the contribution of trawling induced resuspension is shown to increase with water depth, because of the rapid decay of wave effects. Finally, the seasonal evolution of the respective contributions for erosion (mainly trawling and waves) could be mapped for the whole study area.", "corpus_id": 55137947, "venue": "Ocean Dynamics", "year": 2016, "author_names": [ "Baptiste Mengual", "Florence Cayocca", "Pierre Le Hir", "Robin Draye", "Pascal Laffargue", "Benoit Vincent", "Thierry Garlan" ], "n_citations": 33, "n_key_citations": 4, "score": 1 }, { "doc_id": "135056227", "title": "Systematic Differences in Bucket Sea Surface Temperature Measurements among Nations Identified Using a Linear Mixed Effect Method", "abstract": "The International Comprehensive Ocean Atmosphere Dataset (ICOADS) is a cornerstone for estimating changes in sea surface temperatures (SST) over the instrumental era. Interest in determining SST changes to within 0.1degC makes detecting systematic offsets within ICOADS important. Previous studies have corrected for offsets among engine room intake, buoy, and wooden and canvas bucket measurements, as well as noted discrepancies among various other groupings of data. In this study, a systematic examination of differences in collocated bucket SST measurements from ICOADS3.0 is undertaken using a linear mixed effect model according to nations and more resolved groupings. Six nations and a grouping for which nation metadata are missing, referred to as \"deck 156,\" together contribute 91% of all bucket measurements and have systematic offsets among one another of as much as 0.22degC. Measurements from the Netherlands and deck 156 are colder than the global average by 0.10deg and 0.13degC, respectively, both at p 0.01, whereas Russian measurements are offset warm by 0.10degC at p 0.1. Furthermore, of the 31 nations whose measurements are present in more than one grouping of data (i.e. deck) 14 contain decks that show significant offsets at p 0.1, including all major collecting nations. Results are found to be robust to assumptions regarding the independence and distribution of errors as well as to influences from the diurnal cycle and spatially heterogeneous noise variance. Correction for systematic offsets among these groupings should improve the accuracy of estimated SSTs and their trends.", "corpus_id": 135056227, "venue": "Journal of Climate", "year": 2019, "author_names": [ "Duo Chan", "Peter J Huybers" ], "n_citations": 9, "n_key_citations": 1, "score": 1 }, { "doc_id": "125363339", "title": "Combined wave current scale model testing at FloWave", "abstract": "As part of a global drive to produce renewable electricity, devices are being designed to harness energy from the waves and tidal currents. Physical scale model testing is an important part of the development process for this and other technologies. The FloWave Ocean Energy Research Facility at The University of Edinburgh is designed to conduct these tests. Here it is possible to produce multi directional waves combined with currents in the circular tank, re creating the complexity of the ocean. The research was driven by commercial requirements of the facility, aiming to highlight what can be learnt from testing at scale with complex conditions in a controlled environment. To enable this, it was first necessary to extend the characterisation of this new facility. Wave generation and reflections were assessed in a previous project. In this work, flow measurements taken throughout the test volume of the tank, allowed spatial and temporal variations in the currents to be determined. Waves and currents interact in a complex manner, compounded by the method of reproducing them in a tank. The influence of currents on waves in the basin was assessed. This included cases with an oblique angle between them, on which little has been published. The other part of the project addressed issues to be considered when testing in a combined wave current basin such as FloWave. At many sites of interest for offshore renewable energy, waves are influenced by water depth. Implications of not scaling depth consistently were considered, and design diagrams produced to facilitate understanding and quantification of potential errors. At FloWave, waves are generated in still water around the outside of the tank. A process was therefore developed and verified to produce the desired combined conditions in the central test area following their interaction with the current. There is a wealth of published guidance on tank testing, for ships, offshore structures, and more recently renewable energy. This has been reviewed and suggestions offered to augment this by including testing in the more advanced conditions possible in a facility like FloWave. Tools and guidance have been developed to highlight many of the issues to be considered by clients prior to testing at FloWave. This aims to facilitate planning of a test programme by highlighting potential knowledge gaps and recording decisions made. Flowcharts have been produced to represent this graphically, with a corresponding checklist of questions for clients, which have been trialled in a pilot study. Outputs from this research are being used to help deliver both academic and commercial client tests at FloWave. The test area in currents was shown to be >50m2 with <10% variation in flow, and the combined wave current conditions possible have been explored. Results that are important when designing client test plans.", "corpus_id": 125363339, "venue": "", "year": 2018, "author_names": [ "Donald R Noble" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "111050293", "title": "METOCEAN DESIGN CONDITION FOR \"FUKUSHIMA FORWARD\" PROJECT", "abstract": "Metocean condition for the Fukushima FORWARD project is presented. Wind speeds and tsunami are predicted by Monte Carlo simulation and Tsunami simulation, respectively. For wave condition, extreme sea state and normal sea state are evaluated by published data and newly proposed wind wave and swell combination formula, respectively. Surface current and water level are evaluated by extreme value analyses of hindcast simulation and historical data, respectively.", "corpus_id": 111050293, "venue": "", "year": 2014, "author_names": [ "Takeshi Ishihara", "Kenji Shimada", "Akihiko Imakita" ], "n_citations": 3, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "22394319", "title": "Cumulative effects of single TMS pulses during beta tACS are stimulation intensity dependent", "abstract": "BACKGROUND Single transcranial magnetic stimulation (TMS) pulses activate different components of the motor cortex neural circuitry in a stimulation intensity dependent way and may lead to a cumulative increase of corticospinal excitability (CSE) during the same stimulation session. Furthermore, transcranial alternating current stimulation (tACS) has been shown to increase in a frequency specific way the level of CSE probed by single pulse TMS. The interaction of these two phenomena, i.e. cumulative increases and baseline shifts of CSE, and the involved neural circuitry has not been studied yet. OBJECTIVE The aim of this study was to investigate stimulation intensity specific online effects of simultaneous TMS and tACS on CSE. METHODS Single pulse TMS was applied concurrent to 20 Hz tACS over the left primary motor cortex of thirteen healthy subjects to probe CSE indexed by motor evoked potentials (MEPs) recorded from the contralateral extensor carpi radialis muscle of the right hand during rest. Six different TMS intensities (90% 100% 110% 120% 130% and 140% of resting motor threshold, RMT) were studied in a randomized blocked design. In each block, 40 pulses were applied with an inter stimulus interval of 5 s and a jitter of 0.5 s, i.e. at a stimulation frequency of 0.2 0.25 Hz. RESULTS Beta tACS has a general facilitatory effect on CSE across the tested TMS intensities. The results of the block wise regression of the MEP amplitudes show a more specific effect. Combining tACS and TMS leads to a cumulative increase in CSE for the stimulation intensity of 120% RMT only (p 0.0004) CONCLUSION CSE increases due to beta tACS and cumulative TMS pulses may be mediated by different neuronal mechanisms.", "corpus_id": 22394319, "venue": "Brain Stimulation", "year": 2017, "author_names": [ "Valerio Raco", "Robert Bauer", "Sandro Mango Norim", "Alireza Gharabaghi" ], "n_citations": 12, "n_key_citations": 0, "score": 1 }, { "doc_id": "219946654", "title": "Modulating Brain Rhythms of Pain using Transcranial Alternating Current Stimulation (tACS) A Sham controlled Study in Healthy Human Participants", "abstract": "Pain protects the body. However, pain can also occur for longer periods without serving protective functions. Such chronic pain conditions are difficult to treat. Thus, a better understanding of the underlying neural mechanisms and new approaches for the treatment of pain are urgently needed. Here, we investigated a causal role of oscillatory brain activity for pain and explored the potential of transcranial alternating current stimulation (tACS) as a new treatment approach for pain. To this end, we investigated whether tACS can modulate pain and pain related autonomic activity in 29 healthy human participants using a tonic heat pain paradigm as an experimental model of chronic pain. In 6 recording sessions, participants received tACS over prefrontal or somatosensory cortices at alpha or gamma frequencies or sham tACS. During tACS, pain ratings and autonomic responses were collected. TACS did not modulate pain intensity, the stability of pain ratings or the translation of the noxious stimulus into pain. Likewise, tACS did not change autonomic responses. Bayesian statistics further indicated a lack of tACS effects in most conditions. The only exception was alpha tACS over somatosensory cortex where evidence for tACS effects was inconclusive. Taken together, the present study did not find significant tACS effects on tonic experimental pain in healthy human participants. However, considering the conceptual plausibility of using tACS to modulate pain and the urgent need for novel pain treatments, further tACS studies are warranted. Based on the present findings, such studies might apply refined stimulation protocols targeting alpha oscillations in somatosensory cortices.", "corpus_id": 219946654, "venue": "", "year": 2020, "author_names": [ "Elisabeth S May", "Vanessa D Hohn", "Moritz M Nickel", "Laura Tiemann", "Cristina Gil Avila", "Henrik Heitmann", "Paul Sauseng", "Markus Ploner" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "14082895", "title": "The Effect of the Viewing Distance of Stimulus on SSVEP Response for Use in Brain Computer Interfaces", "abstract": "Most visual stimulators used in steady state visual evoked potential (SSVEP) based brain computer interface (BCI) to elicit SSVEP response are set close to the BCI system limiting the portability and the applications of the system. Our aim is to develop a portable SSVEP based BCI adaptable to the change of the viewing distance of the stimulator which will allow users to operate the BCI without being restricted to a particular area. This study (1) investigates the impact of the distance between the user and the visual stimulator on the SSVEP response and (2) develops a portable visual stimulator that would adapt to change of distance. The finding suggests that a distance adaptable SSVEP based BCI is achievable by changing the intensity of visual stimulator to correspond to the change of the viewing distance. It is hoped that this work can help SSVEP BCI design and broaden its potential applications and users.", "corpus_id": 14082895, "venue": "2013 IEEE International Conference on Systems, Man, and Cybernetics", "year": 2013, "author_names": [ "Chi-Hsu Wu", "Heba M Lakany" ], "n_citations": 14, "n_key_citations": 0, "score": 1 }, { "doc_id": "23834", "title": "Spectrum based feature extraction using spectrum intensity ratio for SSVEP detection", "abstract": "Recent years, a Steady State Visual Evoked Potential (SSVEP) is used as a basis for Brain Computer Interface (BCI)[1] Various feature extraction and classification techniques are proposed to achieve BCI based on SSVEP. The feature extraction of SSVEP is developed in the frequency domain regardless of the limitation in flickering frequency of visual stimulus caused by hardware architecture. We introduce here the feature extraction using a spectrum intensity ratio. Results show that the detection ratio reaches 84% by using a spectrum intensity ratio with unsupervised classification. It also indicates the SSVEP is enhanced by proposed feature extraction with second harmonic.", "corpus_id": 23834, "venue": "2012 Annual International Conference of the IEEE Engineering in Medicine and Biology Society", "year": 2012, "author_names": [ "Akitoshi Itai", "Arao Funase" ], "n_citations": 6, "n_key_citations": 1, "score": 1 }, { "doc_id": "159043116", "title": "Optimizing Spatial Contrast of a New Checkerboard Stimulus for Eliciting Robust SSVEPs", "abstract": "Most existing steady state visual evoked potential (SSVEP) based brain computer interfaces (BCIs) adopted low or medium frequency stimuli towards high information transfer rates (ITRs) However, the intense flashes will deteriorate the user experience. With the increase of stimulation frequency, the discomfort caused by flickering stimuli can be significantly reduced, but the amplitude of SSVEP is also decreased, which greatly increases the difficulty of SSVEP detection. To cope with the tradeoff between SSVEP intensity and user experience, this study proposed a new checkerboard stimulus scheme with spatially alternated flickering and background squares. This study compared black white, black, and white background checkerboard stimuli, together with a traditional single flickering stimulus in eliciting SSVEPs at different frequencies. The data analysis results showed that the signal to noise ratio (SNR) of SSVEP for the black background checkerboard stimulus was comparable to the single flickering stimulus, both of which were significantly higher than the other two checkerboard stimuli in the high frequency range (40 Hz and 60 Hz) Additionally, with a consensus of reduction in subjective visual irritation, the black background checkerboard stimulus can lead to improved user experience of the SSVEP based BCIs.", "corpus_id": 159043116, "venue": "2019 9th International IEEE/EMBS Conference on Neural Engineering (NER)", "year": 2019, "author_names": [ "Gege Ming", "Yijun Wang", "Weihua Pei", "Hongda Chen" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "199573251", "title": "Shift in lateralization during illusory self motion: EEG responses to visual flicker at 10 Hz and frequency specific modulation by tACS", "abstract": "Self motion perception is a key aspect of higher vestibular processing, suggested to rely upon hemispheric lateralization and alpha band oscillations. The first aim of this study was to test for any lateralization in the EEG alpha band during the illusory sense of self movement (vection) induced by large optic flow stimuli. Visual stimuli flickered at alpha frequency (approx. 10 Hz) in order to produce steady state visually evoked potentials (SSVEPs) a robust EEG measure which allows probing the frequency specific response of the cortex. The first main result was that differential lateralization of the alpha SSVEP response was found during vection compared with a matched random motion control condition, supporting the idea of lateralization of visual vestibular function. Additionally, this effect was frequency specific, not evident with lower frequency SSVEPs. The second aim of this study was to test for a causal role of the right hemisphere in producing this lateralization effect and to explore the possibility of selectively modulating the SSVEP response. Transcranial alternating current stimulation (tACS) was applied over the right hemisphere simultaneously with SSVEP recording, using a novel artefact removal strategy for combined tACS EEG. The second main result was that tACS enhanced SSVEP amplitudes, and the effect of tACS was not confined to the right hemisphere. Subsequent control experiments showed the effect of tACS requires the flicker frequency and tACS frequency to be closely matched and tACS to be of sufficient intensity. Combined tACS SSVEPs are a promising method for future investigation into the role of neural oscillations and for optimizing tACS.", "corpus_id": 199573251, "venue": "The European journal of neuroscience", "year": 2019, "author_names": [ "James Dowsett", "Christoph Siegfried Herrmann", "Marianne Dieterich", "Paul John Taylor" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "4865029", "title": "Transcranial Alternating Current Stimulation at Alpha Frequency Reduces Pain When the Intensity of Pain is Uncertain.", "abstract": "Alpha activity directly before pain onset has been implicated in pain experience with higher prestimulus alpha associated with lower reported pain. However, expectations about pain intensity also seem to affect prestimulus alpha activity. To date, evidence for a relationship between alpha activity and pain experience has been largely correlational. Transcranial alternating current stimulation at alpha frequency (alpha tACS) permits direct manipulation of alpha activity and therefore an examination of the potential causal relationship between alpha activity and pain. We investigated whether somatosensory alpha tACS could reduce pain experience and whether this was influenced by uncertainty about pain intensity. In a within subjects design, perceived pain intensity and unpleasantness were assessed in 23 participants during alpha tACS and sham stimulation. Visual cues preceding the pain stimulus were used to manipulate uncertainty. A significant tACS x Uncertainty x Stimulus intensity interaction was found for reported pain intensity (F2,44 4.50, P .017, partial e2 .17) and unpleasantness (F1,22 4.78, P .040, partial e2 .18) Pain experience during the application of somatosensory alpha tACS was significantly lowered compared with sham stimulation, but only when the intensity of an upcoming stimulus was uncertain. PERSPECTIVE To our knowledge, this is the first study to suggest that somatosensory alpha tACS might lead to a reduction in pain. Interventions targeting alpha activity may have the potential to alleviate chronic pain. However, a patient's expectation about the intensity of upcoming pain must also be taken into account.", "corpus_id": 4865029, "venue": "The journal of pain official journal of the American Pain Society", "year": 2018, "author_names": [ "Laura J Arendsen", "Siobhan Hugh-Jones", "Donna M Lloyd" ], "n_citations": 25, "n_key_citations": 1, "score": 0 }, { "doc_id": "69454202", "title": "Predictive Model for SSVEP Magnitude Variation: Applications to Continuous Control in Brain Computer Interfaces", "abstract": "The steady state visual evoked potential based brain computer interface (SSVEP BCI) is a typically recognized visual stimulus frequency from brain responses. Each frequency represents one command to control a machine. For example, multiple target stimuli with different frequencies can be used to control the moving speeds of a robot. Each target stimulus frequency corresponds to a speed level. Such a conventional SSVEP BCI is choice selection paradigm with discrete information, allowing users to discretely control the speed of a movable object. This can result in non smooth object movement. To overcome the problem, in this study, a conceptual design of a SSVEP BCI with continuous information for continuous control is proposed to allow users to control the moving speed of an object smoothly. A predictive model for SSVEP magnitude variation plays an important role in the proposed design. Thus, this study mainly focuses on a feasibility study concerning the use of SSVEP magnitude prediction for BCI. A basic experiment is therefore conducted to gather SSVEP responses from varying stimulus intensity using times with a fixed frequency. Random Forest Regression (RF) is outperformed by simple regression and neural networks in these predictive tasks. Finally, the advantages of the proposed SSVEP BCI is demonstrated by streaming real SSVEP responses from ten healthy subjects into a brain controlled robotic simulator. The results from this study show that the proposed SSVEP BCI containing both frequency recognition and magnitude prediction is a promising approach for future continuous control applications.", "corpus_id": 69454202, "venue": "", "year": 2018, "author_names": [ "Phairot Autthasan", "Xiangqian Du", "Binggwong Leung", "Nannapas Banluesombatkul", "Fryderyk Kogl", "Thanakrit Tachatiemchan", "Poramate Manoonpong", "Tohru Yagi", "Theerawit Wilaiprasitporn" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "53173791", "title": "P207 Affecting declarative long term memory with transcranial alternating current stimulation (tACS)", "abstract": "Introduction and objective Previous studies imply that tACS can entrain the ongoing physiological neuronal oscillations depending on the targeted function and the parameters (frequency, intensity and phase) of the stimulation. The aim of the present study was to clarify if tACScould influence the performance of healthy subjects on a verbal paired associate learning paradigm. Methods For that, we conducted three different crossover, randomized, single blind, placebo controlled studies, using a battery driven Starstim stimulator system (Neuroelectrics, Barcelona, Spain) In the first study n 6) we applied 100 Hz tACS with 1.5 mA (active electrode T7, return Fpz and T8) in the second one n 6) 1.0 mA, 6 Hz (3 s) followed by 80 Hz (5 s) tACS during ISI and Stimulus presentation using the same electrodes configuration; in the third one n 15) we combined a temporal and pre frontal stimulation using 7 electrodes. Here the stimulation intensity was 1 mA at 6 Hz (temporal) and 80 Hz (pre frontal) combined stimulation. For all the studies, we used 8 cm 2 round rubber electrodes inside a saline soaked sponge pocket, applying 10 min stimulation during the word pairs learning phase. After the learning phase, the subjects had a 10 min pause, followed by a test phase with a cued recall. The subjects returned after 24 h for a second cued recall test. All subjects receivedactive and sham tACS in a counterbalanced, randomized manner. Results In the first two studies, no significant difference were found in the accuracy performance between days across conditions, as well as between days within conditions; in the third study, we found no significant difference between days across conditions, but significant difference between days in the active t 2.98, p 0.010) and sham t 2.52, p 0.024) stimulation. Conclusion The stimulation parameters tested could not influence the memory performance assessed by this memory task with the present number of subjects in the first two studies. Further variations of waveforms, intensity and stimulation parameters should be tested with the same task in order to probe the possible influence of tACS on episodic long term memory. The final results will be presented in the conference.", "corpus_id": 53173791, "venue": "Clinical Neurophysiology", "year": 2017, "author_names": [ "Gabriel Amador de Lara", "I Alekseichuk", "Zsolt Turi", "Andrea Antal", "Walter Paulus" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "53263434", "title": "P189 Transcranial modulation of visually induced gamma power: a concurrent TACS MEG study", "abstract": "Introduction Alpha oscillations (8 12 Hz) are proposed to mediate 'attentional gating' by suppressing neuronal processing in task irrelevant sensory regions, reflected by 'pulsed inhibition' of stimulus induced gamma band activity (40 100 Hz) Concurrent TACS MEG has the potential to reveal TACS entrainment of alpha oscillations at the stimulation site and thus their causal impact on neuronal activity representing stimulus processing. Objectives We aimed to provide evidence that TACS can entrain the phase of alpha oscillations in the visual cortex by assessing its modulatory impact on the power of visual stimulus induced gamma oscillations via simultaneous MEG recordings. Materials methods TACS was applied during MEG in intermingled 5.4s trials either in Oz Cz or FPz Cz montage. Montage and stimulation frequency were randomized across trials, applying either individual alpha frequency (IAF) IAF 4 Hz, IAF+4 Hz, or no stimulation, resulting in a 2 (Montage) x 3 (Frequency) design plus a 'NoStim' condition. Stimulation intensity for both montages was adjusted separately to 95% retinal phosphene threshold. Participants performed a simple visual detection task, attending an inward moving grating, known to induce strong occipital gamma responses. TACS artifacts were reduced via regression methods, LCMV beamformer time course extraction from the visual cortex, and high pass filtering. Importantly, the gamma frequency of interest ~50 60 Hz) was largely unaffected by TACS artifacts. We compared TACS to gamma phase power coupling (PAC) for the respective experimental conditions. Results We found a rhythmic modulation of stimulus induced gamma power by TACS at IAF (i.e. TACS gamma phase amplitude coupling) for the Oz Cz montage, but not for the FPz Cz montage which was introduced to control for subthreshold retinal entrainment effects. Conclusion Our findings (i) demonstrate that concurrent TACS MEG can principally be used to study cross frequency coupling between transcranially entrained slower and spontaneous or stimulus related faster oscillations, (ii) cannot merely result from subthreshold retinal entrainment, and (iii) suggest that alpha oscillations are indeed a possible means for top down suppression of bottom up sensory processing.", "corpus_id": 53263434, "venue": "Clinical Neurophysiology", "year": 2017, "author_names": [ "Jim Don Herring", "Sophie Esterer", "Tom R Marshall", "Ole Jensen", "Til Ole Bergmann" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "190534735", "title": "Bosniak Classification of Cystic Renal Masses, Version 2019: An Update Proposal and Needs Assessment.", "abstract": "Cystic renal cell carcinoma (RCC) is almost certainly overdiagnosed and overtreated. Efforts to diagnose and treat RCC at a curable stage result in many benign neoplasms and indolent cancers being resected without clear benefit. This is especially true for cystic masses, which compared with solid masses are more likely to be benign and, when malignant, less aggressive. For more than 30 years, the Bosniak classification has been used to stratify the risk of malignancy in cystic renal masses. Although it is widely used and still effective, the classification does not formally incorporate masses identified at MRI or US or masses that are incompletely characterized but are highly likely to be benign, and it is affected by interreader variability and variable reported malignancy rates. The Bosniak classification system cannot fully differentiate aggressive from indolent cancers and results in many benign masses being resected. This proposed update to the Bosniak classification addresses some of these shortcomings. The primary modifications incorporate MRI, establish definitions for previously vague imaging terms, and enable a greater proportion of masses to enter lower risk classes. Although the update will require validation, it aims to expand the number of cystic masses to which the Bosniak classification can be applied while improving its precision and accuracy for the likelihood of cancer in each class.", "corpus_id": 190534735, "venue": "Radiology", "year": 2019, "author_names": [ "Stuart G Silverman", "Ivan Pedrosa", "James H Ellis", "Nicole M Hindman", "Nicola Schieda", "Andrew D Smith", "Erick M Remer", "Atul B Shinagare", "Nicole E Curci", "Steven S Raman", "Shane A Wells", "Samuel D Kaffenberger", "Zhen J Wang", "Hersh Chandarana", "Matthew S Davenport" ], "n_citations": 91, "n_key_citations": 8, "score": 0 }, { "doc_id": "221863075", "title": "MRI based Bosniak Classification of Cystic Renal Masses, Version 2019: Interobserver Agreement, Impact of Readers' Experience, and Diagnostic Performance.", "abstract": "Background The 2019 Bosniak classification (version 2019) of cystic renal masses (CRMs) provides a systematic update to the currently used 2005 Bosniak classification (version 2005) Further validation is required before widespread application. Purpose To evaluate the interobserver agreement of MRI criteria, the impact of readers' experience, and the diagnostic performance between version 2019 and version 2005. Materials and Methods From January 2009 to December 2018, consecutive patients with CRM who had undergone renal MRI and surgical pathologic examination were included in this retrospective study. On the basis of version 2019 and version 2005, all CRMs were independently classified by eight radiologists with different levels of experience. By using multirater k statistics, interobserver agreement was evaluated with comparisons between classifications and between senior and junior radiologists. Diagnostic performance between classifications by dichotomizing classes I IV into lower (I IIF) and higher (III IV) classes was compared by using the McNemar test. P .05 was considered to indicate a statistically significant difference. Results A total of 207 patients (mean age standard deviation, 49 years 12; 139 male and 68 female patients) with CRMs were included. Overall, interobserver agreement was higher with version 2019 than version 2005 (weighted k 0.64 vs 0.50, respectively; P .001) Interobserver agreement between senior and junior radiologists did not differ between version 2019 (weighted k 0.65 vs 0.64, respectively; P .71) and version 2005 (weighted k 0.54 vs 0.46; P .001) Diagnostic specificity for malignancy was higher with version 2019 than with version 2005 (83% [92 of 111] vs 68% [75 of 111] respectively; P .001) without any difference in sensitivity (89% [85 of 96] vs 84% [81 of 96] P .34) Conclusion In the updated Bosniak classification, interobserver agreement improved and was unaffected by observers' experience. The diagnostic performance with version 2019 was superior to that with version 2005, with higher specificity. Published under a CC BY 4.0 license. Online supplemental material is available for this article. See also the editorial by Choyke in this issue.", "corpus_id": 221863075, "venue": "Radiology", "year": 2020, "author_names": [ "Xu Bai", "Song-Mei Sun", "Wei Xu", "Huan-Huan Kang", "Lin Li", "Ye-Qiang Jin", "Qing-Ge-Le Gong", "Guo-Cheng Liang", "Hong-yan Liu", "Lin-Lin Liu", "Si-Lu Chen", "Qing-Rong Wang", "Peng Wu", "Ai-Tao Guo", "Qing-Bo Huang", "Xiao-Jing Zhang", "Huiyi Ye", "Haiyi Wang" ], "n_citations": 11, "n_key_citations": 0, "score": 1 }, { "doc_id": "219549196", "title": "Bosniak Classification Version 2019 of Cystic Renal Masses Assessed With MRI.", "abstract": "OBJECTIVE. The purpose of this study was to determine how use of Bosniak classification version 2019 affects categorization and overall accuracy of MRI evaluation of cystic renal masses with tissue pathologic analysis as the reference standard. MATERIALS AND METHODS. MR images of 50 consecutively registered patients with tissue pathologic results from 2005 to 2019 were retrospectively reviewed by two abdominal radiologists. Each radiologist independently assigned a category based on the original and Bosniak classification version 2019 systems. Interreader agreements (kappa statistic) for both were calculated, and consensus reading was performed. Tissue pathologic analysis was used as the reference standard to determine whether a lesion was benign or renal cell carcinoma. RESULTS. Fifty nine cystic renal masses were characterized as 38 renal cell carcinomas and 21 benign lesions on the basis of the results of tissue pathologic analysis. By consensus, according to the original Bosniak criteria, the renal masses were classified into three category I, five category II, four category IIF, 25 category III, and 22 category IV lesions. By consensus, according to the version 2019 criteria, the renal masses were classified into three category I, two category II, 12 category IIF, 18 category III, and 24 category IV lesions. Overall sensitivity and specificity for identifying renal cell carcinoma were 95% and 81% respectively, with the original classification system and 100% and 86% respectively, with version 2019. Weighted interreader agreement was moderate for both the original system (k 0.57) and version 2019 (k 0.55) CONCLUSION. Use of Bosniak classification version 2019 system improves sensitivity and specificity for malignancy among cystic renal masses characterized with MRI. Most lesions that changed categories were reclassified as Bosniak category IIF.", "corpus_id": 219549196, "venue": "AJR. American journal of roentgenology", "year": 2020, "author_names": [ "Justin Ruey Tse", "Jody Shen", "Luke Yoon", "Aya Kamaya" ], "n_citations": 8, "n_key_citations": 1, "score": 1 }, { "doc_id": "221015865", "title": "Bosniak Classification of Cystic Renal Masses Version 2019: Comparison of Categorization using CT and MRI.", "abstract": "Please see the Author Video associated with this article. Background: Bosniak Classification, version 2019 recently proposed refinements for cystic renal mass characterization and now formally incorporates MRI, which may improve concordance with CT. Purpose: To compare concordance of CT and MRI in evaluation of cystic renal masses using Bosniak Classification, version 2019. Materials and Methods: In this IRB approved and HIPAA compliant study, three abdominal radiologists (R1 R3) retrospectively reviewed 68 consecutive cystic renal masses from 45 patients assessed with both CT and MR renal mass protocols within a year between 2005 2019. CT and MRI were reviewed independently and in separate sessions, using both the original and version 2019 Bosniak Classification systems. Results: Using Bosniak Classification, version 2019, cystic renal masses were classified into 12 category I, 19 category II, 13 category IIF, 4 category III, and 20 category IV by CT and 8 category I, 15 category II, 23 category IIF, 9 category III, and 13 category IV by MRI. Among individual features, MRI depicted more septa (p<0.001, p=0.046, p=0.005 for R1 R3; McNemar's test) for all radiologists, though both CT and MRI showed a similar number of protrusions (p=0.823, 1.0, 0.302) and maximal septa/wall thickness (p=1.0, 1.0, 0.145) Of discordant cases with version 2019, MRI led to the higher category in 12 masses. Reason for upgrade was most commonly due to protrusions identified only on MRI (n=4) increased number of septa (n=3) and a new category of heterogeneously T1 hyperintense (n=3) Neither modality was more likely to lead to a category change for both version 2019 (p=0.502; McNemar's test) and the original Bosniak classification system (p=0.823) Overall inter rater agreement was substantial for both CT (k=0.745) and MRI (k=0.655) using version 2019 and was slightly higher than that of the original system (CT k=0.707; MRI k=0.623) Conclusion: CT and MRI were concordant in the majority of cases using Bosniak Classification, version 2019 and category changes by modality were not statistically significant. Inter rater agreements were substantial for both CT and MRI. Clinical Impact: Bosniak Classification, version 2019 applied to cystic renal masses has substantial inter rater agreement and does not lead to systematic category upgrades with either CT or MRI.", "corpus_id": 221015865, "venue": "AJR. American journal of roentgenology", "year": 2020, "author_names": [ "Justin Ruey Tse", "Jody Shen", "Luyao Shen", "Luke Yoon", "Aya Kamaya" ], "n_citations": 7, "n_key_citations": 1, "score": 1 }, { "doc_id": "228169107", "title": "EFSUMB 2020 Proposal for a Contrast Enhanced Ultrasound Adapted Bosniak Cyst Categorization Position Statement.", "abstract": "The well established Bosniak renal cyst classification is based on contrast enhanced computed tomography determining the malignant potential of cystic renal lesions. Ultrasound has not been incorporated into this pathway. However, the development of ultrasound contrast agents coupled with the superior resolution of ultrasound makes it possible to redefine the imaging of cystic renal lesions. In this position statement, an EFSUMB Expert Task Force reviews, analyzes, and describes the accumulated knowledge and limitations and presents the current position on the use of ultrasound contrast agents in the evaluation of cystic renal lesions.", "corpus_id": 228169107, "venue": "Ultraschall in der Medizin", "year": 2020, "author_names": [ "Vito Cantisani", "Michele Bertolotto", "Dirk-Andre Clevert", "Jean-Michel Correas", "Francesco Maria Drudi", "Thomas Fischer", "Odd Helge Gilja", "Antonio Granata", "Ole Graumann", "Christopher J Harvey", "Andre Ignee", "Christian Jenssen", "Markus Herbert Lerchbaumer", "Matthew Ragel", "Adrian Saftoiu", "Andreas L Serra", "Konrad Friedrich Stock", "Jolanta Webb", "Paul S Sidhu" ], "n_citations": 8, "n_key_citations": 0, "score": 1 }, { "doc_id": "224822929", "title": "Prevalence of Malignancy and Histopathologic Association of Bosniak Classification, Version 2019 Class III and IV Cystic Renal Masses.", "abstract": "PURPOSE Bosniak Classification, version 2019 (v2019) describes two types of class III and IV masses each: 1) thick, wall/septa =4 mm (III WS) 2) obtuse protrusion =3 mm (III OP) 3) obtuse protrusion =4 mm (IV OP) and 4) acute protrusion of any size (IV AP) The purposes were to determine the prevalence of malignancy and histopathologic features of class III and IV masses and subclasses. MATERIALS AND METHODS In this IRB approved and HIPAA compliant study, three fellowship trained abdominal radiologists (R1 3) reviewed cystic renal masses that had tissue pathology and pre operative renal mass protocol CT or MRI. Classes based on v2019 and prior classification systems were retrospectively re assigned and associated with malignancy, aggressive histologic features (necrosis or high Fuhrman grade) and radiologic progression following resection. RESULTS The final sample included 79 masses (59 malignant, 20 benign) from 74 patients. Based on v2019, prevalence of malignancy ranged from 56 61% (mean 60% for class III and 83 83% (mean 83% for class IV (p=0.036, 0.013, 0.036 for R1 3) Prevalence of malignancy within subclasses were: III WS (47 53% III OP (71 85% IV OP (75 87% IV AP (87 95% p=0.029, 0.001, 0.005) All readers were more likely to classify malignancies with aggressive histologic features as class IV (88 100% rather than class III (0 12% p=0.012, <0.001, 0.002) corresponding to a negative predictive value of 96 100% Following treatment (mean follow up length 1210 days) one patient developed metastases. CONCLUSIONS Bosniak Classification, version 2019 can help risk stratification of class III IV masses by identifying those likely to be malignant and have aggressive histologic features.", "corpus_id": 224822929, "venue": "The Journal of urology", "year": 2020, "author_names": [ "Justin Ruey Tse", "Luyao Shen", "Jody Shen", "Luke Yoon", "Aya Kamaya" ], "n_citations": 4, "n_key_citations": 1, "score": 0 }, { "doc_id": "220294259", "title": "Stratification of cystic renal masses into benign and potentially malignant: applying machine learning to the bosniak classification", "abstract": "Purpose To create a CT texture based machine learning algorithm that distinguishes benign from potentially malignant cystic renal masses as defined by the Bosniak Classification version 2019. Methods In this IRB approved, HIPAA compliant study, 4,454 adult patients underwent renal mass protocol CT or CT urography from January 2011 to June 2018. Of these, 257 cystic renal masses were included in the final study cohort. Each mass was independently classified using Bosniak version 2019 by three radiologists, resulting in 185 benign (Bosniak I or II) and 72 potentially malignant (Bosniak IIF, III or IV) masses. Six texture features: mean, standard deviation, mean of positive pixels, entropy, skewness, kurtosis were extracted using commercial software TexRAD (Feedback PLC, Cambridge, UK) Random forest (RF) logistic regression (LR) and support vector machine (SVM) machine learning algorithms were implemented to classify cystic renal masses into the two groups and tested with tenfold cross validations. Results Higher mean, standard deviation, mean of positive pixels, entropy, skewness were statistically associated with the potentially malignant group P 0.0015 each) Sensitivity, specificity, positive predictive value, negative predictive value, and area under curve of RF model was 0.67, 0.91, 0.75, 0.88, 0.88; of LR model was 0.63, 0.93, 0.78, 0.86, 0.90, and of SVM model was 0.56, 0.91, 0.71, 0.84, 0.89, respectively. Conclusion Three CT texture based machine learning algorithms demonstrated high discriminatory capability in distinguishing benign from potentially malignant cystic renal masses as defined by the Bosniak Classification version 2019. If validated, CT texture based machine learning algorithms may help reduce interreader variability when applying the Bosniak classification.", "corpus_id": 220294259, "venue": "Abdominal Radiology", "year": 2020, "author_names": [ "Nityanand Miskin", "Lei Qin", "Shanna A Matalon", "Sree Harsha Tirumani", "Francesco Alessandrino", "Stuart G Silverman", "Atul B Shinagare" ], "n_citations": 4, "n_key_citations": 1, "score": 1 }, { "doc_id": "221798018", "title": "Bosniak classification of cystic renal masses version 2019 does not increase the interobserver agreement or the proportion of masses categorized into lower Bosniak classes for non subspecialized readers on CT or MR.", "abstract": "PURPOSE In a condition so prevalent as renal cysts, classifications should display satisfactory reproducibility not only among subspecialized readers. We aimed to compare the interobserver agreement of the Bosniak classification version 2019 (BC19) and current Bosniak classification (CBC) for non subspecialized readers on CT and MRI and to verify whether BC19 leads to a downgrade of renal cystic masses when compared to CBC. METHODS We evaluated 50 renal cystic masses in 47 patients on MR and CT (25 per method) Eighteen readers (nine third year radiology residents and nine abdominal imaging fellows) assessed the images using BC19 and CBC with an eight week interval. Kappa statistic was used to assess agreement. An average score of Bosniak categories across all raters evaluated if there was downgrading of lesions on BC19. RESULTS The highest values of Kappa were found for fellows on CBC MR (k 0.51) and the lowest values were found for residents on CBC MR and fellows on BC19 MR (both k 0.36) On CBC, interobserver agreement was moderate for MR and CT (k 0.42 and 0.43, respectively) whereas on BC19, it was fair (k 0.38 and 0.40, respectively) The best agreements were in categories I (k 0.49 0.69) and IV (k 0.45 0.51) The poorest agreements occurred at IIF (k 0.18 on BC19 CT) There was a moderate median increase from CBC to BC19 in terms of Bosniak categories for both methods (MR [Z= 2.058, p 0.040] and CT [Z= 2.509, p 0.012] CONCLUSION BC19, when compared to CBC, did not improve interobserver agreement nor diminished the proportion of masses categorized into lower Bosniak classes among non subspecialized readers.", "corpus_id": 221798018, "venue": "European journal of radiology", "year": 2020, "author_names": [ "Eduardo O Pacheco", "Ulysses Dos Santos Torres", "Aldo Maurici Araujo Alves", "Daniel Bekhor", "Giuseppe D'Ippolito" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "229281522", "title": "Contrast Enhanced Ultrasound (CEUS) for the Evaluation of Bosniak III Complex Renal Cystic Lesions A 10 Year Specialized European Single Center Experience with Histopathological Validation", "abstract": "Background and objectives: The aim of the present retrospective single center study is to evaluate the diagnostic performance of contrast enhanced ultrasound (CEUS) for assessing Bosniak III complex renal cystic lesions with histopathological validation. Materials and Methods: 49 patients with CEUS categorized Bosniak III renal cystic lesions were included in this retrospective study. All patients underwent native B mode, Color Doppler, contrast enhanced ultrasound (CEUS) between 2010 2020. Eight and five patients underwent computed tomography (CT) and magnetic resonance imaging (MRI) respectively. Twenty nine underwent (partial) nephrectomy allowing for histopathological analysis. The applied contrast agent for CEUS was a second generation blood pool agent. Ultrasonography examinations were performed and interpreted by a single experienced radiologist with more than 15 years of experience (EFSUMB Level 3) Results: CEUS examinations were successfully performed in all included patients without registering any adverse effects. The malignancy rate of CEUS categorized Bosniak III renal lesions accounted for 66% Initially, cystic complexity was visualized in native B mode. In none of the renal lesions hypervascularization was detected in Color Doppler. CEUS allowed for detection of contrast enhancement patterns in all included Bosniak III renal lesions. Delayed wash out could be detected in 6/29 renal lesions. In two cases of histopathologically confirmed clear cell RCC, appropriate up grading from Bosniak IIF to III was achieved by CEUS. Conclusions: CEUS depicts a promising imaging modality for the precise diagnostic workup and stratification of renal cystic lesions according to the Bosniak classification system, thereby helping guidance of adequate clinical management in the future.", "corpus_id": 229281522, "venue": "Medicina", "year": 2020, "author_names": [ "Vincent Schwarze", "Johannes Rubenthaler", "Sasa Cecatka", "Constantin Arndt Marschner", "Matthias Frank Froelich", "Bastian O Sabel", "Michael Staehler", "Thomas Knosel", "Thomas Geyer", "Dirk-Andre Clevert" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "222168701", "title": "Update on MRI of Cystic Renal Masses Including Bosniak Version 2019", "abstract": "Incidental cystic renal masses are common, usually benign, and almost always indolent. Since 1986, the Bosniak classification has been used to express the risk of malignancy in a cystic renal mass detected at imaging. Historically, magnetic resonance imaging (MRI) was not included in that classification. The proposed Bosniak v.2019 update has formally incorporated MRI, included definitions of imaging terms designed to improve interobserver agreement and specificity for malignancy, and incorporated a variety of masses that were incompletely defined or not included in the original classification. For example, at unenhanced MRI, homogeneous masses markedly hyperintense at T2 weighted imaging (similar to cerebrospinal fluid) and homogeneous masses markedly hyperintense at fat suppressed T1 weighted imaging (approximately =2.5 times more intense than adjacent renal parenchyma) are classified as Bosniak II and may be safely ignored, even when they have not been imaged with a complete renal mass MRI protocol. MRI has specific advantages and is recommended to evaluate masses that at computed tomography (CT) 1) have abundant thick or nodular calcifications; 2) are homogeneous, hyperattenuating, =3 cm, and nonenhancing; or 3) are heterogeneous and nonenhancing. Although MRI is generally excellent for characterizing cystic renal masses, there are unique weaknesses of MRI that bear consideration. These details and others related to MRI of cystic renal masses are described in this review, with an emphasis on Bosniak v.2019. A website (https:/bosniak calculator.herokuapp.com/ and mobile phone apps named \"Bosniak Calculator\" have been developed for ease of assignment of Bosniak classes.", "corpus_id": 222168701, "venue": "Journal of magnetic resonance imaging JMRI", "year": 2020, "author_names": [ "Satheesh Krishna", "Nicola Schieda", "Ivan Pedrosa", "Nicole M Hindman", "Ronaldo Hueb Baroni", "Stuart G Silverman", "Matthew S Davenport" ], "n_citations": 3, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "216259704", "title": "The Unprecedented Stock Market Impact of Covid 19", "abstract": "No previous infectious disease outbreak, including the Spanish Flu, has impacted the stock market as forcefully as the COVID 19 pandemic. In fact, previous pandemics left only mild traces on the U.S. stock market. We use text based methods to develop these points with respect to large daily stock market moves back to 1900 and with respect to overall stock market volatility back to 1985. We also evaluate potential explanations for the unprecedented stock market reaction to the COVID 19 pandemic. The evidence we amass suggests that government restrictions on commercial activity and voluntary social distancing, operating with powerful effects in a service oriented economy, are the main reasons the U.S. stock market reacted so much more forcefully to COVID 19 than to previous pandemics in 1918 19, 1957 58 and 1968.", "corpus_id": 216259704, "venue": "", "year": 2020, "author_names": [ "Scott Ross Baker", "Nicholas Bloom", "Steven J Davis", "Kyle J Kost", "Marco Sammon", "Tasaneeya Viratyosin" ], "n_citations": 356, "n_key_citations": 39, "score": 0 }, { "doc_id": "221377646", "title": "The Unprecedented Stock Market Reaction to COVID 19", "abstract": "Abstract No previous infectious disease outbreak, including the Spanish Flu, has affected the stock market as forcefully as the COVID 19 pandemic. In fact, previous pandemics left only mild traces on the U.S. stock market. We use text based methods to develop these points with respect to large daily stock market moves back to 1900 and with respect to overall stock market volatility back to 1985. We also evaluate potential explanations for the unprecedented stock market reaction to the COVID 19 pandemic. The evidence we amass suggests that government restrictions on commercial activity and voluntary social distancing, operating with powerful effects in a service oriented economy, are the main reasons the U.S. stock market reacted so much more forcefully to COVID 19 than to previous pandemics in 1918 1919, 1957 1958, and 1968.", "corpus_id": 221377646, "venue": "Review of Asset Pricing Studies", "year": 2020, "author_names": [ "Scott Ross Baker", "Nicholas Bloom", "Steven J Davis", "Kyle J Kost", "Marco Sammon", "Tasaneeya Viratyosin" ], "n_citations": 412, "n_key_citations": 41, "score": 0 }, { "doc_id": "218643951", "title": "COVID 19 pandemic, oil prices, stock market, geopolitical risk and policy uncertainty nexus in the US economy: Fresh evidence from the wavelet based approach", "abstract": "Abstract In this paper, we analyze the connectedness between the recent spread of COVID 19, oil price volatility shock, the stock market, geopolitical risk and economic policy uncertainty in the US within a time frequency framework. The coherence wavelet method and the wavelet based Granger causality tests applied to US recent daily data unveil the unprecedented impact of COVID 19 and oil price shocks on the geopolitical risk levels, economic policy uncertainty and stock market volatility over the low frequency bands. The effect of the COVID 19 on the geopolitical risk substantially higher than on the US economic uncertainty. The COVID 19 risk is perceived differently over the short and the long run and may be firstly viewed as an economic crisis. Our study offers several urgent prominent implications and endorsements for policymakers and asset managers.", "corpus_id": 218643951, "venue": "International Review of Financial Analysis", "year": 2020, "author_names": [ "Arshian Sharif", "Chaker Aloui", "Larisa Yarovaya" ], "n_citations": 352, "n_key_citations": 6, "score": 0 }, { "doc_id": "218830929", "title": "Stock markets' reaction to COVID 19: Cases or fatalities?", "abstract": "Abstract In this paper, we examine the stock markets' response to the COVID 19 pandemic. Using daily COVID 19 confirmed cases and deaths and stock market returns data from 64 countries over the period January 22, 2020 to April 17, 2020, we find that stock markets responded negatively to the growth in COVID 19 confirmed cases. That is, stock market returns declined as the number of confirmed cases increased. We further find that stock markets reacted more proactively to the growth in number of confirmed cases as compared to the growth in number of deaths. Our analysis also suggests negative market reaction was strong during early days of confirmed cases and then between 40 to 60 days after the initial confirmed cases. Overall, our results suggest that stock markets quickly respond to COVID 19 pandemic and this response varies over time depending on the stage of outbreak.", "corpus_id": 218830929, "venue": "Research in International Business and Finance", "year": 2020, "author_names": [ "Badar Nadeem Ashraf" ], "n_citations": 301, "n_key_citations": 33, "score": 0 }, { "doc_id": "216309671", "title": "Feverish Stock Price Reactions to Covid 19", "abstract": "This paper studies how markets adjust to the sudden emergence of previously neglected risks. It does so by analyzing the stock price effects of the 2019 novel Coronavirus disease (COVID 19) pandemic. The telecom and health care industries did relatively well, while transportation and energy plummeted. Within industries, US firms reliant on Chinese inputs and those with a strong export orientation towards China suffered. Sophisticated investors appear to have started pricing in the effects of the virus already in the first part of January (the \"Incubation\" phase) that is, before managers or analysts started paying attention; the first earnings conference call that contained a discussion of \"Coronavirus\" took place on January 22. The \"Outbreak\" phase followed, during which China oriented stocks and internationally oriented stocks more generally strongly underperformed. In the last week of February and early March (the \"Fever\" phase) the aggregate market first fell strongly and then entered a whipsaw pattern. But behind these feverish and seemingly behaviorally driven price moves, some patterns emerge. In particular, investors became increasingly worried about corporate debt and liquidity, indicating widespread concerns that the health crisis may evolve into a financial crisis.", "corpus_id": 216309671, "venue": "", "year": 2020, "author_names": [ "Stefano Ramelli", "Alexander F Wagner" ], "n_citations": 391, "n_key_citations": 40, "score": 0 }, { "doc_id": "215403632", "title": "Death and contagious infectious diseases: Impact of the COVID 19 virus on stock market returns", "abstract": "Abstract This study investigates whether contagious infectious diseases affect stock market outcomes. As a natural experiment, we use panel data regression analysis to measure the effect of the COVID 19 virus, which is a contagious infectious disease, on the Chinese stock market. The findings indicate that both the daily growth in total confirmed cases and in total cases of death caused by COVID 19 have significant negative effects on stock returns across all companies.", "corpus_id": 215403632, "venue": "Journal of Behavioral and Experimental Finance", "year": 2020, "author_names": [ "Abdullah M Al-Awadhi", "Khaled Alsaifi", "Ahmad M Al-Awadhi", "Salah Alhammadi" ], "n_citations": 385, "n_key_citations": 25, "score": 1 }, { "doc_id": "221065923", "title": "Country Responses and the Reaction of the Stock Market to COVID 19 a Preliminary Exposition", "abstract": "ABSTRACT As the coronavirus pandemic (COVID 19) has amplified so has country responses to it. With COVID 19 taking its toll on humans, as reflected in the number of people infected by, and deaths from, COVID 19, countries responded by locking down economic activity and peoples movement, imposing travel bans, and implementing stimulus packages to cushion the unprecedented slowdown in economic activity and loss of jobs. This article provides a commentary on how the most active financial indicator namely, the stock price reacted in real time to different stages in COVID 19's evolution. We argue that, as with any unexpected news, markets over react and as more information becomes available and people understand the ramifications more broadly the market corrects itself. This is our hypothesis which needs robust empirical verification.", "corpus_id": 221065923, "venue": "", "year": 2020, "author_names": [ "Dinh Hoang Bach Phan", "Paresh Kumar Narayan" ], "n_citations": 217, "n_key_citations": 8, "score": 1 }, { "doc_id": "216109830", "title": "The COVID 19 Outbreak and Affected Countries Stock Markets Response", "abstract": "This paper evaluates the short term impact of the coronavirus outbreak on 21 leading stock market indices in major affected countries including Japan, Korea, Singapore, the USA, Germany, Italy, and the UK etc. The consequences of infectious disease are considerable and have been directly affecting stock markets worldwide. Using an event study method, our results indicate that the stock markets in major affected countries and areas fell quickly after the virus outbreak. Countries in Asia experienced more negative abnormal returns as compared to other countries. Further panel fixed effect regressions also support the adverse effect of COVID 19 confirmed cases on stock indices abnormal returns through an effective channel by adding up investors' pessimistic sentiment on future returns and fears of uncertainties.", "corpus_id": 216109830, "venue": "International journal of environmental research and public health", "year": 2020, "author_names": [ "Haiyue Liu", "Aqsa Manzoor", "Cangyu Wang", "Liang Cai Zhang", "Zaira Manzoor" ], "n_citations": 214, "n_key_citations": 18, "score": 1 }, { "doc_id": "225872918", "title": "Impact of the COVID 19 Pandemic on the Crude Oil and Stock Markets in the US: A Time Varying Analysis", "abstract": "This research explores the interaction among the COVID 19 pandemic, crude oil market and stock market in the U.S. by utilizing a time varying parameter vector autoregression (TVP VAR) model. Our results indicate that there is a negative connection between crude oil returns and stock returns. Interestingly, contrary to our intuition, we find that the COVID 19 pandemic cannot exert a negative effect but has a statistically significantly positive effect on crude oil returns and stock returns.", "corpus_id": 225872918, "venue": "", "year": 2020, "author_names": [ "Lu Liu", "En-Ze Wang", "Chien-Chiang Lee" ], "n_citations": 128, "n_key_citations": 3, "score": 0 }, { "doc_id": "219075911", "title": "COVID 19 and Stock Market Volatility", "abstract": "I investigate the impact of COVID 19 cases and related deaths on the US stock market (Dow Jones and S&P500 indices) allowing for changes in trading volume and volatility expectations, as well as day of the week effects. The results, based a GARCH(1,1) model and data from April 8, 2019 to April 9, 2020, suggest that changes in the number of cases and deaths in the US and six other countries majorly affected by the COVID 19 crisis do not have an impact on the US stock market returns, apart from the number of reported cases for China. However, there is evidence of a positive impact, for some countries, on the conditional heteroscedasticity of the Dow Jones and S&P500 returns. VAR models suggest that the number of reported deaths in Italy and France have a negative impact on stock market returns, and a positive impact on the VIX returns. Finally, Markov Switching models suggest that at the end of February 2020 the magnitude of the negative impact of the VIX on stock market returns increased threefold.", "corpus_id": 219075911, "venue": "", "year": 2020, "author_names": [ "Enrico Onali" ], "n_citations": 83, "n_key_citations": 4, "score": 1 } ]

[ { "doc_id": "120050141", "title": "Control of carbon content in amorphous GeTe films deposited by plasma enhanced chemical vapor deposition (PE MOCVD) for phase change random access memory applications", "abstract": "Amorphous and smooth GeTe thin films are deposited on 200 mm silicon substrates by plasma enhanced metal organic chemical vapor deposition (PE MOCVD) using the commercial organometallic precursors TDMAGe and DIPTe as Ge and Te precursors, respectively. X ray photoelectron spectroscopy (XPS) measurements show a stoichiometric composition of the deposited GeTe films but with high carbon contamination. Using information collected by Optical Emission Spectroscopy (OES) and XPS, the origin of carbon contamination is determined and the dissociation mechanisms of Ge and Te precursors in H2 Ar plasma are proposed. As a result, carbon level is properly controlled by varying operating parameters such as plasma radio frequency power, pressure and H2 rate. Finally, GeTe films with carbon level as low as 5 at. are obtained.", "corpus_id": 120050141, "venue": "", "year": 2015, "author_names": [ "Manuela Aoukar", "Pierre David Szkutnik", "Dominique Jourde", "Bernard Pelissier", "Philippe Michallon", "Pierre Noe", "Christophe Vallee" ], "n_citations": 9, "n_key_citations": 0, "score": 1 }, { "doc_id": "208261797", "title": "Fast and scalable phase change materials Ti Sb Te deposited by plasma enhanced atomic layer deposition", "abstract": "Current features of phase change memory (PCM) based on Ge 2 Sb 2 Te 5 (GST) as a non volatile memory is insufficient to meet the needs of storage class memory (SCM) such as extremely high density, ultra fast operating speed and long life cycle. In this study, Ti 0.28 Sb 2 Te 3 (TST) device was fabricated based on atomic layer deposition (ALD) method and used as a phase change material. Due to the fast crystallization and low melting temperature of TST, the set speed can be reduced to 6 ns while the reset voltage can be decreased by 20% compared with GST based device with the same cell structure. In addition, the ALD deposited TST alloy showed a good gap fill capability. These results indicate that the ALD deposited TST film is a fast and scalable phase change material applied to SCM.", "corpus_id": 208261797, "venue": "Journal of Materials Science: Materials in Electronics", "year": 2019, "author_names": [ "Huazhao Wang", "Sannian Song", "Zhitang Song", "Zhiguo Zhou", "Dongning Yao", "Shi-Long Lv" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "98098648", "title": "Plasma Enhanced Chemical Vapor Deposition of Conformal GeTe Layer for Phase Change Memory Applications", "abstract": "Phase change memory is one of the most promising technologies for the future non volatile memories generation and the synthesis of highly conformal active material is one of the main challenges. Herein, we report the successful chemical vapor deposition of phase change materials conducted using original plasma enhanced pulsed liquid injection system. Smooth, conformal and amorphous as well crystalline GeTe layers were grown on large surfaces. Their phase change characteristics present fast switch from amorphous to crystalline phases with high optical contrast between the two states. These properties are similar to those of sputtered films used in electronic devices. Moreover, thanks to appropriate process tuning, material structure and phase change properties can be tuned.", "corpus_id": 98098648, "venue": "", "year": 2012, "author_names": [ "E Gourvest", "Christophe Vallee", "Philippe Michallon", "Romuald Blanc", "Raluca Tiron", "Dominique Jourde", "Sandrine Lhostis", "S Maitrejean" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "17954009", "title": "Phase change properties of GeSbTe thin films deposited by plasma enchanced atomic layer depositon", "abstract": "Phase change access memory (PCM) appears to be the strongest candidate for next generation high density nonvolatile memory. The fabrication of ultrahigh density PCM depends heavily on the thin film growth technique for the phase changing chalcogenide material. In this study, Ge2Sb2Te5 (GST) and GeSb8Te thin films were deposited by plasma enhanced atomic layer deposition (ALD) method using Ge (CH3)2 N]4, Sb (CH3)2 N]3, Te(C4H9)2 as precursors and plasma activated H2 gas as reducing agent of the metallorganic precursors. Compared with GST based device, GeSb8Te based device exhibits a faster switching speed and reduced reset voltage, which is attributed to the growth dominated crystallization mechanism of the Sb rich GeSb8Te films. These results show that ALD is an attractive method for preparation of phase change materials.", "corpus_id": 17954009, "venue": "Nanoscale Research Letters", "year": 2015, "author_names": [ "Sannian Song", "Dongning Yao", "Zhitang Song", "Lina Gao", "Zhonghua Zhang", "Le Li", "Lan Lan Shen", "Liangcai Wu", "Bo Liu", "Yan-Xiang Cheng", "Songlin Feng" ], "n_citations": 15, "n_key_citations": 0, "score": 1 }, { "doc_id": "117572222", "title": "Phase change memory cell using Ge2Sb2Te5 and softly broken down TiO2 films for multilevel operation", "abstract": "A phase change memory cell was fabricated by stacking plasma enhanced cyclic chemical vapor deposited Ge2Sb2Te5 (GST) and atomic layer deposited TiO2 thin films. Different pairs of resistance states were obtained by controlling the current flow, which can be used to achieve higher memory density by multilevel operation. The multiresistance states of the stacked cell were explained by the resistance switching phenomena of TiO2 and the thermoelectric phase change properties of GST. The phase change characteristics of GST could be altered by controlling the degree of filament formation in the TiO2 layer, which eventually changed the phase change volume in the GST.", "corpus_id": 117572222, "venue": "", "year": 2010, "author_names": [ "Byung Joon Choi", "Seol Choi", "Taeyong Eom", "Sang Ho Rha", "Kyung Min Kim", "Cheol Seong Hwang" ], "n_citations": 16, "n_key_citations": 1, "score": 1 }, { "doc_id": "230511898", "title": "Electrical Characteristics of Magnesium Doped a IGZO RRAM: Chemical Vapor Deposition using Enhanced Atmospheric Pressure Plasma", "abstract": "Since the first floating gate memory was introduced in 1968, Non Volatile Memory (NVM) has been widely investigated and developed for permanent data storage. The progress of metal oxide semiconductor field effect transistor (MOSFET) technology even makes the memory scalable. The scale down of the memories faces other issues. The thinner oxide layer induces a higher leakage current and worse electrical characteristics. There are promising NVMs such as ferroelectric (FeRAM) phase change (PCRAM) magneto resistive (MRAM) and resistive (RRAM).In this study, RRAM devices with a metal insulator metal (MIM) structure are investigated. Amorphous indium gallium zinc oxide (a IGZO) is deposited with atmosphere pressure plasma enhanced chemical vapor deposition (AP PECVD) The resistivity of an a IGZO insulator is dominated by oxygen vacancy, and the electrical characteristics of RRAM devices are crucially influenced by the insulator layer. Magnesium (Mg) is doped into an a IGZO insulator layer to modulate the RRAM device's electrical characteristics. The results show that 1% of Mg doping makes the stability progress on devices set and read process. If more Mg is doped into a IGZO insulator layer, Mg occupies more oxygen vacancies, and RRAM devices become more unstable and unreliable.", "corpus_id": 230511898, "venue": "2020 IEEE Eurasia Conference on IOT, Communication and Engineering (ECICE)", "year": 2020, "author_names": [ "Chien-Hung Wu", "S N Kuo", "Yi-Ming Chen", "Kow-Ming Chang", "Yu Yang", "Albert Chin" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "23344764", "title": "New screened plasma enhanced atomic vapor deposition to improve trench covering ability of SbTe films", "abstract": "In this paper, a new screened plasma enhanced atomic vapor deposition technique was studied for increasing trench covering ability of Sb Te phase change film. Trench structure cells of phase change random access memory can lower thermal energy loss and thermal cross talk among adjacent memory cells. Using a plasma sheath effect with metallic mesh inside a reaction chamber, a step coverage was greatly increased in various experimental conditions. With consideration of a model of the plasma sheath, the trench covering ability of the films was evaluated and we expect this research to provide a new deposition method for the fine control of step coverage.", "corpus_id": 23344764, "venue": "2014 14th Annual Non Volatile Memory Technology Symposium (NVMTS)", "year": 2014, "author_names": [ "Jin Hwan Jeong", "Doo Jin Choi" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "93806978", "title": "Role of hydrogen in Sb film deposition and characterization of Sb and GexSby films deposited by cyclic plasma enhanced chemical vapor deposition using metal organic precursors", "abstract": "Abstract To meet increasing demands for chemical vapor deposition methods for high performance phase change memory, cyclic plasma enhanced chemical vapor deposition of Sb and GexSby phase change films and characterization of their properties were performed. Two cycle sequences were designed to investigate the role of hydrogen gas as a reduction gas during Sb film deposition. Hydrogen gas was not introduced into the reaction chamber during the purge step in cycle sequence A and was introduced during the purge step for cycle sequence B. The role of hydrogen gas was investigated by comparing the results obtained from these two cycle sequences and was concluded to exert an effect by a combination of precursor decomposition, surface maintenance as a hydrogen termination agent, and surface etching. These roles of hydrogen gas are discussed through consideration of changes in deposition rates, the oxygen concentration on the surface of the Sb film, and observations of film surface morphology. Based on these results, GexSby phase change films were deposited with an adequate flow rate of hydrogen gas. The Ge and Sb composition of the film was controlled with the designed cycle sequences. A strong oxygen affinity for Ge was observed during the X ray photoelectron spectroscopy analysis of Sb 3d, Sb 4d, and Ge 3d orbitals. Based on the XPS results, the ratios of Ge to Sb were calculated to be Ge0.32Sb0.68, Ge0.38Sb0.62, Ge0.44Sb0.56, Ge0.51Sb0.49 and Ge0.67Sb0.33 for the G1S7, G1S3, G1S2, G1S1, and G2S1 cycles, respectively. Crystal structures of Sb, Ge, and the GeSb metastable phase were observed with various GexSby film compositions. Sb crystallinity decreased with respect to Ge crystallinity by increasing the Ge fraction. A current voltage curve was introduced, and an electro switching phenomenon was clearly generated at a typical voltage, Vth. Vth values increased in conjunction with an increased proportion of Ge. The Sb crystallinity decrease and Vth increase were explained via the bonding characteristics of each element.", "corpus_id": 93806978, "venue": "", "year": 2012, "author_names": [ "Hyung Keun Kim", "Jinyoung Jung", "Doo Jin Choi" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "103957596", "title": "A Te precursor, a Te including chalcogenide thin layer prepared by using the Te precursor, a method for preparing the thin layer and a phase change memory device", "abstract": "The invention tellurium (Te) containing N and Si low temperature deposition tellurium precursors, containing Te doped with N and Si produced by using this, a chalcogenide (chalcogenide) thin film, the manufacturing method and the phase change of the film It relates to a memory device. Low temperature deposition tellurium precursor according to this invention generally have the advantage of being a low temperature can be deposited during formation Te containing chalcogenide (chalcogenide) thin film doped with N and Si. In particular, wearing the tellurium precursor for low temperature deposition may utilize the PECVD (Plasma Enhanced Chemical Vapor Deposition) or PEALD (Plasma Enhanced Chemical Vapor Deposition) at low temperatures the deposition temperature. Bar, a memory device including the same that has the GST phase change film is a reduced reset current layer doped with N and Si formed using the low temperature deposition tellurium precursors become integration is possible, it is possible to high capacity and high speed operation. Tellurium precursors", "corpus_id": 103957596, "venue": "", "year": 2005, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "232765235", "title": "Effect of surface temperature on GeSbTe damage formation during plasma processing", "abstract": "Phase Change Memory (PCM) materials can be damaged during plasma exposure leading to changes in phase transition behavior. Etch induced damage and crystallization properties of GeSbTe (GST) were evaluated as a function of substrate temperature, plasma chemistry, and plasma exposure time. Enhanced damage formation is related to selective elemental depletion and non volatilized etch residue retention in the near surface region. These experiments validate literature findings that crystallization time increases with reduction in film thickness for GST samples capped with a thin SiO2 film, indicating the presence of a modified layer which serves as an interface layer material. A direct comparison of passivating properties of hydrofluorocarbon and hydrocarbon on GST can be more conclusive with a fine tuning of film thickness and an evaluation of total residue retention with depth profiling.", "corpus_id": 232765235, "venue": "Advanced Lithography", "year": 2021, "author_names": [ "L Buzi", "John M Papalia", "H Miyazoe", "H -Y Cheng", "M Hopstaken", "Robert L Bruce", "Sebastian Engelmann" ], "n_citations": 1, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "212739295", "title": "Clinical, laboratory and imaging features of COVID 19: A systematic review and meta analysis", "abstract": "Abstract Introduction An epidemic of Coronavirus Disease 2019 (COVID 19) began in December 2019 in China leading to a Public Health Emergency of International Concern (PHEIC) Clinical, laboratory, and imaging features have been partially characterized in some observational studies. No systematic reviews on COVID 19 have been published to date. Methods We performed a systematic literature review with meta analysis, using three databases to assess clinical, laboratory, imaging features, and outcomes of COVID 19 confirmed cases. Observational studies and also case reports, were included, and analyzed separately. We performed a random effects model meta analysis to calculate pooled prevalences and 95% confidence intervals (95%CI) Results 660 articles were retrieved for the time frame (1/1/2020 2/23/2020) After screening, 27 articles were selected for full text assessment, 19 being finally included for qualitative and quantitative analyses. Additionally, 39 case report articles were included and analyzed separately. For 656 patients, fever (88.7% 95%CI 84.5 92.9% cough (57.6% 95%CI 40.8 74.4% and dyspnea (45.6% 95%CI 10.9 80.4% were the most prevalent manifestations. Among the patients, 20.3% (95%CI 10.0 30.6% required intensive care unit (ICU) 32.8% presented with acute respiratory distress syndrome (ARDS) (95%CI 13.7 51.8) 6.2% (95%CI 3.1 9.3) with shock. Some 13.9% (95%CI 6.2 21.5% of hospitalized patients had fatal outcomes (case fatality rate, CFR) Conclusion COVID 19 brings a huge burden to healthcare facilities, especially in patients with comorbidities. ICU was required for approximately 20% of polymorbid, COVID 19 infected patients and hospitalization was associated with a CFR of >13% As this virus spreads globally, countries need to urgently prepare human resources, infrastructure and facilities to treat severe COVID 19.", "corpus_id": 212739295, "venue": "Travel Medicine and Infectious Disease", "year": 2020, "author_names": [ "Alfonso J Rodriguez-Morales", "Jaime A Cardona-Ospina", "Estefania Gutierrez-Ocampo", "Rhuvi Villamizar-Pena", "Yeimer Holguin-Rivera", "Juan P Escalera-Antezana", "Lucia Elena Alvarado-Arnez", "D Katterine Bonilla-Aldana", "Carlos Franco-Paredes", "Andres F Henao-Martinez", "Alberto E Paniz-Mondolfi", "Guillermo J Lagos-Grisales", "Eduardo Ramirez-Vallejo", "Jose Antonio Suarez", "Lysien I Zambrano", "Wilmer E Villamil-Gomez", "Graciela Josefina Balbin-Ramon", "Ali A Rabaan", "Harapan Harapan", "Kuldeep Dhama", "Hiroshi Nishiura", "Hiromitsu Kataoka", "Tauseef Ahmad", "Ranjit Sah" ], "n_citations": 1265, "n_key_citations": 23, "score": 1 }, { "doc_id": "1823934", "title": "The Guide for the Care and Use of Laboratory Animals.", "abstract": "Previous studies have established that gene transfer into myocardial cells in vivo is detectable after direct injection of plasmid DNA. Recently, adenovirus vectors have been shown to provide an efficient method for gene transfer into a wide range of tissues. Therefore, this study sought to assess the efficiency and stability of adenovirus mediated gene transfer into myocardium and to compare this method with that using plasmid based gene transfer techniques. Adult rats underwent myocardial injection via a subdiaphragmatic approach. Gene transfer efficiency was compared using direct injection of an adenovirus vector encoding for the marker gene f galactosidase gal) a control adenovirus vector encoding for the cystic fibrosis transmembrane conductance regulator gene, a plasmid encoding for gal, or a control plasmid. Hearts infected with an adenovirus vector containing the P gal gene showed significantly increased (3 gal enzymatic activity compared with hearts injected with ,B gal plasmid. Histological examination revealed that cardiac myocytes were the target of adenovirus mediated gene transfer. A time course of gene expression showed that gal enzymatic activity peaked during the first week following injection. Adenovirus vectors provide an efficient but transient method for in vivo gene expression in myocardium. (Circ Res. 1993;73:1202 1207.", "corpus_id": 1823934, "venue": "ILAR journal", "year": 2016, "author_names": [ "Lloyd H Michael" ], "n_citations": 4610, "n_key_citations": 93, "score": 0 }, { "doc_id": "212739163", "title": "Diagnostic utility of clinical laboratory data determinations for patients with the severe COVID 19", "abstract": "The role of clinical laboratory data in the differential diagnosis of the severe forms of COVID 19 has not been definitely established. The aim of this study was to look for the warning index in severe COVID 19 patients. We investigated 43 adult patients with COVID 19. The patients were classified into mild group (28 patients) and severe group (15 patients) A comparison of the hematological parameters between the mild and severe groups showed significant differences in interleukin 6 (IL 6) d dimer (d D) glucose, thrombin time, fibrinogen, and C reactive protein (P .05) The optimal threshold and area under the receiver operator characteristic curve (ROC) of IL 6 were 24.3 and 0.795 ug/L, respectively, while those of d D were 0.28 and 0.750 ug/L, respectively. The area under the ROC curve of IL 6 combined with d D was 0.840. The specificity of predicting the severity of COVID 19 during IL 6 and d D tandem testing was up to 93.3% while the sensitivity of IL 6 and d D by parallel test in the severe COVID 19 was 96.4% IL 6 and d D were closely related to the occurrence of severe COVID 19 in the adult patients, and their combined detection had the highest specificity and sensitivity for early prediction of the severity of COVID 19 patients, which has important clinical value.", "corpus_id": 212739163, "venue": "Journal of medical virology", "year": 2020, "author_names": [ "Yong Gao", "Tuantuan Li", "Mingfeng Han", "Xiuyong Li", "Dong Wu", "Yuanhong Xu", "Yulin Zhu", "Yahui Liu", "Xiaowu Wang", "Linding Wang" ], "n_citations": 517, "n_key_citations": 17, "score": 1 }, { "doc_id": "214786540", "title": "Laboratory Diagnosis of COVID 19: Current Issues and Challenges", "abstract": "The COVID 19 outbreak has had a major impact on clinical microbiology laboratories in the past several months. This commentary covers current issues and challenges for the laboratory diagnosis of infections caused by severe acute respiratory syndrome coronavirus 2 (SARS CoV 2) In the preanalytical stage, collecting the proper respiratory tract specimen at the right time from the right anatomic site is essential for a prompt and accurate molecular diagnosis of COVID 19. Appropriate measures are required to keep laboratory staff safe while producing reliable test results. ABSTRACT The COVID 19 outbreak has had a major impact on clinical microbiology laboratories in the past several months. This commentary covers current issues and challenges for the laboratory diagnosis of infections caused by severe acute respiratory syndrome coronavirus 2 (SARS CoV 2) In the preanalytical stage, collecting the proper respiratory tract specimen at the right time from the right anatomic site is essential for a prompt and accurate molecular diagnosis of COVID 19. Appropriate measures are required to keep laboratory staff safe while producing reliable test results. In the analytic stage, real time reverse transcription PCR (RT PCR) assays remain the molecular test of choice for the etiologic diagnosis of SARS CoV 2 infection while antibody based techniques are being introduced as supplemental tools. In the postanalytical stage, testing results should be carefully interpreted using both molecular and serological findings. Finally, random access, integrated devices available at the point of care with scalable capacities will facilitate the rapid and accurate diagnosis and monitoring of SARS CoV 2 infections and greatly assist in the control of this outbreak.", "corpus_id": 214786540, "venue": "Journal of Clinical Microbiology", "year": 2020, "author_names": [ "Yi-Wei Tang", "Jonathan E Schmitz", "David H Persing", "Charles W Stratton" ], "n_citations": 613, "n_key_citations": 11, "score": 1 }, { "doc_id": "214600182", "title": "Laboratory diagnosis of emerging human coronavirus infections the state of the art", "abstract": "ABSTRACT The three unprecedented outbreaks of emerging human coronavirus (HCoV) infections at the beginning of the twenty first century have highlighted the necessity for readily available, accurate and fast diagnostic testing methods. The laboratory diagnostic methods for human coronavirus infections have evolved substantially, with the development of novel assays as well as the availability of updated tests for emerging ones. Newer laboratory methods are fast, highly sensitive and specific, and are gradually replacing the conventional gold standards. This presentation reviews the current laboratory methods available for testing coronaviruses by focusing on the coronavirus disease 2019 (COVID 19) outbreak going on in Wuhan. Viral pneumonias typically do not result in the production of purulent sputum. Thus, a nasopharyngeal swab is usually the collection method used to obtain a specimen for testing. Nasopharyngeal specimens may miss some infections; a deeper specimen may need to be obtained by bronchoscopy. Alternatively, repeated testing can be used because over time, the likelihood of the SARS CoV 2 being present in the nasopharynx increases. Several integrated, random access, point of care molecular devices are currently under development for fast and accurate diagnosis of SARS CoV 2 infections. These assays are simple, fast and safe and can be used in the local hospitals and clinics bearing the burden of identifying and treating patients.", "corpus_id": 214600182, "venue": "Emerging microbes infections", "year": 2020, "author_names": [ "Michael J Loeffelholz", "Yi-Wei Tang" ], "n_citations": 489, "n_key_citations": 9, "score": 0 }, { "doc_id": "216647946", "title": "Mild versus severe COVID 19: Laboratory markers", "abstract": "Abstract The number of COVID 19 patients is increasing dramatically worldwide and treatment in intensive care units (ICU) has become a major challenge, the early recognition of severe forms of is absolutely essential for timely triaging of patients. While the clinical status, in particular Peripheral oxygen saturation (SpO2) levels and concurrent comorbidities of COVID 19 patients largely determines the need of their admittance to ICUs, several laboratory parameters may facilitate the assessment of disease severity. In hospitalized patients, clinicians should consider low lymphocyte count as well as the serum levels of CRP, D dimers, ferritin and IL 6 which may be used in risk stratification to predict severe and fatal COVID 19. The more several or all of these parameters are altered, the more likely it is that the course of the disease will be unfavourable.", "corpus_id": 216647946, "venue": "International Journal of Infectious Diseases", "year": 2020, "author_names": [ "Thirumalaisamy P Velavan", "Christian G Meyer" ], "n_citations": 226, "n_key_citations": 4, "score": 0 }, { "doc_id": "214616033", "title": "Catheterization Laboratory Considerations During the Coronavirus (COVID 19) Pandemic", "abstract": "Coronavirus disease 2019 (COVID 19) has placed an enormous strain on the health care systems of the nations where it has spread widely, with specific implications of the disease on practice in the catheterization laboratory. These implications include how we might modify practice for standard", "corpus_id": 214616033, "venue": "Journal of the American College of Cardiology", "year": 2020, "author_names": [ "Frederick G P Welt", "Pinak B Shah", "Herbert D Aronow", "Anna E Bortnick", "Timothy D Henry", "Matthew W Sherwood", "Michael N Young", "Laura Davidson", "Sabeeda Kadavath", "Ehtisham Mahmud", "Ajay J Kirtane" ], "n_citations": 299, "n_key_citations": 3, "score": 0 }, { "doc_id": "213192250", "title": "The critical role of laboratory medicine during coronavirus disease 2019 (COVID 19) and other viral outbreaks", "abstract": "Abstract Coronavirus disease 2019, abbreviated to COVID 19 and sustained by the severe acute respiratory syndrome coronavirus 2 (SARS CoV 2) is the latest biological hazard to assume the relevance of insidious worldwide threat. One obvious question that is now engaging the minds of many scientists and healthcare professionals is whether and eventually how laboratory medicine could efficiently contribute to counteract this and other (future) viral outbreaks. Despite there being evidence that laboratory tests are vital throughout many clinical pathways, there are at least three major areas where in vitro diagnostics can also provide essential contributions to diagnostic reasoning and managed care of patients with suspected or confirmed SARS CoV 2 infection. These include etiological diagnosis, patient monitoring, as well as epidemiologic surveillance. Nonetheless, some structural and practical aspects may generate substantial hurdles in providing timely and efficient response to this infectious emergency, which basically include inadequate (insufficient) environment and shortage of technical and human resources for facing enhanced volume of tests on many infected patients, some of whom are with severe disease. Some proactive and reactive strategies may hence be identified to confront this serious healthcare challenge, which entail major investments on conventional laboratory resources, reinforcement of regional networks of clinical laboratories, installation of mobile laboratories, as well as being proactive in establishing laboratory emergency plans.", "corpus_id": 213192250, "venue": "Clinical chemistry and laboratory medicine", "year": 2020, "author_names": [ "Giuseppe Lippi", "Mario Plebani" ], "n_citations": 163, "n_key_citations": 6, "score": 0 }, { "doc_id": "220412374", "title": "The emerging spectrum of COVID 19 neurology: clinical, radiological and laboratory findings", "abstract": "Paterson, Brown et al. present a case series of 43 patients with neurological complications of SARS CoV 2 infection. The neurological syndromes include encephalopathies, encephalitis, acute disseminated encephalomyelitis with haemorrhagic change, transverse myelitis, ischaemic stroke, and Guillain Barre syndrome.", "corpus_id": 220412374, "venue": "Brain a journal of neurology", "year": 2020, "author_names": [ "Ross W Paterson", "Rachel L Brown", "Laura A Benjamin", "Ross Nortley", "Sarah Wiethoff", "Tehmina Bharucha", "Dipa L Jayaseelan", "Guru Kumar", "Rhian E Raftopoulos", "Laura Zambreanu", "Vinojini Vivekanandam", "Anthony Khoo", "Ruth Geraldes", "Krishna Chinthapalli", "Elena Boyd", "Hatice Tuzlali", "Gary Price", "Gerry Christofi", "Jasper M Morrow", "Patricia Mcnamara", "Benjamin C Mcloughlin", "Soon Tjin Lim", "Puja R Mehta", "Viva Levee", "Stephen Keddie", "Wisdom Yong", "S Anand Trip", "Alexander J M Foulkes", "Gary R Hotton", "Thomas D Miller", "Alex D Everitt", "Christopher James Carswell", "Nicholas W S Davies", "Michael Yoong", "David Attwell", "Jemeen Sreedharan", "Eli Silber", "Jonathan M Schott", "Arvind Chandratheva", "Richard J Perry", "Robert Simister", "Anna M Checkley", "Nicky Longley", "Simon Francis Farmer", "Francesco Carletti", "Catherine F Houlihan", "Maria Thom", "Michael P T Lunn", "Jennifer E Spillane", "Robin S Howard", "Angela Vincent", "David John Werring", "Chandrashekar Hoskote", "Hans Rolf Jager", "Hadi Manji", "Michael S Zandi" ], "n_citations": 425, "n_key_citations": 8, "score": 0 }, { "doc_id": "212728798", "title": "Potential preanalytical and analytical vulnerabilities in the laboratory diagnosis of coronavirus disease 2019 (COVID 19)", "abstract": "Abstract A novel zoonotic coronavirus outbreak is spreading all over the world. This pandemic disease has now been defined as novel coronavirus disease 2019 (COVID 19) and is sustained by severe acute respiratory syndrome coronavirus 2 (SARS CoV 2) As the current gold standard for the etiological diagnosis of SARS CoV 2 infection is (real time) reverse transcription polymerase chain reaction (rRT PCR) on respiratory tract specimens, the diagnostic accuracy of this technique shall be considered a foremost prerequisite. Overall, potential RT PCR vulnerabilities include general preanalytical issues such as identification problems, inadequate procedures for collection, handling, transport and storage of the swabs, collection of inappropriate or inadequate material (for quality or volume) presence of interfering substances, manual errors, as well as specific aspects such as sample contamination and testing patients receiving antiretroviral therapy. Some analytical problems may also contribute to jeopardize the diagnostic accuracy, including testing outside the diagnostic window, active viral recombination, use of inadequately validated assays, insufficient harmonization, instrument malfunctioning, along with other specific technical issues. Some practical indications can hence be identified for minimizing the risk of diagnostic errors, encompassing the improvement of diagnostic accuracy by combining clinical evidence with results of chest computed tomography (CT) and RT PCR, interpretation of RT PCR results according to epidemiologic, clinical and radiological factors, recollection and testing of upper (or lower) respiratory specimens in patients with negative RT PCR test results and high suspicion or probability of infection, dissemination of clear instructions for specimen (especially swab) collection, management and storage, together with refinement of molecular target(s) and thorough compliance with analytical procedures, including quality assurance.", "corpus_id": 212728798, "venue": "Clinical chemistry and laboratory medicine", "year": 2020, "author_names": [ "Giuseppe Lippi", "Ana-Maria Simundic", "Mario Plebani" ], "n_citations": 371, "n_key_citations": 9, "score": 0 } ]

[ { "doc_id": "118786809", "title": "G.P. Nason: Wavelet Methods in Statistics with r", "abstract": "", "corpus_id": 118786809, "venue": "", "year": 2011, "author_names": [ "Richard Webster", "R M Lark" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "122058110", "title": "Wavelet Methods in Statistics with R by G.P. Nason", "abstract": "", "corpus_id": 122058110, "venue": "", "year": 2009, "author_names": [ "Carl M O'Brien" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "128424456", "title": "The nature and significance of pseudotachylite from the Nason terrane, North Cascade Mountains, Washington", "abstract": "Abstract Pseudotachylite has been recently discovered at numerous localities in the Nason terrane of the North Cascade Mountains, Washington. The pseudotachylite is widespread, not associated with any single major fault or shear zone, and tends to occur in narrow foliation parallel zones. Single pseudotachylite veins range in thickness from less than 0.1 to 10 cm. Veins and networks of veins occur in six distinct types, and these form the basis of a suggested classification scheme. Multiple generations of pseudotachylite are present in some samples. Host lithologies include quartz diorite, semipelitic schist, tonalite, amphibolite and especially graphitic pelitic schist. Glassy veins are rare; most pseudotachylite is apparently holocrystalline. Spherulites, vesicles and dendritic microphenocrysts are present and indicate a frictional melt origin. The ubiquitous occurrence of cataclasite xenoliths within the pseudotachylite, along with other textural observations, indicates that in the Nason terrane, the development of cataclasite zones was the precursor to pseudotachylite generation. It is inferred that cataclastic deformation of the schist provided the strain softening which resulted in faulting and pseudotachylite generation. The water rich and ultra fine grained matrix of the cataclasite was an ideal starting material for pseudotachylite generation. Based upon bulk chemistry of host lithologies and microprobe analyses of the pseudotachylite, it appears that the pseudotachylite formed as a result of a virtually complete melting of the pelitic (i.e. non quartz vein) component of the schist. Where pseudotachylite occurs within pelitic schist alone, the composition of the pseudotachylite is very similar to the pelitic component of the schist, while the composition of veins cutting tonalite gneiss in addition to pelitic schist appears to define a mixing line between these two lithologies. This suggests either participation of the tonalite during initial melting, or subsequent assimilation of gneiss into the melt.", "corpus_id": 128424456, "venue": "", "year": 1989, "author_names": [ "Jerry F Magloughlin" ], "n_citations": 68, "n_key_citations": 3, "score": 1 }, { "doc_id": "125478095", "title": "Review of Particle Physics, 2016 2017", "abstract": "The Review summarizes much of particle physics and cosmology. Using data from previous editions, plus 3,283 new measurements from 899 papers, we list, evaluate, and average measured properties of gauge bosons and the recently discovered Higgs boson, leptons, quarks, mesons, and baryons. We summarize searches for hypothetical particles such as heavy neutrinos, supersymmetric and technicolor particles, axions, dark photons, etc. All the particle properties and search limits are listed in Summary Tables. We also give numerous tables, figures, formulae, and reviews of topics such as Supersymmetry, Extra Dimensions, Particle Detectors, Probability, and Statistics. Among the 112 reviews are many that are new or heavily revised including those on: Dark Energy, Higgs Boson Physics, Electroweak Model, Neutrino Cross Section Measurements, Monte Carlo Neutrino Generators, Top Quark, Dark Matter, Dynamical Electroweak Symmetry Breaking, Accelerator Physics of Colliders, High Energy Collider Parameters, Big Bang Nucleosynthesis, Astrophysical Constants and Cosmological Parameters. All tables, listings, and reviews (and errata) are also available on the Particle Data Group website: http:/pdg.lbl.gov.", "corpus_id": 125478095, "venue": "", "year": 2014, "author_names": [ "Claudia Patrignani", "Peter J Richardson", "O Zenin", "Ren-Yuan Zhu", "A Vogt", "S Pagan Griso", "L Garren", "Donald E Groom", "Marek Karliner", "David Asner", "Torbjorn Sjostrand", "Jurgen Beringer", "Anton Godizov", "Siegfried Bethke", "Vladimir A Petrov", "Gilles Gerbier", "R Kowalewski", "Paolo Nason", "Sheldon Stone", "Yoshihide Sakai", "Youngil Kwon", "D R Tovey", "O Schneider", "M Titov", "Marco Silari", "A Cerri", "G P Salam", "Augusto Ceccucci", "Ron Workman", "Roman Ryutin", "Thomas Mannel", "James G Smith", "F Moortgat", "Michael R Pennington", "Fabio Sauli", "Kate Scholberg", "Christoph Hanhart", "Takayuki Sumiyoshi", "B N Ratcliff", "Howard Baer", "J A Matthews", "H R Gallagher", "Dhiman Chakraborty", "Thomas A DeGrand", "Andr'e de Gouvea", "Andreas Hocker", "Chunqing Lin", "M Antonelli", "Arnulf Quadt", "Paul Langacker", "Giuseppe Venanzoni", "Yoshinari Hayato", "Richard Van de Water", "G D'ambrosio", "Georg Weiglein", "Lawrence Richard Wiencke", "K S Lugovsky", "Michael J Mortonson", "Gray Rybka", "Howard E Haber", "Matthias Neubert", "James Jackson", "Hans Bichsel", "William J Marciano", "Ken-ichi Hikasa", "Alex Pomarol", "Peter Skands", "Sergio Sanchez Navas", "M Syphers", "Juan Jose Hernandez-Rey", "David I F Wands", "Allan J Schwartz", "A Freitas", "G Aielli", "Zoltan Ligeti", "Andreas Ringwald", "P Nevski", "Thomas Alan Shutt", "Jonathan L Rosner", "Toru Hyodo", "Vladimir I Belousov", "Alberto Masoni", "Douglas Scott", "David H Weinberg", "Brian D Fields", "Geralyn P Zeller", "Maxim Bychkov", "Kaustubh Agashe", "Hitoshi Murayama", "Keith A Olive", "Leslie J Rosenberg", "Kaoru Hagiwara", "Daniel A Dwyer", "Manuel Drees", "Oliver Buchmueller", "C Grab", "Sw Banerjee", "Maury Charles Goodman", "K D Irwin", "George F Smoot", "David Milstead", "Brian K Heltsley", "Lothar Tiator", "Tullio Basaglia", "N P Tkachenko", "Daniel de Florian", "Georg Raffelt", "H Spieler", "F Zimmermann", "Jonas Rademacker", "Simona Rolli", "Christophe Grojean", "Christopher T C Sachrajda", "", "Masaharu Tanabashi", "Claude Amsler", "Thomas Gutsche", "Jens Erler", "Craig Woody", "J Huston", "K Monig", "German Valencia", "Uli Katz", "John Terning", "John Lewis Womersley", "Alberto Lusiani", "John Ellis", "K F Johnson", "David R Ward", "Andreas Piepke", "R M Barnett", "Weiming Yao", "Eberhard Klempt", "Serguey T Petcov", "A Stahl", "Robert Samuel Thorne", "G Brooijmans", "Paula Eerola", "M G Vincter", "Piotr Zyla", "Subir Sarkar", "M White", "Fabio Maltoni", "Gunther Dissertori", "Yukinari Sumino", "Ch Spiering", "Katherine Copic", "M Carena", "B Krusche", "Tim Gershon", "F Krauss", "R Sekhar Chivukula", "Nikos Varelas", "Wolfgang Walkowiak", "Christian Bauer", "Thibault Damour", "Stefan Roesler", "Fuminobu Takahashi", "Junji Hisano", "Koji Terashi", "Ulf-G Meissner", "Ofer Lahav", "Bogdan A Dobrescu", "Andrew R Liddle", "M D'Onofrio", "Orin I Dahl", "M W Grunewald", "Atul Gurtu", "M C Chen", "Charles G Wohl", "Stuart Raby", "Stephen R Sharpe", "T M Liss", "Scott Patrick Wakely", "Semen Eidelman", "Herbert K Dreiner", "R N Cahn", "Petr Vogel", "Lincoln Wolfenstein", "Erick Weinberg", "Morgan O'hagan Wascko", "Ross E Mitchell", "Tony Gherghetta", "A V Gritsan", "S Willocq", "Shoji Hashimoto", "Annette Holtkamp", "Laurence S Littenberg", "Michal Kreps", "Meenakshi Narain", "Wulf Fetscher", "J Holder", "Edward Blucher", "A Romaniouk", "Paul de Jong", "Brian Foster", "S B Lugovsky", "Yu V Kuyanov", "A D Martin", "T Skwarnicki", "J A Parsons", "Hannes J Gerber", "Nils A Tornqvist", "Kenneth G Hayes", "Yosef Nir", "C W Walter", "Christian Lippmann", "J W Laiho", "O Biebel", "Marumi Kado", "Aneesh V Manohar", "James J Beatty", "Glen Cowan", "Yasuhiro Makida", "Spencer R Klein", "John A Peacock", "M Doser", "S M Spanier", "Arthur Hebecker", "Ko Nakamura", "Paolo Molaro" ], "n_citations": 3032, "n_key_citations": 103, "score": 1 }, { "doc_id": "119257284", "title": "A general framework for implementing NLO calculations in shower Monte Carlo programs: the POWHEG BOX", "abstract": "In this work we illustrate the POWHEG BOX, a general computer code framework for implementing NLO calculations in shower Monte Carlo programs according to the POWHEG method. Aim of this work is to provide an illustration of the needed theoretical ingredients, a view of how the code is organized and a description of what a user should provide in order to use it.", "corpus_id": 119257284, "venue": "", "year": 2010, "author_names": [ "S Alioli", "Paolo Nason", "C Oleari", "Emanuele Re" ], "n_citations": 2726, "n_key_citations": 151, "score": 1 }, { "doc_id": "125940673", "title": "APS Review of Particle Physics, 2018", "abstract": "The complete Review(both volumes) is published online on the website of the Particle Data Group(http:/pdg.lbl.gov) and in a journal. Volume 1 is available in print as thePDG Book. AParticle Physics Bookletwith the Summary Tables and essential tables, figures, and equations from selected review articles is also available.", "corpus_id": 125940673, "venue": "", "year": 2018, "author_names": [ "Masaharu Tanabashi", "Peter J Richardson", "Alessandro Bettini", "A Vogt", "L Garren", "Allan J Schwartz", "Koji Terashi", "Marek Karliner", "R Sekhar Chivukula", "Torbjorn Sjostrand", "Jurgen Beringer", "Siegfried Bethke", "Gilles Gerbier", "Paolo Nason", "Herbert K Dreiner", "Youngil Kwon", "James J Beatty", "E Pianori", "Marco Silari", "John A Peacock", "A Cerri", "Andr'e de Gouvea", "Ren-Yuan Zhu", "Christian Bauer", "Thomas Mannel", "T M Liss", "Michael R Pennington", "D R Tovey", "Fabio Sauli", "K F Johnson", "Stephen R Sharpe", "Christoph Hanhart", "Takayuki Sumiyoshi", "Jeffry Anderson", "Howard Baer", "J A Matthews", "H R Gallagher", "Dhiman Chakraborty", "Thomas A DeGrand", "Lawrence Richard Wiencke", "Howard E Haber", "Andreas Hocker", "F Moortgat", "M Antonelli", "Arnulf Quadt", "Junichi Tanaka", "Piotr Zyla", "Giuseppe Venanzoni", "Yoshinari Hayato", "G D'ambrosio", "Christopher T C Sachrajda", "Ulrike Thoma", "Gray Rybka", "Donald E Groom", "Matthias Neubert", "G P Salam", "Hans Bichsel", "Erick Weinberg", "Ken-ichi Hikasa", "Alex Pomarol", "Peter Skands", "Sergio Sanchez Navas", "David I F Wands", "A Freitas", "G Aielli", "Zoltan Ligeti", "Andreas Ringwald", "P Nevski", "Thomas Alan Shutt", "M Titov", "Toru Hyodo", "David H Weinberg", "Sheldon Stone", "Kaustubh Agashe", "Alberto Masoni", "Oliver Buchmuller", "Douglas Scott", "S L Zhu", "L Fuller", "S Pagan Griso", "A D Martin", "K S Lugovsky", "Hitoshi Murayama", "Kaoru Hagiwara", "Roman Ryutin", "Manuel Drees", "C Grab", "Sw Banerjee", "Brian D Fields", "Maury Charles Goodman", "Maxim Bychkov", "Brian K Heltsley", "Daniel A Dwyer", "Tullio Basaglia", "Chunqing Lin", "Daniel de Florian", "Georg Raffelt", "H Spieler", "F Zimmermann", "Jonas Rademacker", "Simona Rolli", "Christophe Grojean", "", "Claude Amsler", "Julien Lesgourgues", "Thomas Gutsche", "Jens Erler", "K Monig", "German Valencia", "Yuri Gershtein", "John Terning", "James G Smith", "John Lewis Womersley", "Alberto Lusiani", "John Ellis", "Yoshihide Sakai", "Andreas Piepke", "Eberhard Klempt", "A Stahl", "K D Irwin", "A V Gritsan", "Paula Eerola", "Vladimir A Petrov", "George F Smoot", "Subir Sarkar", "Geralyn P Zeller", "William J Marciano", "Keith A Olive", "Claudia Patrignani", "Ron Workman", "Fabio Maltoni", "Gunther Dissertori", "Yukinari Sumino", "Ch Spiering", "Yu V Kuyanov", "Ulf-G Meissner", "M Carena", "B Krusche", "Ross E Mitchell", "Tim Gershon", "F Krauss", "Meenakshi Narain", "Nikos Varelas", "Wolfgang Walkowiak", "Kenneth G Hayes", "Augusto Ceccucci", "Stefan Roesler", "Fuminobu Takahashi", "Junji Hisano", "Petr Vogel", "Morgan O'hagan Wascko", "Licia Verde", "Serguey T Petcov", "M Syphers", "Vladimir I Belousov", "Ofer Lahav", "O Zenin", "Craig Woody", "Andrew R Liddle", "M D'Onofrio", "Marumi Kado", "Orin I Dahl", "Spencer R Klein", "Micha Moskovic", "David Asner", "Atul Gurtu", "David R Ward", "M C Chen", "Sven Heinemeyer", "R Kowalewski", "Anton Godizov", "David Milstead", "M G Vincter", "Semen Eidelman", "R B Firestone", "Leslie J Rosenberg", "M W Grunewald", "Keith Black", "N P Tkachenko", "Bogdan A Dobrescu", "Tony Gherghetta", "Weiming Yao", "S Willocq", "R M Barnett", "Annette Holtkamp", "Laurence S Littenberg", "Michal Kreps", "Robert Samuel Thorne", "O Schneider", "Paolo Molaro", "Wulf Fetscher", "J Holder", "Nils A Tornqvist", "Edward Blucher", "Paul Schaffner", "Uli Katz", "A Romaniouk", "Paul de Jong", "Brian Foster", "Shoji Hashimoto", "Kate Scholberg", "Richard Van de Water", "T Skwarnicki", "C W Walter", "J A Parsons", "Georg Weiglein", "R N Cahn", "Charles G Wohl", "Jonathan L Rosner", "V S Lugovsky", "B N Ratcliff", "M White", "Yosef Nir", "Hannes J Gerber", "Scott Patrick Wakely", "Christian Lippmann", "J W Laiho", "O Biebel", "Juan Jose Hernandez-Rey", "Thibault Damour", "Glen Cowan", "Yasuhiro Makida", "Lothar Tiator", "M Doser", "S M Spanier", "S B Lugovsky", "Arthur Hebecker", "Ko Nakamura", "Aneesh V Manohar" ], "n_citations": 4093, "n_key_citations": 14, "score": 1 }, { "doc_id": "104310923", "title": "Nanoparticle aggregation in a freshwater river: the role of engineered surface coatings", "abstract": "Within aquatic environments, the aggregation of ENPs has been identified as an important process affecting their environmental fate. Previous research using simple model mediums has demonstrated that engineered surface coatings applied to ENPs can alter their aggregation behavior. However, the relevance and effect of these surface coatings on ENPs dispersed in complex aquatic mediums is largely unknown. The objective of the current work was to explore this topic further using gold nanoparticles (AuNPs) with different engineered surface coatings as model ENPs. AuNPs with neutral or negatively charged, covalently bound surface coatings (polyethylene glycol [PEG] or carboxylated PEG, respectively) were found to be stable in both raw and filtered river water, while AuNPs with positively charged (branched polyethylenimine, aminated PEG) or electrostatically bound (citrate) surface coatings readily aggregated. For the model ENPs that aggregated, their average percent removal after mixing in the filtered river water was similar to that measured after the same period in raw river water, revealing that homoaggregation was dominant relative to heteroaggregation. To quantify the effect of the surface coatings on the colloidal stability of the model ENPs, we attempted to estimate homo and heteroaggregation attachment efficiency factors (ahomo and ahetero, respectively) using a recently reported functional assay. A number of challenges preventing these direct calculations in this system are discussed. However, from modelling it was inferred that ahomo ahetero. We find that ENP colloidal stability was related to eco corona formation (i.e. adsorption of natural organic matter) which was regulated by the properties of the engineered surface coatings. Overall, the results of the batch experiments demonstrate that engineered surface coatings can affect ENP colloidal stability in a complex medium, further highlighting the need to consider this factor when investigating the environmental fate of ENPs.", "corpus_id": 104310923, "venue": "", "year": 2019, "author_names": [ "Mark C Surette", "Jeffrey A Nason" ], "n_citations": 28, "n_key_citations": 0, "score": 0 }, { "doc_id": "17881272", "title": "A new method for combining NLO QCD with shower Monte Carlo algorithms", "abstract": "I show that with simple extensions of the shower algorithms in Monte Carlo programs, one can implement NLO corrections to the hardest emission that overcome the problems of negative weighted events found in previous implementations. Simple variants of the same method can be used for an improved treatment of matrix element corrections in Shower Monte Carlo programs.", "corpus_id": 17881272, "venue": "", "year": 2004, "author_names": [ "Paolo Nason" ], "n_citations": 2573, "n_key_citations": 137, "score": 0 }, { "doc_id": "169839981", "title": "The Ties That Unbind: Socialization and Business Owning Family Reference Point Shift", "abstract": "Existing theory describes how family firms utilize a unique socioemotional reference point to frame strategic decision making, but scholars have not fully considered family level strategy or change.", "corpus_id": 169839981, "venue": "Academy of Management Review", "year": 2019, "author_names": [ "Robert S Nason", "Ambra Mazzelli", "Michael Carney" ], "n_citations": 20, "n_key_citations": 2, "score": 0 }, { "doc_id": "9659558", "title": "Rational Design of Envelope Identifies Broadly Neutralizing Human Monoclonal Antibodies to HIV 1", "abstract": "Designer Anti HIV Developing a protective HIV vaccine remains a top global health priority. One strategy to identify potential vaccine candidates is to isolate broadly neutralizing antibodies from infected individuals and then attempt to elicit the same antibody response through vaccination (see the Perspective by Burton and Weiss) Wu et al. (p. 856, published online 8 July) now report the identification of three broadly neutralizing antibodies, isolated from an HIV 1 infected individual, that exhibited great breadth and potency of neutralization and were specific for the co receptor CD4 binding site of the glycoprotein 120 (gp120) part of the viral Env spike. Zhou et al. (p. 811, published online 8 July) analyzed the crystal structure for one of these antibodies, VRC01, in complex with an HIV 1 gp120. VRC01 focuses its binding onto a conformationally invariant domain that is the site of initial CD4 attachment, which allows the antibody to overcome the glycan and conformational masking that diminishes the neutralization potency of most CD4 binding site antibodies. The epitopes recognized by these antibodies suggest potential immunogens that can inform vaccine design. A human antibody achieves broad neutralization by binding the viral site of recognition for the primary host receptor, CD4. Cross reactive neutralizing antibodies (NAbs) are found in the sera of many HIV 1 infected individuals, but the virologic basis of their neutralization remains poorly understood. We used knowledge of HIV 1 envelope structure to develop antigenically resurfaced glycoproteins specific for the structurally conserved site of initial CD4 receptor binding. These probes were used to identify sera with NAbs to the CD4 binding site (CD4bs) and to isolate individual B cells from such an HIV 1 infected donor. By expressing immunoglobulin genes from individual cells, we identified three monoclonal antibodies, including a pair of somatic variants that neutralized over 90% of circulating HIV 1 isolates. Exceptionally broad HIV 1 neutralization can be achieved with individual antibodies targeted to the functionally conserved CD4bs of glycoprotein 120, an important insight for future HIV 1 vaccine design.", "corpus_id": 9659558, "venue": "Science", "year": 2010, "author_names": [ "Xueling Wu", "Zhi-yong Yang", "Yuxing Li", "Carl-Magnus Hogerkorp", "William R Schief", "Michael S Seaman", "Tongqing Zhou", "Stephen D Schmidt", "Lan Wu", "Ling Xu", "Nancy S Longo", "K Mckee", "Sijy O'dell", "Mark K Louder", "Diane L Wycuff", "Yu Feng", "Martha C Nason", "Nicole A Doria-Rose", "Mark Connors", "Peter D Kwong", "Mario Roederer", "Richard T Wyatt", "Gary J Nabel", "John R Mascola" ], "n_citations": 1529, "n_key_citations": 166, "score": 0 } ]

[ { "doc_id": "222220203", "title": "Data Analysis Framework of Human Resource Estimation System Based on MySQL SAAS and Fuzzy Clustering", "abstract": "Data analysis framework of the tourism enterprise human resource estimation system based on MySQL and fuzzy clustering is designed and implemented in this paper. Firstly, the novel fuzzy analysis framework is proposed. The order reduction process first reduces Type 2 fuzzy sets to Type 1 fuzzy sets and then uses the conventional defuzzification method of Type 1 fuzzy sets to obtain the accurate output, this is adopted as the data pre processing model. Secondly, SAAS is analyzed. As a container for all kinds of services, component management services provide interface services to the platform, this efficient model is used to construct the analytic framework. Lastly, the system is simulated and validated. Compared with the latest models, the proposed can achieve better performance.", "corpus_id": 222220203, "venue": "2020 International Conference on Smart Electronics and Communication (ICOSEC)", "year": 2020, "author_names": [ "Jianchao Ouyang", "Hongxiang Ge" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "235858848", "title": "Design and Implementation of Physical Education Teaching and Management System Based on B/s and Mysql Database", "abstract": "In view of the current sports teaching management mode is relatively backward, based on B/S structure Django framework, combined with streaming media and MySQL database technology, this paper designs and develops a set of sports teaching management system. The system includes information release, communication and Q&A, course management, on line on demand of course, and score query. It can help students learn sports knowledge independently and individually, meet the demand of interaction between teachers and students in physical education teaching, and improve teaching quality and management efficiency. After testing, the system runs smoothly and all functions are normal. It can meet the requirements of physical education teaching and management in the new era.", "corpus_id": 235858848, "venue": "", "year": 2020, "author_names": [], "n_citations": 0, "n_key_citations": 0, "score": 2 }, { "doc_id": "236919663", "title": "Development and Implementation of Counselor Work Management Information System based on MySQL and Data Center", "abstract": "Counselors are guides and intimate friends for the healthy growth of college students. Counselors' work efficiency has a direct impact on the overall efficiency of school student management. Due to many factors, such as the arrangement of college counselors, the working mechanism of students, the number of students and the proportion of college counselors, the efficiency of student management in many colleges and universities is low. At the same time, the number of counselors can not meet the actual needs of the complex student management. Data center can be understood as data centralized centralized processing center. It usually consists of one or more computer clusters and supporting network equipment, storage equipment, security equipment, power system, management and software, etc. This paper studies the information system of counselor's work management based on database and data center.", "corpus_id": 236919663, "venue": "2021 6th International Conference on Communication and Electronics Systems (ICCES)", "year": 2021, "author_names": [ "Hongmei Chen", "Junwei Li" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "215873639", "title": "Research on School Intelligent Classroom Management System Based on Internet of Things", "abstract": "Abstract With the increase in the number and size of school campuses, the issue of campus energy waste has received extensive attention. In order to monitor the environment of the classroom, control the electrical appliances to reduce energy consumption, and analyze the environment and utilization of the classroom, this paper develops an intelligent classroom management system based on the Internet of Things. In this system, the sensor suite of Shanghai Qixiang Technology Co. Ltd. is used as the basic suite of the Internet of Things. The storage model is established by the relational database MySQL and the non relational database HBase. And the B/S based website is the user interface. The storage overhead is reduced to a certain extent, and the energy waste in the classroom is effectively reduced.", "corpus_id": 215873639, "venue": "", "year": 2020, "author_names": [ "Zhi-Min Zhu", "Fangqin Xu", "Xia Gao" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "210956678", "title": "Design and Implementation of Part time Teacher Management System Based on Cloud Platform", "abstract": "Aiming at the problems of low efficiency, inconvenient use and high cost caused by the old design of traditional university teacher management system, a part time teacher management system based on cloud platform is designed. Reduce operational and management costs through the cloud platform, make the system easy to expand through reasonable database design, and easily achieve high cohesion and low coupling during system development. By adding two fields, effective time and expiration time, the data is controlled by the traceability while controlling the growth rate of the data volume. Through the use of JSON data format in MySQL, the system can easily customize the salary formula.", "corpus_id": 210956678, "venue": "", "year": 2020, "author_names": [ "Shucheng Liu", "Fangqin Xu" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "225749197", "title": "Research on Equipment Management System Based on Robot Laboratory", "abstract": "With the expansion of the scale of our hospital robot laboratory, equipment use, reserves are increasing, manual management equipment information has been unable to adapt to daily management, such as data record error rate increased, the number of experiments increased, equipment loss and maintenance is not clearly defined. In order to ensure the safety and accuracy of the equipment, a system of equipment management systems was developed as a result of the conversion to the use of management systems for the recording and storage of information. The design of this system is a perfect robot laboratory equipment management system based on the development of web framework technology for equipment management functions. The back end of this system uses the Java language, the SSM framework as the main body, the database is built by MySQL relational database, the front end page uses JSP, Bootstrap, jQuery and other technologies, and uses Eclipse project construction tools for system development. After a period of trial operation, the level of laboratory equipment management has been significantly improved.", "corpus_id": 225749197, "venue": "", "year": 2020, "author_names": [ "Chong Hu", "Xin Wang", "Yunhui Wang" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "231798502", "title": "Electronic student feedback management system based on web development", "abstract": "Nowadays, operation management performed by electronic systems in different life sectors is distributed and expanded swiftly due to several advantages that can be achieved, such as time reduction process, simplicity, and high accuracy of running operations. In the educational sector, performing student feedback electrolytically (using PC, Tablet, or Mobile) rather than the ordinary paper based methods saves staff and students' time and makes managing the data easier. This paper proposes a new approach for the Electronic Student Feedback Management System based on web programming, which consists of input, process, store, and retrieves information using a database. The system is based on the Accreditation Board for Engineering and Technology (ABET) questionnaire model, which is implemented using web development tools (HTML, CSS, Javascript, MySQL, and PHP with Apache web server) As a result, the proposed system was implemented successfully. The Electronic Engineering College officially adopted it at Ninevah University to perform the student feedback for the academic year 2018 2019, in which 4,282 student feedback applications (SFA) have been recorded. After that, statistical operations were done for extracting useful information effortlessly and accurately. As a result, more than 800 students made 4282 records have participated in the proposed system. This information can be quickly recorded and utilized to identify the weaknesses to address them in the next academic year.", "corpus_id": 231798502, "venue": "", "year": 2020, "author_names": [ "Fahad Layth Malallah", "Jamal Mahmood", "Mahmood Alfathe", "M M Irsyad Abdullah" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "235339731", "title": "Research and Design of Sensor Data Management System Based on Distributed Storage", "abstract": "Sensor data is one of the basic source of big data in the Internet of Things(IoT) It is the data that is sensed, measured, and transmitted by sensors with real time and dynamic characteristics. With the development of the IoT and big data technologies, new industries such as smart transportation, smart cities, and smart agriculture have gradually formed, resulting in an increasing demand for large scale data analysis and calculations. However, the storage architecture based on relational databases has been unable to meet the current needs in terms of data storage and data read and write speed. Therefore, this paper mainly studies the sensor data management system based on distributed storage, builds a Hadoop cluster, proposes a storage structure that combines the relational database MySQL with the distributed database HBase, designs a data migration module to satisfy real time sensor data monitoring and massive data storage requirements. In order to meet the needs of enterprises in actual production, SSM framework technology is used to build a sensor data management platform, covering the functions of system management, sensor data management, data exception management, sensor data real time monitoring, sensor node status monitoring, data statistical analysis, etc. The platform has good security and reliability, and can effectively improve the management efficiency of the enterprise. Finally, the experiment provides that the system has obvious advantages in data upload and query ability compared with the traditional storage architecture. It provides a good data environment for data analysis and data mining in the future.", "corpus_id": 235339731, "venue": "2020 International Conference on Computer Science and Management Technology (ICCSMT)", "year": 2020, "author_names": [ "Xiaotong Chi", "Wenjie Wang" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "227062150", "title": "Design and Implementation of Dormitory Management System based on SSM framework", "abstract": "Juding from the current situation, most of the dormitory management in Chinese colleges and universities is in the traditional manual processing mode, the cumbersome process greatly slows down the work speed of managers and discourages most of the students who intend to put forward their demands. Facing the low informatization of college dormitories, we analyze the feasibility and functional requirements of the student dormitory management system, and design a student dormitory management system using Java, SSM framework and MySQL database technology. The system is convenient for scientific and effective management of student dormitories, and it is easy to operate and practical for the management personnel. The Dormitory Management System (DMS) can realize the informatization of dormitory management.", "corpus_id": 227062150, "venue": "2020 International Conference on Information Science, Parallel and Distributed Systems (ISPDS)", "year": 2020, "author_names": [ "Zhibin Peng", "Taoli Liu", "Liying Mai" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "213152977", "title": "Research on Network Security System Detection Based on Mysql", "abstract": "Mysql Network Database Has the Characteristics of Complete Functions, Simple Operation, High Management Efficiency and High Running Speed, So It is Widely Used, Which Also Puts Forward High Requirements for Security. Mysql is the Most Popular Open Source Sql Database Management System, Mysql Software is an Open Source Software, \"Open Source\" Means Anyone Can Use and Change the Software. the System Enables Users to Realize Real Time Detection of Network Security through a Visual Interface, and Records Relevant Information of Intruders for Tracking and Investigation. as a Heterogeneous Open Source Relational Database Management System, Mysql Network Database Uses a Structured Query Language for Database Management. for Online Monitors, They Usually Run Continuously for a Long Time, the Amount of Data is Generally Huge, and the Operating Parameters Need to Be Modified in Real Time during Process Control. Therefore, How to Manage Data Files, Operating Condition Parameters, and Related Information Becomes Particularly Important.", "corpus_id": 213152977, "venue": "", "year": 2020, "author_names": [ "Hai-wei Fan" ], "n_citations": 0, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "221363373", "title": "A Model for Auto Calibration of Stereo Camera and Lidar Based on Neural Networks", "abstract": "The methodologies of cameras and Lidar fusion is widely researched over recent years, and the fusion of both sensors can provide us essential information from surrounding environment. However, it is not a straightforward task to utilize two sensor data due to the calibration challenges that align Lidar point cloud with the camera image pixels. One could calibrate both camera and Lidar before using, but in reality, errors are cumulated along with the time because of vibration or distortion of the platforms that sensors settled on. In this paper, we implemented a methodology to auto calibrate stereo cameras with a Lidar sensor using a deep neural network. The neural network takes two depth maps generated from stereo cameras and Lidar sensor as the input. Next, two separate convolutional neural network will extract features from the inputs. The features will be fused and fed to a global regression net, which will infer the calibration errors between two depth maps. Our evaluation showed that auto calibration network managed to fix the errors with different error ranges and a iterative calibration method is used to fix the cumulated error gradualy.", "corpus_id": 221363373, "venue": "", "year": 2020, "author_names": [ "Shan Wu" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "220713416", "title": "Neural Geometric Parser for Single Image Camera Calibration", "abstract": "We propose a neural geometric parser learning single image camera calibration for man made scenes. Unlike previous neural approaches that rely only on semantic cues obtained from neural networks, our approach considers both semantic and geometric cues, resulting in significant accuracy improvement. The proposed framework consists of two networks. Using line segments of an image as geometric cues, the first network estimates the zenith vanishing point and generates several candidates consisting of the camera rotation and focal length. The second network evaluates each candidate based on the given image and the geometric cues, where prior knowledge of man made scenes is used for the evaluation. With the supervision of datasets consisting of the horizontal line and focal length of the images, our networks can be trained to estimate the same camera parameters. Based on the Manhattan world assumption, we can further estimate the camera rotation and focal length in a weakly supervised manner. The experimental results reveal that the performance of our neural approach is significantly higher than that of existing state of the art camera calibration techniques for single images of indoor and outdoor scenes.", "corpus_id": 220713416, "venue": "ECCV", "year": 2020, "author_names": [ "Jinwoo Lee", "Minhyuk Sung", "Hyunjoon Lee", "Junho Kim" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "202734281", "title": "PST900: RGB Thermal Calibration, Dataset and Segmentation Network", "abstract": "In this work we propose long wave infrared (LWIR) imagery as a viable supporting modality for semantic segmentation using learning based techniques. We first address the problem of RGB thermal camera calibration by proposing a passive calibration target and procedure that is both portable and easy to use. Second, we present PST900, a dataset of 894 synchronized and calibrated RGB and Thermal image pairs with per pixel human annotations across four distinct classes from the DARPA Subterranean Challenge. Lastly, we propose a CNN architecture for fast semantic segmentation that combines both RGB and Thermal imagery in a way that leverages RGB imagery independently. We compare our method against the state of the art and show that our method outperforms them in our dataset.", "corpus_id": 202734281, "venue": "2020 IEEE International Conference on Robotics and Automation (ICRA)", "year": 2020, "author_names": [ "Shreyas S Shivakumar", "Neil Rodrigues", "Alex Zhou", "Ian D Miller", "Vijay R Kumar", "Camillo Jose Taylor" ], "n_citations": 16, "n_key_citations": 1, "score": 0 }, { "doc_id": "208202164", "title": "Camera to Robot Pose Estimation from a Single Image", "abstract": "We present an approach for estimating the pose of an external camera with respect to a robot using a single RGB image of the robot. The image is processed by a deep neural network to detect 2D projections of keypoints (such as joints) associated with the robot. The network is trained entirely on simulated data using domain randomization to bridge the reality gap. Perspective n point (PnP) is then used to recover the camera extrinsics, assuming that the camera intrinsics and joint configuration of the robot manipulator are known. Unlike classic hand eye calibration systems, our method does not require an off line calibration step. Rather, it is capable of computing the camera extrinsics from a single frame, thus opening the possibility of on line calibration. We show experimental results for three different robots and camera sensors, demonstrating that our approach is able to achieve accuracy with a single frame that is comparable to that of classic off line hand eye calibration using multiple frames. With additional frames from a static pose, accuracy improves even further. Code, datasets, and pretrained models for three widely used robot manipulators are made available.1", "corpus_id": 208202164, "venue": "2020 IEEE International Conference on Robotics and Automation (ICRA)", "year": 2020, "author_names": [ "Timothy E Lee", "Jonathan Tremblay", "Thang To", "Jia Cheng", "Terry Mosier", "Oliver Kroemer", "Dieter Fox", "Stan Birchfield" ], "n_citations": 19, "n_key_citations": 4, "score": 1 }, { "doc_id": "222096016", "title": "Literature Survey on Multi Camera System and Its Application", "abstract": "A multi camera system combines features from different cameras to exploit a scene of an event to increase the output image quality. The combination of two or more cameras requires prior settings in terms of calibration and architecture. Therefore, this paper surveys the available literature in terms of multi camera systems' physical arrangements, calibrations, algorithms, and their advantages and disadvantages. We also survey the recent developments and advancements in four areas of multi camera system applications, which are surveillance, sports, education, and mobile phones. In the surveillance system, the combination of multiple heterogeneous cameras and the discovery of Pan Tilt Zoom (PTZ) and smart cameras have brought tremendous achievements in the area of multi camera control and coordination. Different approaches have been proposed to facilitate effective collaboration and monitoring among the camera network. Furthermore, the application of multi cameras in sports has made the games more interesting in the aspect of analyses and transparency. The application of the multi camera system in education has taken education beyond the four walls of the class. The method of teaching, student attendance enrollment, determination of students' attention, teacher and student assessment can now be determined with ease, and all forms of proxy and manipulation in education can be reduced by using a multi camera system. Besides, the number of cameras featuring on smartphones is gaining noticeable recognition. However, most of these cameras serve different purposes, from zooming, telephoto, and wider Field of View (FOV) Therefore, future smartphones should be expecting more cameras or the development would be in a different direction.", "corpus_id": 222096016, "venue": "IEEE Access", "year": 2020, "author_names": [ "Adeshina Sirajdin Olagoke", "Haidi Ibrahim", "Soo Siang Teoh" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "214610023", "title": "DeepPTZ: Deep Self Calibration for PTZ Cameras", "abstract": "Rotating and zooming cameras, also called PTZ (Pan Tilt Zoom) cameras, are widely used in modern surveillance systems. While their zooming ability allows acquiring detailed images of the scene, it also makes their calibration more challenging since any zooming action results in a modification of their intrinsic parameters. Therefore, such camera calibration has to be computed online; this process is called self calibration. In this paper, given an image pair captured by a PTZ camera, we propose a deep learning based approach to automatically estimate the focal length and distortion parameters of both images as well as the rotation angles between them. The proposed approach relies on a dual Siamese structure, imposing bidirectional constraints. The proposed network is trained on a large scale dataset automatically generated from a set of panoramas. Empirically, we demonstrate that our proposed approach achieves competitive performance with respect to both deep learning based and traditional state of the art methods. Our code and model will be publicly available at https:/github.com/ChaoningZhang/DeepPTZ.", "corpus_id": 214610023, "venue": "2020 IEEE Winter Conference on Applications of Computer Vision (WACV)", "year": 2020, "author_names": [ "Chaoning Zhang", "Francois Rameau", "Junsik Kim", "Dawit Mureja Argaw", "Jean Charles Bazin", "In So Kweon" ], "n_citations": 13, "n_key_citations": 1, "score": 0 }, { "doc_id": "218870415", "title": "Learning Camera Miscalibration Detection", "abstract": "Self diagnosis and self repair are some of the key challenges in deploying robotic platforms for long term real world applications. One of the issues that can occur to a robot is miscalibration of its sensors due to aging, environmental transients, or external disturbances. Precise calibration lies at the core of a variety of applications, due to the need to accurately perceive the world. However, while a lot of work has focused on calibrating the sensors, not much has been done towards identifying when a sensor needs to be recalibrated. This paper focuses on a data driven approach to learn the detection of miscalibration in vision sensors, specifically RGB cameras. Our contributions include a proposed miscalibration metric for RGB cameras and a novel semi synthetic dataset generation pipeline based on this metric. Additionally, by training a deep convolutional neural network, we demonstrate the effectiveness of our pipeline to identify whether a recalibration of the camera's intrinsic parameters is required or not. The code is available at http:/github.com/ethz asl/camera_miscalib_detection.", "corpus_id": 218870415, "venue": "2020 IEEE International Conference on Robotics and Automation (ICRA)", "year": 2020, "author_names": [ "Andrei Cramariuc", "Aleksandar Petrov", "Rohit Suri", "Mayank Mittal", "Roland Y Siegwart", "Cesar Cadena" ], "n_citations": 2, "n_key_citations": 1, "score": 0 }, { "doc_id": "221340682", "title": "Indirect Object to Robot Pose Estimation from an External Monocular RGB Camera", "abstract": "We present a robotic grasping system that uses a single external monocular RGB camera as input. The object to robot pose is computed indirectly by combining the output of two neural networks: one that estimates the object to camera pose, and another that estimates the robot to camera pose. Both networks are trained entirely on synthetic data, relying on domain randomization to bridge the sim to real gap. Because the latter network performs online camera calibration, the camera can be moved freely during execution without affecting the quality of the grasp. Experimental results analyze the effect of camera placement, image resolution, and pose refinement in the context of grasping several household objects. We also present results on a new set of 28 textured household toy grocery objects, which have been selected to be accessible to other researchers. To aid reproducibility of the research, we offer 3D scanned textured models, along with pre trained weights for pose estimation.1", "corpus_id": 221340682, "venue": "2020 IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS)", "year": 2020, "author_names": [ "Jonathan Tremblay", "Stephen Tyree", "Terry Mosier", "Stan Birchfield" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "219019410", "title": "Optimized calibration method for ultra field dual bands cameras based on thermal radiation checkerboard", "abstract": "Abstract Camera calibration is a vital and important work for machine vision. In the paper, an optimized calibration method for ultra field dual bands cameras is proposed, which is based on the designed thermal radiation checkerboard. The optimizations are achieved in subpixel location, center location and mapping relationship, respectively. Specifically, the subpixel corner is located by performing the designed variable quadrilateral template on edge gradients and calculating their minimum orthogonal value. Then, the center location is accomplished through Gaussian fitting, in which the bottom point is taken as the potential center in iterations. Moreover, the RBF network is employed to replace the polynomial fitting and fit the mapping relationship between the camera coordinates and sensor coordinates. Thus, the accuracy of the mapping is increased, which contributes to the optimization of the intrinsic and extrinsic parameters. The experiments results show that the average root mean square error of the reprojection is reduced by nearly 50% The calibrated parameters are accurate and have physical significance in the proposed calibration scheme.", "corpus_id": 219019410, "venue": "", "year": 2020, "author_names": [ "Shuai Zhang", "Fuyu Huang", "Bingqi Liu", "Hui Zhong", "Gang Li", "Yichao Chen", "Ziang Wang" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "209501005", "title": "A 3D Deep Learning based Augmented Reality Calibration Method for Robotic Environments using Depth Sensor Data", "abstract": "Augmented Reality and mobile robots are gaining increased attention within industries due to the high potential to make processes cost and time efficient. To facilitate augmented reality, a calibration between the Augmented Reality device and the environment is necessary. This is a challenge when dealing with mobile robots due to the mobility of all entities making the environment dynamic. On this account, we propose a novel approach to calibrate Augmented Reality devices using 3D depth sensor data. We use the depth camera of a Head Mounted Augmented Reality Device, the Microsoft Hololens, for deep learning based calibration. Therefore, we modified a neural network based on the recently published VoteNet architecture which works directly on raw point cloud input observed by the Hololens. We achieve satisfying results and eliminate external tools like markers, thus enabling a more intuitive and flexible work flow for Augmented Reality integration. The results are adaptable to work with all depth cameras and are promising for further research. Furthermore, we introduce an open source 3D point cloud labeling tool, which is to our knowledge the first open source tool for labeling raw point cloud data.", "corpus_id": 209501005, "venue": "2020 IEEE International Conference on Robotics and Automation (ICRA)", "year": 2020, "author_names": [ "Linh Kastner", "Vlad Catalin Frasineanu", "Jens Lambrecht" ], "n_citations": 5, "n_key_citations": 2, "score": 0 } ]

[ { "doc_id": "210795707", "title": "Fatigue behaviors of fiber reinforced composite 3D printing", "abstract": "Abstract This chapter presents the current scientific studies on fatigue properties of continuous fiber reinforced additive manufacturing (FRAM) The conducted research studies have focused on the effect of fiber orientation and fiber volume fraction to the cyclic load life of components. Specimens were tested at load ratios of R 0 and R 0.1. The materials tested were fiberglass, carbon fiber, and Kevlar. 0 degree fiber orientation specimens showed the highest endurance. Among materials, carbon fiber reinforced specimens performed the best. One of the studies conducted analysis of variance (ANOVA) to understand the effect of different parameters. Since fiber orientation and fiber volume fraction can be adjusted for each layer, the mechanical properties are also changed. Understanding the effect of these parameters to the fatigue properties can be crucial in design of parts and failure preventing.", "corpus_id": 210795707, "venue": "", "year": 2020, "author_names": [ "Astrit Imeri", "Ismail Fidan" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "216034478", "title": "Fiber Traction Printing: A 3D Printing Method of Continuous Fiber Reinforced Metal Matrix Composite", "abstract": "A novel metal matrix composite freeform fabrication approach, fiber traction printing (FTP) is demonstrated through controlling the wetting behavior between fibers and the matrix. This process utilizes the fiber bundle to control the cross sectional shape of the liquid metal, shaping it from circular to rectangular which is more precise. The FTP process could resolve manufacturing difficulties in the complex structure of continuous fiber reinforced metal matrix composites. The printing of the first layer monofilament is discussed in detail, and the effects of the fibrous coating thickness on the mechanical properties and microstructures of the composite are also investigated in this paper. The composite material prepared by the FTP process has a tensile strength of 235.2 MPa, which is close to that of composites fabricated by conventional processes. The complex structures are printed to demonstrate the advantages and innovations of this approach. Moreover, the FTP method is suited to other material systems with good wettability, such as modified carbon fiber, surfactants, and aluminum alloys.", "corpus_id": 216034478, "venue": "", "year": 2020, "author_names": [ "Xin Wang", "Xiaoyong Tian", "Qin Lian", "Dichen Li" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "228839417", "title": "Determining process window for manufacturing of continuous carbon fiber reinforced composite Using 3D printing", "abstract": "ABSTRACT Continuous carbon fiber reinforced acrylonitrile butadiene styrene (ABS) has been manufactured by a method based on fused deposition modeling (FDM) Before 3D printing, the carbon fibers pass through an ABS acetone bath to prepare solution impregnated fibers (prepregs) Continuous fiber reinforced thermoplastic composites (CFRTCs) were printed by feeding carbon fiber prepregs and ABS filament, simultaneously into a special single port nozzle. By varying print conditions such as nozzle diameter, layer height, and print speed, composite specimens were printed with different qualities. The visual evaluation of printed composites was used to determine a process window for stable or unstable CFRTC printing. In the obtained process window, four regions were observed including fiber fuzzing or tearing instability, fiber twisting instability, low quality stable print and high quality stable print. The optimum condition to print CFRTCs was found and then specimens were printed to investigate mechanical properties under the optimal printing condition. The mechanical and morphological properties of visual optimized 3D printed composites, without any fiber fuzzing, tearing or twisting were investigated. The results showed that tensile, flexural, and interlaminar shear strength of 3D printed ABS carbon CFRTCs have increased 313% 121% and 54% respectively, when compared with the neat ABS 3D printed samples.", "corpus_id": 228839417, "venue": "", "year": 2020, "author_names": [ "Nastaran Mosleh", "Amir Masoud Rezadoust", "Soheil Dariushi" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "218818007", "title": "3D Printing Method of Spatial Curved Surface by Continuous Natural Fiber Reinforced Composite", "abstract": "", "corpus_id": 218818007, "venue": "", "year": 2020, "author_names": [ "Haiguang Zhang", "Di Liu", "Ting-Ho Huang", "Qingxi Hu", "Herfried Lammer" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "214005346", "title": "A constitutive model for 3D printed continuous fiber reinforced composite structures with variable fiber content", "abstract": "Abstract 3D printing provides a new technical means for the preparation of functionally controlled continuous fiber reinforced composites (CFRCs) with variable fiber content. The constitutive model of 3D printed CFRCs with different fiber contents are the basis for establishing mechanical analysis models and design methods of functionally regulated CFRCs based on 3D printing. In this paper, stiffness and strength properties of 3D printed CFRCs with different fiber contents were systematically studied, and the mapping relationship between material properties and fiber content was obtained. The failure processes of 3D printed CFRCs under different loads were studied by microstructural morphology and interfacial performance analysis, revealing the formation mechanisms of the material properties. The constitutive model and finite element analysis method of 3D printed CFRCs were established by using the material properties of 3D printed CFRCs with different fiber contents. The mechanical analysis mode was used to predict and analyze the performance of functionally graded CFRCs with variable fiber content. The results show that the mechanical analysis mode can be used for the optimization design and mechanical analysis of functionally controlled CFRCs.", "corpus_id": 214005346, "venue": "", "year": 2020, "author_names": [ "Zhanghao Hou", "Xiaoyong Tian", "Ziqi Zheng", "Junkang Zhang", "Lu Zhe", "Dichen Li", "Andrei V Malakhov", "Alexander N Polilov" ], "n_citations": 17, "n_key_citations": 0, "score": 0 }, { "doc_id": "221107932", "title": "3D Printing of Continuous Fiber Reinforced Low Melting Point Alloy Matrix Composites: Mechanical Properties and Microstructures", "abstract": "A novel 3D printing route to fabricate continuous fiber reinforced metal matrix composite (CFRMMC) is proposed in this paper. It is distinguished from the 3D printing process of polymer matrix composite that utilizes the pressure inside the nozzle to combine the matrix with the fiber. This process combines the metallic matrix with the continuous fiber by utilizing the wetting and wicking performances of raw materials to form the compact internal structures and proper fiber matrix interfaces. CF/Pb50Sn50 composites were printed with the Pb50Sn50 alloy wire and modified continuous carbon fiber. The mechanical properties of the composite specimens were studied, and the ultimate tensile strength reached 236.7 MPa, which was 7.1 times that of Pb50Sn50 alloy. The fracture and interfacial microstructure were investigated and analyzed. The relationships between mechanical properties and interfacial reactions were discussed. With the optimized process parameters, several composites parts were printed to demonstrate the advantages of low cost, short fabrication period and flexibility in fabrication of complex structures.", "corpus_id": 221107932, "venue": "Materials", "year": 2020, "author_names": [ "Xin Wang", "Xiaoyong Tian", "Lixian Yin", "Dichen Li" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "221478580", "title": "Effect of Process Parameters on Tensile Mechanical Properties of 3D Printing Continuous Carbon Fiber Reinforced PLA Composites", "abstract": "Three dimensional (3D) printing continuous carbon fiber reinforced polylactic acid (PLA) composites offer excellent tensile mechanical properties. The present study aimed to research the effect of process parameters on the tensile mechanical properties of 3D printing composite specimens through a series of mechanical experiments. The main printing parameters, including layer height, extrusion width, printing temperature, and printing speed are changed to manufacture specimens based on the modified fused filament fabrication 3D printer, and the tensile mechanical properties of 3D printing continuous carbon fiber reinforced PLA composites are presented. By comparing the outcomes of experiments, the results show that relative fiber content has a significant impact on mechanical properties and the ratio of carbon fibers in composites is influenced by layer height and extrusion width. The tensile mechanical properties of continuous carbon fiber reinforced composites gradually decrease with an increase of layer height and extrusion width. In addition, printing temperature and speed also affect the fiber matrix interface, i.e. tensile mechanical properties increase as the printing temperature rises, while the tensile mechanical properties decrease when the printing speed increases. Furthermore, the strengthening mechanism on the tensile mechanical properties is that external loads subjected to the components can be transferred to the carbon fibers through the fiber matrix interface. Additionally, SEM images suggest that the main weakness of continuous carbon fiber reinforced 3D printing composites exists in the fiber matrix interface, and the main failure is the pull out of the fiber caused by the interface destruction.", "corpus_id": 221478580, "venue": "Materials", "year": 2020, "author_names": [ "Hao Dou", "Yun-yong Cheng", "Wen-guang Ye", "Dinghua Zhang", "Junjie Li", "Zhoujun Miao", "Stephan Rudykh" ], "n_citations": 7, "n_key_citations": 1, "score": 0 }, { "doc_id": "198388831", "title": "Mechanical characterization of FDM 3D printing of continuous carbon fiber reinforced PLA composites", "abstract": "Abstract Additive manufacturing of fiber reinforced composites is of great interest in various industrial applications. In this study, an innovative extruder is designed and manufactured for fused deposition modeling (FDM) 3D printers in order to produce continuous fiber reinforced thermoplastic (CFRT) composites. There are some challenges along this way such as making tension in fiber, fiber surface preparation, printing temperature and feed rate to produce a composite part with good quality. These challenges are discussed in detail. The main advantage of this extruder is that it can be mounted on the available FDM 3D printers and consequently there is no need to design a new chassis. In order to assess the quality of products, standard tensile and three point bending specimens made of pure poly lactic acid (PLA) and carbon fiber reinforced PLA are printed and tested under quasi static loading. Experimental results show significant improvements of tensile and bending properties of PLA. Morphological analysis is also conducted to study the bonding between the carbon fiber and PLA.", "corpus_id": 198388831, "venue": "Composites Part B: Engineering", "year": 2019, "author_names": [ "Mohammad Heidari-Rarani", "M Rafiee-Afarani", "Alireza Zahedi" ], "n_citations": 100, "n_key_citations": 1, "score": 1 }, { "doc_id": "210799394", "title": "Ultrasound assisted 3D printing of continuous fiber reinforced thermoplastic (FRTP) composites", "abstract": "Abstract Investigation of manufacturing continuous fiber reinforced thermoplastic polymer composites (CFRTPCs) through 3D printing technologies has attracted great attention in the past few years due to excellent properties of CFRTPCs, such as high strength to weight ratio and stiffness. It is found that the properties of CFRTPCs are affected not only by the properties of the individual parent materials but also by interfacial characteristics. Modification of the interface is a great method to improve the wettability between fiber and polymer and hence the mechanical properties of CFRTPCs. In this work, an ultrasound assisted 3D printing device for CFRTPCs is developed. The changes of surface profile and chemical structure of carbon fiber and carbon fiber prepreg after ultrasonic treatment are studied. The effects of ultrasonic processing parameters on the microstructure and mechanical properties of CFRTPCs are provided. It is found that the tensile and flexural strength of composite materials are improved by 34% and 29% respectively, compared with untreated material by using the ultrasonic amplitude of 40 mm, resin solution mass fraction of 10% processing speed of 15 mm/s.", "corpus_id": 210799394, "venue": "", "year": 2019, "author_names": [ "Jing Qiao", "Yingrui Li", "Longqiu Li" ], "n_citations": 18, "n_key_citations": 0, "score": 0 }, { "doc_id": "197614397", "title": "An Overview of Research on FDM 3D Printing Process of Continuous Fiber Reinforced Composites", "abstract": "Continuous fiber reinforced composites have excellent mechanical properties, but traditional processes are costly, complex to form, have a long production cycle, and are only suitable for relatively simple structures, which limits the wider application of the material. Fuse Deposition Modeling(FDM) 3D printing has the advantages of simple process, fast molding, low cost, and the ability to manufacture high complexity structures, which provides the possibility of low cost and rapid prototyping of composite materials. In this paper, several FDM 3D printing processes for continuous fiber composites are reviewed, and the effects of some related process parameters on the properties of the composites are analyzed. Finally, the problems of FDM 3D printing continuous fiber reinforced composites are pointed out.", "corpus_id": 197614397, "venue": "Journal of Physics: Conference Series", "year": 2019, "author_names": [ "Hongyuan Zhao", "Xiao-dong Liu", "Wei Zhao", "Gongying Wang" ], "n_citations": 4, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "23913492", "title": "Research on a rail robot based remote three dimensional inspection system for switch stations in power distribution network", "abstract": "There are a large number of switch stations that are discretely distributed in the power distribution network. Traditional inspection methods cannot detect heating hazards and partial discharge inside the switchgear in time, and cannot accurately identify the operation conditions of the switchgear. It lacks effective means to manage switch station equipment. This paper designs a rail robot based remote three dimensional inspection system for switch stations. Remote automatic inspection of the switchgear and real time monitoring of the switch station environment are achieved by providing an infrared window on the switchgear and mounting a rail robot equipped with an infrared thermal imager and an ultrasonic partial discharge detector outside the switchgear. Further, video analysis technologies are used in the system to identify operation conditions of switch station equipment, which together with fault alarming, event linkage action and other functions. It is conducive to the monitoring and management of the switch station, thus improving the security and reliability of the switch stations.", "corpus_id": 23913492, "venue": "2017 Chinese Automation Congress (CAC)", "year": 2017, "author_names": [ "Tang Haiguo", "Zhu Jiran", "Gong Fangliang", "Leng Hua", "Fan Min", "Han Qi" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "204079721", "title": "System and method for detecting open state of well lid and locating well lid based on rail robot", "abstract": "The invention discloses a system and method for detecting the open state of a well lid and locating the well lid based on a rail robot. The system includes a rail robot device, an I beam rail, an RFIDgeographical tag, a mounting bracket, a wifi base station, and a data analysis platform. The rail robot device includes: a rail robot body, a RFID reader, an illumination sensor, a microprocessor, apower module, a lithium battery and a motor. The rail robot is equipped with the illumination sensor. Each well lid is provided with a RFID geographical tag. When detecting a light source with specific intensity in a running process on the rail, the robot determines a position by means of RFID and determines whether the well lid at the position is open so as to determine the position of the open well lid. The system avoids casualties caused by the theft and the damage of well lids in urban streets and has a great value to the application and promotion of various urban large and medium sized underground galleries.", "corpus_id": 204079721, "venue": "", "year": 2017, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "5060901", "title": "Design and modelling of a cable driven cart rail robot for farm automation", "abstract": "Vertical farming is an innovative method to grow crops in constrained spaces and controlled environment. Crop failure is reduced compared to traditional farming. Moreover, with automation, production of crops increases. In the proposed system, a cart rail robot is used to automate different farming tasks. Unlike a conventional system that usually uses rack and pinion or is limited to 1 Degree Of Freedom(DOF) motion, the proposed system uses a cable that actuates the entire motion of the cart providing 2 DOF motion. It works like a Cartesian robot; the motion of the cart is constrained to the XY plane and further constrained to the rail. The paper describes the mechanical design, state space modeling and analysis of the cart rail robot. The rails are laid out in columns with a single row. Vertical shelves stacked with crops are kept beside the column rails. A closed loop linear feedback controller was designed using state space representation and the gains were selected using pole placement method. A study of dynamic system response characteristics for the variation in braking distance due to change in payload was simulated. We have observed that a 1cm position accuracy is achieved. Velocity is limited to the range of 0.1 m/s to 0.2 m/s for the given payload of 25 kg.", "corpus_id": 5060901, "venue": "2017 International Conference on Intelligent Computing, Instrumentation and Control Technologies (ICICICT)", "year": 2017, "author_names": [ "Abel V David", "Harish T Mohan", "Rao R Bhavani" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "225079345", "title": "Research on automatic cleaning method for hole work piece in rail transit by intelligent robot", "abstract": "With the rapid development of rail transit in China, there is a great demand for the manufacturing capacity of intelligent equipment. Facing the demand of efficient cleaning of work piece in rail transit, this paper proposes the automatic cleaning of assembly work piece of railway vehicle by intelligent robot.Intelligent industrial robots are used to wash and deburr the work piece in the intelligent processing. The main cleaning parts are fasteners, rods and valve bodies. The main technology is clean and deburr the work piece with holes and deep holes. Binocular vision is used to identify the coarse positioning and fine positioning of the work piece with holes, and different types of work pieces are stored in memory, which is convenient for the robot to quickly clean and deburr. According to the coordinates of image processing holes, the robot can automatically optimize the path and complete the cleaning work.", "corpus_id": 225079345, "venue": "2020 5th International Conference on Automation, Control and Robotics Engineering (CACRE)", "year": 2020, "author_names": [ "Ronghua Li", "Zhidong Wang", "Jingshan Yang", "Qi Lu" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "221912961", "title": "Path planning based on the analytical inverse kinematics of the rail mounted industrial robot for continuous trajectory tracking", "abstract": "In this paper, the path planning method of a redundant robotic work cell consisting of an overhead linear rail and a FANUC 6 joint robot mounted on it is studied for the continuous trajectory tracking task. The existence of the solution of the inverse kinematics problem of the rail mounted industrial robot (RMIR) is discussed and an analytical redundancy resolution scheme for RMIR is proposed based on the workspace. The path planning method with the performance evaluation mechanism makes the end effector (EE) of robot reach the target position and posture and avoid joint limit, which makes the best of the redundant degree of freedom to improve the robot performance. The results of simulation and experiment prove that the proposed method is effective in the application of the long and closed trajectory tracking. The above research findings are integrated into the robot off line programming (OLP) software developed based on the UG platform and successfully applied to the robotic induction hardening for the chamfers of the large automobile panel dies.", "corpus_id": 221912961, "venue": "2020 12th International Conference on Intelligent Human Machine Systems and Cybernetics (IHMSC)", "year": 2020, "author_names": [ "Nanyan Shen", "Yang Wu", "Jing Li", "Ninghe Lu", "Jiajing Yao" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "229310845", "title": "Design and Application of Rail type Inspection Robot for GIS High Voltage Substation", "abstract": "In high voltage power system, with the gradual increment of SF6 gas closed end insulation composite appliance, the application of Gas insulated switchgear (GIS) becomes more and more widely accepted based on its high reliability, less maintenance, long maintenance cycle, and low failure rate (only 20% ~40% of conventional equipment) However, the GIS has its inherent shortcomings, as a result of the SF6 gas leakage, external water infiltration, the conductive impurities as well as insulator aging factors, such as internal flashover. To this end, this paper designs a rail type inspection robot for GIS substation. First, it analyzes the background of high voltage substation and GIS. Secondly, considering the distribution of GIS and the task of substation inspection, the paper gives the key components of rail type inspection robot, such as straight walking components, turning and changing track component, partial discharge (PD) detection component. Thirdly, it proposes that the architecture of rail type inspection robot system is a network distributed, which includes three parts: the background layer, communication layer and terminal layer. In addition, it discusses in detail the motion control method of inspection, especially positioning control. Then it explains the software and hardware structure of the motion control system: Radio frequency identification (RFID) is used for motion positioning of inspection robots; the background layer controls the motion of the inspection robot and uses the background software to analyze the detection data. Finally, the paper proves that the inspection robot has good balance, flexible turning, and a large inspection range. The robot can completely inspect work well instead of staff.", "corpus_id": 229310845, "venue": "2020 IEEE International Conference on High Voltage Engineering and Application (ICHVE)", "year": 2020, "author_names": [ "He-Song Liu", "Hong-yu Ni", "Dong-cheng Zhou", "Su Huang", "Wei-Ming Wei", "Wen-xu Yan" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "226578840", "title": "Rail transit assembly robot systems", "abstract": "Abstract An assembly robot is a special kind of industrial robot. It has the advantages of high assembly quality, fast response, and automatic operation. It can achieve high precision assembly, a high assembly speed, and a low total assembly cost. Therefore, assembly robots are rapidly developing in the rail transit field. This chapter introduces progress in the development of assembly robots and their key technologies and the main components of assembly robots: machinery components, sensors, controllers, and actuators. Arm dynamics is a hot topic of assembly robots. This chapter introduces mathematical models of forward and inverse dynamics, discusses various trajectory planning algorithms in joint and Cartesian space, and discusses the artificial neural network algorithm for the inverse dynamics optimization calculation of the robot arm. Finally, the chapter presents the future direction of intelligent assembly robots.", "corpus_id": 226578840, "venue": "", "year": 2020, "author_names": [ "H Liu" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "226462987", "title": "Rail transit channel robot systems", "abstract": "Abstract This chapter provides a background on rail transit equipment and the history of the development and hardware composition of the channel robot, including the ground rail, dual arm robot, infrared thermometer, laser sensor, and so on. Then, the Trouble of Moving Electric Multiple Units Detection System intelligent sensing system is described in detail, including visible image intelligent analysis, infrared thermal image temperature warning, location detection, big data analysis, and autonomous recharging. Finally, the bogie fault diagnosis algorithm based on a deep learning model is introduced, including signal acquisition, signal feature extraction based on wavelet analysis and empirical mode decomposition, and fault diagnosis model based on the convolution neural network.", "corpus_id": 226462987, "venue": "", "year": 2020, "author_names": [ "H Liu" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "114119279", "title": "A Study on the Effective Communication Protocol of the Surface Inspection Rail Robot that it can be a Self checking", "abstract": "The robots that they inspect the rail surface with running above the rail will be a means to replace the existing expensive equipments. This can be very effectively used in the process of construction and maintenance of continuous increased rail industry. Especially, it can detect the small change via the build of database for detecting the state of the rail. And it is possible the continuous management by recording this information. However, these rail robots are attached a number of different rail parts. Thus, if these components are not gonna work, it can occur problems such as stop on the rail or derailed. These issues can be occurred to other train that it runs above the rail. Therefore, it needs the method for ensuring the safety. In this paper, in order to solve these problems, we define the components and performance parts that rail robot should have it. And also, we divide into three groups of devices by analyzing the properties of each of the components. Each of the group was divided according to the calculation processing capability and communication capability. The self verification of equipments performs with fitting the framework. And they examine its own equipment validation and review whether the operation is enabled or impossible to perform in accordance with the information. In addition, the rail robot continues send the information for the rail status via wireless network with control center. Thus, we propose an efficient communication protocol in consideration of security issues that there may occur in sending process and the scalability of the function side for rail robot.", "corpus_id": 114119279, "venue": "CSA/CUTE", "year": 2016, "author_names": [ "Yun-Seok Lee", "Eun Kim", "Sung-yun Kim", "Seokhoon Kim" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "112054967", "title": "A Rail Robot Based on Micro Camera for Substation Inspection", "abstract": "According to the deficiency of mobile robot for substation,a rail robot system which is based on micro camera for substation inspection was proposed to meet the trend of intelligence and automation in substation.By laying micro,low power sensors and cameras in substation,the system is able to implement all dimensional inspection to electrical equipment in substation. The technical framework of the robot was described. Key techniques such as location,information collection of equipment,image thermometry,reading recognition for instrument,power supply system were all analyzed.", "corpus_id": 112054967, "venue": "", "year": 2015, "author_names": [ "Su Shangli" ], "n_citations": 2, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "3085430", "title": "Multinational corporation management strategies and international human resources practices: bringing IHRM to the bottom line", "abstract": "This paper examined the relationship between multinational corporations' global management strategies and the resulting international human resource practices. Four global strategies, which vary in their extent of global integration and local responsiveness, were examined (ethnocentric, regiocentric, polycentric and geocentric) Data from international human resource professionals in forty six companies generally supported the hypothesis that HR practices (recruitment, selection, socialization) varied by global strategy. In particular, strategies varied especially between the ethnocentric and geocentric companies. These strategies were further found to be related to a composite Multinational Corporation Success Index of economic variables (return on capital, sales growth, return on equity, profit margin) Companies which had ethnocentric strategies were found to be less successful than companies operating under any of the other three strategies. Findings suggested that local responsiveness should be incor.", "corpus_id": 3085430, "venue": "", "year": 1995, "author_names": [ "Paula M Caligiuri", "Linda K Stroh" ], "n_citations": 133, "n_key_citations": 7, "score": 1 }, { "doc_id": "145397776", "title": "A Cross Modal Comparison of Telephone and Face to Face Selection Interviews in Graduate Recruitment", "abstract": "Although there has been an increase in the use of telephone interviews for graduate recruitment by companies in the UK, there is little evidence attesting to their equivalence with traditional face to face selection interviews. A total of 70 candidates applying to a multinational oil corporation received both face to face and telephone interviews as the first stage of the 1996 graduate recruitment milkround. Group A (N 41) received an initial face to face interview followed by a telephone interview and group B (N 29) a telephone interview followed by a face to face interview. Findings indicate that candidates received significantly lower ratings when interviewed by telephone than when interviewed face to face (p 0.001) A significant interaction was also found (p 0.05) with candidates who received face to face interviews following telephone interviews demonstrating improved performance in their face to face interviews. The practical implications of these findings for companies wishing to use telephone interviews are discussed.", "corpus_id": 145397776, "venue": "", "year": 2000, "author_names": [ "Joanne Silvester", "Neil R Anderson", "Emma Haddleton", "Nicole Cunningham-Snell", "Andy Gibb" ], "n_citations": 46, "n_key_citations": 0, "score": 0 }, { "doc_id": "169149162", "title": "Recruitment and selection processes in Slovak enterprises and multinational corporations", "abstract": "", "corpus_id": 169149162, "venue": "", "year": 2017, "author_names": [ "Elena Delgadova", "Monika Gullerova", "Eva Ivanova" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "153947390", "title": "Strategy, structure, and HRM policy orientation: Employee recruitment and selection practices in multinational subsidiaries", "abstract": "This study investigates influence of some important features of multinational corporations' (MNCs) such as their corporate strategies, structures, and international policy orientations, on subsidiaries' human resource management (HRM) practices, and particularly on employee recruitment and selection activities. Four European multinational subsidiaries operating in Bangladesh were selected for the study. In depth case studies revealed that the subsidiaries' recruitment and selection practices were guided by the changing nature of corporate structures, production strategies, and headquarters' international HRM policy orientations. The study also shows that the development of employee recruitment and selection practices by subsidiaries is not solely dependent on their parent companies. The roles and capabilities of subsidiaries also influence subsidiary headquarters relationships, and consequently, the development of different employee recruitment and selection practices at the subsidiary level.", "corpus_id": 153947390, "venue": "", "year": 2015, "author_names": [ "Monowar Mahmood" ], "n_citations": 11, "n_key_citations": 0, "score": 1 }, { "doc_id": "167432778", "title": "Multinational Corporations' Recruitment and Selection", "abstract": "Personnel recruitment and selection is the basic work in human resource management, and the main channel of employing people for enterprises. In the process of the economic globalization, Chinese enterprises, when faced with the global competition for talented people, can draw upon new experiences from the new characteristics, concepts and the practices of multinational corporations. As for Chinese enterprises, they have many weakness at work, which lead to their failure in the competition for talents.", "corpus_id": 167432778, "venue": "", "year": 2004, "author_names": [ "Jin Yi" ], "n_citations": 0, "n_key_citations": 0, "score": 3 }, { "doc_id": "110182976", "title": "Virtual interviews: a futuristic approach to recruitment, assessment, screening and selection processes in IT organisations", "abstract": "Several reports from both sides of the Atlantic agree that shortage of IT skills is a common phenomenon nowadays and one of the main factors in losing business opportunities. Large multinational organisations such as IBM and Microsoft are forced to overcome this obstacle either by outsourcing in remote countries or by introducing virtual teams of IT professionals that are geographically dispersed. Quite a few US corporations even prefer to arrange for the immigration of successful job candidates. In all three cases the main concern is how to contact the entire recruitment process. Distance and time differences are two essential issues that need to be addressed in order to assess, screen and select the most promising candidates. According to research done by the US Employment Service and the US Office of Personnel Management, an enormous amount of personnel expense can be saved by using valid pre employment methods. Costs for contacting traditional face to face interviews may include travel and accommodation expenses for all candidates and time spent by both the Human Resources interview panel. Alternatively quite a few available technologies have emerged to contact various types of tests remotely. Interviews by teleconference, customised interactive telephone qualifying services, Internet based assessment tests, and web sites with customised questionnaires are some examples. This paper introduces virtual interviewing as a different approach in saving time, effort and costs while recruiting remotely. The underlying concept is designing and implementing interviews in an on line environment, such as the Internet. Main challenges include understanding the basic principles followed by face to face interviews, identifying the transition of traditional interviews to online environment, provide the means to IT managers to select the content and structure of the online interview, design a methodology for customising the path between the interview questions with respect to different candidates and according to the answers of each question, and finally design and implement a prototype for contacting online interviews synchronously or asynchronously using agent technology. In the various sections of the paper most of these challenges are further discussed and an initial effort for a prototype web system is described.", "corpus_id": 110182976, "venue": "", "year": 2001, "author_names": [ "George E Dafoulas" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "226551747", "title": "A CRITICAL REVIEW OF THE LITERATURE ON EXPATRIATES SUCCESS FAILURE DURING AN INTERNATIONAL ASSIGNMENT", "abstract": "Expatriates share similar causes of failure and success during an international assignment and they are still facing a range issues while moving overseas. Expatriate success rate is higher than expatriate failure but there is still unexpected gap between expatriate failure and success. Organizational support, training and sound recruitment and selection are top reasons behind expatriate success while inability to adjust, lack of firm\"s assistance and lack of training and development programs are few causes of expatriate employees breakdown in an global assignment. Above all, Multinational corporations don\"t have a common strategy to ensure expatriate success and they are still investing to figure out a well accepted approach. In addition, there is a lot of development in the field of expatriation and it is in trend despite of pitfalls during operation in overseas. The purpose this study is to review most relevant studies on expatriate success and failure to find out the reasons behind expatriate premature return or failure and success during an international assignment.", "corpus_id": 226551747, "venue": "", "year": 2020, "author_names": [ "Bahrullah Safi", "Parul Saxena" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "155044826", "title": "Hybridization: striking a balance between adoption and adaptation of human resource management practices in French multinational corporations and their Tunisian subsidiaries", "abstract": "International management research has tended to approach the transfer of human resource management (HRM) practices by examining the one way transfer from parent companies to their subsidiaries, their adaptation to the subsidiaries' local context and, more recently, the reverse transfer of HRM practices from subsidiaries to their headquarters. This article aims to analyse the transfer of HRM practices from headquarters to their foreign subsidiaries through the process of hybridization. Although numerous studies focus on the transfer of HRM practices between economically developed countries or from these countries to transitional economies, few have considered French multinational corporations (MNCs) operating in ex colonized countries. This paper addresses the ways in which the HRM hybridization process is implemented in two French subsidiaries operating in Tunisia. It focuses on the dual perspectives of managerial staff at headquarters and subsidiaries as well as shop floor employees in the subsidiaries. A range of HRM practices (recruitment and selection, compensation, performance appraisal and career management) is analysed from their transfer to their reinterpretation. The results show the importance of the concept of hybridization on HRM practice transfer through a multi level analysis of the strategies used by various stakeholders during the hybridization process. The paper also provides useful insights into the factors of hybridization that may foster or inhibit the transfer and adoption of HRM practices by foreign subsidiaries. These include the relational context, the type of practices transferred, the interests of different professional categories and their social interactions. Based on these factors, several hybridizations are identified. The study points out the specificity of the Tunisian context and shows that institutional factors have less influence on the transfer of HRM practices in ex colonized countries than cultural factors that have a transversal influence on different HRM practices. Key cultural factors constraining the transfer include emotional relationships and interpersonal trust. Moreover, the international transfer of HRM practices from MNCs to ex colonized transitional countries requires taking into account the post colonialism and fascination effects.", "corpus_id": 155044826, "venue": "", "year": 2015, "author_names": [ "Dorra Yahiaoui" ], "n_citations": 31, "n_key_citations": 4, "score": 0 }, { "doc_id": "210144198", "title": "INTERNATIONAL HUMAN RESOURCE MANAGEMENT FOR EXPATRIATION IN EARLY AND LATE MOVER MULTINATIONALS GESTAO INTERNACIONAL DE RECURSOS HUMANOS PARA EXPATRIACAO EM MULTINACIONAIS EARLY E LATE MOVERS", "abstract": "1 The rise of multinational corporations in emerging economies led to an interest in understanding human resource management in multinationals with subsidiaries. Our research aims to analyze the international human resource management practices used for the expatriation of professionals in early and late mover multinationals located in Brazil. This research has a qualitative approach with multiple case studies, and it is both exploratory and descriptive. We perform interviews, document analyses, and observation. The results show similarities between both analyzed groups, except in the recruitment and selection, career development, and work relations practices. We conclude that both in the early and late mover multinationals there are no repatriation programs focused on career development, and specific process to assess the expatriates' performance.", "corpus_id": 210144198, "venue": "", "year": 2019, "author_names": [ "Alessandra Costenaro Maciel", "Giana de Vargas Mores", "Keyso DE Miranda Kubo" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "213514554", "title": "INTERNATIONAL HUMAN RESOURCE MANAGEMENT FOR EXPATRIATION IN EARLY AND LATE MOVER MULTINATIONALS", "abstract": "The rise of multinational corporations in emerging economies led to an interest in understanding human resource management in multinationals with subsidiaries. Our research aims to analyze the IHRM practices used for the expatriation of professionals in early and late mover multinationals located in Brazil. This research has a qualitative approach with multiple case studies, and it is both exploratory and descriptive. We perform interviews, document analyses, and observation. The results show similarities between both analyzed groups, except in the recruitment and selection, career development, and work relations practices. We conclude that both in the early and late mover multinationals there are no repatriation programs focused on career development, and a specific process to assess the expatriates' performance.", "corpus_id": 213514554, "venue": "", "year": 2019, "author_names": [ "Alessandra Costenaro Maciel", "Giana de Vargas Mores", "Eduardo de Camargo Oliva", "Edson Keyso de Miranda Kubo" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "17222068", "title": "Taking the load off: investigations of how adaptive cruise control affects mental workload", "abstract": "It has been posited that Adaptive Cruise Control (ACC) represents a new generation of vehicle automation, in that it has the potential to relieve drivers of mental as well as physical workload. The results of previous research however, have raised some confusing issues about the specific effects of Adaptive Cruise Control (ACC) on driver mental workload (MWL) some studies report reduced MWL compared to manual driving, while others find no effect. Two hypotheses are proposed in an attempt to explain these discrepancies: (a) that any potential MWL reductions due to ACC could be masked by the overriding influence of steering demand; or (b) that the tasks designed in some experiments do not exploit the adaptive nature of the ACC system, therefore precluding any potential benefits. Two related experiments were designed to test these hypotheses. It was found that the main reason for the discrepant findings was the nature of the driving task chosen constant speed tasks do not realise the mental workload benefits of ACC. Future researchers using ACC devices are advised to use variable speed tasks to ensure that all aspects of device functionality are covered.", "corpus_id": 17222068, "venue": "Ergonomics", "year": 2004, "author_names": [ "Mark S Young", "Neville A Stanton" ], "n_citations": 91, "n_key_citations": 5, "score": 1 }, { "doc_id": "24004224", "title": "Influence of Task Combination on EEG Spectrum Modulation for Driver Workload Estimation", "abstract": "Objective: This study investigates the feasibility of using a method based on electroencephalography (EEG) for deriving a driver's mental workload index. Background: The psychophysiological signals provide sensitive information for human functional states assessment in both laboratory and real world settings and for building a new communication channel between driver and vehicle that allows for driver workload monitoring. Methods: An experiment combining a lane change task and n back task was conducted. The task load levels were manipulated in two dimensions, driving task load and working memory load, with each containing three task load conditions. Results: The frontal theta activity showed significant increases in the working memory load dimension, but differences were not found with the driving task load dimension. However, significant decreases in parietal alpha activity were found when the task load was increased in both dimensions. Task related differences were also found. The driving task load contributed more to the changes in alpha power, whereas the working memory load contributed more to the changes in theta power. Additionally, these two task load dimensions caused significant interactive effects on both theta and alpha power. Conclusion: These results indicate that EEG technology can provide sensitive information for driver workload detection even if the sensitivities of different EEG parameters tend to be task dependent. Application: One potential future application of this study is to establish a general driver workload estimator that uses EEG signals.", "corpus_id": 24004224, "venue": "Hum. Factors", "year": 2011, "author_names": [ "Shengguang Lei", "Matthias Rotting" ], "n_citations": 84, "n_key_citations": 6, "score": 1 }, { "doc_id": "54095430", "title": "Measuring mental workload using physiological measures: A systematic review.", "abstract": "Technological advances have led to physiological measurement being increasingly used to measure and predict operator states. Mental workload (MWL) in particular has been characterised using a variety of physiological sensor data. This systematic review contributes a synthesis of the literature summarising key findings to assist practitioners to select measures for use in evaluation of MWL. We also describe limitations of the methods to assist selection when being deployed in applied or laboratory settings. We detail fifty eight peer reviewed journal articles which present original data using physiological measures to include electrocardiographic, respiratory, dermal, blood pressure and ocular. Electroencephalographic measures have been included if they are presented with another measure to constrain scope. The literature reviewed covers a range of applied and experimental studies across various domains, safety critical applications being highly represented in the sample of applied literature reviewed. We present a summary of the six measures and provide an evidence base which includes how to deploy each measure, and characteristics that can affect or preclude the use of a measure in research. Measures can be used to discriminate differences in MWL caused by task type, task load, and in some cases task difficulty. Varying ranges of sensitivity to sudden or gradual changes in taskload are also evident across the six measures. We conclude that there is no single measure that clearly discriminates mental workload but there is a growing empirical basis with which to inform both science and practice.", "corpus_id": 54095430, "venue": "Applied ergonomics", "year": 2019, "author_names": [ "Rebecca Charles", "Jim Nixon" ], "n_citations": 120, "n_key_citations": 3, "score": 1 }, { "doc_id": "206986648", "title": "Visual Longitudinal and Lateral Driving Assistance in the Head Up Display of Cars", "abstract": "Most car accidents occur due to longitudinal collisions or lane departure. We assume that the number of such accidents can be reduced, if the driver knows more precisely, where the car is heading and at which distance it can stop. To provide drivers with this kind of anticipation, we have developed two augmented reality based visualization schemes for longitudinal and lateral driver assistance in the head up display (HUD) of cars. One presentation scheme indicates the braking distance by a virtual bar on the road. The second scheme adds the visualization of a drive path between the car and the bar, zoning the entire region that the car will pass before coming to a complete halt. We have tested both schemes in a driving simulator in comparison to a baseline without visual assistance. Our results show, among other findings, that the bar is preferred, that it supports driving performance and that it does not increase mental workload.", "corpus_id": 206986648, "venue": "2007 6th IEEE and ACM International Symposium on Mixed and Augmented Reality", "year": 2007, "author_names": [ "Marcus Tonnis", "Christian Lange", "Gudrun Johanna Klinker" ], "n_citations": 79, "n_key_citations": 6, "score": 0 }, { "doc_id": "205172458", "title": "Merging into heavy motorway traffic by young and elderly drivers.", "abstract": "An increase in the number of Heavy Goods Vehicles on motorways may lead to additional problems in the interaction with an increased number of elderly drivers. Elderly drivers suffer from reduced information processing speed and capacity, and in general effectively compensate for this by taking more time. However, this strategy, regulating task demands by slowing down will make merging into motorway traffic actually more difficult. In an experiment performed in a driving simulator, young and elderly drivers merged into motorway traffic. Driver behaviour and mental workload were studied while the following factors were manipulated: type of traffic and density of Heavy Goods Vehicles on the main road, the length of the acceleration lane, presence of a slowly driving lead car, and presence of a driver support system that encouraged the drivers to speed up if their speed was too low. Results show that the effects of an increased number of Heavy Goods Vehicles on the main road were not more adverse for elderly than for the young participants, with the exception that elderly drivers merged at a lower speed. This lower speed could make the manoeuvre more risky in real traffic. The support system and an extended acceleration lane facilitated merging, while a slowly driving lead car impeded completion of the manoeuvre.", "corpus_id": 205172458, "venue": "Accident; analysis and prevention", "year": 2009, "author_names": [ "D de Waard", "Chris Dijksterhuis", "Karel A Brookhuis" ], "n_citations": 75, "n_key_citations": 1, "score": 0 }, { "doc_id": "12011885", "title": "Preparing drivers for dangerous situations: A critical reflection on continuous shared control", "abstract": "Shared control (also known as continuous haptic guidance or haptically active controls) has recently been introduced in car driving. With shared control, the driver receives continuous force feedback on the gas pedal or steering wheel, so that human and machine conduct the driving task simultaneously. Experiments in driving simulators have shown that shared control reduces control variability and mental workload, and improves accuracy in path tracking and car following. Crucial to road safety, however, is not whether shared control improves performance in routine driving tasks, but what happens in dangerous situations when a conflict of authority occurs, or when the force feedback cannot be relied upon or is suddenly disengaged. Drawing on research into transfer of training, it is shown that shared control may induce aftereffects and may hamper retention of robust driving skills. Supplementary information should not be provided continuously, but on an as needed basis, warning or assisting drivers only when deviations from acceptable tolerance limits arise.", "corpus_id": 12011885, "venue": "2011 IEEE International Conference on Systems, Man, and Cybernetics", "year": 2011, "author_names": [ "Joost de Winter", "Dimitra Dodou" ], "n_citations": 68, "n_key_citations": 5, "score": 0 }, { "doc_id": "10820506", "title": "Examining the effects of an eco driving message on driver distraction.", "abstract": "This paper examines the effects of an eco driving message on driver distraction. Two in vehicle distracter tasks were compared with an eco driving task and a baseline task in an advanced driving simulator. N=22 subjects were asked to perform an eco driving, CD changing, and a navigation task while engaged in critical manoeuvres during which they were expected to respond to a peripheral detection task (PDT) with total duration of 3.5h. The study involved two sessions over two consecutive days. The results show that drivers' mental workloads are significantly higher during navigation and CD changing tasks in comparison to the two other scenarios. However, eco driving mental workload is still marginally significant (p~.05) across different manoeuvres. Similarly, event detection tasks show that drivers miss significantly more events in the navigation and CD changing scenarios in comparison to both the baseline and eco driving scenario. Analysis of the practice effect shows that drivers' baseline scenario and navigation scenario exhibit significantly less demand on the second day. Drivers also can detect significantly more events on the second day for all scenarios. The authors conclude that even reading a simple message while driving could potentially lead to missing an important event, especially when executing critical manoeuvres. However, there is some evidence of a practice effect which suggests that future research should focus on performance with habitual rather than novel tasks. It is recommended that sending text as an eco driving message analogous to the study circumstances should not be delivered to drivers on line when vehicle is in motion.", "corpus_id": 10820506, "venue": "Accident; analysis and prevention", "year": 2013, "author_names": [ "Hossein Rouzikhah", "Mark J King", "Andry Rakotonirainy" ], "n_citations": 49, "n_key_citations": 1, "score": 0 }, { "doc_id": "44746788", "title": "Prefrontal Cortex Activation and Young Driver Behaviour: A fNIRS Study", "abstract": "Road traffic accidents consistently show a significant over representation for young, novice and particularly male drivers. This research examines the prefrontal cortex activation of young drivers and the changes in activation associated with manipulations of mental workload and inhibitory control. It also considers the explanation that a lack of prefrontal cortex maturation is a contributing factor to the higher accident risk in this young driver population. The prefrontal cortex is associated with a number of factors including mental workload and inhibitory control, both of which are also related to road traffic accidents. This experiment used functional near infrared spectroscopy to measure prefrontal cortex activity during five simulated driving tasks: one following task and four overtaking tasks at varying traffic densities which aimed to dissociate workload and inhibitory control. Age, experience and gender were controlled for throughout the experiment. The results showed that younger drivers had reduced prefrontal cortex activity compared to older drivers. When both mental workload and inhibitory control increased prefrontal cortex activity also increased, however when inhibitory control alone increased there were no changes in activity. Along with an increase in activity during overtaking manoeuvres, these results suggest that prefrontal cortex activation is more indicative of workload in the current task. There were no differences in the number of overtakes completed by younger and older drivers but males overtook significantly more than females. We conclude that prefrontal cortex activity is associated with the mental workload required for overtaking. We additionally suggest that the reduced activation in younger drivers may be related to a lack of prefrontal maturation which could contribute to the increased crash risk seen in this population.", "corpus_id": 44746788, "venue": "PloS one", "year": 2016, "author_names": [ "Hannah J Foy", "Patrick Runham", "Peter Chapman" ], "n_citations": 49, "n_key_citations": 1, "score": 0 }, { "doc_id": "9465779", "title": "The Effect of Prior Task Loading on Mental Workload", "abstract": "Objective: This study examined how transitions in task demand during a driving and navigation task manifested themselves as delayed adaptation in driver mental workload. Background: A delayed reaction to changes in demand levels, termed hysteresis, has been identified in a number of settings. However, little research has specifically examined the driving task for hysteresis effects. Method: A total of 32 drivers completed drives while using a navigation system that would fail within the drive. Subjective mental workload was recorded prior to and following system failure as well as at the conclusion of the drive. Results: Results indicated that a gradual reduction in overall mental workload across trials and a lagged recovery to reduction in task demand was present within trials. Analysis of the mental workload subscales within trials indicated that this effect was produced by the mental effort component of workload. Conclusion: A moderate hysteresis effect is present in mental workload transitions within the driving task. Although subjective mental workload decreases across trials, the magnitude of the lagged recovery within trials remains unchanged. Application: Scaling of in vehicle information is beneficial with respect to driver mental workload. Display and communication technologies designers should consider not only the immediate task demand but also the driver's task demand history when determining what and how to provide information.", "corpus_id": 9465779, "venue": "Hum. Factors", "year": 2011, "author_names": [ "Justin F Morgan", "Peter A Hancock" ], "n_citations": 40, "n_key_citations": 6, "score": 0 }, { "doc_id": "14181471", "title": "From driving simulation to virtual reality", "abstract": "Driving simulation from the very beginning of the advent of VR technology uses the very same technology for visualization and similar technology for head movement tracking and high end 3D vision. They also share the same or similar difficulties in rendering movements of the observer in the virtual environments. The visual vestibular conflict, due to the discrepancies perceived by the human visual and vestibular systems, induce the so called simulation sickness, when driving or displacing using a control device (ex. Joystick) Another cause for simulation sickness is the transport delay, the delay between the action and the corresponding rendering cues. Another similarity between driving simulation and VR is need for correct scale 1:1 perception. Correct perception of speed and acceleration in driving simulation is crucial for automotive experiments for Advances Driver Aid System (ADAS) as vehicle behavior has to be simulated correctly and anywhere where the correct mental workload is an issue as real immersion and driver attention is depending on it. Correct perception of distances and object size is crucial using HMDs or CAVEs, especially as their use is frequently involving digital mockup validation for design, architecture or interior and exterior lighting. Today, the advents of high resolution 4K digital display technology allows near eye resolution stereoscopic 3D walls and integrate them in high performance CAVEs. High performance CAVEs now can be used for vehicle ergonomics, styling, interior lighting and perceived quality. The first CAVE in France, built in 2001 at Arts et Metiers ParisTech, is a 4 sided CAVE with a modifiable geometry with now traditional display technology. The latest one is Renault's 70M 3D pixel 5 sides CAVE with 4K x 4K walls and floor and with a cluster of 20 PCs. Another equipment recently designed at Renault is the motion based CARDS driving simulator with CAVE like 4 sides display system providing full 3D immersion for the driver. The separation between driving simulation and digital mockup design review is now fading though different uses will require different simulation configurations. New application domains, such as automotive AR design, will bring combined features of VR and driving simulation technics, including CAVE like display system equipped driving simulators.", "corpus_id": 14181471, "venue": "VRIC", "year": 2014, "author_names": [ "Andras Kemeny" ], "n_citations": 38, "n_key_citations": 3, "score": 0 } ]

[ { "doc_id": "5966087", "title": "Dental root elevator embedded into a subgingival caries: a case report", "abstract": "BackgroundBreakage of surgical instruments is a rare complication. A mistake in operator technique or sub standard/aged tools could lead to this type of accident. A tooth elevator is an instrument used in minor oral surgical procedures to luxate the tooth or fractured root from its socket. The authors have not found any previously published cases reporting the breakage of a tooth elevator tip which then remained as a foreign body in a hidden caries cavity.Case presentationA 28 year old African black male was referred to a hospital in Tanzania for an intraoral radiography. The patient explained that six months previously his mandibular left third molar had been extracted. Whilst the healing process had been satisfactory, he had recently experienced acute oral pain in this region. The dental X ray showed an image consistent with a piece of broken metal embedded in a distal subgingival caries at the mandibular left second molar.ConclusionOral and dental surgeons should take particular care when employing metal instruments with strong force in poorly visible areas. A radiographic study should be carried out when instrument breakage occurs. If an unexpected accident takes place during a surgical procedure, the patient must be informed in accordance with ethical codes, and suitable measures adopted to resolve the issue.", "corpus_id": 5966087, "venue": "BMC Research Notes", "year": 2015, "author_names": [ "Jaume Miranda-Rius", "Lluis Brunet-Llobet", "Eduard Lahor-Soler", "Ombeni Mrina", "Albert Ramirez-Ramiz" ], "n_citations": 5, "n_key_citations": 0, "score": 1 }, { "doc_id": "27164972", "title": "Dental management of patient with Williams Syndrome A case report", "abstract": "Williams syndrome is a multisystemic rare genetic disorder caused by deletion of 26 28 genes in the long arm of chromosome 7. It is characterized by developmental and physical abnormalities including congenital cardiovascular abnormalities, mental retardation, neurological features, growth deficiency, genitourinary manifestations, gastrointestinal problems, musculoskeletal problems, unique behavioral characteristics, and dental problems. Dental abnormalities include malocclusion, hypodontia, malformed teeth, taurodontism, pulp stones, increased space between teeth, enamel hypoplasia, and high prevalence of dental caries. Authors report a 17 year old female patient with underlying Williams syndrome. Oral features and problems seen in the patient are listed. Malocclusion and screwdriver shaped teeth were noticed. Generalized widening of the periodontal ligament space with vital teeth was seen. This finding has not been reported in cases of Williams syndrome earlier. Precautions taken during dental treatment in patients with Williams syndrome are also discussed.", "corpus_id": 27164972, "venue": "Contemporary clinical dentistry", "year": 2015, "author_names": [ "D Wong", "Srinivas Sulugodu Ramachandra", "Ashish Kumar Singh" ], "n_citations": 10, "n_key_citations": 0, "score": 1 }, { "doc_id": "58094391", "title": "DENTAL TREATMENT IN A PRADER WILLI SYNDROME PATIENT A CASE REPORT", "abstract": "Prader will syndrome (PWS) is a genetic disorder displayed with short stature and behavioral problems. The major manifestation is hyperphagia and obesity but there is no known effective drug that can solve this problem. This article presents a case report of a 3 year 9 month old girl affected with PWS syndrome treated under general anesthesia due to lack of cooperation and multiple caries. The dentist should work as a member of the multidisciplinary medical team. Careful long term follow up is required to prevent dental caries and periodontal diseases as well as maintain good oral hygiene. A strict diet control should also be encouraged. [J Korean Dis Oral Health Vol.11, No.2: 67 71, December 2015]", "corpus_id": 58094391, "venue": "", "year": 2015, "author_names": [ "Soo Jeong Lee", "Kwangwoo Baek" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "5548178", "title": "Detection of dental caries lesion at early stage based on image analysis technique", "abstract": "Dental caries is a bacterial disease of teeth caused by acid, carbohydrates and it destroys the enamel and dentine. This also causes dental pain. As per World Health Organization report, worldwide 60 90% children and 100% adult have dental caries [1] In near future it will be an epidemic. Unfortunately there is no highly sensitive technology for early caries detection. Besides that, no single method will allow detection of caries on all types of the tooth surfaces like enamel, dentin region etc. Hence periodic monitoring and treatment is essential for preventing the growth of the caries. It is difficult for doctor to monitor the progress of each dental caries lesion. That case, x ray images are helpful, but it is injurious to health. Hence optical image based caries monitoring system is advantageous for doctor to monitor the size of the caries. This method is not injurious to health. The proposed method describes a technique where optical images of teeth are filtered and caries lesions are extracted followed by tooth region segmentation. This system is able to segment each tooth, caries lesion and monitor the growth of lesion size. The main goal of this research work is to find the exact caries lesion of affected teeth which helps dentist for better follow up and diagnosis.", "corpus_id": 5548178, "venue": "2015 IEEE International Conference on Computer Graphics, Vision and Information Security (CGVIS)", "year": 2015, "author_names": [ "Soma Datta", "Nabendu Chaki" ], "n_citations": 17, "n_key_citations": 4, "score": 0 }, { "doc_id": "14491367", "title": "Vital Pulp Therapy of a Mature Molar with Concurrent Hyperplastic Pulpitis, Internal Root Resorption and Periradicular Periodontitis: A Case Report", "abstract": "Vital pulp therapy (VPT) of permanent mature teeth is continuously ascertaining to be a more reliable endodontic treatment. The purpose of this case report was to describe successful VPT of a mature mandibular left first molar with concurrent hyperplastic pulpitis, internal root resorption and periradicular periodontitis in a 35 year old male patient. After complete caries removal and access cavity preparation, the dental pulp was removed from the coronal third of the roots. To protect the remaining pulp, calcium enriched mixture (CEM) cement was placed and adapted into the cavities; the tooth was then restored with amalgam. Six months after VPT, radiographic examination showed evidence of periradicular healing. Clinically, the tooth was functional without signs and symptoms of infection/inflammation. The successful outcome of this case suggests that diseased dental pulp (i.e. irreversible pulpitis) has the potential to heal after pulp protection with CEM biocement.", "corpus_id": 14491367, "venue": "Iranian endodontic journal", "year": 2015, "author_names": [ "Saeed Asgary", "Mehmet Kemal Caliskan" ], "n_citations": 13, "n_key_citations": 0, "score": 1 }, { "doc_id": "24116628", "title": "Case report: A medieval case of molar incisor hypomineralisation", "abstract": "Introduction Molar incisor hypomineralisation (MIH) has been identified in recent years as a condition affecting the first permanent molars and, in some cases, the permanent incisors. Many factors have been suggested as to its aetiology. Examples of MIH have also been reported in skeletal remains in the past. These historical examples have, however, been for unknown individuals.Case report A skull that has become available for dental examination that is uncertainly attributed to be that of Lady Eleanor Talbot (c.1436 1468) who ended her life as a Carmelite nun in Norwich (England) The dental findings of the examination showed enamel defects of molar teeth 36 and 46, as well as small areas on other molars, and striations of the enamel of permanent anterior teeth consistent with MIH. There is exposure of the roots of some maxillary teeth with resultant root caries. The presence of areas of enamel decalcification commensurate with 'Turner teeth' on 43 and 44 indicates that there were likely to have been periapical abscesses secondary to dental caries of the primary teeth. In addition, there is occlusal wear of all of teeth with extensive calculus and periodontal exposure of the roots of the mandibular incisors. Failed development or very early ante mortem loss of premolars 15 and 25 is evident, as well as evidence in the same region of a large abscess cavity with extensive maxillary bone destruction. Healing cribra orbitalia, porosity, which is considered to be an indicator of nutritional stress, is visible on the superior aspect of the left orbit.Conclusion A case of MIH is reported in a skull dating from the mid 15th century.", "corpus_id": 24116628, "venue": "BDJ", "year": 2015, "author_names": [ "M E J Curzon", "A R Ogden", "Michelle L Williams-Ward", "P Cleaton-jones" ], "n_citations": 9, "n_key_citations": 0, "score": 0 }, { "doc_id": "5250210", "title": "Freeman Sheldon syndrome: a case report.", "abstract": "BACKGROUND Freeman Sheldon syndrome is a rare hereditary disorder characterised by three basic abnormalities, namely microstomia, camptodactyly with ulnar deviation of the fingers, and clubfoot. The majority of these patients have microstomia and dental crowding, making oral hygiene difficult and increasing the risk of caries. Treatment of these patients requires a coordinated effort by a team of specialists, including a paediatrician, an anaesthesiologist, a plastic surgeon, a paediatric dentist, and an orthodontist. Herein, we describe dental problems of a child with Freeman Sheldon syndrome and the treatment procedures performed.", "corpus_id": 5250210, "venue": "European journal of paediatric dentistry", "year": 2015, "author_names": [ "Mina Biria", "Bahareh Nazemi", "Forough Akbari", "Afsaneh Rahmati" ], "n_citations": 10, "n_key_citations": 0, "score": 0 }, { "doc_id": "6612049", "title": "Blaschko Linear Enamel Defects A Marker for Focal Dermal Hypoplasia: Case Report of Focal Dermal Hypoplasia", "abstract": "Focal dermal hypoplasia (FDH) is a rare genetic skin disorder. The inheritance of FDH or Goltz Gorlin syndrome is X linked dominant and the disease is associated with a PORCN gene mutation. This gene plays a key role in the Wnt pathway, which has an impact on embryonic development. Every tissue derived from meso and ectoderm can be affected. Patients suffer from cutaneous, ocular, osseous, oral and dental defects. The skin and dental alterations manifest along the Blaschko lines. We present a woman (born in 1962) suffering from FDH with congenital skin changes and Blaschko linear enamel defects. Typical symptoms (e.g. fat herniations, scoliosis, syndactyly, microphthalmia, caries and alopecia) plus vertical grooving of all teeth gave a first indication. Molecular genetic testing confirmed the definitive diagnosis of FDH. We hypothesize that, in the context of typical skin changes, visible Blaschko lines on the teeth in the form of vertical grooves are almost pathognomonic for FDH.", "corpus_id": 6612049, "venue": "Case Reports in Dermatology", "year": 2015, "author_names": [ "Stefan Gysin", "Peter H Itin" ], "n_citations": 4, "n_key_citations": 1, "score": 0 }, { "doc_id": "44346638", "title": "Bilateral Fusion of Primary Mandibular Incisors: A Rare Case Report.", "abstract": "A 32 month old boy accompanied by his parents reported with chief complaint of decayed teeth. The patient did not have any systemic disorder and his medical history was noncontributory. There was no family history of dental anomaly and no consanguinity was reported in the parents. On examining the patient intraorally, bilateral presence of unusually large teeth in the mandibular incisor region was seen. Both side lateral and central incisor were fused to form large tooth [Table/Fig 1] [Table/Fig 1] Intraoral view of fused bilateral mandibular central and lateral incisors These bulbous teeth were not affected by dental caries and periodontal problems. Radiographic evaluation of the left and the right sides revealed two distinct roots and root canals and were evident of the fused 71,72 and 81,82 [Table/Fig 2] The underlying permanent successor tooth were also evident in both the intraoral and periapical and panoramic radiographs [Table/Fig 3] So, a diagnosis of bilaterally fused mandibular primary central and lateral incisors was made. Now patient is on follow up. [Table/Fig 2] IOPA showing bilateral fused mandibular central and lateral incisors [Table/Fig 3] OPG showing bilaterally fused mandibular incisors and presence of permanent tooth germ The developmental anomaly of union of two deciduous or permanent teeth is called as fusion. There are certain problems associated with fusion namely aesthetic problems, space problems, occlusal disturbances and delayed eruption of permanent teeth. Therefore careful monitoring of the case is required. This case report highlights a rare case of bilateral fusion of primary mandibular incisors in a 32 month old boy. In the primary dentition various anomalies of number and form may occur [1] One of such anomaly is fusion which is identified as union of two distinct dental organs. In fusion the number of teeth in the dental arch is reduced. This anomaly is different from gemination because in gemination single tooth germ divides into two. The causes of fusion is still unknown but possible cause can be due to the pressure or physical forces, close contact between two developing teeth occurs [1] Other contributing factors include genetic predisposition and racial differences. Fused teeth may also present in some syndromes like chondroectodermal dysplasia or achondrodysplasia. In primary teeth, the incidence of bilateral fusion is 0.01 0.04% [2] In fused teeth, the clinical crown appears as a crown which is double the size of normal crown. On radiographic examination, fused teeth can show separate pulp chambers and root canals or a single common pulp chamber and root canal system. Fused teeth can predispose to caries due to presence of deep fissures and can also lead to periodontal, aesthetic and spacing problems [3] Fusion occurs when some physical force or pressure brings contact of the two normally separated tooth germs. It occurs during developmental stage of the teeth. When the contact occurs before calcification stage, a single large tooth is produced. When the contact and union of the teeth occurs after the formation of the crown, the incomplete fusion at the root level is formed. Several problems occurred in permanent dentition follow fused primary teeth such as repeated double teeth, hypodontia (missing teeth) supernumerary teeth and peg shaped teeth [1] Also, double primary teeth may cause delayed resorption of the root because of the big root mass, resulting in delayed or ectopic eruption of permanent teeth [4] Fused primary teeth are highly correlated with the absence of permanent teeth and the prevalence depends on the combination of fused primary teeth [5]", "corpus_id": 44346638, "venue": "Journal of clinical and diagnostic research JCDR", "year": 2015, "author_names": [ "Teena Gupta", "Naveen Manuja" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "27946052", "title": "Strip Crowns Technique for Restoration of Primary Anterior Teeth: Case Report", "abstract": "Dental caries is the single most common chronic childhood disease affecting worldwide. In early childhood caries, there is early pulp involvement and gross destruction of maxillary anterior teeth as well as posterior teeth. Treatment of such caries represents a challenge to pediatric dentists especially, when teeth are badly destroyed. By the time the dentist sees the child, most of the coronal structure is lost. This case report describes challenging task of a Case of early childhood caries patients with mutilated maxillary incisors restored with a strip form composite restorations. Keywords: Early childhood caries, Resin composite, Strip crowns", "corpus_id": 27946052, "venue": "", "year": 2015, "author_names": [ "Abu-Hussein Muhamad", "Abdulgani Azzaldeen", "Abdulgani Mai" ], "n_citations": 4, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "220495070", "title": "Imperialism and the Politics of Childhood Innocence in Peter Pan and Wendy", "abstract": "", "corpus_id": 220495070, "venue": "", "year": 2020, "author_names": [ "Hyun-Jo Yoo" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "165128225", "title": "\"A mother's last words to her children\" Wendy's Roles in Peter Pan and film adaptations", "abstract": "", "corpus_id": 165128225, "venue": "", "year": 2017, "author_names": [ "Gaby Pons van Dijk" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "164705312", "title": "Wendy's Story: The Necessity of Women in Peter Pan", "abstract": "", "corpus_id": 164705312, "venue": "", "year": 2016, "author_names": [ "Jessica Hedrick" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "151521120", "title": "On the Desire and the Imaginary Fantasy in Peter Pan and Wendy", "abstract": "", "corpus_id": 151521120, "venue": "", "year": 2016, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "164781954", "title": "The Enigmatic Significance of the Kiss in Peter Pan and Wendy", "abstract": "", "corpus_id": 164781954, "venue": "", "year": 2016, "author_names": [ "Young-zun Lee" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "229579686", "title": "Exploring Harry Potter and Peter Pan and the Ties Between Them. A Study of Mothers and Motherless Heroes in J. K. Rowling's Harry Potter series and J. M. Barrie's Peter and Wendy", "abstract": "", "corpus_id": 229579686, "venue": "", "year": 2020, "author_names": [ "Lara Dawn Michelsen" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "230624532", "title": "Peter Pan and Wendy: On the Healing Power of the Psychological Fantasy.", "abstract": "", "corpus_id": 230624532, "venue": "", "year": 2020, "author_names": [], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "214258407", "title": "Peter Pan and Wendy Darling. A study of J.M. Barrie's use of gender in his original play Peter Pan and three filmic adaptations", "abstract": "", "corpus_id": 214258407, "venue": "", "year": 2019, "author_names": [ "Nuria Cervera Rovira" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "216734712", "title": "PENOLAKAN PETER PAN UNTUK MENJADI DEWASA DALAM NOVEL PETER AND WENDY KARYA J.M BARRIE", "abstract": "ABSTRACT This research is entitled \"Penolakan Peter Pan untuk menjadi dewasa dalam novel Peter and Wendy karya J.M Barrie\" is written to fullfil the requirement of accomplishing bachelor's degree in English Department Faculty of Humanities Sam Ratulangi university. The focus of this research is Peter Pan's rejection in the novel. The writer use theory from Leary (2001) to analyze rejection in the novel. This research also include reason and impact of the rejection. The writer use extrinsic approach to discuss about relation of psychology and literary to identify, analyze, and describe about Peter Pan's rejection who portrayed in the novel Peter and Wendy and to analyze the impact of Peter Pan's rejection. The result of this research is Peter Pan's rejection for being mature is also relate to his past, before he live with the fairies. Peter Pan's rejection about maturation in this is portrayed with the other character. From the rejection for being mature, the writer find six impact from the rejection. Keywords: Character, Rejection, Peter Pan's Rejection", "corpus_id": 216734712, "venue": "", "year": 2018, "author_names": [ "Elisabeth Priskila Kumolontang" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "233223415", "title": "Peter Pan, Wendy, and the Lost Boys: A Dead Mother Complex", "abstract": "Melanie Klein and Andre Green offer competing descriptions of primitive mental development. The former emphasizes the need to control internal objects through splitting and projective identification, while the latter emphasizes a narcissistic retreat from objects through progressive deadening of the self. To bridge these theoretical differences a spectrum of fantasies is proposed ranging from reanimation (bringing deadness back to life) to reparation (healing damage caused by paranoid attack) Clinically, alternations between these two defensive patterns occur, acting together to avoid painful anxieties. The interplay of these defenses is illustrated by a dream drawn from clinical practice, from the life of James Barrie, and from his fictional creation Peter Pan.", "corpus_id": 233223415, "venue": "Journal of the American Psychoanalytic Association", "year": 2021, "author_names": [ "Robert S White" ], "n_citations": 0, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "55379403", "title": "Ultrafast X Ray Absorption Spectroscopy of Strongly Correlated Systems: Core Hole Effect.", "abstract": "In recent years, ultrafast pump probe spectroscopy has provided insightful information about the nonequilibrium dynamics of excitations in materials. In a typical experiment of time resolved x ray absorption spectroscopy, the systems are excited by a femtosecond laser pulse (pump pulse) followed by an x ray probe pulse after a time delay to measure the absorption spectra of the photoexcited systems. We present a theory for nonequilibrium x ray absorption spectroscopy in one dimensional strongly correlated systems. The core hole created by the x ray is modeled as an additional effective potential of the core hole site, which changes the spectrum qualitatively. In equilibrium, the spectrum reveals the charge gap at half filling and the metal insulator transition in the presence of the core hole effect. Furthermore, a pump probe scheme is introduced to drive the system out of equilibrium before the x ray probe. The effects of the pump pulse with varying frequencies, shapes, and fluences are discussed for the dynamics of strongly correlated systems in and out of resonance. The spectrum indicates that the driven insulating state has a metallic droplet around the core hole. The rich structures of the nonequilibrium x ray absorption spectrum give more insight into the dynamics of electronic structures.", "corpus_id": 55379403, "venue": "Physical review letters", "year": 2019, "author_names": [ "Chen-Yen Lai", "Jian-Xin Zhu" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "219332349", "title": "Title Core hole effect on dipolar and quadrupolar transitions of SrTiO3 and BaTiO3 at TiK edge", "abstract": "", "corpus_id": 219332349, "venue": "", "year": 2020, "author_names": [ "Tomoyuki Yamamoto", "Teruyasu Mizoguchi", "Isao Tanaka" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "14028840", "title": "Influence of the core hole effect on optical properties of magnesium oxide (MgO) near the Mg L edge region.", "abstract": "The influence of the core hole effect on optical properties of magnesium oxide (MgO) is established through experimental determination of optical constants and first principles density functional theory studies. Optical constants (d and b) of MgO thin film are measured in the spectral region 40 300 eV using reflectance spectroscopy techniques at the Indus 1 synchrotron radiation source. The obtained optical constants show strong core exciton features near the Mg L edge region, causing significant mismatch with Henke's tabulated values. On comparing the experimentally obtained optical constants with Henke's tabulated values, an edge shift of ~3.0 eV is also observed. Distinct evidence of effects of core exciton on optical constants (d and b) in the near Mg L edge absorption spectra are confirmed through first principles simulations.", "corpus_id": 14028840, "venue": "Journal of synchrotron radiation", "year": 2018, "author_names": [ "Mangalika Sinha", "Mohammed H Modi", "Haranath Ghosh", "Praveen Kumar Yadav", "Raj Kumar Gupta" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "121701557", "title": "CORE HOLE EFFECT IN THE Ce L3 X RAY ABSORPTION SPECTRA OF CeO2 AND CeFe2: NEW EXAMINATION BY USING RESONANT X RAY EMISSION SPECTROSCOPY", "abstract": "We consider two different resonant X ray emission spectra for Ce compounds: Ce 3d to 2p X ray emission (denoted by 3d RXES) and valence to 2p X ray emission (v RXES) both of which follow the Ce 2p to 5d resonant excitation. We propose that the comparison of the 3d and v RXES spectra is a new powerful method of directly detecting the core hole effect in the final state of Ce L3 X ray absorption spectra (XAS) We applied this method to recent experimental RXES spectra for CeO2 and CeFe2, and showed unambiguously that the core hole effect should be essential in the XAS of both materials. This result is confirmed by theoretical calculations, which reproduce well the experimental RXES and XAS spectra. We conclude that the ground state of CeO2 is in the mixed state of 4f0 and configurations, where is a ligand hole, instead of a pure 4f0 configuration which was proposed recently by first principles energy band calculations. Also, we conclude that the double peaks observed in L3 XAS of CeFe2 are caused by the 4f0 and 4f1 configurations, which are mixed in the ground state but separated in energy by the large core hole potential in the final state of XAS.", "corpus_id": 121701557, "venue": "", "year": 2013, "author_names": [ "Akio Kotani" ], "n_citations": 12, "n_key_citations": 0, "score": 0 }, { "doc_id": "98661825", "title": "Core hole effect on XANES and electronic structure of minor actinide dioxides with fluorite structure", "abstract": "Abstract The authors investigated theoretically core hole effects on X ray absorption near edge structures (XANES) of Np and Am LIII in neptunium dioxide (NpO2) and americium dioxide (AmO2) with CaF2 type crystal lattices using the all electron full potential linearized augmented plane wave (FP LAPW) method. The peak creation mechanism of XANES was shown by examining the electronic structures of these oxides, which indicated that core hole screening was more marked for AmO2 than for NpO2 because of the difference in the charge transfer between these oxides. Furthermore, the results of charge density analysis suggested that the white line was assigned to the quasi bound state composed of the localized Np d or Am d components and O components, and that the tail structure was created as a result of delocalized standing waves between the Np or Am atoms.", "corpus_id": 98661825, "venue": "", "year": 2012, "author_names": [ "Chikashi Suzuki", "Tsuyoshi Nishi", "Masami Nakada", "Mitsuo Akabori", "Masaru Hirata", "Yoshiyuki Kaji" ], "n_citations": 21, "n_key_citations": 0, "score": 0 }, { "doc_id": "119709687", "title": "Core hole effect on topological band order in cubic semiconductors: A first principles study", "abstract": "High energy x ray beams can excite the inner shell electrons out of the sample and simultaneously leave behind core holes. Using first principles calculations, we investigate the core hole effect on the topological band order in cubic semiconductors Ge and InSb. The band orders around the Fermi level are significantly changed by the presence of core holes, and consequently a topological phase transition from trivial to nontrivial states occurs with the increasing of the density of the core hole. Our work reveals an underlying relation between the core hole effect and the topological band order. It also provides a novel method for engineering three dimensional topological insulators by optical means.", "corpus_id": 119709687, "venue": "", "year": 2014, "author_names": [ "Wanxiang Feng", "Jun Ding", "Botao Fu", "Ying Zhang", "Yugui Yao" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "123536420", "title": "Oxygen 1s excitation and tetragonal distortion from core hole effect in BaTiO3", "abstract": "The accurate description of the O 1s excitation in BaTiO3 has been elusive so far. In this Rapid Communication, the electronic structure and the high resolution electron energy loss near edge structures of the O K edge in tetragonal BaTiO3 are investigated using first principles calculations. The results demonstrate a clear correlation between the broadening of the lower energy fine structure and the anisotropic effects induced by the core hole potential, which are directly related to the structural distortion occurring in tetragonal BaTiO3. Moreover, we show that a significant improvement of the description of higher lying structures can be obtained when correcting the energy position of the Ba 4f states. This demonstrates that the O 1s spectrum can be a very effective probe of the distortion and changes in the local electronic structure, and be used as a sensitive tool for studying new materials and ferroelectric transitions.", "corpus_id": 123536420, "venue": "", "year": 2013, "author_names": [ "Matthieu Bugnet", "G Radtke", "Gianluigi A Botton" ], "n_citations": 9, "n_key_citations": 1, "score": 0 }, { "doc_id": "97557286", "title": "A new method of directly determining the core hole effect in the Ce L3 XAS of mixed valence Ce compounds An application of resonant X ray emission spectroscopy", "abstract": "Using a simplified model, we calculate resonant X ray emission (RXE) spectra with Ce 2p to 5d excitation and Ce nl to 2p de excitation for mixed valence Ce compounds, where nl is 3d or valence stat", "corpus_id": 97557286, "venue": "", "year": 2011, "author_names": [ "Akio Kotani", "Kristina O Kvashnina", "Sergei M Butorin", "Pieter Glatzel" ], "n_citations": 33, "n_key_citations": 0, "score": 0 }, { "doc_id": "95967800", "title": "Core hole effect in NEXAFS spectroscopy of polycyclic aromatic hydrocarbons: Benzene, chrysene, perylene, and coronene", "abstract": "Carbon K edge NEXAFS spectra of chrysene, perylene, and coronene were measured using synchrotron radiation, and the results were analyzed by ab initio molecular orbital (MO) calculations. The spectra do not agree well with the calculated density of unoccupied states (DOUS) indicating significant core hole effect leading to deviation of the NEXAFS spectra from the DOUS. On the other hand, the observed spectra were well simulated by theoretical calculations taking this effect into account by the improved virtual orbital method. This allowed a detailed analysis of the core hole effect, which affects both transition energy and intensity. During the course of this analysis, the core hole effect in benzene was also analyzed. It was found that the magnitude of the core hole effect is strongly dependent on the combination of the excited site and final vacant orbital. This dependence could be semiquantitatively explained in terms of the combination of the excitation site and the orbital patterns of the final stat.", "corpus_id": 95967800, "venue": "", "year": 1998, "author_names": [ "Hiroshi Oji", "Ryuichi Mitsumoto", "Eisuke Ito", "Hisao Ishii", "Yukio Ouchi", "Kazuhiko Seki", "Toshihiko Yokoyama", "Toshiaki Ohta", "Nobuhiro Kosugi" ], "n_citations": 100, "n_key_citations": 0, "score": 0 }, { "doc_id": "59374295", "title": "Core hole effect on dipolar and quadrupolar transitions of SrTiO3 and BaTiO3 at Ti K edge", "abstract": "Experimental pre edge fine structures in the x ray absorption spectra of \\mathrm{Sr}\\mathrm{Ti}\\mathrm{O}}_{3} and \\mathrm{Ba}\\mathrm{Ti}\\mathrm{O}}_{3} at Ti $K$ edge are successfully reproduced within the framework of first principles one electron theory using the full potential augmented plane wave plus local orbitals method. The importance of the following two points has been demonstrated: (1) proper inclusion of a Ti $1s$ core hole using a large supercell, and (2) consideration of both dipolar and quadrupolar transitions. The core hole effect is found to be more significant for quadrupolar transitions that form the first two peaks of the pre edge structure, i.e. $p1$ to $p2$ They correspond to {t}_{2g} and {e}_{g} bands of the core holed Ti. The other two peaks, $p3$ and $p4$ are found to be entirely due to the dipolar transition.", "corpus_id": 59374295, "venue": "", "year": 2005, "author_names": [ "Tomoyuki Yamamoto", "Teruyasu Mizoguchi", "Isao Tanaka" ], "n_citations": 47, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "216645763", "title": "Impact of the digital divide in the age of COVID 19", "abstract": "In early 2020, talks of preparation for coronavirus disease 2019 (COVID 19) were furiously circulating around the healthcare system nationwide, and having seen what was occurring in China, and later in Italy, we feared what was to come. Like many others, our hospital system began looking closely at the recommendations for decreasing transmission of COVID 19, chief among them social distancing. By early March, the need for an immediate adaptation of our clinical care delivery system was clear. Within a week, clinics had transitioned from in person visits to telehealth involving telephone or video. Screening processes for COVID 19 were quickly made available on a free online platform through which at risk individuals were directed to drivethrough centers for in person testing. The problem was that many of our patients could not access the online system. In our roles as directors of free clinics, we have become intimately involved with the complexity inherent to the care of underserved populations, including how seemingly innovative programs can sometimes not meet their intended goals. The CARES clinic has a main site and a rural outreach site that treat uninsured adult patients and a pediatric immunization clinic for uninsured and underinsured children. The 529 Meeting Street clinic treats patients at a drop in resource center serving individuals experiencing housing instability. Levels of literacy, extent of chronic diseases, and complexity of social circumstances for patient populations at both clinics are highly variable. As our main hospital system was transitioning to telehealthbased care, we were rapidly trying to put measures into place at our free clinics that would ensure that our patients did not lose their access to health care. It quickly became apparent that the newly built telehealth systems created additional access hurdles for our free clinic patients, and we would soon learn that pockets existed within the larger population that were impacted by these barriers. As is often the case, those whose access was impeded were the most vulnerable to poor health outcomes related to COVID 19. This was not unique to our community, and in fact it was repeated throughout the country when other hospital systems transitioned to telehealth as a sensible and efficient way to deliver health care while implementing social distancing to combat the spread of COVID 19. Simultaneously, the diminished accessibility to technology based on various societal and social factors, sometimes referred to as the digital gap or digital divide, was being exposed at a critical time in a public health crisis. Frighteningly, there were no measures at the ready to address it. Use of telehealth platforms has been on the rise over the past several years. Telehealth has been lauded as a means to close the healthcare gap to rural populations; however, recent authors have raised the concern that technology may actually be widening the gap between groups both nationally and even globally due to persistent social, economic, and political factors. Taken within the context of several social determinants of health, we can see how the digital divide occurs and can perpetuate inequity based on various social factors (Table 1) In fact, the American Medical Informatics Association (AMIA) called for it to be included as a social determinant of health in 2017. Regarding the patient populations seen in our free clinics, our first concern was physical access to Internet services, defined largely by built environment factors. Our homeless population lacked reliable Internet access outside of the technology center at the clinic. About a third of those served at the rural CARES clinic site do not have Internet access in their homes. This is not unlike the Federal Communications Commission report in 2018 showing that within the United States, 31% of rural households still lack access to broadband Internet. A combination of technology and in person services has been found to help address some of this disparity, and in our case, a direct combination of the 2 types of service proved necessary. At the 529 Meeting Street clinic, a program was developed whereby staff", "corpus_id": 216645763, "venue": "J. Am. Medical Informatics Assoc.", "year": 2020, "author_names": [ "Anita Ramsetty", "Cristin Adams" ], "n_citations": 109, "n_key_citations": 1, "score": 3 }, { "doc_id": "220794334", "title": "COVID 19 and the digital divide in the UK", "abstract": "", "corpus_id": 220794334, "venue": "The Lancet Digital Health", "year": 2020, "author_names": [ "Geoff Watts" ], "n_citations": 43, "n_key_citations": 0, "score": 0 }, { "doc_id": "212737851", "title": "China's prefectural digital divide: Spatial analysis and multivariate determinants of ICT diffusion", "abstract": "Abstract Much research has made efforts to elaborate upon different dimensions to the digital divide, including informational and communications technology (ICT) access, ICT usage, and ICT outcomes. We assess the utility of such perspectives for studying digital inequality across prefectural cities in China. China is the world's largest ICT market in terms of the number of mobile devices in use, internet users, and broadband subscriptions, yet it has notable digital inequality within and between provinces, prefectural cities, and counties. In this study, we built a conceptual framework of digital divides for prefectural cities in China, examined spatial agglomeration using cluster analysis, and explored the leading correlates using a geographically weighted regression (GWR) model. A large digital divide among the prefectural cities in China was revealed, with cities with a high administrative level having a relatively high digital development index(DDI) score. Prefectural cities with high DDI levels are mainly agglomerated in large metropolitan areas, such as Beijing Tianjin Hebei, the Yangtze River Delta, the Pearl River Delta, and the West Coast Economic Zone of the Taiwan Straits. Prefectural cities with low DDI levels are concentrated in the rural mountainous regions in southwest China and poverty stricken areas in central and western China. This study also found that the leading determinants of the digital divide are urban residential income, the secondary education gross enrollment ratio, rural residential income, and the working age population ratio, which indicates that socio economic problems, rather than institution and innovation aspects, have to be solved for improving ICT use and outcomes.", "corpus_id": 212737851, "venue": "Int. J. Inf. Manag.", "year": 2020, "author_names": [ "Zhouying Song", "Chen Wang", "Luke Bergmann" ], "n_citations": 29, "n_key_citations": 0, "score": 0 }, { "doc_id": "61996637", "title": "The Digital Divide", "abstract": "October 8, 2014 Page 1 of 6 The National Communication Association and the Digital Divide As the largest national association representing Communication scholars, teachers, and practitioners, the National Communication Association (NCA) is firmly committed to the goal of fostering and promoting free and ethical communication, including via electronic resources. In 1999, the association adopted a resolution addressing the digital divide, and updated the resolution in 2013.", "corpus_id": 61996637, "venue": "", "year": 2020, "author_names": [ "Alexander van Deursen", "Jan Agm van Dijk" ], "n_citations": 11, "n_key_citations": 0, "score": 1 }, { "doc_id": "67772515", "title": "The first level digital divide shifts from inequalities in physical access to inequalities in material access", "abstract": "For a long time, a common opinion among policy makers was that the digital divide problem would be solved when a country's Internet connection rate reaches saturation. However, scholars of the second level digital divide have concluded that the divides in Internet skills and type of use continue to expand even after physical access is universal. This study based on an online survey among a representative sample of the Dutch population indicates that the first level digital divide remains a problem in one of the richest and most technologically advanced countries in the world. By extending basic physical access combined with material access, the study finds that a diversity in access to devices and peripherals, device related opportunities, and the ongoing expenses required to maintain the hardware, software, and subscriptions affect existing inequalities related to Internet skills, uses, and outcomes.", "corpus_id": 67772515, "venue": "New Media Soc.", "year": 2019, "author_names": [ "Alexander Jam Van Deursen", "Jan Agm van Dijk" ], "n_citations": 136, "n_key_citations": 4, "score": 1 }, { "doc_id": "13690771", "title": "Exploring Privilege in the Digital Divide: Implications for Theory, Policy, and Practice", "abstract": "Background and Objectives The digital revolution has resulted in innovative solutions and technologies that can support the well being, independence, and health of seniors. Yet, the notion of the \"digital divide\" presents significant inequities in terms of who accesses and benefits from the digital landscape. To better understand the social and structural inequities of the digital divide, a realist synthesis was conducted to inform theoretical understandings of information and communication technologies (ICTs) to understand the practicalities of access and use inequities; to uncover practices that facilitate digital literacy and participation; and to recommend policies to mitigate the digital divide. Research Design and Methods A systematic search yielded 55 articles published between 2006 and 2016. Synthesis of existing knowledge, combined with user experience elicited through a deliberative dialogue session with community stakeholders (n 35) made visible a pattern of privilege that determined individual agency in ICT access and use. Results Though age is consistently centralized as the key determinant of the digital divide, our analyses, which encompassed both van Dijk's resources and appropriation theory and intersectionality, appraised this notion and revealed that age is not the sole determinant. Findings highlight the role of other factors that contribute to digital inequity among community dwelling middle aged (45 64) and older (65+ adults, including education, income, gender, and generational status. Discussion and Implications Informed by results of a realist synthesis that was guided by intersectional perspectives, a conceptual framework was developed outlining implications for theory, policy, and practice to address the wicked problem that is the digital divide.", "corpus_id": 13690771, "venue": "The Gerontologist", "year": 2019, "author_names": [ "Mei Lan Fang", "Sarah L Canham", "Lupin Battersby", "Judith Sixsmith", "Mineko Wada", "Andrew Sixsmith" ], "n_citations": 59, "n_key_citations": 3, "score": 0 }, { "doc_id": "53872548", "title": "The Digital Divide in Health Related Technology Use: The Significance of Race/Ethnicity", "abstract": "Background and Objectives Technology can enhance the health and quality of life of diverse populations and may play an important role in reducing health disparities. Although a \"digital divide\" between the young and the old has been noted, it is unclear whether the use of technology for managing health differs by race/ethnicity among older adults. This study uses nationally representative data from community dwelling older Americans to characterize racial/ethnic differences in health related technology use. Design and Methods Data came from 1,336 white, black, and Hispanic adults aged 54 and older who completed the 2014 technology module of the Health and Retirement Study. Racial/ethnic differences in overall health related technology use were assessed using Poisson regression. Then, F tests were used to assess differences in the use of phone calls, text messages, E mails, social media, health management sites, health related mobile applications, web searches, and brain games for health purposes. Results Compared to whites, older blacks and Hispanics were less likely to use technology for health related purposes after accounting for demographic characteristics, education, and health conditions. They were also less likely to make or receive phone calls, use health management sites, search the web for health information, and use brain games for their health. Discussion and Implications Older racial and ethnic minorities are less likely than whites to use certain technologies when managing their health. These findings highlight the importance of understanding the patterns of health related technology use across racially and ethnically diverse populations to appropriately tailor interventions aimed at improving minority health and eliminating health disparities.", "corpus_id": 53872548, "venue": "The Gerontologist", "year": 2019, "author_names": [ "Uchechi A Mitchell", "Perla Chebli", "Laurie Ruggiero", "Naoko Muramatsu" ], "n_citations": 49, "n_key_citations": 1, "score": 0 }, { "doc_id": "197422988", "title": "Exploring the Digital Divide: Age and Race Disparities in Use of an Inpatient Portal.", "abstract": "Background: Age and race disparities in the use of new technologies the digital divide may be limiting the potential of patient facing health information technology to improve health and health care. Objective: To investigate whether disparities exist in the use of patient portals designed specifically for the inpatient environment. Methods: Patients admitted to the six hospitals affiliated with a large, Midwestern academic medical center from July 2017 to July 2018 were provided with access to a tablet equipped with an inpatient portal and recruited to participate in the study (n 842) Demographic characteristics of study enrollees were obtained from patients' electronic health records and surveys given to patients during their hospital stay. Log files from the inpatient portal were used to create a global measure of use and calculate use rates for specific portal features. Results: We found both age and race disparities in use of the inpatient portal. Patients aged 60 69 (45.3% difference, p 0.001) and those over age 70 (36.7% difference, p 0.04) used the inpatient portal less than patients aged 18 29. In addition, African American patients used the portal less than White patients (40.4% difference, p 0.004) Discussion: These findings suggest that the availability of the technology alone may be insufficient to overcome barriers to use and that additional intervention may be needed to close the digital divide. Conclusions: We identified lower use of the inpatient portal among African American and older patients, relative to White and younger patients, respectively.", "corpus_id": 197422988, "venue": "Telemedicine journal and e health the official journal of the American Telemedicine Association", "year": 2019, "author_names": [ "Daniel M Walker", "Jennifer L Hefner", "Naleef Fareed", "Timothy R Huerta", "Ann Scheck McAlearney" ], "n_citations": 40, "n_key_citations": 0, "score": 0 }, { "doc_id": "149987945", "title": "Culture is digital: Cultural participation, diversity and the digital divide", "abstract": "Digital media are seen as important instruments of increasing participation and diversity in arts and culture. To examine whether this view is justified, this article draws on two bodies of research that have hitherto remained disconnected: research on cultural participation and research on the digital divide. Building on these insights, the article examines the Taking Part Survey data on digital media and cultural participation in the United Kingdom between 2005/2006 and 2015/2016, focusing on museums and galleries. While the results confirm that digital media provide an important means of engaging new audiences, they also show that the engagement with museums and galleries both online and offline remains deeply unequal. Most worryingly, the gaps between the haves and the have nots are even wider online than in the case of physical visits. Rather than helping increase the diversity of audiences, online access seems to reproduce, if not enlarge, existing inequalities.", "corpus_id": 149987945, "venue": "New Media Soc.", "year": 2019, "author_names": [ "Sabina Mihelj", "Adrian Leguina", "Jack Downey" ], "n_citations": 35, "n_key_citations": 1, "score": 0 }, { "doc_id": "159153459", "title": "Automated pastures and the digital divide: How agricultural technologies are shaping labour and rural communities", "abstract": "A \"digital revolution\" in agriculture is underway. Advanced technologies like sensors, artificial intelligence, and robotics are increasingly being promoted as a means to increase food production efficiency while minimizing resource use. In the process, agricultural digitalization raises critical social questions about the implications for diverse agricultural labourers and rural spaces as digitalization evolves. In this paper, we use literature and field data to outline some key trends being observed at the nexus of agricultural production, technology, and labour in North America, with a particular focus on the Canadian context. Using the data, we highlight three key tensions observed: rising land costs and automation; the development of a high skill/low skilled bifurcated labour market; and issues around the control of digital data. With these tensions in mind, we use a social justice lens to consider the potential implications of digital agricultural technologies for farm labour and rural communities, which directs our attention to racial exploitation in agricultural labour specifically. In exploring these tensions, we argue that policy and research must further examine how to shift the trajectory of digitalization in ways that support food production as well as marginalized agricultural labourers, while pointing to key areas for future research which is lacking to date. We emphasize that the current enthusiasm for digital agriculture should not blind us to the specific ways that new technologies intensify exploitation and deepen both labour and spatial marginalization.", "corpus_id": 159153459, "venue": "Journal of Rural Studies", "year": 2019, "author_names": [ "Sarah Rotz", "Evan Gravely", "Ian Mosby", "Emily Duncan", "Elizabeth Finnis", "Mervyn Horgan", "Joseph LeBlanc", "Ralph C Martin", "Hannah Tait Neufeld", "Andrew Nixon", "Laxmi Prasad Pant", "Vivian Shalla", "Evan D G Fraser" ], "n_citations": 76, "n_key_citations": 1, "score": 0 } ]

[ { "doc_id": "168383672", "title": "Discussion on Green Procurement in Government Investment Projects in China", "abstract": "This article mainly summarized green procurement issues on domestic and foreign government in vestment projects and analyzed the reasons and difficulty in green procurement of China's government in vestmentprojects.Then,the article puts forward somerelevant opinions and suggestions from fiveaspects.", "corpus_id": 168383672, "venue": "", "year": 2009, "author_names": [ "Li Yang" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "157888240", "title": "Reforming the procurement of construction and financing of Australian infrastructure advancing capacity, competition and investment", "abstract": "Funded by an Australian Research Council (ARC) Linkage grant over four years (2009 13) the Major Infrastructure Procurement project sought to find more effective and efficient ways of procuring and delivering the nation's social and economic infrastructure by investigating constraints relating to construction capacity, competition, and finance in new public sector major infrastructure.1 The research team comprised researchers in construction economics and finance from Queensland University of Technology (QUT) Griffith University (GU) The University of Hong Kong (UHK) and The University of Newcastle (UoN) Project partners included state government departments and agencies responsible for infrastructure procurement and delivery from all Australian mainland states, and private sector companies and peak bodies in the infrastructure sector (see \"Introduction\" for complete list) There are a number of major outcomes from this research project. The first of these is a scientifically developed decisionmaking model for procurement of infrastructure that deploys a novel and state of the art integration of dominant microeconomic theory (including theories developed by two Nobel Prize winners) The model has been established through empirical testing and substantial experiential evidence as a valid and reliable guide to configuring procurement of new major and mega infrastructure projects in pursuance of superior Valuefor Money (VfM) The model specifically addresses issues of project size, bundling of contracts, and exchange relationships. In so doing, the model determines the suitability of adopting a Public Private Partnership (PPP) mode.", "corpus_id": 157888240, "venue": "", "year": 2014, "author_names": [ "Adrian J Bridge", "Robert J Bianchi" ], "n_citations": 4, "n_key_citations": 1, "score": 1 }, { "doc_id": "168472989", "title": "CHINA'S WTO ACCESSION: FOREIGN INVESTMENT, GOVERNMENT PROCUREMENT, GRAIN SELF SUFFICIENCY, AND LABOUR STANDARDS", "abstract": "", "corpus_id": 168472989, "venue": "", "year": 1998, "author_names": [ "Kym Anderson" ], "n_citations": 6, "n_key_citations": 0, "score": 1 }, { "doc_id": "12648211", "title": "A government IT focused e procurement strategy for Colombia", "abstract": "In Colombia, public agencies execute independent contractual processes to acquire the same information technology (IT) goods or services, suppliers are mostly selected based on the minimum price, and the current procurement process is lengthy and inefficient. There is a need for allowing the Colombian Government to select suppliers considering other criteria (e.g. quality assurance) and also make purchases more efficient and transparent. In this paper we present an initiative aimed at facilitating and standardizing the purchase of IT goods and services across public agencies, through the implementation of a government IT focused e procurement strategy. This strategy is mainly focused on the establishment and implementation of an IT e procurement process, based on Pricing Framework Agreements and supported by a set of tools and training. The implementation of this strategy will enable the Colombian State to achieve a higher level of rationalization over the investment in IT and a reduction in time, effort and cost of the procurement process.", "corpus_id": 12648211, "venue": "ICEGOV", "year": 2014, "author_names": [ "Lina Marcela Morales Moreno", "Javier Orlando Torres Paez", "Adolfo Serrano Martinez" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "155674984", "title": "PPP project procurement model selection in China: does it matter?", "abstract": "Abstract Procurement models play a key role in determining the success of a public private partnership (PPP) project because they can help the government select the best bidder. Yet, few studies have systematically examined the selection of different procurement models. A content analysis is performed to discuss the institutional and legal framework along with the features of different procurement models in China. A multinomial logistic regression model is then applied to empirically investigate the relationship between the selection of different procurement models and the internal characteristics of the projects, including the investment, duration, operation mode, sector and region. Besides, a questionnaire survey to Chinese officials participating in PPP project procurement is conducted to identify the critical factors affecting the selection preferences. The regression analysis shows that the PPP project procurement model selection in China varies significantly with the internal characteristics of the projects. Moreover, the three most important factors identified are the laws and regulations, internal characteristics of the projects and advice from consultant agencies. These results indicate that the PPP project procurement model selection in China does matter. Helpful policy suggestions for the governments of China and other countries are also provided.", "corpus_id": 155674984, "venue": "Construction Management and Economics", "year": 2019, "author_names": [ "Wang Pu", "Fei Xu", "Ruoxun Chen", "Rui Cunha Marques" ], "n_citations": 5, "n_key_citations": 0, "score": 1 }, { "doc_id": "214623815", "title": "Application of Natural Language Processing (NLP) and Text Mining of Big Data to Engineering Procurement Construction (EPC) Bid and Contract Documents", "abstract": "Influenced by the innovative technological advances made in recent years, a number of major economies are increasing their national investment in building decision support systems applicable to the industrial sector. This study was conducted with government support to analyze big data in engineering accumulated from the past, develop tools for forecasting and risk management, and use them to build systems that support decision making. The target of system development for this study is the industrial engineering sector, also known as Engineering Procurement Construction (EPC) and is largely divided into five modules, as follows. First, engineering design cost prediction targeted accurately predicting Man Hour (M/H) and provided useful references to contractors and project managers by developing models that predict design costs in the engineering field. Using the M/H prediction model developed by this research, M/H under similar environments or conditions can be predicted and solutions prepared on the project start stage to manage potential risks. Second, engineering design error analysis was conducted with the purpose of helping project implementation risk management by developing a system to analyze actual design error data that occurred in past projects in order to minimize and prevent design errors. Third, engineering design change analysis was conducted to analyze amounts that could be added by changing order and preparing countermeasures in advance due to design changes occurring during the project. The system was built to support decision making as a result of utilizing accumulated data. Fourth, engineering Invitation to Bid (ITB) analysis established a support system to efficiently perform ITB analysis and carry out new processes that automatically detect and present provisions that could pose risks. Natural Language Processing (NLP) techniques were applied to conduct the analysis, and Subject Matter Experts (SMEs) verified the quality during the process of establishing the procedure. Fifth, equipment maintenance cycle forecasting was conducted to predict the demand for repairing items and ensure that equipment requiring maintenance could be prepared before the predicted malfunction. This paper first introduces the five modules of decision support systems in a wide range, then details the results of the fourth module, the Engineering ITB Analysis step by step.", "corpus_id": 214623815, "venue": "2020 6th Conference on Data Science and Machine Learning Applications (CDMA)", "year": 2020, "author_names": [ "Youyi Kim", "Junghyun Lee", "Eul-Bum Lee", "Ju-Hoon Lee" ], "n_citations": 2, "n_key_citations": 0, "score": 2 }, { "doc_id": "219012507", "title": "Institutional Policy in Land Procurement Under The Omnibus Law Regime", "abstract": "The legal culture procedure with socio legal analysis will be able to answer the fundamental questions in the problems of practices of land procurement for public interests, in particular the issue of compensation. The crucial issue of compensation within the implementation of the policy of land procurement regards the non equivalence of land value, both utility value and economic value of structures and landscapes, to the monetary compensation. The use of the legal culture approach is to provide answers and implement them to resolve issues of land procurement for public interests in the omnibus law regime to maintain justice to landowners and preserve the environment. The correlation of the cultural approach and activities of land procurement is that culture refers to the target of the national conscience, and the cultural approach based on the growth mindset will result in wisdom and nobility of the decisions of public officials to prioritize the people rather than interests of investment. The government must choose to renegotiate the policy of enacting the Law of Employment Creation, which is judged by the greater public to conflict with the spirit and mandate of the Preamble and contents of the 1945 Constitution. It needs renegotiation between the state and people by discussing in depth the legal substance of the law is not performed, and then the law in question must have its enactment firmly rejected.", "corpus_id": 219012507, "venue": "", "year": 2020, "author_names": [ "Imam Kuswahyono", "Hikmatul Ula" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "179343904", "title": "E Procurement Praxis in Government Organizations", "abstract": "Contemporarily, the utilization of Internet for business transactions has advanced significantly. The penetration of the telecommunication network has been a foremost causative factor. Advances in telecommunications and computing occurred frequently in the past and is now flocked on the Internet. Electronic commerce is used by the Companies to enter into new markets that would have otherwise been excluded, due to geography, cost and other issues. Companies rely on electronic commerce to outspread their products to novel sets of customers and novel parts of the globe. The web facilitates a company to expose a new product into the market, get instantaneous customer reaction, enhance and impeccable it, without incurring enormous investment in the physical distribution infrastructure or purchasing a shelf space at a retailer or distributor. Electronic procurement (E procurement) has been widely embraced even by governments seeking administrative efficiency and cost reduction techniques that were originally experienced in the private sector. The purpose of this paper is to understand the E procurement praxis (practice) and its usage in Government organizations (E Government Procurement) Case studies of three government organizations from India and US were deliberately studied and analyzed. The results revealed that cost benefit was the main driver for these organizations to implement E procurement.", "corpus_id": 179343904, "venue": "", "year": 2013, "author_names": [ "Dr Lakshmi P", "S Visalakshmi" ], "n_citations": 0, "n_key_citations": 0, "score": 2 }, { "doc_id": "216248082", "title": "African agency in the Belt and Road Initiative: Kenya's rail investment as China's flagship BRI project in Africa", "abstract": "This chapter illustrates how Chinese financing and contractors have created a new development option for African governments seeking to deliver infrastructure megaprojects. It provides a study of the Standard Gauge Railway built by Kenya with Chinese assistance under the Belt and Road Initiative (BRI) between 2014 and 2017 aEUR\" a project previously assessed as non viable by the World Bank. The chapter emphasizes the ability of the Kenyan government to set up a powerful centralized organizational structure to overcome governance challenges and coordinate work with the Chinese contractor to successfully deliver the railway. However, opacity and ballooning land acquisition costs suggests that rent seeking has inflated the cost to taxpayers, echoing several previous international corruption scandals in Kenya. At the level of the private sector, Kenyan agency was partly visible in vested interests opposing the project, partly in successful lobbying to access the closed procurement markets of the Chinese contractor. One of the most frequently raised issues regarding developing countriesaEUR(tm) engagement with the BRI is (over)indebtedness, and in this case Kenya has developed a fiscal instrument to repay the Chinese loans. ChinaaEUR(tm)s follow up trade and investment in East Africa is believed to be a major element of the rationale for the rail project, although concrete measures to achieve this are still lacking and regional connectivity is limited. Data on this will have to be analysed in the next decade or so. The case suggests that a centralized approach in African government engagement with the BRI can deliver projects for a reasonable (albeit inflated) cost, while development benefits and socio economic change require active management beyond the temporary governance model to organize project delivery.", "corpus_id": 216248082, "venue": "", "year": 2020, "author_names": [ "Uwe Wissenbach" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "236065965", "title": "Green Public Procurement: Climate Provisions in Public Tenders Can Help Reduce German Carbon Emissions", "abstract": "This report estimates that government consumption and investment are responsible for at least 12 percent of German greenhouse gas emissions, mostly arising from the provision of public services and construction. Climate friendly Green Public Procurement (GPP) which takes into account the carbon footprint of products and services in public tenders, can help reduce these emissions. Construction, and especially infrastructure, can be a main area for climate change mitigation through GPP. Yet the implementation of GPP practices in Germany is still limited and not focused on emission reduction. Based on a survey among procurement officials, this report shows that the main perceived barrier is the technical complexity of GPP combined with a low administrative capacity. Priority policy measures to overcome these barriers include triggering political commitment to GPP at the local level, enhancing specialized procurement capacities, and strengthening the provision of assistance to procurement authorities, for instance through competence centers on sustainable procurement.", "corpus_id": 236065965, "venue": "", "year": 2019, "author_names": [ "Olga Chiappinelli", "Friedemann Gruner", "Gustav Weber" ], "n_citations": 2, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "152034512", "title": "Instructional management of head teachers and its relation to teachers' commitment to teaching work Shazali Hj Rosdi", "abstract": "The purpose of this study was to determine which of the 10 leadership functionscontained in the Principal Instructional Management Rating Scale (PIMRS) as identified by Hallinger (1983) are demonstrated by the head teacher and the nine items in the Teachers' Commitment to Teaching Work (TCTW) demonstrated by teachers at three different types of primary school in the district of Kuching. The schools involve in the study are government national school, religious school, and a missionary school. A number of 150 questionnaires were distributed to the target respondents of teachers from the respective schools. The results and findings presented in this study are based on the following Research Objectives in which it meant to determine teachers' perception toward the Head Teachers' Instructional Management. The study also wishes to investigate whether the head teachers' Instructional Management role has any relation to the teachers' commitment to teaching work. Alongside, it is also expected to examine the relative importance of head teachers' Instructional Management towards teachers' commitment to teaching work. The study also sought to determine if there would be a significant difference in teachers' perceptions of the head teachers' instructional management roles as well as to investigate teachers' commitment to teaching work that will contribute to enhance student achievement and the school outcomes at large. Descriptive statistics were used to identify which instructional management functions were being demonstrated frequently by the head teachers as the instructional leader cum instructional managers at school.", "corpus_id": 152034512, "venue": "", "year": 2012, "author_names": [ "Shazali Rosdi" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "79453920", "title": "Gender disparities in appointment of primary school head teachers in Nyeri Central District in Nyeri county, Kenya", "abstract": "Gender disparities have been a critical issue in the developing countries including Kenya. Gender disparity is not limited to any specific field of life and education is no exception. Either gender should have equal access to power and resources; because women and men bring in different styles of management to education, under representation of either gender in educational management and leadership positions would have negative implications on government policies. For instance if women are under represented the girl child would lag behind in education due to lack of positive female role models. Women teachers would also lack mentors, the scenario cyclic and self perpetuating. This study investigated social cultural factors, organizational factors and personal factors that cause gender disparities in appointment of primary school head teachers in Nyeri Central District, Nyeri County. Various scholarly works that are related to factors causing gender disparities in educational management were reviewed. Descriptive survey design, utilizing a population of 538 primary school teachers was used. A sample of 34 respondents was selected by simple random sampling. The sample size was determined using the sampling formula by Nassiuma (2000) for populations whose underlying distribution is unknown. The study looked at factors such as social cultural factors, personality factors and organizational factors that tend to hinder or promote career advancement of men and women in primary school headship positions. Data was collected by use of a self scoring questionnaire consisting of 29 items that are both open and closed ended questions. Piloting was carried out in two schools which were not included in the study sample. Data was analyzed by use of the computer package, Statistical Package for Social Sciences (SPSS) The analyzed data was presented in form of frequency polygons, pie charts, bar graphs and frequency tables. The results of this study provide essential information on what can be done to make gender equity considerations a worthwhile under taking in the educational management of primary schools. Findings from this study may influence the policy makers, educationists, teachers and parents to review the current status and come up with more practical intervention to improve participation of all. The government through the Ministry of Education, the Ministry of Labour and the ministry of Gender and Development, may use these research findings in evaluating and strengthening their contribution towards policy implementation and legislation. The nation as a whole may use these research findings in tapping the human potential of either gender to the benefit of all. Administrators and managers may also use the findings of this study in making gender sensitive decisions in recommendations for appointments or in actual appointments and thus ensuring that only the very competent ascend to positions of management. Workers in the education sector may also make use the findings to boost the morale and job satisfaction once it becomes evident that all have equal chances in career advancement.", "corpus_id": 79453920, "venue": "", "year": 2012, "author_names": [ "Wairimu Esther Mukundi" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "151313301", "title": "Evaluating the use of a strengths based development tool with head teachers", "abstract": "Abstract This exploratory study investigated an educational psychologist's use of a strengths based development tool with head teachers, in the context of influencing and supporting leaders in school organisations. Nine head teachers completed the \"Realise2 Introductory Profile\" online strengths assessment and then received a structured debrief by an educational psychologist, to facilitate discussion around their individual profile. Feedback was gathered from five head teachers, using semi structured interview and a Likert type rating scale. Interviews were analysed thematically. Head teachers reported raised self awareness in terms of their realised strengths, learned behaviours, weaknesses and unrealised strengths. They noted an increased motivation and commitment to self reflection as a core practice and related this to subsequent changes in management practice, such as improving personal resilience, increased authenticity in their professional role and more effective delegation of management tasks. Organisational level outcomes reported by head teachers included increases in focus on strengths based practices, teacher well being and resilience. Personal and professional development with individual head teachers is discussed as an effective use of educational psychology resources with potential benefits for the wider organisation.", "corpus_id": 151313301, "venue": "", "year": 2017, "author_names": [ "Liz Cooper", "Kevin Woods" ], "n_citations": 3, "n_key_citations": 1, "score": 0 }, { "doc_id": "44205194", "title": "Assessing the role of School Management Committees (SMCs) in improving quality teaching and learning in Ashanti Mampong municipal basic schools", "abstract": "The study sought to assess the role of School Management Committees (SMCs) in improving quality teaching and learning in Ashanti Mampong Municipal Township Basic Junior High Schools through the views of head teachers, teachers and SMC Members. The design adopted for the study was a descriptive survey. A simple random sampling method was used to select a sample size of thirty (30) respondents. Questionnaire was used to collect (ed) data from the respondents, validated by the researchers and analyzed by the use of descriptive statistics. The findings indicated that SMCs were ineffective in the monitoring and supervision of head teachers' teacher's and pupils' attendance. Even though SMC's are not doing enough to assist teachers to improve teaching and learning, they are seen as very effective in solving school community relations since SMCs are relatively on task on the issue of serving as a vehicle for promoting community participation in the provision of quality education. Finally, it was recommended that much effort is needed to be done by SMCs in the Ashanti Mampong Municipal to raise the standard of basic education. It is hoped that the findings will serve as tools for change of practice of supervision of all stakeholders in the quality of teaching and learning in basic schools.", "corpus_id": 44205194, "venue": "", "year": 2012, "author_names": [ "Benedict Osei-Owusu", "Francis Kwame Sam" ], "n_citations": 14, "n_key_citations": 0, "score": 1 }, { "doc_id": "67792198", "title": "Organization Commitment of Public Primary School Senior Head Teachers", "abstract": "Commitment to organization is important and plays key role in the formation of an integrated human effort in an organization. The importance of organizational commitment has attracted consideration over recent years and has been reflected in many management studies. Specifically, the objective of this study was to identify the significant difference between the selected demographic variables and organizational commitment. A quantitative cross sectional research design with purposive sampling was employed in collecting data. The cross sectional survey design was used to determine the demographic variables of gender and ethnicity. The questionnaires for Organizational Commitment was originated by Mowday et al. (2003) The respondents for this study were senior public primary school head teachers who attended the three years intensive program of Bachelor Degree in Education Management. Two cohorts comprised of 107 students were chosen from 600 students who enrolled for the Head Teacher Degree Program. They were purposively selected because they represented almost equal numbers of respondents based on gender and ethnicity of the ratio of people in Malaysia. The results of the analysis revealed that organizational commitment showed no significant different between male and female. There was significant difference for organizational commitment related to ethnic of Malay, Chinese and Indian. In conclusion, the degree of commitment of the organization among senior teacher has shown the differences between the ethnics but no different between the gender. Therefore, organization need to build up the necessary efforts to encourage and enable the different ethnics to strive their strong commitment to the organization. This will enable the organization to meet future challenges and at the same time maintain employee's attachment to the organization.", "corpus_id": 67792198, "venue": "", "year": 2011, "author_names": [ "Nek Kamal Yeop Yunus", "Norlia Binti Mat Norwani", "Kamaruddin Musa" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "151119289", "title": "School leaders as agents of change a case study on how two head teachers are trying to implement the learning study method in their school", "abstract": "This paper seeks to describe and discuss the impact of inspections of schools in Sweden. It outlines the political context, based on New Public Management (NPM) theory, according to what role the S", "corpus_id": 151119289, "venue": "", "year": 2013, "author_names": [ "Mats Lundgren", "Ina von Schantz Lundgren", "Anne-Maj Kihlstrand" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "146518357", "title": "Influence of the Head Teacher's Role on Student Behavior Management in a Primary School", "abstract": "Abstract The role of head teacher as the school leader does not only deals with the academics and general administration of the school but also deals with the life world of the school which is composed of values, character, relationships behaviors and attitude. Hence it becomes imperative to know how the head teacher's role does influences behavior management of the students. To address the above stated query, a case study method has been followed with in the qualitative research paradigm. A private school head teacher was purposefully selected as study participant from the context of Gilgit Baltistan, Pakistan. The study explored that, the head teacher as the school leader has delineated a comprehensive vision and policy for student behavior management in the form of \"Six character Pillars\" The critical role of the teachers in managing the student behavior is highly valued and they are expected to be role models of good behavior. Teacher's professional development for student behavior management emerged as an area highly valued by the school leadership. In", "corpus_id": 146518357, "venue": "", "year": 2011, "author_names": [ "Hussan Perveen", "Aijaz Ahmed Gujjar" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "79699082", "title": "Influence of in service programmes on head teachers' competence in management of secondary schools in Mukaa District Kenya", "abstract": "Headteachers play a key role in achievement of educational goals and objectives in schools. The quality of schools depend largely on leadership. The purpose of this study was to investigate the influence of in service programmes on head teachers' competence in management of secondary schools in Mukaa District Kenya. The study sought to determine the influence of Kenya secondary schools heads' Annual conferences, previously held administrative positions, learning on the job, exposure to KEMI programmes, DEOs' offices administrative support of headteachers' levels of competence in administrative task areas. In addition, the study sought to establish the most and the least preferred forms leadership and management preparations. Mukaa district has 40 secondary schools according to the district education office data. The study therefore considered the head teachers of 36 secondary schools and one teacher in every school making a total of 36 teachers. Data was collected using questionnaires. The questionnaires were administered to the 36 headteachers and 36 teachers. The data was analysed using frequencies and percentages. The return rate was 100% The study found out that the headteachers are effective in curriculum implementation, fairly effective in curriculum evaluation, very effective in management of teaching staff and very effective in management of the non teaching staff. The study recommends that the in service programmes should give more emphasis on ICT related courses to cope with the emerging trends in technological form of leadership e.g. in storing of data, accounting, decision making softwares, internal and external communication systems, website maintenance with proficiency in internet and email. This study is likely to benefit the Ministry of Education particularly at the County level, who will gain more insight on the most preferred modes of management preparation. The study could also provide feedback to KEMI on headteachers' most preferred forms of preparation. Further research should be extended to all secondary school headteachers on in service programmes that enhance their competence in internal leadership roles and teaching. Factors contributing to headteachers' incompetence in school administrative tasks and in service programmes to all secondary school teachers in Kenya focusing on enhancement of their competence in future school administration, needs further research.", "corpus_id": 79699082, "venue": "", "year": 2012, "author_names": [ "Francis M Mutua" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "157065873", "title": "The Preparedness of Secondary School Head Teachers as Leaders and Managers of Schools in Kenya", "abstract": "Management practices in Kenyan Secondary schools ha ve come under scrutiny following the wave of student strikes that swept across the count ry i recent years. Over the past decade strikes in schools have been increasing phenomenall y. Several reasons have been advanced by different stakeholders as the underlying root cause s: overloaded curriculum; autocratic school administration; drug and substance abuse; poor livi ng conditions in schools; excessive use of corporal punishment; lack of an effective school gu idance and counseling services among others. The latest upsurge in violent strikes in pu blic secondary schools in 2008 brought into sharp focus the role of head teachers in the manage ment of schools in Kenya. The thrust of this study was to establish whether they are prepared to face challenges and problems that come with running these institutions. The fact that they are elevated to head schools without proper training in management practices is a cause for concern. Thi s paper posits leadership and managerial ineptitude on the part of head teachers. The study specifically sought to identify the challenges and training needs of head teachers in secondary sc hools. It also explored the availability of head teacher training and its importance in managin g schools. The data for this paper was collected through review of published and unpublish ed literature. The need to have management training for teachers' prior to promotion to the le v l of head teachers should be the focus. Background of the study According to an Afrol News report (23 rd July 2008) more than 300 secondary schools went on strike in Kenya between the months of May and Augus t 2008, resulting in the destruction of property worth millions of shillings. The report a dded that the students were protesting against poor living conditions and bad management. This study proceeds from the observation (Eshiwani, 1993; Okumbe 1999; Mutai, 2003; inter alia) that in Kenya, there are no set criteria enum erating the skills a person should possess to qualify for appointment as a head teacher. This cr eates a managerial gap in public schools since without basic managerial training, the head teacher s are less likely to be knowledgeable in elementary management practices and cannot readily grasp the provisions of the Education Act. The Education Act (1968) defines a manager as any p erson or body of persons responsible for the management of a school. The regular upsurge of unrests in schools puts the capability of head teachers in this respect in serious doubt. Al though the Act confers extensive powers on the Minister of Education over the management and regul ation of education in Kenya, the day to day running of affairs in the school falls squarely on the shoulders of head teachers. Indeed, the Act presumes that head teachers are knowledgeable in ed ucational management. The term management can be defined as the art of getting peo ple t gether to accomplish desired goals through planning, organizing, sourcing, leading or directing, and controlling for the purpose of accomplishing a goal (Lewy, 1991) This paper inten ds to show that herein lays the main", "corpus_id": 157065873, "venue": "", "year": 2010, "author_names": [ "James K Sang" ], "n_citations": 11, "n_key_citations": 2, "score": 0 }, { "doc_id": "159225230", "title": "The role of school leadership in conflict management in selected secondary shools of Chingola District", "abstract": "The fmdings showed that head teachers, D E B S and teachers understood what the term conflict management meant in the context o f the school environment. Their responses were: ability to effectively communication with teachers; approaches to control misunderstandings among teachers, students, administration and subordinate staff The causes o f conflicts were absenteeism, teachers having higher qualifications than the head teacher, late coming, incompetence on the part o f the head teacher, teachers having a negative work culture, and favoritism. The findings from the study showed that a course on conflict management should be introduced in the curricula for student teachers and that it should also be introduced as a regular refresher course for teachers and school administrators. School administration has been adversely affected by lack o f knowledge o f conflict management. Hence, most of them administrators handled conflicts by trial and error approach because there were no specific procedures and methods of managing conflicts. The findings showed that conflict management strategies commonly used were confrontation, avoidance, dialogue, charging the teacher, communication and scolding the teacher. A l l in all respondents understood the term conflict management. They too brought out causes o f conflict in schools. Though the school leadership lacked training in conflict management they had conflict strategy methods they employed in trying to solve conflict in their respective schools. In light o f the findings, the study recommended that induction of school head teachers should be mandatory and conflict management should be among the important aspects in this induction. It also recommended that courses in conflict management should be included in the curriculum for teachers in training as a way o f preparing them for conflict management in school administration.", "corpus_id": 159225230, "venue": "", "year": 2016, "author_names": [ "Kambwili Mwamba" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "139645366", "title": "Improvement in adhesion of cellulose fibers to the thermoplastic starch matrix by plasma treatment modification", "abstract": "Abstract This work deals with provision and characterization of the biopolymer based composites achieved by incorporation of cellulose fibers as the reinforcement within the glycerol plasticized matrix formed by thermoplastic cornstarch biopolymer. The function of starch based polymers is limited due to poor mechanical properties. However, it is improved with forming a biocomposite of thermoplastic starch (TPS) as matrix and the cellulose fibers (CF) as reinforcement. The surface of cellulose fibers is successfully modified using the air plasma treatment with the aim of improving the matrix/fiber adhesion. The modified fibers are studied using X ray diffraction (XRD) scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR) The TPS/CF composites are prepared using high friction and hot compression procedure. Tensile test results and SEM images of the fracture surfaces show significant improvement of adhesion between treated cellulose fibers and TPS matrix. Thermogravimetric analysis shows a considerable decomposition at approximately 250 350 degC. XRD proved the significant increase in crystallinity percentage of composites compared to TPS.", "corpus_id": 139645366, "venue": "Composites Part B: Engineering", "year": 2019, "author_names": [ "Mahyar Fazeli", "Jennifer Paola Florez", "Renata Antoun Simao" ], "n_citations": 75, "n_key_citations": 0, "score": 2 }, { "doc_id": "224990377", "title": "Modification of Thermoplastic Starch with Natural Fiber", "abstract": "", "corpus_id": 224990377, "venue": "Biofiller Reinforced Biodegradable Polymer Composites", "year": 2020, "author_names": [ "Ridhwan Jumaidin", "Nur Wardah Adam", "S M Sapuan" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "229602091", "title": "EFFECT OF ENZYMATIC MODIFICATION OF WHITE CORN FLOUR STARCH ON THE QUALITY OF BREAD FOR PATIENTS DIAGNOSED WITH CELIAC DISEASE", "abstract": "The effect of enzymes with amylolytic activity on the degree of hydrolysis of white corn flour in order to improve the quality of gluten free bread for special nutrition was studied. Starch was hydrolyzed using mushroom a amylase and glucoamylase in an amount of 0.005 and 0.03 by weight of flour, respectively. As a result, the number of sugars increased to 5.0 5.5 The optimal pH value of 4.7 for the action of enzymes was set by adding 0.065 citric acid. Hydrolysis was subjected to 50 of white corn flour from the total amount, the humidity of the hydrolyzate was 65% In addition to mono and disaccharides, the hydrolysate accumulated 3.5 on THE basis of dextrins, of which 1.3 achro and maltodextrins, reducing the degree of stale bread.", "corpus_id": 229602091, "venue": "", "year": 2020, "author_names": [ "Alina A Burnatseva", "Anna V Khmelevskaya", "A A Gazzaeva", "M I Gusalova", "I T Karaeva" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "224889168", "title": "Enzymatic Modification of Granular Potato Starch Using Isoamylase Investigation of Morphological, Physicochemical, Molecular, and Techno Functional Properties", "abstract": "", "corpus_id": 224889168, "venue": "", "year": 2020, "author_names": [ "Marco Ulbrich", "Saeed A Asiri", "Robert Bussert", "Eckhard Floter" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "226046240", "title": "Enzymatic properties of an efficient glucan branching enzyme and its potential application in starch modification.", "abstract": "Glucan branching enzymes (GBEs, EC 2.4.1.18) catalyze the formation of a 1,6 linked branch in starch, which is important for the starch modification with prospective properties. In this study, the aqGBE gene encoding an efficient glucan branching enzyme was cloned from Aquabacterium sp. strain A7 Y and successfully expressed in Escherichia coli BL21 (DE3) The specific activity of the purified recombinant enzyme rAqGBE was 2850 U/mg with potato starch as the optimal substrate, and the Km and Vmax values of rAqGBE were 1.18 mg/mL and 588.2 mmol/min/mg, respectively. Enzymological characterization showed that rAqGBE exhibits its optimal activity under the condition of 40 degC and pH 7.0, respectively, which is independent of calcium ions. Otherwise, rAqGBE treated potato starch showed different chain length distribution compared with control, the numbers of short chains (degree of polymerization, DP<7) and long chains (DP>25) increased from 4.5% to 9.6% and 6.1% to 15.7% after enzymatic treatment, respectively. In starch anti ageing assay, with minimum usage of 0.8 mg rAqGBE per g starch, the rAqGBE treated potato starch exhibited reduced retrogradation properties. Our results indicate that the branching enzyme AqGBE may therefore be a promising tool for the enzymatic modification of starch.", "corpus_id": 226046240, "venue": "Protein expression and purification", "year": 2020, "author_names": [ "Chengyao Xia", "Yan Qiao", "Chaonan Dong", "Xiaopei Chen", "Yanxin Wang", "Ding Li", "Xianfeng Ye", "Jian Han", "Yongchao Huang", "Zhong-li Cui", "Zhoukun Li" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "214412807", "title": "Surface Modification of Tapioca Starch by Using the Chemical and Enzymatic Method", "abstract": "", "corpus_id": 214412807, "venue": "", "year": 2020, "author_names": [ "Kewalee Prompiputtanapon", "Waraporn Sorndech", "Sunanta Tongta" ], "n_citations": 7, "n_key_citations": 1, "score": 1 }, { "doc_id": "149561611", "title": "THE USE OF SUNFLOWER LECITHIN IN THE TECHNOLOGY ON GLUTEN FREE BREAD WITH ENZYMATIC MODIFICATION OF FLOUR STARCH", "abstract": "The necessity of search of new ways to improve the quality of gluten free bread for people suffering from celiac disease is considered in the article. As one of the directions of this problem solution the use of surface active substances has been suggested. The efficiency of the use of sunflower skimmed lecithin for production of rice bread with the use of enzymatic modification of flour starch has been proved. Its influence on the intensity of fermentation in the rice dough, the activity of fermentative microflora and the change of specific volume in the process of maturation has been investigated. The positive influence of emulsifier in the technology of rice bread on the indicators as ready made products, in particular specific volume, porosity and elastic properties of the crumb have been studied out. It was established that the addition of sunflower skimmed lecithin to vegetable oil in the process of production of rice bread using flour starch hydrolysis promotes the extension of its shelf life and freshness.", "corpus_id": 149561611, "venue": "", "year": 2019, "author_names": [ "Iryna Medvid", "Olena Shydlovska", "Viktor Dotsenko" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "224885555", "title": "Processing and Modification of Starch into Thermoplastic Materials", "abstract": "", "corpus_id": 224885555, "venue": "", "year": 2020, "author_names": [ "Ridhwan Jumaidin", "Z A S Saidi", "S M Sapuan" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "104363969", "title": "Chemical modification of cellulose nanocrystals and their application in thermoplastic starch (TPS) and poly(3 hydroxybutyrate) (P3HB) nanocomposites", "abstract": "", "corpus_id": 104363969, "venue": "", "year": 2019, "author_names": [ "Paulo Leonardo Lima Ribeiro", "Tamiris Vilas Boas Figueiredo", "Livia Eloy Moura", "Janice Izabel Druzian" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "182159533", "title": "Enzymatic Modification of Granular Potato Starch Effect of Debranching on Morphological, Molecular, and Functional Properties", "abstract": "", "corpus_id": 182159533, "venue": "Starch Starke", "year": 2019, "author_names": [ "Saeed A Asiri", "Eckhard Floter", "Marco Ulbrich" ], "n_citations": 5, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "202351692", "title": "In pursuit of an effective B2B digital marketing strategy in an emerging market", "abstract": "In business markets, firms operating in developing economies deal with burgeoning use of the internet, new electronic purchase methods, and a wide range of social media and online sales platforms. However, marketers are unclear about the pattern of influence of firm initiated (i.e. paid media, owned media, and digital inbound marketing) and market initiated (i.e. earned social media and organic search) digital communications on B2B sales and customer acquisition. We develop and test a model of digital echoverse in an emerging market B2B context, using vector autoregressive modeling to analyze a unique 132 week dataset from a Brazilian hub firm operating in the marketplace. We find empirical evidence supporting our conceptual framework in emerging markets. Underscoring the importance of a market development approach for emerging markets, the findings show that owned media and digital inbound marketing play a bigger role in influencing customer acquisition. Impressions generated through earned social media complement owned media, but not paid media. These insights highlight the notion that while sources of digital echoverse may remain the same across countries, its components exert a particular pattern of influence in an emerging market context. This is expected to encourage managers to rethink their digital strategies for B2B customer acquisition and sales enhancement while operating in emerging markets.", "corpus_id": 202351692, "venue": "Journal of the Academy of Marketing Science", "year": 2019, "author_names": [ "Valter Afonso Vieira", "Marcos Inacio Severo de Almeida", "Raj Agnihotri", "Noga Simoes De Arruda Correa da Silva", "S Arunachalam" ], "n_citations": 30, "n_key_citations": 3, "score": 0 }, { "doc_id": "169768551", "title": "Digital Marketing Strategies Based on the E Business Model: Literature Review and Future Directions", "abstract": "One of the most significant changes in the last decade in the business environment has been caused by the development of information technologies and the internet. The internal structure and organization of companies has changed to evolve towards a digital environment influenced by internet business models and digital marketing (DM) techniques. This chapter develops a systematic literature review with the objective of identifying the key players in the business environment with respect to the new business models and digital marketing techniques applied to them, to improve the benefits they bring to the company. The results of the research identify and define the main actors of the electronic commerce (EC) ecosystem, as well as their typologies and the main techniques of DM used in this field of research. The results of the exploratory study can be used for future research in this field and to reinforce the reference bibliography in this area of research.", "corpus_id": 169768551, "venue": "", "year": 2019, "author_names": [ "Jose Ramon Saura", "Pedro R Palos-Sanchez", "Marisol B Correia" ], "n_citations": 29, "n_key_citations": 1, "score": 1 }, { "doc_id": "195881561", "title": "Towards the Adoption of Machine Learning Based Analytical Tools in Digital Marketing", "abstract": "Exponential technological expansion creates opportunities for competitive advantage by applying new data oriented approaches to digital marketing practices. Machine learning (ML) can predict future developments and support decision making by extracting insights from large amounts of generated data. This functionality greatly impacts and streamlines the strategic decision making process of organizations. The research gap analysis revealed that a little is known about marketers' attitude toward, and knowledge about, ML tools and their adoption and utilization to support strategic and operational management. The research presented here focuses on the selection and adoption of the ML driven analytical tools by three distinct groups: marketing agencies, media companies, and advertisers. Qualitative and quantitative research was conducted on a sample of these organizations operating in Slovakia. The findings highlight: 1) the important role of intelligent analytical tools in the creation and deployment of marketing strategies; 2) the lack of knowledge about emerging technologies, such as ML and artificial intelligence (AI) 3) the potential application of the ML tools in marketing, and; 4) the low level of adoption and utilization of the ML driven analytical tools in marketing management. A framework consisting of enablers and a process map was developed to help organizations identify the opportunities and successfully execute projects that are oriented toward the deployment and adoption of the analytical ML tools in digital marketing.", "corpus_id": 195881561, "venue": "IEEE Access", "year": 2019, "author_names": [ "Andrej Miklosik", "Martin Kuchta", "Nina Evans", "Stefan Zak" ], "n_citations": 22, "n_key_citations": 2, "score": 0 }, { "doc_id": "196201625", "title": "Digital Marketing Actions That Achieve a Better Attraction and Loyalty of Users: An Analytical Study", "abstract": "Currently, the digital economy contributes decisively to an increase in competitiveness, especially as a digital transformation involves migrating to new technological models where digital marketing is a key part of growth and user loyalty strategies. Internet and Digital Marketing have become important factors in campaigns, which attract and retain Internet users. This study aims to identify the main ways in which users can be gained and retained by using Digital Marketing. The Delphi method with in depth interviews was the methodology used in this study. The results of the research show the most important actions for achieving user recruitment and loyalty with Digital Marketing from the opinions of consulted experts. The limitations of this study are those related to the number of experts included in the study, and the number of research papers consulted in the literature review. The literature review and the results of this research are used to propose new solid research with a consolidated critical methodology. This research deals with a new approach that will optimize web technologies for the evolution of user trends, and therefore, will be of academic and professional use for marketing managers and web solution developers. The conclusions of the investigation show the key factors, discarding others that do not affect the optimization of conversions in B2C businesses such as the duration of the session and the rebound percentage. Likewise, the results of the research identify the specific actions that must be carried out to attract and retain users in B2C companies that use the Digital Marketing ecosystem on the Internet. The requirements for companies that wish to implement a model to optimize conversions using the current digital economy are also shown.", "corpus_id": 196201625, "venue": "Future Internet", "year": 2019, "author_names": [ "Juan Jose Lopez Garcia", "David Lizcano", "Celia Maria Quiterio Ramos", "Nelson Matos" ], "n_citations": 20, "n_key_citations": 0, "score": 0 }, { "doc_id": "52093413", "title": "Digital marketing strategies, online reviews and hotel performance", "abstract": "Abstract We investigate to what extent digital marketing strategies (such as having a digital marketing plan, responsiveness to guest reviews, and monitoring and tracking online review information) influence hotel room occupancy and RevPar directly, and indirectly through the mediating effect of the volume and valence of online reviews they lead to, and to what extent this mechanism is different for different types of hotels in terms of star rating and independent versus chain hotels. The research was carried out in 132 Belgian hotels. The results indicate that review volume drives room occupancy and review valence impacts RevPar. Digital marketing strategies and tactics affect both the volume and valence of online reviews and, indirectly, hotel performance. This is more outspoken in chain hotels than in independent hotels, and in higher star hotels than in lower tier hotels.", "corpus_id": 52093413, "venue": "", "year": 2018, "author_names": [ "Patrick De Pelsmacker", "Sophie van Tilburg", "Christian Holthof" ], "n_citations": 114, "n_key_citations": 3, "score": 1 }, { "doc_id": "169881241", "title": "Digital marketing adoption and success for small businesses", "abstract": "Purpose This paper aims to examine small business' participation in digital marketing and to integrate the do it yourself (DIY) behavior model and technology acceptance model (TAM) so as to explore the motivations and expected outcomes of such participation. Design/methodology/approach Data from 250 small business owners/managers who do their own digital promotion are collected through an online survey. Structural equation modeling is used to analyze the relationships between the models. Findings The results contribute to the understanding of small business' digital marketing behavior by finding support for the idea that the technological benefits may not be the only motivators for small business owner/managers who undertake digital marketing. Moreover, and perhaps more importantly, the authors find that the DIY behavior model applies to small business owner/managers who must perform tasks that require specialized knowledge. Research limitations/implications The limitations of this research are that the motivations to undertake digital marketing are limited to those contained in the DIY and TAM models, and the sample may not be representative of all owners and managers who perform digital marketing for their small businesses. Therefore, future research is needed to determine if further motivations to conduct digital marketing exist and whether other samples produce the same interpretations. Originality/value This study presents empirical evidence supporting the application of the DIY model to a context outside of home repair and extends the understanding of digital footprint differences between large and small businesses.", "corpus_id": 169881241, "venue": "Journal of Research in Interactive Marketing", "year": 2019, "author_names": [ "Wendy Ritz", "Marco Wolf", "Shaun McQuitty" ], "n_citations": 20, "n_key_citations": 1, "score": 0 }, { "doc_id": "174800658", "title": "Marketing Intelligence and Big Data: Digital Marketing Techniques on their Way to Becoming Social Engineering Techniques in Marketing", "abstract": "This contribution reviews the vast scope of digital application areas, which shape the digital marketing landscape and coin the present term \"marketing intelligence\" from a marketing technique point of view. Additionally, marketing intelligence as social engineering techniques are described. The review ranges from digital IT and big data marketing until marketing 5.0 as digitalized trust marketing. The multiplicity of applications and interdependencies of the digital and social techniques reviewed should show that big data and marketing intelligence have already become a marketing reality. It becomes clear that marketing is witnessing a methodological, technical and cultural paradigm shift that augments and amplifies traditional outbound marketing with inbound marketing.", "corpus_id": 174800658, "venue": "Int. J. Interact. Multim. Artif. Intell.", "year": 2019, "author_names": [ "Jan Lies" ], "n_citations": 25, "n_key_citations": 2, "score": 0 }, { "doc_id": "195479059", "title": "Older Consumers, Digital Marketing, and Public Policy: A Review and Research Agenda", "abstract": "Addressing the challenges created by rapidly aging populations is a topic of intense interest for marketers, policy makers, and researchers. However, relatively little research has been undertaken into the ways older consumers are adopting or rejecting new digital technologies. Given the shifting economic power and growing digital adoption rates among older consumers, understanding how they adopt technology and use digital channels is becoming increasingly important to marketers. For marketers and policy makers to fully understand the future shape of a data driven digital society, research must take more account of its influence across different older generational cohorts. This article focuses on identifying research gaps across key digital marketing areas in relation to older age consumers' adoption and use of digital technology. Through a multidisciplinary review of the literature on aging, using the theoretical lens of generational cohorts, the authors identify key research challenges, opportunities, and implications for both marketers and policy makers.", "corpus_id": 195479059, "venue": "Journal of Public Policy Marketing", "year": 2019, "author_names": [ "Daniel Nunan", "Marialaura Di Domenico" ], "n_citations": 14, "n_key_citations": 0, "score": 0 }, { "doc_id": "169852611", "title": "ASSESSMENT OF TRENDS IN THE APPLICATION OF DIGITAL MARKETING", "abstract": "One of the conditions for the future development of companies is the identification and use of digital capabilities. In recent years, the environment in which we live and work has changed radically. If the emergence of the Internet was revolutionary in the way we communicate and obtain information, currently the availability and mobility of technologies affects consumers' habits and promotes the transformation of classic business models. Aim of the study: to explore and learn about the development trends of digital marketing. Applied research methods: monographic descriptive method, analysis, synthesis, statistical method. The study based on scientific publications, statistics and other sources of information. The results of the study show that in 2019 digital marketing tools are most actively used: artificial intelligence augmented reality machine learning; video marketing; chatbots, virtual assistants.", "corpus_id": 169852611, "venue": "Scientific Journal of Polonia University", "year": 2019, "author_names": [ "Inta Kotane", "Daina Znotina", "Serhii Hushko" ], "n_citations": 8, "n_key_citations": 0, "score": 0 }, { "doc_id": "182307182", "title": "Research Challenges in Digital Marketing: Sustainability", "abstract": "Great progress has been made in the field of marketing and sustainability. Nevertheless, there is still an important gap between the behavior and beliefs of society and markets about sustainability, and companies' capability to understand and face this trend. Digital marketing is key to filling this gap. However, research in digital marketing and sustainability is very scarce. The purpose of this research is to examine the literature in the subject, since 2009 until 2018, and to elaborate a research agenda about digital marketing and sustainability. Through a previous analysis based on bibliometrics, a research agenda has been developed that shows the main challenges for the digital marketing and sustainability field: (1) customer orientation and value proposition; (2) digital consumer's behavior; (3) digital green marketing; (4) competitive advantage; (5) supply chain; and (6) capabilities. This work contributes to the development of the research in digital marketing and sustainability, suggesting various challenges for the field that lead to future lines of research, and favoring the development of a new research approach capable of reducing the existing gap between society and business on sustainability issues.", "corpus_id": 182307182, "venue": "Sustainability", "year": 2019, "author_names": [ "Francisco Diez-Martin", "Alicia Blanco-Gonzalez", "Camilo Prado-Roman" ], "n_citations": 15, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "169359586", "title": "Sustainability in Sport Tourism Education Theoretical Impact and the Tourism Sector Reality", "abstract": "The rise of new tourism forms has dominated the last two decades matching a dramatically segmented market, thus answering to the minor of niches met in the new tourism era. Sport tourism has concentrated great theoretical attention since it manages to synthesise two major social leisure expressions that of sport and tourism. This tourism development suggested a vivid sustainable character emphasised in the vast majority of theoretical approaches. Still, sport tourism education failed to effectively incorporate sustainability as a core course module, focusing rather on traditional operational outlines, thus limiting the building of green conscious and applicable industry skills in the tourism management scene. The present analysis through a systematic review provides a range of approaches to assist in the difficult task of mapping a sustainable sports tourism outline, not only in terms of the course structure, but also in terms of the relationship between the course and its evolving tourism environment. The examination of existing theoretical paradigms aims to produce generalizable fields of academic education leading to well skilled sustainability minded sport tourism professionals.", "corpus_id": 169359586, "venue": "", "year": 2018, "author_names": [ "Ourania Vrondou", "Panagiotis E Dimitropoulos", "Yiannis Douvis", "Vasiliki Avgerinou" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "55025356", "title": "A multidisciplinary approach to sport tourism education in a digital era", "abstract": "Sport tourism has enjoyed a plethora of definitional and theoretical perspectives over the last three decades proposing a dynamic alternative to mass tourism with specific structural features and modus operandi. However, studies examining or suggesting the basic body of knowledge that would satisfy the educational needs of participants in this complex tourism form are lacking. The present study through an analysis of the involved conceptual fields aims to minor the gap between theoretical support and direction for tourism academics and the realistic skills needed by the sport tourism industry. The main focus of the study is to provide a theoretical platform based on the available paradigms that would facilitate the build of sport tourism related curriculums. The study embraces an analysis of available secondary sources, academic course outlines, official university's sites, policy declarations, etc. and parallels theoretical models to produce the basic thematic dimensions of a relevant conceptual framework. Hopefully, the result will offer a vision on the further development of sport tourism education to meet the needs of one of the most promising leisure forms.", "corpus_id": 55025356, "venue": "", "year": 2017, "author_names": [ "Ourania Vrondou", "Vicky Katsoni" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "58300494", "title": "Trends and research issues of mobile learning studies in hospitality, leisure, sport and tourism education: a review of academic publications from 2002 to 2017", "abstract": "ABSTRACT Based on the Technology based Learning model, the present study reviews the published papers on mobile technologies in Hospitality, Leisure, Sport and Tourism (HLST) education in the Scopus database from 2002 to 2017. Various dimensions, including application domains, research issues, research sample groups, research methods, adopted technologies, and learning strategies are taken into account. It was found that, since 2010, the research issues of mobile technology supported HLST education have become increasingly diverse. Most of the studies investigated learners' affect issues, while there was also a focus on learners' attitudes, motivation and learning experiences. Moreover, wireless Internet locating (e.g. Bluetooth or Zigbee) was adopted more frequently in mobile technology supported HLST education, while sensing technologies were seldom adopted. As for mobile devices, with the development of technologies, smart phones and tablet computers became the main devices. In addition, such extensively adopted mobile learning strategies as synchronous sharing, issue based discussion, computers as mindtools, and game based learning were not adopted in the studies, indicating that most previous studies focused more on learners' learning perceptions, knowledge delivery and skills training, while less effort has been made to cultivate learners' higher order thinking, such as problem solving, critical thinking and collaborative competences. Accordingly, potential research issues and practitioner notes of mobile technology supported HLST education are proposed as a reference for researchers, teachers and decision makers.", "corpus_id": 58300494, "venue": "Interact. Learn. Environ.", "year": 2020, "author_names": [ "Yun-Fang Tu", "Gwo-Jen Hwang" ], "n_citations": 7, "n_key_citations": 0, "score": 1 }, { "doc_id": "225433624", "title": "Sports Teacher Perception about Lake Sipin Sport Tourism Area in Jambi City", "abstract": "Purpose: This study aims to determine the perception of sports teachers about the Sipin Lake area which is used as Sport Tourism in Jambi City. Because making an object in an area that can be used as a sports area and a place of tourism can boost various fields, like in the field of sports, tourism, and education. Methodology: Using Mixed Methods. Where, the number of samples in this study was as many as 108 teachers who were around the area of Lake Sipin Sport Tourism in Jambi City using the Purposive Sampling technique. The instruments used were teacher perception questionnaire and semi structured interviews. Data were then analyzed with the help of the SPSS 21 application to find descriptive statistics in the form of Mean, Min, Max, and category, and use interviews and documentation to strengthen the quantitative data that have been obtained through the questionnaire provided. Findings: The results of this study found that teachers have good perception, which is indicated by a dominant good result of 68.2% teachers, according to them by making Lake Sipin a Sport Tourism area will make students motivated to become rowing athletes who can make the school name even the region. Contribution and Recommendation: This research contributes to all elements, both sports, tourism, and education, by making the Sipin Lake object as sport tourism.", "corpus_id": 225433624, "venue": "", "year": 2020, "author_names": [ "Ugi Nugraha", "Moch Asmawi", "Hidayat Humaid", "Firmansyah Dlis" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "216188873", "title": "A feasibility study for establishing a sports stadium to stimulate sport tourism in Luxor Governorate", "abstract": "The research aims toKnowing the current status of the sports facilities in Luxor, The role of officials in stimulating sport tourism in Luxor, The importance of establishing a sports stadium and its effect on stimulating sport tourism and the target audience for its establishment, The capabilities required to establish a sports stadium in Luxor Governorate, Reaching a feasibility study to establish a sports stadium to stimulate sports tourism in Luxor including (technical feasibility study financial feasibility marketing feasibility social feasibility legal feasibility) the researcher applied the descriptive survey method, and the research was applied to a sample individuals including (officials and workers in the Ministry of Youth and Sports officials and workers in the Ministry of Tourism some academic professors in the colleges of physical education and colleges of tourism and hotels) and the researcher used two questionnaire forms where the first questionnaire is for the exploratory study, and the second one is for the feasibility study, Statistical processing: The researcher used statistical processes appropriate to the nature of the research, In light of the research results, it is recommended Inclusion of a Department of Faculties of Physical Education, Tourism and Hotels to prepare specialized human cadres in the field of sports tourism", "corpus_id": 216188873, "venue": "", "year": 2020, "author_names": [ "rehab amin osman" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "224820186", "title": "Global Communication Competence: a Framework of Intercultural Skills Development in Sport and Tourism Higher Education", "abstract": "Purpose. The research aims at multi faceted study of global communication competence, which is a vital soft skill for professional development of students, acquiring their degrees in sport and tourism. Materials and methods. Qualitative research methods applied in the research include theoretical analysis of relevant scientific findings, synthesis and modelling, pedagogical observation and evaluation. Quantitative analysis relates to questioning and data processing, in particular, 50 question Intercultural Quiz, conducted among 352 students of NUUPES and NUFT. Results. The conducted research of global communication competence of the first and fifth year university sport and tourism students shows clear correlation between the level of education and gained global communication expertise, presented by the communicative skills of critical thinking and cooperation. The analysis of statistic data has proved that along with improved self awareness, disciplines more than doubled students' global communication competence within five academic years. In addition to quantitative improvement, the quality of the intercultural communication is enhanced, as essential professional skills are gained in the sphere of students' future occupation. Professional orientation of global communication competence outlines sportive and medical inclination of NUUPES students' higher education, and tourism and hospitality focus of NUFT students' training. Conclusions. The results of the study have proven that contemporary university students who get degrees in the fields of sport and tourism perceive culturally bound information when attending their on line and off line academic courses and participating in various multicultural events in and outside university setting. In this way they acquire attitudes and values of self awareness and recognition of ethnical diversity. Established values transform into production and result in implementation of culturally aware behaviour, represented by a high level of self evaluation and persuasion abilities directed to effective, yet tolerant way of problem solving and shared responsibility.", "corpus_id": 224820186, "venue": "", "year": 2020, "author_names": [ "Halyna Lukianets", "Tetiana Lukianets" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "73588696", "title": "Sport Tourism Interests in the Light of all the Interests of Physical Education Students in the Selected Academies in Poland", "abstract": "Sport Tourism Interests in the Light of all the Interests of Physical Education Students in the Selected Academies in Poland Introduction. Children's and youth's interests are of great importance in the view of pedagogical science. It is an element of a human's personality which makes people take action and for endeavours to achieve particular aims. Material and methods. The method applied in the research was the diagnostic survey based on a questionnaire. The questionnaire used in the research was the Springer's Interests Questionnaire adopted by Cekiera and an open question like 'What are your interests? The survey was conducted in Academic Year 2008/2009 among 667 first year physical education students of the first level of full time studies in eight academies in Poland. Results. The conducted survey indicates that, among all the first year physical education students' interests, there is a clear tendency for students to be interested in sport and tourism. The majority of respondents tends to be interested only in sport and tourism, they are defined as one track mind students, and this can be proven through their deep and extensive knowledge in these subjects. The factors that significantly influence and differentiate the statistics of the survey were: sex, social background and place of residence. However, the type of school finished does not have an impact on the result of the survey since there is no connection between the finished school and interests. Conclusion. Owing to the fact that the majority of respondents definitely show a one track mind interest in sport tourism and care education, it can be suggested that they tend to have the right qualities to be teachers of physical education.", "corpus_id": 73588696, "venue": "", "year": 2012, "author_names": [ "Anna Brojek", "Anna Bochenek" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "59058289", "title": "Sports events as a determinant of sport tourism", "abstract": "Article statistics: Word count: 2,517; Tables: 2; Figures: 2; References: 28 Received: February 2017; Accepted: September 2017; Published: March 2018 Full text PDF: http:/www.balticsportscience.com Copyright (c) Gdansk University of Physical Education and Sport, Poland Indexation: Celdes, Clarivate Analytics Emerging Sources Citation Index (ESCI) CNKI Scholar (China National Knowledge Infrastructure) CNPIEC, De Gruyter IBR (International Bibliography of Reviews of Scholarly Literature in the Humanities and Social Sciences) De Gruyter IBZ (International Bibliography of Periodical Literature in the Humanities and Social Sciences) DOAJ, EBSCO Central Eastern European Academic Source, EBSCO SPORTDiscus, EBSCO Discovery Service, Google Scholar, Index Copernicus, J Gate, Naviga (Softweco, Primo Central (ExLibris) ProQuest Family Health, ProQuest Health Medical Complete, ProQuest Illustrata: Health Sciences, ProQuest Nursing Allied Health Source, Summon (Serials Solutions/ProQuest, TDOne (TDNet) Ulrich's Periodicals Directory/ulrichsweb, WorldCat (OCLC) Funding: This research received no specific grant from any funding agency in the public, commercial, or not for profit sectors. Conflict of interests: Authors have declared that no competing interest exists. Corresponding author: Prof. nadzw. dr hab. Wojciech Ratkowski, Gdansk University of Physical Education and Sport, Faculty of Tourism and Recreation; ul. K. Gorskiego 1 80 336 Gdansk; e mail: wojciech.ratkowski@awfis.gda.pl Open Access License: This is an open access article distributed under the terms of the Creative Commons Attribution Non commercial 4.0 International (http:/creativecommons.org/licenses/by nc/4.0/ which permits use, distribution, and reproduction in any medium, provided the original work is properly cited, the use is non commercial and is otherwise in compliance with the license. Authors' Contribution: A Study Design B Data Collection C Statistical Analysis D Data Interpretation E Manuscript Preparation F Literature Search G Funds Collection Baltic Journal of Health and Physical Activity 2018; 10(1) 86 94 Journal of Gdansk University of Physical Education and Sport e ISSN 2080 9999", "corpus_id": 59058289, "venue": "", "year": 2018, "author_names": [ "Wojciech Ratkowski", "Jadwiga Ratkowska" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "213877858", "title": "Report on a visit to the Russian State University of Physical Education, Sport, Youth and Tourism", "abstract": "", "corpus_id": 213877858, "venue": "", "year": 2019, "author_names": [ "Sasa Pisot" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "169962842", "title": "The Organization of Sport Tourism of the Volyn Regional Centre of Tourism, Sports and Travelling Tours", "abstract": "The article deals with an overall analysis of legislative documents, research and methodological literature, the reports of the regional Centre of Tourism, Sports an Travelling tours as well as the published materials related to the out of school activities in the Volyn Region. Under consideration are state level regulatory aspects of the tourism ethnography job in out of school institutions of Ukraine. The job in the field of Sport Tourism of Ukraine is headed by the Ukrainian State Centre of Tourism and Ethnography. This company serves the interests of the schoolchildren And is subordinated to the Ministry of Education and Science. The Centre of Tourism, Sports and Travelling Tours (functioning in the framework of the Volyn State Administration) is the most important out of school institution and coordinator of the tourist ethnographic work in Volyn Region and one of the most prominent agencies in the fields of tourism for Ukrainian children and adolescents. Of great importance for the development of sport tourism and ethnography in Volyn region is the interest clubs operating in the Regional Centre of Sports and Travelling Tours. The number of those interest clubs and hobby groups is fairly considerable. The replies of the respondents of a poll demonstrate the children's participation in different sport tourists clubs of Volyn Region with the emphasis on a specific variety of tourism. The article contains the analysis of the major professional fields of the Agency: sport orienteering; sport tourists; geographic ethnography; geological ethnography; project of sport orienteering; project <A Wandering Mr.Know All> the project of <Tourism for Everyone> Young Tourists as Ethnographers; historical Ethnography. The natural environment and resources of the Volyn region are quite propitious for the development of the touristethnographic and sport tourist activity of the young people. The region offers very good opportunities for arranging walking and hiking tours, contests and just a recreation in the lap of nature. The contents of the activities of a typical interest club have been studied (the focus is on its resources and conditions) The task of our research is to analyze the peculiarities of the job of the tourist society as well as the problems it may face with. The accumulated knowledge, experience, the adequate organization and careful planning of the Centre's job will make it possible to upgrade the training the tourist staff, encourage the schoolchildren to participate in large scale tourist events, contests, travelling tours.", "corpus_id": 169962842, "venue": "", "year": 2017, "author_names": [ "Olena Demyanchuk", "Iryna Erko", "Ninel Matskevych", "Vasyl Voitovych" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "85514913", "title": "Observer Based Event Triggered Control for Networked Linear Systems Subject to Denial of Service Attacks", "abstract": "This paper is concerned with the observer based event triggered control for a continuous networked linear system subject to denial of service (DoS) attacks, where the attacks are launched periodically to block the data transmission in control channels. First, a new observer state based resilient event triggering scheme is developed in the presence of DoS attacks. Second, a novel event based switched system model is established by considering the effect of the event triggering scheme and DoS attacks simultaneously. By virtue of this new model combined with a piecewise Lyapunov Krasovskii functional method, the sufficient conditions are derived to guarantee exponential stability of the resulting switched system. It is shown that the proposed results can establish a quantitative relationship among the launching/sleeping periods of the attacks, the event triggering parameters, the sampling period, and the exponential decay rate. Third, criteria for designing a desired observer based event triggered controller are provided and expressed in terms of a set of linear matrix inequalities. Finally, an offshore structure model is presented to illustrate the efficiency of the developed control method.", "corpus_id": 85514913, "venue": "IEEE Transactions on Cybernetics", "year": 2020, "author_names": [ "Songlin Hu", "Dong Yue", "Qinglong Han", "Xiangpeng Xie", "Xiaoli Chen", "Chun-xia Dou" ], "n_citations": 58, "n_key_citations": 1, "score": 0 }, { "doc_id": "214784341", "title": "Adaptive event triggered control for a class of nonlinear systems with periodic disturbances", "abstract": "This paper investigates the adaptive event triggered control problem for a class of nonlinear systems subject to periodic disturbances. To reduce the communication burden, a reliable relative threshold strategy is proposed. Fourier series expansion and radial basis function neural network are combined into a function approximator to model suitable time varying disturbed function of known periods in strict feedback systems. By combining the Lyapunov stability theory and the backstepping technique, the proposed adaptive control approach ensures that all the signals in the closed loop system are bounded, and the tracking error can be regulated to a compact set around zero in finite time. Finally, simulation results are presented to verify the effectiveness of the theoretical results.", "corpus_id": 214784341, "venue": "Science China Information Sciences", "year": 2020, "author_names": [ "Hui Ma", "Hongyi Li", "Renquan Lu", "Tingwen Huang" ], "n_citations": 73, "n_key_citations": 0, "score": 1 }, { "doc_id": "127129128", "title": "Secure Cooperative Event Triggered Control of Linear Multiagent Systems Under DoS Attacks", "abstract": "This paper studies secure cooperative event triggered control of linear multiagent systems under denial of service (DoS) attacks. The DoS attacks refer to interruptions of communication channels carried out by an intelligent adversary. We consider a class of time sequence based DoS attacks allowed to occur aperiodically. Then, an explicit analysis of the frequency and duration of DoS attacks is investigated for both secure leaderless and leader following consensus problems. A resilient cooperative event triggered control scheme is developed and scheduling of controller updating times is determined in the presence of DoS attacks. It is shown that based on the proposed distributed algorithms, all the agents can achieve secure consensus exponentially. The effectiveness of the developed methods is illustrated through three case studies: 1) multiple robot coordination; 2) distributed voltage regulation of power networks; and 3) distributed cooperative control of unstable dynamic systems.", "corpus_id": 127129128, "venue": "IEEE Transactions on Control Systems Technology", "year": 2020, "author_names": [ "Zhi Feng", "Guoqiang Hu" ], "n_citations": 47, "n_key_citations": 3, "score": 1 }, { "doc_id": "216312785", "title": "Consensus of multi agent systems via fully distributed event triggered control", "abstract": "Abstract This article studies consensus of linear multi agent systems (MASs) on undirected graphs. An adaptive event triggering protocol is constructed for consensus control by using relative information between agents. Sufficient conditions are established for consensus of linear MASs without and with external disturbances, respectively. Zeno behavior is proved to be excluded. Moreover, a self triggered realization based on sampled information is formulated for the protocol. Since the proposed protocol incorporates both adaptive control and event triggered control, it can be implemented in a fully distributed way and only makes use of the sampled relative information between neighboring agents. Two numerical examples are finally provided for demonstrating the effectiveness and advantages of the theoretical results.", "corpus_id": 216312785, "venue": "Autom.", "year": 2020, "author_names": [ "Xianwei Li", "Yang Tang", "Hamid Reza Karimi" ], "n_citations": 25, "n_key_citations": 1, "score": 1 }, { "doc_id": "189816414", "title": "Robust Event Triggered Control Invariance of Probabilistic Boolean Control Networks", "abstract": "In this brief, the robust control invariance problem of probabilistic Boolean control networks (PBCNs) is investigated by a class of event triggered control (ETC) which is an intermittent control scheme in essential. By resorting to the semi tensor product (STP) technique, a PBCN with ETC can be equivalently described in a form of an algebraic linear system. Based on which, a matrix testing condition is derived to judge whether the given set can be a robust ETC invariant set (RETCIS) Subsequently, a necessary and sufficient condition is developed for the existence of event triggered controllers. Meanwhile, all feasible event triggered controllers are designed for guaranteeing the given set to be an RETCIS. Finally, a biological example is employed to demonstrate the availability of theoretical results.", "corpus_id": 189816414, "venue": "IEEE Transactions on Neural Networks and Learning Systems", "year": 2020, "author_names": [ "Lin Lin", "Jinde Cao", "Leszek Rutkowski" ], "n_citations": 19, "n_key_citations": 0, "score": 0 }, { "doc_id": "219035236", "title": "Switching Like Event Triggered Control for Networked Control Systems Under Malicious Denial of Service Attacks", "abstract": "This article investigates the switching like event triggered control for networked control systems (NCSs) under the malicious denial of service (DoS) attacks. First, by dividing the DoS attacks into S interval (DoS free case) and D interval (DoS case) a switching like event triggered communication scheme (SETC) is well designed to deal with intermittent DoS attacks to improve communication efficiency while keeping the desired control performance. Second, by considering the SETC and NCSs into a unified framework, the studied system is transferred into a time delay system. Then, under the constraint of the number of maximum allowable data dropouts induced by DoS attacks, a stability criterion and a stabilization criterion are derived, which can be used to estimate the event triggered communication parameters and obtain the security controller gain simultaneously. Moreover, the derived stabilization criterion can also provide a tradeoff to balance communication efficiency and $H_{\\infty control performance. At last, a networked invert pendulum on a cart is conducted to show the effectiveness of the proposed method.", "corpus_id": 219035236, "venue": "IEEE Transactions on Automatic Control", "year": 2020, "author_names": [ "Chen Peng", "Hongtao Sun" ], "n_citations": 28, "n_key_citations": 0, "score": 1 }, { "doc_id": "149949872", "title": "Adaptive Event Triggered Control of Nonlinear Systems With Controller and Parameter Estimator Triggering", "abstract": "In this note, the event triggered adaptive control for a class of uncertain nonlinear systems is considered. Unlike the traditional adaptive event triggered control, the controller and parameter estimator are event triggered simultaneously. Asymptotical convergence of stabilization error is guaranteed. To solve this problem, we design a set of event triggering conditions, which is updated for each triggering. At the same time, the input to state stable assumption is not needed. It is shown that the proposed control schemes guarantee that all the closed loop signals are globally bounded and the stabilization error converges to the origin asymptotically. Simulation results illustrate the effectiveness of our scheme.", "corpus_id": 149949872, "venue": "IEEE Transactions on Automatic Control", "year": 2020, "author_names": [ "Jiangshuai Huang", "Wei Wang", "Changyun Wen", "Guoqi Li" ], "n_citations": 28, "n_key_citations": 0, "score": 0 }, { "doc_id": "150384743", "title": "Periodic Event Triggered Control for Nonlinear Networked Control Systems", "abstract": "Periodic event triggered control (PETC) is an appealing paradigm for the implementation of controllers on platforms with limited communication resources, a typical example being networked control systems. In PETC, transmissions over the communication channel are triggered by an event generator, which depends solely on the available plant and controller data and is only evaluated at given sampling instants to enable its digital implementation. In this paper, we consider the general scenario, where the controller communicates with the plant via multiple decoupled networks. Each network may contain multiple nodes, in which case a dedicated protocol is used to schedule transmissions among these nodes. The transmission instants over the networks are asynchronous and generated by local event generators. At given sampling instants, the local event generator evaluates a rule, which only involves the measurements and the control inputs available locally, to decide whether a transmission is needed over the considered network. Following the emulation approach, we show how to design local triggering generators to ensure input to state stability and \\mathcal {L}_p$ stability for the overall system based on a continuous time output feedback controller that robustly stabilizes the network free system. The method is applied to a class of Lipschitz nonlinear systems, for which we formulate the design conditions as linear matrix inequalities. The effectiveness of the scheme is illustrated via simulations of a nonlinear example.", "corpus_id": 150384743, "venue": "IEEE Transactions on Automatic Control", "year": 2020, "author_names": [ "Wei Wang", "Romain Postoyan", "Dragan Nesic", "W P M H Heemels" ], "n_citations": 24, "n_key_citations": 0, "score": 0 }, { "doc_id": "198135450", "title": "Adaptive Neural Event Triggered Control for Discrete Time Strict Feedback Nonlinear Systems", "abstract": "This paper proposes a novel event triggered (ET) adaptive neural control scheme for a class of discrete time nonlinear systems in a strict feedback form. In the proposed scheme, the ideal control input is derived in a recursive design process, which relies on system states only and is unrelated to virtual control laws. In this case, the high order neural networks (NNs) are used to approximate the ideal control input (but not the virtual control laws) and then the corresponding adaptive neural controller is developed under the ET mechanism. A modified NN weight updating law, nonperiodically tuned at triggering instants, is designed to guarantee the uniformly ultimate boundedness (UUB) of NN weight estimates for all sampling times. In virtue of the bounded NN weight estimates and a dead zone operator, the ET condition together with an adaptive ET threshold coefficient is constructed to guarantee the UUB of the closed loop networked control system through the Lyapunov stability theory, thereby largely easing the network communication load. The proposed ET condition is easy to implement because of the avoidance of: 1) the use of the intermediate ET conditions in the backstepping procedure; 2) the computation of virtual control laws; and 3) the redundant triggering of events when the system states converge to a desired region. The validity of the presented scheme is demonstrated by simulation results.", "corpus_id": 198135450, "venue": "IEEE Transactions on Cybernetics", "year": 2020, "author_names": [ "Min Wang", "Zidong Wang", "Y J Chen", "Weiguo Sheng" ], "n_citations": 34, "n_key_citations": 2, "score": 0 }, { "doc_id": "52308793", "title": "A Distributed Dynamic Event Triggered Control Approach to Consensus of Linear Multiagent Systems With Directed Networks", "abstract": "In this paper, we study the consensus problem for a class of linear multiagent systems, where the communication networks are directed. First, a dynamic event triggering mechanism is introduced, including some existing static event triggering mechanisms as its special cases. Second, based on the dynamic event triggering mechanism, a distributed control protocol is developed, which ensures that all agents can reach consensus with an exponential convergence rate. Third, it is shown that, with the dynamic event triggering mechanism, the minimum interevent time between any two consecutive triggering instants can be prolonged and no agent exhibits Zeno behavior. Finally, an algorithm is provided to avoid continuous communication when the dynamic event triggering mechanism is implemented. The effectiveness of the results is confirmed through a numerical example.", "corpus_id": 52308793, "venue": "IEEE Transactions on Cybernetics", "year": 2020, "author_names": [ "Wenfeng Hu", "Chunhua Yang", "Tingwen Huang", "Weihua Gui" ], "n_citations": 42, "n_key_citations": 2, "score": 1 } ]

[ { "doc_id": "51721447", "title": "Direct archaeological evidence for Southwestern Amazonia as an early plant domestication and food production centre", "abstract": "Southwestern Amazonia is considered an early centre of plant domestication in the New World, but most of the evidence for this hypothesis comes from genetic data since systematic archaeological fieldwork in the area is recent. This paper provides first hand archaeobotanical evidence of food production from early and middle Holocene (ca. 9,000 5000 cal. BP) deposits at Teotonio, an open air site located on a 40 m high bluff on the south bank of the Madeira river. Such evidence includes the presence of local and exotic domesticates such as manioc (Manihot esculenta) squash (Cucurbita sp. and beans (Phaseolus sp. alongside edible fruits such as pequia (Caryocar sp. and guava (Psidium sp. that point to the beginnings of landscape domestication. The results contribute to an ever growing number of studies that posit southwest Amazonia as an important centre for early crop domestication and experimentation, and which highlight the longue duree of human impacts on tropical forest biodiversity around the world.", "corpus_id": 51721447, "venue": "PloS one", "year": 2018, "author_names": [ "Jennifer Watling", "Myrtle P Shock", "Guilherme Zdonek Mongelo", "Fernando O Almeida", "Thiago Kater", "Paulo E De Oliveira", "Eduardo G Neves" ], "n_citations": 59, "n_key_citations": 3, "score": 2 }, { "doc_id": "153974810", "title": "The role of archaeological and cultural historical records in long range coastal fisheries resources management strategies and policies in the Pacific Islands", "abstract": "The usefulness of conventional fisheries science for long term fisheries management and policies in the resource poor islands of the Pacific is very limited. Fishery managers can, however, make use of such alternative sources of information as archaeological and historical data to develop fishery management initiatives. Most Pacific Islands were settled by humans over the last three millennia, although human settlement in Western Melanesia dates from the late Pleistocene, a period of about 40 millennia. Archaeological studies over the past half century contain information on the long term subsistence exploitation of fish and invertebrates from nearshore coral reefs and lagoons. Molluscs appear to have been a very important food source for early human colonists in the Pacific Islands, but declines in abundance through harvest pressure and environmental changes forced a greater reliance on fin fish capture and on agriculture. There is no firm evidence from the archaeological record to suggest that long term subsistence exploitation of reef fish populations has had any serious negative effects on abundance or structure of reef fish communities. Sources for more recent historical information are also exemplified and briefly examined for their usefulness in assessing the impacts of commercial fishing. It is argued that fishery managers who adopt a data less approach to fishery management could profitably use these sources of information to enrich their assessment of the impacts of various management scenarios.", "corpus_id": 153974810, "venue": "", "year": 1998, "author_names": [ "Paul J Dalzell" ], "n_citations": 61, "n_key_citations": 2, "score": 2 }, { "doc_id": "163926986", "title": "A Possible Gold Pectoral from Panama", "abstract": "An undecorated gold disk, considered to be a pectoral in an early stage of manufacture, is described. This specimen is from a stone covered grave in the Province of Bocas del Toro and is attributed to the Chiriqui culture. MANY PECTORALS or breastplates have been found in prehistoric graves of Panama. Although some of these are made of materials other than gold, the majority are made of this metal. They vary widely in size and weight; some are decorated and some are undecorated. The first mention of such items of jewelry was the comment by Columbus that the natives along the coast of Veraguas (this includes the Panamanian province now known as Bocas del Toro) wore \"espejos de oro\" or mirrors of gold. Only decorated pectorals have been illustrated in archaeological publications (Lothrop 1937: 112 29; 1950: 73; MacCurdy 1911: 223 6) However, Bollaert (1860) mentions that he examined several thin gold plates from Chiriqui, and some of these were undecorated. The gold specimen described here (Fig. 1) was discovered by a huaquero (grave digger) in the highlands of Bocas del Toro, which is the northernmost province in Panama. It was found in a stone covered grave of the Chiriqui culture, which is represented principally in the Province of Chiriqui on the Pacific side of the Cordillera but extends north and west into Costa Rica. Many of the artifacts from this grave were described earlier (Mitchell 1961) but the gold disk was overlooked. As it is believed to be an unfinished pectoral, and since such specimens have not been previously noted in the literature, it appears to warrant this note. The artifact is of a fine yellow gold and weighs 75.4 grams. It averages 0.4 cm. in thickness, and the diameter ranges from 3.8 to 4.2 cm. There are markings near the edges on each face, and these seem to indicate that hammering had begun. Hammering was the method commonly used in the manufacture of such flat work as pectorals. It is possible, of course, that this is not a pectoral in the initial stage of manufacture but an ingot used for storage of gold or for trading purposes. It does not appear to be a nugget because gold is not often found in nuggets of this size. Its form, relative thinness, and evidence of incipient hammering all suggest that it was intended for eventual use as a pectoral.", "corpus_id": 163926986, "venue": "", "year": 1963, "author_names": [ "Russell H Mitchell" ], "n_citations": 0, "n_key_citations": 0, "score": 6 }, { "doc_id": "162019809", "title": "Note on the Archaeology of Chiriqui", "abstract": "THE faunal environment of a given region is apt to be reflected in its primitive art, especially when the art is primarily of local origin. The province of Chiriqui, Republic of Panama, affords a good example of this interrelation. Archeologically the most common medium of art expression is pottery. The principal motives in the ceramic art of Chiriqui have been traced to certain animal forms. For example, the armadillo and motives derived from that animal, or parts thereof, are so dominant in one large class of pottery as to justify the name armadillo ware for that par", "corpus_id": 162019809, "venue": "", "year": 2007, "author_names": [ "George Grant Maccurdy" ], "n_citations": 0, "n_key_citations": 0, "score": 4 }, { "doc_id": "162000565", "title": "Letter: Archaeology south of the Rio Grande", "abstract": "I find that the cutting of several paragraphs out of the early part of the published version of my paper 'Archaeology south of the Rio Grande, past and present' (World Archaeology (1981) 13 (2) resulted in a disjointed form of some of the ideas I tried to project. Unquestionably, the broadness of the subject caused the article to exceed by far the length requested by the editors. The two portions that disappeared weakened my point that the understanding of the differences between the archaeologies practiced on either side of the Rio Grande should be sought in the historical process of which the two predominant colonialisms in America, the Anglo Saxon and the Hispanic, are a part. The colonization of Hispano America began at the end of the fifteenth century, reaching its peak in the sixteenth; the corresponding periods for that of Anglo America were the seventeenth century and end of the eighteenth when its Revolution and Independence took place. The bare indication of dates does not suffice to explain the profoundly important historical events that took place over that lapse of time. For the Hispano American motherland it spelled the end of the Reconquest with the fall of Granada, the last of the Moorish redoubts, in 1492. With the discovery of America in the same year, the Reconquest was prolonged on the soil of the New World. Spain, which did not yet exist as a nation, was consolidated under Charles I of Spain and V of Germany. This signified, at the same time, a break with its isolation from Europe, an event that took place when it led the Counter Reformation materially and spiritually while England under Henry the Eighth laid down the foundations of puritanism. Also, parallel with the consolidation of British parliamentarianism, Spain, now joined with Portugal, consolidated royal absolutism. The Renaissance ended and humanism began; rationalism appeared with Descartes, and it was the time of Francis Bacon. Moreover, capitalism and the modern epoch were ushered in. It seems to me that this brief outline of the historical phenomena that establish the variances between the two colonizations is important, since they provide a basis for understanding the processes that determined the history of the Americas. Another excised part of the paper contained an explanation of the term 'Latin America' It was invented by a Colombian, Jose Torres Caicedo, in 1861 as a unifying link for all the recently arisen countries that had formerly been Spanish and Portuguese colonies, in line with the aspiration expressed by Bolivar at the so called Amphictyonic Congress held in Panama in 1826.", "corpus_id": 162000565, "venue": "", "year": 1982, "author_names": [ "Jose Luis Lorenzo" ], "n_citations": 0, "n_key_citations": 0, "score": 4 }, { "doc_id": "36412582", "title": "The earliest archaeological maize (Zea mays L. from highland Mexico: new accelerator mass spectrometry dates and their implications.", "abstract": "Accelerator mass spectrometry age determinations of maize cobs (Zea mays L. from Guila Naquitz Cave in Oaxaca, Mexico, produced dates of 5,400 carbon 14 years before the present (about 6,250 calendar years ago) making those cobs the oldest in the Americas. Macrofossils and phytoliths characteristic of wild and domesticated Zea fruits are absent from older strata from the site, although Zea pollen has previously been identified from those levels. These results, together with the modern geographical distribution of wild Zea mays, suggest that the cultural practices that led to Zea domestication probably occurred elsewhere in Mexico. Guila Naquitz Cave has now yielded the earliest macrofossil evidence for the domestication of two major American crop plants, squash (Cucurbita pepo) and maize.", "corpus_id": 36412582, "venue": "Proceedings of the National Academy of Sciences of the United States of America", "year": 2001, "author_names": [ "Dolores R Piperno", "Kent V Flannery" ], "n_citations": 360, "n_key_citations": 21, "score": 7 }, { "doc_id": "198403050", "title": "Zooarchaeological and taphonomical study of the white tailed deer (Cervidae: Odocoileus virginianus Zimmerman 1780) at Sitio Sierra, a pre Columbian village in Pacific Cocle province, Panama, with an evaluation of its role in feasts", "abstract": "The white tailed deer (Cervidae: Odocoileus virginianus) was the most widespread sizeable mammal in the ancient anthropogenic savannahs of the Pacific watershed of Panama. This cursorial, browsing and gregarious species was not only a major component of human diet for several thousand pre contact years but also an iconic mammal imbued with polysemic symbolism. Deer were the most frequently consumed mammal in most pre Columbian refuse deposits, and deer bones and antlers were used to fashion several kinds of implements. Spanish eye witness chroniclers of the years of conquest (1515 1550 CE) refer to cultural proscriptions against eating mammal meat by certain groups in the chiefdoms that bordered Parita Bay on the Pacific coast. Spanish soldiers extolled larders replete with dried and salted deer carcasses. This situation alludes to periodic \"feasts\" which are considered to be an important mechanism for enhancing social relations and for cementing alliances. We argue that feasting behaviour is identifiable at Sitio Sierra (AG 3) a large village located in the alluvial bottomlands of Cocle province near a major river (Santa Maria) and occupied between about 2200 and 500 cal yr. B.P. The representation of all deer body parts in some refuse piles at this site including complete and articulated remains is predicted correlate of rapid and mass consumption typical of feasting. Deer body parts with high meat values predominate. Young animals were consumed. Most of the observed cut marks on deer bones represent de fleshing. There is little evidence for rodents' gnawing the bones and no evidence of carnivore gnawing. The zooarchaeological data are corroborated by data on ceramic vessels and by physical signs of cooking at the site.", "corpus_id": 198403050, "venue": "Archaeological and Anthropological Sciences", "year": 2019, "author_names": [ "Maria Fernanda Martinez-Polanco", "Richard G Cooke" ], "n_citations": 6, "n_key_citations": 0, "score": 3 }, { "doc_id": "4890179", "title": "Evidence for the control of phytolith formation in Cucurbita fruits by the hard rind (Hr) genetic locus: Archaeological and ecological implications", "abstract": "Many angiosperms, both monocotyledons and dicotyledons, heavily impregnate their vegetative and reproductive organs with solid particles of silicon dioxide (SiO2) known as opaline phytoliths. The underlying mechanisms accounting for the formation of phytoliths in plants are poorly understood, however. Using wild and domesticated species in the genus Cucurbita along with their F1 and F2 progeny, we have demonstrated that the production of large diagnostic phytoliths in fruit rinds exhibits a one to one correspondence to the lignification of these structures. We propose that phytolith formation in Cucurbita fruits is primarily determined by a dominant genetic locus, called hard rind (Hr) previously shown to code for lignin deposition. If true, this evidence represents a demonstration of genetic control over phytolith production in a dicotyledon and provides considerable support to hypotheses that silica phytoliths constitute another important system of mechanical defense in plants. Our research also identifies Hr as another single locus controlling more than one important phenotypic difference between wild and domesticated plants, and establishes rind tissue cell structure and hardness under the effects of Hr as an important determinant of phytolith morphology. When recovered from pre Columbian archaeological sites, Cucurbita phytoliths represent genetically controlled fossil markers of exploitation and domestication in this important economic genus.", "corpus_id": 4890179, "venue": "Proceedings of the National Academy of Sciences of the United States of America", "year": 2002, "author_names": [ "Dolores R Piperno", "Irene Holst", "Linda Wessel-Beaver", "Thomas C Andres" ], "n_citations": 97, "n_key_citations": 2, "score": 5 }, { "doc_id": "209695700", "title": "On the Use of 3D Electrical Resistivity Tomography to Detect Archaeological Features in La Compania de Jesus Convent, Panama Viejo Site", "abstract": "3D electrical resistivity tomography has become an important tool in the evaluation of the archaeological value of Hispanic sites in the tropics. This methodology was applied inside the open space (cloister) of La Compania de Jesus convent, which is one of the most important ancient structures of the Panama Viejo Historic Monumental Complex. In this area, a set of apparent electrical resistivity values was measured along 22 parallel profiles 23.5 m long, separated 1.0 m. 3D inversion of these data resulted in a set of horizontal maps of calculated electrical resistivity values at different depths, showing important electrical anomalies associated with the stone column bases and the limits of the cloister.", "corpus_id": 209695700, "venue": "2019 7th International Engineering, Sciences and Technology Conference (IESTEC)", "year": 2019, "author_names": [ "M Lezcano", "Alexis Mojica", "Noemi Rodriguez", "Mirta Linero Baroni", "Carlos A Ho", "Silvia Arroyo", "Muriel Llubes", "Louis Pastor" ], "n_citations": 0, "n_key_citations": 0, "score": 2 }, { "doc_id": "160998848", "title": "Comparative Archaeology: The Camel's Nose?", "abstract": "A Review of The Comparative Archaeology of Complex Societies, edited by Michael E. Smith (Cambridge University Press, 2012)", "corpus_id": 160998848, "venue": "", "year": 2012, "author_names": [ "Timothy A Kohler" ], "n_citations": 0, "n_key_citations": 0, "score": 4 } ]

[ { "doc_id": "218613741", "title": "Centaur: A Chiplet based, Hybrid Sparse Dense Accelerator for Personalized Recommendations", "abstract": "Personalized recommendations are the backbone machine learning (ML) algorithm that powers several important application domains (e.g. ads, e commerce, etc) serviced from cloud datacenters. Sparse embedding layers are a crucial building block in designing recommendations yet little attention has been paid in properly accelerating this important ML algorithm. This paper first provides a detailed workload characterization on personalized recommendations and identifies two significant performance limiters: memory intensive embedding layers and compute intensive multi layer perceptron (MLP) layers. We then present Centaur, a chiplet based hybrid sparse dense accelerator that addresses both the memory throughput challenges of embedding layers and the compute limitations of MLP layers. We implement and demonstrate our proposal on an Intel HARPv2, a package integrated \\mathrm{C}\\mathrm{P}\\mathrm{U}$FPGA device, which shows a 1.7 17.2\\times$ performance speedup and $1.7 19.5\\times \\mathrm{e}\\mathrm{n}\\mathrm{e}\\mathrm{r}\\mathrm{g}\\mathrm{y} efficiency improvement than conventional approaches.", "corpus_id": 218613741, "venue": "2020 ACM/IEEE 47th Annual International Symposium on Computer Architecture (ISCA)", "year": 2020, "author_names": [ "Ranggi Hwang", "Taehun Kim", "Youngeun Kwon", "Minsoo Rhu" ], "n_citations": 32, "n_key_citations": 4, "score": 0 }, { "doc_id": "215800319", "title": "2.2 AMD Chiplet Architecture for High Performance Server and Desktop Products", "abstract": "AMO's \"Rome\" and \"Matisse\" are second generation AMD Infinity Fabric based SoCs using 3 unique hybrid process technology chiplets to achieve leading performance, performance/ and performance/W, targeting server and client markets, respectively (Fig. 2.2.1) The chiplet architecture enables leading edge 7nm [1] CPUs for multiple markets, while retaining backward compatibility to complex 10 and memory subsystems in a scalable design with high reuse for improved time to market. A key benefit is the heterogeneous technology deployed between the CPUs and the 10/mixed signaIP. It is well known that shrink factors in advanced nodes are much lower for analog circuitry than for digital logic and SRAM. By keeping the memory interfaces and SerOes in mature 12nm technology, costs are mitigated since those circuits see a very small shrink factor to 7nm and very little performance or power gain from advanced nodes. A low cost 12nm 10 die (IOD) with the high yielding 8 \"Zen2\" core, 74mm2 7nm CPU compute die (CCD) combine to provide very cost effective performance.", "corpus_id": 215800319, "venue": "2020 IEEE International Solid State Circuits Conference (ISSCC)", "year": 2020, "author_names": [ "Samuel Naffziger", "Kevin M Lepak", "Milam Paraschou", "Mahesh Subramony" ], "n_citations": 20, "n_key_citations": 1, "score": 0 }, { "doc_id": "214197690", "title": "A 7 nm 4 GHz Arm1 Core Based CoWoS1 Chiplet Design for High Performance Computing", "abstract": "We present a dual chiplet interposer based system in package (SiP) octo core processor using Chip on Wafer on Substrate (CoWoS) technology. Each of the two identical chiplets is implemented in 7 nm CMOS with 15 metal layers and has four Arm Cortex A72 processor cores operating at 4.0 GHz. A bidirectional mesh bus with 2 mm flop to flop distance is distributed throughout the chiplet for high speed on die data transport above 4.0 GHz. The chiplets communicate with each other through ultrashort reach (0.5 mm long) interposer channels using a Low voltage In Package INterCONnect (LIPINCON) clock forwarded parallel interface. The scalable link module offers 320 GB/s of aggregate bandwidth, operating at 8.0 Gb/s/pin and 0.3 V transmitter swing without receiver termination to achieve 0.56 pJ/bit energy efficiency and 1.6 Tb/s/mm2 bandwidth density. Measurements of the fabricated SiP validate the functionality and performance of the cores, on die data bus, and inter chiplet link. The built in LIPINCON eye scan feature validates inter chiplet connectivity at 8.0 Gb/s with an eye opening of 244 mV and 0.69 UI.", "corpus_id": 214197690, "venue": "IEEE Journal of Solid State Circuits", "year": 2020, "author_names": [ "Mu-Shan Lin", "Tze-Chiang Huang", "Chien-Chun Tsai", "King Ho Tam", "Kenny Cheng-Hsiang Hsieh", "Ching-Fang Chen", "Wen-Hung Huang", "Chi-Wei Hu", "Yu-Chi Chen", "Sandeep Kumar Goel", "Chin-Ming Fu", "Stefan Rusu", "Chao-Chieh Li", "Sheng-Yao Yang", "Mei Wong", "Shu-Chun Yang", "Frank Lee" ], "n_citations": 9, "n_key_citations": 1, "score": 1 }, { "doc_id": "198335054", "title": "CAMON: Low Cost Silicon Photonic Chiplet for Manycore Processors", "abstract": "While many new applications prefer manycore processor with a large number of cores, the exploding communications among multiple cores, caches, and off chip memories is posing a fundamental challenge on manycore designs. Silicon photonics based interconnection network promises high bandwidth, low latency, and high energy efficiency, and can potentially meet the communication requirements of manycore processors. In this paper, we propose CAMON, a small low cost silicon photonic chiplet integrated into the manycore processor package. CAMON chiplet can effectively alleviate the communication bottlenecks of manycore processors and improve the energy efficiency of data movement, especially for large scale systems. We develop a distributed arbitration system, a low power low latency optical interface, and an off chip laser preactivation mechanism for CAMON. The experimental results show that compared with the electrical network, CAMON can improve the full system performance per energy by <inline formula> <tex math notation=\"LaTeX\"$4.6\\times /tex math>/inline formula> speedup the manycore processor by <inline formula> <tex math notation=\"LaTeX\"$2.7\\times /tex math>/inline formula> and save the area of the processor die by 3% in a 512 core system.", "corpus_id": 198335054, "venue": "IEEE Transactions on Computer Aided Design of Integrated Circuits and Systems", "year": 2020, "author_names": [ "Zhehui Wang", "Zhifei Wang", "Jiang Xu", "Yi-Shing Chang", "Jun Feng", "Xuanqi Chen", "Shixi Chen", "Jiaxu Zhang" ], "n_citations": 6, "n_key_citations": 0, "score": 1 }, { "doc_id": "219548434", "title": "Special Session: Test Challenges in a Chiplet Marketplace", "abstract": "Chiplet based designs enable the heterogeneous integration of die from multiple process nodes into a single packaged product. High bandwidth memory is a well known high volume chiplet based product. Today, most chiplet based logic products are single vendor products built with proprietary die to die (D2D) interfaces between the chiplets in a package. Industry and academia have developed standards and methods to address the test challenges expected with chiplet based products. These efforts have focused on improving die yield and test access structures. The Open Compute Project's Open Domain Specific Architecture (ODSA) is a new effort that aims to define an open physical and logical D2D interface and create a marketplace of chiplets. With an open interface, product developers can integrate best in class chiplets from multiple vendors. An open D2D interface offers both new opportunities and challenges in testing multi chiplet products. The opportunity is in leveraging economies of scale. The challenge is in enabling greater interoperability between test structures in different chiplets and across vendors. This paper reviews recent developments in chiplet test, especially leveraging work on HBM and discusses their extension to testing products based on open D2D interfaces.", "corpus_id": 219548434, "venue": "2020 IEEE 38th VLSI Test Symposium (VTS)", "year": 2020, "author_names": [ "M Hutner", "Rajamani Sethuram", "Bapiraju Vinnakota", "David Armstrong", "A Copperhall" ], "n_citations": 7, "n_key_citations": 1, "score": 1 }, { "doc_id": "218776269", "title": "Chiplet Heterogeneous Integration Technology Status and Challenges", "abstract": "As a heterogeneous integration technology, the chiplet based design technology integrates multiple heterogeneous dies of diverse functional circuit blocks into a single chip by using advanced packaging technology, which is a promising way to tackle the failure of Moore's law and Dennard scaling. Currently, as process nodes move forward, dramatically rising cost, design cycle, and complexity are driving industry to focus on the chiplets. Chiplets allows IC designers to merge dies fabricated at different process nodes and reuse them in different projects, which helps to reduce the cost during design and improve yield. In this review, we look back at the industry's efforts over the past decade and summary the concepts and techniques associated with chiplets. In the end, a discussion and conclusion will be given to forecast the future of chiplets.", "corpus_id": 218776269, "venue": "", "year": 2020, "author_names": [ "Tao Li", "Jie Hou", "Jinli Yan", "Rulin Liu", "Honbo Yang", "Zhigang Sun" ], "n_citations": 8, "n_key_citations": 1, "score": 2 }, { "doc_id": "214691429", "title": "Chiplet Package Co Design For 2.5D Systems Using Standard ASIC CAD Tools", "abstract": "Chiplet integration using 2.5D packaging is gaining popularity nowadays which enables several interesting features like heterogeneous integration and drop in design method. In the traditional die by die approach of designing a 2.5D system, each chiplet is designed independently without any knowledge of the package RDLs. In this paper, we propose a Chip Package Co Design flow for implementing 2.5D systems using existing commercial chip design tools. Our flow encompasses 2.5D aware partitioning suitable for SoC design, Chip Package Floorplanning, and post design analysis and verification of the entire 2.5D system. We also designed our own package planners to route RDL layers on top of chiplet layers. We use an ARM Cortex M0 SoC system to illustrate our flow and compare analysis results with a monolithic 2D implementation of the same system. We also compare two different 2.5D implementations of the same SoC system following the drop in approach. Alongside the traditional die by die approach, our holistic flow enables design efficiency and flexibility with accurate cross boundary parasitic extraction and design verification.", "corpus_id": 214691429, "venue": "2020 25th Asia and South Pacific Design Automation Conference (ASP DAC)", "year": 2020, "author_names": [ "M D Arafat Kabir", "Yarui Peng" ], "n_citations": 5, "n_key_citations": 2, "score": 0 }, { "doc_id": "227219809", "title": "Coupling Extraction and Optimization for Heterogeneous 2.5D Chiplet Package Co Design", "abstract": "In recent years, 2.5D chiplet package designs have gained popularity in system integration of heterogeneous technologies. Currently, there exists no standard CAD flow that can design, analyze, and optimize a complete heterogeneous 2.5D system. The traditional die by die design approach does not consider any package layers during extraction and optimization, and an accurate chiplet package extraction can not be applied to heterogeneous designs without fundamental changes in standard CAD tools. In this paper, we present our Holistic and In Context chiplet package co design flows for high performance high density 2.5D systems using standard ASIC CAD tools with zero overhead on IO pipeline depth. Our flow encompasses 2.5D aware partitioning, chiplet package co planning, in context extraction, iterative optimization, and post design analysis and verification of the entire 2.5D system. We design our package planner with a routing and pin planning strategy to minimize package routing congestion and timing overhead. An ARM Cortex M0 based microcontroller system is designed as the benchmark. The performance gap to the reference 2D design reduces by 62.5% when chip package interactions are taken into account in the holistic flow. Our in context extraction achieves only 0.71% and 0.79% error on ground and coupling capacitance on a homogeneous system. Further, we implement a heterogeneous 2.5D system to demonstrate our novel in context design and optimization methodology.", "corpus_id": 227219809, "venue": "2020 IEEE/ACM International Conference On Computer Aided Design (ICCAD)", "year": 2020, "author_names": [ "M D Arafat Kabir", "Dusan Petranovic", "Yarui Peng" ], "n_citations": 4, "n_key_citations": 2, "score": 1 }, { "doc_id": "225079697", "title": "Architecture, Chip, and Package Codesign Flow for Interposer Based 2.5 D Chiplet Integration Enabling Heterogeneous IP Reuse", "abstract": "A new trend in system on chip (SoC) design is chiplet based IP reuse using 2.5 D integration. Complete electronic systems can be created through the integration of chiplets on an interposer, rather than through a monolithic flow. This approach expands access to a large catalog of off the shelf intellectual properties (IPs) allows reuse of them, and enables heterogeneous integration of blocks in different technologies. In this article, we present a highly integrated design flow that encompasses architecture, circuit, and package to build and simulate heterogeneous 2.5 D designs. Our target design is 64 core architecture based on Reduced Instruction Set Computer (RISC) V processor. We first chipletize each IP by adding logical protocol translators and physical interface modules. We convert a given register transfer level (RTL) for 64 core processor into chiplets, which are enhanced with our centralized network on chip. Next, we use our tool to obtain physical layouts, which is subsequently used to synthesize chip to chip I/O drivers and these chiplets are placed/routed on a silicon interposer. Our package models are used to calculate power, performance, and area (PPA) and reliability of 2.5 D design. Our design space exploration (DSE) study shows that 2.5 D integration incurs $1.29\\times power and $2.19\\times area overheads compared with 2 D counterpart. Moreover, we perform DSE studies for power delivery scheme and interposer technology to investigate the tradeoffs in 2.5 D integrated chip (IC) designs.", "corpus_id": 225079697, "venue": "IEEE Transactions on Very Large Scale Integration (VLSI) Systems", "year": 2020, "author_names": [ "Jinwoo Kim", "Gauthaman Murali", "Heechun Park", "Eric Qin", "Hyoukjun Kwon", "Venkata Chaitanya Krishna Chekuri", "Nael Mizanur Rahman", "Nihar Dasari", "Ashutosh Kumar Singh", "Minah Lee", "Hakki Mert Torun", "Kallol Roy", "Madhavan Swaminathan", "S Mukhopadhyay", "Tushar Krishna", "Sung Kyu Lim" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "215800437", "title": "2.3 A 220GOPS 96 Core Processor with 6 Chiplets 3D Stacked on an Active Interposer Offering 0.6ns/mm Latency, 3Tb/s/mm2 Inter Chiplet Interconnects and 156mW/mm2@ 82% Peak Efficiency DC DC Converters", "abstract": "In the context of high performance computing and big data applications, the quest for performance requires modular, scalable, energy efficient, low cost manycore systems. Partitioning the system into multiple chiplets 3D stacked onto large scale interposers organic substrate [1] 2.5D passive interposer [2] or silicon bridge [3] leads to large modular architectures and cost reductions in advanced technologies by the Known Good Die (KGD) strategy and yield management. However, these approaches lack flexible efficient long distance communications, smooth integration of heterogeneous chiplets, and easy integration of less scalable analog functions, such as power management [4] and system IOs. To tackle these issues, this paper presents an active interposer integrating: i) a Switched Capacitor Voltage Regulator (SCVR) for on chip power management; ii) flexible system interconnect topologies between all chiplets for scalable cache coherency support; iii) energy efficient 3D plugs for dense inter layer communication; iv) a memory IO controller and PHY for socket communication. The chip (Fig. 2.3.7) integrates 96 cores in 6 chiplets in 28nm FDSOI CMOS, 30 stacked in a face to face configuration using 20um pitch micro bumps (u bumps) onto a 200 mm2 active interposer with 40um pitch Through Silicon Via (TSV) middle in a 65nm technology node. Even though complex functions are integrated, active interposer yield is high thanks to the mature 65nm node and a reduced complexity (0.08transistors/um2) with 30% of interposer area devoted to a SCVR variability tolerant capacitors scheme.", "corpus_id": 215800437, "venue": "2020 IEEE International Solid State Circuits Conference (ISSCC)", "year": 2020, "author_names": [ "Pascal Vivet", "Eric Guthmuller", "Yvain Thonnart", "Gael Pillonnet", "Guillaume Moritz", "Ivan Miro-Panades", "Cesar Fuguet Tortolero", "Jean Durupt", "Christian Bernard", "Didier Varreau", "Julian J H Pontes", "Sebastien Thuries", "David Coriat", "Michel Harrand", "Denis Dutoit", "Didier Lattard", "Lucile Arnaud", "Jean Charbonnier", "Perceval Coudrain", "Arnaud Garnier", "Frederic Berger", "Alain Gueugnot", "Alain Greiner", "Quentin L Meunier", "Alexis Farcy", "Alexandre Arriordaz", "Severine Cheramy", "Fabien Clermidy" ], "n_citations": 9, "n_key_citations": 1, "score": 1 } ]

[ { "doc_id": "202261100", "title": "Kahoot! Using a game based approach to blended learning to support effective learning environments and student engagement in traditional lecture theatres", "abstract": "ABSTRACT Traditional lecture theatre environments present significant challenges in higher education, in light of increasingly large and diverse student populations. This small scale study explores how blended learning through the game based platform Kahoot! can be used to enhance the learning experience offered to students in these spaces, from the perspective of 44 final year primary education undergraduates. An action research approach was employed with data collected from pre and post lecture surveys. Findings suggest that the integration of synchronous online learning in lecture theatres presented no technical difficulties and that gaming was successful in enabling active participation and interactive learning. Students valued its competitive nature, the immediacy of feedback on their knowledge and structured opportunities for further discussion. Students reported improvements in engagement, concentration and retention, although results for the latter were more ambiguous and would benefit from further investigation.", "corpus_id": 202261100, "venue": "", "year": 2020, "author_names": [ "C Holbrey" ], "n_citations": 8, "n_key_citations": 0, "score": 2 }, { "doc_id": "225228102", "title": "The Transportability of a Game Based Learning Approach to Undergraduate Mechanical Engineering Education: Effects on Student Conceptual Understanding, Engagement, and Experience", "abstract": "Many game based instructional designs have demonstrated effectiveness for a variety of educational outcomes, although typically in limited contexts. In this article, we report the results of a four year study testing the extent to which a game based learning approach to undergraduate engineering education demonstrating promising results in a university course was transportable to other engineering courses and universities. We evaluated students' conceptual understanding, emotional engagement (with the Experience Sampling Method) and experience when using the video game, Spumone, for their coursework compared to a textbook based control condition. Multilevel models and other quantitative analyses showed that the effect of the experimental condition (i.e. game based) on conceptual understanding and student engagement was not significant. Based on a content analysis of students' feedback, however, the students reported a positive experience with game based learning for their assignments overall. Areas of need towards successful implementation of the game based learning intervention were also examined. This study has important implications for the salience of implementation issues including adequate training and continuing teacher professional development, and ongoing supports for instructors and students to aid in the learning of concepts that the game was intended to teach.", "corpus_id": 225228102, "venue": "", "year": 2020, "author_names": [ "David J Shernoff", "Jiheon Ryu", "Erik A Ruzek", "Brianno D Coller", "Vincent C Prantil" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "229543613", "title": "Game Based Learning and Student Motivation in Mathematics", "abstract": "The application of game based learning (GBL) is seen to have many benefits in helping to improve the quality of the teaching and learning process. GBL approach will encourage students to solve problems and self learning and thus enable students to learn a mathematical concept without realizing it. The review findings show that GBL helps teachers to motivate student engagement in Mathematics. This is because GBL is regarded as a potential means for improving students' confidence and increasing their motivation by incorporating challenge, curiosity and fantasy to a specific problem. The application of GBL has a positive impact on student motivation and involvement in Mathematics learning. Further reading should be made on the motivational impact of student self efficacy. This is because previous studies have also found that student motivation influences students' self efficacy in that students who believe in their own abilities are more motivated to engage in learning", "corpus_id": 229543613, "venue": "", "year": 2020, "author_names": [ "Izzat Syahir Mohd Ramli", "Siti Mistima Maat", "Fariza Khalid" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "86566963", "title": "From here to there! Elementary: a game based approach to developing number sense and early algebraic understanding", "abstract": "This paper examines whether using From Here to There! (FH2T:E) a dynamic game based mathematics learning technology relates to improved early algebraic understanding. We use student log files within FH2T to explore the possible benefits of student behaviors and gamification on learning gains. Using in app measures of student interactions (mouse clicks, resets, errors, problem solving steps, and completions) 19 variables were identified to summarize overall problem solving processes. An exploratory factor analysis identified five clear factors including engagement in problem solving, progress, strategic flexibility, strategic efficiency, and speed. Regression analyses reveal that after accounting for behavior within the app, playing the gamified version of the app contributed to higher learning gains than playing a nongamified version. Next, completing more problems within the game related to higher achievement on the post test. Third, two significant interactions were found between progress and prior knowledge and engagement in problem solving and prior knowledge, where low performing students gained more when they completed more problems and engaged more with those problems.", "corpus_id": 86566963, "venue": "Educational Technology Research and Development", "year": 2019, "author_names": [ "Taylyn Hulse", "Maria Elizabeth Daigle", "Daniel Manzo", "Lindsay Hanna Braith", "Avery Harrison", "Erin Ottmar" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "226794308", "title": "Game Based Approach to Teaching and Learning in Optometry Education", "abstract": "Game technologies has the potential to shift health education towards experiential learning by offering a highly realistic learning experience while facilitating student engagement and enabling students' practice and prepare for complex real world situations and clinical decision making. This paper described the development of a gamified technology for teaching and learning red eye pupillary reflexes for use in Optometry education. The game was developed using Autodesk Maya, ZBrush, and Photoshop. The eye model design explicitly showed the anterior iris as well as pupillary reflexes (dilation and constriction) and red eye reflexes via an interactive 3D simulation. The RedEye Game is an innovative strategy suitable to provide a realistic display of red eye signs and pupillary reflexes in a controlled environment. The RedEye Game can support the training of optometry students by delivering and reinforcing critical knowledge and concepts while providing educators with new strategies to supplement traditional education approaches.", "corpus_id": 226794308, "venue": "", "year": 2019, "author_names": [ "Baris Isikguner", "Valerie Onyinyechi Umaefulam" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "198140913", "title": "Using online game based platforms to improve student performance and engagement in histology teaching", "abstract": "BackgroundHuman morphology is a critical component of dental and medical graduate training. Innovations in basic science teaching methods are needed to keep up with an ever changing landscape of technology. The purpose of this study was to investigate whether students in a medical and dental histology course would have better grades if they used gaming software Kahoot(r) and whether gamification effects on learning and enjoyment.MethodsIn an effort to both evoke students' interest and expand their skill retention, an online competition using Kahoot(r) was implemented for first year students in 2018 (n 215) at the University of Eastern Finland. Additionally, closed (160/215) or open ended (41/215) feedback questions were collected and analyzed.ResultsThe Kahoot(r) gamification program was successful and resulted in learning gains. The overall participant satisfaction using Kahoot(r) was high, with students (124/160) indicating that gamification increased their motivation to learn. The gaming approach seemed to enable the students to overcome individual difficulties (139/160) and to set up collaboration (107/160) furthermore, gamification promoted interest (109/160) and the respondents found the immediate feedback from senior professionals to be positive (146/160) In the open ended survey, the students (23/41) viewed collaborative team and gamification based learning positively.ConclusionThis study lends support to the use of gamification in the teaching of histology and may provide a foundation for designing a gamification integrated curriculum across healthcare disciplines.", "corpus_id": 198140913, "venue": "BMC medical education", "year": 2019, "author_names": [ "Szabolcs Felszeghy", "Sanna Pasonen-Seppanen", "Ali Koskela", "Petteri Nieminen", "Kai Harkonen", "Kaisa M A Paldanius", "Sami Gabbouj", "Kirsi Ketola", "Mikko Hiltunen", "Mikael Lundin", "Tomi P Haapaniemi", "Erkko T Sointu", "Eric B Bauman", "Gregory E Gilbert", "David A Morton", "Anitta Mahonen" ], "n_citations": 32, "n_key_citations": 4, "score": 1 }, { "doc_id": "46987506", "title": "A Game Based Approach to Teaching and Learning Anatomy of the Liver and Portal Venous System", "abstract": "Introduction The use of games and game elements as teaching tools has received increasing attention in the medical education literature. Used formatively, games promote student engagement and satisfaction, and encourage collaboration and teamwork among students. They may also help students retain knowledge, although research supporting this notion is limited. This resource contains a 30 minute interactive lab station involving two different game based activities aimed at teaching functional anatomy of the liver and portal venous system. Methods The first activity is a flipped version of a traditional pinned anatomy practical, wherein students place their own pins on a body donor in response to application level prompts. The second activity is an outlay type card game where students assemble cards to depict the venous drainage of gut organs in a healthy patient versus one with portal hypertension. Results In end of session reviews, several students volunteered feedback that the activities were effective and enjoyable. Additionally, average student scores on two subject exam questions increased by approximately 13% and 4% compared with students who took the exam before the game elements were introduced. Discussion These game based activities may serve as a starting point for others wishing to deal with historically difficult topics in a more engaging way. The tools presented are low cost, low tech, and easy to modify for use with different student populations.", "corpus_id": 46987506, "venue": "MedEdPORTAL the journal of teaching and learning resources", "year": 2018, "author_names": [ "Robert V Hill", "Zeinab Nassrallah" ], "n_citations": 8, "n_key_citations": 0, "score": 0 }, { "doc_id": "186525641", "title": "'Protein Synthesis Game' Utilizing Game Based Approach for Improving Communicative Skills in A Levels Biology Class.", "abstract": "This experimental paper seeks to elucidate the usage of the card game 'Protein Synthesis Game' as a student's learning tool in studying the Biology topic of protein synthesis during an A Level course. A total of 24 experimental students in 3 induced groups and 24 controlled students in controlled groups were involved in the experiment which began with a pretest on the topic of Protein Synthesis, followed by the experimentation, and ended with a post test administered after the incubation period. Results indicate that students have better facilitative communicative engagement in learning protein synthesis when playing the game as compared to 'PROTEIN SYNTHESIS GAME' UTILIZING GAME BASED APPROACH FOR IMPROVING COMMUNICATIVE SKILLS IN A LEVELS BIOLOGY CLASS mohd Adlan ramly1 mohdadlan@salam.uitm.edu.my Nurul Aida binti Kamal Ikhsan2 nurulaida@salam.uitm.edu.my Nur rahimatul Hayati binti Abdul rahman3 rahimatul@salam.uitm.edu.my Norlizayati binti ramlan4 norliz2901@puncakalam.uitm.edu.my 1Faculty of Education, Universiti Technologi MARA Kampus Puncak Alam, 42300 Bandar Puncak Alam, Selangor, MALAYSIA 234Centre of Foundation Studies Universiti Technologi MARA 43800 Dengkil, Selangor, MALAYSIA Received: 25 July 2017 Accepted: 28 October 2017", "corpus_id": 186525641, "venue": "", "year": 2017, "author_names": [ "Mohd Adlan Ramly", "Nurul Aida Binti Kamal Ikhsan", "Nur Hayati Abdul Rahman", "Nur Rahimatul Hayati Binti Abdul" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "208108044", "title": "A 'KAHOOT! Approach: The Effectiveness of Game Based Learning for an Advanced Placement Biology Class", "abstract": "Background.Keeping high school students engaged and motivated to learn complex scientific concepts can be difficult and challenging; this is especially true if the task feels daunting and unfamiliar to the students. Incorporating educational technology, such as KAHOOT, into the classroom can help students learn scientific material even when it is difficult. Aim. Our objective is to determine the effectiveness of gamification in an Advanced Placement Biology (AP biology) classroom by using the online game 'KAHOOT! as a supplement to traditional teacher centered learning. In addition, we determine the use of 'KAHOOT! in enhancing student engagement and the learning experience for biology. Methods. A presentation on Transcription and Translation was given to a small group of high school AP Biology students (n 18, 18 women) After the presentation, the students were given 15 questions and twenty seconds to answer each question in the 'KAHOOT! game. Both the students and the teacher were given a post activity survey to assess their interest in the activity. Results. Based on the responses in the Students' Survey, 'KAHOOT! can be used as a gamified assessment tool to help students learn the topic of 'Transcription and Translation' by actively engaging them in a fun and exciting manner. Conclusion. The overall activity had a positive impact on the students and teacher as the students enjoyed learning Transcription and Translation through the use of 'KAHOOT!", "corpus_id": 208108044, "venue": "Simulation Gaming", "year": 2019, "author_names": [ "Serena Jones", "Priya Katyal", "Xuan Xie", "Madeleine P Nicolas", "Eric Leung", "Damon M Noland", "Jin Kim Montclare" ], "n_citations": 13, "n_key_citations": 0, "score": 0 }, { "doc_id": "226629709", "title": "Re Designing the Senior Design Classroom Experience with Game Based Learning.", "abstract": "Historically, classroom content delivery has relied on lecture, but recently there has been a call for educators to use active learning to promote student engagement and a deeper understanding of the material (Bonwell and Eison 1991; Erickson 1984; Cross 1987; Prince 2004; Bodnar and Clark 2014) According to Prince (2004) active learning is any method that promotes engagement with the material through activities and requires students to think about what they are doing. This mixed methods study used Game Based Learning as an active learning methodology to embed 21 Century Skills and epistemic frames into the domain content of a Bioengineering Senior Design Course. The control section was taught primarily with seventy five minute lectures and the intervention section used a flipped classroom approach where in class time focused on games and activities. The intervention was developed using Game Based Learning (GBL) as the pedagogy within the Cognitive Apprenticeship framework. The framework is based on the traditional model of apprenticeship where students learn how to replicate the thought processes of an industry professional and then apply those techniques to their own project (Collins and Kapur 2014; Pieters and de Bruijn 1992; Mitterer and John 2006; Stalmeijer 2015) The quantitative data indicated that students from both sections of the course learned acceptable levels of domain content. However, qualitative data which included student reflections and semi structured interviews did indicate that students in the intervention section developed a better understanding of 21 Century Skills. This led us to the conclusion that Game Based Learning within the Cognitive Apprenticeship model can be used as a valuable classroom tool for delivering curriculum in senior design courses.", "corpus_id": 226629709, "venue": "", "year": 2020, "author_names": [ "Erica B Walker", "John D DesJardins", "Breanne Przestrzelski" ], "n_citations": 1, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "169565237", "title": "The Product Characteristic of Electronic Money from the Perspective of the Negotiable Instruments Law", "abstract": "The development of currency trading is not only using the cash as a payment instrument for a transaction. For example is the emergence of non cash payments such as negotiable instruments. That type of instrument offers a more effective and safer way than using the cash. Along with the development of the technology, a non cash payment innovation emerged, which characteristics, at a glance, similar to negotiable instruments, such as credit cards, debit cards, and electronic money products which gives a safer and more efficient way than using the cash for a transaction. Based on this, led to the view that non cash payment instruments such as credit cards, debit cards, and electronic money products can be classified as negotiable instruments. However, that classification must be done by reviewing the relevant regulations, such as Commercial Code and else and also observing the doctrines in the perspective of the science concerned, to state that the development of such instruments can be classified as negotiable instruments or not. Keywords: Negotiable instruments, Letter of Value, Credit Cards, Debit Cards, Electronic Money Products, Classification", "corpus_id": 169565237, "venue": "", "year": 2018, "author_names": [ "Geigiansyah Aulia Putra", "Hilda Yunita Sabrie", "Prawitra Thalib" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "226332770", "title": "STRESS INDEX IN UKRAINE'S MARKET OF NEGOTIABLE FINANCIAL INSTRUMENTS", "abstract": "", "corpus_id": 226332770, "venue": "", "year": 2018, "author_names": [ "I S Kravchuk" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "169216002", "title": "Suchasni tendentsiyi elektronnoyi torgivli obigovimi finansovimi instrumentami Modern trends of electronic trading by negotiable financial instruments", "abstract": "Mizhnarodni rinki obigovikh finansovikh instrumentiv kharakterizuiut'sia visokim rivnem elektronizatsiyi, shcho vidobrazhaiet'sia zastosuvanniam konsolidovanoyi knigi limitnikh orderiv, rozshirenniam spektra torgovel'nikh orderiv, intelektual'noiu marshrutizatsiieiu orderiv, visokoiu shvidkistiu dostupu do rinku na osnovi minimizatsiyi latentnosti. Naslidkom elektronizatsiyi rinkiv ie rozvitok visokochastotnoyi torgivli, pozitivnimi risami iakoyi ie zbil'shennia torgovel'noyi aktivnosti ta rinkovoyi likvidnosti, znizhennia transaktsiinikh vitrat toshcho. Golovnim nedolikom visokochastotnoyi torgivli ie potentsiinii negativnii vpliv na rinkovu stabil'nist' cherez imovirni programni zboyi, manipuliativni mozhlivosti algoritmichnikh strategii, zokrema, tekhnichnii arbitrazh, vikoristannia gomogennikh strategii, kiber riziki. Isnuiucha sistema visokochastotnoyi torgivli potrebuie zakhodiv z boku reguliatornikh organiv shchodo podolannia informatsiinikh gepiv ta posilenogo monitoringu dlia stvorennia reguliatornogo seredovishcha, iake b vrakhovuvalo iak aspekti pidtrimki rozvitku rinku, tak i iogo stabil'nosti na osnovi vidpovidnogo makroprudentsiinogo instrumentariiu, zokrema, zdiisnennia stres testuvannia reaktsiyi visokochastotnikh algoritmiv na shoki riznogo pokhodzhennia, z urakhuvanniam agregovanogo rinkovogo efektu vzaiemnogo vplivu riznikh algoritmichnikh strategii. International negotiable financial instrument markets have a high level of electronic trading. It is displayed using the consolidated limit order book, the widening the range of trading orders, smart order routing, high speed access to the market on the basis of latency minimizing. The result of electronic trading is the development of high frequency trading, the positive features of which are the increase of trading activity and market liquidity, and the reducing of transaction costs. The main drawback of high frequency trading is the potential negative impact on market stability (software failures, the manipulative incentives of algorithmic strategies, in particular, technical arbitrage, the use of homogeneous strategies, cyber risks) The current system of high frequency trading requires particular actions from the regulators to overcome information gaps and enhanced monitoring to create a regulatory environment that could take into account both the aspects of supporting market development and its stability through appropriate macroprudential instruments, especially the implementation of the stress testing of the high frequency algorithms in response to the shocks of various origin, taking into account the aggregate market effect of the mutual influence of different algorithmic strategies.", "corpus_id": 169216002, "venue": "", "year": 2018, "author_names": [ "Igor Sviatoslavovich Kravchuk" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "169280627", "title": "OPERATIONALIZING THE INDIRECT INSTRUMENTS OF MACROPRUDENTIAL POLICY IN THE NEGOTIABLE FINANCIAL INSTRUMENTS MARKET", "abstract": "Holistic system of macroprudential policy for the negotiable financial instruments market in the context of the instrumental operationalization on the basis of systematization of existing and development of proposals for the introduction of new tools are studied in the article for create a coherent indirect macroprudential regulation complex in this area. Macroprudential tools in the framework of the operationalization require research of regulatory action duplication and identification possible conflicts, because the enhanced effect of a such instruments combination may affect adversely in the market and its participants. The implementation of new or use of existing macroprudential instruments in the context of non bankig financial institutions (investment funds, insurance companies, pension funds, investment firms) are explored concerning their activities in the negotiable financial instruments market.", "corpus_id": 169280627, "venue": "", "year": 2017, "author_names": [ "I S Kravchuk" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "108990116", "title": "The End of Negotiable Instruments: Bringing Payment Systems Law Out of the Past", "abstract": "Introduction Chapter 1 The Sorry State of Modern Payment Systems Law Chapter 2 The Puzzling Persistence of the Law of Checks and Notes Chapter 3 Paperless Paper Chapter 4 Reports of the Death of the Holder in Due Course Doctrine Are Greatly Exaggerated. Chapter 5 A Visit to the Museum of Negotiable Instruments Law Chapter 6 The Bank Always Loses Chapter 7 Are Checks Ever Transferred? Chapter 8 What Would a Modern Law of Promissory Notes Look Like? Chapter 9 What Would a Modern Law of Checks Look Like? Chapter 10 Overcoming the Past Index", "corpus_id": 108990116, "venue": "", "year": 2011, "author_names": [ "James Steven Rogers" ], "n_citations": 5, "n_key_citations": 1, "score": 1 }, { "doc_id": "211409473", "title": "A Treatise on the Law of Negotiable Instruments", "abstract": "", "corpus_id": 211409473, "venue": "", "year": 2012, "author_names": [ "John W Daniel" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "152639381", "title": "The Law of Negotiable Instruments: Statutes, Cases and Authorities", "abstract": "", "corpus_id": 152639381, "venue": "", "year": 2010, "author_names": [ "Ernest Wilson Huffcut", "Frederick Diamond Colson" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "153739201", "title": "Negotiable Instruments Law", "abstract": "The Negotiable Instruments Law has now been adopted by twenty states' as well as for the District of Columbia, and there is little doubt that in a very few years, at the longest, it will be the law throughout this country. Aside from the importance of the subject with which it deals, the act claims a peculiar interest as being the first important step taken in this country towards codifying any branch of the law. In 1878, Judge Chalmers published his digest of the law relating to bills of exchange, in the preparation of which he read through all the English cases (some twenty five hundred in number) beginning with the first reported case in 1603. Where there was a dearth of English authority, he states that he had recourse to the American decisions and to the usages among bankers and", "corpus_id": 153739201, "venue": "", "year": 1916, "author_names": [ "Louis C Haggerty" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "39678200", "title": "Revision of the Negotiable Instruments Law", "abstract": "In the latter part of 1926, the National Conference of Commissioners on Uniform State Laws, through its Committee on Amendments of Uniform Acts, undertook the preparation of a series of amendments to the Negotiable Instruments Law. The time for such action seemed particularly appropriate inasmuch as the act had then been adopted by all of the states, though with minor variations in text in many cases. There had been a considerable amount of experience with the statute; for in the principal commercial states it had been in effect from twenty to thirty years. That there was need for some action to harmonize the conflicting interpretations which had developed, and possibly to reconcile the variations in provisions of the different statutes, was scarcely open to question, if the original objective, a uniform body of law relating to negotiable paper, was to be realized to the extent reasonably possible. The committee designated Professor Williston to undertake the work, a singularly happy appointment. At the outset a question arose in the committee as to whether a comprehensive revision of the act should be undertaken, the alternative being to draft only such amendments as would be necessary to correct the more serious conflicts. Practically, there is much force in the argument for the latter alternative, as it is a long and difficult process to get uniform legislative action in each of the forty eight states. This argument works both ways, however, as it has been suggested that any action at this time, if it must be adopted in all states before any other steps are taken, would postpone for many years the drafting of any additional amendments that might later seem desirable. Thus the attempt at the beginning to agree upon a formula of comprehensive or limited revision was probably waste motion. Of first importance would be a survey of all points regarded as perhaps needing amendment. There is, however, room for considerable discussion as to the character of any revision, whether limited or comprehensive in scope. Should it be confined, in the interest of greater clarity and accuracy of expression, to the correction of verbal inconsistencies in the present act? There are many of these, as would no doubt be true in the case of any piece of legislation covering so involved a subject. But notwithstanding these difficulties,", "corpus_id": 39678200, "venue": "", "year": 1928, "author_names": [ "Roscoe B Turner" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "150010075", "title": "The Negotiable Instruments Law", "abstract": "The Negotiable Instruments Law has now been adopted by twenty states' as well as for the District of Columbia, and there is little doubt that in a very few years, at the longest, it will be the law throughout this country. Aside from the importance of the subject with which it deals, the act claims a peculiar interest as being the first important step taken in this country towards codifying any branch of the law. In 1878, Judge Chalmers published his digest of the law relating to bills of exchange, in the preparation of which he read through all the English cases (some twenty five hundred in number) beginning with the first reported case in 1603. Where there was a dearth of English authority, he states that he had recourse to the American decisions and to the usages among bankers and", "corpus_id": 150010075, "venue": "", "year": 1920, "author_names": [ "A M Kidd", "Joseph Doddridge Brannan" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "91681125", "title": "High density three dimensional morphometric analyses support conserved static (intraspecific) modularity in caecilian (Amphibia: Gymnophiona) crania", "abstract": "Ashleigh F. Marshall, Carla Bardua, David J. Gower, Mark Wilkinson, Emma Sherratt and Anjali Goswami", "corpus_id": 91681125, "venue": "Biological Journal of the Linnean Society", "year": 2019, "author_names": [ "Ashleigh F Marshall", "Carla Bardua", "David J Gower", "Mark Wilkinson", "Emma Sherratt", "Anjali Goswami" ], "n_citations": 25, "n_key_citations": 2, "score": 1 }, { "doc_id": "145952478", "title": "A new species of Microcaecilia (Amphibia: Gymnophiona: Caeciliidae) from Guyana", "abstract": "A new species of caeciliid caecilian, Microcaecilia iyob sp. nov. is described based on a single specimen from Guyana that was previously assigned to M. unicolor (Dumeril, 1864) a species known with certainty only from French Guiana. The new species differs from other Microcaecilia in its pattern of annulation and/or major features of the dentition.", "corpus_id": 145952478, "venue": "", "year": 2019, "author_names": [ "M Wilkinson", "Philippe J R Kok" ], "n_citations": 5, "n_key_citations": 0, "score": 1 }, { "doc_id": "198241739", "title": "Phylogenetic systematics of the Neotropical caecilian amphibian Luetkenotyphlus (Gymnophiona: Siphonopidae) including the description of a new species from the vulnerable Brazilian Atlantic Forest", "abstract": "Abstract Luetkenotyphlus brasiliensis has been described 168 years ago, being the only known species of that genus up till date. However, the diversity of caecilian amphibians surprises once again, with the discovery of a new species of Luetkenotyphlus from remnants of the critically threatened Atlantic Forest, in the State of Espirito Santo, Brazil. Herein we describe the new species on the basis of its morphology but also present a molecular phylogeny based on three genes (12S, 16S and COI) including more taxa of Siphonopidae together in a same phylogeny than the previous studies. Our phylogeny did not support the monophyly of Siphonops as currently defined, because Siphonops insulanus was recovered within Luetkenotyphlus, forming a monophyletic group, sister to a clade of three Siphonops spp. We have examined a specimen of S. insulanus from the type locality (Ilha de Sao Sebastiao, Sao Paulo, Brazil) revealing a shorter premaxillary maxillary tooth series in comparison to Siphonops. Based on our results, we also allocated S. insulanus to Luetkenotyphlus in order to avoid paraphyly.", "corpus_id": 198241739, "venue": "Zoologischer Anzeiger", "year": 2019, "author_names": [ "Adriano Oliveira Maciel", "Thiago Morais de Castro", "Marcelo Jose Sturaro", "Izadora Emanuelle Costa Silva", "Jordana Guimaraes Ferreira", "R C dos Santos", "Barbara Risse-Quaioto", "Bruno Alenkine Barboza", "Jane C F Oliveira", "Iracilda Sampaio", "Horacio Schneider" ], "n_citations": 5, "n_key_citations": 0, "score": 1 }, { "doc_id": "90886884", "title": "Life history and reproduction of the neotropical caecilian Siphonops annulatus (Amphibia, Gymnophiona, Siphonopidae) with special emphasis on parental care", "abstract": "", "corpus_id": 90886884, "venue": "", "year": 2019, "author_names": [ "Carlos Jared", "Pedro Luiz Mailho-Fontana", "Simone G S Jared", "Alexander Kupfer", "Jacques Hubert Charles Delabie", "M Wilkinson", "Marta Marta Antoniazzi" ], "n_citations": 3, "n_key_citations": 2, "score": 1 }, { "doc_id": "207959438", "title": "A new species of Caecilia (Gymnophiona, Caeciliidae) from the Magdalena valley region of Colombia", "abstract": "Abstract A new species of the genus Caecilia (Caeciliidae) from the western foothills of the Serrania de los Yariguies in Colombia is described. Caecilia pulchraserranasp. nov. is similar to C. degenerata and C. corpulenta but differs from these species in having fewer primary annular grooves and a shorter body length. With this new species, the currently recognized species in the genus are increased to 35. Mitochondrial DNA sequences, including newly sequenced terminals representing two additional, previously unanalyzed species, corroborate the phylogenetic position of the new species within Caecilia and the monophyly of the genus. This analysis also included newly sequenced terminals of Epicrionops aff. parkeri (Rhinatrematidae) and trans Andean Microcaecilia nicefori (Siphonopidae) Evidence was found for the non monophyly of the family Siphonopidae and the siphonopid genera Microcaecilia and Siphonops. The implications of these results for caecilian systematics are discussed and the status of the trans Andean populations of Caecilia degenerata is commented upon.", "corpus_id": 207959438, "venue": "ZooKeys", "year": 2019, "author_names": [ "Andres R Acosta-Galvis", "Mauricio Torres", "Paola Pulido-Santacruz" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "214534801", "title": "The use of visible implant elastomer to permanently identify caecilians (Amphibia: Gymnophiona)", "abstract": "Identifying individual animals is important for studying populations and for the optimal management of individual animals in captivity. In the absence of natural markings that discriminate individuals, such identification may require animals to be marked by researchers. Amphibians are challenging subjects to mark due to their small size and sensitive, permeable and frequently shed skin. Visible Implant Elastomer (VIE) has been widely used to mark amphibians, but no long term study has validated this technique in caecilian amphibians. We anaesthetised and attempted to VIE mark seven Herpele squalostoma and one Microcaecilia unicolor held at ZSL London Zoo. No specimens suffered ill effects of anaesthesia or VIE injection, but mean persistence of marks was 191 days in H. squalostoma suggesting that this marking technique is not suitable for identifying individuals of this species in the long term. We were unable to inject VIE into the M. unicolor and/or the elastomer was not visible through the darkly pigmented skin. Further research is required to develop methods for long term marking of a diversity", "corpus_id": 214534801, "venue": "", "year": 2019, "author_names": [ "Benjamin Tapley" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "91740138", "title": "Morphology and postnatal ontogeny of the dentition of Chthonerpeton indistinctum (Gymnophiona: Typhlonectidae)", "abstract": "", "corpus_id": 91740138, "venue": "", "year": 2019, "author_names": [ "Mariana Chuliver", "Agustin Scanferla" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "52973579", "title": "Musculoskeletal development of the Central African caecilian Idiocranium russeli (Amphibia: Gymnophiona: Indotyphlidae) and its bearing on the re evolution of larvae in caecilian amphibians", "abstract": "Few detailed accounts of the developmental morphology of caecilian amphibians exist and recent studies have highlighted problems concerning the homology of some skull elements. We investigated the embryonic and post hatching development of the skeleton and musculature of Idiocranium russeli, a possibly miniaturized caecilian endemic to Cameroon. Idiocranium has been suggested to be direct developing; our results strongly support this hypothesis. The external morphology of different embryonic stages, the ossification sequence, and the configuration of the cranial muscles of I. russeli indicate heterochronic shifts of adult traits into embryonic development, as well as the loss or absence of various larval and metamorphic traits. For example, the tentacle, which plesiomorphically develops during metamorphosis, is already fully developed in late embryos. The maxilla and the palatine, which fuse to form the maxillopalatine (during metamorphosis in most biphasic species) fuse well before hatching. Muscles exclusive to the larva, such as the m. interhyoideus and m. hyomandibularis, are absent during development, whereas adult muscles including the m. genioglossus and m. cephalodorsosubpharyngeus, form during embryonic development. A larval ceratobranchial IV is present and fuses to the ceratobranchial III very early in ontogeny. In its near complete absence of larval traits during development, I. russeli resembles the Indian indotyphlid Gegeneophis ramaswamii; this similarity complicates a straightforward explanation for the re evolution of free living larvae in Seychelles indotyphlid caecilians.", "corpus_id": 52973579, "venue": "Zoomorphology", "year": 2018, "author_names": [ "Tobias Theska", "Mark Wilkinson", "David J Gower", "Hendrik Muller" ], "n_citations": 7, "n_key_citations": 0, "score": 0 }, { "doc_id": "91613252", "title": "Regurgitating Micrurus corallinus (Serpentes, Elapidae) reveals another record for the rare Caecilia Chthonerpeton aff. braestrupi (Gymnophiona, Typhlonectidae)", "abstract": "fossorial and medium sized elapid (SVL 213 mm to 950 mm) (Marques et al. 2001, Pontes Rocha, 2008, Silva Jr et al. 2016) It can be identified by the tricolored monad pattern (Campbell Lamar, 2004, Silva Jr et al. 2016) and is quite common in its area of occurrence (Marques et al. 2001, Argolo, 2004, Pontes Rocha, 2008) This snake can be found in parts of Argentina, Paraguay, and Uruguay. In Brazil, it occurs in the Atlantic Forest in the Southern and Southeastern states, and in forest fragments of the Northeast States (Roze, 1967, Silva Nunes, 1996, Freire, 2001, Argolo, 2004, Campbell Lamar, 2004, Wallach et al. 2014, Silva Jr et al. 2016) Similar to other congeneric species, the diet of Micrurus corallinus is composed by elongated prey (Roze, 1983; Marques Sazima, 1997; Silva Jr et al. 2016; Silva Soares Castro, 2016; Banci et al. 2017) Chthonerpeton aff. braestrupi is a Gymnophiona which belongs to the Family Typhlonectidae. This species is currently under the description process and so far had only been recorded for the region of Paracambi (State of Rio de Janeiro, Southeastern Brazil) (Rocha et al. 2004) In general, Gymnophiona are poorly known due to their secretive habit and difficulty in collecting, so information about natural history, taxonomy and even areas of occurrence are scarce in the literature (Nussbaum et al. 1987; Silva et al. 2003) Beside this, Chthonerpeton species are believed to have cryptozoic, fossorial and semi aquatic habits (Nussbaum et al. 1987; Napoli et al. 2015) Here, we report a case of predation of Chthonerpeton aff. braestrupi by Micrurus corallinus as well as a new occurrence site for the Amphibian for the State of Rio de Janeiro, Southeastern Brazil. On December 13, 2016, at 8:30 p.m. at the \"Parque Arqueologico e Ambiental de Sao Joao Marcos\" Municipality of Rio Claro, State of Rio de Janeiro, Brazil 22.8002o S, 44.0289o W; 439 m a.s.l. WGS 84) We collected a night active specimen of Micrurus corallinus (MNRJ 26777, male, SVL 310 mm, TL 46 mm) During the photograph section, this snake regurgitated a specimen of Chthonerpeton aff. braestrupi (MNRJ 91958, undetermined sex, Total length =190 mm) (Figure 1) The specimen had been ingested head first, so its anterior part was partially digested. However, identification was possible by the presence and number of annuli and the coloration pattern with a dark back and clear womb (see Nussbaum et al. 1987) Marques Sazima (1997) studied the natural history of Micrurus corallinus and found as diet Herpetology Notes, volume 11: 663 665 (2018) (published online on 24 August 2018)", "corpus_id": 91613252, "venue": "", "year": 2018, "author_names": [ "Rodrigo C Gonzalez", "Daniel Faustino Gomes", "Pedro Cardoso Prado", "Renato Quinhones", "Rodrigo de Salles" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "58607028", "title": "A new species of Brasilotyphlus (Gymnophiona: Siphonopidae) and a contribution to the knowledge of the relationship between Microcaecilia and Brasilotyphlus.", "abstract": "A third species of Brasilotyphlus, a siphonopid caecilian, is described based on six specimens from two twin mountains in Roraima state, northern Brazil. Brasilotyphlus dubium sp. nov. differs from all other congeners in having a combination of 123 129 primary annuli and 9 16 secondary annular grooves. The first molecular data were generated and analyzed for Brasilotyphlus, and the genus was recovered as monophyletic and nested within a paraphyletic Microcaecilia. The extent of genetic and taxonomic sampling, and moderate phylogenetic support are not considered sufficient enough to place Brasilotyphlus in the synonymy of Microcaecilia.", "corpus_id": 58607028, "venue": "Zootaxa", "year": 2018, "author_names": [ "Larissa Lima Correia", "Pedro M Sales Nunes", "Tony Gamble", "Adriano Oliveira Maciel", "Sergio Marques-Souza", "Antoine Fouquet", "Miguel Trefaut Rodrigues", "Tami Mott" ], "n_citations": 2, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "219534867", "title": "Psychological resilience during the COVID 19 lockdown", "abstract": "Abstract Some individuals are more psychologically resilient to adversity than others, an issue of great importance during the emerging mental health issues associated with the COVID 19 pandemic. To identify factors that may contribute to greater psychological resilience during the first weeks of the nation wide lockdown efforts, we asked 1,004 U.S. adults to complete assessments of resilience, mental health, and daily behaviors and relationships. Average resilience was lower than published norms, but was greater among those who tended to get outside more often, exercise more, perceive more social support from family, friends, and significant others, sleep better, and pray more often. Psychological resilience in the face of the pandemic is related to modifiable factors.", "corpus_id": 219534867, "venue": "Psychiatry Research", "year": 2020, "author_names": [ "William D S Killgore", "Emily C Taylor", "Sara A Cloonan", "Natalie S Dailey" ], "n_citations": 95, "n_key_citations": 4, "score": 1 }, { "doc_id": "220846918", "title": "Psychological resilience, depression, anxiety, and somatization symptoms in response to COVID 19: A study of the general population in China at the peak of its epidemic", "abstract": "Abstract Rationale Psychological resilience is characterized as the ability to respond to extreme stress or trauma or adverse experience successfully. While the relation between public emergencies and psychological distress is well known, research on therelationship between psychological resilience and mental health is very limited during the outbreak of public health emergencies. Objective This research investigated the relationship between psychological resilience and mental health (depression, anxiety, somatization symptoms) among the general population in China. Method Psychological resilience, depression, anxiety, and somatization symptoms of 1,770 Chinese citizens were investigated during the epidemic peak of coronavirus disease 2019 (COVID 19) (23rd February 2020 to 2nd March 2020) The analyses were done through the Connor Davidson Resilience Scale (CD RISC) the Patient Health Questionnaire 9 (PHQ 9) the Generalized Anxiety Disorder 7 (GAD 7) scale, and the Patient Health Questionnaire 15 (PHQ 15) scale. Results The prevalence of depression, anxiety, somatization symptoms was found to be 47.1% 31.9% 45.9% respectively, among all participants. From them, 18.2% showed moderate to severe symptoms of depression, 8.8% showed moderate to severe symptoms of anxiety, and 16.6% showed moderate to severe symptoms of somatization. Psychological resilience was negatively correlated with depression (standardized B 0.490, P<0.001) anxiety (standardized B 0.443, P<0.001) and somatization symptom scores (standardized B 0.358, P<0.001) while controlling for confounding factors. Analysis of the three factor resilience structure showed that strength and tenacity were correlated with depression (standardized B 0.256, P<0.001; standardized B 0.217, P<0.001) anxiety (standardized B 0.268, P<0.001; standardized B 0.147, P<0.001) and somatization symptoms (standardized B 0.236, P<0.001, standardized B 0.126, P<0.01) Conclusions Our results suggest that there is a high prevalence of psychological distresses among the general population at the peak of the COVID 19 epidemic in China, which is negatively correlated with resilience. Psychological resilience represents an essential target for psychological intervention in a public health emergency.", "corpus_id": 220846918, "venue": "Social Science Medicine", "year": 2020, "author_names": [ "Liuyi Ran", "Wo Wang", "Ming Ai", "Yiting Kong", "Jian-mei Chen", "Li Kuang" ], "n_citations": 64, "n_key_citations": 2, "score": 0 }, { "doc_id": "159108913", "title": "Psychological resilience, organizational resilience and life satisfaction in tourism firms: insights from the Canterbury earthquakes", "abstract": "ABSTRACT From a socio ecological systems perspective, resilience is dynamic, multi dimensional and multi scale. This study provides evidence of the relationship between different types of resilience (psychological, employee and organizational resilience) affecting the recovery of tourism organizations after the Canterbury earthquakes in 2010/2011. A survey of tourism business owners and employees (managers) was undertaken five years after the February 2011 earthquakes. Results show significant and positive relationships between psychological and employee resilience. Further, employee resilience contributes to both life satisfaction of tourism business operators and organizational resilience. Life satisfaction of business owners and managers contributes to organizational resilience. Implications for the well being of tourism business owners and managers, and ways of strengthening both psychological and organizational resilience are suggested.", "corpus_id": 159108913, "venue": "Current Issues in Tourism", "year": 2019, "author_names": [ "Girish Prayag", "Sam Spector", "Caroline Orchiston", "Mesbahuddin Chowdhury" ], "n_citations": 36, "n_key_citations": 1, "score": 0 }, { "doc_id": "216645246", "title": "Battle Buddies: Rapid Deployment of a Psychological Resilience Intervention for Health Care Workers During the Coronavirus Disease 2019 Pandemic", "abstract": "The outbreak of the coronavirus disease 2019 (COVID 19) and its rapid global spread have created unprecedented challenges to health care systems. Significant and sustained efforts have focused on mobilization of personal protective equipment, intensive care beds, and medical equipment, while substantially less attention has focused on preserving the psychological health of the medical workforce tasked with addressing the challenges of the pandemic. And yet, similar to battlefield conditions, health care workers are being confronted with ongoing uncertainty about resources, capacities, and risks; as well as exposure to suffering, death, and threats to their own safety. These conditions are engendering high levels of fear and anxiety in the short term, and place individuals at risk for persistent stress exposure syndromes, subclinical mental health symptoms, and professional burnout in the long term. Given the potentially wide ranging mental health impact of COVID 19, protecting health care workers from adverse psychological effects of the pandemic is critical. Therefore, we present an overview of the potential psychological stress responses to the COVID 19 crisis in medical providers and describe preemptive resilience promoting strategies at the organizational and personal level. We then describe a rapidly deployable Psychological Resilience Intervention founded on a peer support model (Battle Buddies) developed by the United States Army. This intervention the product of a multidisciplinary collaboration between the Departments of Anesthesiology and Psychiatry Behavioral Sciences at the University of Minnesota Medical Center also incorporates evidence informed \"stress inoculation\" methods developed for managing psychological stress exposure in providers deployed to disasters. Our multilevel, resource efficient, and scalable approach places 2 key tools directly in the hands of providers: (1) a peer support Battle Buddy; and (2) a designated mental health consultant who can facilitate training in stress inoculation methods, provide additional support, or coordinate referral for external professional consultation. In parallel, we have instituted a voluntary research data collection component that will enable us to evaluate the intervention's effectiveness while also identifying the most salient resilience factors for future iterations. It is our hope that these elements will provide guidance to other organizations seeking to protect the well being of their medical workforce during the pandemic. Given the remarkable adaptability of human beings, we believe that, by promoting resilience, our diverse health care workforce can emerge from this monumental challenge with new skills, closer relationships, and greater confidence in the power of community.", "corpus_id": 216645246, "venue": "Anesthesia and analgesia", "year": 2020, "author_names": [ "C Sophia Albott", "Jeffrey R Wozniak", "Brian P McGlinch", "Michael H Wall", "Barbara S Gold", "Sophia Vinogradov" ], "n_citations": 71, "n_key_citations": 2, "score": 0 }, { "doc_id": "158072153", "title": "Psychological Resilience and Its Downstream Effects for Business Survival in Nascent Entrepreneurship", "abstract": "While scholars frequently argue that nascent entrepreneurs will be more successful if they are resilient, this assumption remains untested and the mechanisms for its potential benefits are unknown. To establish the utility of this psychological construct, we draw from Fredrickson's broaden and build theory (1998) to develop and test theory on the processes through which psychological resilience influences first time entrepreneurs' business survival. Results of a time lagged study of nascent entrepreneurs followed over a 2 year period support this theory, highlighting the cognitive and behavioral ways in which psychological resilience helps nascent entrepreneurs become less vulnerable to their stressful circumstances.", "corpus_id": 158072153, "venue": "", "year": 2020, "author_names": [ "Ingrid C Chadwick", "Jana L Raver" ], "n_citations": 17, "n_key_citations": 2, "score": 0 }, { "doc_id": "222352994", "title": "Psychological Resilience of Healthcare Professionals During COVID 19 Pandemic", "abstract": "The COVID 19 pandemic as a public health issue has spread to the rest of the world. Although the wellbeing and emotional resilience of healthcare professionals are key components of continuing healthcare services during the COVID 19 pandemic, healthcare professionals have been observed in this period to experience serious psychological problems and to be at risk in terms of mental health. Therefore, this study aims to probe psychological resilience of healthcare workers. The findings of this study showed that in order to raise psychological resilience of healthcare professionals working during the COVID 19 pandemic their quality of sleep, positive emotions and life satisfaction need to be enhanced. Psychological resilience levels of healthcare workers in their later years were found to be higher. Doctors constitute the group with the lowest levels of psychological resilience among healthcare workers. The current study is considered to have contributed to the literature in this regard. Primary needs such as sleep which are determinants of quality of life, life satisfaction and psychological resilience should be met.", "corpus_id": 222352994, "venue": "Psychological reports", "year": 2020, "author_names": [ "Faruk Bozdag", "Naif Ergun" ], "n_citations": 25, "n_key_citations": 2, "score": 1 }, { "doc_id": "214681749", "title": "Religiosity, Psychological Resilience, and Mental Health Among Breast Cancer Patients in Kingdom of Saudi Arabia", "abstract": "Objectives: This study aimed to investigate the correlations of religiosity and psychological resilience with mental health among cancer patients and to examine whether religiosity and psychological resilience can predict mental health. Method: The sample consisted of 329 patients. Researchers applied Islamic Religiosity Scale, Wagnild and Young Resilience Scale, and the scale of Hospital Anxiety and Depression. Results: The results showed that there are positive, statistically significant correlations between religiosity and psychological resilience, while there were negative, statistically significant correlations of religiosity and psychological resilience with mental health. And there are correlations between the alternative therapeutic interventions currently used to religiosity and psychological resilience, while there were no statistically significant correlations between alternative therapeutic interventions that the patient will use in the future to religiosity and psychological resilience. The results also revealed the possibility of predicting mental health through religiosity and psychological resilience. Conclusion: These results emphasized the importance of increased religiosity and psychological resilience among cancer patients.", "corpus_id": 214681749, "venue": "Breast cancer basic and clinical research", "year": 2020, "author_names": [ "Nawal A Al Eid", "Mohammed M J Alqahtani", "Khaldoun Marwa", "Boshra A Arnout", "Hajar S Alswailem", "Al Anoud Al Toaimi" ], "n_citations": 8, "n_key_citations": 0, "score": 0 }, { "doc_id": "219637097", "title": "Resilience strategies to manage psychological distress amongst healthcare workers during the COVID 19 pandemic: a narrative review", "abstract": "The COVID 19 pandemic marks an extraordinary global public health crisis unseen in the last century, with its rapid spread worldwide and associated mortality burden. The longevity of the crisis and disruption to normality is unknown. With COVID 19 set to be a chronic health crisis, clinicians will be required to maintain a state of high alert for an extended period. The support received before and during an incident is likely to influence whether clinicians experience psychological growth or injury. An abundance of information is emerging on disease epidemiology, pathogenesis and infection control prevention. However, literature on interventions for supporting the psychological well being of healthcare workers during disease outbreaks is limited. This article summarises the available management strategies to increase resilience in healthcare workers during the COVID 19 pandemic and beyond. It focuses on self care and organisational justice. It highlights various individual as well as organisational strategies. With the success of slowing disease spread in many countries to date, and reduced work load due to limitations on elective surgery in many institutions, there is more time and opportunity to be pro active in implementing measures to mitigate or minimise potential adverse psychological effects and improve, restore and preserve the well being of the workforce now and for years to come. The purpose of this review is to review available literature on strategies for minimising the psychological impact of the COVID 19 pandemic on clinicians and to identify pro active holistic approaches which may be beneficial for healthcare workers both for the current crisis and into the future.", "corpus_id": 219637097, "venue": "Anaesthesia", "year": 2020, "author_names": [ "Chloe Heath", "Aine Sommerfield", "Britta S von Ungern-Sternberg" ], "n_citations": 84, "n_key_citations": 4, "score": 1 }, { "doc_id": "212822113", "title": "Psychological resilience to suicidal experiences", "abstract": "Abstract Psychological resilience, in general, and in particular when applied to suicidal experiences, lacks conceptual clarity. Here, we argue that psychological models of resilience to suicidal triggers and suicidal experiences must be grounded in the lived experiences of experts by experience. There are, a least, five approaches to understanding resilience to suicidal experiences which should be systematically investigated. The dominant methodological approach is lacking in that it is simply uni dimensional, i.e. represented by two poles of resilient and non resilient; at risk and not at risk. More sophisticated models of psychological resilience to suicidal experience should be championed which span cultural, societal, and individual levels of understanding. Such approaches should be investigated using convergent qualitative, quantitative and mixed methods studies. In addition, more complex, diary study methods should be used creatively in this area. It is also important that approaches to understanding resilience to suicidality should be sensitive to issues experienced by mental health professionals.", "corpus_id": 212822113, "venue": "", "year": 2020, "author_names": [ "Patricia A Gooding", "Kamelia Harris" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "226658003", "title": "Individual Differences in Psychological Resilience", "abstract": "Psychological resilience is invisible and a very complicated concept. Various resilience factors have been identified in previous studies. An individual's resiliency was quantified by questionnaire scale, and many studies reported correlation with personality and changes with age and life events. Furthermore, many programs were developed aimed to expand resiliency through intervention and human interaction. On the other hand, we must be careful not to overlook the diversity of resilience. However, the impact of these factors in inducing resiliency varies from person to person. Even if the same stressful situation occurs, the kind of recovery that is to be aimed at varies from person to person; although the resilience may be externally invisible, it shows the possibility that the person has adopted a resilience process. In addition, the labeling of a level as adversity or adaptation depends on culture, environment, and context. While psychological resilience can be considered as a personal ability and personality, it is also necessary to consider it as a desirable characteristic in the society in which an individual lives.", "corpus_id": 226658003, "venue": "", "year": 2020, "author_names": [ "Mari Hirano" ], "n_citations": 0, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "16946753", "title": "Citizens' attitudes towards e government presence on social networks (e government 2.0) An empirical study", "abstract": "Government agencies are increasingly looking to leverage social media usage to improve governmental services quality and enable greater citizen engagement. Publicly available social media sites such as Facebook and Twitter, which are widely available to governments' employees and citizens with Internet access, provide governments with attractive options for meeting such new objectives. This research explored the literature in this area and tried to develop an instrument to measure citizens' attitudes toward government 2.0 based on four main variables: perceived value of e government, e government usage intensity, general trust in government, general Internet usage. A random moderate sample of Jordanian citizens was used to test the instrument.", "corpus_id": 16946753, "venue": "2016 7th International Conference on Information and Communication Systems (ICICS)", "year": 2016, "author_names": [ "Rawan T Khasawneh", "Malek M Tarawneh" ], "n_citations": 7, "n_key_citations": 1, "score": 1 }, { "doc_id": "231823892", "title": "Evolutionary Game Analysis of Harmful Information Governance in Social Networks with Public Participation", "abstract": "This paper uses evolutionary game theory as the main research method to depict the dynamic evolution of strategic choices between government regulatory agencies and social network platforms with public participation, constructs a 'trinity' social network harmful information multi dimensional collaborative governance system.", "corpus_id": 231823892, "venue": "2020 IEEE 3rd International Conference on Electronic Information and Communication Technology (ICEICT)", "year": 2020, "author_names": [ "Zi-fu Fan", "Kexin Fan", "Yiyu Tian", "Wei Zhang" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "13812360", "title": "Towards Trust based Decentralized Ad Hoc Social Networks", "abstract": "Social Media has transformed modern day society. It can be argued that one of the main drivers behind this transformation are novel ways to effectively distribute content in a highly targeted fashion and at scale. Recently, this effectiveness has come under attack based on new phenomena known as Fake News, Filter Bubble and Echo Chambers. The public debate about the impact of these phenomena on modern day society ranges from demanding a complete social media shutdown to government intervention and censorship. Furthermore, it appears that Social Media Platform providers are not sure what countermeasures are needed to address these new challenges. The main concern is that Black Mirror like scenarios will emerge simply by allowing privately held companies decide what content is conforming to public norms leading to a distortion of values. This paper presents an alternative solution by focusing on empowering meaningful relationships and not content engagement. The main motivation behind the proposed solution is to create social networks that follow a Trust by Design paradigm. This paper introduces and discusses the above mentioned challenges and presents a novel new social media concept seeking to overcome current challenges.", "corpus_id": 13812360, "venue": "WWW", "year": 2018, "author_names": [ "Kevin Koidl" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "56597002", "title": "A study on the security of public opinion in social networks", "abstract": "In this paper, we consider the security problem of public opinions when it has terrorists who try to guide people's opinions to malicious ones in social network. First, we propose an opinion dynamics model, which is composed by the suspects, the defenders and the masses. In this model, a set of suspects influenced by the terrorists at the beginning send malicious opinions to their neighbors. Similarly, the defenders spread the government's opinion to resist people's opinions following that of terrorists. Second, we consider the random communication among neighbours, where people can not interact with each other every time. At the last, we provide a sufficient condition to ensure the convergence of the expected opinions of the system. Finally, we provide some numerical examples to illustrate all the derived results.", "corpus_id": 56597002, "venue": "2018 15th International Conference on Control, Automation, Robotics and Vision (ICARCV)", "year": 2018, "author_names": [ "Long Gao", "Wen Yang", "Mengling Wang" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "9199716", "title": "Could Data from Location Based Social Networks Be Used to Support Urban Planning?", "abstract": "A great quantity of information is required to support urban planning. Usually there are many (not integrated) data sources, originating from different government bodies, in distinct formats and variable properties (e.g. reliability, completeness) The effort to handle these data, integrate and analyze them is high, taking to much time for the information to be available to help decision making. We argue that data from location based social networks (LBSN) could be used to provide useful information in reasonable time, despite several limitations they have. To asses this, as a case study, we used data from different LBSN to calculate the Local Availability Index (IOL) for a Brazilian city. This index is part of a methodology to estimate quality of urban life inside cities and is used to support urban planning. The results suggest that data from LBSN are useful and could be used to provide insights for local governments.", "corpus_id": 9199716, "venue": "WWW", "year": 2017, "author_names": [ "Rodrigo Smarzaro", "Tiago Lima", "Clodoveu A Davis" ], "n_citations": 11, "n_key_citations": 0, "score": 0 }, { "doc_id": "216104523", "title": "Factors for Continued Interaction between the Kuwaiti Government and Citizens via Social Media Networks: A Proposed Model", "abstract": "With advancements in social networking, there is a need for transparency in the changing nature of the interaction between governments and citizens. Recent studies have discovered that the perception of government transparency greatly influences the interaction between citizens and governments and citizen trust in government via social media networks. Surveys indicate that Kuwaiti citizens lack interaction with their governments on social media networks. This problem is not straightforward to solve; Europe also faces the same issue. Governments can take advantage of social media networking to meet their operational objectives and improve service quality. Therefore, a model is needed that increases the interaction and communication between citizens and their governments. This paper presents a new model for factors influencing the continued interaction between the Kuwaiti government and its citizens via social networks (see Figure 2) based on Delone and McLean information system (IS) success model (2003) combined with the unified theory of acceptance and use of technology and both the trust and loyalty factors.", "corpus_id": 216104523, "venue": "2019 6th International Conference on Research and Innovation in Information Systems (ICRIIS)", "year": 2019, "author_names": [ "Husein Alenzi", "Suraya Miskon" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "23953311", "title": "Ego clustering based propagation prediction of time series in social networks", "abstract": "Online social networks are now recognized as an important platform for propagating information. Recently, a lot of efforts are made to predict the popularity of social information, to help the government and companies effectively control and guide public opinions. Information propagation in social networks exist many different temporal patterns, which are useful reference for predicting the future spreading of news. Considering temporal patterns are related to the network structure and information content, some researchers formulated a time series clustering problem to obtain temporal patterns in social networks. Previous clustering based algorithms take each cluster center as a typical propagation pattern, and then classify prediction object into its nearest neighbor cluster. However, the nearest pattern can not fit the prediction object very precisely. This paper proposes a novel E CTPM (Ego Clustering based Temporal Prediction Model) E CTPM utilizes the prediction object itself as a fixed cluster center, which can attract the most similar time series into one cluster and generate an ego pattern for the prediction object. The tailored pattern fits the prediction object well, so it is suitable to indicate the future propagation. Experiments are carried on twitter and phrase datasets, with the results that E CTPM outperforms the existing algorithms by achieving lower prediction bias and prediction variance. Meanwhile, E CTPM has general applicability, which is able to work with multiple clustering methods and avoids the prediction difference resulting from classification methods.", "corpus_id": 23953311, "venue": "2017 12th International Conference on Intelligent Systems and Knowledge Engineering (ISKE)", "year": 2017, "author_names": [ "Fei Teng", "Rong Tang", "Tianrui Li" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "35791485", "title": "An Intelligent Step to Effective e Governance in India through E Learning via Social Networks", "abstract": "According to an air quality monitoring surveydone by Greenpeace, India has PM2.5 levels, which is arguablyhigher than safety limits. It is essential to impart environmentaleducation to denizens of India. Previous solutions include usageof Mobile Apps to aid in sharing Air Quality Index as a part of E Governance initiatives. To aid Government in boosting theefficacy of E Governance service for pollution control andprovide environmental education, we intend to design anintelligent framework that utilizes social networks. In this paper, we have proposed an automated framework for pollution controlE Governance service which takes the user profiles on socialnetworks and data collected from Internet of Things (IoT) basedair pollution sensors as input. The prototype utilizes Machinelearning algorithm to avoid human intervention and socialnetworks as a platform to aid in outreaching environmentaleducation to large masses of people.", "corpus_id": 35791485, "venue": "2016 IEEE 4th International Conference on MOOCs, Innovation and Technology in Education (MITE)", "year": 2016, "author_names": [ "R Nagarathna", "R Manoranjani" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "25903913", "title": "Mobilizing scarce resource through social networks: Exploring mechanism that accelerated the growth of the Chinese PV industry", "abstract": "This paper explores how the Chinese photovoltaic (PV) industry had grown extremely fast from the middle of 2000s, and successfully dominated the world PV product market, by conducting a detailed field study on the industry cluster of Wuxi area in Jiangsu Province, which involves interviews to more than 42 persons and the questionnaire survey. Whereas prior research has tended to emphasize roles of the central government and entrepreneurial activities of major PV firms, we rather focus on processes that enabled PV firms, including small and medium ones, to get access to the resources such as technology, management know how, and skilled labors, which were critical for their growth but rare in China. Our study particularly indicates that social networks based on informal and personal relations had taken very important roles for Chinese PV firms to overcome problems derived from scarcity of such critical resources. But it also implies that this process has induced homogeneity of firms and driven intense price competition in the market. The study sheds a light on both positive and negative roles of socially embedded relations on the industrial growth in developing countries.", "corpus_id": 25903913, "venue": "2016 Portland International Conference on Management of Engineering and Technology (PICMET)", "year": 2016, "author_names": [ "Yaichi Aoshima", "Wen Cheng Wang", "Jinwei Zhu" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "33714566", "title": "Management of social networks by universities category a in ecuador", "abstract": "Universities in Ecuador face revolutionary change. The government has established sanctions and certain groupings in higher education. Fourteen universities were closed in 2012, and the rest were categorized A, B, C and D, with those in category A being the top universities and those in D being universities that do not meet all the requirements established by the Board of Evaluation, Accreditation and Quality Assurance in Higher Education (CEAACES) Within this framework, the research proposes to analyze the management of institutional social networks of category A, which includes Polytechnic National, EPN, Escuela Superior Politecnica del Litoral, ESPOL, and Universidad San Francisco de Quito, USFQ. Statistical analysis will review interaction and user engagement with the published content to demonstrate its reach and presence. USFQ is the university with greater presence and engagement on Facebook and Twitter and is making inroads into other networks frequently used by millennials.", "corpus_id": 33714566, "venue": "2016 11th Iberian Conference on Information Systems and Technologies (CISTI)", "year": 2016, "author_names": [ "Rosario Puertas Hidalgo", "Lilia Carpio Jimenez" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "236179743", "title": "COVID 19 in liver transplant recipients", "abstract": "Coronavirus disease 2019 (COVID 19) an infection caused by severe acute respiratory syndrome coronavirus type 2 (SARS CoV 2) has emerged as a serious threat to public health. Liver transplant (LT) recipients may be at increased risk of acquisition of SARS CoV 2 infection and higher morbidity and mortality due to constant contact with health care services, the use of immunosuppressants and frequent comorbidities. In the first part of this review we discuss 1) the epidemiology and risk factors for SARS CoV 2 infection in LT recipients; 2) the clinical and laboratory features of COVID 19 in this specific population, highlighting differences in presenting signs and symptoms with respect to general populations and 3) the natural history and prognostic factors in LT recipients hospitalized with COVID 19, with particular focus on the possible role of immunosuppression. Thereafter, we review the potential therapeutic options for COVID 19 treatment and prevention. Specifically, we give an overview of current practice in immunosuppressant regimen changes, showing the potential benefits of this strategy, and explore safety and efficacy issues of currently approved drugs in LT recipients. The last topic is dedicated to the potential benefits and pitfalls of vaccination.", "corpus_id": 236179743, "venue": "Journal of Liver Transplantation", "year": 2021, "author_names": [ "Juliana Piedade", "Gustavo Pereira" ], "n_citations": 9, "n_key_citations": 0, "score": 1 }, { "doc_id": "235361300", "title": "T cell mediated response to SARS CoV 2 in liver transplant recipients with prior COVID 19", "abstract": "Whether immunosuppression impairs severe acute respiratory syndrome coronavirus 2 specific T cell mediated immunity (SARS CoV 2 CMI) after liver transplantation (LT) remains unknown. We included 31 LT recipients in whom SARS CoV 2 CMI was assessed by intracellular cytokine staining (ICS) and interferon (IFN) g FluoroSpot assay after a median of 103 days from COVID 19 diagnosis. Serum SARS CoV 2 IgG antibodies were measured by ELISA. A control group of nontransplant immunocompetent patients were matched (1:1 ratio) by age and time from diagnosis. Post transplant SARS CoV 2 CMI was detected by ICS in 90.3% (28/31) of recipients, with higher proportions for IFN g producing CD4+ than CD8+ responses (93.5% versus 83.9% Positive spike specific and nucleoprotein specific responses were found by FluoroSpot in 86.7% (26/30) of recipients each, whereas membrane protein specific response was present in 83.3% (25/30) An inverse correlation was observed between the number of spike specific IFN g producing SFUs and time from diagnosis (Spearman's rho: 0.418; p value .024) Two recipients (6.5% failed to mount either T cell mediated or IgG responses. There were no significant differences between LT recipients and nontransplant patients in the magnitude of responses by FluoroSpot to any of the antigens. Most LT recipients mount detectable but declining over time SARS CoV 2 CMI after a median of 3 months from COVID 19, with no meaningful differences with immunocompetent patients.", "corpus_id": 235361300, "venue": "American journal of transplantation official journal of the American Society of Transplantation and the American Society of Transplant Surgeons", "year": 2021, "author_names": [ "Mario Fernandez-Ruiz", "Beatriz Olea", "Patricia Almendro-Vazquez", "Estela Gimenez", "Alberto Marcacuzco", "Rafael San Juan", "Iago Justo", "Jorge Calvo-Pulido", "Alvaro Garcia-Sesma", "Alejandro Manrique", "Oscar Caso", "Felix Cambra", "Paloma Talayero", "Francisco Lopez-Medrano", "Maria Jose Remigia", "Tamara Ruiz-Merlo", "Patricia Parra", "Estela Paz-Artal", "Carlos Jimenez", "Carmelo Loinaz", "David Navarro", "Rocio Laguna-Goya", "Jose Maria Aguado" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "232271498", "title": "Successful Management of COVID 19 Infection in 2 Early Post Liver Transplant Recipients", "abstract": "Background Coronavirus disease 2019 (COVID 19) has affected all facets of life and continues to cripple nations. COVID 19 has taken the lives of more than 2.1 million people worldwide (23) with a global mortality rate of 2.2% (23) Current COVID 19 treatment options include supportive respiratory care, parenteral corticosteroids, and Remdesivir. Although COVID 19 is associated with increased risk of morbidity and mortality in patients with comorbidities, the vulnerability, clinical course, optimal management, and prognosis of COVID 19 infection in patients with organ transplants has not been well described in the literature (9, 13) The treatment of COVID 19 differs, based on the organ(s) transplanted (6) Preliminary data suggested that liver transplant patients with COVID 19 did not have higher mortality rates than untransplanted COVID 19 patients (2) Table 1 depicts a compiled list of current published data on COVID 19 liver transplant patients. Most of these studies included both recent and old liver transplant patients. No distinction was made for early liver transplant patients who contract COVID 19 within their post transplant hospitalization course. This potential differentiation needs to be further explored (14) Here, we report two patients who underwent liver transplantation who acquired COVID 19 during their post transplant recovery period in the hospital. Case Descriptions Two patients who underwent liver transplant and contracted COVID 19 in the early post transplant period. Treated with hydroxychloroquine, methylprednisolone, tocilizumab and convalescent plasma. Description of their hospital course, including treatment and recovery. Conclusions The management of post liver transplant patients with COVID 19 infection is complicated. Strict exposure precaution practice following organ transplantation is highly recommended. Widespread vaccination will help with prevention, but there will continue to be patients who contract COVID 19. Therefore, continued research into appropriate treatments is still relevant and critical. A temporary dose reduction of immunosuppression and continued administration of low dose methylprednisolone, remdesivir, monoclonal antibodies, and convalescent plasma might be helpful in the management and recovery of severe COVID 19 pneumonia in post liver transplant patients. Future studies and experiences from post transplant patients are warranted to better delineate the clinical features and optimal management of COVID 19 infection in liver transplant recipients.", "corpus_id": 232271498, "venue": "Transplantation Proceedings", "year": 2021, "author_names": [ "Miles Dale", "Hiroshi Sogawa", "Seyed Mohammad Seyedsaadat", "David C Wolf", "Roxana Bodin", "Bernard Partiula", "Rajat Nog", "Rifat Latifi", "Devon John", "Gregory R Veillette", "Thomas Diflo", "Seigo Nishida" ], "n_citations": 5, "n_key_citations": 1, "score": 1 }, { "doc_id": "233920910", "title": "COVID 19 in Liver Transplant Recipients", "abstract": "Background and Aims Coronavirus disease 2019 (COVID 19) has infected over 93 million people worldwide as of January 14, 2021. Various studies have gathered data on liver transplant patients infected with COVID 19. Here, we discuss the presentation of COVID 19 in immunosuppressed patients with prior liver transplants. We also evaluate patient outcomes after infection. Methods We searched the PubMed database for all studies focused on liver transplant patients with COVID 19. Results We identified eight studies that evaluated COVID 19 infection in liver transplant patients (n=494) Hypertension was the most prevalent comorbidity in our cohort. Calcineurin inhibitors were the most common immunosuppressant medications in the entire cohort. The average time from liver transplant to COVID 19 infection in our cohort was 74.1 months. Fever and cough, at 70% and 62% respectively, were the most common symptoms in our review. In total, 50% of the patients received hydroxychloroquine as treatment for COVID 19. The next most prevalent treatment was azithromycin, given to 30% of patients in our cohort. In total, 80% of the patients were admitted to a hospital and 17% required intensive care unit level care, with 21% having required mechanical ventilation. Overall mortality was 17% in our review. Conclusions Given the immunocompromised status of liver transplant patients, more intensive surveillance is necessary for severe cases of COVID 19 infection. As liver transplantations have been restricted during the COVID 19 pandemic, further investigation is warranted for studying the risk of COVID 19 infection in liver transplant patients.", "corpus_id": 233920910, "venue": "Journal of clinical and translational hepatology", "year": 2021, "author_names": [ "Ravina Kullar", "Ankur P Patel", "Sammy Saab" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "231874117", "title": "COVID 19 in hospitalized liver transplant recipients: An early systematic review and meta analysis", "abstract": "Adverse clinical outcomes related to SARS CoV 2 infection among liver transplant (LTx) recipients remain undefined. We performed a meta analysis to determine the pooled prevalence of outcomes among hospitalized LTx recipients with COVID 19. A database search of literature published between December 1, 2019, and November 20, 2020, was performed per PRISMA guidelines. Twelve studies comprising 517 hospitalized LTx recipients with COVID 19 were analyzed. Common presenting symptoms were fever (71% cough (62% dyspnea (48% and diarrhea (28% Approximately 77% (95% CI, 61% 93% of LTx recipients had a history of liver cirrhosis. The most prevalent comorbidities were hypertension (55% diabetes (45% and cardiac disease (21% In hospital mortality was 20% (95% CI, 13% 28% and rose to 41% (95% CI, 19% 63% (P 0.00) with ICU admission. Additional subgroup analysis demonstrated a higher mortality risk in the elderly >60 65 years) (OR 4.26; 95% CI, 2.14 8.49) There was no correlation in respect to sex or time since transplant. In summary, LTx recipients with COVID 19 had a high prevalence of dyspnea and gastrointestinal symptoms. In hospital mortality was comparable to non transplant populations with similar comorbidities but appeared to be less than what is reported elsewhere for cirrhotic patients (26% 40% Importantly, the observed high case fatality in the elderly could be due to age associated comorbidities.", "corpus_id": 231874117, "venue": "Clinical transplantation", "year": 2021, "author_names": [ "Kumar Jayant", "Isabella Reccia", "Francesco Virdis", "Jordan S Pyda", "Piotr J Bachul", "Diego di Sabato", "Rolf N Barth", "John Fung", "Talia B Baker", "Piotr Witkowski" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "231726723", "title": "Covid 19 in liver transplant recipients: the French SOT COVID registry", "abstract": "Background Notwithstanding the ongoing coronavirus disease 2019 (Covid 19) pandemic, information on its clinical presentation and prognosis in organ transplant recipients remains limited. The aim of this registry based observational study was to report the characteristics and clinical outcomes of liver transplant (LT) recipients included in the French nationwide Registry of Solid Organ Transplant Recipients with Covid 19. Methods COVID 19 was diagnosed in patients who had a positive PCR assay for SARS CoV 2 or in presence of typical lung lesions on imaging or specific SARS CoV 2 antibodies. Clinical and laboratory characteristics, management of immunosuppression, treatment for Covid 19, and clinical outcomes (hospitalization, admission to intensive care unit, mechanical ventilation, or death) were recorded. Results Of the 104 patients, 67 were admitted to hospital and 37 were managed at home (including all 13 children) Hospitalized patients had a median age of 65.2 years (IQR: 58.1 73.2 years) and two thirds were men. Most common comorbidities included overweight (67.3% hypertension (61.2% diabetes (50.7% cardiovascular disease (20.9% and respiratory disease (16.4% SARS CoV 2 infection was identified after a median of 92.8 months (IQR: 40.1 194.7 months) from LT. During hospitalization, antimetabolites, mTOR inhibitor, and CNIs were withdrawn in 41.9% 30.0% and 12.5% of patients, respectively. The composite endpoint of severe Covid 19 within 30 days after diagnosis was reached by 33.0% of the adult patients. The 30 day mortality rate was 20.0% and 28.1% for hospitalized patients. Multivariate analysis identified that age was independently associated with mortality. Conclusion In our large nationwide study, Covid 19 in LT recipients was associated with a high mortality rate.", "corpus_id": 231726723, "venue": "Clinics and Research in Hepatology and Gastroenterology", "year": 2021, "author_names": [ "Jerome Dumortier", "Christophe Duvoux", "Olivier Roux", "Mario Altieri", "Helene Barraud", "Camille Besch", "Sophie Caillard", "Audrey Coilly", "Filomena Conti", "Sebastien Dharancy", "Francois Durand", "Claire Francoz", "Florentine Garaix", "Pauline Houssel-Debry", "Ilias Kounis", "Guillaume Lassailly", "Noemie Laverdure", "Vincent Leroy", "Maxime Mallet", "Alessandra Mazzola", "Lucy Meunier", "Sylvie Radenne", "J P Richardet", "Claire Vanlemmens", "Marc Hazzan", "Faouzi Saliba" ], "n_citations": 9, "n_key_citations": 0, "score": 0 }, { "doc_id": "234195933", "title": "174: Liver Transplant in an Accidental Acetaminophen Overdose With COVID 19", "abstract": "INTRODUCTION: Fulminant hepatic failure due to acetaminophen toxicity is one of the most common indications for orthotopic liver transplant (OLT) in the acute setting However, it's unknown whether infection with COVID 19 has any effect on successful OLT We report a rare case of OLT in a COVID 19 patient who presented with acetaminophen overdose METHODS: The patient was a 27 year old woman who came to the hospital with one week of abdominal pain along with nausea, vomiting, and diarrhea She reportedly had been taking over 8000 mg Tylenol per day for one week in order to continue working Her acetaminophen level was 42mg/ mL and she was started on N acetylcysteine (NAC) She was tested for COVID 19 per hospital protocol and was positive She denied any recent sick contacts, however, it was eventually determined that the patient cared for her significant other who had COVID 19 about two months prior to her hospitalization The patient's Tylenol levels improved with NAC, but her LFTs significantly increased with AST 14,841 and ALT 11,271 and her coagulation profile worsened with an INR of 4 4 Given her stable respiratory status and elevated LFTs she was deemed to not be a candidate for Remdesivir, per the infectious diseases team recommendations The patient was subsequently transferred to a tertiary medical center for further management With worsening mental status, she was started on continuous veno venous hemodialysis (CVVHD) for hyperammonemia and intubated for airway protection CT brain was concerning for cerebral edema and a bolt was placed for intracranial pressure (ICP) monitoring and management Due to the patient's fulminant liver failure and worsening clinical condition, she was approved for a liver transplant COVID 19 test on the day of transplant and was negative However, it was assumed that she had a positive viral load and was treated as such The patient received COVID 19 convalescent plasma therapy the day after her transplant The patient remained intubated until post op day 5 when her ICPs normalized and she met criteria for extubation The patient's renal function subsequently improved and she was discharged in stable condition RESULTS: This is thought to be the first liver transplant in a patient who tested positive for COVID 19 and describes its management", "corpus_id": 234195933, "venue": "", "year": 2020, "author_names": [ "Cory T Schall", "Roshni Sreedharan" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "227904624", "title": "Protective Role of Tacrolimus, Deleterious Role of Age and Comorbidities in Liver Transplant Recipients With Covid 19: Results From the ELITA/ELTR Multi center European Study", "abstract": "Background and aims Despite concerns that liver transplant (LT) recipients may be at increased risk of unfavorable outcomes from COVID 19 due the high prevalence of co morbidities, immunosuppression and ageing, a detailed analysis of their effects in large studies is lacking Methods Data from adult LT recipients with laboratory confirmed SARS CoV2 infection were collected across Europe. All consecutive patients with symptoms were included in the analysis, Results Between March 1st and June 27th2020, data from 243 adult symptomatic cases from 36 centers and 9 countries were collected. Thirty nine (16% were managed as outpatients while 204 (84% required hospitalization including admission to the ICU (39/204, 19.1% Forty nine (20.2% patients died after a median of 13.5 (10 23) days, respiratory failure was the major cause. After multivariable Cox regression analysis, age 70 (HR 4.16; 95%CI 1.78 9.73) had a negative effect and tacrolimus (TAC) use (HR 0.55; 95%CI 0.31 0.99) had a positive independent effect on survival. The role of co morbidities was strongly influenced by the dominant effect of age where comorbidities increased with the increasing age of the recipients. In a second model excluding age, both diabetes (HR 1.95; 95%CI 1.06 3.58) and chronic kidney disease (HR 1.97; 95%CI 1.05 3.67) emerged as associated with death Conclusions Twenty five per cent of patients requiring hospitalization for Covid 19 died, the risk being higher in patients older than 70 and with medical co morbidities, such as impaired renal function and diabetes. Conversely, the use of TAC was associated with a better survival thus encouraging clinicians to keep TAC at the usual dose.", "corpus_id": 227904624, "venue": "Gastroenterology", "year": 2020, "author_names": [ "Luca Saverio Belli", "Constantino Fondevila", "Paolo Angelo Cortesi", "Sara Conti", "Vincent Karam", "Rene Adam", "Audrey Coilly", "Bo G Ericzon", "Carmelo Loinaz", "Valentin Cuervas-Mons", "Marco Zambelli", "Laura Llado", "Fernando Diaz-Fontenla", "Federica Invernizzi", "Damiano Patrono", "Francois Faitot", "Sherrie Bhooori", "Jacques Pirenne", "Giovanni Perricone", "Giulia Magini", "Lluis Castells", "O Detry", "Pablo Mart Cruchaga", "Jordi Colmenero", "F Berrevoet", "G Rodriguez", "Dirk K Ysebaert", "Sylvie Radenne", "Herold Johnny Metselaar", "Cristina Morelli", "Luciano De Carlis", "Wojciech Grzegorz Polak", "Christophe Duvoux" ], "n_citations": 48, "n_key_citations": 1, "score": 0 }, { "doc_id": "227167775", "title": "Convalescent plasma therapy and remdesivir duo successfully salvaged an early liver transplant recipient with severe COVID 19 pneumonia", "abstract": "The impact and clinical spectrum of COVID 19 infection in liver transplant recipients/solid organ transplants are being unveiled during this recent pandemic. The clinical experience of use of current antiviral drugs and immunomodulators are sparse in solid organ transplantation. We present the clinical course of a 49 year old male recipient who underwent living donor liver transplant for recurrent gastrointestinal bleed and contracted severe COVID 19 pneumonia during the third postoperative week. Herein we report the successful management of severe COVID 19 pneumonia using convalescent plasma therapy and remdesivir. Recipient's clinical deterioration was halted after three consecutive convalescent plasma transfusions with improvement in hypoxia and inflammatory markers (interleukin 6 and C reactive protein) The use of convalescent plasma therapy along with remdesivir may be an ideal combination in the management of severe COVID 19 pneumonia in solid organ transplant recipients.", "corpus_id": 227167775, "venue": "Annals of hepato biliary pancreatic surgery", "year": 2020, "author_names": [ "Imtiakum Jamir", "Pankaj Lohia", "Rajesh Kumar Pande", "Rasika Setia", "Amit Kumar Singhal", "Abhideep Chaudhary" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "228084235", "title": "COVID 19 in a liver transplant recipient: Could iatrogenic immunosuppression have prevented severe pneumonia? A case report", "abstract": "BACKGROUND Coronavirus disease (COVID) is a new and highly contagious infectious disease caused by the coronavirus (COVID 19 or severe acute respiratory syndrome coronavirus 2) There is limited data regarding the incidence and management of COVID 19 in immunocompromised patients' post transplantation. In the pre COVID 19 era, these patients were already at an increased risk of developing opportunistic infections. These often manifested with atypical symptoms. CASE SUMMARY We report another case of uneventful COVID 19 pneumonia in a 58 year old male who was 18 mo' post liver transplantation. He received tacrolimus monotherapy since July 2019. The clinical manifestations included only epigastric pain radiating to the right hypochondrium, nausea and vomiting. He had no fevers, cough, shortness of breath, anosmia or dysgeusia even if the chest computed tomography scan revealed an extension of the multiple patchy ground glass density shadows to the upper lobe of the left lung too. He was hospitalised and received a course of oral chloroquine (200 mg x 3 per day) for a period of 10 d. Interestingly, the COVID 19 infection was uneventful though there were no modifications to his tacrolimus dosing. He was successfully discharged. We performed subsequent follow up via telemedicine. CONCLUSION In light of the current pandemic, it is even more important to identify how the liver recipient's patients present and are managed, especially for immunosuppression treatment.", "corpus_id": 228084235, "venue": "World journal of gastroenterology", "year": 2020, "author_names": [ "Anna Di Sessa", "Alessandra Mazzola", "Chetana Lim", "Mohammed Atif", "Juliana Pappatella", "Valerie Pourcher", "Olivier Scatton", "Filomena Conti" ], "n_citations": 7, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "126282134", "title": "Efficient Modeling of Plasma Wake Field Acceleration Experiments Using Particle In Cell Methods", "abstract": "There is no clear path for building a particle accelerator at the energy frontier beyond the Large Hadron Collider (LHC) One option that is receiving attention is to use plasma wave wakefields driven by intense particle beams. Recent experiments conducted at the Stanford Linear Accelerator Center (SLAC) show that accelerating gradients in such wakefields in excess of 50 GeV/m can be sustained over meter scales. Based on this, a linear collider concept of staging one meter long plasma cells together has been proposed. A facility at SLAC has been built to study the physics in one stage. In this dissertation we describe improvements and enhancements to a highly efficient simulation model for simulating current experiments at SLAC as well as parameters beyond the reach of current experiments. The model is the quasi static particle in cell (PIC) code QuickPIC. A modified set of quasi static field equations were developed, which reduced the number of predictor corrector iteration loops and an improved source deposit scheme was developed to reduce the parallel communication. These improvements led to a factor of 5 to 8 (depending on the simulation parameters) speedup compared with the previous set of field equations and deposition scheme. Several new modules were also added to QuickPIC, including the multiple field ionization and improved beam and plasma particle diagnostics. We also used QuickPIC to study the optimum plasma density for maximizing the acceleration field for fixed electron beam parameters. QuickPIC simulations were also used to study and design two bunch PWFA experiments at SLAC including methods for mitigating the ionization induced beam head erosion. The mitigation methods can enhance the energy gain in two bunch PWFA experiments at SLAC by a factor of 10 for the same beam parameters. For beam parameters beyond SLAC but perhaps necessary for a future collider, QuickPIC was used to study how the ultra high electric fields of a tightly focused second electron bunch could lead to ion motion, which disrupts the focusing fields on the second bunch. The resulting nonlinearity in the transverse focusing force of the plasma wake will lead to emittance growth. We used QuickPIC to carry out the first fully self consistent high resolution simulation on the effects of ion motion for PWFA linear collider problems. Preliminary results showed that the plasma ion motion induced emittance growth was limited to less than a factor of 2. In addition to the electron beam driven PWFA, we also study how a short proton beam can excite a large plasma wake. Such short proton beams are currently not experimentally available. We therefore also study how long proton beams such as those at Fermi National Laboratory and CERN may drive a large plasma wake through a self modulation instability. A linear theory for the self modulation instability is presented under the wide beam limit. QuickPIC simulations show that the self modulation of a long proton beam in a plasma may lead to the micro bunching of the beam and excite a large plasma wake.", "corpus_id": 126282134, "venue": "", "year": 2013, "author_names": [ "Weiming An" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "14869548", "title": "Particle in cell simulation of collisional plasmas using multi processor architectures", "abstract": "The low temperature plasma physics community often employ s particle in cell simulation in conjunction with Monte Carlo collisions, typically to mode l the interaction between the plasma and a background neutral gas, although more general collisi onal nteractions can be handled as well. The use of this attractive procedure is limited by th e computational cost. This paper describes various methods for accelerating particle in c ell simulations using commodity computer hardware. Introduction Particle in cell simulation is widely used for modelling l ow temperature plasma phenomena [1] The attraction of the method is that it entails no assump tions about the form of particle distribution functions, or the nature of their interactions wi th the electromagnetic fields. This is useful, because plasma discharges often feature exotically no n Maxwellian distribution functions, and violently non equilibrium interactions between the ch arged particles and the fields. The purpose of the present paper is to explore the use of modern de sktop computers for particle incell simulation. Such computers typically feature multipl e rocessors, and multiple cores within processors, combined with a hierarchical memory structure This usually means that a relatively capacious main memory is shared by all the processors, while each processor or core has one or more local memories, with less capacity but greater speed. M oreover, most modern processors have some capability for so called single instruction mult iple data (SIMD) operations, a kind of vectorisation. The approach discussed in this paper has t hree elements: (1) A reorganistion of the simulation data structure, with the twin aims of reduc ing memory bandwidth usage and facilitating vectorisation (2) introducing SIMD instruct ions to speed processing of particles and (3) using OpenMP constructions to enable multiple cores to b e used. The combination of these measures can accelerate the simulation by as much as a factor of thirteen, and by a factor of ten over a wide range of conditions, on a common hardware configur ation with two processors and eight cores. 37 EPS Conference on Plasma Physics P4.329 Data structure and vectorization The natural data structure for a particle in cell simulati on is a set of arrays, each storing one of the particle coordinates, with no correlation between th e logical position of a particle in the array and the physical location of the same particle in the si mulated spatial region. The computational cycle of a particle in cell simulation consists o f data transfers from particle positions to spatial mesh points and back again. If the particles are proc essed in sequential order, this leads to a random pattern of access to the mesh point data. Not only w ill this produce much movement of mesh data through the memory hierarchy, but vectorisatio n is impeded by simultaneous accesses to the same mesh location. These issues are addressed by introducing a data structure that associates particles with cells. We can then process all the particles belonging to a given cell in a group, and the mesh data can be stored in registers, economi si g on both memory bandwidth and pointer arithmetic when loading mesh data. This approac h also facilitates vectorisation. Although there are other possibilities [2, 3] the data stru cture we have adopted is an unrolled linked list, a hybrid approach in which an array of data is sto red at each node of a linked list. Of course, particles move between cells, and work is required t o maintain the data structure. This is equivalent to sorting the particles, but this is a tolerable computational burden. Fig. 1 compares an orthodox particle in cell implementation with the pres ent approach, for a simple case with one real space and one velocity space dimension. For a reason ably large number of particles per cell (NC 100) the improvement achieved is about 20 for the new data s tructure only, and about 50 when vectorisation is also used. The orthodox impl e entation cannot be vectorised, for reasons already remarked. Maintaining the sorted data s tructure consumes 30 40 of the computation time, with the implication that better results can be expected for more elaborate models, such as those involving three velocity components a nd magnetic fields. Parallelisation OpenMP [4] offers a lightweight framework for introducing p arallelism into programs designed for shared memory architectures. The approach discu ssed above lends itself readily to parallisation using OpenMP, which can be combined with MPI t o exploit systems that combine shared and distributed memory. Results obtained in this way are shown in Figs. 2 and 3. Fig. 3 shows that there is a regime where a superlinear speedup is ob tained. This occurs because the available cache memory is increased by using more cores. Conclusions The methods employed here combine to produce a speedup that i s in excess of thirteen at best, and above ten over a useful range of problem sizes. More m dern hardware, with better 37 EPS Conference on Plasma Physics P4.329", "corpus_id": 14869548, "venue": "", "year": 2010, "author_names": [ "Miles M Turner", "H J Leggate" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "64315139", "title": "Accelerating Cell Dynamics Simulations of Soft Materials using CUDA GPU", "abstract": "Soft materials are a highly demanded class of research for predicting the characteristics of phase separation and self assembly into nanoscale structures. One of the most well known methods to demonstrate and simulate dynamic behavior of particles, such as particle tracking, and to consider different effects of simulation parameters is cell dynamic simulation. In fact, cell dynamic simulation as a cellular computerization can be used to investigate different aspects of morphological topographies of soft material system. To achieve accurate and efficient computational results for cell dynamic simulation method, two factors are essential and vital: first, computing/calculating time scale; and second, simulation system size. Consequently, finding available computing algorithms and resources such as sequential algorithm for implementing a complex technique and achieving precise results is critical and expensive. Therefore, it is very important to consider a parallel algorithm and programming model to solve time consuming and massive computational processing. This paper presents a novel GPU based parallel acceleration approach to cell dynamics simulations (CDS) for a spherical phase diblock copolymer under a shear flow. A new achievement is based on a commodity NVIDIA Quadro K5000 graphic card and Compute Unified Device Architecture (CUDA) C language.", "corpus_id": 64315139, "venue": "", "year": 2017, "author_names": [ "Hamidreza Soltani", "Dung Q Ly", "Waqar Ahmed" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "15671708", "title": "Accelerating a paricle in cell simulation using a hybrid counting sort", "abstract": "Abstract In this article, performance limitations of the particle advance in a particle in cell (PIC) simulation are discussed. It is shown that the memory subsystem and cache thrashing severely limit the speed of such simulations. Methods to implement a PIC simulation under such conditions are explored. An algorithm based on a counting sort is developed which effectively eliminates PIC simulation cache thrashing. Sustained performance gains of 40 to 70 percent are measured on commodity workstations for a minimal 2d2v electrostatic PIC simulation. More complete simulations are expected to have even better results as larger simulations are usually even more memory subsystem limited.", "corpus_id": 15671708, "venue": "", "year": 2001, "author_names": [ "Kevin J Bowers" ], "n_citations": 66, "n_key_citations": 3, "score": 2 }, { "doc_id": "199381567", "title": "Niobium pentoxide and hydroxyapatite particle loaded electrospun polycaprolactone/gelatin membranes for bone tissue engineering.", "abstract": "Effective methods of accelerating the bone regeneration healing process are in demand for a number of bone related diseases and trauma. This work developed scaffolds with improved properties for bone tissue engineering by electrospinning composite polycaprolactone gelatin hydroxyapatite niobium pentoxide (PGHANb) membranes. Composite membranes, with average fiber diameters ranging from 123 to 156 nm, were produced by adding hydroxyapatite (HA) and varying concentrations of niobium pentoxide (Nb2O5) particles (0, 3, 7, and 10 wt% to a polycaprolactone (PCL) and gelatin (GL) matrix prior to electrospinning. The morphology, mechanical, chemical and biological properties of resultant membranes were evaluated. Bioactivity was assessed using simulated body fluid (SBF) and it confirmed that the presence of particles induced the formation of hydroxyapatite crystals on the surface of the membranes. Samples were hydrophilic and cell metabolism results showed that the niobium containing membranes were non toxic while improving cell proliferation and differentiation compared to controls. This study demonstrated that electrospun membranes containing HA and Nb2O5 particles have potential to promote cell adhesion and proliferation while exhibiting bioactive properties. PGHANb membranes are promising candidates for bone tissue engineering applications.", "corpus_id": 199381567, "venue": "Colloids and surfaces. B, Biointerfaces", "year": 2019, "author_names": [ "Natalia Hadler Marins", "Bryan E J Lee", "Ricardo Marques e Silva", "Arjun Raghavan", "Neftali Lenin Villarreal Carreno", "Kathryn Grandfield" ], "n_citations": 12, "n_key_citations": 0, "score": 0 }, { "doc_id": "225075717", "title": "Fermi type Particle Acceleration from Magnetic Reconnection at the Termination Shock of a Relativistic Striped Wind", "abstract": "An oblique rotating pulsar generates a relativistic striped wind in a pulsar wind nebula (PWN) The termination shock of the PWN compresses the Poynting flux dominated flow and drives magnetic reconnection. By carrying out particle in cell simulations of the termination shock of the PWN, we study the shock structure as well as the energy conversion processes and particle acceleration mechanisms. With the recent advances in the numerical methods, we extend the simulations to the ultrarelativistic regime with a bulk Lorentz factor of up to g 0 106. Magnetic reconnection at the termination shock is highly efficient at converting magnetic energy to particle kinetic energy and accelerating particles to high energies. Similar to earlier studies, we find that the resulting energy spectra crucially depend on l/d e (l is the wavelength of the striped wind and d e is the relativistic plasma skin depth) When l/d e is large (l 40d e the downstream particle spectra form a power law distribution in the magnetically dominated relativistic wind regime. By analyzing particle trajectories and statistical quantities relevant to particle energization, we find that Fermi type mechanism dominates the particle acceleration and power law formation. We find that the results for particle acceleration are scalable as g 0 and s 0 increase to large values. The maximum energy for electrons and positrons can reach hundreds of TeV if the wind has a bulk Lorentz factor of g 0 106 and a magnetization parameter of s 0 10, which can explain the recent observations of high energy gamma rays from PWNe.", "corpus_id": 225075717, "venue": "", "year": 2019, "author_names": [ "Yingchao Lu", "Fan Guo", "Patrick Kilian", "Hui Li", "Chengkun Huang", "Edison P Liang" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "6157223", "title": "Accelerating Pairwise Computations on Cell Processors", "abstract": "Direct computation of all pairwise distances or interactions is a fundamental problem that arises in many application areas including particle or atomistic simulations, fluid dynamics, computational electromagnetics, materials science, genomics and systems biology, and clustering and data mining. In this paper, we present methods for performing such pairwise computations efficiently in parallel on Cell processors. This problem is particularly challenging on the Cell processor due to the small sized Local Stores of the Synergistic Processing Elements, the main computational cores of the processor. We present techniques for different variants of this problem including those with large number of entities or when the dimensionality of the information per entity is large. We demonstrate our methods in the context of multiple applications drawn from fluid dynamics, materials science and systems biology, and present detailed experimental results. Our software library is an open source and can be readily used by application scientists to accelerate pairwise computations using Cell accelerators.", "corpus_id": 6157223, "venue": "IEEE Transactions on Parallel and Distributed Systems", "year": 2011, "author_names": [ "Abhinav Sarje", "Jaroslaw Zola", "Srinivas Aluru" ], "n_citations": 12, "n_key_citations": 0, "score": 1 }, { "doc_id": "19281392", "title": "Photovoltaic Characteristics of a Dye Sensitized Solar Cell (DSSC) Fabricated by a Nano Particle Deposition System (NPDS)", "abstract": "Nano particle deposition system (NPDS) was evaluated for the potential photoelectrode fabrication method for dye sensitized solar cell (DSSC) TiO2 powders as a photoelectrode for DSSC, were fabricated via NPDS and screen printing methods to compare its photovoltaic characteristics. The NPDS is a novel system for depositing ceramic and metallic powders on substrates at room temperature without using solvents by accelerating particles to supersonic velocity. The conventional method for preparing working electrodes uses TiO2 paste where poor adhesion to the substrate and numerous steps to properly disperse the powders are the main problems. To overcome these issues, TiO2 powders were directly sprayed onto ITO glass using the NPDS. The nano sized TiO2 particles were densely deposited, no adhesion problems were noted and the solar cell properties were improved. The photovoltaic performance of a cell having TiO2 layers first deposited by the NPDS method and then deposited by the paste method was compared to a cell fabricated only using the NPDS and only using the paste. A light conversion efficiency of 3.5% was obtained for the former cell, which indicates synergy effect of using these two methods. The screen printing step right after NPDS deposition served to densify the TiO2 film, which decreased the series resistance. Therefore, NPDS was found to be a promising approach for improving DSSC properties and efficiencies. [doi:10.2320/matertrans.M2013220]", "corpus_id": 19281392, "venue": "", "year": 2013, "author_names": [ "Yang-Hee Kim", "Seung-kyu Yang", "Jin-Woong Lee", "Jung Oh Choi", "Sung-Hoon Ahn", "Caroline Sunyong Lee" ], "n_citations": 8, "n_key_citations": 0, "score": 0 }, { "doc_id": "138547445", "title": "3 D Structure of Cellulose Microfibril in Wood Using Electron Tomography and Single Particle Reconstruction Methods", "abstract": "Extended abstract of a paper presented at Microscopy and Microanalysis 2013 in Indianapolis, Indiana, USA, August 4 August 8, 2013.", "corpus_id": 138547445, "venue": "Microscopy and Microanalysis", "year": 2013, "author_names": [ "Mehedi Reza", "Peter Engelhardt", "Janne Ruokolainen" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "204800424", "title": "Single Shot Characterization of High Transformer Ratio Wakefields in Nonlinear Plasma Acceleration.", "abstract": "Plasma wakefields can enable very high accelerating gradients for frontier high energy particle accelerators, in excess of 10 GeV/m. To overcome limits on single stage acceleration, specially shaped drive beams can be used in both linear and nonlinear plasma wakefield accelerators (PWFA) to increase the transformer ratio, implying that the drive beam deceleration is minimized relative to acceleration obtained in the wake. In this Letter, we report the results of a nonlinear PWFA, high transformer ratio experiment using high charge, longitudinally asymmetric drive beams in a plasma cell. An emittance exchange process is used to generate variable drive current profiles, in conjunction with a long (multiple plasma wavelength) witness beam. The witness beam is energy modulated by the wakefield, yielding a response that contains detailed spectral information in a single shot measurement. Using these methods, we generate a variety of beam profiles and characterize the wakefields, directly observing transformer ratios up to R=7.8. Furthermore, a spectrally based reconstruction technique, validated by 3D particle in cell simulations, is introduced to obtain the drive beam current profile from the decelerating wake data.", "corpus_id": 204800424, "venue": "Physical review letters", "year": 2020, "author_names": [ "Ryan Roussel", "Gerard Andonian", "Walter Lynn", "K Sanwalka", "River R Robles", "C Hansel", "Aihua Deng", "Gerard Lawler", "J B Rosenzweig", "Gwanghui Ha", "Jimin Seok", "John Gorham Power", "Manoel Eduardo Conde", "E E Wisniewski", "Darrell Doran", "Charles E Whiteford" ], "n_citations": 9, "n_key_citations": 2, "score": 0 } ]

[ { "doc_id": "231736479", "title": "Study on height Control of Corn harvester in Hilly and mountainous area", "abstract": "The cutting table of corn harvester in hilly and mountainous areas can't be automatically adjusted to the complex terrain, which makes the level of corn harvest in hilly and mountainous areas on the low level. In order to solve this problem, the height control system of cutting table of corn harvester in hilly and mountainous area is studied in this paper. A height control framework of cutting table is proposed based on inclination sensor to test the angle of terrain changing and the adjusting angle of cutting table, which is based on the hydraulic dynamic model of harvester. Furthermore, the estimative method of ground slope is obtained, and three kinds of cutting table height control algorithms with different detection angle ranges of the system are designed. Finally, Simulation analysis and experimental verification are done. The results show that the simulation test time of the cutting table height reach to adjusting balance position is 0.8s and the actual test time is 1s on the upper 10deg, and the simulation test time of the cutting table height reach to the adjusting balance position is 0.5s and the actual test time is 0.6s on the upper 5deg. The maximum error of cutting table height control of corn harvester is less than 20% which adapts to the changing working conditions in hilly and mountainous areas and meets the design requirements. It meets the needs of harvest and improves the degree of automation of corn harvesting in hilly and mountainous areas.", "corpus_id": 231736479, "venue": "2020 Chinese Automation Congress (CAC)", "year": 2020, "author_names": [ "Fengyan Yi", "Jia-wen Liu", "Zhipeng Jiao", "Jiaming Zhou" ], "n_citations": 0, "n_key_citations": 0, "score": 3 }, { "doc_id": "232096396", "title": "SIMULATION ANALYSIS ON THE PERFORMANCE OF SPLITTING AND PICKING DEVICES OF CORN HARVESTER", "abstract": "In the design of corn combine harvester, there is a high demand for customization and diversification in China. Aiming at the problems of backward design method, lack of design knowledge and long product development cycle, the discrete beam method is used to establish the corn plant model. The model of subdevice and the vertical and horizontal roller picking device is established by using UG, and the virtual prototype model is established by using ADAMS software. Meanwhile, the simulation experiments on the kinematics and dynamics performance of the separating device, the corn plant and the picking roller are carried out, and the simulation results are verified by field experiments. Through this method, the design parameters of the separating device and the picking roller are serialized, the method of evaluating the separating performance and the picking performance is provided, and the development and design cycle is shortened, which provides certain reference and theoretical basis for the development and design of the corn harvester header.", "corpus_id": 232096396, "venue": "", "year": 2020, "author_names": [ "Tai Jianjian", "Lin Haitao", "Du Yuefeng", "Mao En-rong", "Guan Yunyi", "Long Xinjiani" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "218850559", "title": "Experimental Study on the Structural Safety of the Corn Harvester Attached to a Tractor", "abstract": "", "corpus_id": 218850559, "venue": "", "year": 2020, "author_names": [ "Chang Seop Shin", "Tae-Yeong Yun", "Hwon Choi", "Taehan Kim" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "225197299", "title": "Machine Vision Based Algorithm for Blockage Recognition of Jittering Sieve in Corn Harvester", "abstract": "Jittering sieve is a significant component of corn harvester, and it is used to separate kernels from impurities. The sieves may be blocked by kernels during the separating process, leading to the reduction of working performance. Unfortunately, the automatic recognition of blockage has not been studied yet. To address this issue, in this study we develop machine vision based algorithms to divide the jittering sieve into sub sieves and to recognize kernel blockages. Additionally, we propose the metric to evaluate blocking level of each sub sieve, aiming to provide the basis for automatic blockage clearing. The performance of the proposed algorithm is verified through simulation experiments on real images. The success ratio of edge determination reaches 100% The mean cross correlation coefficient of the blockage levels and the actual numbers of blocked kernels for all test scenes is 0.932. The results demonstrate the proposed algorithm can be used for accurate blockage recognition, and the proposed metric is appropriate for evaluating the blockage level.", "corpus_id": 225197299, "venue": "", "year": 2020, "author_names": [ "Jun Fu", "Haikuo Yuan", "Rongqiang Zhao", "Jin Wang", "Luquan Ren" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "216408434", "title": "Six Sigma as Strategy of Maintenance in the Corn Harvester Massey Ferguson Model 7252", "abstract": "This article summarizes the results of a research aimed at implementing the Six Sigma methodology as a maintenance strategy in the Massey Ferguson model 7252 combine, and from this implementation, to know the current sigma level of the belt transmission system, a mechanism whose failures, cause low readiness of the system and the machine. The content of the work shows the particularities of the six sigma method. The results obtained after the implementation have allowed knowing the sigma value of the transmission system between two and three s, which does not allow transmitting the power with quality, torque and revolutions that the internal combustion engine of the machine offers. The repair cycle for the transmission subsystem, composed of two technical services, was completed. These results are applicable in similar systems, where high levels of operational safety are required.", "corpus_id": 216408434, "venue": "", "year": 2020, "author_names": [ "Elio Rafael Hidalgo-Batista", "William Romero" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "202131017", "title": "Research Status and Development Trend of Corn Harvester Threshing Device", "abstract": "", "corpus_id": 202131017, "venue": "", "year": 2019, "author_names": [ "Jinglin Guo", "Yuefeng Du", "Yinran Wu", "En-rong Mao" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "216105128", "title": "Design of Row Guidance Control System for Combine Corn Harvester", "abstract": "Row guidance is an important aspect of precision agriculture. Navigation system based on Global Positioning System has been well developed, however Global Positioning System cannot provide enough information on crop row and sometimes suffers from disturbance from the environment. So it is necessary to develop local sensor that can detect crop row during harvesting tasks. This article aims to integrate a self developed mechanical detection sensor into a row guidance control system. The mechanical row detection device based on angular sensor was used to detect crop row and return detected values as deviation for row guidance controller. The control method was introduced after linearizing the kinematic model of farm vehicle, then the road test platform was introduced. The test was conducted under three different speeds. We used Global Positioning System and inertial measuring unit to record the position and heading of the vehicle. For the road test, the average cross track error are below 0.1m, which meet the demand of navigation of combine corn harvester.", "corpus_id": 216105128, "venue": "2019 2nd International Conference on Information Systems and Computer Aided Education (ICISCAE)", "year": 2019, "author_names": [ "Feiyang Gao", "Zhuo Wang", "Xiaoqping Bai", "Wenlong Xi" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "202211586", "title": "Design of On line Detection Device for Grain Breakage of Corn Harvester Based on OpenCV", "abstract": "", "corpus_id": 202211586, "venue": "", "year": 2019, "author_names": [ "Xiaolong Zhu", "Yuefeng Du", "Ruijuan Chi", "Xiaojie Deng" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "116053206", "title": "Design of Picking Roller for Corn Harvester Picking Machine and Selection of Hydraulic Motor", "abstract": "In the actual application process, the corn harvester has problems such as high loss rate of fruit and energy waste. This article analyzes the corn picking device, the reason for the high loss rate is found, and a new picking roller is designed. Through the calculation of the force and torque of the picking roller and the chain during the harvesting process of the corn harvester, the power required for the picking device is obtained, and the hydraulic motor model required for the picking device is further obtained. Through design and analysis, we determined the optimum speed of picking roller in corn picking process: 836r/min, picking roll inclination angle: 35deg, and picking roll radial size: 75mm. The article determines that the hydraulic motor model is the American white cycloidal motor WS80.", "corpus_id": 116053206, "venue": "", "year": 2018, "author_names": [ "Heng Wang", "Shukun Cao", "Xiangqian Xu", "Tao Han", "Hejia Guo" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "53384648", "title": "Development of an Assembly Consistency End of Line Inspection System for Corn Harvester", "abstract": "Nowadays, along with the application of intelligent equipment and new technology, automation degree of manufacturing becomes more and more advanced. While corn harvester, as one of the most important agricultural machineries, the assembly quality was still inspected by traditional method depending on workers' experience in China. Transmission is the core part of corn harvester, which is also the vibration source of whole machine. Detecting and keeping transmission assembly consistency can reduce the vibration degree and increase the mean time to failure, and improve the performance of whole machine. In this paper, a transmission assembly consistency inspection system was designed and a method for judging the assembly consistency was proposed. The proposed approach included two parts, the vibration signals analysis, which was processed based on six bands method to calculate the energy of six bands; and the consistency comparison, which was used to judge the assembly consistency intuitively through the chart. In the last we chose the corn harvester pulverizer as an analysis object. According to result, the third and the fifth are incongruous.", "corpus_id": 53384648, "venue": "", "year": 2018, "author_names": [ "Bingzhong Peng", "Du Chen", "Sun Dong", "Shumao Wang" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "87683553", "title": "Studies on the bio diversity of fresh water molluscan fauna of damoh and Sagar districts", "abstract": "", "corpus_id": 87683553, "venue": "", "year": 2002, "author_names": [ "Mohd Arif Khan" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "82906715", "title": "Fresh water molluscan diversity from a perinnial tank near Hotagi, Solapur (District) Maharastra, India.", "abstract": "It is essential to know the status and trends of freshwater molluscan diversity in order to monitor and assess the impact of human activities on freshwater systems and to conserve the freshwater biodiversity conservation. The present work deals with the assessment of freshwater molluscan diversity to focus mainly on the distribution of various classes. The present survey on the molluscan fauna from Hotagi tank (latitude 17deg 20' 20\" longitude 75deg 68' 00\" shown abundance both the classes of gastropoda and bivalvia. All together 11 species were identified in the freshwater Hotagi tank. Among all these species Lamellidens corrianus and Bellamya bengalensis were found to be abundant. The present study is considered as a first report of its kind as far as molluscan diversity concerned especially form the Hotagi tank from Solapur district Maharashtra.", "corpus_id": 82906715, "venue": "", "year": 2011, "author_names": [ "Tabarej Abdul Ajij Shaikh", "A C Mulani", "K R Rao", "K R Reddy" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "88371579", "title": "Diversity of fresh water bivalve molluscan fauna from aurangabad district with reference to their biotic potential", "abstract": "", "corpus_id": 88371579, "venue": "", "year": 2008, "author_names": [ "Sushilkumar B Shinde" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "188326371", "title": "Diversity of Molluscan communities in Kondakarla Freshwater Lake, Visakhapatnam, Andhra Pradesh", "abstract": "Background: Kondakarla Lake is the second largest natural fresh water lake in Andhra Pradesh, India located at a distance of 42 km from Visakhapatnam. The molluscan faunal diversity was investigated during the study period from July 2012 to June 2014. The study aimed to keep records mainly on the taxonomy, distribution, status, and conservation need of the different species. Methods: Samples were collected with the help of local people by using Peterson's grab sampler, Surber and D Frame. The collected samples were washed and preserved in plastic screw cap bottles and preserved in 70 80% ethyl alcohol and in 5% formalin solution. Results: Altogether 14 species of these 28.57% of class Bivalvia and 71.429% of Gastropoda were recorded at four selected stations. Order Mesogastropoda dominant with 2 families which contributed to 50% of the total population followed by Trigoinoida and Bsommatophora each contributed to 25% The number and Percentage composition of Population Status were recorded during the study period. The recorded range of various diversity indexes were noted at different seasons. Conclusion: Kondakarla freshwater lake consisting of 28.571% of class Bivalvia and 71.429% of gastropoda was recorded at four stations during the study period. The Population Status was 07.143% abundant, 57.143% species were common, 21.429% species were moderate and 14.286% species were rare in the total catch. Key words: Bivalvia, Diversity Index, Gastropoda, Population Status, Mollusca INTRODUCTION The Indian freshwater community is a rich diversity of molluscs, representing 212 species belonging to 21 families, 164 species were recorded from rivers and streams [1] Approximately 5,000 species of freshwater snails were inhabitant lakes, ponds, and streams worldwide [2] Freshwater mussels are soft bodied animals that are usually producing an external skeleton is composed of a limy material or calcium carbonate, which How to cite this article Amaravathi D, Sekhar PSR, Rao KR. Diversity of Molluscan communities in Kondakarla Freshwater Lake, Visakhapatnam, Andhra Pradesh. SSR Inst. Int. J. Life. Sci. 2019; 5(1) 2140 2147. Access this article online www.ijlssr.com serves both protective and supportive purposes. Freshwater molluscs grouped into two main classes i.e. Bivalves, and Gastropods. These are found in a wide range of freshwater habitats and have varied life history strategies, with lifespan that vary from species to species three months i.e. pea clams, 120 years for pearl mussels. They find their highest levels of endemism and diversity in ancient lakes, large river basins, and artesian basins and all of these habitats can be found within the Eastern Mediterranean region [3] The freshwater snails are bioindicators and play a crucial role in the natural ecosystem. They are saprophytic animals and purify water bodies as they consume algae, zooplankton, diatoms, and organic waste. They provide food for many kinds of animals such as fish, birds and also for human beings and they are part of food webs [4,5] Research Article SSR Inst. Int. J. Life. Sci. Amaravathi et al. 2019 DOI:10.21276/SSR IIJLS.2019.5.1.5 Copyright (c) 2015 2019| SSR IIJLS by Society for Scientific Research under a CC BY NC 4.0 International License Volume 05 Issue 01 Page 2141 Being mollusks are significant to humans throughout history food source, tools, jewelry, and even pets [6] The present study aimed to keep records mainly on the taxonomy, distribution, status, and conservation need of the different species found at Kondakarla freshwater lake. MATERIALS AND METHODS Study areaKondakarla Lake is the second largest natural fresh water lake in Andhra Pradesh located at a distance of 42 km from Visakhapatnam and 7 km from Anakapalle. It is located north east of Kondakarla village, lies between latitudes 17deg35'30\" and 17deg36'02\" N, and longitudes 82deg59 27 and 83deg1 0 E. Samplings were done between 6.30 am and 11.30 am on every bimonthly and analyzed in department of Environmental sciences laboratory, Andhra University. Four stations were selected for the present study to the collection of Molluscans during the period June 2 0 1 2 to may 2014. They are (Station IKakarapalli (E) Station IIKondakarla Bird sanctuary (W) Station IIIVadrapalli (N) Station IVAvasomavaram (S) (Fig. 1) Fig. 1: Kondakarla Ava Freshwater lake study area Collection, Preservation, and IdentificationMolluscans were collected from each sampling site with the help of local people by using the boat, nylon scoop net, gloves, Peterson's grab sampler, Surber and D Frame. The Specimens were assembled to use hand picking and scoop method, and collected samples were washed and preserved in plastic screw cap bottles and preserved in 70 80% ethyl alcohol and in 5% formalin solution [7] Diversity was estimated by counting the total number of species per square meter for each sample. The specimens were categorized and identified on the basis of characteristics of the shell such as shape, size, color, and ornamentation of coiled shell [8 12] Other characteristics include whorls as rounded, angular, keel over including shape, length and number of the spire, aperture as sinistral/dextral, opercula (trap door) absence/presence and their shape. Few minute characteristics such as the size and shape of apex, suture deepness, low, the shape, position, size of umbilicus and columellar, Imperforated and perforated, the outer covering (periostracum) pigment, patterning (ribbed and striated) eye and tentacle position were also studied this course of work [13,14] The mathematical expression of ShannonWiener Index (H) Simpson Index, Menhinick Index, Buzas and Gibson's Index, and evenness was calculated by using online calculator [15] RESULTS The present study revealed, the occurrence of fourteen species belongs to two classes, three orders, four families and ten genera. List of molluscan fauna including their Class, order, family, genus, species and IUCN status were recorded in the present investigation was given in Table 1. SSR Inst. Int. J. Life. Sci. Amaravathi et al. 2019 DOI:10.21276/SSR IIJLS.2019.5.1.5 Copyright (c) 2015 2019| SSR IIJLS by Society for Scientific Research under a CC BY NC 4.0 International License Volume 05 Issue 01 Page 2142 Total 28.57% of class Bivalvia and 71.42% of gastropoda was recorded at four stations during the study period. The listed species are Lamellidens corrianus, Lamellidens marginalis, Parreysia favidens, Parreysia corrugate, Bellamya bengalensis, Bellamya dissimilis, Thiara (Melanoides) tuberculata, Tarebia granifera, Tarebia granifera, Bithynia pulchella, Pila globosa, Lymnaea acuminate, Gyraulus convexiusculus and Indoplanorbis", "corpus_id": 188326371, "venue": "", "year": 2019, "author_names": [ "Dr K S Amaravathi", "P S Raja Sekhar", "K RamaRao" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "133656204", "title": "Diversity of molluscan fauna from freshwater bodies of Sangli district: A comprehensive study in relation to environmental variables", "abstract": "Molluscs as a second largest phyla includes snails, slugs, clams, oysters, scallops, cuttlefish, squid and octopus. Present study revealed, diversity of molluscan fauna from three sites i.e Khanderajuri lake, Mhaishal lake and Krishna river in the period of January, 2011 to December, 2013. Among collected molluscs 10 species were identified from seven families i.e. Physidae, Lymnaeidae, Viviparidae, Corbiculidae, Thiaridae, Planorbidae and Littorinidae included in class Gastropods and Bivalve. Seasonal variations showed quantitative difference in gastropods, Quantity was observed to be minimum in mansoon season as compared to premansoon and postmansoon season. Physicochemical alterations were showed influence on the biodiversity at the various sites. INTRODUCTION: Aquatic ecosystem is the most diverse in the world. Benthic macro invertebrates are common inhabitants of fresh water bodies as they transfer energy through food webs 1. Among invertebrate diversity molluscs constitute the second largest phylum next to arthropods. Many molluscan species are also good bio indicators for water quality or pollution on the basis of their tolerance power against extremes of physico chemical components of water 2, 3, 4 Molluscs are found to be important economically, medicinally and ecologically 5 The biological communities that are exposed to pollutants act as integrators of multiple past and present environmental effects in any ecosystem. QUICK RESPONSE CODE DOI: 10.13040/IJPSR.0975 8232.6(8).3563 70 Article can be accessed online on: www.ijpsr.com DOI link: http:/dx.doi.org/10.13040/IJPSR.0975 8232.6(8).3563 70 All attribute makes them suitable to act as bioindicators 6 Molluscs occupy a prominent place among aquatic organisms suitable for biological monitoring 7 Scientists have reported that, certain gastropods and pelecypods were ideal bioindicators for trophic stages (eutrophic, mesotrophic and oligotrophic) of lakes as well as for lotic environments 8, 9, 10 Clarke attempted to show the utility of molluscs in primary classification of the lakes in their various trophic stages. Freshwater macro invertebrates are used for lake monitoring and different indexes were prepared to assess the ecological status of lentic ecosystems. Benthic macro invertebrates constitute an important part of aquatic organisms in aquatic environments. At present aquatic organisms are exposed to anthropogenic disturbance as well as natural changes in their habitats which are to be responded in various ways. Therefore, aquatic organisms also have an important role in biomonitoring 11, 12", "corpus_id": 133656204, "venue": "", "year": 2015, "author_names": [ "A B Sarwade", "Sameer Kumar Pati", "Nitin Anandrao Kamble" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "83657693", "title": "Benthic Substrates: Their Effect on Fresh Water Mollusca", "abstract": "Mollusks have been collected in 650 locations in central New York State since 1966 in order to determine habitat preferences of the various species. Chemical and physical data were recorded at each locality. Three large lakes (Skaneateless, Otsego, and Oneida) were studies in detail to observe patterns of molluscan distribution. The species associated with different bottom types are tabulated. Mollusks are substrate distribution in typical environments are discussed. The lake studies show that definite relationships exist between mollusk distribution and substrate pattern. Species diversity is correlated with substrate diversity (r 0.79) in 348 collection are that include several biotypes. See full text article at JSTOR", "corpus_id": 83657693, "venue": "", "year": 1972, "author_names": [ "Willard N Harman" ], "n_citations": 122, "n_key_citations": 6, "score": 0 }, { "doc_id": "87662281", "title": "Studies on biomass of Seagrass, Seaweed and its associated fauna from Chilika lagoon", "abstract": "Chilika is the largest brackish water lagoon of India which is situated in state of Odisha. It harbours fresh water, brackish water and marine organisms. It is rich in floral and faunal diversity which is the unique feature of this lagoon. The present study is to highlight on seagrass, seaweed and its associated fauna in the southern sector of this lagoon. During the study period it was observed that there were 2 species of seagrasses (Holophila ovalis and Holodule uninervis) and a single species of seaweed (Gracillaria verrucosa) were available abundantly in this sector. The average biomass (Dry weight) of Holophila ovalis, Holodule uninervis and Gracillaria verrucosa were 113, 47.4 and 89 gms/m2 respectively. In addition to the availability of seagrass and seaweed, different species of Molluscan fauna were also collected from different vegetative parts of the seagrass and seaweed beds. The average biomass (Dry weight) of the Molluscan species in three respective seagrass and seaweed bed were 31.4, 45.6 and 255 gms/m2 respectively. Out of seven classes of Molluscan group, two classes were found from the seagrass and seaweed bed. Four species were recorded from gastropoda (Telescopium telescopium, Cerithidea cingulata, Oliva oliva and Conus virgo) and other two species were encountered from Bivalvia (Modiolus striatulus and Donax scortum) which were associated with the seagrasses and seaweed. Among different species of Gastropoda, Cerithidea cingulata was abundant and dominant species which was contributed maximum biomass (79% associated with Holophila ovalis, where as this species was counted very less (9% in the grass bed of Holodule uninervis with in the same area. The dominant species in the grass bed of Holodule uninervis was Modiolus striatulus which was contributing maximum biomass (82% This is the unique feature in its distribution. Though Modiolus striatulus is rarely available in Holophila ovalis but plentily available in the seaweed beds of Gracillaria verrucosa. The reason of its ecological distribution is unknown. As it is a preliminary study on the associated fauna linked with seagrass and seaweed bed in Chilika lagoon, a detail study is required to know its ecological reasons of their distribution.", "corpus_id": 87662281, "venue": "", "year": 2014, "author_names": [ "Mitali Priyadarsini Pati", "Lakshman Nayak", "Satyabrata Das Sharma" ], "n_citations": 6, "n_key_citations": 1, "score": 0 }, { "doc_id": "129124313", "title": "Quaternary continental molluscs from Northern Uruguay: distribution and paleoecology", "abstract": "Abstract Knowledge of the continental Quaternary molluscs of Northern Uruguay is good at a regional scale. Presently, around 23 genera or species level taxa are recorded. Molluscs are often found as fossil concentrates, and rarely as isolated shells. All species are extant, and all except two are present today in the geographic area studied. All properly identified species are from fresh water, except two (belonging to one genus) that are terrestrial. Molluscan diversity is associated to subenvironmental diversity of the localities. Dating made on molluscs from the Sopas Formation yielded ages of ca. 43,000 and ca. 45,000 14C y BP.", "corpus_id": 129124313, "venue": "", "year": 2004, "author_names": [ "Sergio Martinez" ], "n_citations": 25, "n_key_citations": 1, "score": 0 }, { "doc_id": "90371491", "title": "Effect of Soda Ash Industry Effluent on Seaweed Epiphytic and Ambient Fauna in In Situ Condition in Northwest Coast of India", "abstract": "The soda ash industry effluent has significantly reduced the species diversity of epiphytic fauna and planktonic fauna of seawater, their numerical density, fresh and dry weight, total number of groups and group diversity as compared to control. However, the reverse trend was shown by benthos. Therefore, considerable degradation in the water quality of seawater as well as epiphytic and planktonic fauna has been observed due to discharge of effluent. Some of the species of epiphytic fauna were specific to effluent affected as well as control sites. The epiphytic molluscan larvae and fish eggs were observed only from effluent affected and control sites respectively. Quite a number of species showed host specificity under effluent affected as well as control conditions. The maximum numerical density on seaweeds under effluent affected and control conditions was shown by Copepods and Foraminiferans respectively. Most of the species of seawater zooplankton as well as benthos from effluent affected as well as control sites were also present as epiphytic forms on different seaweeds. The epiphytic fauna contained significantly higher number of groups and species diversity compared to zooplanktonic and benthic fauna. The Decapods were observed only in benthos whereas Cladocerans, Coelenterate larvae, Cyclopoids, Ostracods and Molluscan larvae were found only in epiphytic fauna. In general, most of the physicochemical parameters of effluent, diluted effluent as well as effluent affected seawaters were many magnitude to considerably high as compared to control seawater. However, magnesium in effluent as well as sulphate and phosphate in the effluent affected seawater showed reverse trend. In general, the effluent has significantly affected the species diversity and biomass production of epiphytic and planktonic fauna. The reduction in growth of epiphytic fauna and zooplankton in the effluent affected region is inhibited due to high concentration of different salts present in effluent affected seawater. However, such salts promoted growth and species diversity of benthos.", "corpus_id": 90371491, "venue": "", "year": 2007, "author_names": [ "C Raghunathan", "A Tewari", "Yasmin Khambhaty", "J T Jothinayagam" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "131807870", "title": "Invertebrate paleoecology of the Upper Cliff Coal interval (Pennsylvanian) Plateau coal field, northern Alabama", "abstract": "The Upper Cliff coal interval (Early Pennsylvanian) of northern Alabama consists of sandstone, siltstone, shale, and coal deposited within a southwestward prograding deltaic complex as previously defined using paleobotanical and sedimentological evidence. The paleoecology of two invertebrate bearing lithofacies was studied within this context. A lower shaley siltstone lithofacies records the inundation of the Upper Cliff #1 peat accumulating swamp/marsh by fresh water influenced brackish to restricted marine deposits. The fauna is dominated by the inarticulate Orbiculoidea and the trace fossil Planolites As inundation continued, an interdistributary bay developed. Diversity and abundance of taxa increased with the establishment of a molluscan dominated Pteronites Pianolites assemblage. The assemblage consists of a low diversity and low abundance fauna of bivalves and trace fossils that suggest soft substrates with abundant organics. The overlying sandstone lithofacies consists of a basal shell bed Schizophoria zone) composed of rare indigenous Pteronites and Wilkingia and a transported component of open marine epifaunal brachiopods, gastropods, and trilobite fragments. The Schizophoria zone thins to the northeast, suggesting open marine conditions to the southwest. Directly above this bed, the fauna of the sandstone lithofacies is composed entirely of Zoophycos Higher in the section, rare Pteronites and Wilkingia occur, thus this lithofacies preserves a Wilkingia Pteronites Zoophycos assemblage of low abundance and diversity reflecting mobile organic poor substrates. The sandstone lithofacies is interpreted as a migrating sand body with a basal shell bed, initially formed probably as a result of storm activity.", "corpus_id": 131807870, "venue": "", "year": 1987, "author_names": [ "Michael A Gibson", "Robert A Gastaldo" ], "n_citations": 10, "n_key_citations": 1, "score": 0 } ]

[ { "doc_id": "204859520", "title": "Sub Title The re examination of the concept \"meritocracy\" in Japan in relation to I.Q. problem, equality of educational opportunity and equality in education", "abstract": "Ri Ben niokerumeritokurashiGai Nian noJian Tao IQJiao Yu noJi Hui Jun Deng Jiao Yu noPing Deng tonoGuan Lian nioite Sub Title The re examination of the concept \"meritocracy\" in Japan in relation to I.Q. problem, equality of educational opportunity and equality in education Author Tian Bu Jing Run (Tabei, Jun) Publisher Qing Ying Yi Shu Da Xue Da Xue Yuan She Hui Xue Yan Jiu Ke Publication year 1990 Jtitle Qing Ying Yi Shu Da Xue Da Xue Yuan She Hui Xue Yan Jiu Ke Ji Yao She Hui Xue Xin Li Xue Jiao Yu Xue (Studies in sociology, psychology and education) No.30 (1990. ,p.8188 Abstract Notes Lun Wen Genre Departmental Bulletin Paper URL http:/koara.lib.keio.ac.jp/xoonips/modules/xoonips/detail.php?koara_id=AN0006957X 00000030 0081", "corpus_id": 204859520, "venue": "", "year": 2019, "author_names": [], "n_citations": 0, "n_key_citations": 0, "score": 2 }, { "doc_id": "199463880", "title": "Paulo Freire and the Value of Equality in Education", "abstract": "This article seeks to elucidate the philosophical sense of equality affirmed by Paulo Freire as a condition of a liberating education, for which \"accepting and respecting difference\" is another of its conditions. More specifically, it analyzes his statement that \"nobody is superior to anyone else\" (FREIRE, 2017, p. 119) in its logical, epistemological, educational and political dimensions. This analysis is developed in five sections. In the first section, a detailed and conceptual examination of the afore mentioned phrase is proposed. In the second section, the paper considers the implications of this examination for an educational life inspired by Freirean thought; it specifically studies the sense of equality in the pedagogical relationship, that is, between teachers and learners. In the next section, it introduces the ideas of another advocate of equality in education, the French author Joseph Jacotot, in the early nineteenth century. In the fourth section, it compares Jacotot's ideas with those of Paulo Freire, highlighting commonalities and differences, both in their lives and in their educational thoughts. Finally, it draws some conclusions about the value of equality in education, inspired by the reading of these authors, in particular with regard to the place of knowledge and thinking in an emancipatory education.", "corpus_id": 199463880, "venue": "", "year": 2019, "author_names": [ "Walter Omar Kohan" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "218773656", "title": "AN OVERVIEW AND UNDERSTANDING OF GENDER EQUALITY IN EDUCATION IN JAMMU AND KASHMIR", "abstract": "The focus of this paper is an overview and understanding of the gender equality ineducation in Jammu and Kashmir. Gender equality is the process of being fair to women and men. To ensure fairness, strategies and measures should be available to compensate for women'shistorical and social disadvantaged. The central government, state government, NGO's and localbodies are jointly working for the promotion of women's education. The paper discussed to whatextent the central government, state government; NGO's and local bodies have achieved thegender equality in education and what are the challenges in promoting gender equality in the state?The objectives of this study included first, to understand and explore the women's level ofparticipation in education and to explore the barriers to women's education. The data used aretaken from the census of India, report from the education sector of Jammu and Kashmir andNational Human Development Report of India. The literacy rate and education of the women of Jammu and Kashmir is far lower than their counterparts and also lower than women at nationallevel. Poverty, ignorance of parents and lack of basic infrastructural facilities seem to be majorobstacles in the attainment of gender equity in education. The educational schemes anddevelopmental programmes seem have not helped to improve the condition of girls. There is anessential need to make serious efforts by government, not for profit organizations and other localbodies to augment the pace of development in education of the women of Jammu and Kashmir.", "corpus_id": 218773656, "venue": "", "year": 2019, "author_names": [ "Ulfat Rashid" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "211143205", "title": "Does Trade Openness Advances Gender Equality in Education: A Case of D8 Countries", "abstract": "The present study intends to examine the impact of trade openness on gender equality in education in D8 group which consists of Bangladesh, Egypt Indonesia, Iran, Malaysia, Nigeria, Pakistan, Turkey, and during the time period of 1980 to 2012. Panel data estimation with Random Effect Model tested through the feasible generalized least squares method, which allows the estimation in presence of Heteroscadasticity and Autocorrelation problems. The results for our main model which consists of trade openness and gender equality in education, show that trade openness is highly significant in posing the positive effect on the level of gender equality in education. The findings show that coefficients of trade openness is significant at 1 in each equation with accurate positive sign for ratio of female to male enrolment at primary secondary and tertiary level. These results hold true and consistent with earlier work and theories. Based upon the empirical analysis it can be concluded that trade liberalization policies are beneficial for the women in developing 8 countries. The overall conclusion drawn from study show that economic sector has most influential impact on social sector especially in case of developing countries.", "corpus_id": 211143205, "venue": "", "year": 2019, "author_names": [], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "159172272", "title": "Equality in Education and Employment for Sustainable Development of Diverse Indonesia: Enhancing Equal Opportunity, Volunteerism, and Philanthropy", "abstract": "While Indonesia prides it self on its diverse population, diversity can also create disparity in educational access and success among students, generating gaps of participation among people of different economic, gender, and geographical backgrounds. Studies show that inequality can lead to tension, instability and conflicts, impeding the achievement of SDGs. The purpose of this paper is to provide an overview of inequality in Indonesian education and employment opportunities and to suggest additional ways of constructing equality. For this purpose, this study will provide an analysis that relies on statistics, surveys, and reports on education and employment inequality in three constructs: class (rich vs. poor) which is related to geographical areas (urban vs. rural) as well gender (male vs. female) This paper describes the challenges in these three areas, reviews efforts and policies for equality, and suggests transparency and accountability as well as the promotion of volunteerism and philanthropy for the success of Indonesia's sustainable development. Keywords Education and Employment, SDGs, Equal Opportunity, Volunteerism, Philanthropy", "corpus_id": 159172272, "venue": "", "year": 2019, "author_names": [ "Peter Suwarno" ], "n_citations": 4, "n_key_citations": 1, "score": 0 }, { "doc_id": "204678477", "title": "Opportunity for All: A Framework for Quality and Equality in Education", "abstract": "As in the case of outcome accountability, CI focuses on the application of data to identify where things are not working and particularly where they are not working for traditionally underserved students. For example, the reporting of student outcomes disaggregated by historically significant subgroups has been a main contribution of Title I legislation since 1994. Indeed, in our earlier work on standards based reform, we assumed that an outcomes based approach to accountability would in fact engender continuous improvement. We were wrong. We now see at least four fundamental differences that distinguish a CI approach from an accountability based approach.", "corpus_id": 204678477, "venue": "", "year": 2019, "author_names": [ "Jennifer O'day", "Marshall S Smith" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "201678578", "title": "Improving Gender Equality in Education Services at Senior High School The Challenges to Preventing Sexual Violence Through School Management Standard Ismi", "abstract": "Sexual violence is considered a serious problem due to its keep increasing cases. Schools play very important role in preventing sexual violence by providing educational services based on gender equality through school management standard. This study evaluates the implementation of management standard of gender responsive school and the challenges to preventing sexual violence. Four senior high schools in Sragen Regency Indonesia were selected. The quantitative data were collected from a survey to 198 respondents comprising principals, teachers and students. The qualitative data were obtained from focus group discussions. The quantitative data were analyzed using percentage, whilst the qualitative data were analyzed using interactive model analysis of Miles and Huberman. The findings show that the majority of the respondents (96.5% stated that school management standard had been gender responsive. Nevertheless, the schools did not have sufficient facilities and infrastructures which could prevent sexual violence. The challenges to preventing sexual violence are the schools' willingness to build critical awareness of all students, teachers, employees and parents by formulating their vision, mission and strategy based on gender equality values, developing the principles of conduct and integrating sexual violence issue into the schools' academic and non academic activities.", "corpus_id": 201678578, "venue": "", "year": 2019, "author_names": [ "Dwi Astuti Nurhaeni", "Yusuf Kurniawan" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "197787100", "title": "Equality in Education: Solutions Aimed at Closing the Achievement Gap in Mississippi Public Schools", "abstract": "This thesis attempts to examine solutions aimed at closing the achievement gap in Mississippi public schools. The research questions that are addressed in this thesis include: a) Why is the achievement gap part of policy debates in Mississippi and how have individ ual school districts and policymakers responded to the gap? b) How is the gap measured and what are the trends since 2001 when the No Child Left Behind Act was adopted? c) How are achievement gap debates reflected in the current policy? d) Have any of the past national education policies been effective in decreasing the achievement gap? The methods used include a quantitative analysis of NAEP data in order to construct a series of time series graphs as well as a series of interviews with policymakers and school district offi cials in Mississippi in order to write a policy proposal for the state. The research found that while national education policies have had a positive impact on racial achievement gaps, no policy has worked to close the socioeconomic achievement gap.", "corpus_id": 197787100, "venue": "", "year": 2019, "author_names": [ "Mallie E Imbler" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "202492362", "title": "The Concept of Equality in Education", "abstract": "", "corpus_id": 202492362, "venue": "The Place of Commonsense in Educational Thought", "year": 2019, "author_names": [ "Lionel Elvin" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "213330350", "title": "Does Gender Equality in Education Matter for Air Pollution in Sub Saharan Africa?", "abstract": "", "corpus_id": 213330350, "venue": "", "year": 2019, "author_names": [ "Nezahat Dogan" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "216420018", "title": "Closure of Universities Due to Coronavirus Disease 2019 (COVID 19) Impact on Education and Mental Health of Students and Academic Staff", "abstract": "The novel coronavirus disease 2019 (COVID 19) originated in Wuhan city of China, has spread rapidly around the world, sending billions of people into lockdown. The World Health Organization (WHO) declared the coronavirus epidemic a pandemic. In light of rising concern about the current COVID 19 pandemic, a growing number of universities across the world have either postponed or canceled all campus events such as workshops, conferences, sports, and other activities. Universities are taking intensive measures to prevent and protect all students and staff members from the highly infectious disease. Faculty members are already in the process of transitioning to online teaching platforms. In this review, the author will highlight the potential impact of the terrible COVID 19 outbreak on the education and mental health of students and academic staff.", "corpus_id": 216420018, "venue": "Cureus", "year": 2020, "author_names": [ "Pradeep Kumar Sahu" ], "n_citations": 525, "n_key_citations": 19, "score": 1 }, { "doc_id": "72784008", "title": "Mental health of students in a globalized world: Prevalence of complaints and disorders, methods and effectivity of counseling, structure of mental health services for students", "abstract": "Abstract In our globalized world the necessity for student flexibility is increasing. Psychological problems and mental disorders are frequent, and students seek help at the places where they study. This special issue presents data on the prevalence of complaints and disorders reported by students around the world. Examples of counseling services and the methods they employ are given. Proposals for the structure and the methods of mental health services for students are derived from international perspectives.", "corpus_id": 72784008, "venue": "", "year": 2015, "author_names": [ "Rainer Matthias Holm-Hadulla", "Asimina Koutsoukou-Argyraki" ], "n_citations": 49, "n_key_citations": 0, "score": 0 }, { "doc_id": "220833541", "title": "Students under lockdown: Comparisons of students' social networks and mental health before and during the COVID 19 crisis in Switzerland", "abstract": "This study investigates students' social networks and mental health before and at the time of the COVID 19 pandemic in April 2020, using longitudinal data collected since 2018. We analyze change on multiple dimensions of social networks (interaction, friendship, social support, co studying) and mental health indicators (depression, anxiety, stress, loneliness) within two cohorts of Swiss undergraduate students experiencing the crisis (N 212) and make additional comparisons to an earlier cohort which did not experience the crisis (N 54) In within person comparisons we find that interaction and co studying networks had become sparser, and more students were studying alone. Furthermore, students' levels of stress, anxiety, loneliness, and depressive symptoms got worse, compared to measures before the crisis. Stressors shifted from fears of missing out on social life to worries about health, family, friends, and their future. Exploratory analyses suggest that COVID 19 specific worries, isolation in social networks, lack of interaction and emotional support, and physical isolation were associated with negative mental health trajectories. Female students appeared to have worse mental health trajectories when controlling for different levels of social integration and COVID 19 related stressors. As universities and researchers discuss future strategies on how to combine on site teaching with online courses, our results indicate the importance of considering social contacts in students' mental health and offer starting points to identify and support students at higher risk of social isolation and negative psychological effects during the COVID 19 pandemic.", "corpus_id": 220833541, "venue": "PloS one", "year": 2020, "author_names": [ "Timon Elmer", "Kieran Mepham", "Christoph Stadtfeld" ], "n_citations": 216, "n_key_citations": 11, "score": 1 }, { "doc_id": "38873872", "title": "Health behaviors and mental health of students attending alternative high schools: a review of the research literature.", "abstract": "PURPOSE The purpose of this review is to describe current knowledge about health risk behaviors and mental health among alternative high school students. CONCLUSIONS Substance use, diet and/or physical activity, sexual risk behaviors, mental health, and violence were reviewed. Students were described as marginalized youth facing significant social environmental challenges. Findings from 43 studies published from 1997 2010 suggested a high prevalence of health risk behaviors among alternative high school students. Very few studies were conducted by nurse researchers. Suggestions for future research include addressing social environmental factors, resiliency, and emotional/mental health outcomes. PRACTICE IMPLICATIONS Alternative high schools offer a venue to conduct research and implement nursing interventions with high risk, yet resilient, youth.", "corpus_id": 38873872, "venue": "Journal for specialists in pediatric nursing JSPN", "year": 2012, "author_names": [ "Karen E Johnson", "Lindsay A Taliaferro" ], "n_citations": 45, "n_key_citations": 3, "score": 0 }, { "doc_id": "4295064", "title": "Gender differences in the association of smartphone use with the vitality and mental health of adolescent students", "abstract": "ABSTRACT Objective: The present study examined variations in the degree of smartphone use behavior among male and female adolescents as well as the association between various degrees of smartphone use behavior and the vitality and mental health of each gender. Participants: A total of 218 adolescents were recruited from a junior college in September 2014. Methods: All the participants were asked to answer questionnaires on smartphone use. Results: The findings showed that adolescent females as compared with adolescent males exhibited significantly higher degrees of smartphone dependence and smartphone influence. Positive correlations were observed between the duration of smartphone use on weekends and the vitality/mental health of the male adolescents; negative correlations were found between smartphone dependence and the vitality/mental health of males. Conclusion: The findings demonstrate that adolescent females are deeply affected by their smartphone use. Smartphone dependence may decrease the vitality and mental health of male adolescents.", "corpus_id": 4295064, "venue": "Journal of American college health J of ACH", "year": 2018, "author_names": [ "Shang-Yu Yang", "Chung-Ying Lin", "Yueh-Chu Huang", "Jer-Hao Chang" ], "n_citations": 39, "n_key_citations": 0, "score": 0 }, { "doc_id": "21648567", "title": "Predicting the mental health of college students with psychological capital", "abstract": "Abstract Background: Behavioral health treatment is grounded in the medical model with language of deficits and problems, rather than resources and strengths. With developments in the field of positive psychology, re focusing on well being rather than illness is possible. Aims: The primary purpose of this study was to examine relationships and predictions that exist between levels of mental health in college students, i.e. flourishing, moderate mental health, and languishing, and psychological capital (PsyCap) Method: For this cross sectional, exploratory study survey method was used for data collection and for analyses of results a series of descriptive, correlation, ANOVA, and multiple regression analyses were done. Findings: Results indicated that developing positive psychological strengths such as hope, efficacy, resilience, and optimism (acronym HERO) within college students significantly increased their positive mental health. Conclusions: Based on the predictive nature of PsyCap, mental health professionals may engage more in creating programs incorporating PsyCap development intervention for college students. Implications for counseling and programmatic services for college students are presented along with suggestions for future research.", "corpus_id": 21648567, "venue": "Journal of mental health", "year": 2018, "author_names": [ "Priscilla Rose Selvaraj", "Christine Suniti Bhat" ], "n_citations": 22, "n_key_citations": 0, "score": 0 }, { "doc_id": "221162789", "title": "Effects of COVID 19 on College Students' Mental Health in the United States: Interview Survey Study", "abstract": "Background Student mental health in higher education has been an increasing concern. The COVID 19 pandemic situation has brought this vulnerable population into renewed focus. Objective Our study aims to conduct a timely assessment of the effects of the COVID 19 pandemic on the mental health of college students. Methods We conducted interview surveys with 195 students at a large public university in the United States to understand the effects of the pandemic on their mental health and well being. The data were analyzed through quantitative and qualitative methods. Results Of the 195 students, 138 (71% indicated increased stress and anxiety due to the COVID 19 outbreak. Multiple stressors were identified that contributed to the increased levels of stress, anxiety, and depressive thoughts among students. These included fear and worry about their own health and of their loved ones (177/195, 91% reported negative impacts of the pandemic) difficulty in concentrating (173/195, 89% disruptions to sleeping patterns (168/195, 86% decreased social interactions due to physical distancing (167/195, 86% and increased concerns on academic performance (159/195, 82% To cope with stress and anxiety, participants have sought support from others and helped themselves by adopting either negative or positive coping mechanisms. Conclusions Due to the long lasting pandemic situation and onerous measures such as lockdown and stay at home orders, the COVID 19 pandemic brings negative impacts on higher education. The findings of our study highlight the urgent need to develop interventions and preventive strategies to address the mental health of college students.", "corpus_id": 221162789, "venue": "Journal of medical Internet research", "year": 2020, "author_names": [ "Changwon Son", "Sudeep Hegde", "Alec Smith", "Xiaomei Wang", "Farzan Sasangohar" ], "n_citations": 255, "n_key_citations": 11, "score": 1 }, { "doc_id": "219562319", "title": "Mental Health and Behavior of College Students During the Early Phases of the COVID 19 Pandemic: Longitudinal Smartphone and Ecological Momentary Assessment Study", "abstract": "Background The vast majority of people worldwide have been impacted by coronavirus disease (COVID 19) In addition to the millions of individuals who have been infected with the disease, billions of individuals have been asked or required by local and national governments to change their behavioral patterns. Previous research on epidemics or traumatic events suggests that this can lead to profound behavioral and mental health changes; however, researchers are rarely able to track these changes with frequent, near real time sampling or compare their findings to previous years of data for the same individuals. Objective By combining mobile phone sensing and self reported mental health data among college students who have been participating in a longitudinal study for the past 2 years, we sought to answer two overarching questions. First, have the behaviors and mental health of the participants changed in response to the COVID 19 pandemic compared to previous time periods? Second, are these behavior and mental health changes associated with the relative news coverage of COVID 19 in the US media? Methods Behaviors such as the number of locations visited, distance traveled, duration of phone usage, number of phone unlocks, sleep duration, and sedentary time were measured using the StudentLife smartphone sensing app. Depression and anxiety were assessed using weekly self reported ecological momentary assessments of the Patient Health Questionnaire 4. The participants were 217 undergraduate students, with 178 (82.0% students providing data during the Winter 2020 term. Differences in behaviors and self reported mental health collected during the Winter 2020 term compared to previous terms in the same cohort were modeled using mixed linear models. Results During the first academic term impacted by COVID 19 (Winter 2020) individuals were more sedentary and reported increased anxiety and depression symptoms (P<.001) relative to previous academic terms and subsequent academic breaks. Interactions between the Winter 2020 term and the week of the academic term (linear and quadratic) were significant. In a mixed linear model, phone usage, number of locations visited, and week of the term were strongly associated with increased amount of COVID 19 related news. When mental health metrics (eg, depression and anxiety) were added to the previous measures (week of term, number of locations visited, and phone usage) both anxiety (P<.001) and depression (P=.03) were significantly associated with COVID 19 related news. Conclusions Compared with prior academic terms, individuals in the Winter 2020 term were more sedentary, anxious, and depressed. A wide variety of behaviors, including increased phone usage, decreased physical activity, and fewer locations visited, were associated with fluctuations in COVID 19 news reporting. While this large scale shift in mental health and behavior is unsurprising, its characterization is particularly important to help guide the development of methods to reduce the impact of future catastrophic events on the mental health of the population.", "corpus_id": 219562319, "venue": "Journal of medical Internet research", "year": 2020, "author_names": [ "Jeremy F Huckins", "Alex W DaSilva", "Weichen Wang", "Elin L Hedlund", "Courtney Rogers", "Subigya Nepal", "Jialing Wu", "Mikio Obuchi", "Eilis I Murphy", "Meghan L Meyer", "Dylan D Wagner", "Paul E Holtzheimer", "Andrew T Campbell" ], "n_citations": 139, "n_key_citations": 7, "score": 1 }, { "doc_id": "39051838", "title": "Applying an Educational participatory Program based on the PRECEDE Model for Promoting Self esteem and Mental Health of Students in Iran", "abstract": "Background: The students' vulnerability to different problems can have an impact on their mental health. Regarding the lack of evidence on the effectiveness of interventional programs based on health education planning models in this area in developing countries, an educational participatory program based on the PRECEDE model was used, to promote the medical science students' self esteem and mental health status, in Iran. Methods: In this experimental study, 154 students from the universities of medical sciences in the north east of Iran were selected by stratified random sampling method. Then, they were randomly assigned to two groups of case and control. The questionnaires, including the enabling, reinforcing, and predisposing factors, the Rosenberg self esteem scale, and the GHQ 28 were used for data collection. Then, an intervention plan, including focus group discussions and training of selected life skills, based on the PRECEDE model, was conducted for the case group. Results: The predisposing, reinforcing, and enabling factors, and the self esteem and mental health of the students showed a significant difference between the case and control groups. The Pearson correlation coefficient showed that there was a correlation between mental health and knowledge (P =0.008) between self esteem and knowledge (P =0.02) self esteem and attitude (P =0.01) and mental health and attitude (P 0.03) Conclusion: Health promotion planning by using life skills training based on the PRECEDE model can result in participation and empowerment, in order to promote the self esteem and mental health of the students.", "corpus_id": 39051838, "venue": "International journal of preventive medicine", "year": 2012, "author_names": [ "Mahdi Moshki", "Basir Atarodi", "Alireza Moslem", "Mahdokht Taheri" ], "n_citations": 11, "n_key_citations": 0, "score": 0 }, { "doc_id": "218533318", "title": "[Mental health status and its influencing factors among college students during the epidemic of COVID 19]", "abstract": "OBJECTIVE To investigate the mental health status of college students during the epidemic of COVID 19 and identify the factors influencing the mental health of the students. METHODS Using a general questionnaire, a self designed new coronavirus pneumonia knowledge and cognitive behavior questionnaire, the Generalized Anxiety Disorder 7 (GAD 7) and Patient Health Questionnaire 9 (PHQ 9) we conducted an internet based questionnaire survey of 3881 college students in Guangdong Province. A multinomial logistic regression model was used to analyze the collected data. RESULTS The survey showed that 69.47% of the college students had a high level of awareness of COVID 19; the overall incidence of anxiety was 26.60% and the incidences of mild, moderate and severe anxiety were 23.19% 2.71% and 0.70% respectively. Depressive emotions were detected in 21.16% of the students, and the incidences of mild, moderate, and moderate to severe depression were 16.98% 3.17% and 1.01% respectively. The results of multivariate analysis showed that an older age was associated with a higher level of awareness of COVID 19 and greater changes in future health behaviors were associated with less anxiety and depression among the students. The students currently in rural areas, of non medical majors, and reporting half of their information concerning the epidemic being negative were more likely to have anxiety; female gender, residence in suburbs, a drinking history, and excessive negative information concerning the epidemic were all associated with the likeliness of depression. CONCLUSIONS The college students have different levels of anxiety and depression during the epidemic. Depression and anxiety are closely related, but the factors contributing to different levels of such emotions can be different, and colleges and related departments are urged to provide precision mental health education for college students.", "corpus_id": 218533318, "venue": "Nan fang yi ke da xue xue bao Journal of Southern Medical University", "year": 2020, "author_names": [ "Jinghui Chang", "Yuxin Yuan", "Dong Wang" ], "n_citations": 83, "n_key_citations": 9, "score": 1 } ]

[ { "doc_id": "231775501", "title": "Parental Involvement and Academic Achievement of Students in Selected Junior Secondary Schools in Imo State", "abstract": "This study investigated parental involvement and academic achievement of students in selected junior secondary schools in Imo State. The correlational research design was adopted for the study. The population of the study was 1,120 students in Imo State. The Tsaro Yamen formular was used to obtain the sample size of 295 respondents, while the stratified sampling technique was adopted for the study. Content and face validation of the research instrument was carried out by the supervisor and two other experts in the field of measurement and evaluation, while the Pearson's Product Moment Correlation was used to obtain a reliability coefficient of 0.97 from the pilot study. The data collected were analyzed using descriptive statistic of mean and standard deviation and inferential statistic of Pearson's Product Moment Correlation to answer the research questions and to test the formulated hypotheses at 0.05 alpha level respectively. The following findings were made: there is a significant relationship between provision of textual materials and academic achievement of junior secondary school students, there is a significant relationship between provision of guidance counseling and academic achievement of junior secondary school students, finally there is a significant relationship between home teaching and academic achievement of junior secondary school students. The study concluded that provision of textual materials significantly enhance academic achievement of junior secondary school students, guidance counseling impacts positively on academic achievement of junior secondary school students, finally, it was concluded that a great significant relationship exist between home teaching and academic achievement of junior secondary school students. It was therefore, recommended among other things that parents' involvement in schools' activities should be encouraged and the government should consider developing and implementing policies that will support it.", "corpus_id": 231775501, "venue": "", "year": 2020, "author_names": [ "Maxwell D Eremie", "", "Ogechinyere Adaugo" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "55982475", "title": "Parental Involvement and Students' Academic Achievement: A Meta Analysis", "abstract": "The idea that parental involvement has positive influence on students' academic achievement is so intuitively appealing that society in general, and educators in particular, have considered parental involvement an important ingredient for the remedy for many problems in education. The vast proportion of the literature in this area, however, is qualitative and nonempirical. Among the empirical studies that have investigated the issue quantitatively, there appear to be considerable inconsistencies. A meta analysis was conducted to synthesize the quantitative literature about the relationship between parental involvement and students' academic achievement. The findings reveal a small to moderate, and practically meaningful, relationship between parental involvement and academic achievement. Through moderator analysis, it was revealed that parental aspiration/expectation for children's education achievement has the strongest relationship, whereas parental home supervision has the weakest relationship, with students' academic achievement. In addition, the relationship is stronger when academic achievement is represented by a global indicator (e.g. GPA) than by a subject specific indicator (e.g. math grade) Limitations of the study are noted, and suggestions are made for future studies.", "corpus_id": 55982475, "venue": "", "year": 2001, "author_names": [ "Xitao Fan", "Michael J Chen" ], "n_citations": 2248, "n_key_citations": 177, "score": 1 }, { "doc_id": "203090854", "title": "Parental involvement and academic achievement among elementary and middle school students", "abstract": "This study investigates the associations between parental involvement and academic achievement across three criteria: school level (elementary and middle school) gender (male and female) and subject (mathematics and science) Additionally, it examines whether students' attitudes towards a subject and their academic aspirations mediate this relationship. A nationally representative sample of elementary and middle school children in Japan (1884 female fourth grade students from 140 schools, 1849 male fourth grade students from 139 schools, 1812 female eighth grade students from 133 schools and 1789 male eighth grade students from 131 schools) from the Trends in International Mathematics and Science Study 2011 was used for the analysis. The results show that parental involvement is associated with students' educational outcomes. Students' attitudes and aspirations mediate the associations between parental involvement and academic achievement. In particular, different associations between parental monitoring involvement and achievement are found for elementary and middle school.", "corpus_id": 203090854, "venue": "Asia Pacific Education Review", "year": 2019, "author_names": [ "Midori Otani" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "216230717", "title": "Parental Involvement in Mexican Elementary Students' Homework: Its Relation with Academic Self Efficacy, Self Regulated Learning, and Academic Achievement", "abstract": "espanolThis study analyzed the relationship between the types of parental involvement in homework, psychological resources, and academic achievement in Mexican elementary students. In total, 823 children participated, 51% were female, and 49% males. The age of participants ranged from 9 to 12 years old (M 11.12, SD 0.63) Structural equations were calculated. The first model indicated parental autonomy support had a direct positive relation with academic self efficacy and self regulated learning; it also had an indirect positive effect on academic achievement. On the other hand, parental control was directly and indirectly negatively related to academic self efficacy, self regulated learning, and academic achievement. The second model showed that children psychological resources and academic achievement influenced types of parental involvement in homework. A multi group analysis indicated that gender did not moderate the proposed relations in the model. Overall findings suggest a reciprocal relationship between parental involvement in homework and children academic functioning. EnglishEl estudio analizo la relacion entre los tipos de involucramiento parental en las tareas, los recursos psicologicos y el desempeno academico en ninos mexicanos. En total participaron 823 estudiantes, 51% ninas, and 49% ninos. La edad de los participantes variaba desde los 9 a los 12 anos (M 11.12, DE 0.63) Se calcularon dos modelos estructurales. El primero indico que el apoyo parental a la autonomia posee una relacion directa positiva con la autoeficacia academica y el aprendizaje autorregulado, ademas de mostrar que afecta indirectamente de forma positiva el desempeno academico. Por otra parte el control parental afecta directa e indirectamente de forma negativa la autoeficacia academica, el aprendizaje autorregulado y el desempeno academico. En el segundo modelo se encontro que los recursos psicologicos y el desempeno academico del nino influyen en el tipo de involucramiento parental en las tareas. Un analisis multigrupo indico que el genero no modera las relaciones propuestas en el modelo. De forma global los hallazgos sugieren una relacion reciproca entre el involucramiento parental en las tareas y el funcionamiento academico del nino.", "corpus_id": 216230717, "venue": "", "year": 2020, "author_names": [ "Christian Samir Grijalva-Quinonez", "Angel Alberto Valdes-Cuervo", "Lizeth Guadalupe Parra-Perez", "Garcia Vazquez" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "222356228", "title": "Relationship between Parental Involvement, Students' Performance Goal Orientation and Academic Achievement at Elementary Level", "abstract": "The study aims to explore association between parental involvement and its contribution in students' performance goal orientation and academic achievement during their elementary schooling. The study adopted correlational design. Nine (04 boys and 05 girls) Middle/Elementary schools were randomly selected from 233 (140 girls and, 93 boys) Middle/ Elementary schools of Lahore. 324 participants (180 girls and 144 boys) from grade 6 were conveniently selected from these randomly selected 09 public Middle/elementary schools. 324 parents (mother/father) of above mentioned students were also included in this Study. Two instruments, Student Performance Goal Orientation (SPGO) and Parental Involvement Scale (PIS) were used as research instruments. It was quantitative study based on descriptive research. Survey method was used for data collection. The study found positive association between parental involvement and students' learning outcomes achievement. Positive association between students' performance goal orientation and students' learning achievement was also found. It was observed that parents can increase the students' motivation level and help them for their achievements. More than half of the students were of the views that parental involvement enhances the student's learning achievement.", "corpus_id": 222356228, "venue": "", "year": 2020, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "232044846", "title": "A Meta Analysis of the Effect of Parental Involvement on Students' Academic Achievement", "abstract": "This study aims to examine the effect of parental involvement on students' academic achievement at pre school, elementary and secondary levels by using the meta analysis method with respect to home based and school based parental involvement strategies. Data consisted of 55 independent research studies in English published between 2010 and 2019, and accessed through ERIC, Academic Search Complete, Science Direct, Wiley Online Library, and PsycNet databases. Findings revealed that the effect of parental involvement on academic achievement was positive but small. Parental expectations had the biggest effect on academic achievement and parental control had a negative and small effect. The mean effect of parental involvement on students' academic achievement does not differ significantly according to moderator variables of education level, measurement type or measurement area but differs by developmental level of the country. The results are discussed using available related meta analysis studies in the literature.", "corpus_id": 232044846, "venue": "", "year": 2020, "author_names": [ "Cahit Erdem", "Metin Kaya" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "225942476", "title": "The Relationship among Parental Involvement, Educational Expectation and Secondary School Students' Academic Achievement", "abstract": "The success of one's future career is closely related to his/her academic performance at secondary school. Parental involvement and educational expectation (both parents' and children's expectation) are significant indicators to predict students' academic achievement. The paper undertakes a systematic literature review to gain insight into the relationship among parental involvement, educational expectation, and students' academic achievement. It is found that there appears to be a multi mediating model between parental educational expectations and students' academic achievement, which parental involvement and children's educational expectation play mediating roles. In addition, some contextual variables, such as socioeconomic status and ethnic group, should be also considered when the relationship above are explored.", "corpus_id": 225942476, "venue": "", "year": 2020, "author_names": [ "Yang Xiuying", "Renee Chew Shiun Yee", "Hansheng Chen" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "231940124", "title": "Parental support and involvement as a correlate of students' academic achievement in secondary school chemistry in Rivers state", "abstract": "Parental support and involvement for a child at schooling age is very important and aid cognitive and social advancement of the child. This study investigates parental support and involvement as correlates of students' academic achievement in senior secondary school Chemistry. The study adopted survey research type and samples were randomly selected from ten senior secondary schools in Obio/Akpor Local Government Area of Rivers State. A total of one hundred and fifty students comprises of males and females were involved in the study. Two research instrument namely; Parental Support and Involvement Questionnaire (PSIQ) and Chemistry Achievement Test (CAT) with r 0.87 and 0.82 respectively. Four research hypotheses were tested and data were analysed using t test and multiple regression analysis at 0.05 level of significance. The result shows that students from homes with parental support displayed more positive achievement towards their academic than children from home lacking parental support.", "corpus_id": 231940124, "venue": "", "year": 2020, "author_names": [ "Tamunosisi Furo Pepple" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "229540523", "title": "Effects of Self regulated Learning, Parental Involvement and Homework on Academic Achievement of School Students", "abstract": "", "corpus_id": 229540523, "venue": "", "year": 2020, "author_names": [ "Azizi Yahaya", "Ismail Maakip", "Peter Voo", "Malai Yunus Malai Yusuf", "Nor Khairunnisa Binti Awang Ramli" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "197703235", "title": "Relationship between Parental Involvement and Students' Academic Achievement in Model Primary and Secondary School of Haramaya University, East Hararghe Zone, Oromia Regional State, Ethiopia", "abstract": "The purpose of this study was to examine the relationship between parental involvement and students' academic achievement in Model Primary and Secondary School of Haramaya University, Oromia Regional State, Ethiopia. Correlational research design was employed to carry out the current study. Questionnaire interview and document analysis were employed to was employed to collect the data from selected respondents. The sample consists of 52 parents and 60 students purposively selected. The students were selected by their academic rank which means 50% were high achievers whereas below50% were lower achievers from the 8th, 10th and 12th grades. Parents of 30 top scoring and 30 low scoring students were selected purposively. Parental involvement was measured by using self developed questionnaire with 10 items and eight interview guide questions were used, and students' academic achievement was measured by their recorded scores by their respective grades in the past three years four interview guide questions were employed. The first finding was that there was statistically significant positive relationship between parental involvement and students' academic achievement, (r=0.64, p<0.01) The second finding was that the portrayed students who ranked from 1st to 10th from grades 8, 10 and 12 were highly involved, supported and followed by their parents on their education. The third finding was that students who were scored below 50% and ranked last 10's from perspective grades were children whose families were less encouraged and involved. In general, parents' involvement in supporting their students to boost their academic achievement is moderate. It is recommended that more detailed studies can be conducted in the future in different areas as well as country wide.", "corpus_id": 197703235, "venue": "International Journal of Education and Literacy Studies", "year": 2019, "author_names": [ "Abate Assefa", "Birhanu Sintayehu" ], "n_citations": 3, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "85562032", "title": "The Efficacy of Short Wave Diathermy SWD in Decreasing the Cost Effect Time in Treatment of Osteoarthritis OA Knee", "abstract": "DOI: 10.21276/sjams.2018.6.7.13 Abstract: Osteoarthritis (OA) is by far the most common form of arthritis. It is strongly associated with ageing and is a major cause of pain and disability in older people. Joint pain and stiffness are the most common symptom for OA patients. Physical medicines, many drugs, short wave diathermy (SWD) many more therapies are use treat of OA. By using this following study author wants to evaluate and identify the cost efficiency and time management of SWD of treating OA. Grouping of study population were divided into 2 groups such as: Group A (44 patients) ,Group B (40 patients) where in experiment Group A patients treated with 10 minutes SWD and Group B treated with 20 minutes SWD. After treatment mean decrease of pain in group A and group B respectively at week six was 77.07% and 87.81% significant p<0.001 and Mean decrease of stiffness A and group B respectively at week six was 71.43% and 90.30% Overall, the study reported that the treatment is effective and efficient for a meaningful decrease in pain in patients with knee OA. The treatment for OA using SWD did not cost an inordinate amount of the patient's or therapist's time. Therefore, if the clinic already has access to a diathermy machine and caution is taken to avoid contraindications and precautions the benefits outweigh the costs. The recommendation of this study is that using SWD with 20 minutes is very effective and cost friendly treatment for OA.", "corpus_id": 85562032, "venue": "", "year": 2018, "author_names": [ "Dr Abdus Salam", "Dr Moniruzzaman Khan", "Dr Moyeenuzzaman", "Dr Dalia Khanam", "Dr Taslimuddin" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "80794430", "title": "Pengaruh short wave diathermy (SWD) dan transcutaneous electrical nerve stimulation (TENS) terhadap kejadian kinesiophobia dan pain catastrophizing pada pasien low back pain", "abstract": "Individu dengan keluhan low back pain sering menunjukkan keengganan untuk beraktivitas seperti biasa yang berujung dapat mengganggu kualitas hidup individu tersebut. Oleh sebab itu, penelitian ini dilakukan untuk mengetahui apakah ada pengaruh dari terapi short wave diathermy (SWD) dan transcutaneous electrical nerve stimulation (TENS) terhadap kejadian kinesiophobia dan pain catastrophizing pada pasien low back pain di Instalasi Rehabilitasi Medik RSUP Dr. Mohammad Hoesin Palembang. Jenis penelitian yang digunakan adalah kuasi eksperimental dengan desain penelitian pretes postes without control group dengan sampel penelitian adalah semua pasien di Instalasi Rehabilitasi Medik RSUP Dr. Mohammad Hoesin Palembang. Data diambil dari wawancara secara langsung menggunakan kuesioner TSK 17 dan PCS. Uji normalitas data dilakukan dengan metode Saphiro Wilk dan selanjutnya dianalisa dengan Paired T Test. Dari 25 responden, didapatkan 19 pasien wanita dan 6 pasien pria. Kejadian terbanyak yang didapatkan adalah low back pain kronik(72% Hasil Paired T Test didapatkan bahwa ada hubungan antara fisioterapi yang dijalani dan TSK (P=0,012) dan ada hubungan antara fisioterapi dan PCS (P=0.046) Dapat disimpulkan bahwa terdapat pengaruh dari short wave diathermy (SWD) dan transcutaneous electrical nerve stimulation (TENS) yang dijalani oleh pasien low back pain di Instalasi Rehabilitasi Medik RSUP Dr. Mohammad Hoesin Palembang terhadap kejadian kinesiophobia dan pain catastrophizing", "corpus_id": 80794430, "venue": "", "year": 2018, "author_names": [ "Yudistira Wardana", "Jalalin Jalalin", "Eka Febri Zullisetiana" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "217066301", "title": "The Efficacy of Short Wave Diathermy (SWD) on Tissue Healing", "abstract": "The purpose of this project is to review the current literature on the effects of Short wave diathermy on tissue healing to determine if this modality is appropriate to use in evidence based practice. The literature analyzed provides support to the beneficial effects of SWD in the area of tissue healing, specifically wound healing, decreasing synovial sac swelling, and increasing nerve conduction velocity. For the study that examined both continuous SWD along with pulsed SWD, continuous SWD treatments resulted in greater healing properties for patients than those in the pulsed SWD group. However, SWD's efficacy does not necessarily indicate its use as the best treatment. When compared to ultrasound and keoprofen phonophoresis, no significant differences between treatments groups emerged.", "corpus_id": 217066301, "venue": "", "year": 2018, "author_names": [ "Rachel A Stephenson", "Alexis Stewart", "Abigail Stone", "Taylor Tilley" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "199047117", "title": "Pengaruh Short Wave Diathermy (SWD) dan Terapi Latihan terhadap Frozen Shoulder Dextra", "abstract": "Frozen shoulder adalah suatu kondisi yang pasti ditandai dengan hilangnya gerak shoulder aktif maupun pasif secara progresif. Secara epidemiologi frozen shoulder terjadisekitar usia 40 65 tahun. Dari 2 5 populasi sekitar 60 dari kasus frozen shoulder lebih banyak mengenai perempuan dibanding laki laki. Frekuensi frozen shoulder bilateral lebihsering pada pasien dengan diabetes dari pada yang tidak. Rumusan masalah dalam penelitian ini adalah bagaimana pengaruh Short wave diathermy dan terapi latihan pada penderita Frozen shoulder. Populasi penelitian ini adalah penderita frozen shoulder di RSU Pandan Arang Boyolali. sebanyak 8 pasien yang secara keseluruhan diambil sebagai sampel penelitian. Pengumpulan data didapat dari pemeriksaan nyeri menggunakan visual analog scale(VAS) Pemeriksaan nyeri dilakukan dengan 3 cara yaitu nyeri tekan, nyeri diam, dan nyeri gerak selain itu data berupa kualitatif dilihat dari adanya peningkatan atau penurunan aktifitas fungsional. Berdasarkan hasil analisis data dan pembahasan maka dapat disimpulkan Short wave diarthermy dan terapi latihan dapat mengurangi nyeri, pada penderita frozen shoulde.", "corpus_id": 199047117, "venue": "", "year": 2017, "author_names": [ "Didik Purnomo", "Zainal Abidin", "Nurwahida Puspitasari" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "73897221", "title": "A probe into the Short wave diathermy (SWD) practice in an urban private physiotherapy clinics: ethical practice and safety survey", "abstract": "", "corpus_id": 73897221, "venue": "", "year": 2016, "author_names": [ "Swati Meshram", "Medha V Deo", "Dhwani Raj Raj" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "74029511", "title": "Pengaruh Penambahan Core Stability Exercise Setelah Intervensi Short Wave Diathermy (Swd) Terhadap Penurunan Nyeri Pada Penderita Hernia Nucleus Pulposus (HNP)Di RST. Dr. Sedjono Magelang", "abstract": "Latar Belakang: HNP merupakan rupturnya nukleus pulposus. Nukleus pulposus adalah gel viskus yang terdiri dari proteoglikan yang mengandung kadar air yang tinggi. Gejala utama yang muncul adalah nyeri punggung bawah. Short Wave Diathermy (SWD) menghasilkan efek panas sehingga terjadi vasodilatasi. Core stability exercise merupakan kemampuan untuk mengendalikan posisi dan gerakan sentral pada tubuh yang aktifitasnya akan membantu memelihara postur yang baik dalam melakukan gerak serta menjadi dasar untuk semua gerakan pada anggota gerak atas maupun bawah dapat dilakukan dengan efisien. Tujuan Penelitian: untuk mengetahui pengaruh penambahan core stability exersise setelah SWD terhadap penurunan nyeri penderita HNP, untuk mengetahui pengaruh SWD terhadap penurunan nyeri penderita HNP, untuk mengetahui perbedaan pengaruh penambahan core stability exersise setelah SWD terhadap penurunan nyeri penderita HNP. Metode Penelitian: menggunakan metode quasi eksperiment dengan desain penelitian two group pre test and post test design. Responden dalam penelitian ini adalah pasien di Poli Fisioterapi RST Dr. Soedjono Magelang dan dilakukan pada bulan Juli Agustus 2013 dengan total sampel berjumlah 13 orang yang memenuhi kriteria inklusi. Hasil penelitian dianalisa dengan menggunakan Wilcoxon Test dan Mann Whitney Test. Hasil Penelitian: uji pengaruh kelompok perlakuan menggunakan wilcoxon test menunjukkan hasil p 0,05 yang berarti Ho diterima. Kesimpulan: Penambahan Core Stability Exercise setelah intervensi SWD dapat mengurangi nyeri penderita HNP", "corpus_id": 74029511, "venue": "", "year": 2013, "author_names": [ "Ade Talia Oktafia", "SSt FT M Kes Wahyuni", "Sst Ft Dwi Kurniawati" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "70509646", "title": "Penatalaksanaan Short Wave Diathermy (SWD) Transcutaneus Electrical Nerve Stimulation (TENS) Dan William Flexion Exercise Pada Low Back Pain Miogenik Di RSUD Dr. Moewardi", "abstract": "Latar Belakang Low back Pain miogenik merupakan nyeri di sekitar punggung bawah yang disebabkan oleh gangguan atau kelainan pada unsur musculoskeletal tanpa disertai gangguan neurologis antara vertebra thorakal dua belas sampai dengan bawah pinggul atau anus. Low back pain miogenik dapat menimbulkan nyeri, spasme otot punggung bawah dan sekitarnya yang menyebabkan imbalance muscle, sehingga stabilitas otot perut dan punggung bawah menurun, mobilitas lumbal terbatas, mengakibatkan aktivitas fungsional menurun. Keluhan low back pain dapat ditanggulangi oleh fisioterapi. Metode metode dalam penanganan kasus tersebut menggunakan Shortwave Diathermy (SWD) Transcutaneus Electrical Nerve Stimulation (TENS) dan Terapi Latihan, yang dievaluasi dengan metode pengukuran nyeri (VAS) pengukuran kekuatan otot (MMT) pengukuran LGS (midline) dan kemampuan ADL (Skala Oswestry) Tujuan metode diatas untuk mengetahui manfaat pemberian terapi dengan modalitas SWD, TENS dan terapi latihan dalam mengurangi nyeri, peningkatan lingkup gerak sendi, peningkatan kekuatan otot, dan peningkatan kemampuan ADL. Hasil setelah dilakukan 6 kali terapi didapatkan hasil penurunan nyeri, peningkatan LGS, terjadi peningkatan MMT, serta peningkatan kemampuan aktifitas fungsional. Kesimpulan SWD, TENS dan Terapi Latihan dapat menurunkan nyeri dalam kasus tersebut. Terapi latihan dapat meningkatkan LGS, meningkatkan kekuatan otot dan kemampuan fungsional.", "corpus_id": 70509646, "venue": "", "year": 2014, "author_names": [ "Intan Ariska" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "111205374", "title": "Pengaruh Penambahan Mobilisasi Saraf Dan Static Stretching Setelah Intervensi Short Wave Diathermy (Swd) Untuk Mengurangi Nyeri Akibat Ischialgia", "abstract": "Penelitian ini bertujuan untuk mengetahui pengaruh dan perbedaan pengaruh penambahan mobilisasi saraf dan static stretching pada intervensi Short Wave Diathermy (SWD) untuk mengurangi nyeri akibat ischialgia. Penelitian ini dilakukan di RST.Dr.Soedjono Magelang selama 3 minggu. Penelitian ini menggunakan metode eksperimen dengan pendekatan quasi eksperimen dan desain penelitian pre and post test two group design. Jumlah sampel pada penelitian ini adalah 10 sampel yang dibagi menjadi 2 kelompok, kelompok A terdiri dari 5 subyek perlakuan dengan penambahan mobilisasi saraf pada intervensi SWD dan kelompok B terdiri dari 5 subyek perlakuan dengan penambahan static stretching pada intervensi SWD. Hasil uji statistik menggunakan wilcoxon test kelompok A didapatkan hasil 0,043 (p 0,05) berarti ada pengaruh penambahan mobilisasi saraf pada intervensi SWD untuk mengurangi nyeri akibat ischialgia. Sedangkan pada kelompok B didapatkan hasil 0,042 (p 0,05) berarti ada pengaruh penambahan static stretching pada intervensi SWD untuk mengurangi nyeri akibat ischialgia. Berdasarkan uji Mann Whitney didapatkan hasil 0,032 (p 0,05) berarti ada perbedaan pengaruh penambahan mobilisasi saraf dan static stretching pada intervensi SWD untuk mengurangi nyeri akibat ischialgia.", "corpus_id": 111205374, "venue": "", "year": 2012, "author_names": [ "Fendy Nugroho", "SSt Ft M Sc Isnaini Herawati", "Sugiono S Fis MH Kes" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "73135192", "title": "PENAMBAHAN TERAPI LATIHAN MC.KENZIE PADA INTERVENSI SHORT WAVE DIATHERMY (SWD) TRANSCUTANEUS ELECTRICAL NERVE STIMULATION (TENS) DAN MASSAGE DAPAT LEBIH MENURUNKAN NYERI PINGGANG PADA KASUS LOW BACK PAIN", "abstract": "This research aimed to identifi addition intervention in Mc. Kenzie exercise, short wave diathermi, transcutaneous electrical nerve stimulation and massage reduce back pain in low back pain problem Method This research is using pre test and post test control group design. Patients were randomised into two groups the Control Group (CG) that use SWD, TENS, and massage is 10 patients. The Experimental Group (EG) that SWD, TENS, massage and Mc.Kenzie exercise is 10 patients too. Result The result of CG test which using compare means with paired sample t test, p<0,05 (p=0,000) that mean the intervention in CG is having significant to reduce pain. In the result of EG test which using compare means with paired sample t test, p<0,05 (p=0,000) that mean the intervention in EG is having significant to reduce pain. The result test researcher using compare mean test with Independent sample t test, p<0,05 (p=0,003) that means there are significant different between EG result and CG result. In one tail hypothesis got result p<0,05, so it shows that intervention in EG more effective significantly than CG in to reduce low back pain Conclusion Addition intervention in Mc. Kenzie exercise, short wave diathermi, transcutaneous electrical nerve stimulation and massage reduce back pain in low back pain problem.", "corpus_id": 73135192, "venue": "", "year": 2013, "author_names": [ "Endah Kurniasih" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "71104896", "title": "PEMBERIAN CONTRAX RELAX EXERCISE PADA INTERVENSI PEMBERIAN SHORT WAVE DIATHERMY (SWD) TRANSCUTANEUS ELECTRICAL NERVE STIMULATION (TENS) DAN MASSAGE MENURUNKAN NYERI PADA CERVICAL SPONDYLOSIS DI RSUD BADUNG", "abstract": "Cervical spondylosis is the formation of osteophytes on the edge of the cervical spine caused by reduced elasticity discus. Pain due to spasm is one of the perceived clinical manifestations in patients with cervical spondylosis. The research was conducted in Badung District Hospital Physiotherapy Clinic. This research is experimental, randomized design with pre test and post test control group design. Samples obtained by 20 people consisting of 10 persons of control group and 10 treatment groups. The sample was selected by randomized sampling technique. Independent variables in this study is the SWD, TENS, massage and contrax relax exercise therapy.Dependent variable is the change in pain intensity as measured by the VAS scale. Data were analyzed with parametric statistical test with t test. The results obtained t value of 42.69 with an average difference of 64.30, p of 0.00 (p <0.05) results showed that mean H0 rejected SWD, TENS and massage therapy effectively reduce pain in cervical spondylosis In the intervention SWD, TENS, massage and contrax relax exercise obtained t value of 38.03, an average of 70.40, p of 0.00 (p <0.05) indicates that the SWD, TENS, massage and contrax relax exercise therapy effectively reduce pain intensity exercise.From the results showed no significant difference in the effect of therapeutic interventions in which the SWD, TENS, massage and contrax relax exercise more effective to reduce the pain away, because the research results obtained from the average difference in pain intensity decreased by 70.40 while in SWD, TENS and massage intervention gained an average decrease in pain intensity difference of 64,30.", "corpus_id": 71104896, "venue": "", "year": 2013, "author_names": [ "Agus Arta Winangun", "I Made" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "161649108", "title": "Rites, chants et danses de jumeaux chez les Punu du Congo Brazzaville", "abstract": "Comme dans beaucoup de societes africaines, les jumeaux beneficient d'une attention particuliere chez les Punu matrilineaires. Ils sont veneres comme des genies de l'eau et, au moment de leur naissance et leur mort, ainsi qu'en cas de maladie, des rites elabores leur sont consacres. Chants et danses en sont les composantes essentielles et realisent, de par leur modalites rythmiques, la participation au monde des genies. Celle ci s'actualise alors au plus haut degre dans des transes de possession, au cours desquelles les jumeaux communiquent leurs souhaits de maniere parfois violente. Or, ce pole negatif est minimise par le ton joyeux des celebrations et par leur evocation d'un desir d'alliance avec l'univers maternel des genies, qui apportent abondance et prosperite. L'ambivalence est ainsi orientee vers une attitude d'espoir de bien etre pour toute la communaute.", "corpus_id": 161649108, "venue": "", "year": 2009, "author_names": [ "Carine Plancke" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "184889413", "title": "'Une joie qui ouvre l'esprit' L'affectivite comme concept cle dans une approche non dualiste des danses punu (Congo Brazzaville)", "abstract": "Chez les Punu du Congo Brazzaville, la danse ikoku est concue a travers la notion de joie. Une bonne danse equivaut a une danse pleine de joie, qui a pour effet de faire eclater l'esprit Or une ouverture d'esprit analogue est attestee pour les celebrations des genies de l'eau ou elle s'actualise dans des transes. Une distinction rigide entre le profane et le sacre s'y trouve battue en breche. L'opposition corps esprit qui sous tend cette distinction est encore ebranlee par un autre constat l'inspiration qui surgit d'une pareille ouverture est autant corporelle que cognitive, il s'agit d'une inspiration de mouvements, de sons et de paroles, nes d'un seul entrain. Des lors, de quelle maniere peut on rendre compte de cette pratique en restant au plus proche de la realite observee et de sa conceptualisation locale Une mise en avant de la notion d'affectivite, telle qu'elle ressort des philosophies de Merleau Ponty et de Spinoza, apporte des elements de reponse, puisque l'affectivite y est apprehendee comme une puissance inchoative, ce qui permet d'eclairer ainsi les dynamiques d'emergence et d'amplification du ikoku sans les qualifier d'emblee en fonction de leur actualisation sur l'axe dichotomique corps esprit.", "corpus_id": 184889413, "venue": "", "year": 2009, "author_names": [ "Carine Plancke" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "192017753", "title": "Transgression et decharge affective dans les chants funeraires des femmes punu (Congo Brazzaville)", "abstract": "", "corpus_id": 192017753, "venue": "", "year": 2009, "author_names": [ "Carine Plancke" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "145058736", "title": "Articulation des modes de dependance et des modes de reproduction dans deux societes lignageres (Punu et Kunyi du Congo Brazzaville)", "abstract": "Citer ce document Cite this document Rey Pierre Philippe. Articulation des modes de dependance et des modes de reproduction dans deux societes lignageres (Punu et Kunyi du Congo Brazzaville) In: Cahiers d'etudes africaines, vol. 9, ndeg35, 1969. les relations de dependance personnelle en afrique noire pp. 415 440; doi 10.3406/cea.1969.3174 http:/www.persee.fr/doc/cea_0008 0055_1969_num_9_35_3174", "corpus_id": 145058736, "venue": "", "year": 1969, "author_names": [ "Pierre-Philippe Rey" ], "n_citations": 14, "n_key_citations": 1, "score": 1 }, { "doc_id": "60406379", "title": "A classified vocabulary of the Punu language", "abstract": "", "corpus_id": 60406379, "venue": "", "year": 2006, "author_names": [ "Tang Chuan Gong Min" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "128528065", "title": "Punu: Yankunytjatjara Plant Use: Traditional Methods of Preparing Foods, Medicines, Utensils and Weapons from Native Plants", "abstract": "", "corpus_id": 128528065, "venue": "", "year": 2002, "author_names": [ "Pompey Everard", "Cliff Goddard", "Arpad Kalotas", "Julie Miller Jones", "J Hodson", "Margaret A Flynn", "Heather Carey" ], "n_citations": 12, "n_key_citations": 0, "score": 0 }, { "doc_id": "160139958", "title": "De l'inscription de la palabre traditionnelle dans le theatre francophone d'Afrique Centrale (les Punu du Gabon)", "abstract": "La palabre traditionnelle chez les punu du Gabon est un phenomene social, une rencontre, un rassemblement en vue de resoudre les problemes qui introduisent l'expression du desordre dans la societe. Elle repose sur un echange de paroles. Discours codifie, la palabre ne peut se comprendre qu'a l'interieur d'un environnement bien precis. La manifestation de ce phenomene fait apparaitre les elements du theatre, notamment le dialogue, le geste, le silence, la danseA partir de deux textes transcrits et traduits en francais, nous avons entrepris d'etudier la palabre en tant que drame social. Dans cette perspective, l'analyse de la palabre nous a permis de voir comment le verbe, grace a ses multiples facettes, devient acte et fait sens. Nous aboutissons a la conclusion selon laquelle, la tradition orale inspire beaucoup le theatre africain francophone, notamment gabonais. La Mort de Guykafi de Vincent de Paul Nyonda nous a en effet servi d'exemple pour justifier ce propos.", "corpus_id": 160139958, "venue": "", "year": 2004, "author_names": [ "Matsanga Mackossot", "Ginette Flore" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "177322240", "title": "Les punu du gabon, des origines a 1899 essai d'etude historique", "abstract": "La fascination qu'ont les chercheurs pour l'histoire des periodes coloniales et post coloniale du gabon fait que celle precoloniale soit mal connue. La presente monographie, qui se veut une contribution a l'histoire generale du gabon retrace, par etapes, l'histoire des punu depuis leurs lointaines origines (sud zaire) jusqu'a leur rencontre avec le monde occidental dans le sud du gabon actuel. De leur contact sont nes des rapports de commerce qui ont apporte des transformations et des bouleversements au sein de la societe punu.", "corpus_id": 177322240, "venue": "", "year": 1987, "author_names": [ "Monique Koumba Manfoumbi" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "193368275", "title": "Developpement et prematurite de l'enfant gabonais issu de milieu rural Cas des enfants Punu et Fang ages de 3 a 24 mois. Etude comparative", "abstract": "Depi//s /es annees 70, particulierement en occident, la litterature relate regulierement les resultats d'etudes du devenir des enfants prematures dans les differentes composantes de croissance, d'apprentissage, d'efficience intellectuelle globale. Ainsi, ces enfants courent des risques de handicaps moteurs et sensoriels, et une majorite d'entre eux manifeste des troubles du fonctionnement voire de developpement global. Ces difficultes qui se revelent vers l'age de deux ans en moyenne ont ete regroupees dans le (stap) Elles posent la question des relations entre contraintes biologiques et sociales dans le developpement de l'enfant. L'etude du developpement des enfants prematures gabonais en milieu exclusivement rural, en l'occurrence des enfants issus des ethnies punu et fang, permet, par le recours aux comparaisons interculturelles, d'envisager a la fois l'effet des pratiques de soins sur le developpement precoce de l'enfant premature et de contribuer a l'etude de la precocite sensori motrice des bebes africains en cherchant a savoir si cette avance psychomotrice est notable aussi quand le bebe africain nait prematurement. Nous avons compare une population de 48 enfants nes au centre medical de n'dende en milieu punu dont 24 sont nes avant terme, a une population composee de 59 enfants nes au centre medical de bitam en milieu fang dont 28 sont nes prematures en les observant non seulement en situation naturelle regie par leurs coutumes et leurs habitudes socio culturelles, mais aussi en les soumettant a l'echelle brunet lez/ne revisee puis en comparant les pratiques des meres envers l'enfant a l'occasion du bain et du massage. L'analyse et l'interpretation des observations en situation naturelle nous ont permis de comprendre ce que represente culturellement l'enfant premature (bebe gazelle chez les peuples punu bebe pas fini chez les peuples fang) en milieux ruraux traditionnels et de cerner avec rigueur les effets des variables culturelles selon qu'on se situe dans l'une ou l'autre ethnie. La comparaison statistique des indices organisateurs du bain, du massage ainsi que ceux donnes par les quotients de developpement evalues entre 3 et 24 mois indiquent que les differences de fonctionnement entre nos populations d'etude, varient d'une ethnie a une autre, d'une categorie d'enfants a une autre et d'un domaine a", "corpus_id": 193368275, "venue": "", "year": 2000, "author_names": [ "Jean-Bernard Makanga" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "147397254", "title": "Desert Crafts: Anangu Maruku Punu [Book Review]", "abstract": "Review(s) of: Desert Crafts: Anangu Maruku Punu. By Jennifer Isaacs. Doubleday, Sydney, 1992. Pp.149. Colour Plates, Maps, Bibliography, Index. $49.95 h.b.", "corpus_id": 147397254, "venue": "", "year": 1993, "author_names": [ "John Rudder" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "73417892", "title": "The Pros1/Tyro3 axis protects against periodontitis by modulating STAT/SOCS signalling", "abstract": "Periodontitis, an oral inflammatory disease caused by periodontal pathogen infection, is the most prevalent chronic inflammatory disease and a major burden on healthcare. The TAM receptor tyrosine kinases (Tyro3, Axl and Mertk) and their ligands (Gas6 and Pros1) play a pivotal role in the resolution of inflammation and have been associated with chronic inflammatory and autoimmune diseases. In this study, we evaluated the effects of exogenous Pros1 in in vitro and in vivo models of periodontitis. We detected higher Pros1 but lower Tyro3 levels in inflamed gingival specimens of periodontitis patients compared with healthy controls. Moreover, Pros1 was mostly localized in the gingival epithelium of all specimens. In cultured human gingival epithelial cells (hGECs) Porphyromonas gingivalis LPS (p.g LPS) stimulation down regulated Pros1 and Tyro3. Exogenous Pros1 inhibited p.g LPS induced production of TNF a, IL 6, IL 1b, MMP9/2 and RANKL in a Tyro3 dependent manner as revealed by PCR, Western blot analysis, ELISA and gelatin zymography. Pros1 also restored Tyro3 expression down regulated by p.g LPS in hGECs. In rats treated with ligature and p.g LPS, administration of Pros1 attenuated periodontitis associated gingival inflammation and alveolar bone loss. Our mechanistic studies implicated SOCS1/3 and STAT1/3 as mediators of the in vitro and in vivo anti inflammatory effects of Pros1. Collectively, the findings from this work supported Pros1 as a novel anti inflammatory therapy for periodontitis.", "corpus_id": 73417892, "venue": "Journal of cellular and molecular medicine", "year": 2019, "author_names": [ "Lei Jiang", "Xiao Qing Chen", "Ming Jing Gao", "Wai Lee", "Jie Zhou", "Yun-fu Zhao", "Guo Dong Wang" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "195737563", "title": "Live imaging screen reveals that TYRO3 and GAK ensure accurate spindle positioning in human cells", "abstract": "Proper spindle positioning is crucial for spatial cell division control. Spindle positioning in human cells relies on a ternary complex comprising Gai1 3, LGN and NuMA, which anchors dynein at the cell cortex, thus enabling pulling forces to be exerted on astral microtubules. We develop a live imaging siRNA based screen using stereotyped fibronectin micropatterns to uncover components modulating spindle positioning in human cells, testing 1280 genes, including all kinases and phosphatases. We thus discover 16 components whose inactivation dramatically perturbs spindle positioning, including tyrosine receptor kinase 3 (TYRO3) and cyclin G associated kinase (GAK) TYRO3 depletion results in excess NuMA and dynein at the cortex during metaphase, similar to the effect of blocking the TYRO3 downstream target phosphatidylinositol 3 kinase (PI3K) Furthermore, depletion of GAK leads to impaired astral microtubules, similar to the effect of downregulating the GAK interactor Clathrin. Overall, our work uncovers components and mechanisms governing spindle positioning in human cells.Correct spindle positioning is critical for cell division but the full set of proteins regulating this is unclear. Here, with a live imaging siRNA based screen in human cells, the authors identify 16 candidates required for this process, 11 of which were previously unassociated with such a function, including TYRO3 and GAK.", "corpus_id": 195737563, "venue": "Nature Communications", "year": 2019, "author_names": [ "Benita Wolf", "Coralie Busso", "Pierre Gonczy" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "73433918", "title": "TYRO3: A potential therapeutic target in cancer", "abstract": "TYRO3 belongs to the TAM (TYRO3, AXL, and MER) receptor family, a unique subfamily of the receptor tyrosine kinases. Members of TAM family share the same ligand, growth arrest specific 6, and protein S. Although the signal transduction pathways of TYRO3 have not been evaluated in detail, overexpression and activation of TYRO3 receptor tyrosine kinase have been reported to promote cell proliferation, survival, tumorigenesis, migration, invasion, epithelial mesenchymal transition, or chemoresistance in several human cancers. Targeting TYRO3 could break the kinase signaling, stimulate antitumor immunity, reduce tumor cell survival, and regain drug sensitivity. To date, there is no specific TYRO3 targeted drug, the effectiveness of targeting TYRO3 in cancer is worthy of further investigations. In this review, we present an update on molecular biology of TYRO3, summarize the development of potential inhibitors of TAM family members, and provide new insights in TYRO3 targeted treatment. Impact statement Cancer is among the leading causes of death worldwide. In 2016, 8.9 million people are estimated to have died from various forms of cancer. The current treatments, including surgery with chemotherapy and/or radiation therapy, are not effective enough to provide full protection from cancer, which highlights the need for developing novel therapy strategies. In this review, we summarize the molecular biology of a unique member of a subfamily of receptor tyrosine kinase, TYRO3 and discuss the new insights in TYRO3 targeted treatment for cancer therapy.", "corpus_id": 73433918, "venue": "Experimental biology and medicine", "year": 2019, "author_names": [ "Pei-Ling Hsu", "Jonathan Jou", "Shaw-Jenq Tsai" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "208299036", "title": "Oncogenic role of TYRO3 receptor tyrosine kinase in the progression of pancreatic cancer.", "abstract": "The expression and functions of TYRO3, a member of the TAM receptor tyrosine kinase family, in pancreatic cancer (PC) have not been specifically elucidated. In this study, we confirmed TYRO3 expression in five human PC cell lines (PANC 1, MIA PaCa 2, BxPC 3, AsPC 1, and PK 9) using Western blotting. TYRO3 silencing and overexpression studies have revealed that TYRO3 promotes cell proliferation and invasion in PC via phosphorylation of protein kinase B (Akt) and extracellular signal regulated kinase (ERK) Using a mouse xenograft model, we showed that tumor growth was significantly suppressed in mice subcutaneously inoculated with TYRO3 knockdown PC cells compared with mice inoculated with control PC cells. Furthermore, TYRO3 expression was examined in PC tissues obtained from 106 patients who underwent pancreatic resection for invasive ductal carcinoma through immunohistochemical staining. TYRO3 positive patients had poor prognoses for overall survival and disease specific survival compared with TYRO3 negative patients. Multivariate analysis revealed that TYRO3 expression is an independent prognostic factor for overall survival. Our study demonstrates the critical role of TYRO3 in PC progression through Akt and ERK activation and suggests TYRO3 as a novel promising target for therapeutic strategies against PC.", "corpus_id": 208299036, "venue": "Cancer letters", "year": 2019, "author_names": [ "Masaki Morimoto", "Yosuke Horikoshi", "Kazuhiro Nakaso", "Tatsuyuki Kurashiki", "Yoshinori Kitagawa", "Takehiko Hanaki", "Teruhisa Sakamoto", "Soichiro Honjo", "Yoshihisa Umekita", "Yoshiyuki Fujiwara", "Tatsuya Matsura" ], "n_citations": 5, "n_key_citations": 0, "score": 1 }, { "doc_id": "209341766", "title": "Functional Genomics Identifies Hepatitis Induced STAT3 TYRO3 STAT3 Signaling as a Potential Therapeutic Target of Hepatoma", "abstract": "Purpose: Hepatitis promotes the development and recurrence of hepatocellular carcinoma (HCC) Receptor tyrosine kinases (RTK) play critical roles in the development of many cancers. We explored the potential roles of RTKs in hepatitis related liver cancers. Experimental Design: We conducted loss of function screening to elucidate the roles of RTKs in the development of HCC in vitro and in vivo. Results: Many RTKs were coexpressed in HCC and were involved in tumor development and growth. Of these, TYRO3 promoted tumor growth and was clinically associated with hepatitis activity and poor prognosis. In mice, chemical induced hepatitis transcriptionally activated Tyro3 expression via IL 6/IL6R STAT3 signaling. Moreover, hepatitis associated apoptotic cells facilitated the presentation of GAS6, a TYRO3 ligand, to further activate TYRO3 mediated signaling. Furthermore, TYRO3 activation elicited intracellular SRC and STAT3 signaling. In mice, hepatitis and Tyro3 synergistically promoted HCC development. Silencing TYRO3 expression or inhibiting its kinase activity suppressed xenograft HCC growth in nude mice. Conclusions: Many RTKs are simultaneously involved in HCC development. Hepatitis exerts dual effects on the activation of TYRO3 mediated signaling in HCC cells, which further elicits the \"TYRO3 STAT3 TYRO3\" signaling loop to facilitate tumor growth. Our findings unveil a previously unrecognized link between RTKs and hepatitis associated HCC and suggest TYRO3 as a marker and therapeutic target for the HCCs with higher hepatitis activity.", "corpus_id": 209341766, "venue": "Clinical Cancer Research", "year": 2019, "author_names": [ "Chia-Liang Tsai", "Jeng-Shou Chang", "Ming-Chin Yu", "Chern-Horng Lee", "Tse-Ching Chen", "Wen-Yu Chuang", "Wei-Liang Kuo", "Chen-Chun Lin", "Shi-Ming Lin", "Sen-Yung Hsieh" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "196514962", "title": "THU0054 THE SYNOVIAL FLUID FROM RHEUMATOID ARTHRITIS PATIENTSCONTAINS SOLUBLE TAM RECEPTOR TYROSINE KINASES OF WHICH SOLUBLE TYRO3 AND ITS LIGAND GAS6 CORRELATES WITH THE PROINFLAMMATORY CYTOKINE LEVELS", "abstract": "Background We recently showed that the tyrosine protein kinase receptors MER and AXL, both members of the TAM (including TYRO3) receptor family, play a protective role in mouse models of rheumatoid arthritis (RA) [1, 2] In both humans and mice, TAM receptors can be proteolytically cleaved from the cell membrane and shed as a soluble (s) receptors. These sTAM receptors may act as decoy receptors, bind their ligands Growth Arrest Specific 6 (GAS6) and Protein S (PROS1) and thereby inhibit the immunoregulatory and anti inflammatory effect of TAM receptor activation, and prevent TAM receptor mediated phagocytic clearance of dying cells. Objectives To determine the soluble TAM receptor levels in synovial fluids from RA and osteoarthritis (OA) patients and correlate this to the inflammatory process. Methods The level of sMER, sAXL, sTYRO3, GAS6, IL 8, TNFa and IL 1b was measured in synovial fluids of RA (n 28) and OA patients (n 12) by ELISA or multiplex array. Synovial explants were cultured for 24 hrs and the release of sMER and GAS6 was measured by ELISA. Human synovial explants of RA (n 15) and osteoarthritis (OA) (n 17) patients were immunostained for MER. Results Soluble MER and sTYRO3 were significantly enhanced in synovial fluids (P<0.0001 and P=0.0042) of RA patients as compared to OA patients. The sAXL and GAS6 levels in synovial fluid of RA and OA patients was equally high (P 0.267 and P 0.074) In RA patients, but not in OA patients, the synovial fluid levels of sTYRO3 and GAS6 (a ligand for all three TAM receptors) positively correlated with TNFa (r=0.555, r=0.477) IL 1b (r=0.597, r=0.481) and IL 8 (r=0.567, r=0.529) Soluble MER levels, however, did not correlated with local inflammatory markers. Although synovial explants from RA released more sMER into the culture media than explants from OA (P 0.0045) the explants of both RA and OA patients contained comparable amounts of immunopositive MER cells. Conclusion We showed that synovial fluid sTYRO3 and GAS6 levels correlates with higher proinflammatory cytokine levels in RA but not in OA patients. This is in line with the recent observation done by Xu et al. [3] that circulating levels of sTYRO3, but not sMER or sAXL, correlates with disease activity and bone destruction in RA patients. In accordance to serum, the synovial sMER levels were significantly higher in RA than in OA patients with sAXL levels comparable between both patient groups. Interestingly, only for sMER the synovial fluid levels were much higher than in serum suggesting local production as we confirmed in the synovial explants cultures. This illustrates that release of soluble TAM receptors is either the results of different processes (enzymatic shedding or alternative splicing isoforms) or reflects the different cell populations in the arthritic joint. We found that naive macrophages express high MER and inducible AXL, while synovial fibroblast express high AXL and TYRO3. Further studies are warranted to determine if sMER levels impair the clearance of apoptotic cells in the arthritic joint as we have found in our mice studies. Our study shows that synovial sTYRO3 is a marker for joint inflammation and possibly a novel therapeutic target for RA. References [1] Waterborg, C.E. et al. Protective role of the Mer Tyrosine Kinase via efferocytosis in rheumatoid arthritis Models. Frontiers in immunology, 2018. 9. [2] Waterborg, C.E. et al. 03.05 The tam receptors axl and mer play a protective role in a temporal and spatial manner in inflammatory arthritis. 2017, BMJ Publishing Group Ltd. [3] Xu, L. et al. Soluble TAM receptor tyrosine kinases in rheumatoid arthritis: correlation with disease activity and bone destruction. Clinical Experimental Immunology, 2018. 192(1) p. 95 103. Disclosure of Interests None declared", "corpus_id": 196514962, "venue": "Poster Presentations", "year": 2019, "author_names": [ "Julia Vullings", "Claire E J Waterborg", "Marije I Koenders", "P L van Lent", "Peter M Kraan", "Fons van de Loo" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "219268046", "title": "Abstract 2638: Galectin 3 activates the receptor tyrosine kinase Tyro3 and stimulates ERK signaling, cell survival and migration in human head and neck cancer cells", "abstract": "The beta galactoside binding protein galectin 3 (Gal 3) has been shown to influence the tumorigenic behaviour of cancer cells, and elevated serum levels of Gal 3 have been linked to tumor metastasis in several different cancers. Previously, Gal 3 was shown to be a ligand MerTK, a member of the TAM (Tyro3, Axl, MerTK) subfamily of receptor tyrosine kinases (RTKs) these RTKs are implicated in tumorigenesis and/or enabling tumor chemoresistance in many different cancers. However, it is not known whether Gal 3 is also a ligand for the other two TAM RTKs, nor what signaling pathways it activates to regulate cancer cell functions. This study is aimed at determining the ligand properties of Gal 3 against Tyro3 and Axl RTKs in human cancer cells and the oncogenic signal pathways linked to them. The cultured human head and neck squamous cell carcinoma (HNSCC) cell line SCC 25 was determined by western blot and qPCR to express both Axl and Tyro3, but not MerTK. Recombinant Gal 3 and the TAM ligands Gas6 and ProS1 were added to serum starved cells over a time period of minutes and cells lysed to determine activation/phosphorylation of RTKs and intracellular signal mediators by western blotting. Longer incubations were performed to measure cell viability (MTS assay) and cell migration rate (scratch assay) All experiments were carried out a minimum three times. The known TAM ligands Gas6 and ProS1 stimulated TAM RTKs differentially in SCC 25 cells: Gas6 activated Axl strongly within minutes, with ProS1 having a weak effect. In contrast, ProS1 was the strongest ligand for Tyro3, activating it by fourfold, followed by Gal 3 at threefold and Gas6 at twofold. All three exogenous proteins also rapidly stimulated ERK1/2 phosphorylation by two fold, whereas only Gas6 and Gal 3 stimulated Akt phosphorylation. All three proteins significantly maintained cell survival during acute induction of apoptosis by staurosporine. However, only Gas6 conferred a survival effect over long term serum starvation induced cell death. In addition, Gal 3 significantly stimulated cell migration during Axl blockade with the small molecule Axl inhibitor BGB324, further suggesting a role for Tyro3 in this effect. These results have shown that Gal 3 is a ligand for Tyro3 RTK, and that Gal 3 promotes cell survival and migration in HNSCC cells, coupled with activation of both the related signal pathways ERK and Akt. The data therefore reveal a new mechanism of Tyro3 activation; however, it remains to be determined whether Gal 3 interacts with the glycosyl chain on the RTK or else via other interfaces. Finally, cancer therapeutic strategies targeting Gal 3 action and/or cell surface glycosylation may be viable approaches in further research. Citation Format: Sassan Hafizi, Nour Al Kafri. Galectin 3 activates the receptor tyrosine kinase Tyro3 and stimulates ERK signaling, cell survival and migration in human head and neck cancer cells [abstract] In: Proceedings of the American Association for Cancer Research Annual Meeting 2019; 2019 Mar 29 Apr 3; Atlanta, GA. Philadelphia (PA) AACR; Cancer Res 2019;79(13 Suppl):Abstract nr 2638.", "corpus_id": 219268046, "venue": "Molecular and Cellular Biology Genetics", "year": 2019, "author_names": [ "Sassan Hafizi", "N Kafri" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "198301010", "title": "Abstract 2879: TYRO3 is a potential therapeutic target in pediatric acute myeloid leukemia", "abstract": "BACKGROUND: While outcomes for children with acute myeloid leukemia have improved dramatically in recent years, a subset of patients continue to have poor prognosis with METHODS: The TARGET database was utilized to determine expression of mRNAs encoding the TAM family kinases and their ligands, GAS6 and PROS1, in pediatric AML patient samples. Samples (n=145) were categorized into two groups with \"high\" expression greater than the median or \"low\" expression less than or equal to the median and overall survival was compared between the two groups using the log rank test. Expression of TAM family kinases and ligands was determined in AML cell lines by immunoblot. Derivatives of the NB4 AML cell line with shRNA mediated inhibition of TYRO3 were generated and the impact of TYRO3 inhibition on MERTK levels was determined by immunoblot. RESULTS: High levels of TYRO3 or PROS1 mRNAs in patient samples were independently associated with decreased overall survival in children with AML (p CONCLUSIONS: TYRO3 was ubiquitously expressed in all AML cell lines tested and higher levels of TYRO3 and its ligand PROS1 were associated with significantly poorer prognosis in children with AML. These data suggest a role for TYRO3 in pediatric AML and implicate TYRO3 as a therapeutic target in this context. Citation Format: Sherri K. Smart, Manali Rupji, Bhakti Dwivedi, Jeanne Kowalski, Deborah DeRyckere, Douglas K. Graham. TYRO3 is a potential therapeutic target in pediatric acute myeloid leukemia [abstract] In: Proceedings of the American Association for Cancer Research Annual Meeting 2019; 2019 Mar 29 Apr 3; Atlanta, GA. Philadelphia (PA) AACR; Cancer Res 2019;79(13 Suppl):Abstract nr 2879.", "corpus_id": 198301010, "venue": "", "year": 2019, "author_names": [ "Sherri K Smart", "Manali Rupji", "Bhakti Dwivedi", "Jeanne Kowalski", "Deborah DeRyckere", "Douglas Kim Graham" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "54558567", "title": "The Emerging Role of TYRO3 as a Therapeutic Target in Cancer", "abstract": "The TAM family (TYRO3, AXL, MERTK) tyrosine kinases play roles in diverse biological processes including immune regulation, clearance of apoptotic cells, platelet aggregation, and cell proliferation, survival, and migration. While AXL and MERTK have been extensively studied, less is known about TYRO3. Recent studies revealed roles for TYRO3 in cancer and suggest TYRO3 as a therapeutic target in this context. TYRO3 is overexpressed in many types of cancer and functions to promote tumor cell survival and/or proliferation, metastasis, and resistance to chemotherapy. In addition, higher levels of TYRO3 expression have been associated with decreased overall survival in patients with colorectal, hepatocellular, and breast cancers. Here we review the physiological roles for TYRO3 and its expression and functions in cancer cells and the tumor microenvironment, with emphasis on the signaling pathways that are regulated downstream of TYRO3 and emerging roles for TYRO3 in the immune system. Translational agents that target TYRO3 are also described.", "corpus_id": 54558567, "venue": "Cancers", "year": 2018, "author_names": [ "Sherri K Smart", "Eleana Vasileiadi", "Xiaodong Wang", "Deborah DeRyckere", "Douglas Kim Graham" ], "n_citations": 29, "n_key_citations": 0, "score": 0 }, { "doc_id": "196567338", "title": "PF245 METFORMIN INHIBITS THE GROWTH OF MYELOID LEUKEMIA CELLS PARTLY DUE TO SUPPRESSION OF TYRO3 EXPRESSION", "abstract": "", "corpus_id": 196567338, "venue": "HemaSphere", "year": 2019, "author_names": [ "T Saito", "Mai Itoh", "Shuji Tohda" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "157618678", "title": "S.1236 115th Congress (2017 2018) A bill to require the Attorney General to designate Human Trafficking Coordinators for Federal judicial districts, and for other purposes.", "abstract": "", "corpus_id": 157618678, "venue": "", "year": 2017, "author_names": [ "Sherrod Brown" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "157981711", "title": "ASPECTS OF INTERNATIONAL JUDICIAL COOPERATION REGARDING HUMAN TRAFFICKING", "abstract": "Judicial issues in human trafficking suppose with priority a unified approached of the phenomenon both point of view theoretical and practical. So must be cumulatively fulfilled conditions related to the identity or similarity of criminalitations and the correspondent of procedures. National/Romanian intern normative acts are governed by Law no. 302/2004 on international judicial cooperation in criminal matters republished in 20111 and the management of issues at the international level requires agreement documents, covenants, treaties and international conventions at the international universal level mention the United Nations Organisation Convention on transnational organized crime, opened for signature in Palermo Italy on December 12, 2000 and the two additional Protocols (Protocol to prevent, suppress and punish trafficking in persons, women and children and Protocol against migrants trafficking by land, sea and air) and also at the international regional level the Council of Europe Convention on action against trafficking in human beings Warsaw, May 16, 2005.", "corpus_id": 157981711, "venue": "", "year": 2015, "author_names": [ "Aurora-Elena Gavris" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "148017035", "title": "Drepturile, Protectia Si Asistenta Victimelor Traficului De Persoane In Cursul Procesului Penal Perspective Juridice Si Psihosociale (The Rights, Protection and Assistance for Victims of Human Trafficking During Criminal Procedure Judicial and Psychosocial Perspective)", "abstract": "Romanian Abstract: Traficul de persoane este o infractiune care are un impact coplesitor asupra persoanelor, in special in privinta conditiei psihice. Studiile demonstreaza faptul ca victimile exploatarii sexuale, sclaviei si traficului de organe sunt marcate pe viata ca urmare a conditiilor inumane in care sunt tinute.Odata prinse in ciclul traficului de persoane, victimele sunt supuse unor serii de tratamente inumane si injositoare, fortate sa presteze servicii de orice fel sau, mai mult decat atat, unele dintre ele sunt supuse prelevarilor de organe, fapt ce conduce la instituirea in mentalul victimelor a unor temeri constante ce nu pot fi inlaturate prin tratamente medicale.Intimidarea, abuzurile fizice si sexuale, privarea de hrana si asistenta medicala, supunerea la conditii de trai precare si amenintarile traficantilor reprezinta o categorie de abuzuri des intalnite la care sunt supuse victimele traficului de persoane.Pentru a trece peste aceste evenimente traumatice, vicitimile traficului de persoane trebuie sa primeasca ajutor de specialitate si protectie adecvata din partea politiei pentru a se simti in siguranta cand depun marturie impotriva traficantilor. Sub nicio forma, victimele nu trebuie fortate sa ofere informatii impotriva vointei lor. Practica judiciara a dovedit faptul ca majoritatea victimelor nu cunosc procedurile judiciare, iar atunci cand sunt identificate de catre organele de politie, nu coopereaza intotdeauna, din cauza ca au trecut prin experiente traumatice, asadar sunt reticienti in a vorbi despre cele intamplate.Este esential ca politia, organele judiciare si organizatiile neguvernamentale sa colaboreaze pentru a convinge victimele sa colaboreze si sa participe activ in urmarirea penala, pentru a le fi asigurata protectia, si pentru a preveni astfel de evenimente pe viitor.English Abstract: Human trafficking crime has an overwhelming impact on the person, especially regarding mental condition. Researches reveal the fact that a victim of sexual exploitation, slavery or organs theft are marked for life due to the inhumane conditions in which they have been kept.Once trapped in the cycle of trafficking, victims are subjected to a series of inhuman and degrading treatments, forced to provide services of any kind or, more importantly, some of them are subjects to the removal of organs, leading to the establishment in the mentality of the victims of constant fears that cannot be eliminated through medical treatment.Intimidation, physical and sexual abuse, deprivation of food and medical care, subjected to poor living conditions and threats are common types of abuses suffered by victims of trafficking.In order to get over the traumatic events, the victims of human trafficking must get special treatment and adequate protection from police in order to feel safe when testifying against the traffickers. By any means, the victims should not be forced to give information against their will.Judicial practice has proven the fact that most victims are not aware of the judicial procedures, and when they are identified by the police, they do not always cooperate, because they suffered traumatic experiences, therefore they do not feel comfortable talking about what has happened to them. It is essential that the police, judiciary bodies and non governmental organizations collaborate with each other in order to convince the victims to cooperate and actively participate in the criminal procedures, so that they are able to help and protect victims, bring them justice, and also to prevent this kind of events from happening in the future.", "corpus_id": 148017035, "venue": "", "year": 2016, "author_names": [ "Adrian Iacob", "Catalin Golop" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "213991918", "title": "Legal Protection for Child Victims of Criminal Acts of Human Trafficking in Indonesia", "abstract": "Human trafficking has been interpreted as the effect of social disorganization and crime caused by various social factors. Social changes led women and children to leave their homes and villages to scavenge for higher income in another region or country. The research used a normative juridical approach as its method. As the specification of research is descriptive, the analysis method is juridical analytical. Secondary legal materials are presented in the form of primary and secondary. Practical actions are needed to protect and eradicate human trafficking, especially for children. It needs a comprehensive international approach from the countries of origin, transit, and destination. The Government has an obligation to respect, protect, and fulfill the rights of the child, which are contained in some regulations: the Constitution, Act No. 4 Year 1979 about Child Welfare, Act No. 3 Year 1997 Judicial of the Child, Act No. 35 Year 2014 about Child Protection, Act No. 13 Year 2006 on the Protection of Witnesses and Victims, Act No. 21 Year 2007 of PTPPO, The National Plan of Action, Presidential Decree No. 88 Year 2002.", "corpus_id": 213991918, "venue": "", "year": 2019, "author_names": [ "Noer Indriati" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "216354482", "title": "The Elastic Meaning(s) of Human Trafficking", "abstract": "What is human trafficking? When is an expansive definition of trafficking justifiable? How does trafficking relate to other concepts like domestic violence, sexual assault, labor exploitation, and prostitution with which it often overlaps? These questions have become increasingly salient after the U.S. Congress defined the crime of human trafficking in the Victims of Trafficking and Violence Protection Act of 2000 \"TVPA\" Since then, all fifty states have passed legislation with varying definitions of the crime. Congress also has re entered the field with subsequent legislation, expanding the crime to capture new conduct. As a result of legislative advocacy and judicial interpretation, the legal definition of human trafficking in the United States has now broadened to include a remarkably wide variety of actors and conduct. This is particularly evident in the context of sex trafficking. Buyers of sex, online platforms, and hotels increasingly have been caught in the anti trafficking crosshairs and targeted with increased criminal and civil liability. In addition, prosecutors, plaintiffs, and legislators have reframed new conduct as trafficking. In some states, for example, almost all commercial sex is now sex trafficking. In other contexts, previously discrete gender based crimes, such as domestic violence and sexual assault, are categorized as trafficking. This Article examines the historical and continuing expansion of trafficking definitions in the United States with a particular focus on sex trafficking. It posits that the broadening trafficking framework offers solutions to intractable problems that have bedeviled prosecutors and victim rights advocates since 2000. However, the expansion also poses risks of its own to the rights of victims, defendants, and the continued viability of the trafficking framework. This Article argues that the next wave of reform should involve selective broadening and pruning. It cautions against an overly ambitious future expansion, arguing that it risks endangering the strength and legitimacy of the trafficking concept itself.", "corpus_id": 216354482, "venue": "", "year": 2019, "author_names": [ "Julie Dahlstrom" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "158772791", "title": "Human Smuggling and Trafficking from Nigeria, Thailand and Brazil: Manipulating Social and Cultural Capital. An analysis of 38 Belgian judicial files", "abstract": "", "corpus_id": 158772791, "venue": "", "year": 2017, "author_names": [ "Johan Leman", "Stef Janssens" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "234150844", "title": "Exploring the role of Spanish judges in the investigation and prosecution of human trafficking for the purpose of sexual exploitation", "abstract": "This study explores the difficulties that Spanish judges face during the judicial investigation and trial of the trafficking of human beings for sexual exploitation. Here, we highlight the issues o.", "corpus_id": 234150844, "venue": "", "year": 2021, "author_names": [ "Carmen Meneses-Falcon", "Antonio Rua-Vieites", "Jorge Uroz-Olivares" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "145440391", "title": "Some Criminogenic Factors of Trafficking in Human Beings; Cases of Judicial Practice in Albania", "abstract": "This research has been conducted to examine the criminal etiology which is focused in studying and analyzing the risk factors that are highly associated with the criminal conduct. These factors are related to the knowing of the resources and defining the circumstances of criminality such as human being's trafficking. Thus, criminal etiology has been considered until lately as the main part of the science of criminology. It is also considered as an important section of studies and researches onto human's trafficking criminality. This research scope is to show the causes and the circumstances that are being considered of all criminal behaviors and other sociological factors (objective and subjective factors which are involved in recognizing, defining and analyzing the criminality's factors, causes and resources within a country, which in our case it is Albania) Along with trafficking for recruiting persons in a criminal network, for illicit organ transplant, or even for different exploitations, trafficking for sexual exploitation remains the widest category that compounds this crime. The simplest reason is that this kind of \"service\" will always generate the biggest incomes for the traffic dealers. This research has put into evidence the major factors which contribute to the trafficking of human beings mainly in Albania during the period from 2001 to 2005. DOI: 10.5901/ajis.2014.v3n4p361", "corpus_id": 145440391, "venue": "", "year": 2014, "author_names": [ "Ma Naim Tota" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "158140673", "title": "Uncovering labour exploitation: Lights and shadows on the latest European Court of Human Rights' case law on human trafficking", "abstract": "For the first time, the European Court of Human Rights (ECtHR) qualified two labour exploitation cases as human trafficking. In examining these two latest judgments in the light of the Court's earlier trafficking case law, this study highlights that, despite some positive contributions, a regressive trend prevails. The Court fails to establish a clear distinction between the concepts of human trafficking and forced labour the very existence of the latter being threatened by its conflation with trafficking and substantially lowers standards with respect to states' positive obligations, mainly in relation to the establishment of an adequate normative framework and to judicial cooperation in cross border trafficking cases. Worryingly, while confusion persists around the understanding of the international definition of trafficking and its relevance under Article 4 ECHR, the holistic approach to positive obligations initially taken by the Court in Rantsev is progressively being eroded, in full contradiction with its positive obligations doctrine and European anti trafficking law.", "corpus_id": 158140673, "venue": "", "year": 2017, "author_names": [ "Valentina Milano" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "219385129", "title": "The Modern Trend of Human Trafficking in Africa and the Role of the African Union (AU)", "abstract": "This paper examines the role of the African Union, (AU) in combatting human trafficking. The paper will utilize a mixed methodology to examine the response of AU on the effects of human trafficking in Africa, using both qualitative analysis and a case study of some African countries and their anti trafficking mechanisms. This method has been selected to incorporate both a broad reaching evaluation of mechanisms within the AU region directed at combating human trafficking and a detail focused perspective of how these mechanisms have affected trafficking patterns throughout AU member states. To comprehensively evaluate the effectiveness of AU in combating human trafficking in Africa, the qualitative analysis used in this paper is based on the various editions of US Department of State's Trafficking in Persons Reports. These reports evaluate both the realities of human trafficking within a nation as well as governmental and judicial response to trafficking issues.", "corpus_id": 219385129, "venue": "", "year": 2017, "author_names": [ "Chris Mensah-Ankrah", "Rex Osei Sarpong" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "549362", "title": "SoK: Research Perspectives and Challenges for Bitcoin and Cryptocurrencies", "abstract": "Bit coin has emerged as the most successful cryptographic currency in history. Within two years of its quiet launch in 2009, Bit coin grew to comprise billions of dollars of economic value despite only cursory analysis of the system's design. Since then a growing literature has identified hidden but important properties of the system, discovered attacks, proposed promising alternatives, and singled out difficult future challenges. Meanwhile a large and vibrant open source community has proposed and deployed numerous modifications and extensions. We provide the first systematic exposition Bit coin and the many related crypto currencies or 'altcoins. Drawing from a scattered body of knowledge, we identify three key components of Bit coin's design that can be decoupled. This enables a more insightful analysis of Bit coin's properties and future stability. We map the design space for numerous proposed modifications, providing comparative analyses for alternative consensus mechanisms, currency allocation mechanisms, computational puzzles, and key management tools. We survey anonymity issues in Bit coin and provide an evaluation framework for analyzing a variety of privacy enhancing proposals. Finally we provide new insights on what we term disinter mediation protocols, which absolve the need for trusted intermediaries in an interesting set of applications. We identify three general disinter mediation strategies and provide a detailed comparison.", "corpus_id": 549362, "venue": "2015 IEEE Symposium on Security and Privacy", "year": 2015, "author_names": [ "Joseph Bonneau", "Andrew K Miller", "Jeremy Clark", "Arvind Narayanan", "Joshua A Kroll", "Edward W Felten" ], "n_citations": 908, "n_key_citations": 68, "score": 1 }, { "doc_id": "9155549", "title": "Bitcoin NG: A Scalable Blockchain Protocol", "abstract": "Cryptocurrencies, based on and led by Bitcoin, have shown promise as infrastructure for pseudonymous online payments, cheap remittance, trustless digital asset exchange, and smart contracts. However, Bitcoin derived blockchain protocols have inherent scalability limits that trade off between throughput and latency and withhold the realization of this potential. This paper presents Bitcoin NG, a new blockchain protocol designed to scale. Based on Bitcoin's blockchain protocol, Bitcoin NG is Byzantine fault tolerant, is robust to extreme churn, and shares the same trust model obviating qualitative changes to the ecosystem. In addition to Bitcoin NG, we introduce several novel metrics of interest in quantifying the security and efficiency of Bitcoin like blockchain protocols. We implement Bitcoin NG and perform large scale experiments at 15% the size of the operational Bitcoin system, using unchanged clients of both protocols. These experiments demonstrate that Bitcoin NG scales optimally, with bandwidth limited only by the capacity of the individual nodes and latency limited only by the propagation time of the network.", "corpus_id": 9155549, "venue": "NSDI", "year": 2016, "author_names": [ "Ittay Eyal", "Adem Efe Gencer", "Emin Gun Sirer", "Robbert van Renesse" ], "n_citations": 925, "n_key_citations": 90, "score": 0 }, { "doc_id": "13007988", "title": "Secure High Rate Transaction Processing in Bitcoin", "abstract": "Bitcoin is a disruptive new crypto currency based on a decentralized open source protocol which has been gradually gaining momentum. Perhaps the most important question that will affect Bitcoin's success, is whether or not it will be able to scale to support the high volume of transactions required from a global currency system. We investigate the implications of having a higher transaction throughput on Bitcoin's security against double spend attacks. We show that at high throughput, substantially weaker attackers are able to reverse payments they have made, even well after they were considered accepted by recipients. We address this security concern through the GHOST rule, a modification to the way Bitcoin nodes construct and re organize the block chain, Bitcoin's core distributed data structure. GHOST has been adopted and a variant of it has been implemented as part of the Ethereum project, a second generation distributed applications platform.", "corpus_id": 13007988, "venue": "Financial Cryptography", "year": 2015, "author_names": [ "Yonatan Sompolinsky", "Aviv Zohar" ], "n_citations": 502, "n_key_citations": 60, "score": 0 }, { "doc_id": "154367028", "title": "Bitcoin: Economics, Technology, and Governance", "abstract": "Bitcoin is an online communication protocol that facilitates the use of a virtual currency, including electronic payments. Bitcoin's rules were designed by engineers with no apparent influence from lawyers or regulators. Bitcoin is built on a transaction log that is distributed across a network of participating computers. It includes mechanisms to reward honest participation, to bootstrap acceptance by early adopters, and to guard against concentrations of power. Bitcoin's design allows for irreversible transactions, a prescribed path of money creation over time, and a public transaction history. Anyone can create a Bitcoin account, without charge and without any centralized vetting procedure or even a requirement to provide a real name. Collectively, these rules yield a system that is understood to be more flexible, more private, and less amenable to regulatory oversight than other forms of payment though as we discuss, all these benefits face important limits. Bitcoin is of interest to economists as a virtual currency with potential to disrupt existing payment systems and perhaps even monetary systems. This article presents the platform's design principles and properties for a nontechnical audience; reviews its past, present, and future uses; and points out risks and regulatory issues as Bitcoin interacts with the conventional financial system and the real economy.", "corpus_id": 154367028, "venue": "", "year": 2014, "author_names": [ "Rainer Bohme", "Nicolas Christin", "Benjamin Edelman", "Tyler W Moore" ], "n_citations": 940, "n_key_citations": 64, "score": 0 }, { "doc_id": "1471218", "title": "Eclipse Attacks on Bitcoin's Peer to Peer Network", "abstract": "We present eclipse attacks on bitcoin's peer to peer network. Our attack allows an adversary controlling a sufficient number of IP addresses to monopolize all connections to and from a victim bitcoin node. The attacker can then exploit the victim for attacks on bitcoin's mining and consensus system, including N confirmation double spending, selfish mining, and adversarial forks in the blockchain. We take a detailed look at bitcoin's peer to peer network, and quantify the resources involved in our attack via probabilistic analysis, Monte Carlo simulations, measurements and experiments with live bitcoin nodes. Finally, we present countermeasures, inspired by botnet architectures, that are designed to raise the bar for eclipse attacks while preserving the openness and decentralization of bitcoin's current network architecture.", "corpus_id": 1471218, "venue": "USENIX Security Symposium", "year": 2015, "author_names": [ "Ethan Heilman", "Alison Kendler", "Aviv Zohar", "Sharon Goldberg" ], "n_citations": 507, "n_key_citations": 28, "score": 0 }, { "doc_id": "5115101", "title": "Bitcoin and Beyond: A Technical Survey on Decentralized Digital Currencies", "abstract": "Besides attracting a billion dollar economy, Bitcoin revolutionized the field of digital currencies and influenced many adjacent areas. This also induced significant scientific interest. In this survey, we unroll and structure the manyfold results and research directions. We start by introducing the Bitcoin protocol and its building blocks. From there we continue to explore the design space by discussing existing contributions and results. In the process, we deduce the fundamental structures and insights at the core of the Bitcoin protocol and its applications. As we show and discuss, many key ideas are likewise applicable in various other fields, so that their impact reaches far beyond Bitcoin itself.", "corpus_id": 5115101, "venue": "IEEE Communications Surveys Tutorials", "year": 2016, "author_names": [ "Florian Tschorsch", "Bjorn Scheuermann" ], "n_citations": 1013, "n_key_citations": 65, "score": 0 }, { "doc_id": "41837070", "title": "Privacy in Bitcoin Transactions: New Challenges from Blockchain Scalability Solutions", "abstract": "Bitcoin has emerged as the most successful cryptocurrency since its appearance back in 2009. However, its main drawback to become a truly global payment system is its low capacity in transaction throughput. At present time, some ideas have been proposed to increase the transaction throughput, with different impact on the scalability of the system. Some of these ideas propose to decouple standard transactions from the blockchain core and to manage them through a parallel payment network, relegating the usage of the bitcoin blockchain only to transactions which consolidate multiple of those off chain movements. Such mechanisms generate new actors in the bitcoin payment scenario, the Payment Service Providers, and new privacy issues arise regarding bitcoin users. In this paper, we provide a comprehensive description of the most relevant scalability solutions proposed for the bitcoin network and we outline its impact on users' privacy based on the early stage proposals published so far.", "corpus_id": 41837070, "venue": "MDAI", "year": 2016, "author_names": [ "Jordi Herrera-Joancomarti", "Cristina Perez-Sola" ], "n_citations": 56, "n_key_citations": 5, "score": 1 }, { "doc_id": "1155382", "title": "Enhancing Bitcoin Security and Performance with Strong Consistency via Collective Signing", "abstract": "While showing great promise, Bitcoin requires users to wait tens of minutes for transactions to commit, and even then, offering only probabilistic guarantees. This paper introduces ByzCoin, a novel Byzantine consensus protocol that leverages scalable collective signing to commit Bitcoin transactions irreversibly within seconds. ByzCoin achieves Byzantine consensus while preserving Bitcoin's open membership by dynamically forming hash power proportionate consensus groups that represent recently successful block miners. ByzCoin employs communication trees to optimize transaction commitment and verification under normal operation while guaranteeing safety and liveness under Byzantine faults, up to a near optimal tolerance of f faulty group members among 3f 2 total. ByzCoin mitigates double spending and selfish mining attacks by producing collectively signed transaction blocks within one minute of transaction submission. Tree structured communication further reduces this latency to less than 30 seconds. Due to these optimizations, ByzCoin achieves a throughput higher than PayPal currently handles, with a confirmation latency of 15 20 seconds.", "corpus_id": 1155382, "venue": "USENIX Security Symposium", "year": 2016, "author_names": [ "Eleftherios Kokoris-Kogias", "Philipp Jovanovic", "Nicolas Gailly", "Ismail Khoffi", "Linus Gasser", "Bryan Ford" ], "n_citations": 491, "n_key_citations": 78, "score": 0 }, { "doc_id": "16445179", "title": "Towards Bitcoin Payment Networks", "abstract": "Bitcoin as deployed today does not scale. Scalability research has focused on two directions: 1 redesigning the Blockchain protocol, and 2 facilitating 'off chain transactions' and only consulting the Blockchain if an adjudicator is required. In this paper we focus on the latter and provide an overview of Bitcoin payment networks. These consist of two components: payment channels to facilitate off chain transactions between two parties, and the capability to fairly exchange bitcoins across multiple channels. We compare Duplex Micropayment Channels and Lightning Channels, before discussing Hashed Time Locked Contracts which enable Bitcoin based payment networks. Finally, we highlight challenges for route discovery in these networks.", "corpus_id": 16445179, "venue": "ACISP", "year": 2016, "author_names": [ "Patrick McCorry", "Malte Moser", "Siamak Fayyaz Shahandashti", "Feng Hao" ], "n_citations": 60, "n_key_citations": 5, "score": 0 }, { "doc_id": "24791246", "title": "Design for Trust: An Exploration of the Challenges and Opportunities of Bitcoin Users", "abstract": "Bitcoin is a cryptocurrency which has received increasing interest over the last five years. Built upon a decentralized peer to peer system, it supports transparent, fast, cost effective, and irreversible transactions, without the need for trusting third party financial institutions. We know however little about people's motivation and experience with bitcoin currency. This paper reports on interviews with 20 bitcoin users in Malaysia about their experience and trust challenges. Findings show that bitcoins are used more as store of value for speculative investment or savings' protection. The paper advances the HCI theories on trust by identifying main bitcoin characteristics and their impact on trust, such as decentralization, unregulation, embedded expertise, and reputation, as well as transactions' transparency, low cost, and easiness to complete. We discuss insecure transactions, the risk of dishonest traders and its mitigating strategies. The paper concludes with design implications including support for the transparency of two way transactions, tools for materializing trust, and tools for supporting reversible transactions.", "corpus_id": 24791246, "venue": "CHI", "year": 2017, "author_names": [ "Corina Sas", "Irni Eliana Khairuddin" ], "n_citations": 69, "n_key_citations": 8, "score": 1 } ]

[ { "doc_id": "116031119", "title": "Automated power management strategy for wind power generation system using pitch angle controller", "abstract": "In this literature, a new automated control strategy has been developed to manage the power supply from the wind power generation system to the load. The main objective of this research work is to develop a fuzzy logic based pitch angle control and to develop a static transfer switch to make power balance between the wind power generation system and the loads. The power management control system is a progression of logic expressions, designed based on generating power and load power requirement. The outcome of this work targets at an improved power production, active and reactive power compensation and ensures system load constraints. To validate the proposed control strategy, a detailed simulation study is carried out on a 9 MW wind farm simulation simulated in MATLAB/Simulink environment.", "corpus_id": 116031119, "venue": "Measurement and Control", "year": 2019, "author_names": [ "R Sitharthan", "C K Sundarabalan", "K R Devabalaji", "T Yuvaraj", "A Mohamed Imran" ], "n_citations": 65, "n_key_citations": 0, "score": 1 }, { "doc_id": "127904780", "title": "An improved radial basis function neural network control strategy based maximum power point tracking controller for wind power generation system", "abstract": "This literature presents an improved maximum power point tracking (MPPT) controller based on radial basis function neural network (RBFNN) control strategy to extract optimal power for wind power generation system. The proposed RBFNN controller is trained online using gradient descent algorithm and its network learning rate modification is carried out by the modified particle swarm optimization algorithm. The proposed MPPT controller uses optimal torque control methodology to extract optimal power available in the wind by upholding the generated torque at an optimal level. The most promising aspects of the proposed controller are that it not only extracts maximum available power from wind, but it also rapidly responses to the change in wind speeds and maintains converter with negligible converter losses. To evaluate the performance of the proposed MPSO RBFNN based MPPT controller, an extensive simulation study and experimental analysis is performed. The attained results confirm the enhanced performance of the proposed MPPT controller.", "corpus_id": 127904780, "venue": "Trans. Inst. Meas. Control", "year": 2019, "author_names": [ "R Sitharthan", "T Harish Parthasarathy", "S Sheeba Rani", "K C Ramya" ], "n_citations": 63, "n_key_citations": 0, "score": 1 }, { "doc_id": "159291307", "title": "Wind power generation: A review and a research agenda", "abstract": "Abstract The use of renewable energy resources, especially wind power, is receiving strong attention from governments and private institutions, since it is considered one of the best and most competitive alternative energy sources in the current energy transition that many countries around the world are adopting. Wind power also plays an important role by reducing greenhouse gas emissions and thus attenuating global warming. Another contribution of wind power generation is that it allows countries to diversify their energy mix, which is especially important in countries where hydropower is a large component. The expansion of wind power generation requires a robust understanding of its variability and thus how to reduce uncertainties associated with wind power output. Technical approaches such as simulation and forecasting provide better information to support the decision making process. This paper provides an overview of how the analysis of wind speed/energy has evolved over the last 30 years for decision making processes. For this, we employed an innovative and reproducible literature review approach called Systematic Literature Network Analysis (SLNA) The SLNA was performed considering 145 selected articles from peer reviewed journals and through them it was possible to identify the most representative approaches and future trends. Through this analysis, we identified that in the past 10 years, studies have focused on the use of Measure Correlate Predict (MCP) models, first using linear models and then improving them by applying density or kernel functions, as well as studies with alternative techniques, like neural networks or other hybrid models. An important finding is that most of the methods aim to assess wind power generation potential of target sites, and, in recent years the most used approaches are MCP and artificial neural network methods.", "corpus_id": 159291307, "venue": "Journal of Cleaner Production", "year": 2019, "author_names": [ "Soraida Aguilar Vargas", "Gheisa R T Esteves", "Paula Medina Macaira", "Bruno Q Bastos", "Fernando Luiz Cyrino Oliveira", "Reinaldo Castro Souza" ], "n_citations": 63, "n_key_citations": 0, "score": 1 }, { "doc_id": "155921768", "title": "Seasonal forecasts of wind power generation", "abstract": "The energy sector is highly dependent on climate variability for electricity generation, maintenance activities and demand. In recent years, a few climate services have appeared that provide tailored information for the energy sector. In particular, seasonal climate predictions of wind speed have proven useful to the wind power industry. However, most of the service users are ultimately interested in forecasts of electricity generation instead of wind. Although power generation depends on many factors other than wind conditions, the capacity factor is a suitable indicator to quantify the impact of wind variability on production. In this paper a methodology to produce seasonal predictions of capacity factor for a range of turbine classes is proposed for the first time. The strengths and weaknesses of the method are discussed and the forecast quality is evaluated for an application example over Europe.", "corpus_id": 155921768, "venue": "", "year": 2019, "author_names": [ "Llorenc Lledo", "Veronica Torralba", "Albert Soret", "Jaume Ramon", "Francisco Javier Doblas-Reyes" ], "n_citations": 37, "n_key_citations": 1, "score": 0 }, { "doc_id": "116252365", "title": "Mid to long term wind and photovoltaic power generation prediction based on copula function and long short term memory network", "abstract": "Abstract The accurate estimation of mid to long term wind and photovoltaic power generation is important to the power grid's plan improvement, dispatching optimization, management development, and consumption enhancement. These constitute key factors for the realization of power mutual assistance and complementary dispatch of power generation in the broad area of renewable energy. However, owing to the large time scale of mid to long term prediction, the low accuracy of weather prediction, the limited data samples of historical power generation, and the significant difference between power generation prediction and short term power prediction, short term power prediction technology cannot be directly copied. Thus, the industry has not established yet an effective approach for mid to long term wind and photovoltaic power generation predictions. To solve these problems, this study proposed a method for the mid to long term wind and photovoltaic power generation prediction based on copula function and long short term memory network to achieve an effective extraction of the key meteorological factors that affect power generation owing to nonlinear effects and tendencies, and to deeply exploit the long term dependencies and tendencies from the limited available data samples. Therefore, the proposed approach is suitable for mid to long term wind and photovoltaic power generation prediction using limited data samples. Firstly, the non linear effects and tendency correlation measurements of the copula function were used to extract the key meteorological factors that influence wind and photovoltaic power generation. Secondly, independent wind/photovoltaic prediction models were established based on long short term memory network using the best input condition obtained by comparing these models to the persistence model. Additionally, the independent wind/photovoltaic models were further compared to support vector machine model with the optimal input condition. Thirdly, the joint prediction models of wind and photovoltaic power generation based on long short term memory network were established using different inputs. The persistence model and the support vector machine model were used as benchmarks to compare the elicited performances. Finally, the validity and applicability of the proposed approach were extensively evaluated using actual data from wind farms and photovoltaic power stations in China and the United States. The independent and joint power generation prediction results demonstrated that the proposed approach outperforms both the persistence model and the support vector machine model, and can have widespread applicability in limited data sample cases.", "corpus_id": 116252365, "venue": "Applied Energy", "year": 2019, "author_names": [ "Shuang Han", "Jie Yan", "Yongqian Liu", "Lei Li", "Zheng Wang" ], "n_citations": 68, "n_key_citations": 1, "score": 0 }, { "doc_id": "35109988", "title": "A Distributionally Robust Optimization Model for Unit Commitment Considering Uncertain Wind Power Generation", "abstract": "This paper proposes a distributionally robust optimization model for solving unit commitment (UC) problems considering volatile wind power generation. The uncertainty of wind power is captured by an ambiguity set that defines a family of wind power distributions, and the expected total cost under the worst case distribution is minimized. Compared with stochastic programming, this method may have less dependence on the data of exact probability distributions. It should also outperform the conventional robust optimization methods because some distribution information can be incorporated into the ambiguity sets to generate less conservative results. In this paper, the UC model is formulated based on the typical two stage framework, where the UC decisions are determined in a here and now manner, and the economic dispatch decisions are assumed to be wait and see, made after the observation of wind power outcomes. For computational tractability, the wait and see decisions are addressed by linear decision rule approximation, assuming that the economic dispatch decisions affinely depend on uncertain parameters as well as auxiliary random variables introduced to describe distributional characteristics of wind power generation. It is shown in case studies that this decision rule model tends to provide a tight approximation to the original two stage problem, and the performance of UC solutions may be greatly improved by incorporating information on wind power distributions into the robust model.", "corpus_id": 35109988, "venue": "IEEE Transactions on Power Systems", "year": 2017, "author_names": [ "Peng Xiong", "Panida Jirutitijaroen", "Chanan Singh" ], "n_citations": 170, "n_key_citations": 7, "score": 0 }, { "doc_id": "38640163", "title": "Current methods and advances in forecasting of wind power generation", "abstract": "Wind power generation differs from conventional thermal generation due to the stochastic nature of wind. Thus wind power forecasting plays a key role in dealing with the challenges of balancing supply and demand in any electricity system, given the uncertainty associated with the wind farm power output. Accurate wind power forecasting reduces the need for additional balancing energy and reserve power to integrate wind power. Wind power forecasting tools enable better dispatch, scheduling and unit commitment of thermal generators, hydro plant and energy storage plant and more competitive market trading as wind power ramps up and down on the grid. This paper presents an in depth review of the current methods and advances in wind power forecasting and prediction. Firstly, numerical wind prediction methods from global to local scales, ensemble forecasting, upscaling and downscaling processes are discussed. Next the statistical and machine learning approach methods are detailed. Then the techniques used for benchmarking and uncertainty analysis of forecasts are overviewed, and the performance of various approaches over different forecast time horizons is examined. Finally, current research activities, challenges and potential future developments are appraised.", "corpus_id": 38640163, "venue": "", "year": 2012, "author_names": [ "Aoife M Foley", "Paul Leahy", "Antonino Marvuglia", "Eamon McKeogh" ], "n_citations": 895, "n_key_citations": 31, "score": 0 }, { "doc_id": "22056121", "title": "Direct Quantile Regression for Nonparametric Probabilistic Forecasting of Wind Power Generation", "abstract": "The fluctuation and uncertainty of wind power generation bring severe challenges to secure and economic operation of power systems. Because wind power forecasting error is unavoidable, probabilistic forecasting becomes critical to accurately quantifying the uncertainty involved in traditional point forecasts of wind power and to providing meaningful information to conduct risk management in power system operation. This paper proposes a novel direct quantile regression approach to efficiently generate nonparametric probabilistic forecasting of wind power generation combining extreme learning machine and quantile regression. Quantiles with different proportions can be directly produced via an innovatively formulated linear programming optimization model, without dependency on point forecasts. Multistep probabilistic forecasting of 10 min wind power is newly carried out based on real wind farm data from Bornholm Island in Denmark. The superiority of the proposed approach is verified through comparisons with other well established benchmarks. The proposed approach forms a new artificial neural network based nonparametric forecasting framework for wind power with high efficiency, reliability, and flexibility, which can be beneficial to various decision making activities in power systems.", "corpus_id": 22056121, "venue": "IEEE Transactions on Power Systems", "year": 2017, "author_names": [ "Can Wan", "Jin Lin", "Jianhui Wang", "Yonghua Song", "Zhao Yang Dong" ], "n_citations": 115, "n_key_citations": 4, "score": 0 }, { "doc_id": "6002359", "title": "Probabilistic Forecasting of Wind Power Generation Using Extreme Learning Machine", "abstract": "Accurate and reliable forecast of wind power is essential to power system operation and control. However, due to the nonstationarity of wind power series, traditional point forecasting can hardly be accurate, leading to increased uncertainties and risks for system operation. This paper proposes an extreme learning machine (ELM) based probabilistic forecasting method for wind power generation. To account for the uncertainties in the forecasting results, several bootstrap methods have been compared for modeling the regression uncertainty, based on which the pairs bootstrap method is identified with the best performance. Consequently, a new method for prediction intervals formulation based on the ELM and the pairs bootstrap is developed. Wind power forecasting has been conducted in different seasons using the proposed approach with the historical wind power time series as the inputs alone. The results demonstrate that the proposed method is effective for probabilistic forecasting of wind power generation with a high potential for practical applications in power systems.", "corpus_id": 6002359, "venue": "IEEE Transactions on Power Systems", "year": 2014, "author_names": [ "Can Wan", "Zhao Xu", "Pierre Pinson", "Zhao Yang Dong", "Kit Po Wong" ], "n_citations": 447, "n_key_citations": 24, "score": 0 }, { "doc_id": "54824819", "title": "Simulating European wind power generation applying statistical downscaling to reanalysis data", "abstract": "The growing share of electricity production from solar and mainly wind resources constantly increases the stochastic nature of the power system. Modelling the high share of renewable energy sources and in particular wind power crucially depends on the adequate representation of the intermittency and characteristics of the wind resource which is related to the accuracy of the approach in converting wind speed data into power values. One of the main factors contributing to the uncertainty in these conversion methods is the selection of the spatial resolution. Although numerical weather prediction models can simulate wind speeds at higher spatial resolution (up to 1x1km) than a reanalysis (generally, ranging from about 25km to 70km) they require high computational resources and massive storage systems: therefore, the most common alternative is to use the reanalysis data. However, local wind features could not be captured by the use of a reanalysis technique and could be translated into misinterpretations of the wind power peaks, ramping capacities, the behaviour of power prices, as well as bidding strategies for the electricity market. This study contributes to the understanding what is captured by different wind speeds spatial resolution datasets, the importance of using high resolution data for the conversion into power and the implications in power system analyses. It is proposed a methodology to increase the spatial resolution from a reanalysis. This study presents an open access renewable generation time series dataset for the EU 28 and neighbouring countries at hourly intervals and at different geographical aggregation levels (country, bidding zone and administrative territorial unit) for a 30year period taking into account the wind generating fleet at the end of 2015.", "corpus_id": 54824819, "venue": "", "year": 2017, "author_names": [ "Iratxe Gonzalez-Aparicio", "Fabio Monforti", "Patrick J H Volker", "Andreas Zucker", "Francesco Careri", "Thomas A Huld", "Jake Badger" ], "n_citations": 71, "n_key_citations": 5, "score": 0 } ]

[ { "doc_id": "149828421", "title": "Just Google it! Digital literacy and the epistemology of ignorance", "abstract": "ABSTRACT In this paper we examine digital literacy and explicate how it relates to the philosophical study of ignorance. Using data from a study which explores the knowledge producing work of undergraduate students as they wrote course assignments, we argue that a social practice approach to digital literacy can help explain how epistemologies of ignorance may be sustained. If students are restricted in what they can know because they are unaware of exogenous actors (e.g. algorithms) and how they guide choices and shape experiences online, then a key issue with which theorists of digital literacy should contend is how to educate students to be critically aware of how power operates in online spaces. The challenge for Higher Education is twofold: to understand how particular digital literacy practices pave the way for the construction of ignorance, and to develop approaches to counter it.", "corpus_id": 149828421, "venue": "Teaching in Higher Education", "year": 2019, "author_names": [ "Ibrar Bhatt", "Alison MacKenzie" ], "n_citations": 31, "n_key_citations": 3, "score": 1 }, { "doc_id": "133024470", "title": "Defining digital literacy development: An examination of pre service teachers' beliefs", "abstract": "Abstract We identify three conceptions of digital literacy development populating the literature: digital natives, skill based, and sociocultural perspectives. We adopt a qualitative approach to examine pre service teachers' beliefs about digital literacy development as aligned with each of these three perspectives. While pre service teachers were most commonly found to hold skill based perspectives on digital literacy development, digital natives aligned and sociocultural perspectives were also well represented. We further identify perspectives on digital literacy development uniquely appearing in students' responses. These include pre service teachers' conception of digital literacy development as autonomously developed, technology driven, or project based. We further examine the contexts within which pre service teachers situate digital literacy as emerging; these include both formal and informal settings. The article concludes with a discussion of implications for instruction.", "corpus_id": 133024470, "venue": "Comput. Educ.", "year": 2019, "author_names": [ "Alexandra List" ], "n_citations": 23, "n_key_citations": 0, "score": 1 }, { "doc_id": "150315779", "title": "Design Features of a Professional Development Program in Digital Literacy.", "abstract": "We had been together for five years before we decided to celebrate. Instead of celebrating with a party, we wrote this article to reflect on, wonder about, and consider what we have built together with the help of many willing hands, including 25 faculty colleagues from around the country and around the world. Every summer since 2013, we have worked with K 12 educators, youth media professionals, school leaders, college faculty, and librarians who share our interests in the intersection of education, information, communication, and media studies. Through designing, implementing, and assessing a professional development (PD) program, we have conceptualized digital literacy in relation to the needs of experienced adult learners whose motives for wanting to incorporate digital texts, tools, and technologies into the curriculum vary widely. Our collaborative work in digital literacy is thus located in pragmatic action focused on PD. Over time and as a result of sustained exposure to the many more than 500 adult learners who have participated in an intensive PD program at the University of Rhode Island's Summer Institute in Digital Literacy (SIDL) we have collaboratively built a joint understanding of digital literacy education. In developing the program, we have taken time to consider the interplay among elementary, secondary, higher education, and informal learning contexts, and our approach spans the disciplines of both literacy education and communication/media studies. A little context may be useful here: The first SIDL was held in July 2013, and the program has run annually since then. As a weeklong, 42hour PD program, the SIDL has enrolled participants from 25 states and 15 countries. Each year, 60 to 120 people have enrolled in the program. It was one of three PD programs showcased in the U.S. Department of Education's (2016) National Educational Technology Plan. The program has included keynote lectures from authors, educators, and activists such as Douglas Rushkoff, Howard Rheingold, Joyce Valenza, Christopher Lehman, Dan Gillmor, and Nuala and Len Cabral. During the week, participants select from among 40 workshops in which they can experiment with digital platforms, tools, and texts and learn about research and program development in digital literacy. Each afternoon, participants collaborate with a partner to develop a Design Studio project that is relevant to their needs, showcasing this work to their peers at the end of the week. A variety of facetoface and online learning activities encourage collaboration and metacognitive reflection on one's identity as an educator, learner, team member, and leader. In the summer and extending all year, the learning community shares ideas and", "corpus_id": 150315779, "venue": "", "year": 2019, "author_names": [ "Renee Hobbs", "Julie Coiro" ], "n_citations": 16, "n_key_citations": 0, "score": 0 }, { "doc_id": "202247627", "title": "Digital Literacy, Digital Competence and Research Productivity of Educators", "abstract": "This study determined the relationship between digital literacy, digital competence and research productivity of educators. This research employed the descriptive correlational research design. The respondents of the study were the permanent faculty members of the university. The research instruments utilized were the standardized scales of Being Digital: Digital Literacy Checklist of The Open University (c) 2012 United Kingdom, measured the digital literacy of the respondents. And the digital competence was assessed through the Self Assessment Tool of the European Digital Competence Framework for Educators (DigComEdu) The statistical tools used were the weighted mean, Standard Deviation and Chi Square. The findings revealed that there is a strong and significant relationship between faculty members' digital literacy and research productivity. This means that the increase in understanding, finding, using, and creating information using digital technologies is positively related to faculty members' ability to conduct, complete, present and publish a research article. Likewise, faculty member's digital competence is strong and significantly correlated to their research productivity, which clearly indicates that as their knowledge, skills and attitudes for working, living and learning in the knowledge society increases, there is also a significant increase in their ability to produce publishable research outputs.", "corpus_id": 202247627, "venue": "Universal Journal of Educational Research", "year": 2019, "author_names": [ "Alberto D Yazon", "Karen Ang-Manaig", "Chester Alexis C Buama", "J Tesoro" ], "n_citations": 15, "n_key_citations": 0, "score": 1 }, { "doc_id": "55092491", "title": "Digital competence and digital literacy in higher education research: Systematic review of concept use", "abstract": "Abstract Digital competence and digital literacy are concepts that are increasingly used in public discourse. However, how the concepts are used and how they are defined remains unclear. This paper presents a systematic review of research where these concepts are used in higher education research. The aim is to establish an understanding of referencing strategy to digital literacy and digital competence over time, disciplines, countries, methods and level of analysis. Three databases were used in the systematic literature review: Web of Science, Scopus and Education Resources Information Centre. We delimited the search to title, abstract and keywords in the databases. Inclusion criteria were peer reviewed publications written in English. Initially 107 publications between 1997 and 2017 were found, with 28 addressing digital competence and 79 digital literacy. Our review demonstrates that there is a range of definitions used in higher education research. They vary depending on if the concepts are defined by policy, research or both and whether they focus on technical skills or social practices. This review indicates directions for further research in higher education i) do more research based on critical perspectives to avoid commonsensical use of the concepts, ii) take the development of definitions of these concepts seriously iii) avoid cross referencing incompatibilities and finally iv) engage in critical investigations regarding the legitimacy of policy over research in the domain of higher education research.", "corpus_id": 55092491, "venue": "", "year": 2018, "author_names": [ "Maria Spante", "Sylvana Sofkova Hashemi", "Mona Lundin", "Anne Algers" ], "n_citations": 87, "n_key_citations": 5, "score": 0 }, { "doc_id": "64549646", "title": "Bridging the digital divide: measuring digital literacy", "abstract": "Abstract To promote digital transformation, equal emphasis needs to be placed on digital skills development as to infrastructure development. Integral to investment in digital skills development is the subsequent management and evaluation of digital training programmes. This paper assesses mechanisms to ensure digital training programmes are adequately managed using a standardized data collection framework to measure an internationally accepted digital literacy index. Such an index requires an agile definition of digital literacy, responsive to the fluid nature of the digital economy. The paper also explores the extent to which a G20 advisory body may inform a nationally representative data collection strategy within the context of a data collection process that is cognizant of the evolving demands of businesses and users alike.", "corpus_id": 64549646, "venue": "", "year": 2018, "author_names": [ "Krish Chetty", "Liu Qigui", "Nozibele Gcora", "Jaya Josie", "Li Wenwei", "Chen Fang" ], "n_citations": 59, "n_key_citations": 3, "score": 0 }, { "doc_id": "67160292", "title": "The uses of (digital) literacy", "abstract": "ABSTRACT This article shares research facilitated by a multinational technology provider, converging mobile networked technology (tablets) used across school and home, a technology enhanced community 'third space' providing workshops for students aged 6 9 with their parents/carers. The approach taken avoids the instrumental measurement of functional digital literacy competences, but instead seeks to negotiate a more nuanced and complex understanding of the 'uses of literacy' [from Hoggart, R. 1957. The Uses of Literacy. London: Pelican] in digital contexts and in a deeply situated, specific local setting. Working with our findings, we later put Amartya Sen's concept of capability [Sen, A. K. 2005. \"Human Rights and Capabilities.\" Journal of Human Development 6 (2) 151 166; Sen, A. K. 2008. \"Capability and Well Being.\" In The Philosophy of Economics, edited by D. M. Hausman, 3rd ed. 270 293. Cambridge: Cambridge University Press] to work on our data in order to provide a discussion on how the digital literacy community might distinguish digital competences as functionings from the 'uses' of such competences for a broader range of capabilities.", "corpus_id": 67160292, "venue": "", "year": 2018, "author_names": [ "Julian McDougall", "Mark Readman", "Phil Wilkinson" ], "n_citations": 45, "n_key_citations": 3, "score": 0 }, { "doc_id": "67234243", "title": "Towards an inclusive digital literacy framework for digital India", "abstract": "The purpose of this paper is to illustrate an Inclusive Digital Literacy Framework for vulnerable populations in rural areas under the Digital India program. Key challenges include addressing multiple literacies such as health literacy, financial literacy and eSafety for low literate learners in low resource settings with low internet bandwidth, lack of ICT facilities and intermittent electricity.,This research implemented an educational model based on the proposed framework to train over 1,000 indigenous people using an integrated curriculum for digital literacies at remote settlements. The model uses mobile technology adapted for remote areas, context enabled curriculum, along with flexible learning schedules.,The education model exemplifies a viable strategy to overcome persistent challenges by taking tablet based digital literacies directly to communities. It engages different actors such as existing civil societies, schools and government organizations to provide digital literacy and awareness thereby improving both digital and life skills. It demonstrates the potential value of a comprehensive Digital Literacy framework as a powerful lever for Digital Inclusion.,Policy makers can use this transformational model to extend the reach and effectiveness of Digital Inclusion through the last mile enhancing existing training and service centers that offer the traditional model of Digital Literacy Education.,This innovative mobile learning model based on the proposed Digital Framework for Inclusion instilled motivation, interest and confidence while providing effective digital training and conducting exams directly in the tribal settlements for low literate learners in remote settings. Through incorporating multiple literacies, this model serves to empower learners, enhance potential, improve well being and reduce the risk of exploitation.", "corpus_id": 67234243, "venue": "", "year": 2018, "author_names": [ "Prema Nedungadi", "Rajan Menon", "Georg Gutjahr", "Lynnea Erickson", "Raghu Raman" ], "n_citations": 46, "n_key_citations": 2, "score": 0 }, { "doc_id": "20669604", "title": "Beyond knowledge: Examining digital literacy's role in the acquisition of understanding in science", "abstract": "Abstract Today's students must learn to be critical consumers of the digital learning technologies that are rapidly populating their world. Digital literacy is not an innate skill, and comprises more than facility using the Internet, word processing programs, or social media. Likewise, literacy itself has been redefined as the acquisition of not just knowledge, but also understanding including reasons and evidence for knowing. We wished to build upon Greene et al.'s (2014) research on the role of digital literacy when acquiring knowledge by conducting a similar study with a learning task focused on acquiring understanding. Using a similar single group pretest posttest correlational design with a larger sample of 53 college students but a different learning task focused on understanding, we found evidence of significant differences in digital literacy processing. In this study, participants engaged in more planning, monitoring, and epistemic cognition processing than participants in the previous study. Our findings have important implications for studying and promoting digital literacy, while also illustrating the importance of investing in resource intensive work on differences in digital literacy processing across a variety of domains, contexts, and educational goals.", "corpus_id": 20669604, "venue": "Comput. Educ.", "year": 2018, "author_names": [ "Jeffrey Alan Greene", "Dana Z Copeland", "Victor M Deekens", "Seung B Yu" ], "n_citations": 29, "n_key_citations": 3, "score": 0 }, { "doc_id": "54982507", "title": "The praxis of digital literacy in the EFL classroom: Digital immigrant vs digital native teacher", "abstract": "Myriads of theories account for the primacy of digital literacy on ELT as the demand of the 21 st century, yet studies on digital media literacy of distinct English teacher generations are thin on the ground. Thus, this descriptive qualitative study investigated the utilization of digital literacy in the EFL classroom of senior high school teachers from two generations (digital immigrant and digital native) and their students' responses to the use of digital media in the English classroom in Indonesia. Three instruments were utilized including classroom observations, questionnaires, and interviews. Following ACOT's (Apple Classroom of Tomorrow) framework, the findings show that both teachers were at the adaptation stage in terms of digital literacy and this was reflected on the utilization of digital media in assisting students' learning. Yet, the digital immigrant teacher appeared to be practically more adept in the implementation of digital media. As for the second issue, the students responded positively to the use of digital technology by the teachers to make English class more fun and comprehensible. However, when it comes to an ideal teacher, the students still considered good characters as the main criteria for an ideal teacher. Technology does support teachers in delivering the materials, but the way they behave and treat the students still also plays crucial part in maintaining a good relationship between teachers and students. The results show that the English teachers need to develop their digital literacy to keep up with the current demand to be professional English teachers in the digital era.", "corpus_id": 54982507, "venue": "", "year": 2018, "author_names": [ "Nia Kurniawati", "Elis Homsini Maolida", "Agung Ginanjar Anjaniputra" ], "n_citations": 20, "n_key_citations": 2, "score": 0 } ]

[ { "doc_id": "152630931", "title": "Credibilidade do regime de metas para inflacao no Brasil", "abstract": "This paper makes an empirical analysis of the relation between credibility and management of the interest rate for monetary policy in Brazil after the adoption of inflation targeting. The relation between the credibility (measured by several indices) and the basic interest rate for monetary policy is verified under two perspectives: the target defined by Central Bank of Brazil's Monetary Policy Committee, and the rate which is prevalent in the financial market. The results confirm the hypothesis that a high credibility requires minor variations in the interest rate for the control of inflation after the adoption of inflation targeting. REFERENCIAS AGENOR, P. TAYLOR, M. P. Testing for credibility effects. IMF Staff Papers, v. 39, n. 3, p. 545571, Sep. 1993. AKERLOF, G. A. DICKENS, W. T. PERRY, G. L. The macroeconomics of low inflation. Brookings Papers on Economic Activity, n. 1, p. 1 76, 1996. BACEN Banco Central do Brasil. Carta aberta ao Ministro de Estado da Fazenda. 2002, 2003, 2004. Disponivel em: Acessado em: 20 de novembro de 2005. Helder_Gustavo 2.pmd 26/09/07, 15:09 270 271 Credibilidade do regime de metas para inflacao no Brasil ______. Series temporais. Disponivel em: Acessado em: 1 de abril de 2007. BRUNILLA, A. LAHDENPERA, H. Inflation targets: principal issues and practical implementation. In: HALDANE, A. G. (Ed. Targeting inflation. Bank of England, 1995. p. 119 134. CECCHETTI, S. G. KRAUSE, S. Central bank structure, policy efficiency and macroeconomic performance: exploring empirical relationships. Review, Federal Reserve Bank of St. Louis, v. 84, n. 4, p. 47 59, Jul. Aug. 2002. CUKIERMAN, A. MELTZER, A. H. A theory of ambiguity, credibility, and inflation under discretion and asymmetric information. Econometrica, v. 54, n. 5, p. 1.099 1.128, Sep. 1986. DAVIDSON, R. MACKINNON, J. G. Estimation and inference in econometrics. New York: Oxford Economic Press, 1993. DRAZEN, A. Political economy in macroeconomics. New Jersey: Princeton University Press, 2000. MENDONCA, H. F. de. Metas para a taxa de cambio, agregados monetarios e inflacao. Revista de Economia Politica, v. 22, n. 1 (85) p. 34 52, jan. mar. 2002. ______. Mensurando a credibilidade do regime de metas inflacionarias no Brasil. Revista de Economia Politica, v. 24, n. 3 (95) p. 344 350, jul. set. 2004. ______. Towards credibility from inflation targeting: the Brazilian experience. Applied Economics, 2006. Forthcoming. ELLIOT, G. ROTHENBERG, T. J. STOCK, J. H. Efficient tests for an autoregressive unit root. Econometrica, v. 64, p. 813 826, 1996. FAUST, J. SVENSSON, L. E. O. Transparency and credibility: monetary policy with unobservable goals. NBER, Mar. 1998 (Working paper, n. 6.452) GARCIA, M. G. P. Meia decada de metas para a inflacao. Valor Economico, 05/08/2004. GUJARATI, D. N. Econometria basica. Sao Paulo: Makron Books, 2000. IPEA Instituto de Pesquisa Economica Aplicada. Base de dados macroeconomicos Ipeadata. Brasilia: Ipea. Disponivel em: Acessado em: 1 de novembro de 2005. NAHON, B. F. MEURER, R. A relacao entre a credibilidade do Banco Central e a inflacao no Brasil do regime de metas inflacionarias. In: ENCONTRO DE ECONOMIA DA REGIAO SUL. 8. Porto Alegre, 22 23 de setembro de 2005. Anais eletronicos. Porto Alegre, Anpec Sul, 2005. Disponivel em: ORPHANIDES, A. WIELAND, V. Price stability and monetary policy effectiveness when nominal interest rates are bounded at zero. Federal Reserve Board, 1998 (Working paper) SICSU, J. Expectativas inflacionarias no regime de metas de inflacao: uma analise preliminar do caso brasileiro. Economia Aplicada, v. 6, n. 4, p. 703 711, 2002. SVENSSON, L. E. O. How should monetary policy be conducted in an Era of Price Stability? NBER, Feb. 2000 (Working paper, n. 7.516) (Originais recebidos em marco de 2007. Revistos em junho de 2007. Helder_Gustavo 2.pmd 26/09/07, 15:09 271 pesquisa e planejamento economico ppe v.37 n.2 ago 2007 272", "corpus_id": 152630931, "venue": "", "year": 2007, "author_names": [ "Helder Ferreira de Mendonca", "Gustavo Jose de Guimaraes e Souza" ], "n_citations": 7, "n_key_citations": 0, "score": 0 }, { "doc_id": "155273139", "title": "Theorizing institutional changes: understanding decentralization and federalization in Brazil, Spain and South Africa", "abstract": "In light of the existing theories about institutional change, this paper seeks to advance a common framework to understand the unfolding of decentralization and federalization in three countries: Brazil, Spain, and South Africa. Although in different continents, these three countries witnessed processes after their respective transitions to democracy that transferred administrative and fiscal authority to their regions (decentralization) and vertically distributed political and institutional capacity (federalization) This paper attempts to explain how institutional changes prompted a shift of power and authority towards regional governments by looking at internal sources of change within the intergovernmental arena in the three countries. This analysis is organized around two propositions: that once countries transit to democracy under all encompassing constitutions there are high incentives for institutional change, and that under a bargained intergovernmental interaction among political actors subnational political elites are able to advance their interests incrementally. In short, through a common framework this paper will explain the evolving dynamics of intergovernmental dynamics in three countries.", "corpus_id": 155273139, "venue": "", "year": 2010, "author_names": [ "Helder Ferreira do Vale" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "153924963", "title": "Local Government Reforms in Federal Brazil, India and South Africa: A Comparative Overview", "abstract": "This article examines the changes at the local level of government that have been taking place in Brazil, India and South Africa for the past thirty years as a result of complex federal decision making processes. I summarize the most important federal traits of these countries and identify the role of key institutions behind the fiscal, political and administrative changes in local governments. The article draws on the institutional processes to dissect the anatomy of local government reforms in these countries and concludes that although the changes in local government structures and powers have been taken against the background of transition to democracy and/or democratic deepening, the scope of change in local government varied.", "corpus_id": 153924963, "venue": "", "year": 2013, "author_names": [ "Helder Ferreira do Vale" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "132334267", "title": "The Mosaic of Local Governments in Post Apartheid South Africa: Municipal Asymmetries and Spatial Inequality", "abstract": "Do Vale and Cameron offer an account of the sweeping process of decentralization in post apartheid South Africa. The chapter identifies the main characteristics of local asymmetries in South Africa that emerged out of decentralization and explores the institutional dynamics behind these asymmetries. The findings show that the post apartheid decentralization framework has financially and institutionally enabled mainly the metropolitan municipalities, creating space inequality within the local system of government in South Africa. The chapter also demonstrates through a case study of housing policies in Cape Town and Johannesburg that services vary across metros of different provinces with similar fiscal and administrative capabilities. The chapter concludes that there are several institutional factors behind the creation of an asymmetric regime of place equality in South Africa.", "corpus_id": 132334267, "venue": "", "year": 2017, "author_names": [ "Helder Ferreira do Vale", "Robert Cameron" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "143347383", "title": "Temporality, causality and trajectories: comparative historical analysis in social and political sciences", "abstract": "The article closely examines the comparative methodology proposed under the \"Comparative Historical Analysis\" (CHA) approach. The purpose of the article is to highlight the advantages gained with the application of this comparative methodological approach in the interpretation of current complex events. In doing so, the article provides concrete guidelines on how to apply this approach to enhance historical comparisons. In attempting to accomplish these goals, the article pursues three tasks. First, it shows how historical comparisons are useful for the identification of the patterns, mechanisms and dynamics behind complex process in social and political sciences. Second, the article explains the methodological advantages of using CHA in complex historical processes and exploring some methodological innovations. And lastly, the article applies the CHA approach to two current events: the emergence of the armed group \"Islamic State\" and the Ukrainian Russian territorial dispute. The article concludes that CHA provides an innovative comparative framework to understand complex historical process across countries.", "corpus_id": 143347383, "venue": "", "year": 2015, "author_names": [ "Helder Ferreira do Vale" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "153991678", "title": "Comparing and Measuring Subnational Autonomy across Three Continents", "abstract": "The literature on comparative local government has been primarily focused on measurement of local governments while it has fallen short in theorizing on diverse structures, dynamics, and functioning of local governments throughout the world. This article posits that large data sets measuring local government indicators help to accumulate knowledge but fail to identify and explain the main dynamics behind local governments activities and processes. Attempting to increase comparability of local government across different regions, this article builds on qualitative indicators of decentralization in three sub regions South America, South Asia and Southern Africa and assesses the evolution of subnational autonomy in the most decentralized countries in these sub regions; namely, Brazil, India and South Africa.", "corpus_id": 153991678, "venue": "", "year": 2015, "author_names": [ "Helder Ferreira do Vale" ], "n_citations": 17, "n_key_citations": 2, "score": 1 }, { "doc_id": "153563999", "title": "Mensuracao E Analise Da Credibilidade Do Regime De Metas Inflacionarias No Brasil", "abstract": "This paper makes an empirical analysis of the relation between credibility and management of the interest rate for monetary policy in Brazil after the adoption of inflation targeting. The relation between the credibility (measured by several indices) and the basic interest rate for monetary policy is verified under two perspectives: the target defined by Central Bank of Brazil's Monetary Policy Committee, and the rate which is prevalent in the financial market. The results confirm the hypothesis that a high credibility requires minor variations in the interest rate for the control of inflation after the adoption of inflation targeting.", "corpus_id": 153563999, "venue": "", "year": 2006, "author_names": [ "Gustavo Jose de Guimaraes e Souza", "Helder Ferreira de Mendonca" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "142953639", "title": "Uma experiencia de desenvolvimento metodologico para avaliacao de programas: o modelo logico do Programa Segundo Tempo", "abstract": "Em 2005, a Comissao de Monitoramento e Avaliacao, orgao colegiado de composicao interministerial e coordenado pela Secretaria de Planejamento e Investimentos Estrategicos do Ministerio do Planejamento Orcamento e Gestao (SPI/MP) demandou aos integrantes de sua Camara Tecnica o desenvolvimento de uma proposta metodologica para avaliacao de programas do Plano Plurianual (PPA) Na ocasiao, foi enfatizada a necessidade de uma proposta de avaliacao menos complexa e de menor custo, a qual deveria preceder a contratacao de avaliacoes de maior profundidade. A metodologia, a ser aplicada a qualquer tipo de programa governamental, deveria estar focada no aperfeicoamento de aspectos relacionados ao desenho e ao gerenciamento de programas, mas com potencial para, ao mesmo tempo, sistematizar a demanda por avaliacoes de resultados das acoes do governo. Para o desenvolvimento da proposta, tomou se como fundamento a metodologia de Exame de Avaliabilidade, de Joseph S. Wholey. Esta foi inicialmente concebida enquanto uma pre avaliacao para se verificar se um programa esta desenhado para ser gerenciado por resultados, e identificar quais as mudancas necessarias para que isto ocorra. Uma etapa crucial da metodologia e a construcao do modelo logico de resultados, que cumpre o papel de explicitar a teoria do programa e aferir sua qualidade, verificando se esta bem desenhado e se apresenta um plano plausivel de alcance de resultados. Na experiencia de desenvolvimento metodologico aqui relatada foram acrescentados novos aportes a teoria do modelo logico, tal como concebida por Wholey e outros autores norte americanos. Esta proposta de construcao de modelo logico desenvolvida pelo Ipea foi incorporada pelo MP, inicialmente em carater experimental, em 2007, em 20 programas finalisticos do PPA. Em 2008, sua aplicacao esta em curso em mais 50 programas. The Monitoring and Evaluation Committee demanded to the participants of the Technical Chamber the development of a methodological proposal for the program evaluation of the Plurianual Plan (PPA) At that occasion, it was stressed the necessity of an evaluation proposal less complex and with low cost. Such evaluation methodology, to be applied to every kind of governmental program, must focus the improvement of aspects related to program design and management, but with potential to systematize the demand for results evaluation of government actions. For the methodological development, the main foundation adopted was the methodology of Evaluability Assessment of Joseph S. Wholey, which was initially formulated as a kind of pre evaluation to verify if a program is designed to be managed for results and to identify what changes are needed to achieve results. A crucial stage of this methodology is the elaboration of logic model, which has the function of making explicit the program theory and to assess its quality, verifying if the program is well designed and presents a plausible plan of results achievement. The actual experience of methodological development, presented in this text, incorporated new aspects to the basic theory of logic model. A result to be reported is the adoption, by the Ministry of Planning, of the Ipea proposal for building logic model. This instrument was experimentally applied, in 2007, to 20 programs and is currently being applied to 50 federal programs.", "corpus_id": 142953639, "venue": "", "year": 2009, "author_names": [ "Helder Ferreira", "Martha Cassiolato", "Roberto Gonzalez" ], "n_citations": 15, "n_key_citations": 0, "score": 0 }, { "doc_id": "158308142", "title": "Mobilizando estudantes em defesa do Sistema Unico de Saude (SUS) experiencias interprofissionais do VER SUS Sobral, CE, Brasil", "abstract": "Resumo Trata se de um relato das experiencias do projeto VER SUS no periodo de 2012 a 2016 no processo de formacao interprofissional dos academicos da area da Saude e afins, no municipio de Sobral (CE) Os eixos analiticos abrangeram: construcao historica e social do VER SUS e a experiencia interprofissional no VER SUS. Ao longo desse percurso temporal, aconteceram seis edicoes do projeto, que, por meio de rodas de conversas, oficinas de desenvolvimento interprofissional e devolutivas das imersoes nos territorios e servicos de saude, possibilitaram uma formacao dialogica e horizontal acerca da realidade do SUS. Assim, o VER SUS/Sobral mostrou se uma estrategia potente por estimular a interprofissionalidade e o desenvolvimento de expertises do trabalho em saude entre graduandos e o servico. Para tanto, essas experiencias proporcionaram espacos dialogicos para a (re)construcao do saber.", "corpus_id": 158308142, "venue": "", "year": 2018, "author_names": [ "Vitoria Ferreira do Amaral", "Ana Suelen Pedroza Cavalcante", "Quiteria Larissa Teodoro Farias", "Marcos Aguiar Ribeiro", "David Gomes Araujo Junior", "Diogenes Farias Gomes" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "143421212", "title": "Na parada do lazer: delineando as acoes de lazer em ONGs LGBT de Belo Horizonte", "abstract": "The present study aimed to diagnose and analyze the actions of leisure for Non Governmental Organizations related to the LGBT movement in Belo Horizonte/MG. Therefore, we present how the proposed methodology the documentary research combined with a field survey, applying the immersion in the field and semi structured interviews as data collection instruments. We analyzed two institutions, through interviews with six professionals working within the recreation. The goals of these actions vary, fitting them since the work of self esteem to the empowerment of the public seeking its social protagonism. There are a variety of actions that involve the several contents of recreation, arts, physical activities. Therefore, this work presents some challenges that invite you to think about the field of practice in recreation in LGBT NGOs, participatory planning of actions, use and appropriation of public spaces for recreation, investment in the sector, and awareness of leisure as a right.", "corpus_id": 143421212, "venue": "", "year": 2014, "author_names": [ "Marie Luce Tavares", "Helder Ferreira Isayama" ], "n_citations": 3, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "81915072", "title": "Dukungan Sosial Keluarga Dengan Tingkat Kecemasan Ibu Hamil Trimester III", "abstract": "Pendahuluan Angka kematian ibu (AKI) hamil, bersalin, 42 hari paska persalinan di Indonesia masih tinggi, penyebab tingginya AKI di Indonesia adalah kurang perhatiannya keluarga terutama peran serta suami selama ibu hamil, padahal peran suami sangat berperan untuk membantu menenangkan kondisi fisik maupun psikis seorang istri. Kesehatan wanita juga sangat dipngaruhi oleh status mental kejiwaanya, oleh karena itu kesehatan jiwa perlu mendapatkan perhatian, suatu kenyataan bahwa lebih banyak wanita yang lebih cepat bereaksi terhadap kondisi yang menimbulkan stress dan gangguan jiwa dibanding pria. Gangguan kesehatan jiwa yang dialami wanita pada usia reproduksi sering berhubungan dengan perannya sebagai isteri, ibu dan pekerja. Tujuan hubungan dukungan sosial keluarga dengan tingkat kecemasan ibu hamil trimester III di Puskesmas Windusari Kabupaten Magelang. Merode Deskriptif Asosiasi, cross sectional, besar sampel sebesar 30 responden. Hasil Hasil uji statistik korelasi diperoleh nilai koefisien korelasi (r 0,494) dengan taraf signifikansi (a 0,006) berarti Ho ditolak (a 0,05) sehingga dapat disimpulkan bahwa ada hubungan yang signifikans antara dukungan sosial keluarga dengan tingkat kecemasan pada ibu hamil Trimester III di Puskesmas Windusari. Simpulan Nilai r 0,494 menunjukkan tingkat korelasi tidak rendah, sehingga semakin rendah dukungan sosial keluarga akan semakin tinggi tingkat kecemasan pada ibu hamil trimester III di Puskesmas Windusari, dan semakin tinggi dukungan sosial keluarga maka semakin rendah tingkat kecemasan ibu hamil trimester III. Kata kunci AKI, kecemasan, trimester III", "corpus_id": 81915072, "venue": "", "year": 2017, "author_names": [ "Is Susilaningsih", "Syamsudin Syamsudin", "Dewi Kartika Sari" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "77351305", "title": "PENGARUH KECEMASAN IBU HAMIL TRIMESTER I TERHADAP MUNCULNYA GANGGUAN MORNING SICKNESS DI WILAYAH KERJA PUSKESMA KUSUMA BANGSA KOTA PEKALONGAN TAHUN 2005", "abstract": "Kehamilan merupakan proses alami dan normal dalam kehidupan wanita pada masa reproduksi. Selama 3 bulan pertama, wanita mengalami perubahan perubahan fisik maupun psikis untuk mempersiapkan petumbuhan janin, masa persalinan dan menyusui. Keadaan perubahan yang terjadi dapat menimbulkan hambatan atau gangguan dalam kehamilan. Morning Sickness merupakan gangguan khas kehamilan yang umumnya sering terjadi pada awal kehamilan. Walaupun alasan timbulnya Morning Sickness belum pasti, namun para ahli meyakini gangguan ini terjadi karena perubahan hormon kehamilan. Selain itu reaksi psikologis seperti kecemasan juga diyakini dapat memicu munculnya Morning Sickness dalam kehamilan. Penelitian ini menganalisa pengaruh kecemasan ibu hamil trimester I terhadap munculnya gangguan Morning Sickness di Wilayah Kerja Puskesmas Kusuma Bangsa kota Pekalongan tahun 2005. Hal ini dilatar belakangi dengan hampir semua ibu hamil mengalami gangguan Morning Sickness pada awal kehamilannya (trimester I) Desain yang digunakan dalam penenlitian ini menggunakan metode deskripstif analitik dengan pendekatan cross sectional Hipotesis ditetapkan untuk melihat apakah ada pengaruh kecemasan dengan gangguan Morning Sickness. Hasil uji statistik Chi Square menunjukkan tidak ada pengaruh yang bermakna antara kecemasan dengan gangguan Morning Sickness dengan P>a (0,5 0,1) Namun ada kecenderungan ibu hamil trimester I yang cemas berpeluang 3,2 kali mempengaruhi ibu hamil untuk mengalami Morning Sickness dibandingkan dengan ibu hamil yang tidak Morning Sickness Saran kepada pihak puskesmas Kusuma Bangsa Kota Pekalongan untuk memberikan perhatian yang lebih kepada ibu hamil terutama dari aspek psikologis serta kecemasan, khususnya bagi ibu hamil yang mengalami gangguan ketidaknyamanan seperti Morning Sickness agar komplikasi kehamilan yang ditimbulkan atau diperberat oleh factor psikis dapat diminimalkan. Kata kunci: Kecemasan, gangguan Morning Sickness Kehamilan", "corpus_id": 77351305, "venue": "", "year": 2007, "author_names": [ "Nurul Izzah", "Aida Rusmariana", "Teti Retnawati" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "226068280", "title": "Analisis Tingkat Pengetahuan Remaja Tentang Gejala Premenstruasi Sindrom Dengan Aplikasi Kalender Menstruasi", "abstract": "Siklus pada perempuan dianggap lebih rumit, karena seorang perempuan kodratnya adalah untuk haid, hamil, melahirkan, menyusui, dan mengalami menopause, sehingga memerlukan pemeliharaan kesehatan yang lebih intensif selama hidupnya. Pada remaja seringkali datangnya menstruasi diiringi dengan gejala yang tidak nyaman yang dikenal dengan premenstrual syndrome (PMS) Gejala premenstruasi sindrom merupakan keadaan munculnya beberapa keluhan ketidaknyamanan secara fisik dan psikis. Gejala PMS merupakan gangguan kesehatan paling banyak yang dikeluhkan oleh wanita usia reproduksi. Gejala PMS yang sering muncul seperti nyeri perut, sakit kepala, mudah emosi dan cemas. Tujuan umum penelitian ini adalah untuk mengetahui hasil analisa tingkat pengetahuan remaja tentang gejala premenstruasi sindrom dengan aplikasi kalender menstruasi. Desain penelitian ini bersifat analitik kuantitatif dengan pendekatan one group pretest posttest design. Sampel penelitian adalah anggota Posyandu Remaja di Kelurahan Gunung Anyar Tambak sejumlah 40 orang. Setelah dilakukan uji statistik pada tabulasi silang diatas dengan menggunakan metode Chi square test, dengan berdasarkan x2 tabel 3,841 dan besaran x2 hitung 6,423; maka x2 hitung 6,423 x2 tabel 3.841. Dengan demikian dapat disimpulkan bahwa \"penggunaan aplikasi kalender menstruasi secara teratur memiliki kaitan dalam meningkatkan pengetahuan remaja tentang gejala premenstruasi sindrom\" Kata kunci: remaja; pengetahuan; premenstrual syndrome; aplikasi kalender menstruasi", "corpus_id": 226068280, "venue": "", "year": 2020, "author_names": [ "Nyna Puspita Ningrum" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "214250696", "title": "Prevention strategies for reproductive disorders in fimale teenager in the Islamic Boarding School Bahrul Ulum DU SKPC", "abstract": "Personal hygiene saat menstruasi adalah tindakan untuk memelihara kesehatan dan kebersihan pada daerah kewanitaan pada saat menstruasi. Bila saat menstruasi tidak menjaga kebersihan yang baik akan berisiko mengalami infeksi alat reproduksi. Hal ini disebabkan oleh peristiwa menstruasi yang mengeluarkan darah kotor. Pada saat menstruasi, pembuluh darah dalam rahim sangat mudah terkena infeksi karena darah dan keringat keluar serta menempel pada vulva dapat menyebabkan daerah genetalia menjadi lembab. Berbagai ganguan reproduksi yang terjadi akibat terinfeksi kuman saat menstruasi antara lain Infeksi Saluran Reproduksi (ISR) infeksi Bacterial Vaginosis (BV) Infeksi Saluran Kemih (ISK) infeksi saluran reproduksi jika diatasi segera dapat menimbulkan keganasan, dan kelahiran preterm serta berat badan lahir rendah pada wanita hamil. Untuk mencegah terjadinya permasalahan pada organ reproduksi maka perlu memperhatikan hygiene menstruasi. Salah satu upaya yang dapat dilakukan untuk mencegah gangguan sistem reproduksi pada wanita dengan meningkatkan pengetahuan dan kesadaran remaja putri sejak dini tentang personal hygiene saat menstruasi melalui penyuluhan kesehatan dan pendidikan kesehatan.Tujuan penelitian ini adalah untuk mengetahui strategi pencegahan gangguan reproduksi pada remaja putri di Pondok Pesantren Bahrul Ulum Kec. Rambah Kab. Rohul. Jenis penelitian ini adalah kuantitatif analitik dengan rancangan penelitian yang digunakan adalah praeksperimen dengan pendekatan pre test post test. Sampel penelitian ini dilakukan pada 50 responden. Hasil analisa data dengan uji T dependen diketahui bahwa penyuluhan tentang personal hygiene berpengaruh secara signifikan terhadap perilaku remaja putri pada saat menstruasi dengan nilai p= 0,001. Disarankan untuk melakukan penyuluhan tentang personal hygiene saat menstruasi sehingga dapat dijadikan salah satu strategi dalam mencegah gangguan kesehatan reproduksi", "corpus_id": 214250696, "venue": "", "year": 2019, "author_names": [ "Yuyun Bewelli Fahmi", "andri ana", "Elvira Junita", "Dian Indah Permatasari" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "195440017", "title": "HUBUNGAN PERILAKU MEROKOK TERHADAP KEJADIAN DISMENORE DI KOTA MALANG", "abstract": "Latar Belakang: Gangguan yang disebabkan oleh aktifitas merokok yang berhubungan dengan kesehatan reproduksi pada wanita dapat bermacam macam bentuknya, mulai dari gangguan haid, early menopause (lebih cepat berhenti haid) hingga sulit untuk hamil. Pada wanita perokok terjadi pula peningkatan risiko munculnya kasus kehamilan di luar kandungan dan keguguran. Selain itu, sebagaimana yang tertulis dengan jelas dalam setiap kemasan rokok, kebiasaan merokok dapat menyebabkan timbulnya kecacatan pada janin. Sejauh ini terdapat kurang lebih dua puluh penelitian yang memaparkan kaitan merokok dengan infertilitas. Merokok dapat menyebabkan dismenore saat menstruasi dikarenakan rokok mengandung zat yang dapat mempengaruhi metabolisme estrogen, sedangkan estrogen berperan mengatur proses menstruasi dan kadar estrogen harus cukup di dalam tubuh. Metode Penelitian: Desain penelitian yang digunakan adalah (deskriptif korelasional dengan pendekatan retrospectif) dengan tujuan untuk mengetahui hubungan perilaku merokok terhadap kejadian dismenore. Subjek penelitian ini wanita wanita yang mempunyai perilaku merokok yang sudah menarche dan belum menopouse, diambil dengan teknik total sampling. Analisa data dilakukan dengan menggunakan sistem komputerisasi uji Spearmen Rank. Hasil: Hasil analisis menggunakan komputerisasi SPSS 15 dengan 32 responden didapatkan nilai Sig. (2 tailed) lebih kecil dari pada alpha (0.000<0.05) sehingga H0 ditolak. Menggunakan uji Spearmen Rank di dapatkan nilai 0.716 maka H0 ditolak dan H1 diterima untuk hubungan perilaku merokok dengan kejadian dismenore. Kesimpulan: Ada pengaruh antara perilaku merokok terhadap kejadian dismenore. Diharapkan kepada institusi keperawatan baik akademik maupun praktisi agar melaksanakan serta memberikan penyuluhan dan promosi kesehatan kepada masyarakat luas khususnya kepada para wanita yang mempunyai perilaku merokok, penyuluhan kesehatan tentang bahaya merokok dan cara penanganan untuk mengatasi dismenore.", "corpus_id": 195440017, "venue": "", "year": 2016, "author_names": [ "Muhammad Ilwan Huzari" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "190998648", "title": "Seleksi dan Tindakan Medis Istri Sebelum Program Bayi Tabung", "abstract": "Bayi tabung merupakan salah satu alternatif untuk pengobatan pasangan tidak subur yang belum berhasil hamil dengan cara alami. WHO memperkirakan 50 80 juta pasangan di dunia mengalami infertlitas, dimana 7 15% nya berada pada usia reproduksi (15 40 tahun) Kejadian terbanyak sebagai penyebab infertilitas adalah wanita yaitu sebesar 40 60% Kemajuan tehnologi pada dekade ini cukup pesat dengan ditemukannya berbagai cara diagnostik untuk membantu memecahkan masalah gangguan fertilitas. Pilihan cara pengobatan berkaitan dengan kemungkinan mendapatkan kehamilan dengan terapi yang mudah dan murah tetapi dengan keberhasilan kehamilan yang rendah atau dengan pengobatan yang lebih komplek dan mahal. Untuk mempersiapkan pasien yang akan mengikuti program bayi tabung dilakukan beberapa pemeriksaan mengenai usia wanita, lama perkawinan, penyebab gangguan fertilitas, pemeriksaan dan pengobatan yang pernah dilakukan dan yang tak kalah pentingnya memberikan penjelasan yang rinci tentang proses bayi tabung", "corpus_id": 190998648, "venue": "", "year": 2014, "author_names": [ "Syarief Hidayat" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "78974025", "title": "Asuhan Kebidanan Gangguan Reproduksi Wanita pada Ny S P3a0 dengan Menoragia Disertai Anemia Ringan di RSUD Sukoharjo", "abstract": "ABSTRAKLatar Belakang Menoragia menyebabkan anemia akut dan morbiditas. Terdapat 28,30% dari 106 kasus di RSUD Sukoharjo dari Januari hingga Desember 2014.Tujuan untuk memahami dan mempelajari asuhan kebidanan dengan menoragia di RSUD Sukoharjo secara komprehensif.Metode Observasional deskriptif dengan pendekatan studi kasus. Data diambil melalui wawancara, observasi, pemeriksaan, dan studi rekam medis. Analisis data secara deskriptif berdasar 7 langkah Varney dan SOAP.Hasil Ny S mengeluh menstruasi yang banyak. Pemeriksaan inspeksi didapatkan hasil darah encer warna gelap dengan sedikit gumpalan darah. Hasil pemeriksaan USG terdapat polip endometrium. Dilakukan pemberian terapi infus RL 20 tpm, tindakan kuretase, terapi injeksi asam traneksamat 500mg, ampicilin 1gr, dan asam mefenamat 3x500mg serta perawatan di rumah sakit selama 3 hari. Perdarahan ibu sudah berhenti.Kesimpulan Ny S dengan menoragia telah mendapatkan tindakan kuretase dan perdarahannya berhenti. Kesenjangan antara teori dan praktik tidak ditemukan.Kata Kunci Asuhan Kebidanan, Gangguan Reproduksi, Menoragia.ABSTRACTBackground:Menorraghia causes acute anemia andmorbidity. There were30 (28.30% menorraghia cases out of 106 at the Local General Hospital of Sukoharjo from January to December 2014.Objective:The objective of this research is to study and understand the midwifery care ofmenorraghia at theLocal General Hospital of Sukoharjo comprehensively.Method:This research used the observational descriptive research method with the case study approach. The data of the research were collected through in depth interview, direct observation, physical examination, and content analysis of medical record. The data of research were descriptively analyzed by using Varney's seven steps and SOAP.Result:Mrs Scomplained of excessive menstruations. The inspection showed that the blood was watery and had dark color with little spot. The USG examination showed that the client had endometrial polyps. Then she was given infusion therapy of RL 20 tpm, curettage intervention, tranexamic acid 500mginjection therapy, ampicillin 1 gr, and mefenamicacid 3x500mg. The treatment was done at the hospital for three days.Followingthe three day treatment in hospital, the bleeding completely stopped.Conclusion:Mrs. Swith menorraghia received curretage, and her bleeding stopped. There is not any gap between the theory and the practice.Keywords :Midwifery care, reproductive disorder, menorraghia.", "corpus_id": 78974025, "venue": "", "year": 2015, "author_names": [ "Elisa Agustina" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "73990741", "title": "ASUHAN KEBIDANAN GANGGUAN REPRODUKSI WANITA PADA NY. S UMUR 44 TAHUN DENGAN PENDARAHAN UTERUS DISFUNGSIONAL DI RSUD SUKOHARJO", "abstract": "ABSTRACTBackground. The number of dysfunctional uterine bleeding incidences atSukoharjo Hospital from January to December 2014 was 37 (35 The objectiveis to study and understand the midwifery care on the dysfunctional uterinebleeding case at Sukoharjo Hospital.Method. This research used the observational descriptive method with the casestudy approach. Subject of research was Mrs.S P3A0 with dysfunctional uterinebleeding at Sukoharjo Hospital. The data of research were collected through indepthinterview, direct observation, and medical record. Data of research weredescriptively analyzed by using Varney's Seven Steps.Result. Mrs.S P3A0 was admitted to the hospital with bleeding for 14 days.Internal examination showed there was spotting with little amount of stolsel. USGexamination showed that gynecological disorders weren't present. Client wasexposed to curettage on the third day visit, and given pre curettage therapies(antifibrinolytic, antibiotic, anesthetic therapies) and postcurettage (antibiotic,analgesic, roborantia therapies) Pathological anatomic examinations were done,and malignancy wasn't present.Conclusion. Mrs.S P3A0 aged 44 years old suffered from functional uterinebleeding. The treatment lasted for four days. Following the treatment, the generalconditions were good, and no gap between theory and practice was observed.Keywords. Midwifery care, reproductive disorder, dysfunctional uterine bleedingABSTRAKLatar Belakang. Angka kejadian perdarahan uterus disfungsional di RSUDSukoharjo yakni 35 atau 37 kasus dari Januari hingga Desember 2014. Tujuanuntuk mempelajari dan memahami asuhan kebidanan pada kasus perdarahanuterus disfungsional di RSUD Sukoharjo.Metode. Observasional deskriptif dengan pendekatan studi kasus. Subjekpenelitian Ny.S P3A0 dengan perdarahan uterus disfungsional, tempat: RSUDSukoharjo. Pengambilan data melalui wawancara, observasi dan studi dokumenrekam medik. Analisis data secara deskriptif berdasar 7 langkah varney.Hasil. Ny.S P3A0 datang dengan keluhan perdarahan selama 14 hari. Pemeriksaandalam didapatkan pengeluaran darah dengan sedikit stolsel. USG menunjukkantidak ada kelainan ginekologis. Dilakukan kuretase pada hari ke 3 pasien datang.Diberikan terapi prekuretase (Antifibrinolitik, antibiotik, dan anestesi) danpostkuretase (antibiotik, analgesik dan roborantia) Postkuretase dilakukanpatologi anatomi, hasil tidak tampak tanda keganasan. Perdarahan berupaspotting.Kesimpulan. Ny.S P3A0 umur 44 tahun dengan perdarahan uterus disfungsional.Perawatan selama 4 hari. Akhir perawatan keadaan membaik. Tidak terdapatkesenjangan antar teori dengan praktik.Kata kunci. asuhan kebidanan, gangguan reproduksi, perdarahan uterusdisfungsional", "corpus_id": 73990741, "venue": "", "year": 2015, "author_names": [ "Caya Nuaryalstonia" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "190896668", "title": "Perbedaan Kadar Vitamin D pada Wanita Usia Reproduksi Tidak Hamil dan Wanita Hamil Trimester Pertama", "abstract": "Abstrak Tujuan Penelitian ini untuk mengetahui perbedaan kadar vitamin D pada wanita usia reproduksi tidak hamil dan wanita hamil trimester pertama. Metode Penelitian ini merupakan penelitian analitik observasional dengan metode rancangan Comparative Cross Sectional yaitu membandingkan kadar vitamin D pada dua kelompok yaitu wanita usia reproduksi tidak hamil dan wanita hamil trimester pertama. Subjek penelitian yaitu wanita usia reproduksi (18 35 tahun) tidak hamil dan bertempat tinggal di kota Bandung dengan wanita dengan usia kehamilan trimester pertama yang memenuhi kriteria inklusi penelitian (n=60) Pada kedua kelompok dilakukan pemeriksaan kadar vitamin D kemudian diperiksa dengan metode Electro chemiluminescence immunoassay (ECLIA) Penelitian ini dilakukan di RSUP Dr. Hasan Sadikin Bandung pada bulan Februari April 2018. Hasil Hasil penelitian menunjukkan kadar vitamin D rata rata pada kelompok wanita usia reproduksi tidak hamil adalah 18,73 (6,93) ng/mL, sementara pada kelompok wanita hamil trimester pertama yaitu 13,87 (4,04) ng/mL. Perbedaan kadar rata rata vitamin D pada kedua kelompok tersebut bermakna dengan nilai p<0,001 Simpulan Kadar vitamin D pada kelompok wanita hamil trimester pertama lebih rendah dibandingkan dengan kelompok usia reproduksi tidak hamil Kata kunci Vitamin D, wanita usia reproduksi tidak hamil, wanita hamil trimester pertama Abstract Objective This research aims to compare differences in vitamin D levels in the group of non pregnant women of reproductive age and group of first trimester pregnant women. Method This type of research is an observational analytic study with Comparative Cross Sectional design method that is comparing vitamin D levels in two groups: non pregnant women of reproductive age and first trimester pregnant women. Subjects of the study were women of reproductive age (18 35 years) who were not pregnant and lived in Bandung with women with first trimester gestational age who fulfilled the inclusion criteria (n=60) In both groups examined vitamin D levels and then examined by Electro chemiluminescence immunoassay (ECLIA) method. This research was conducted at Hasan Sadikin Hospital Bandung in February April 2018 Results The results showed that the average vitamin D level in the non pregnant women of reproductive age group was 18.73 (6.93) ng/mL, while in the first trimester pregnant women group was 13.87 (4.04) ng/mL. The difference in mean vitamin D levels in both groups was significant with p <0.001 Conclusion Levels of vitamin D in the group of first trimester pregnant women are lower than the group of non pregnant women of reproductive Keywords Vitamin D, women of reproductive age not pregnant, first trimester pregnant women", "corpus_id": 190896668, "venue": "Indonesian Journal of Obstetrics Gynecology Science", "year": 2019, "author_names": [ "Mochamad Rizkar Arev Sukarsa", "Radiastomo Samekta Budi", "Benny Hasan Purwara", "Hanom Husni Syam", "Johanes Cornelius Mose", "Yudi Mulyana Hidayat", "R M Sonny Sasotya" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "74586056", "title": "Asuhan Kebidanan Gangguan Sistem Reproduksi Wanita pada Ny. N Umur 38 Tahun P4A0 dengan Amenorea Sekunder di RSUD Surakarta", "abstract": "ABSTRAKLatar Belakang Prevalensi terjadinya amenorea sekunder di luar kehamilan, menyusui dan menopause adalah 3% 4% Di RSUD Surakarta, terdapat 4,7% kasus amenorea sekunder. Adapun tujuan dari penelitian ini adalah untuk memahami dan mempelajari asuhan kebidanan dengan amenorea sekunder di RSUD Surakarta secara komprehensif.Metode Observasional deskriptif dengan pendekatan studi kasus. Subyek penelitian wanita dengan amenorea sekunder. Tempat di RSUD Surakarta. Data diambil melalui wawancara, observasi, pemeriksaan, dan studi rekam medis. Analisis data secara deskriptif berdasar 7 langkah Varney dan SOAP.Hasil Ny.N mengeluh tidak menstruasi selama 3 bulan pasca menyusui selama 2 tahun. Hasil USG tidak terdapat kelainan ginekologis. Pasien sedang memiliki hubungan kurang harmonis dengan suami. Penatalaksanaan diberikan prothyra 10mg 1x1 tablet/hari selama 10 hari, pasien belum menstruasi dilanjutkan pemberian prothyra 10mg 1x1 tablet/hari dan lanturol E 200 1x1 tablet/hari selama 10 hari, belum mengalami menstruasi.Kesimpulan Ny.N belum mengalami menstruasi sehingga diperlukan penatalaksanaan selanjutnya. Kesenjangan tidak dilakukan pemeriksaan tanda hirsutisme dan pemeriksaan ginekologis, tidak dilakukan pemeriksaan HCG urin, uji prolaktin dan TSH, tidak diberikan estrogen dan progesterone siklik setelah uji progestin.Kata Kunci Asuhan Kebidanan, Gangguan Reproduksi, Amenorea.ABSTRACTBackground: The prevalence of the occurrence of secondary amenorrhea beyond the normal time of pregnancy, breastfeeding, and menopause was 3% 4% At the Local General Hospital of Surakarta, there was 4.7% case of secondary amenorrhea. The objective of this case study is to study and understand the midwifery care of the secondary amenorrhea at the Local General Hospital of Surakarta comprehensively.Method: This research used the observational descriptive research with the case study approach. The subject of the research was a woman with secondary amenorrhea. The research location was at the Local General Hospital of Surakarta. The data were gathered through interview, direct observation, and document study of medical record. The data were analyzed descriptively based on the seven measures claimed by Varney and SOAP.Result: Mrs. N complained of not having her period for 3 months following a two year breastfeeding. The result of USG showed no gynecological disorder. At that time, the patient had an unharmonious relationship with her husband. For the treatment management, she was given prothyra 10mg 1x1 tablet/day for 10 days. Afterwards, when the patient had not had her period yet, she was given prothyra 10mg 1x1 tablet/day and lanturol E 200 1x1 tablet/day for 10 days, but she still had not yet got her period.Conclusion: Mrs. N still had not yet got her period, so she needed further treatment. The gap was found, for there were no examinations sign of hirsutism and nor gynecology. There were also no examinations of urine HCG level, prolactin nor TSH tests. The patient was also not given cyclic estrogen and progesterone therapy after the progestin test.Keywords: Midwifery care, reproductive disorder, amenorrhea.", "corpus_id": 74586056, "venue": "", "year": 2015, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "114049093", "title": "Assembly Line Balancing using Artificial Neural Network: A Case Study of Tricycle Assembly Line", "abstract": "This study reports the use of Artificial Neural Network in balancing an existing single model assembly line of Boulous Enterprises Limited. A multilayer perceptron, with the help of online training was utilized, due to its ability to accommodate large dataset. The results obtained showed that standard cycle time of 576 seconds in the existing line was reduced to 526 seconds. Also, the average idle time was reduced from 105 seconds to 56 seconds, and the output of tricycles produced per day was increased from 50 to 55. The results clearly showed that a better balanced line was obtained with the use of Artificial Neural Network. Keywords Line Balancing, bottlenecks, Idle Time, Efficiency", "corpus_id": 114049093, "venue": "", "year": 2016, "author_names": [ "Anthony I Unuigbe", "Henry Unuigbe", "B Ehebhamen", "C Ekhareafo" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "212834456", "title": "Artificial Neural Network for Assembly Line Balancing", "abstract": "This study examines an assembly line balancing using artificial neural network. An organization that balances the unique workloads must respect the limits and restrictions that hinder the assembly. To optimize the very specific operations, balancing an assembly line may require different methods, including: genetic algorithm, heuristic approach, simulation techniques, the ant colony optimization (ACO) etc. but in this study, artificial neural networks was applied to solving problems of assembly line balancing. This study also explores the characteristics of the assembly line and the classification of the assembly balancing problems, suggesting as an artificial neural network solve.", "corpus_id": 212834456, "venue": "American International Journal of Sciences and Engineering Research", "year": 2019, "author_names": [ "Pius Charles Ucheagwu", "Johnmary Ugochukwu Okeke", "Christian I Okonta", "Efosa Osamuyimwen" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "57242627", "title": "A mathematical model and artificial bee colony algorithm for the lexicographic bottleneck mixed model assembly line balancing problem", "abstract": "Typically, the total number of required workstations are minimised for a given cycle time (this problem is referred to as type 1) or cycle time is minimised for a given number of workstations (this problem is referred to as type 2) in traditional balancing of assembly lines. However, variation in workload distributions of workstations is an important indicator of the quality of the obtained line balance. This needs to be taken into account to improve the reliability of an assembly line against unforeseeable circumstances, such as breakdowns or other failures. For this aim, a new problem, called lexicographic bottleneck mixed model assembly line balancing problem (LB MALBP) is presented and formalised. The lexicographic bottleneck objective, which was recently proposed for the simple single model assembly line system in the literature, is considered for a mixed model assembly line system. The mathematical model of the LB MALBP is developed for the first time in the literature and coded in GAMS solver, and optimal solutions are presented for some small scale test problems available in the literature. As it is not possible to get optimal solutions for the large scale instances, an artificial bee colony algorithm is also implemented for the solution of the LB MALBP. The solution procedures of the algorithm are explored illustratively. The performance of the algorithm is also assessed using derived well known test problems in this domain and promising results are observed in reasonable CPU times.", "corpus_id": 57242627, "venue": "J. Intell. Manuf.", "year": 2019, "author_names": [ "Ibrahim Kucukkoc", "Kadir Buyukozkan", "Sule Itir Satoglu", "David Zhengwen Zhang" ], "n_citations": 26, "n_key_citations": 0, "score": 1 }, { "doc_id": "212572855", "title": "An Artificial Immune System Approach for Type E Assembly Line Balancing Problem", "abstract": "The manufacturing industry has evolved in the past decades, due to the competition of the global economy, where the market demands high quality and customized products, and meeting lowest possible costs are paramount. One of the many processes in manufacturing is the assembly line operation, namely the assembly line balancing (ALB) problem. ALB problem is dependent on optimum resource utilization in order to improve production output, reduces costs, and shortens production lead times. In these recent years, various approaches have been proposed to solve the complexity of assembly line balancing operations, which composed of exact, heuristic, and metaheuristic approaches. However, little work had been done to solve the type E assembly line balancing problem. This paper proposed an approach using artificial immune system (AIS) algorithm, namely as the artificial immune cell (AIC) approach, for solving type E assembly line balancing problem. An initialization mechanism through the bone marrow model and probabilistic clonal selection mechanism had encouraged efficient exploration and exploitation of the solution space. The computational results over 242 instances of 24 datasets had demonstrated the efficiency of the proposed AIC approach by achieving high quality solutions (up to 85.94% optimum solutions was obtained) Also, the results were statistically justified by comparing with multi rule multi objective simulated annealing (MRMOSA) priority based genetic approach (PriGA) two phased genetic approach (2P GA) and assignment genetic approach (MAGA)", "corpus_id": 212572855, "venue": "", "year": 2018, "author_names": [ "Mohd Nor Akmal Khalid", "Umi Kalsom Yusof", "Zarul Fitri Zaaba" ], "n_citations": 1, "n_key_citations": 1, "score": 0 }, { "doc_id": "198986368", "title": "Minimize Idle Time in Two Sided Assembly Line Balancing Using Exact Search Approach", "abstract": "Growing interests of customers in customized products and increasing competitions between companies to configure and balance their manufacturing systems more effectively within limited space and time. Two sided assembly lines are usually constructed to produce large sized high volume products such as buses, trucks, automobiles, and some domestic products In this paper, the proposed mathematical model is applied to solve benchmark problems of two sided assembly line balancing problem to maximize the workload on each workstation which tends to increase the compactness in the beginning workstations which also helps to minimize the length and idle time of the line. Since the problem is well known as np hard problem a lingo solver based solution method is proposed to solve the problem. Through computational experiments, the performance of the proposed Lingo model is checked with various benchmark problem instances. Based on the computational results, idle time in mated stations and the length of the mated station's line is decreased.", "corpus_id": 198986368, "venue": "MSIE 2019", "year": 2019, "author_names": [ "Ashish Yadav", "Sunil Agrawal" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "211091773", "title": "Single Model Assembly Line Balancing Using Enhanced Genetic Algorithm", "abstract": "Assembly line balancing (ALB) is used in many industries to minimize the number of stations, improve the efficiency and work load balance among stations. Enhanced Genetic Algorithm (EGA) is proposed using precedence preservative crossover and scramble mutation techniques, aiming to minimize two objectives; number of stations as a primary objective and smoothing index as a secondary objective. Benchmark problems were selected from the literature, used to test the efficacy of the algorithm and to compare the results with the well known algorithm SALOME. The results showed high efficacy while handling two objectives. It outperformed SALOME in work load balance and efficiency. On the other, EGA outperformed the Genetic Algorithm (GA) developed by [1] in minimizing the number of stations.", "corpus_id": 211091773, "venue": "", "year": 2019, "author_names": [ "Shady Magdy Anwar", "Ahmed Mahmoud Ali", "Mohamed Awad" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "115669978", "title": "An improved artificial bee colony algorithm with MaxTF heuristic rule for two sided assembly line balancing problem", "abstract": "Two sided assembly line is usually used for the assembly of large products such as cars, buses, and trucks. With the development of technical progress, the assembly line needs to be reconfigured and the cycle time of the line should be optimized to satisfy the new assembly process. Two sided assembly line balancing with the objective of minimizing the cycle time is called TALBP 2. This paper proposes an improved artificial bee colony (IABC) algorithm with the MaxTF heuristic rule. In the heuristic initialization process, the MaxTF rule defines a new task's priority weight. On the basis of priority weight, the assignment of tasks is reasonable and the quality of an initial solution is high. In the IABC algorithm, two neighborhood strategies are embedded to balance the exploitation and exploration abilities of the algorithm. The employed bees and onlooker bees produce neighboring solutions in different promising regions to accelerate the convergence rate. Furthermore, a well designed random strategy of scout bees is developed to escape local optima. The experimental results demonstrate that the proposed MaxTF rule performs better than other heuristic rules, as it can find the best solution for all the 10 test cases. A comparison of the IABC algorithm and other algorithms proves the effectiveness of the proposed IABC algorithm. The results also denote that the IABC algorithm is efficient and stable in minimizing the cycle time for the TALBP 2, and it can find 20 new best solutions among 25 large sized problem cases.", "corpus_id": 115669978, "venue": "", "year": 2019, "author_names": [ "Xi Duan", "Bo Wu", "Youmin Hu", "Jing-biao Liu", "Jing Xiong" ], "n_citations": 7, "n_key_citations": 0, "score": 0 }, { "doc_id": "208731367", "title": "An effective artificial fish swarm optimization algorithm for two sided assembly line balancing problems", "abstract": "Abstract Two sided assembly lines are often used in assembly of large sized products, such as automobiles, buses and trucks. Compared to the traditional one sided assembly line, two sided assembly line has advantages of shorter line and higher utilization of fixture. However, normal balancing method is not applicable to solve the two sided assembly line balancing problem since the constraint conditions become more complicated. On the other hand, artificial fish swarm algorithm is a relatively new member of swarm intelligence based on swarm behaviors that were inspired from social behaviors of fish swarm in nature. As a typical application of behaviorism in artificial intelligence, artificial fish swarm algorithm can search for the global optimum. So it is a good candidate for developing new search algorithm for solving optimization problems in operational research. In this research, an effective discrete artificial fish swarm algorithm is developed to solve the cost oriented assembly line balancing problems which aims to minimize the construction cost and at the same time minimize the number of mate station. Through extensive computational experiments, the performance of the proposed artificial fish swarm algorithm is examined. The experimental results validate the effectiveness and efficiency of the proposed method.", "corpus_id": 208731367, "venue": "Comput. Ind. Eng.", "year": 2019, "author_names": [ "Yu Guang Zhong", "Zexiao Deng", "Ke Xu" ], "n_citations": 6, "n_key_citations": 0, "score": 1 }, { "doc_id": "126757994", "title": "Recent trend in mixed model assembly line balancing optimization using soft computing approaches", "abstract": "Purpose This paper aims to review and discuss four aspects of mixed model assembly line balancing (MMALB) problem mainly on the optimization angle. MMALB is a non deterministic polynomial time hard problem which requires an effective algorithm for solution. This problem has attracted a number of research fields: manufacturing, mathematics and computer science. Design/methodology/approach This paper review 59 published research works on MMALB from indexed journal. The review includes MMALB problem varieties, optimization algorithm, objective function and constraints in the problem. Findings Based on research trend, this topic is still growing with the highest publication number observed in 2016 and 2017. The review indicated that the future research direction should focus on human factors and sustainable issues in the problem modeling. As the assembly cost becomes crucial, resource utilization in the assembly line should also be considered. Apart from that, the growth of new optimization algorithms is predicted to influence the MMALB optimization, which currently relies on well established algorithms. Originality/value The originality of this paper is on the research trend in MMALB. It provides the future direction for the researchers in this field.", "corpus_id": 126757994, "venue": "Engineering Computations", "year": 2019, "author_names": [ "Muhamad Magffierah Razali", "N H Kamarudin", "Mohd Fadzil Faisae Ab Rashid", "Ahmad Nasser Mohd Rose" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "165076762", "title": "Integrated optimization of mixed model assembly sequence planning and line balancing using Multi objective Discrete Particle Swarm Optimization", "abstract": "Abstract Recently, interest in integrated assembly sequence planning (ASP) and assembly line balancing (ALB) began to pick up because of its numerous benefits, such as the larger search space that leads to better solution quality, reduced error rate in planning, and expedited product time to market. However, existing research is limited to the simple assembly problem that only runs one homogenous product. This paper therefore models and optimizes the integrated mixed model ASP and ALB using Multi objective Discrete Particle Swarm Optimization (MODPSO) concurrently. This is a new variant of the integrated assembly problem. The integrated mixed model ASP and ALB is modeled using task based joint precedence graph. In order to test the performance of MODPSO to optimize the integrated mixed model ASP and ALB, an experiment using a set of 51 test problems with different difficulty levels was conducted. Besides that, MODPSO coefficient tuning was also conducted to identify the best setting so as to optimize the problem. The results from this experiment indicated that the MODPSO algorithm presents a significant improvement in term of solution quality toward Pareto optimal and demonstrates the ability to explore the extreme solutions in the mixed model assembly optimization search space. The originality of this research is on the new variant of integrated ASP and ALB problem. This paper is the first published research to model and optimize the integrated ASP and ALB research for mixed model assembly problem.", "corpus_id": 165076762, "venue": "Artificial Intelligence for Engineering Design, Analysis and Manufacturing", "year": 2019, "author_names": [ "Mohd Fadzil Faisae Ab Rashid", "Ashutosh Tiwari", "Windo Hutabarat" ], "n_citations": 5, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "186207586", "title": "Evolution and comparative genomics of the most common Trichoderma species", "abstract": "BackgroundThe growing importance of the ubiquitous fungal genus Trichoderma (Hypocreales, Ascomycota) requires understanding of its biology and evolution. Many Trichoderma species are used as biofertilizers and biofungicides and T. reesei is the model organism for industrial production of cellulolytic enzymes. In addition, some highly opportunistic species devastate mushroom farms and can become pathogens of humans. A comparative analysis of the first three whole genomes revealed mycoparasitism as the innate feature of Trichoderma. However, the evolution of these traits is not yet understood.ResultsWe selected 12 most commonly occurring Trichoderma species and studied the evolution of their genome sequences. Trichoderma evolved in the time of the Cretaceous Palaeogene extinction event 66 15) mya, but the formation of extant sections (Longibrachiatum, Trichoderma) or clades (Harzianum/Virens) happened in Oligocene. The evolution of the Harzianum clade and section Trichoderma was accompanied by significant gene gain, but the ancestor of section Longibrachiatum experienced rapid gene loss. The highest number of genes gained encoded ankyrins, HET domain proteins and transcription factors. We also identified the Trichoderma core genome, completely curated its annotation, investigated several gene families in detail and compared the results to those of other fungi. Eighty percent of those genes for which a function could be predicted were also found in other fungi, but only 67% of those without a predictable function.ConclusionsOur study presents a time scaled pattern of genome evolution in 12 Trichoderma species from three phylogenetically distant clades/sections and a comprehensive analysis of their genes. The data offer insights in the evolution of a mycoparasite towards a generalist.", "corpus_id": 186207586, "venue": "BMC Genomics", "year": 2019, "author_names": [ "Christian Peter Kubicek", "Andrei Stecca Steindorff", "Komal Chenthamara", "Gelsomina Manganiello", "Bernard Henrissat", "J T Zhang", "Feng Cai", "Alexey G Kopchinskiy", "Eva M Kubicek", "Alan Kuo", "Riccardo Baroncelli", "Sabrina Sarrocco", "Eliane Ferreira Noronha", "Giovanni Vannacci", "Qirong Shen", "Igor V Grigoriev", "Irina S Druzhinina" ], "n_citations": 62, "n_key_citations": 4, "score": 1 }, { "doc_id": "85511986", "title": "Non Volatile Metabolites from Trichoderma spp.", "abstract": "The genus Trichoderma is comprised of many common fungi species that are distributed worldwide across many ecosystems. Trichoderma species are well known producers of secondary metabolites with a variety of biological activities. Their potential use as biocontrol agents has been known for many years. Several reviews about metabolites from Trichoderma have been published. These reviews are based on their structural type, biological activity, or fungal origin. In this review, we summarize the secondary metabolites per Trichoderma species and elaborate on approximately 390 non volatile compounds from 20 known species and various unidentified species.", "corpus_id": 85511986, "venue": "Metabolites", "year": 2019, "author_names": [ "Meng-fei Li", "Guo-hong Li", "Ke-Qin Zhang" ], "n_citations": 28, "n_key_citations": 1, "score": 1 }, { "doc_id": "85450708", "title": "Rapid identification of Trichoderma koningiopsis and Trichoderma longibrachiatum using sequence characterized amplified region markers", "abstract": "Molecular markers enable the detection and classification of fungi isolated from their natural environments. To develop species specific markers for detecting Trichoderma koningiopsis and T. longibrachiatum, the sequence characterized amplified region technique, using 20 inter simple sequence repeat polymerase chain reaction primers, was performed. The two specific markers for amplifying a single unique band consistent with T. koningiopsis and T. longibrachiatum, which were absent with other Trichoderma strains, were successfully identified. These fragments had no meaningful sequence homology with known sequences available in the National Center for Biotechnology Information and TrichOKEY databases. Compared with traditional identification techniques, these markers can facilitate more rapid and less complicated studies of Trichoderma population dynamics and evaluate their establishment after release into agricultural environments.", "corpus_id": 85450708, "venue": "Egyptian Journal of Biological Pest Control", "year": 2019, "author_names": [ "M M Adeyemi Hassan", "Mona A Farid", "Ahmed Gaber" ], "n_citations": 10, "n_key_citations": 1, "score": 0 }, { "doc_id": "195806844", "title": "Endophytic strains of Trichoderma increase plants' photosynthetic capability", "abstract": "The world faces two enormous challenges that can be met, at least in part and at low cost, by making certain changes in agricultural practices. There is need to produce enough food and fibre for a growing population in the face of adverse climatic trends, and to remove greenhouse gases to avert the worst consequences of global climate change. Improving photosynthetic efficiency of crop plants can help meet both challenges. Fortuitously, when crop plants' roots are colonized by certain root endophytic fungi in the genus Trichoderma, this induces up regulation of genes and pigments that improve the plants' photosynthesis. Plants under physiological or environmental stress suffer losses in their photosynthetic capability through damage to photosystems and other cellular processes caused by reactive oxygen species (ROS) But certain Trichoderma strains activate biochemical pathways that reduce ROS to less harmful molecules. This and other mechanisms described here make plants more resistant to biotic and abiotic stresses. The net effect of these fungi's residence in plants is to induce greater shoot and root growth, increasing crop yields, which will raise future food production. Furthermore, if photosynthesis rates are increased, more CO2 will be extracted from the atmosphere, and enhanced plant root growth means that more sequestered C will be transferred to roots and stored in the soil. Reductions in global greenhouse gas levels can be accelerated by giving incentives for climate friendly carbon farming and carbon cap and trade programmes that reward practices transferring carbon from the atmosphere into the soil, also enhancing soil fertility and agricultural production.", "corpus_id": 195806844, "venue": "Journal of applied microbiology", "year": 2019, "author_names": [ "Gary E Harman", "Febri Doni", "Ranjana Khadka", "Norman Uphoff" ], "n_citations": 29, "n_key_citations": 0, "score": 0 }, { "doc_id": "153313421", "title": "Trichoderma as a Model to Study Effector Like Molecules", "abstract": "Plants are capable of perceiving microorganisms by coordinating processes to establish different forms of plant microbe relationships. Plant colonization is governed in fungal and bacterial systems by secreted effector molecules, suppressing plant defense responses and modulating plant physiology to promote either virulence or compatibility. Proteins, secondary metabolites, and small RNAs have been described as effector molecules that use different mechanisms to establish the interaction. Effector molecules have been studied in more detail due to their involvement in harmful interactions, leading to a negative impact on agriculture. Recently, research groups have started to study the effectors in symbiotic interactions. Interestingly, most symbiotic effectors are members of the same families present in phytopathogens. Nevertheless, the quantity and ratio of secreted effectors depends on the microorganism and the host, suggesting a complex mechanism of recognition between the plant and their associated microorganisms. Fungi belonging to Trichoderma genus interact with plants by inducing their defense system and promoting plant growth. Research suggests that some of these effects are associated with effector molecules that Trichoderma delivers during the association with the plant. In this review, we will focus on the main findings concerning the effector molecules reported in Trichoderma spp. and their role during the interaction with plants, mainly in the molecular dialogue that takes place between them.", "corpus_id": 153313421, "venue": "Front. Microbiol.", "year": 2019, "author_names": [ "Claudia A Ramirez-Valdespino", "Sergio Casas-Flores", "Vianey Olmedo-Monfil" ], "n_citations": 37, "n_key_citations": 0, "score": 0 }, { "doc_id": "53244313", "title": "Trichoderma Species: Versatile Plant Symbionts.", "abstract": "Because of the need to provide food for the growing population, agricultural activity is faced with the huge challenge of counteracting the negative effects generated by adverse environmental factors and diseases caused by pathogens on crops, while avoiding environmental pollution due to the excessive use of agrochemicals. The exploitation of biological systems that naturally increase plant vigor, preparing them against biotic and abiotic stressors that also promote their growth and productivity represents a useful and viable strategy to help face these challenges. Fungi from the genus Trichoderma have been widely used in agriculture as biocontrol agents because of their mycoparasitic capacity and ability to improve plant health and protection against phytopathogens, which makes it an excellent plant symbiont. The mechanisms employed by Trichoderma include secretion of effector molecules and secondary metabolites that mediate the beneficial interaction of Trichoderma with plants, providing tolerance to biotic and abiotic stresses. Here we discuss the most recent advances in understanding the mechanisms employed by this opportunistic plant symbiont as biocontrol agent and plant growth promoter. In addition, through genome mining we approached a less explored factor that Trichoderma could be using to become successful plant symbionts, the production of phytohormones auxins, cytokinins, abscisic acid, gibberellins, among others. This approach allowed us to detect sets of genes encoding proteins potentially involved in phytohormone biosynthesis and signaling. We discuss the implications of these findings in the physiology of the fungus and in the establishment of its interaction with plants.", "corpus_id": 53244313, "venue": "Phytopathology", "year": 2019, "author_names": [ "Paulina Guzman-Guzman", "Maria Daniela Porras-Troncoso", "Vianey Olmedo-Monfil", "Alfredo Herrera-Estrella" ], "n_citations": 66, "n_key_citations": 0, "score": 0 }, { "doc_id": "197525144", "title": "Trichoderma: A part of possible answer towards crop residue disposal", "abstract": "India is one of the leading countries in agricultural production and generate large volume of crop residue. Increasing demand for food grains due to growing population leads to generation of crop residues. Due to lack of proper disposal mechanism of crop residue, farmers burn the residue which release greenhouse gases (GHGs) into the atmosphere, and poses great threat to environment as well as human health. The residue burning causes greater carbon emission and nutrient losses which otherwise incorporated into the soil system may substantially improve the soil biodiversity. Besides several practices of crop residue management, the most feasible method for farmers is incorporation of residue into the soil with the inoculation of microbes. In soil system the ability of microbial community in degrading organic substances is well known. In the early stages of residue decomposition simple substrates like carbohydrates are degraded by bacteria, but in later stages degradation of complex constituents viz. cellulose, lignin needs microbes which are capable of secreting enzymes like cellulase, acting on complex organic substrates. In this context, cellulolytic micro organisms like Trichoderma have the potential and emerging as an important microbial inoculants to enhance the rate of decomposition as well as alleviate the effect of residue burning.", "corpus_id": 197525144, "venue": "Journal of Applied and Natural Science", "year": 2019, "author_names": [ "Siva Devika O", "Subhadip Paul", "Deepranjan Sarkar", "Rahul Singh Rajput", "Sonam Singh", "Manoj Parihar", "Hanuman Prasad Parewa", "H Birkumar Singh", "Amitava Rakshit" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "145856171", "title": "Bioactive Volatile Metabolites of Trichoderma: An overview", "abstract": "Root associated beneficial microbes are potential eco friendly tool and play important role in triggering plant performance against biotic and abiotic stresses. In comparison to chemical based practices, the fungi such as Trichoderma which are also explored as biocontrol agents are promising and sustainable solution for managing plant diseases. The molecular arsenal of these biocontrol attributes including secretion of volatile and nonvolatile compounds which either alone or in combination with other metabolites is responsible for inhibiting phytopathogens and promoting health of the associated host. Till date, a number of volatile organic compounds (VOCs) of diverse chemical nature have been characterized from Trichoderma spp. These metabolites of Trichoderma are of vital importance in agricultural, food, and pharmaceutical applications. The VOCs of compounds are known to play diverse functions both in above and underground part of an ecosystem. The widely recognized molecular role of VOCs includes mediators of inter colony communication, warning signals, pest management, and nutrient acquisitions through root architecture adjustment. The volatile bioactive metabolites such as 6 pentyl a pyrone are known to exhibit multiple actions such as inhibiting growth of fungal mycelium, spore germination, and pigmentation of plant pathogenic fungi. Here, an attempt has been made to discuss bioactive volatile metabolites of Trichoderma origin and their role in combating both biotic and abiotic stress responses of host plants.", "corpus_id": 145856171, "venue": "", "year": 2019, "author_names": [ "Richa Salwan", "Nidhi Rialch", "Vivek Sharma" ], "n_citations": 14, "n_key_citations": 1, "score": 1 }, { "doc_id": "58949245", "title": "Trichoderma Histone Deacetylase HDA 2 Modulates Multiple Responses in Arabidopsis1", "abstract": "HDA 2 histone deacetylase plays a pivotal role in the symbiont fungus Trichoderma atroviride by modulating multiple responses to establish a symbiotic relationship. Trichoderma spp. are a rich source of secondary metabolites and volatile organic compounds (VOCs) which may induce plant defenses and modulate plant growth. In filamentous fungi, chromatin modifications regulate secondary metabolism. In this study we investigated how the absence of histone deacetylase HDA 2 in the Trichoderma atroviride strain Dhda 2 impacts its effect on a host, Arabidopsis (Arabidopsis thaliana) The production of VOCs and their impact on plant growth and development were assessed as well. The Dhda 2 strain was impaired in its ability to colonize Arabidopsis roots, thus affecting the promotion of plant growth and modulation of plant defenses against foliar pathogens Botrytis cinerea and Pseudomonas syringae, which normally result from interaction with T. atroviride. Furthermore, Dhda 2 VOCs were incapable of triggering plant defenses to counterattack foliar pathogens. The Dhda 2 overproduced the VOC 6 pentyl 2H pyran 2 one (6 PP) which resulted in enhanced root branching and differentially regulated phytohormone related genes. Analysis of ten VOCs (including 6 PP) revealed that three of them positively regulated plant growth, whereas six had the opposite effect. Assessment of secondary metabolites, detoxification, and communication with plant related genes showed a dual role for HDA 2 in T. atroviride gene expression regulation during its interaction with plants. Chromatin immunoprecipitation of acetylated histone H3 on the promoters of plant responsive genes in Dhda 2 showed, in the presence of Arabidopsis, low levels of epl 1 and abc 2 compared with that in the wild type; whereas ctf 1 presented high constitutive levels, supporting a dual role of HDA 2 in gene regulation. This work highlights the importance of HDA 2 as a global regulator in Trichoderma to modulate multiple responses in Arabidopsis.", "corpus_id": 58949245, "venue": "Plant Physiology", "year": 2019, "author_names": [ "Magnolia Estrada-Rivera", "Oscar Guillermo Rebolledo-Prudencio", "Doris Arisbeth Perez-Robles", "Ma Del Carmen Rocha-Medina", "Maria Del Carmen Gonzalez-Lopez", "Sergio Casas-Flores" ], "n_citations": 18, "n_key_citations": 0, "score": 0 }, { "doc_id": "133606989", "title": "Trichoderma Species Differ in Their Volatile Profiles and in Antagonism Toward Ectomycorrhiza Laccaria bicolor", "abstract": "Fungi of the genus Trichoderma are economically important due to their plant growth and performance promoting effects, such as improved nutrient supply, mycoparasitism of plant pathogens and priming of plant defense. Due to their mycotrophic lifestyle, however, they might also be antagonistic to other plant beneficial fungi, such as mycorrhiza forming species. Trichoderma spp. release a high diversity of volatile organic compounds (VOCs) which likely play a decisive role in the inter species communication. It has been shown that Trichoderma VOCs can inhibit growth of some plant pathogens, but their inhibition potentials during early interactions with mutualistic fungi remain unknown. Laccaria bicolor is a common ectomycorrhizal fungus which in symbiotic relationship is well known to facilitate plant performance. Here, we investigated the VOC profiles of three strains of Trichoderma species, Trichoderma harzianum, Trichoderma Hamatum, and Trichoderma velutinum, as well as L. bicolor by stir bar sorptive extraction and gas chromatography mass spectrometry (SBSE GC MS) We further examined the fungal performance and the VOC emission profiles during confrontation of the Trichoderma species with L. bicolor in different co cultivation scenarios. The VOC profiles of the three Trichoderma species were highly species dependent. T. harzianum was the strongest VOC emitter with the most diverse compound pattern, followed by T. hamatum and T. velutinum. Co cultivation of Trichoderma spp. and L. bicolor altered the VOC emission patterns dramatically in some scenarios. The co cultivations also revealed contact degree dependent inhibition of one of the fungal partners. Trichoderma growth was at least partially inhibited when sharing the same headspace with L. bicolor. In direct contact between both mycelia, however, L. bicolor growth was impaired, indicating that Trichoderma and L. bicolor apply different effectors when defending their territory. Multivariate analysis demonstrated that all examined individual fungal species in axenic cultures, as well as their co cultivations were characterized by a distinct VOC emission pattern. The results underline the importance of VOCs in fungal interactions and reveal unexpected adjustability of the VOC emissions according to the specific biotic environments.", "corpus_id": 133606989, "venue": "Front. Microbiol.", "year": 2019, "author_names": [ "Yuan Guo", "Andrea Ghirardo", "Baris Weber", "Jorg-Peter Schnitzler", "J Philipp Benz", "Maaria Rosenkranz" ], "n_citations": 24, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "107934680", "title": "Analysis of the macroeconomic impact of the CSF on the economy of East Germany research project supported under EU contract EFRE No. 98.02.17002 Development of a model for assessing the macroeconomic impacts of structural funds in East Germany", "abstract": "The authors' main objective in this project was to study the options available to East Germany as it faces into the need to design policies that will take it from the immediate post transition situation towards the EU average standard of living. After the initial transition, East Germany had a relative standard of living roughly comparable to that of the EU cohesion countries immediately prior to their entry into the EU. To reach the EU average, it must, therefore, grow for a sustained period at a rate higher than the EU average, or become permanently dependent on subvention from the former West Germany. Our modelling activities are designed to provide tools to facilitate an exploration of the options and likely outcomes.", "corpus_id": 107934680, "venue": "", "year": 2001, "author_names": [ "John Bradley", "Edgar Morgenroth", "Gerhard Untiedt" ], "n_citations": 9, "n_key_citations": 0, "score": 1 }, { "doc_id": "153076797", "title": "The Feed Livestock Economy of East Germany: Prospects to 1980", "abstract": "", "corpus_id": 153076797, "venue": "", "year": 1975, "author_names": [ "Thomas A Vankai" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "159256940", "title": "Between East and West? East Germany's Employment System in a Dynamic Comparison", "abstract": "This article investigates how working conditions in East Germany differ from those in West Germany as well as from those among its Central and Eastern European (CEE) neighbors (Czech Republic, Hungary, and Poland) Building on repeated International Social Survey Programme (ISSP) survey data (1989, 1997, 2005, and 2015) the author compares key elements of East Germany's employment system with West Germany and its CEE neighbors over time. The results show that, initially, East Germany's conditions resembled a logic reflecting the need for economic survival that was distinct from West Germany and from the emerging general patterns of its CEE neighbors. By 2015, East and West German working conditions nearly converge. This article develops and extends the employment system approach to address situations of transformation and substantial institutional change, and contributes to the ongoing debate on regional diversity in Germany's economy.", "corpus_id": 159256940, "venue": "ILR Review", "year": 2019, "author_names": [ "Stefan Kirchner" ], "n_citations": 2, "n_key_citations": 0, "score": 3 }, { "doc_id": "14979809", "title": "The Curse and Blessing of Training the Unemployed in a Changing Economy: The Case of East Germany After Unification", "abstract": "Abstract We analyse the effects of government sponsored training for the unemployed conducted during East German transition. For the microeconometric analysis, we use a new, large and informative administrative database that allows us to use matching methods to address potential selection bias, to study different types of programmes and to observe labour market outcomes over eight years. We find strong evidence that, on average, the training programmes under investigation increase long term employment prospects and earnings. However, as an important exception, the longer training programmes are not helpful for their male participants. At least part of the explanation for this negative result is that caseworkers severely misjudged the structure of the future demand for skills.", "corpus_id": 14979809, "venue": "", "year": 2005, "author_names": [ "M Lechner", "Ruth Miquel", "Conny Wunsch" ], "n_citations": 214, "n_key_citations": 11, "score": 1 }, { "doc_id": "133408353", "title": "Analysing the impact of the CSF on an EU regional economy: The case of East Germany", "abstract": "", "corpus_id": 133408353, "venue": "", "year": 2000, "author_names": [ "John Bradley", "Edgar Morgenroth", "Gerhard Untiedt" ], "n_citations": 7, "n_key_citations": 2, "score": 0 }, { "doc_id": "168815795", "title": "East Germany: Integration to a Well Established Environment", "abstract": "This chapter deals with the role of private landlords in East Germany since 1949. In the German Democratic Republic, the private landlord's economic life was made very difficult by the state, and their market share gradually declined. With the German reunification, complex questions about integrating the former socialist housing industry into a market economy were raised, including property rights, rent adaptation, and modernisation of the housing stock. Integration into the new economic order did not proceed without frictions. The interplay of hefty subsidies and a shrinking population has led to a huge excess of housing and economic difficulties. On the other hand, the private landlords were able to significantly increase their market share after 1990 due to restitutions and new residential development.", "corpus_id": 168815795, "venue": "", "year": 2018, "author_names": [ "Stefan Kofner" ], "n_citations": 1, "n_key_citations": 0, "score": 2 }, { "doc_id": "158984911", "title": "Trust Law in the Process of Reunifying East and West Germany How a legal concept foreign to German law was the solution to merge a socialist and a capitalist economy between 1989 and the present", "abstract": "In the run up to the Re Unification of the East and West Germany in the 1990's the governments faced a problem, how do we integrate two political systems without causing a collapse of the economy and livelihoods. In order to counter the aforementioned the East German government initiated the Treuhandanstalt, a piece of legislation that would govern over State Owned Enterprises in order to ready them for either investors to take over or for liquidation. In so doing the similarities between the Anglo Saxon Trust and the Germanic Treuhand is of extreme interest, namely; in what manner did the German government design the Treuhandanstalt? Was it focussed on the Germanic tradition, of does it draw heavily from the common law trust? This paper focusses on the similarities and differences between the two concepts of ownership.", "corpus_id": 158984911, "venue": "", "year": 2018, "author_names": [ "Tim A Beijer" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "153518249", "title": "The G.D.R: The history, politics, economy, and society of East Germany", "abstract": "", "corpus_id": 153518249, "venue": "", "year": 1978, "author_names": [ "Eberhard Schneider" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "152490392", "title": "The quest for freedom and stability political choices and the economic transformation of East Germany 1989 1991", "abstract": "The economic transformation of the East German economy initiated in 1990 and its socioeconomic consequences remain to the present day one of the most controversial topics in assessing the key decisions that led to German reunification. The fact that East Germany underwent the most dramatic depression in German economic history1 has had a long lasting impact not only on the economic and fiscal development in Germany as a whole but also on the political psyche, especially in East Germany. For East Germans, the short term economic consequences of reunification were the opposite of what they had been hoping for when the pace to unification was accelerated in early 1990. Those hopes were not only the results of illusions and ignorance as far as the economic mechanisms of capitalism were concerned.2 They had been nurtured as well by the promises made by West German politicians seeking the support of the East German electorate in the politically pivotal year of 1990, with the first free elections in the German Democratic Republic (GDR) of March 18 and the first all German elections of December 2.", "corpus_id": 152490392, "venue": "", "year": 2011, "author_names": [ "Wolfgang Seibel" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "156067117", "title": "East German Productivity And The Transition To The Market Economy Comparisons With West Germany And Northern Ireland", "abstract": "Thank you for reading east german productivity and the transition to the market economy comparisons with west germany and northern ireland. Maybe you have knowledge that, people have search hundreds times for their chosen readings like this east german productivity and the transition to the market economy comparisons with west germany and northern ireland, but end up in harmful downloads. Rather than reading a good book with a cup of coffee in the afternoon, instead they cope with some infectious virus inside their desktop computer.", "corpus_id": 156067117, "venue": "", "year": 2016, "author_names": [ "Jessika Weiss" ], "n_citations": 2, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "219810872", "title": "Methane propane hydrate formation and memory effect study with a reaction kinetics model", "abstract": "Although natural gas hydrates and hydrate exploration have been extensively studied for decades, the reaction kinetics and nucleation mechanism of hydrate formation is not fully understood. In its early stage, gas hydrate formation can be assumed to be an autocatalytic kinetic reaction with nucleation and initial growth. In this work, a reaction kinetics model has been established to form structure II methane propane hydrate in an isochoric reactor. The computational model consists of six pseudo elementary reactions for three dynamic processes: (1) gas dissolution into the bulk liquid, (2) a slow buildup of hydrate precursors for nucleation onset, and (3) rapid and autocatalytic hydrate growth after onset. The model was programmed using FORTRAN, with initiating parameters and rate constants that were derived or obtained from data fitted using experimental results. The simulations indicate that the length of nucleation induction is determined largely by an accumulation of oligomeric hydrate precursors up to a threshold value. The slow accumulation of precursors is the rate limiting step for the overall hydrate formation, and its conversion into hydrate particles is critical for the rapid, autocatalytic reaction. By applying this model, the memory effect for hydrate nucleation was studied by assigning varied initial amounts of precursor or hydrate species in the simulations. The presence of pre existing precursors or hydrate particles could facilitate the nucleation stage with a reduced induction time, and without affecting hydrate growth. The computational model with the performed simulations provides insight into the reaction kinetics and nucleation mechanism of hydrate formation.", "corpus_id": 219810872, "venue": "", "year": 2020, "author_names": [ "Wei Ke", "Guangjin Chen", "Daoyi Chen" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "96876568", "title": "Reaction rate constant of propane hydrate formation", "abstract": "Experimental data on the rate of formation of propane hydrates were obtained using a particle size analyzer capable of detecting particles with diameters as small as 0.6 nm, while operating in a closed loop system. Experiments were carried out at temperatures around 274 K and pressures between 315 and 340 kPa in a semi batch stirred tank crystallizer. The experimental data were analyzed using a newly developed kinetic model based on crystallization theory and as a result, the actual reaction rate constant for propane hydrate formation was successfully determined. A value of 2.15 x 10 7 m/s is reported at 274.2 K, while it was found that the dissolution rate of propane at the vapor liquid water interface was enhanced by a factor of five during the growth stage, compared to the value obtained during typical solubility experiments.", "corpus_id": 96876568, "venue": "", "year": 2008, "author_names": [ "Sebastien Bergeron", "Phillip Servio" ], "n_citations": 39, "n_key_citations": 2, "score": 3 }, { "doc_id": "235772376", "title": "Kinetic study of the effect of amino acids on methane (95% propane (5% hydrate formation", "abstract": "The motivation for this study is the potential of environmental friendly amino acids such as alanine, histidine, phenylalanine and valine to be examined as inhibitors on methane (95% propane (5% hydrate formation together with the hydrodynamic examination of three different flows in hydrate formation process. The outcomes indicated that valine and alanine behave as promoters while histidine and phenylalanine behave as inhibitors. From hydrodynamic perception radial flow shows less induction time values and better rate of hydrate formation due to better gas liquid contact compared to mixed flow experiments.", "corpus_id": 235772376, "venue": "Reaction Kinetics, Mechanisms and Catalysis", "year": 2021, "author_names": [ "Sotirios Nik Longinos", "Mahmut Parlaktuna" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "234830578", "title": "Comparison of emission concentrations during the combustion of a double hydrate propane methane at different temperatures in a muffle furnace", "abstract": "In recent years, more and more attention in the world has been paid to the development of environmentally friendly technology for combustion gas hydrates. In this work, experimental studies of the combustion of a propane methane double gas hydrate at different temperatures in a muffle furnace of 650 degC and 950 degC were performed. The increase in temperature in the muffle furnace allowed to reduce harmful emissions and reduce fuel loss. With increasing temperature, the CO concentration decreases by 2.2 2.5 times, CO2 from 7 8% to 3 4% and NOX changes by 1.2 1.5 times, which is associated with an increase in the reaction rate. Emissions of NOX gases during combustion of coal water suspensions are many times higher than the obtained values of NOX concentrations of methane propane gas hydrates.", "corpus_id": 234830578, "venue": "", "year": 2021, "author_names": [ "Vladimir S Morozov" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "123974172", "title": "Study on Pressure Turbulence for Growth Process Promotion of Propane Hydrate", "abstract": "In order to acquire fast formation method of gas hydrate,visual experiments of propane hydrate formation have been carried out to study the influence of pressure turbulence on growth process promotion and formation parameters including layer thickness,growth rate and driving force have been analyzed with driving force calculation in formation process.The results show that,after35 hours' suspension,hydrate reaction restarts when the pressure was increased to the initial pressure,0.1 MPa higher than that before turbulence,and thickness at gas liquid interface linearly increases at the rate of 0.5 mm/h in first two hours and sharply decreases subsequently,and average growth rate is 0.04 mm/h in 175 hours after turbulence.", "corpus_id": 123974172, "venue": "", "year": 2014, "author_names": [ "Li Xia Jin" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "10134204", "title": "Propane Clathrate Hydrate Formation Accelerated by Methanol.", "abstract": "The role of methanol as both an inhibitor and a catalyst for the formation of clathrate hydrates (CHs) has been a topic of intense study. We report a new quantitative study of the kinetics of propane CH formation at 253 K from the reaction of propane gas with <75 mm ice particles that have been doped with varying amounts of methanol. We find that methanol significantly accelerates the formation reaction with quite small doping quantities. Even for only 1 methanol molecule per 10 000 water molecules, the maximum uptake rate of propane into CHs is enhanced and the initiation pressure is reduced. These results enable more efficient production of CHs for gas storage. This remarkable acceleration of the CH formation reaction by small quantities of methanol may place constraints on the mechanism of the inhibition effect observed under other conditions, usually employing much larger quantities of methanol.", "corpus_id": 10134204, "venue": "The journal of physical chemistry letters", "year": 2016, "author_names": [ "Jaruwan Amtawong", "Jin Guo", "Jared S Hale", "Suvrajit Sengupta", "Everly B Fleischer", "Rachel W Martin", "Kenneth C Janda" ], "n_citations": 13, "n_key_citations": 0, "score": 1 }, { "doc_id": "93330696", "title": "The Effect of Pressure Disturbance on the Formation Process of Propane Hydrate", "abstract": "In order to speed up the formation process of gas hydrate, we investigated the effect of pressure disturbance in the static formation process of propane hydrate in visual reaction cell. The results indicate that, compared with the process of no pressure disturbance, pressure disturbance could promote the formation process of propane hydrate effectively in 100 hours of the experimental process, improving the growth rate of propane hydrate. The average growth rate of propane hydrate reached the degree of 0.0526mm/h, it is 4 times as great as that of no pressure disturbance.", "corpus_id": 93330696, "venue": "", "year": 2012, "author_names": [ "Xue Min Zhang", "Jinping Li", "Linjun Wang", "Liang Jiao" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "229436196", "title": "Numerical Simulation of a Laboratory scale Experiment for the Hydrate Dissociation Process in Porous Media by Acid Injection", "abstract": "In this study, to enhance gas recovery from a methane hydrate reservoir, experimental and numerical studies that considered the acid injection process as a secondary gas recovery process after the depressurization operation were conducted. First, we experimentally analyzed the dissociation behavior of propane hydrate (PGH) in porous media by using acid injection and confirmed that the dissociation condition of PGH was shifted to the sides of low temperature and high pressure. This enabled the dissociation to proceed easily as the concentration of the injected acid increased. Then, on the basis of experimental observation, we conducted history matching for the temperature change and gas production behavior during PGH dissociation by acid injection, by varying the initial hydrate saturation, the reaction rate constant for acid consumption, and the intrinsic dissociation rate constant as the calculation parameters. Through history matching, we confirmed the validity of the developed numerical model targeting the dissociation of hydrates in porous media by acid injection.", "corpus_id": 229436196, "venue": "", "year": 2020, "author_names": [ "Yasuhide Sakamoto", "Yusuke Nakano", "Fuyuki Kaneko", "Kengo Nakamura", "Takeshi Komai" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "100941125", "title": "Ice Particle Size and Temperature Dependence of the Kinetics of Propane Clathrate Hydrate Formation", "abstract": "The effects of ice particle size and temperature on the conversion rate of ice to propane clathrate hydrate are presented in this work. Results from this study are interpreted in terms of the three stage shrinking core model: stage I, initiation of the water and propane enclathration reaction at the surface of the ice particles; stage II, mass transfer through pores on the outer clathrate hydrate shell; and stage III, diffusion of propane molecules through the hydrate layer surrounding the inner core of ice. For the smaller ice particles studied, the initial growth rate and total percent conversion are both higher than for larger particles due to a higher surface to volume ratio. Surprisingly, the peak conversion rate of propane clathrate hydrate increases with decreasing temperatures over the temperature range studied in this work, while the total percent conversion increases for higher temperatures, most likely due to improved mass transfer and diffusion in the later stages of the reaction. For the smal.", "corpus_id": 100941125, "venue": "", "year": 2012, "author_names": [ "Joel J Rivera", "Kenneth C Janda" ], "n_citations": 18, "n_key_citations": 0, "score": 2 }, { "doc_id": "102180079", "title": "Experimental Simulation on Dissociation Behavior of Propane Hydrate by Methanol Glycol Solution Injection", "abstract": "The characteristics of propane hydrate dissociation by methanol injection(mass fraction of 30.0%,60.1%,80.2%,99.5% were investigated using a self made visual equipment.The results indicate that the liquid temperature decreased slowly and the pressure in the reactors grew linearly when the dissociation reaction began,moreover,the dissociation time decrease with the methanol concentration's increase,but the degree of decrease became weaker.The average dissociation rates are 0.020 59~0.045 35 mol/(min*L),and increase linearly with the concentration of methanol solution.Compared with pure water injection,methanol injection reduces dissociation heat of gas hydrate and accelerates gas hydrate dissociation rate.The enhancement of concentration of methanol is benefit to promote dissociation of hydrate.", "corpus_id": 102180079, "venue": "", "year": 2009, "author_names": [ "Liang Deqing" ], "n_citations": 3, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "225732710", "title": "Taming the Hydra: Funding the Lithium Ion Supply Chain in an Era of Unprecedented Volatility", "abstract": "The lithium ion supply chain is set to grow in both size and importance over the coming decade due to government led efforts to decarbonize economies and declining costs of lithium ion batteries used in electronics and transportation. With forecasts of demand for lithium chemicals alone forecast to grow by three times later this decade, at least $10B USD is needed to flow into the upstream supply chain to ensure an efficient and timely build out. Significant additional capital is needed for other portions of the supply chain such as other raw materials, cathode or anode production, and battery cell manufacturing. Recent exogenous shocks such as the US China trade war and coronavirus disease 2019 (COVID 19) pandemic have made securing adequate capital for the supply chain a difficult challenge. Without the steady stream of funding for new mine and chemical conversion capacity, widespread adoption of electric vehicles (EVs) could be put at risk. This paper discusses the current structure of the lithium ion supply chain with a focus on raw material production and the need for and challenges associated with securing adequate capital in an industry that has, to date, not experienced such a robust growth profile.", "corpus_id": 225732710, "venue": "", "year": 2020, "author_names": [ "Chris Berry" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "209440500", "title": "The adoption of Internet of Things in a Circular Supply Chain framework for the recovery of WEEE: The case of Lithium ion electric vehicle battery packs.", "abstract": "The rapid growth in the sales of electric and electronic devices over recent decades is generating worldwide concern about the management of Waste Electrical and Electronic Equipment (WEEE) New methodologies to extend the useful life of products have long been sought, accelerating the shift from a linear to a Circular Economy (CE) When products reach the End of Life (EoL) stage, the Reverse Supply Chain (RSC) is responsible for managing operations, with greater efforts being needed to improve the associated information infrastructure. In fact, this has become increasingly feasible due to the emergence of a new digital revolution led by the Internet of Things (IoT) To shed light on this matter, we propose the Circular Supply Chain (CSC) framework for EoL management aimed at satisfying the information infrastructure requirements in a particular scenario for the recovery of Electric Vehicle Battery (EVB) packs. We present a qualitative evaluation of the CSC information requirements, and the capabilities of IoT to satisfy them. As a result, a heterogeneous IoT network deployment is proposed in pursuit of a digital CSC information infrastructure.", "corpus_id": 209440500, "venue": "Waste management", "year": 2019, "author_names": [ "Celia Garrido-Hidalgo", "F Javier Ramirez", "Teresa Olivares", "Luis Roda-Sanchez" ], "n_citations": 25, "n_key_citations": 1, "score": 1 }, { "doc_id": "234633841", "title": "Operation, Manufacturing, and Supply Chain of Lithium ion Batteries for Electric Vehicles", "abstract": "", "corpus_id": 234633841, "venue": "", "year": 2020, "author_names": [ "Ilias Belharouak", "Jagjit Nanda", "Ethan C Self", "William Blake Hawley", "David L Wood III", "Zhijia Du", "Jianling Li", "Ronald L Graves" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "210639083", "title": "Supply risks of lithium ion battery materials: An entire supply chain estimation", "abstract": "Abstract Lithium ion batteries, as the essential technology for global energy transition, require the combined support of several metallic resources and the complicated supply chains that follow. The risk of supply disruptions to these resources has been widely observed and measured. However, system boundaries of previous studies were conventionally limited to the mine stage. Possible supply risks inherent in the downstream processing stages were not adequately taken into account. To fill this gap, we generalize the idea of supply risk to the whole supply chain to describe the comprehensive threats for the steady consumption of lithium ion batteries. Based on such concept, this study assesses the risks of the lithium ion battery related materials in the three major stages of the entire supply chain: mining, refining and manufacturing. Results indicate that lithium and cobalt are the most critical materials for lithium ion battery industry. Risks hidden in the downstream stages of nickel and manganese should also not be overlooked. We further argue that for important energy related materials with complicated supply chains, the risks should be identified and safeguarded comprehensively throughout the entire supply chain. Such work calls for further database establishment and analysis.", "corpus_id": 210639083, "venue": "", "year": 2019, "author_names": [ "Xin Sun", "Han Hao", "P Hartmann", "Zongwei Liu", "Fuquan Zhao" ], "n_citations": 13, "n_key_citations": 0, "score": 1 }, { "doc_id": "170058191", "title": "Assessment of social sustainability hotspots in the supply chain of lithium ion batteries", "abstract": "Abstract Lithium ion batteries are considered a key component in mobile and stationary energy storage applications. However, the current technology is based on several critical materials, such as lithium, cobalt, nickel, manganese, and graphite, which are associated with various environmental and social impacts in their supply chain. While the environmental impacts of lithium ion batteries have been investigated in numerous studies, little attention has been given to the potential social impacts. Therefore, an assessment of the social sustainability hotspots of lithium ion batteries is carried out. The assessment is based on a spatially differentiated resource flow model of the supply chain. Data on social risks with respect to child labor, corruption, occupational toxics and hazards, and poverty are extracted from the Social Hotspots Database in openLCA. The results of the social assessment are discussed along with environmental and economic considerations to generate recommendations for improving supply chain sustainability.", "corpus_id": 170058191, "venue": "", "year": 2019, "author_names": [ "Christian Thies", "Karsten Kieckhafer", "Thomas Stefan Spengler", "Manbir S Sodhi" ], "n_citations": 10, "n_key_citations": 0, "score": 1 }, { "doc_id": "210999551", "title": "Life cycle environmental and economic assessment of electric vehicle lithium ion batteries using different recycling methods in a closed loop supply chain", "abstract": "With growing adoption of the electric vehicles and their lithium ion batteries (LIBs) increasing urgency has arisen in searching for an environmentally friendly and commercially profitable LIB recycling process, and closed loop recycling has been proved more applicably promising than open loop recycling as for less virgin material demand. Therefore, this paper addresses environmental influence (carbon emissions and water consumption) and economic impact in closed loop supply chain. Life cycle model and process based cost model are employed to quantify differences among three recycling methods (pyrometallurgical, hydrometallurgical and direct physical recycling processes) for LIBs in aspect of five cathode technologies: three types of lithium nickel manganese cobalt oxide (NCM111, NCM622 and NCM811) lithium nickel cobalt aluminum oxide and lithium iron phosphate (LFP) Considering the deficiencies of existing studies, we assess the life cycle environmental impact of LIBs at not only the national level but also the provincial level due to the provincial electricity mix disparity in China. Results demonstrates that direct physical recycling process (DPRP) has the lower environmental burdens and higher economic feasibility over the other methods, excluding LFP cells in which mitigated carbon emissions and higher economic viability are observed but meanwhile direct recycling process water consumption increases. Surprisingly, the majority of high emission provinces that have relatively higher proportion of thermoelectricity are classified as low water consumption areas. Other contradictory outcome also indicates that the three objectives (carbon emission reduction, water consumption reduction and economic development) may not meet simultaneously, which appeals for further comprehensive research on these policy making related indicators.", "corpus_id": 210999551, "venue": "", "year": 2019, "author_names": [ "Meihan Yu", "Siqin Xiong", "Xiaoming Ma" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "73647268", "title": "Lithium Ion Battery Supply Chain Considerations: Analysis of Potential Bottlenecks in Critical Metals", "abstract": "Summary Sustained growth in lithium ion battery (LIB) demand within the transportation sector (and the electricity sector) motivates detailed investigations of whether future raw materials supply will reconcile with resulting material requirements for these batteries. We track the metal content associated with compounds used in LIBs. We find that most of the key constituents, including manganese, nickel, and natural graphite, have sufficient supply to meet the anticipated increase in demand for LIBs. There may be challenges in rapidly scaling the use of materials associated with lithium and cobalt in the short term. Due to long battery lifetimes and multiple end uses, recycling is unlikely to provide significant short term supply. There are risks associated with the geopolitical concentrations of these elements, particularly for cobalt. The lessons revealed in this work can be relevant to other industries in which the rapid growth of a materials dependent technology disrupts the global supply of those materials.", "corpus_id": 73647268, "venue": "", "year": 2017, "author_names": [ "Elsa A Olivetti", "Gerbrand Ceder", "Gabrielle G Gaustad", "Xinkai Fu" ], "n_citations": 440, "n_key_citations": 7, "score": 2 }, { "doc_id": "203515765", "title": "Supply Chain of Raw Materials Used in the Manufacturing of Light Duty Vehicle Lithium Ion Batteries", "abstract": "", "corpus_id": 203515765, "venue": "", "year": 2019, "author_names": [ "Tsisilile A Igogo", "Debra Sandor", "Ahmad Mayyas", "Jill Engel-Cox" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "199559179", "title": "Lithium Ion Battery Supply Chain:Enabling National Electric Vehicle and Renewables Targets", "abstract": "Energy storage will play an important role in the Government of India's efforts to meet the ambitious targets with regards to electric mobility and renewable energy. Among the different types of storage technologies, lithium ion battery (LIB) is considered to be the best suited for electric vehicles (EVs) LIBs can also address intermittency problems in renewable energy integration with the grid. It is estimated that 13.8 GWh of battery capacity is required by 2020 for the EV sector and 15 GWh battery capacity is needed for grid storage requirements. Indigenization of LIB manufacturing can help to meet this large scale demand. Moreover, indigenization has the potential to bring down the cost of a battery. One of the key components in manufacturing LIBs is lithium (as raw material) which needs to be imported as India does not have sufficient reserves. Therefore it is important to estimate the total amount of lithium required for fulfilling the domestic demand. To set up indigenous manufacturing facilities, it is important to identify the key players in the global supply chain of the LIB industry and formulate policies that enable the success of this industry in India. This study presents a review of a complete supply chain related to manufacturing LIBs, along with policy instruments to support the domestic battery demand and supply ecosystem.", "corpus_id": 199559179, "venue": "", "year": 2018, "author_names": [ "Epica Mandal Sarkar", "Tanmay Sarkar", "Mridula Dixit Bharadwaj" ], "n_citations": 9, "n_key_citations": 0, "score": 0 }, { "doc_id": "169295923", "title": "Mapping of Inbound Flows in Supply Chain of Lithium ion Industry in Indonesia", "abstract": "The demand for lithium battery is currently high from the consumer side due to the widespread application of lithiumion battery for electronics (laptops, notebooks, mobile phones, street lighting) and electric vehicles (electric cars and electric motors) In Indonesia, the research and industrialization on lithium ion battery have been conducted to develop products such as for electric vehicles and street lighting. On the other hand, the relationship between suppliers, producers, distribution channels, and consumers has not been mapped. This mapping is intended to provide an overview of the strength of suppliers, involved manufacturers, and to determine the readiness of the value chain of lithium ion battery to perform mass production. The approach in the mapping uses primary data and secondary data for the initial stage of inbound flows in supply chain of lithium ion industry in Indonesia. Primary data are obtained from the questionnaires, which adopted from the value chain lithium ion battery research in USA adjusted for Indonesian context. Meanwhile, the secondary data derived from literature reviews. The respondents in the study are 11 institutions consisting of manufacturers and R&D of lithium ion battery in Indonesia. The results obtained are supplier mapping that provides the flow of lithium ion battery, cell, module, and pack as well as the producers and consumers. The results could also be utilized to identify the valuable metrics in the supply chain of lithium battery industry.", "corpus_id": 169295923, "venue": "", "year": 2018, "author_names": [ "Wahyudi Sutopo", "Roni Zakaria", "Ari Wardayanti", "Fakhrina Fahma" ], "n_citations": 1, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "135936541", "title": "Effects of Package Warpage on Head in Pillow Defect", "abstract": "Head in pillow (HiP) is a BGA defect which happens when solder balls and paste can't contact well during reflow soldering. Package warpage was one of the major reasons for HiP formation. In this paper, package warpage was measured and simulated. It was found that the package warpage was sensitive to the thickness of inside chips. A FEM method considering viscoelastic property of mold compound was introduced to simulate package warpage. The CTE mismatch was found contributes to more than 90% of the package warpage value when reflowing at the peak temperature. A method was introduced to measure the warpage threshold, which is the smallest warpage value that may lead to HiP. The results in different atmospheres showed that the warpage threshold was 50 mm larger in N2 than that in air, suggesting that under N2 atmosphere the process window for HiP defects was larger than that under air, which agreed with the experiments. [doi:10.2320/matertrans.MI201404]", "corpus_id": 135936541, "venue": "", "year": 2015, "author_names": [ "Zhenyu Zhao", "Chuan Chen", "Changyoung Park", "Yuming Wang", "Li-Zhi Liu", "Guisheng Zou", "Jian Cai", "Qian Wang" ], "n_citations": 9, "n_key_citations": 1, "score": 1 }, { "doc_id": "6963807", "title": "Characterization of after reflow misalignment on Head in Pillow defect in BGA assembly", "abstract": "Head in Pillow (HiP) defect is a common issue in the Ball Grid Array (BGA) assembly. The defect is caused by several factors, individually or jointly, which includes warpage, misalignment, oxidation of the BGA ball, solder paste oxidation barrier capability, ect. The influence of before reflow misalignment on HiP ratio(%HiP) has been studied. However, before reflow misalignment can't describe HiP defect accurately when other conditions changed. This paper focused on the influence of after reflow misalignment on HiP ratio. Meanwhile, the influence of several factors like solder paste oxidation barrier capability, reflow time, weight of package(PKG) on after reflow misalignment had also been investigated. Three kinds of reflow profiles were designed. Different oxidation barrier capability pastes were obtained with different soak times; and different reflow profiles were adjusted by setting different reflow time and soak time. In the experiment, all samples had the same before reflow misalignment. Results showed that the HiP ratio could be predicted by comparing the after reflow misalignment with the same solder paste oxidation barrier capability. There would be no or very low risk of HiP defect when the after reflow misalignment was small. Solder paste oxidation barrier capability is a key factor that impact the after reflow misalignment; low capability would cause the after reflow misalignment to be much larger than that before reflow; and %HiP increased rapidly with the increase of after reflow misalignment. That is, when increasing the solder paste oxidation barrier capability, the %HiP will be more and more insensitive to the change of after reflow misalignment. With the increase of solder paste oxidation barrier capability and reflow time, the after reflow misalignment will decrease; while it will increase with the increase of package (PKG) weight.", "corpus_id": 6963807, "venue": "2014 15th International Conference on Electronic Packaging Technology", "year": 2014, "author_names": [ "Chuan Chen", "Jian Cai", "Qian Ying Wang", "Yuming Wang", "Guisheng Zou", "Zhengyu Zhao", "Changyoung Park" ], "n_citations": 5, "n_key_citations": 1, "score": 0 }, { "doc_id": "20394826", "title": "Hidden Head In Pillow soldering failures", "abstract": "One of the upcoming reliability issues which is related to the lead free solder introduction, are the head in pillow solderability problems, mainly for BGA packages. These problems are due to excessive package warpage at reflow temperature. Both convex and concave warpage at reflow temperature can lead to the head in pillow problem where the solder paste and solder ball are in mechanical contact but not forming one uniform joint. With the thermo Moire profile measurements, this paper explains for two flex BGA packages the head in pillow. Both local and global height differences higher than 100 mm have been measured at solder reflow temperature. This can be sufficient to have no contact between the molten solder ball and solder paste. Finally, the impact of package drying is measured.", "corpus_id": 20394826, "venue": "2014 15th International Conference on Thermal, Mechanical and Mulit Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE)", "year": 2014, "author_names": [ "Bart Vandevelde", "Geert Willems", "Bart Allaert" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "137948429", "title": "Testing and prevention of head in pillow", "abstract": "Head in pillow (HIP) is ailing the electronic industry when assembling BGAs or CSPs onto PCBs. It is caused by warpage of components or boards at reflow process, and is aggravated by oxidation. Methods for assessing the potential for occurrence of HIP are highly desired by the industry. Besides using BGA rework station followed by tedious dye and pry treatment, two other simpler methods are introduced in this work, Tiny Dot Paste method and Ball Onto Paste method. Tiny Dot Paste method stressed on the assessment of oxidation barrier capability of solder paste, while Ball Onto Paste method assesses combined capability of oxidation resistance and excessive fluxing capacity. Both methods are quick, easy, and close simulation, with the latter being better in real process simulation. Prevention of HIP can be accomplished by (1) designing packages without warpage, (2) printing more paste, (3) dipping solder paste or flux, (4) using inert reflow atmosphere, (5) reducing reflow temperature, (6) placing heat shield on BGA or CSP, (7) avoiding using water soluble solder paste for BGA bumped with no clean process, (8) using solder bumps or solder powder with oxidation resistant alloy, (9) using fluxes with high oxidation barrier capability and high fluxing capacity. Among all options listed above, using solder paste with high oxidation barrier capability and high fluxing capacity is considered the most easily implemented approaches.", "corpus_id": 137948429, "venue": "ECTC 2010", "year": 2010, "author_names": [ "Yan Liu", "Mauro Fiacco", "Ning-Cheng Lee" ], "n_citations": 15, "n_key_citations": 0, "score": 1 }, { "doc_id": "222264056", "title": "Influence of Salt Residues on BGA Head in Pillow (Hip)", "abstract": "The oxide layers are known as wetting inhibitors in component and PCB metallizations. The oxide acts as barrier that prevent the tin diffusion from happening. Besides, in corrosion studies, the role of salt residues with Cl ionon some metals is known as being promoters of oxidation or corrosion. On the other hand, most of corrosion studies with tin metallization are focused mainly on the corrosion resistance of tin alloys, but little has been done respecting to the influence of salts on tin metallization wetting. In this paper, a series of experiments was carried over to know the influence of specifically NaCl on BGA wetting given Head in Pillow (HiP) as result. The aging of components was done following the procedure of J STD 002C in which the components are exposed to a low amount of steam water for several hours. As a procedure modification, NaCl was added to the water that forms steam in several concentrations. The results show the more time of steam exposition, the more HiPs are obtained. Additionally, the higher concentration of NaCl in the water, the more HiPs are formed. As a conclusion, NaCl presence could inhibit tin wetting when the proper conditions of energy and environment exist. One interesting fact is during the analysis of BGAs with SEM/EDX; the presence of NaCl was not detected on the solder/BGA ball interface but was found on its edges. This finding would be explained because solder flux tries to remove the contaminants of the interface putting them around the Ball/solder interface. Besides, the oxygen concentration on BGA balls analyzed by SEM increased little or none at all showing the oxide increase cannot be detected by this type of analysis. Because of that, TOF SIMS analysis was carried over showing an increase of oxide on tin surface. Introduction In the electronics industry, Surface Mounting Technology (SMT) has allowed the assembly miniaturization making the products smaller and more productive[1] Inside of this type of technology, the component packages have played an important role creating or having hundreds of electrical connections to the active components (Transistors, Memories, Microcontrollers, etc) in a reduced area. One of the most popular component packages is BGA (Ball Grid Array) see Figure 1. The BGAs are electronic components in which the solder joints are ball shaped and found underneath of component body. Because the component surface is used to create hundreds of solder joints, BGA may have a large number of connections giving flexibility to designers. This is very useful to exchange a lot of information (digital and analog) plus other necessary connections (Power, clock, reset, etc) therefore, many Microprocessors use BGA package as the main one to reduce their size. However, the connections are underneath the component or substrate body so it is difficult to inspect them visually (with a microscope) that is the main inspection used in SMT; Because of this, a faulty connection is very difficult to catch or detect, for example, a nonwetting solder joint using visual inspection only. One specific type of defect that has become more prevalent on Ball Grid Arrays is Head on Pillow (HoP) or Head in Pillow (Hip)[2] Head in Pillow is a BGA solder joint defect in which the solder paste wets the pad but does not fully wet the ball, see Figure 2. The solder ball physically touches the solder paste deposit but there is not a metallurgical joint. The improper electrical connection situation becomes more severe because many of these type of connections would be electrically intermittent. This is due to a lack of solderability between the ball surface and solder paste alloy due to oxidation, contamination or a mechanisms that prevents the solder alloy to form a joint with the solder balls. One of the main possible causes is excessive oxidation even though the excess oxidation has mainly been attributed to external control problems of solder paste handling or reflow profile. The Head in Pillow defects have become more prevalent since BGA components started to use lead free alloys because higher temperatures are used and fluxes are more sensitivity to oxide thicknesses. The growing use of lead free soldering in electronics manufacturing has increased defects that require proper identification and troubleshooting. Besides, a warpage effect can increase the probability of failure, when the solder reaches the liquid phase during soldering, the balls and solder As originally published in the IPC APEX EXPO Conference Proceedings. paste deposits are separated physically. Consequently, there would not be sufficient fluxing activity left to break down the oxide layer when the solder ball and solder paste deposits touches again, resulting in possible HiP defects [3] However, we have found cases in which reflow profile agrees with the recommendations of the solder paste supplier, and/or you have a proper management of solder paste, but you can have still problems with HiP One of the possible causes of Head in Pillow not investigated deeply is the presence of contaminants that could alter the solderability of the solder balls. In a recent study, we found that the presence of chlorine could inhibit the solderability of the tin metallization (SOD 123) [4] In this report, we investigated how the chlorine presence would alter the BGA solder ball solderability The tool used to perform these tests is the Design of Experiments (DOE) The DOE is defined as a set of tests in which changes in parameters that control a system or process are made in order to analyze, observe and identify the impact on the output variable or process responses. All phenomena, which can be observed and have features susceptible that would be measured, exhibit a variable behavior and we can analyze with a DOE. The design is the part that can be controlled by the experimenter, and its factor and level structure is the base of the experiments. Some of the main parts of a DOE are the Factors (Each variable that can potentially influence the outcome of an experiment, for example: temperature, time, pressure) Interactions (Effect produced by the action of a factor, modified by changes in other factors) Levels (Discrete values taken by a factor in all experiments) Main Effects (Variations in the response of the system, attributable to the change in the level of a factor) and Answers (Values of the variable being optimized for example: performance of a chemical reaction, stability of an emulsion) Figure 1. An example of Ball Grid Array (BGA) Figure 2. Head In Pillow Defect in a BGA connection (See the red circle) In the next section, several DOEs are carried over to show the influence of Chlorine on the solderability of BGA solder balls. For that, the procedure to age components is according to J STD 002, in which the metallizations are set over a small steam flow for several hours (The most recommended are 8 hrs although 16 hrs can also be used) to simulate aging or storage time. The modification is to add Cl in form of salt (NaCl or similar ones) to the steaming water and the purpose is to verify how the aging conditions would be altered with the presence of additional elements or contaminants. The suggested hypothesis is Cl presence on BGA balls before any electrical test or long storage time would diminish the wetting capacity of the BGA balls. In order to speed up storage time, the next specific procedure is followed: Components are put over steam (approx 89degC) in similar conditions described in J STD 002 but NaCl is added to the steaming water. Steam will give the energy that is given by electrical tests or storage conditions to alter BGA ball wetting. A series of DOEs was performed to analyze the solderability. I. DOE 1. Creating HiPs I.1. Objective In this DOE, a study was conducted to verify the influence of various elements including Cl on BGA solderability. The aim was to show the influence of Cl presence (in form of salts) on BGA soldering and if Head in Pillow can be created in the SMT process. The form to add Cl is using the aging steam procedure similar to J STD 002 but using tap water with NaCl added at 10% I.2. Description Table 1 shows the factor to study which is time and its levels are 3: 4, 8, 16 hrs. The constants are: Stencil, LF Profile, SMT Line, and Lead Free solder paste. The variations are component coplanarity (BGA) Pick and Place Position, Reflow oven variability. The experimental unit is a BGA with 208 solder balls and 1mm pitch. The DOE is one way Anova. Table 1. Cl presence (in form of NaCl Salt) on BGA SMT process Factors Levels Output Constant Noisy Variable Instrument of Verification Experimental Unit Type Time 3 (Steam NaCl) 4, 8, 16 hrs BGA HiP Stencil Component coplanarity Visual by Expert detaching components BGA 208 1 mm pitch One Way Anova Current Profile Pick and Place Position SMT Production Line Reflow Variability LF Solder Paste I.3. Results In residual plot analyses, see Figure 3(a) we can see there are some outliers, but we would consider these have low influence. The model would give good correlation, although the variances are influenced due to the final value, see top right graph in Figure 3(a) The p value is lower than 0.05, see Figure 3(b) This means the time under the salt containing steam has influence on BGA HiP. (a) (b) Figure 3. (a) Residual Plot Analysis, (b) Result for DOE 1 Anova: HiP versus steaming hour In the box plot, Figure 4(a) the results of HiP created per component versus time are shown. The more time, the more HiPs are created up to making the entire component not solderable. Because there is a clear relationship between HiP and time, a linear regression is proposed, see Figure 4(b) The linear regression has a R of 0.80 which is an acceptable correlation. (a) (b) Figure 4. (a) Box Plot Graph: The results of HiP number versus time, (b) Linear regression with a R of 0.80 (good correlation) I.4. HiP Images The images in Figure 5 show the", "corpus_id": 222264056, "venue": "", "year": 2015, "author_names": [ "J Servin", "C Gomez", "M Isabel Dominguez" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "211116483", "title": "Advanced Second Level Assembly Analysis Techniques Troubleshooting Head In Pillow, Opens, and Shorts with Dual Full Field 3D Surface Warpage Data Sets", "abstract": "SMT assembly planning and failure analysis of surface mount assembly defects often include component warpage evaluation. Coplanarity values of Integrated Circuit packages have traditionally been used to establish pass/fail limits. As surface mount components become smaller, with denser interconnect arrays, and processes such package on package assembly become prevalent, advanced methods using dual surface full field data become critical for effective Assembly Planning, Quality Assurance, and Failure Analysis. A more complete approach than just measuring the coplanarity of the package is needed. Analyzing the gap between two surfaces that are constantly changing during the reflow thermal cycle is required, to effectively address the challenges of modern SMT assembly. To fully understand and characterize variation in the gap that is the main cause of solder joint defects such as head in pillow, shorts, and opens, analysis of the interface between the mating surfaces needs to be: Full field: A high density of data represents surface warpage much more finely than an approximation such as coplanarity, allowing area specific review and analysis Dual surface: Making assumptions about how the \"bottom\" surface is shaped when mounting a component neglects the complex behavior the land area might exhibit during the thermal cycle, and is a deficiency when attempting thorough assembly planning or failure analysis Full profile: Making assumptions about when the single temperature when warpage of surfaces is important during the thermal cycle can lead to missing critical parts of the reflow process, overlooking when defects such as head in pillow can be caused Statistical: A large enough quantity of samples should be measured to allow confident calculation of expected average, maximum, minimum, and extreme (3s) gaps between surfaces. After measuring warpage of multiple surface mount components and land areas separately, the collected data can be combined into statistical summaries for each temperature point. Reviewing the combined data at the start of assembly planning can provide an overview of dual surface warpage at each temperature, and for the entire thermal profile. The measurement and analysis results that follow include a package to board assembly interface case study, and calculations, graphs, and methodology highlighting the use of gap limits and pass/fail maps to visualize areas with potential assembly issues. This analysis method provides new capabilities when planning and monitoring the assembly interface across a full reflow cycle that can help predict and compensate for defects such as head in pillow. Introduction The APEX 2009 publication \"Telecommunications Case Studies Address Head in Pillow (HnP) Defects and Mitigation through Assembly Process Modifications and Control\" is one of the most thorough published reviews of the head in pillow defect problem and how those responsible for troubleshooting poor yields analyze the problem and mitigate its severity. 1 In the past few years since it was published, the problem of head in pillow, or head on pillow as it is also called, has become more widely documented and discussed. It continues to grow as a concern and a detriment to both initial yield and end user field reliability, as trends in electronics design push the limits of component size, thinness, and materials, with everdecreasing interconnect pitches and solder ball sizes. All these forces make the reliable assembly of parts during the reflow process more challenging. The following is a review of a relatively new dual surface analysis method that electronics manufacturers are now using to more fully understand component shapes throughout the reflow process, during the preproduction design, assembly planning and troubleshooting, and quality assurance phases of product development and manufacturing. Warpage Standards One of the major causes of head in pillow defects, opens, and shorts/bridging, is component warpage. 2 Since packages began to be manufactured without ceramic substrates, warpage has become an important factor when assembling BGA devices, both die to substrate, and second level package to PCB. The effects of warpage have continued to increase. One of the biggest product design, production yield, and reliability issues is warpage, since excess warpage and even small variations in the amount of warpage can cause an unacceptable defect rate. 3 For many years, coplanarity has been the measure used to indicate warpage, or deviation from flatness, in the electronics industry. Simply stated, coplanarity is the distance between the highest point and the lowest point measured. Optionally, a or sign may also be assigned, indicating a 'smiling' or 'crying' shape, whether the shape is concave or convex when looked at from the side. 4 All the related industry standards in wide use today deal specifically with package warpage. How to measure it, and in some cases the allowable limits a package can demonstrate and still assemble reliably. 5 Individual companies also have their own internal, proprietary limits for components, in many cases. These limits on coplanarity are derived through calculations, experimentation, or both, and given certain process controls they serve to 'ensure' an acceptable production yield. But coplanarity limits have their own limitations. There is frustration in the industry because, while a standard that indicates a method for measuring warpage throughout the reflow cycle may be universally applicable, the standards that set specific numerical acceptance limits (such as 'package coplanarity must be less than 100 microns' can be useless or even harmful to decision making in some cases. 6 It is very likely that an assembly of components demonstrating a coplanarity within 'standard limits' could fail in certain cases, and also likely that packages with more than the established coplanarity can assemble with zero defects. Those responsible for assembly, with millions of production units to assemble and high pressure deadlines, cannot rely on the current published or proprietary standards to make the best decisions related to component shape compatibility and expected reliability. Why traditional coplanarity limits are too limited There are several reasons that setting coplanarity limits doesn't work as well as those setting the limits intend. Some of them are: The limits are generated from a relatively small set of components, under controlled conditions. All the variables in the process are not recorded, such as exact flux types and equipment settings, but the limits are derived from work done within those controlled conditions. The limits assume a low, symmetrical warpage from the land area (such as a PCB surface) Standards may indicate a warpage 'budget' for the land area of a small percentage of the total warpage, such as 20% 7 It is common for a BGA land area to demonstrate much higher warpage than this limit, even with conventional PCB materials. 8 Newer 'cutting edge' materials tend to demonstrate even higher warpage than standard materials. The limits assume peak warpage/coplanarity is the important measure, and that it occurs at a particular temperature point, such as peak temperature. Defects, especially head in pillow and non wet opens, can develop at critical points during the reflow cycle other than at peak temperature. The solder ball oxidation that results in head inpillow defects, for example, happens earlier in the cycle. 9 The limits address the warpage of a single surface, not the shape compatibility of the two surfaces that are actually attaching during assembly. With a single surface, knowing the gap that will exist at an interconnect location at a particular temperature point, which is critical to predicting reliability, is impossible. 'Gap per Interconnect' analysis prerequisites Head in pillow and most other assembly defects traditionally associated with warpage are caused by the gap between attaching surfaces at each interconnect, at different points during the reflow assembly process. For reasons including those listed above, a thorough analysis of SMT component assembly must include identifying these gaps. To be effective, the method needs to be: Dual surface for anyone who wants the true gap at each interconnect, making assumptions about half of the attachment area is not sufficient. Both surfaces must be measured, then the two surfaces must be analyzed together in a shared (x,y,z) coordinate system. Full field modern methods of measuring warpage typically include optical technologies with a fairly high data density, usually greater than 1 point per square mm. This is worth listing as a requirement though, since surfaces can have complex shapes, and checking only a few points, such as at the corners and center, cannot register shapes sufficiently to reliably establish the gap at each interconnect. Data density must be sufficient to represent the fullfield shape of the attach area. Full profile understanding the wide range of defects that can happen due to gaps during the reflow process requires analyzing gaps at various temperature points throughout that process. In most cases, evaluating gaps at multiple temperature points is necessary for thorough understanding of how the surfaces interact. Statistical enough samples must be measured, of both attachment surfaces, to be confident that they represent a statistically relevant sampling of the component population. When checking gaps at the interconnect locations, it is useful to have surfaces that represent the maximum gap expected, minimum gap, average gap, and even statistically calculated gaps such as average gap 3*(standard deviation of the gap) for each interconnect. Depending on the intent of the analysis, or the nature of the troubleshooting issue, different statistical gaps could be of more use than others. Methodology and Data For best results, dual surface", "corpus_id": 211116483, "venue": "", "year": 2012, "author_names": [ "Ken Chiavone" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "138905570", "title": "Study on Head in Pillow Defect for Lead Free BGA", "abstract": "Solder paste and solder ball are not completely fused into one BGA head in pillow,Upside down as head on a pillow.Four effective methods for observing are introduced.And analyze the potential factors of this defect from design, materials and process.Then select PCBthg point,stencil thickness,BGA mounting deviant and reflow chain speed as four factors to DOE.After successfully copy the head in pillow defect,discuss the effect of all factors.Finally find that the chain speed is the most significant one.", "corpus_id": 138905570, "venue": "", "year": 2012, "author_names": [ "Hou Chang-jin", "Smt Lab" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "128266102", "title": "Head in Pillow HnP Defects and Mitigation through Assembly Process Modifications and Control", "abstract": "One of the most perplexing phenomena in the electronic manufacturing industry today is the defect called \"head in pillow.\" Head in Pillow (HnP) defects occur on the blind solder joints of area array packages such as FBGAs, mBGAs and CSPs. Often these insufficient or intermittent solder joint defects go undetected during manufacturing despite inspection with conventional X ray systems. They also are insidious reliability defects that often escape the normal testing procedures and fail at the end user site. The head in pillow defects typically occur at the corner pins and outer rows of packages and are associated with package warpage. There are new 3D imaging systems that can help detect this, but they rely on the operator to interpret the images. There are BGA video inspection systems that can view under most devices, depending on the standoff, but they are dependent on the access, viewing angle, and operator interpretation. These x ray and video processes also are very slow and costly. There are several factors that can contribute to the head in pillow phenomena including package co planarity, package warpage, and assembly issues associated with solder paste characteristics and stencil printing. From a process standpoint, the cause of the head in pillow often is the result of the sum of all of the component and assembly process tolerances. This paper will discuss several contributing factors to the head in pillow defects and techniques to control them. It will include reviewing DOE for solder paste deposition of five different pastes, Shadow Moire scans on several problematic devices, cross section analysis of failed solder joints, and solder paste analysis of \"head in pillow\" pastes. The case studies presented show that process control can mitigate HnP defects but may not be successful for some severe examples of HnP defects. This paper uses components from telecommunication product case studies to demonstrate the effects of different contributing factors and mitigation techniques for HnP defects. The case studies include reviewing solder paste printing modifications, solder paste DOE, Shadow Moire scans on several problematic BGA packages, effectiveness of x ray inspection, and crosssection analysis of failed HnP solder joints. Together, these case studies show that BGA package warpage is a major contributor, but HnP defects can occur when almost any of the assembly process parameters deviate from acceptable practices. INTRODUCTION There are several trends in the electronics industry that have increased the challenges of surface mount (SMT) board assembly. These include conversion to Pb free manufacturing, increased density at both the printed circuit board (PCB) and package level, new package constructions, new laminate material sets, and thicker PCB constructions. One of the consequences of the evolving and challenging technologies has been the increased occurrence of an open joint ball grid array (BGA) defect called head in pillow [1 ref] This defect is known by many other names such as head on pillow, head and pillow, ball in cup, ball in socket, and hidden pillow. For the purpose of this paper, the defect will be referred to by the acronym HnP. The HnP phenomena are characterized by complete melting of both the solder paste and the BGA solder ball but with insufficient coalescence to produce well formed solder joints. Figure 1 shows examples of HnP defects using: a) an optical photomicrograph of a typical HnP metallographic cross section and b) an optical photomacrograph of the outer row of a BGA with an HnP defect. Figure 1a shows that the BGA ball sits on the solidified paste without forming a contiguous, well formed solder joint. These are latent defects that are not detected using standard manufacturing test methods such as visual inspection, x ray, and particularly electrical screening. The latter is important because these defects can pass in circuit and functional test, only to fail completely or give an intermittent connection after some period of deployment in service. The increased frequency of HnP defects has coincided with a decrease in component interconnection pitch below 1mm, a decrease in solder paste deposits below 6 mil thickness and an increase in processing temperature to accommodate Pb Free assembly. HnP is now recognized to the point that inspection systems and solder pastes are being developed to target this problem. Additionally, standards development organizations are attempting to address this from a device standpoint [ref] Despite these efforts, HnP defects have not been eliminated and in fact, probably are increasing because assembly process windows are decreasing. Typically, HnP defects are associated with the higher reflow temperatures used in Pb free manufacturing. Although surface contamination can cause HnP, it is more common for the defect to be attributed to the excessive component and PCB warpage that results from higher temperature processing. This paper will use a number of case studies to illustrate that sufficient warpage can occur in the SnPb reflow range as well as the Pb free range resulting in HnP defects. The paper also will discuss several contributing factors to the HnP defects and techniques used to mitigate or control them. This will include reviewing DOE data for solder paste deposition of five different pastes, Shadow Moire data on several problem devices, cross section analysis of failed solder joints, and a comparison of solder pastes used to mitigate HnP. The case studies presented show that process control can mitigate HnP defects but may not be completely effective in some severe examples of HnP defects. Figure 1. Examples of HnP defects a) optical micrograph of solder joint cross section, and b) Side view of a row of BGA balls with HnP at arrow. HEAD in PILLOW DESCRIPTION The HnP defects are created during the reflow process and have been described in the work by Amir et al (Intel [1] Figure 2 shows pictorially how a gap develops between the ball and the solder paste due to dynamic warpage of the package or PCB. If there is insufficient flux activity to remove the oxide coating on the surface of the ball, or there is some contamination on the solder ball or molten solder paste mass, these two will not coalesce as shown in Figure 2d. The end result is an HnP solder joint defect when the package cools below solidification (Figure 2e) Deleted:", "corpus_id": 128266102, "venue": "", "year": 2012, "author_names": [ "Russell Nowland" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "20442437", "title": "Head in pillow defect role of the solder ball alloy", "abstract": "Head in pillow (HIP) defect is a growing concern in the electronics industry. This defect is usually believed to be the result of several factors, individually or in combination. Some of the major contributing factors to the HIP defect are: surface quality of the BGA spheres, activity of the paste flux, improper placement misalignment of the components, a non optimal reflow profile, and warpage of the components.", "corpus_id": 20442437, "venue": "2010 12th Electronics Packaging Technology Conference", "year": 2010, "author_names": [ "Ranjit S Pandher", "Navendra Jodhan", "Rahul Goroba Raut", "Michael James Liberatore" ], "n_citations": 7, "n_key_citations": 1, "score": 0 }, { "doc_id": "211115017", "title": "Addressing the Challenge of Head In Pillow Defects in Electronics Assembly", "abstract": "The head in pillow defect has become a relatively common failure mode in the industry since the implementation of Pb free technologies, generating much concern. A head in pillow defect is the incomplete wetting of the entire solder joint of a BallGrid Array (BGA) Chip Scale Package (CSP) or even a Package On Package (PoP) and is characterized as a process anomaly, where the solder paste and BGA ball both reflow but do not coalesce. When looking at a cross section, it actually looks like a head has pressed into a soft pillow. There are two main sources of head in pillow defects: poor wetting and PWB or package warpage. Poor wetting can result from a variety of sources, such as solder ball oxidation, an inappropriate thermal reflow profile or poor fluxing action. This paper addresses the three sources or contributing issues (supply, process material) of the head in pillow defects. It will thoroughly review these three issues and how they relate to result in head inpillow defects. In addition, a head in pillow elimination plan will be presented with real life examples will be to illustrate these head in pillow solutions. INTRODUCTION: While the electronics manufacturing industry has been occupied with the challenge of RoHS compliance and with it Pb free soldering, trends towards increasing functionality and miniaturization have continued. The growing use of ultra fine pitch and area array devices presents challenges in both printing and flux technology. The decreasing size and pitch of said components create new problems, such as head in pillow. What does head in pillow look like? A head in pillow defect is the incomplete coalescence of the solder joint between a Ball Grid Array (BGA) Chip Scale Package (CSP) or Package on Package (PoP) and the printed solder paste. For some reason, the printed wiring board's (PWB's) printed solder and the package's solder spheres do not come together to form a single mass. At first glance, it looks as if a film has formed on the surface of the molten solder, preventing the merging of the printed and package solders. In fact, this may be true, as in some instances there seems to be an oxide film on the surface of the molten solders. In other instances, it appears that upon cooling, the exterior has already cooled enough to prevent the coalescence of the printed paste and the sphere at re connect when the warpage subsides. From the cross sections, it actually looks like a head has pressed into a soft pillow (see Figure 1) Figure 1: Example of a Head in pillow (HIP) defect It is these issues that are the cause of head in pillow defects: poor wetting and warping of the component. Upon examination, the two causes are indistinguishable, but can be identified because random head in pillow defects are caused by poor wetting, As originally published in the IPC APEX EXPO Proceedings.", "corpus_id": 211115017, "venue": "", "year": 2010, "author_names": [ "Mario Scalzo" ], "n_citations": 7, "n_key_citations": 1, "score": 0 } ]

[ { "doc_id": "73493432", "title": "Contact sport related head and neck injuries in pediatric athletes.", "abstract": "OBJECTIVES To describe the type and frequency of sports related pediatric head and neck trauma. METHODS The National Electronic Injury Surveillance System (NEISS) was searched for football, basketball, soccer, lacrosse and ice hockey related facial injuries. Cross sectional analysis of incidence, age, and sex and specific injury diagnoses, mechanisms, and facial locations were performed. We focused on craniofacial and soft tissue injuries and excluded patients with concussion or other neurological injuries. RESULTS A total of 24,905 cases were identified in the NEISS database, corresponding to an estimated, 764,293 emergency department visits. The most hazardous sports were basketball, accounting for 356,188 visits (46.6% football with 249,633 visits (32.6% and soccer with 128,113 (14.7% visits. Lacrosse and ice hockey accounted for 16,869 (1.9% and 13,490 (1.5% visits, respectively. There has been a decrease in injuries over the past 10 years, particularly for football (53% ice hockey (46% and lacrosse (41% Soccer (13% and basketball (9% noticed the smallest decreases. CONCLUSION Children who play basketball, football and soccer are especially prone to emergency department visits related to the head and neck. Overall, there has been an improvement in number of injuries across the five sports investigated. Sports amenable to head and neck protective equipment saw the largest improvement (football, ice hockey, lacrosse) whereas only small decreases were noted in basketball and soccer. Changes in regulations for sports not amenable to more protective equipment may help decrease adverse events.", "corpus_id": 73493432, "venue": "International journal of pediatric otorhinolaryngology", "year": 2019, "author_names": [ "Patrick Scheffler", "Nikolaus Ernst Wolter", "Amirpouyan Namavarian", "Evan Jon Propst", "Yvonne Chan" ], "n_citations": 12, "n_key_citations": 1, "score": 1 }, { "doc_id": "74363304", "title": "Prevalence of Traumatic Dental Injuries among Contact Sport Practitioners in Northeast of Iran in 2012", "abstract": "Introduction: Contact sports may lead to dental injures, which may often be prevented by using mouthguards. The purpose of this study was to evaluate the prevalence of traumatic dental injuries (TDI) in professional contact sport athletes and to determine the awareness regarding use of mouthguards in this group. Methods: A questionnaire containing a number of questions regarding the demographic data of participants, experiences of trauma and their behavior after that and use of mouthguard, was distributed amongst 100 contact sport athletes. Results: eighty athletes returned the questionnaire. The age range of most of the participants (44.2% was between 20 30 .Also most of them had been practicing in contact sports for 1 to 5 years (37.3% 26.2% of the athletes had experienced some sort of dental trauma. There was no significant difference between the injuries in males and females (p> 0.05) Luxation injuries were the most common type of TDI (47.7% followed by crown fractures (42.1% and avulsion (10.5% 89.7% of athletes had already been informed about using mouthguards, however only 10.3% reported having used them. Conclusion: According to the results of this study, the rate of TDI among contact sport practitioners in Iran is high; however the use of mouthguards by athletes is low. Dentists and sports authorities should promote the use of mouthguards in contact sports to decreases the risk of dental trauma and tooth loss.", "corpus_id": 74363304, "venue": "", "year": 2016, "author_names": [ "Armita Rouhani", "Jamileh Ghoddusi", "Majid Reza Rahmandost", "M Akbari" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "220541433", "title": "Cumulative Sport Related Injuries and Longer Term Impact in Retired Male Elite and Amateur Level Rugby Code Athletes and Non contact Athletes: A Retrospective Study", "abstract": "Rugby union and rugby league are popular team contact sports, but they bring a high risk of injury. Although previous studies have reported injury occurrence across one or several seasons, none have explored the total number of injuries sustained across an entire career. As the first to do so, the aim of this study was to report on cumulative injuries and their perceived long term impact in retired rugby code athletes compared to athletes from non contact sports. One hundred and eighty nine former rugby code athletes (rugby union n 145; rugby league n 44) and 65 former non contact athletes were recruited to the UK Rugby Health Project between September 2016 and December 2018. Details on sports participation, sports injuries and concussion history, sports injury related surgeries, and previous and current health were obtained from a validated, online self report questionnaire. Former elite rugby code athletes (n 83) reported more total injuries per player (median 39, IQR 35) than former amateur rugby code athletes (n 106; median 23, IQR 30; p 0.014) and non contact sports athletes (n 65; median 7.5, IQR 15; p 0.001) Concussion was the most frequently reported injury for the elite and amateur rugby code groups, followed by upper/lower back and knee ligament injuries. These injuries also presented with the highest recurrence. Rugby code groups reported a higher continued impact of previous concussion, neck injuries, shoulder dislocation, ACL tears, and knee ligament injuries (p 0.003 0.045) The reported prevalence of osteoarthritis was more than twofold greater in the elite rugby code group than in non contact athletes (51% v 22% p 0.001) The prevalence of back pain and/or severe and regular joint pain was high across all groups (47 80% particularly the elite rugby code group. The total number of joint injuries and sport injury related surgeries was higher in those who reported current osteoarthritis and current severe and regular joint pain (p 0.001 p 0.028) Across multiple injury types, past participation in rugby union and rugby league, particularly at elite level, is associated with a high cumulative injury load and a continued impact of previous injuries post retirement. Given the high number of reported concussions (and their recurrence) and associations between previous injuries during a player's career and current musculoskeletal conditions, efforts should be prioritized to reduce the occurrence and recurrence of injuries in rugby codes at all levels of the sport. Strategies should also be developed for supporting the specific physical health needs of rugby code athletes post retirement.", "corpus_id": 220541433, "venue": "Sports Medicine", "year": 2020, "author_names": [ "Karen Hind", "Natalie Konerth", "Ian Entwistle", "Alice Theadom", "Gwyn N Lewis", "Doug A King", "Paul Chazot", "Patria A Hume" ], "n_citations": 8, "n_key_citations": 0, "score": 1 }, { "doc_id": "209156090", "title": "Contact sport injuries of major nature: diagnosis and treatment.", "abstract": "", "corpus_id": 209156090, "venue": "", "year": 1961, "author_names": [ "Wood Jp" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "32794713", "title": "Contact sport injuries of major nature: diagnosis and treatment.", "abstract": "", "corpus_id": 32794713, "venue": "The Journal of the American Osteopathic Association", "year": 1961, "author_names": [ "J P Wood" ], "n_citations": 0, "n_key_citations": 0, "score": 2 }, { "doc_id": "24879155", "title": "[Sport injuries in full contact and semi contact karate]", "abstract": "BACKGROUND Karate enjoys great popularity both in professional and recreational sports and can be classified into full, half and low contact styles. The aim of this study was the analysis of sports injuries in Kyokushinkai (full contact) and traditional Karate (semi contact) METHODS In a retrospective study design, 215 active amateur karateka (114 full contact, 101 semi contact) were interviewed by means of a standardised questionnaire regarding typical sport injuries during the last 36 months. Injuries were categorised into severity grade I (not requiring medical treatment) grade II (single medical treatment) grade III (several outpatient medical treatments) and grade IV (requiring hospitalisation) RESULTS In total, 217 injuries were reported in detail. 125 injuries (58% occurred in full contact and 92 (42% in semi contact karate. The time related injury rate of full contact karateka was 1.9/1000 h compared to 1.3/1000 h of semi contact karateka (p 0.05) The most common types of injuries were musculoskeletal contusions (33% full contact, 20% semi contact) followed by articular sprains with 19% and 16% The lower extremity was affected twice as often in full contact (40% as in semi contact (20% karate. Training injuries were reported by 80% of the full contact and 77% of the semi contact karateka. Most injuries, both in training and competition, occurred in kumite. 75% of the reported injuries of full contact and 70% of semi contact karateka were classified as low grade (I or II) CONCLUSION The high rate of injuries during training and kumite (sparring) points to specific prevention goals. The emphasis should be put on proprioceptive training and consistent warm up. In the actual competition the referees play a vital role regarding prevention.", "corpus_id": 24879155, "venue": "Sportverletzung Sportschaden Organ der Gesellschaft fur Orthopadisch Traumatologische Sportmedizin", "year": 2014, "author_names": [ "Klaus Greier", "Herbert Riechelmann", "J Ziemska" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "53107633", "title": "Incidence of Sport Related Internal Organ Injuries Due to Direct Contact Mechanisms Among High School and Collegiate Athletes Across 3 National Surveillance Systems.", "abstract": "CONTEXT Although sport related internal organ injuries among athletes are relatively infrequent, combining data sources enables a more comprehensive examination of their incidence. OBJECTIVE To describe the incidence and characteristics of sport related internal organ injuries due to direct contact mechanisms among high school (HS) and collegiate athletes from 2005 2006 through 2014 2015. DESIGN Descriptive epidemiology study. SETTING United States HS and collegiate sports data from 3 national sports injury surveillance systems: High School Reporting Information Online (HS RIO) the National Collegiate Athletic Association Injury Surveillance Program (ISP) and the National Center for Catastrophic Sport Injury Research. PATIENTS OR OTHER PARTICIPANTS High school and collegiate athletes in organized sports. MAIN OUTCOME MEASURE(S) Characteristics of the athlete, event, and injury were examined and stratified by data source and sport. Descriptive statistics of internal organ injuries via direct contact mechanisms consisted of frequencies and incidence rates (IRs) per 1 000 000 athlete exposures and 95% confidence intervals (CIs) RESULTS During the 10 year period, 174 internal organ injuries were captured: 124 in HS RIO and 41 in the ISP; 9 were catastrophic. Most noncatastrophic injuries occurred among males (RIO 85% ISP 89% in football (RIO 65% ISP 58% and during competitions (RIO 67% ISP 49% and were due to player player contact (RIO 78% ISP 68% The highest injury rates were in male contact sports: RIO football (IR 11.7; 95% CI 9.1, 14.2) and lacrosse (IR 10.0; 95% CI 3.1, 16.9) ISP: football (IR 8.3; 95% CI 5.0, 11.6) and ice hockey (IR 7.9; 95% CI 1.0, 14.7) A quarter of noncatastrophic injuries were season ending (RIO 25% ISP 23% Of the 9 catastrophic injuries, most occurred in HS (7/9) and football (7/9) and were due to player player contact (6/9) Four resulted in death. CONCLUSIONS Direct contact internal organ injuries occur infrequently; yet when they do occur, they may result in severe outcomes. These findings suggest that early recognition and a better understanding of the activities associated with the event and use or nonuse of protective equipment are needed.", "corpus_id": 53107633, "venue": "Journal of athletic training", "year": 2019, "author_names": [ "Kristen L Kucera", "Dustin W Currie", "Erin B Wasserman", "Zachary Y Kerr", "Leah C Thomas", "Stephen Paul", "Rae Dawn Comstock" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "53752776", "title": "Concussive and subconcussive brain trauma: the complexity of impact biomechanics and injury risk in contact sport.", "abstract": "Head impacts that transfer mechanical energy to the skull and create brain injuries have unique dynamic responses and brain tissue trauma characteristics. The magnitude of the impact energy and how it is transmitted creates three dimensional linear and rotational accelerations of the head, resulting in unique strains on brain tissue. Biomechanical investigations of head injuries in contact sports have historically focused on attenuating energy transfer to the skull and brain. Typically, severe life threatening events are caused by high energy impact events that result in anatomic damage. Protective equipment attenuates energy transmission to neural tissues to decrease the risk of structural damage. In addition to reducing risk of skull fracture, helmets work by increasing impact compliance, to decrease the magnitude of the head's dynamic response and increase the duration of the event. This strategy helps prevent severe traumatic brain injuries and shifts the risk to concussion and repetitive head impact exposure. Metabolic, cellular, and physiologic responses characterize cumulative brain trauma that may manifest years later. Relying on the presence of symptoms to establish injury is subjective and limited in capturing the risks associated with neural tissue trauma. To more effectively capture brain injury risks in contact sports, we present the concept of brain trauma profiling, involving impact magnitude, frequency, interval, and duration of exposure. Brain trauma profiling captures and describes the cumulative and acute trauma associated injury risks unique to each sport, level of play, and player position.", "corpus_id": 53752776, "venue": "Handbook of clinical neurology", "year": 2018, "author_names": [ "C Karton", "T Blaine Hoshizaki" ], "n_citations": 13, "n_key_citations": 2, "score": 0 }, { "doc_id": "52311448", "title": "The Individual and Combined Effects of Multiple Factors on the Risk of Soft Tissue Non contact Injuries in Elite Team Sport Athletes", "abstract": "Aim: Relationships between athlete monitoring derived variables and injury risk have been investigated predominantly in isolation. The aim of this study was to evaluate the individual and combined effects of multiple factors on the risk of soft tissue non contact injuries in elite team sport athletes. Methods: Fifty five elite Australian footballers were prospectively monitored over two consecutive seasons. Internal and external training load was quantified using the session rating of perceived exertion and GPS/accelerometry, respectively. Cumulative load and acute to chronic workload ratios were derived using rolling averages and exponentially weighted moving averages. History of injuries in the current and previous seasons was recorded along with professional experience, weekly musculoskeletal screening, and subjective wellness scores for individual athletes. Individual and combined effects of these variables on injury risk were evaluated with generalized linear mixed models. Results: High cumulative loads and acute to chronic workload ratios were associated with increased risk of injuries. The effects for measures derived using exponentially weighted moving averages were greater than those for rolling averages. History of a recent injury, long term experience at professional level, and substantial reductions in a selection of musculoskeletal screening and subjective wellness scores were associated with increased risk. The effects of high cumulative loads were underestimated by ~20% before adjusting for previous injuries, whereas the effects of high acute to chronic workload ratios were overestimated by 10 15% Injury prone players, identified via player identity in the mixed model, were at 5 times higher risk of injuries compared to robust players (hazard ratio 5.4, 90% confidence limits 3.6 12) despite adjusting for training load and previous injuries. Combinations of multiple risk factors were associated with extremely large increases in risk; for example, a hazard ratio of 22 (9.7 52) was observed for the combination of high acute load, recent history of a leg injury, and a substantial reduction in the adductor squeeze test score. Conclusion: On the basis of our findings with an elite team of Australian footballers, the information from athlete monitoring practices in team sports should be interpreted collectively and used as a part of the injury prevention decision making process along with consideration of individual differences in risk.", "corpus_id": 52311448, "venue": "Front. Physiol.", "year": 2018, "author_names": [ "Alireza Esmaeili", "Will G Hopkins", "Andrew M Stewart", "George P Elias", "Brendan H Lazarus", "Robert J Aughey" ], "n_citations": 19, "n_key_citations": 1, "score": 0 }, { "doc_id": "22837169", "title": "A Comparison of Cognitive Function in Former Rugby Union Players Compared with Former Non Contact Sport Players and the Impact of Concussion History", "abstract": "AimThis study investigated differences in cognitive function between former rugby and non contact sport players, and assessed the association between concussion history and cognitive function.MethodsOverall, 366 former players (mean standard deviation [SD] age 43.3 8.2 years) were recruited from October 2012 to April 2014. Engagement in sport, general health, sports injuries and concussion history, and demographic information were obtained from an online self report questionnaire. Cognitive functioning was assessed using the online CNS Vital Signs neuropsychological test battery. Cohen's d effect size statistics were calculated for comparisons across player groups, concussion groups (one or more self reported concussions versus no concussions) and between those groups with CNS Vital Signs age matched norms (US norms) Individual differences within groups were represented as SDs.ResultsThe elite rugby group (n 103) performed worse on tests of complex attention, processing speed, executive functioning, and cognitive flexibility than the non contact sport group (n 65) and worse than the community rugby group (n 193) on complex attention. The community rugby group performed worse than the non contact group on executive functioning and cognitive flexibility. Compared with US norms, all three former player groups performed worse on verbal memory and reaction time; rugby groups performed worse on processing speed, cognitive flexibility and executive functioning; and the community rugby group performed worse on composite memory. The community rugby group and non contact sport group performed slightly better than US norms on complex attention, as did the elite rugby group for motor speed. All three player groups had greater individual differences than US norms on composite memory, verbal memory and reaction time. The elite rugby group had greater individual differences on processing speed and complex attention, and the community rugby group had greater individual differences on psychomotor speed and motor speed. The average number of concussions recalled per player was greater for elite rugby and community rugby than non contact sport. Former players who recalled one or more concussions (elite rugby, 85 community rugby, 77 non contact sport, 23 had worse scores on cognitive flexibility, executive functioning, and complex attention than players who did not recall experiencing a concussion.ConclusionsPast participation in rugby or a history of concussion were associated with small to moderate neurocognitive deficits (as indicated by worse CNS Vital Signs scores) in athletes post retirement from competitive sport.", "corpus_id": 22837169, "venue": "Sports Medicine", "year": 2016, "author_names": [ "Patria A Hume", "Alice Theadom", "Gwyn N Lewis", "Kenneth L Quarrie", "Scott Randall Brown", "Rosamund Hill", "Stephen W Marshall" ], "n_citations": 67, "n_key_citations": 2, "score": 0 } ]

[ { "doc_id": "210995209", "title": "EV Energy Management Strategies Considering Renewable Energy Consumption and Load Smoothing", "abstract": "In oder to solve the problems of orderly control of distributed renewable energy and electric vehicles(EV) in the distribution network, this paper studies the orderly energy management of distributed renewable energy and EV. The probability distribution of wind power and solar power are analyzed, and the equivalent load model of wind solar power is established by probabilistic method. Meanwhile, the analysis based on random travel simulation is carried out, and model of EV is established as well, which refinines and completing the structure methods of the travel feature. At the same time, the three layer energy management model of the EV is constructed, the duties and task division between network dispatching center and charging service provider are clarified, as well proposing the energy management strategy of tight coupling and loosely coupling. The simulation results show the energy management model proposed in this paper can effectively promote renewable energy consumption and load smoothing, which meets the needs of charging service providers through receiving guidance and self regulation of EV in their jurisdiction area.", "corpus_id": 210995209, "venue": "2019 IEEE Sustainable Power and Energy Conference (iSPEC)", "year": 2019, "author_names": [ "Chengyong Shi", "Jie Luo" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "18704506", "title": "Accuracy Evaluation by GPS Data Correction for the EV Energy Consumption Database", "abstract": "Electric vehicles (EVs) are expected to be applicable to smart grids because they have large capacity batteries. It is important that smart grid users be able to estimate surplus battery energy and/or surplus capacity in advance of deploying EVs. We constructed a database, the Energy COnsumption LOG (ECOLOG) Database System, to store vehicle daily logs acquired by smartphones placed in vehicles. The electrical energy consumption is estimated from GPS coordinate data using an EV energy consumption model. This research specifically examines commuting with a vehicle used for same route every day. We corrected GPS coordinate data by map matching, and input the data to the EV energy consumption model. We regard the remaining battery capacity data acquired by the EV CAN as correct data. Then we evaluate the accuracy of driving energy consumption logs as estimated using the corrected GPS coordinate data.", "corpus_id": 18704506, "venue": "MobiQuitous", "year": 2016, "author_names": [ "Toshiaki Uemura", "Yuta Kashiwabara", "Daiki Kawanuma", "Takashi Tomii" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "59138690", "title": "The Evaluation of EV Energy Consumption and Emission and Its Comparison of at Home and Abroad", "abstract": "This paper analyzed energy consumption and emission estimation method of Blade Electric Vehicles(BEV) both in home and abroad at first, compare its similarity and difference; Then we analyzed consumption and emission of HEV and PHEV, carefully compared the difference between China and America and drawn a conclusion that China is worse than America; At last we gave a brief introduction of EREV's consumption and emission analysis.", "corpus_id": 59138690, "venue": "", "year": 2017, "author_names": [ "Si-yu Pan" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "115594892", "title": "The Evaluation of EV Energy Consumption and Emission and Its Compare in Home and Abroad", "abstract": "", "corpus_id": 115594892, "venue": "", "year": 2017, "author_names": [ "Si-yu Pan" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "114369463", "title": "The Effect of Driving Manners on EV Energy Consumption", "abstract": "EV energy consumption was affected by driver's driving characteristic and could be lowered by perfect driving manners.The difference of energy consumption driving by different drivers was tested and driving characters of affecting the difference were discussed according to test results of electric vans running in Ji'nan city.Factors influencing EV energy consumption,such as vehicle acceleration,speed,energy recovery,driving cycle and motor overload were tested and analyzed.By vehicle controller,motor torque and over speed were controlled,and therefore driving parameters to which energy consumption was sensitive were optimized.The test of optimized electric vans is carried out,and results indicated that energy consumption of optimized vans is lowered and insensitive to different drivers.Compared to the original one,energy consumption of optimized vans could be decreased as more as 34.94%", "corpus_id": 114369463, "venue": "", "year": 2013, "author_names": [ "Zhang Hai-bo" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "126480395", "title": "Energy consumption and increased EV range evaluation through heat pump scenarios and low GWP refrigerants in the new test procedure WLTP", "abstract": "Abstract The aim of this work is to evaluate the cabin heating energy consumption and driving range for a battery electric vehicle. The vehicle was tested in climatic wind tunnel laboratory under Worldwide Harmonized Light duty vehicle Test Cycle. A heating load model was established and used to predict the heating requirements of the vehicle in different climate conditions. Three different heat pump systems and five refrigerants are also investigated. Results show an error within 5% for the established heating load model. Compared with PTC heating, the heat pump systems lead to much lower energy consumption between 41% and 72% for different scenarios. Besides, 20% and 30% recirculation air can reduce the overall consumed energy by an average of 28.5% and 36.6% respectively. Finally, the driving range of all the heat pump systems are much higher than that of PTC, which is between 14.2% and 31%", "corpus_id": 126480395, "venue": "International Journal of Refrigeration", "year": 2019, "author_names": [ "Binbin Yu", "Jingye Yang", "Dandong Wang", "Junye Shi", "Jiangping Chen" ], "n_citations": 9, "n_key_citations": 0, "score": 1 }, { "doc_id": "156441192", "title": "Preliminary Study on Evaluation System of EV Energy Consumption Economy", "abstract": "Abstrcat To define the evaluation standard of EV energy consumption economy and establish the evaluation system, the reasonable evaluation method of EV energy consumption is studied on the basis of long term running test of EV. The parameters of energy consumption economy such as driving range, capacity consumption per kilometer and energy consumption per kilometer are summarized. The merits and faults of these parameters are mentioned. As the overall merit of dynamic performance and energy consumption economy the energy utilization ratio is put forward. The function of this parameter is shown through calculation and analysis for different EVs. This is helpful to the study of the EV energy consumption economy and the comparison of energy consumption economies for different electric vehicles.", "corpus_id": 156441192, "venue": "", "year": 2005, "author_names": [ "Sun Fengchun" ], "n_citations": 11, "n_key_citations": 0, "score": 1 }, { "doc_id": "203175014", "title": "A New Approach of EV Modeling and its Control Applications to Reduce Energy Consumption", "abstract": "Efficient energy usage of electric vehicles (EVs) is an important concern, especially in relation to the use of battery energy. This paper presents a strategy to make the use of battery energy more economical by employing a new modeling approach. One of the existing EV models, called the motor vehicle model, considers the motor and the longitudinal vehicle dynamics. In this study, the motor vehicle model is further simplified by ignoring the drag force, which will be referred to as the simple model. In addition, we propose a new approach of EV modeling by including the battery dynamics into a motor vehicle model and taking into account the drag force. This model is named the Integrated Battery Electric Vehicle (IBEV) model. In order to demonstrate the usefulness of the proposed model, controllers are designed using linear quadratic integral (LQI) control. Each controller is designed for several test cases based on a linearized integrated model, after which specific test cases are carried out on a nonlinear IBEV model. From these models, the energy consumption is analyzed based on several performance indices under a number of combinations of settings, i.e. battery type (lithium ion or lead acid battery) and shaft model (rigid or flexible shaft) Further, an LQI controller with a Kalman filter is designed and its performance is compared to LQI controllers with $4^\\mathrm {th} and $5^\\mathrm {th} order Luenberger observers. The simulation results shows that the use of IBEV model reduces energy consumption compared to the use of simple model in controller design, and that the LQI controller with Kalman filter can reduce the noise effect and is more economical than the controllers with other observers.", "corpus_id": 203175014, "venue": "IEEE Access", "year": 2019, "author_names": [ "Rina Ristiana", "Arief Syaichu Rohman", "Carmadi Machbub", "Agus Purwadi", "Estiko Rijanto" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "218593688", "title": "Construction of electric vehicle driving cycle for studying electric vehicle energy consumption and equivalent emissions", "abstract": "This paper proposes an effective and scientific method for the construction of a representative driving cycle for electric vehicles (EV) and takes it as a foundation for studying the energy consumption and equivalent emissions for EV. First, a test route is developed through the analysis of the topology of the Xi'an road structure and traffic flow. Second, the vehicle driving pattern data is gathered through an integrated method of chase car method and on board method. The velocity acceleration (V A) grid method is used to divide speed and acceleration data into micro states. Third, the proposed driving cycle construction method incorporates the Markov chain and Monte Carlo (MCMC) simulation method. Then, a filter process is designed to screen out the most representative driving cycle. Finally, the comparison of the simulation result and test results shows the constructed EV driving cycle is in line with reality, and estimating the EV's energy consumption per kilometer, driving range, and equivalent emissions under official driving cycles results in large relative errors. Therefore, the construction of a real world driving cycle for specific cities or areas is necessary to evaluate energy consumption, driving range, and equivalent emissions of EV.", "corpus_id": 218593688, "venue": "Environmental Science and Pollution Research", "year": 2020, "author_names": [ "Xuan Zhao", "Yiming Ye", "J Ma", "Peilong Shi", "Hualan Chen" ], "n_citations": 63, "n_key_citations": 0, "score": 1 }, { "doc_id": "156373075", "title": "Study on EV Energy Consumption Economy", "abstract": "In view of EV energy transmission,every part for energy transmission that may affect EV economy is analyzed. The battery,motor and mechanic transmission part may affect energy consumption economy. The effect of matching of battery and motor,motor and mechanic transmission mechanism to energy consumption economy is analyzed.", "corpus_id": 156373075, "venue": "", "year": 2007, "author_names": [ "Yang Lei" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "144070735", "title": "The Impact of e Books on Young Children's Reading Habits", "abstract": "This article reports on a pilot study which aimed to consider the e book reading experiences of young children and their families, with currently available portable e reader devices: Amazon Kindle, Nintendo DS lite and Apple iPod Touch. Three families, each with two children in the 7 12 year age range, experienced an e reader for a two week period. They recorded their experiences in a diary and were interviewed at the beginning and end of the study. Key findings include the fact that, of the six children involved, four rate themselves as 'enthusiastic' readers, one 'average' and one 'reluctant' whilst all six of the parents enjoy reading. At the end of the study, all of the participants chose the Kindle as their preferred device and found it the easiest to use. In addition, there were indications that the one reluctant young reader (a boy aged eight years) was inspired to read by the Kindle. His parents were pleased with this enthusiasm, noting that he was reading rather than watching television, excited by downloading and choosing books and it was the only time they had known him to ask to read voluntarily. When asked whether they prefer printed or electronic books, all of the adults chose printed books, whilst the children were more ambivalent, with half preferring electronic books.", "corpus_id": 144070735, "venue": "", "year": 2010, "author_names": [ "Sally Maynard" ], "n_citations": 84, "n_key_citations": 9, "score": 1 }, { "doc_id": "167190471", "title": "Cannibalization or Market Expansion? The Impact of E Books on Print Book Sales", "abstract": "E book sales have experienced rapid growth in the past few years, yet their impact on print book sales remains unclear. This paper empirically investigates the cannibalization and market expansion effects of e books. Using individual level transaction data from 2008 to 2012, we estimate a dynamic structural model of consumer e reader adoption and subsequent book purchases, including quantity, reading format (e book or print book) and retailer choices in a number of book categories. We emphasize in the model the role of consumers' self selection into buying e readers based on heterogeneous book tastes. We find that on average, 42% of e book sales come from cannibalizing print book sales and 58% come from market expansion. Among the cannibalization effect, offline bookstores bear 53% of the cannibalization loss, while Amazon bears 32% and other online retailers bear 15% We discuss how the impact of e books would change under counterfactual pricing scenarios using the estimated demand system.", "corpus_id": 167190471, "venue": "", "year": 2015, "author_names": [ "Hui Li" ], "n_citations": 12, "n_key_citations": 1, "score": 1 }, { "doc_id": "28872456", "title": "The Impact of e Books on the Printed Books: e Books Popularity, Growth and Future", "abstract": "This study aims to identify the preferences of the net generation readers in print and electronic media activities and to investigate the impact of e books on the printed books, and try and see if printed books are being gradually replaced by electronic one. The survey method of research was applied to conduct the study and questionnaire was used as a data collection tool. The stratified random sampling technique was employed for selection of participants. Comparing readers' preferences between reading a printed book and electronic media, it seems that e book Growth is slowing, but still substantial, and the majority of book readers believe that e books will become more popular than the printed books in the future.", "corpus_id": 28872456, "venue": "2015 Fifth International Conference on e Learning (econf)", "year": 2015, "author_names": [ "Zakaria I Saleh", "Ahmad Shaher Mashhur" ], "n_citations": 5, "n_key_citations": 0, "score": 1 }, { "doc_id": "148704960", "title": "The impact of interface on ESL reading comprehension and strategy use: A comparison of e books and paper texts", "abstract": "", "corpus_id": 148704960, "venue": "", "year": 2017, "author_names": [ "Sarah A Isaacson" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "63118708", "title": "The impact of interface on strategy use and ESL reading comprehension a comparison of e books and paper texts", "abstract": "", "corpus_id": 63118708, "venue": "", "year": 2016, "author_names": [ "Sarah A Isaacson" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "153574918", "title": "The Impact of E Readers and E Books on the Library of Congress and the US Copyright Office", "abstract": "Consumer acceptance of e readers, tablets, and e books has been covered extensively by the press. These trends have been a significant business opportunity for some authors, publishers, e reader or tablet manufacturers, or distributors because a new market has emerged and 'new' readers have been attracted to the portability and the price of e readers and e books. But there is a 'dark side of the moon. E readers and e books have emerged as 'disruptive technologies, resulting in a reduction in the number of book outlets and printed books sold in the United States. In this research paper, we investigate the current and potential impact of e books on the Library of Congress and the US Copyright Office, including the budgets, staffing, and operations of the Library of Congress and the US Copyright Office, and the need to digitize the vast book collection of the Library of Congress. This paper presents a series of recommendations for both the Library of Congress and the US Copyright Office.", "corpus_id": 153574918, "venue": "", "year": 2013, "author_names": [ "Michael Artiles", "Michael Christian Samantha Madeline Andrew Alexa Albert N Beaulieu", "Michael Christian Samantha Madeline Andrew Alexa Albert N Carey", "Michael Christian Samantha Madeline Andrew Alexa Albert N Danza", "Michael Christian Samantha Madeline Andrew Alexa Albert N Gatian", "Michael Christian Samantha Madeline Andrew Alexa Albert N Gavin", "Michael Christian Samantha Madeline Andrew Alexa Albert N Greco", "Michael Christian Samantha Madeline Andrew Alexa Albert N Jameson", "Michael Christian Samantha Madeline Andrew Alexa Albert N McWilliams", "Michael A Samuelson", "Michael Christian Samantha Madeline Andrew Alexa Albert N Wharton" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "59765234", "title": "E Books and New Library Service Models: An Analysis of the Impact of E Book Technology on Academic Libraries.", "abstract": "This article will analyze the implications of e book technology on academic libraries. Although we are at a very early stage of e book evolution, business models, standards, and supporting technology are under development that will dramatically affect libraries and librarians. Librarians and administrators therefore must understand thoroughly these trends in order to apply effectively the resulting innovations within their institutions. As Martrell states, \" librarians must begin to design an imaginative, easily identifiable space in cyberspace as the centrality of the library as a physical phenomenon slowly fades.\"[1] Improving library service by extrapolation from existing services, doing the same things faster and better, will provide incremental improvements but will not move us quickly to that \"identifiable space\" of which Martrell writes. Effectively introducing e books into a library has significant implications on our users, our existing services, and how we do business. The capabilities and the limitations of the e book and related technologies therefore are used in this article to provide a framework for examining the implications of this technology on service in academic libraries. It is the author's view that we must understand not only the technology but also the end to end process that will transform the capabilities of the technology into an effective service. An example will help illustrate how we cannot just \"plug in\" a digital innovation into existing services without addressing the broader process and technological environment. An Example Large Digital Objects Most university libraries are beginning to amass a sizable collection of digital materials that include e books, dissertations, journal articles, numeric data, and digital maps. [Note: The term \"e book\" will be used in this paper to designate the content of the book that is represented in some digital format such as PDF or the XML based Open eBook Publication Structure.[2] For simplicity, in situations where the context is clear, the term \"e book\" also will be used to refer to the reading device. In cases where the context is not clear, \"e book reading device\" will be used to refer to the hardware/software platform which is devoid of content. Much of this digital material comes in the form of what could be called a \"large digital object.\" For purposes of this article, a large digital object is a library information source that is contained in a computer file which is larger than 1.4 MB (i.e. the object won't fit on a diskette) From a user's perspective, these large digital objects are difficult to access and use, given existing processes and technological capabilities within libraries. Recently, a patron came to the reference desk at Rutgers University Libraries (RUL) and asked how she could get a copy of one of the books from EEBO (Early English Books Online www.lib.umi.com/eebo) a collection of some 125,000 titles from the medieval period that RUL has licensed from Bell and Howell. The EEBO service allows patrons to search and actually download a copy of a book to their local computer. The books are typically in PDF or djvu (www.djvu.com) format and often can be in the order of 10 to 20 MB or larger in size. The choices for this student to \"check out\" the digital book were: (1) go to her home computer and download the file over a slow voice grade telephone line; (2) buy a zip disk and then find a public computer at the university that had a zip drive and download the book; or (3) print the book (perhaps several hundred pages) at one of the computer labs on campus. None of these solutions was very satisfactory for the patron. In this advancing digital library era, we are tantalizing our users by offering rapid access to digital sources and simultaneously frustrating them by not providing effective end to end processes that enable ease of use. The student scenario described above will occur more frequently as we buy more digital book collections.", "corpus_id": 59765234, "venue": "", "year": 2001, "author_names": [ "Ronald C Jantz" ], "n_citations": 41, "n_key_citations": 1, "score": 0 }, { "doc_id": "54213050", "title": "The Impact of Mini Computers and e Books on the Success of At risk College Students", "abstract": "Academically underprepared college students; i.e. those identified as needing developmental (remedial) English, mathematics and reading courses in order to maximize their potential for academic success at college level studies, were provided with the opportunity to rent, for a minimal, subsidized fee, mini computers bundled with digital course materials (e books) The academic aptitude of the students who participated in the study was assessed when they entered the program, and their academic performance was assessed at the conclusion of the semester in which they were provided with these resources. The aptitude, performance and retention of program participants were then compared to those of similarly underprepared students who were not provided with these resources. Analysis of Variance revealed no statistically significant differences between the academic performance or retention of the two groups.", "corpus_id": 54213050, "venue": "", "year": 2011, "author_names": [ "Aaron W Hughey", "Charlene Manco" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "27176167", "title": "Budget impact analysis of sargramostim use in patients with chemotherapy induced neutropenia.", "abstract": "e20596 Background: Myeloid growth factors are used to treat and prevent chemotherapy induced neutropenia (CIN) Filgrastim and its long acting version pegfilgrastim are granulocyte colony stimulating factors (G CSF) whereas sargramostim is a dual granulocyte macrophage colony stimulating factor (GM CSF) This study analyzed the budget impact of substituting GM CSF for G CSF in the management of CIN from the perspective of a US health plan. METHODS A spreadsheet model was developed to compute annual and per member per month (PMPM) costs associated with CSFs. Inputs included cancer prevalence, the proportion of patients receiving chemotherapy and G/GM CSFs, incidence and cost of relevant adverse events (e.g. bone pain) and G/GM CSF drug acquisition and administration costs. Incidence and cost of infection and febrile neutropenia related hospitalizations, based on recent analysis of medical insurance claims data, were also used. Cost savings (2006 USD) were assessed for utilization share switches from G CSF to GM CSF. RESULTS For a health plan with 1 million members, an estimated 976 patients received G/GM CSF annually. Increasing baseline utilization shares for pegfilgrastim, filgrastim, and sargramostim of 70/30/0% respectively, to alternative shares of 50/25/25% yielded substantial cost savings (see Table primarily related to G/GM CSF acquisition and administration costs. Savings for patients switching from pegfilgrastim were greater than for patients switching from filgrastim. Results were sensitive to assumptions for drug cost and frequency of administration, but cost savings were observed for most scenarios. CONCLUSIONS This study suggests that health plans can realize substantial cost savings by substituting sargramostim for filgrastim and pegfilgrastim in CIN patients. With 25% of sargramostim substitution, the cost saving could reach $2 million for a health plan with 1 million members, or a saving of 16 cents per member per month. [Table: see text] [Table: see text]", "corpus_id": 27176167, "venue": "Journal of clinical oncology official journal of the American Society of Clinical Oncology", "year": 2009, "author_names": [ "Mei Sheng Duh", "Edmond L Toy", "Courtney Porter", "P L Books", "Francis Vekeman", "Victoria E Barghout", "Arthur T Skarin" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "207645038", "title": "Tribute to H. Eugene Stanley.", "abstract": "T issue of the Journal of Physical Chemistry B is dedicated to H. Eugene (Gene) Stanley, William Fairfield Warren Distinguished Professor and Professor of Physics, Chemistry, Biomedical Engineering, and Physiology at Boston University. The scope of Gene Stanley's research accomplishments is virtually unparalleled in the physical sciences. In more than 1000 publications, he has made groundbreaking contributions to the fundamental understanding of phase transitions, critical phenomena, polymers, biological materials, protein aggregation, the statistics of DNA sequences, econophysics, granular materials, physical and social networks, and especially supercooled and glassy water. With nearly 48,000 citations to his journal articles (109 of them with more than 109 citations) and over 8000 citations to his books, Gene's work has had enormous impact across many fields of science. Gene's contributions in condensed matter theory include his important early work on the two dimensional Heisenberg ferromagnet and the spherical model, as well as subsequent fundamental studies of percolation and dendritic crystal growth. He has fruitfully applied scaling concepts that underlie the theory of critical phenomena to biology, discovering long range correlations in noncoding nucleotide sequences in DNA and longranged anticorrelations in sequences of human heartbeats; to economic systems, showing that the dynamics of the Standard Poor's 500 economic indicator can be described as a L evy stable process; and to medicine, demonstrating scaling behavior in the size distribution of neuropathological lesions in Alzheimer disease. His work on networks, both physical and social, has led to deep insights on topics ranging from the web of human sexual contacts to urban growth patterns and from the general scaling properties of networks to the catastrophic failure of power grids. Along with a select group of scientists including Austen Angell, Osamu Mishima, and the late Erwin Mayer, Gene has helped to define the boundaries of contemporary knowledge onmetastable water at low temperatures. In more than three decades of pioneering work, he has been the originator of the picture of water as a transient gel, and of the liquid liquid phase transition hypothesis for the phase behavior of cold, metastable water. Because of water's unique importance, this body of work has farreaching implications in biology, astrophysics, materials science, and the technology of low temperature preservation of biological molecules. In 1979, Gene proposed a model that has had lasting impact on the understanding of supercooled water. In this model, correlations between density, energy, and entropy fluctuations arising from the formation of hydrogen bonds give rise, at low temperatures, to anomalous increases in the response functions, such as those observed experimentally in supercooled water. This model, which was subsequently discussed in detail in a now classic paper with Jos e Teixeira, provided the first molecular based interpretation of the anomalous properties of supercooled water (sharp increase of response functions upon cooling) which had been discovered by Angell and co workers a few years before. For more than a decade, the Stanley Teixeira correlated site percolation model, together with Speedy's stabilitylimit conjecture set the terms of the debate on the interpretation of supercooled water's thermodynamic behavior. In a series of highly influential papers beginning in 1992, Gene and his co workers proposed the fascinating hypothesis that, at sufficiently low temperatures, pure water phase separates into two distinct forms. According to the liquid liquid phase transition hypothesis, the two low temperature phases are the liquid analogues of the two experimentally observed distinct glassy phases of water, known as LDA (low density amorphous ice) and HDA (high density amorphous ice) Two papers from among this body of work deserve special mention: the 1992 molecular dynamics study of supercooled and glassy water, where the liquid liquid transition hypothesis was first formulated, and the 1998 paper with Mishima, which, in a veritable experimental tour de force (measuring the metastable melting curve of a high pressure polymorph of ice) provided evidence consistent with the liquid liquid transition hypothesis. The liquid liquid phase transition hypothesis remains a subject of active inquiry and vigorous debate. In addition to providing a plausible (but not proved) interpretation of experimental observations on supercooled and glassy water, it has also opened up an entirely new field of research, which has come to be", "corpus_id": 207645038, "venue": "The journal of physical chemistry. B", "year": 2011, "author_names": [ "Pablo G Debenedetti", "Sharon C Glotzer" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "214323413", "title": "A Novel Energy Recovery System Integrating Flywheel and Flow Regeneration for a Hydraulic Excavator Boom System", "abstract": "Implementing an energy recovery system (ERS) is an effective solution to improve energy efficiency for hydraulic excavators (HEs) A flywheel energy recovery system (FERS) is proposed based on this concept. A hydraulic pump motor (PM) is employed as the energy conversion component and a flywheel is used as the energy storage component. Since the pressure is low because the bucket is usually empty as the boom lowers, a relatively large PM should be used in the FERS. To overcome this drawback, a novel compound energy recovery system integrating flywheel and flow regeneration (FFERS) is proposed in this paper. The working principle of the system is analyzed in detail. The introduction of flow regeneration has two benefits; one is downsizing the displacement of PM and the other one is an extra improvement of energy efficiency. The primary parameters of both are matched based on a 4 t excavator. Compared with the PM used in the FERS, the PM displacement in the FFERS is reduced by 71% For comparison, a general model that can operate in either the FERS mode or the FFERS mode is developed in AMESim. The modeling results show that the FFERS with a downsized PM contributes a 13% increase in energy recovery and reutilization efficiency (62% as compared with the FERS.", "corpus_id": 214323413, "venue": "", "year": 2020, "author_names": [ "Jiansong Li", "Wei Zhao", "Xiao-chun Zhang" ], "n_citations": 12, "n_key_citations": 0, "score": 0 }, { "doc_id": "220071577", "title": "Parameter Matching and Control of Series Hybrid Hydraulic Excavator Based on Electro Hydraulic Composite Energy Storage", "abstract": "Traditional excavators driven by diesel engine have poor emissions and low energy efficiency. Pure electric driven excavators have high cost and limited endurance. Therefore, at present, hybrid power train system is an ideal candidate for excavators to realize energy saving and emission reduction. In this paper, a novel series hybrid hydraulic excavator based on electro hydraulic composite energy storage, which provides the average power of the system through the diesel engine, and the battery and accumulator are used as the intermediate energy storage devitalize the output current of the battery, and improve the service life of the battery, is proposed. Advantages of high energy density of battery and high power density of hydraulic accumulator are synthetically utilized. A 7 ton crawler excavator is taken as the research object, according to typical load spectrum, through analysis method and modeling method, and using dynamic programming (DP) to optimize the parameters of the novel series power train system. The control strategy of the power system is further studied, and the AMESim and Simlink co simulation models of the transmission system is established to verify the feasibility of the system. At last, the experimental platform is built. Experiments are conducted to verify the effectiveness of the power train system.", "corpus_id": 220071577, "venue": "IEEE Access", "year": 2020, "author_names": [ "Hongmei Wang", "Qingfeng Wang" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "218893275", "title": "Influence of Restrictions on Range of View From Cockpit in Operation of Hydraulic Excavator", "abstract": "We investigated the effect of restricting the field of view from the cockpit on the operation of a hydraulic excavator. We developed a computer simulation for the turning operation of an excavator and we performed an experiment. In the experiment, we recorded the operation time required to complete various reaching tasks. We found that the operation time depends on the distance from the start position to the target position, target size, and the field of view width. We propose an extension to Fitts' law model to represent the operation time according to the operation's index of difficulty, which consists of the target distance, target size, and field of view width. The developed model was evaluated by the simulation results and the results obtained by an experiment with an actual hydraulic excavator. We observed significant improvement in the coefficient of determination between the operation time obtained by the experiments and the proposed index of difficulty.", "corpus_id": 218893275, "venue": "IEEE Access", "year": 2020, "author_names": [ "Kazuyuki Matsumura", "Masaru Ito", "Seiji Saiki", "Yoichiro Yamazaki", "Yuichi Kurita" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "229493025", "title": "Modeling, Simulation, and Analysis of Auto Warming Up and Overheat Prevention System in Komatsu Hydraulic Excavator PC 200 8", "abstract": "Komatsu PC 200 8 hydraulic excavator is one of the most popular heavy equipment machine models, widely used in general sectors: construction, agriculture, and plantation. This excavator is equipped with electrical system, hydraulic system, and mechatronic system. All actuator movement in this excavator are controlled by mechatronic system. High skilled mechanics are needed to maintain the mechatronic system in this excavator. Good training method is needed to produce a skillful mechanic. The training method is conducted by theoretical introduction of the mechatronic system and followed by practice in laboratories, workshops, as well as in the field. In this project, mechatronic system simulator for Komatsu hydraulic excavator is developed to simulate auto warming up and overheat prevention system for the training purpose. The simulator has been tested in training and based on interviews with trainees, the simulator can help the learning process in the training and improve trainee knowledge and understand to operate and maintain the control system on hydraulic excavator.", "corpus_id": 229493025, "venue": "", "year": 2020, "author_names": [ "Sri Sadono", "Cuk Supriyadi Ali N", "Dena Hendriana", "Henry Nasution", "Gembong Baskoro" ], "n_citations": 0, "n_key_citations": 0, "score": 2 }, { "doc_id": "229078098", "title": "Research on efficient driving method of heavy hydraulic excavator boom", "abstract": "There is a lot of gravitational potential energy waste when hydraulic excavators work, which seriously affects the efficiency of the whole machine and produces a large amount of emissions. In order to reduce the energy consumption and emissions of large hydraulic excavators which the boom is driven by two hydraulic cylinders, an integrated drive and potential energy recuperation principle is proposed. In the implementation, the original two chamber hydraulic cylinders are replaced by three chamber hydraulic cylinders with energy storage chambers, and the energy storage chambers are directly connected with the hydraulic accumulator. The dead weight of the working device is balanced by the initial hydraulic pressure of the hydraulic accumulator, and the gravitational potential energy is directly recuperated. A digital prototype is established for the simulation work to verify the energy saving effect. Then a test prototype is constructed according to the simulation work. The standard 90deg loading duty cycle tests show that compared with the standard hydraulic excavators of the same type, in the case of meeting the same digging force, the working efficiency of the excavator increases by 20.7% and the fuel consumption decreases by 17.1% In terms of 8 hours of work per day, a single excavator can save fuel up to 47 L per day and reduce carbon dioxide emissions by 123.6 kg.", "corpus_id": 229078098, "venue": "", "year": 2020, "author_names": [ "Lianpeng Xia", "Long Quan", "Bin Zhao", "Bin Li" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "234380744", "title": "A Boom Energy Regeneration System of Hybrid Hydraulic Excavator Using Energy Conversion Components", "abstract": "In this paper, a novel design of an energy regeneration system was proposed for recovering as well as reusing potential energy in a boom cylinder. The proposed system included a hydraulic pump/motor and an electrical motor/generator. When the boom moved down, the energy regeneration components converted the hydraulic energy to electrical energy and stored in a battery. Then, the regenerated energy was reused at subsequent cycles. In addition, an energy management strategy has been designed based on discrete time optimal control to guarantee position tracking performance and ensure component safety during the operation. To verify the effectiveness of the proposed system, a co simulation (using MATLAB and AMESim) was carried out. Through the simulation results, the maximum energy regeneration efficiency could achieve up to 44% Besides, the velocity and position of the boom cylinder achieved good performance with the proposed control strategy.", "corpus_id": 234380744, "venue": "", "year": 2020, "author_names": [ "Tri Cuong Do", "Duc Giap Nguyen", "Tri Dung Dang", "Kyoung Kwan Ahn" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "216410692", "title": "IMPROVEMENT OF THE HYDRAULIC EXCAVATOR'S WORKING EQUIPMENT", "abstract": "Introduction. The age composition of the main pipelines of Russia significantly exceeds the period of their standard operation, which necessitates the provision of their reliable, trouble free operation sometimes in difficult environmental conditions. Timely delivery of the required amount of hydrocarbon raw materials to various regions of our country and abroad depends on the quality and speed of the repair work. The speed of the pipeline overhaul, which consists in replacing old pipes with new ones, depends on the effectiveness of the entire repair string as a whole. The main excavation machine is a hydraulic excavator. Soil is removed on both sides of the pipeline, but there is a problem of excavation under the pipeline. Existing solutions to the problem are highly complex, which only complicates the repair process. Therefore, the authors develop the working equipment of the excavator, which is installed after digging the pits of the trench.Materials and methods. The authors performed a review and analysis of existing equipment designs for the soil development under the pipeline. Moreover, the authors developed a new design of interchangeable working equipment for a single bucket excavator.Results. As a result, the authors presented a detailed description of the working equipment of a single bucket excavator and the principle of its operation.Discussion and conclusions. The proposed technical solution allows excluding excavation under the main pipeline, which is carried out using a trench tool. This method significantly increases the efficiency of excavation and the pace of repair work as a whole.The authors have read and approved the final manuscript. Financial transparency: the authors have no financial interest in the presented materials or methods. There is no conflict of interest.", "corpus_id": 216410692, "venue": "", "year": 2020, "author_names": [ "A I Demidenko", "I S Kuznetsov" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "226489161", "title": "Determination of the working area of a hydraulic excavator", "abstract": "The article discusses the mechanisms of walking used on dragline excavators. The disadvantages of each mechanism are identified and based on this, the most promising movement mechanism is selected a three legged walking mechanism with a hydraulic drive. For this mechanism, the main disadvantages are also identified. The following is a technical solution that allows you to save this mechanism from the main drawback the need to raise the center of mass of the excavator to a significant height to ensure the maximum step value. The technical solution includes the presence of a flat hydrostatic support that allows to increase the efficiency of the mechanism in open pit mining operations. The calculation of oil consumption through a flat hydrostatic support in the conditions of its use on quarry soils with different bearing capacity is made.", "corpus_id": 226489161, "venue": "", "year": 2020, "author_names": [ "Nikolay Suslov", "Stanislav Chernukhin" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "226716051", "title": "Determination of the working area of a hydraulic excavator", "abstract": "The relevance of the work is due to the need of the design departments involved in the design of hydraulic excavators in techniques that reduce the mass of excavators while providing the required technological capabilities. Existing methods are aimed at determining the size of working equipment on the condition of providing a given working area. The methods are based on an algorithm for calculating the boundaries of the working area for the input dimensions of the boom, stick and bucket, if the obtained boundaries do not correspond to the specified ones, then the dimen sions of the equipment are adjusted and the calculations are repeated. The boundaries of the working zone determined by these algorithms do not take into account the power capabilities the bucket can be at a given point, but the realized forces on the teeth do not ensure separation of the rock. The article discusses the methodology in which possible digging efforts are calculated at all points where the bucket can be located. Results. For a hydraulic excavator with working equipment \"direct shov el\" a mathematical model for calculating digging forces, an algorithm and a program in algorithmic language have been developed to determine possible forces in the elements of the working equipment.", "corpus_id": 226716051, "venue": "", "year": 2020, "author_names": [ "V S Shestakov", "Pavel Bezkorovainyy", "Tatyana Franz" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "230720816", "title": "Pengenalan Produk dan Promosi Alat Berat Hydraulic Excavator", "abstract": "This research explains 320D2 GC Hydraulic Excavators. This study uses a qualitativemethod with a literature approach. Data collection was obtained from several sourcesfrom scientific books, research reports, scientific essays, theses and dissertations,regulations, provisions, yearbooks, encyclopedias, and sources which cannot bediscussed accurately electronically.The results showed that the product features possessed by Hydraulic Excavators type320D2 GC are technology, perceived usability, and convenience of use. As for productquality, brand utility, accessories, and guarantees. In the promotion of 320D2 HydraulicExcavators heavy equipment there are special offers, support, joint ventures, andcampaigns.Limitations Implications for research are limited to product introduction andpromotion so further research needs to follow up on this research using differentresearch methods.", "corpus_id": 230720816, "venue": "", "year": 2020, "author_names": [ "Nugroho Setio Aji" ], "n_citations": 0, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "226848649", "title": "High Precision Phase Recovery for Single Frame Fringe Pattern of Label free Cells Detection Based on Deep Learning", "abstract": "As the basic unit of organism composition and life activity, the change of physiological state of cell is important to clinical disease prediction and diagnosis, especially blood diseases. In order to obtain the morphology of blood cells with abundant information content in 3D space without any biochemical or other complex processing for samples, this study proposed a transverse shear interference 3D imaging detection method for real time dynamic label free living cells based on deep learning. The phase extraction and recovery method of single red blood cell interference fringe image obtained by quantitative phase imaging system is carried out by Generating Antagonism Network (GAN) This method has a great improvement in efficiency and accuracy, it has a profound impact on the study of biological cells, and can be extended to the fields of cancer diagnosis and drug development in genomics.", "corpus_id": 226848649, "venue": "2020 15th IEEE Conference on Industrial Electronics and Applications (ICIEA)", "year": 2020, "author_names": [ "Lu Zhang", "Zhiyuan Tang", "He Yang", "Zewen Yang", "Shuang Chen", "Ning Lv", "Huijun Wang", "Xiaorong Shen", "Yingzhe Tu", "Li Yuan" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "215816243", "title": "An Automatic Cell Nuclei Segmentation based on Deep Learning Strategies", "abstract": "Automatic analysis of histopathology specimens images can be utilized in early extraction and detection of diseases such brain tumor, breast malignancy, colon cancer etc. The early detection of cancer may allow patients to take proper treatment. In this paper, an automatic cell nuclei segmentation based on deep learning strategies using 2 $D$ histological images is proposed. In the proposed approach U Net architecture is used and its hyper parameters are tuned to segment the cell nuclei. The proposed solution is built upon the highly adaptive nature of U Net architecture. The task of nuclei segmentation in the proposed approach includes detection of nuclei in an image and extracting the foreground, while segmenting the connected foreground area into separated nuclei masks. In the experimental results the proposed approach is tested using the dataset having histopathological cell images of breast cancer. The results shows that the proposed deep learning based approach achieved the 86 average accuracy in segmentation of cell nuclei and also outperforms the other deep learning architectures.", "corpus_id": 215816243, "venue": "2019 IEEE Conference on Information and Communication Technology", "year": 2019, "author_names": [ "Ayush Mandloi", "Ushnesha Daripa", "Mukta Sharma", "Mahua Bhattacharya" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "209696181", "title": "Wireless Capsule Endoscopy: A New Tool for Cancer Screening in the Colon With Deep Learning Based Polyp Recognition", "abstract": "Accurate recognition of polyps is crucial for early colorectal cancer diagnosis and treatment. Wireless capsule endoscopy (WCE) is a noninvasive, wireless imaging tool that allows direct visualization of the entire colon without discomfort to patients and has the potential to revolutionize the screening workup for colorectal diseases. However, current manual review is laborious and time consuming, requiring the undivided concentration of the gastroenterologist. Computational methods that can assist automated polyp recognition will enhance the outcome both in terms of diagnostic accuracy and efficiency of WCE. This review introduces the computer assisted algorithms as applied to colorectal polyp screening, focusing on the successes of deep learning based strategies in the WCE sequences. We survey key applications of WCE polyp recognition, covering deep learning based image level classification, lesion region detection, and pixel accurate segmentation. We conclude by discussing emerging research challenges, possible trends, and future directions.", "corpus_id": 209696181, "venue": "Proceedings of the IEEE", "year": 2020, "author_names": [ "Xiao Jia", "Xiaohan Xing", "Yixuan Yuan", "Lei Xing", "Max Q -H Meng" ], "n_citations": 14, "n_key_citations": 0, "score": 1 }, { "doc_id": "215721598", "title": "Optimal Feature Selection Based Medical Image Classification Using Deep Learning Model in Internet of Medical Things", "abstract": "Internet of Medical Things (IoMT) is the collection of medical devices and related applications which link the healthcare IT systems through online computer networks. In the field of diagnosis, medical image classification plays an important role in prediction and early diagnosis of critical diseases. Medical images form an indispensable part of a patient's health record which can be applied to control, handle and treat the diseases. But, classification of images is a challenging task in computer based diagnostics. In this research article, we have introduced a improved classifier i.e. Optimal Deep Learning (DL) for classification of lung cancer, brain image, and Alzheimer's disease. The researchers proposed the Optimal Feature Selection based Medical Image Classification using DL model by incorporating preprocessing, feature selection and classification. The main goal of the paper is to derive an optimal feature selection model for effective medical image classification. To enhance the performance of the DL classifier, Opposition based Crow Search (OCS) algorithm is proposed. The OCS algorithm picks the optimal features from pre processed images, here Multi texture, grey level features were selected for the analysis. Finally, the optimal features improved the classification result and increased the accuracy, specificity and sensitivity in the diagnosis of medical images. The proposed results were implemented in MATLAB and compared with existing feature selection models and other classification approaches. The proposed model achieved the maximum performance in terms of accuracy, sensitivity and specificity being 95.22% 86.45 and 100% for the applied set of images.", "corpus_id": 215721598, "venue": "IEEE Access", "year": 2020, "author_names": [ "R Joshua Samuel Raj", "S Jeya Shobana", "Irina Valeryevna Pustokhina", "Denis Alexandrovich Pustokhin", "Deepak Gupta", "K Shankar" ], "n_citations": 65, "n_key_citations": 0, "score": 0 }, { "doc_id": "218950464", "title": "Deep Learning Assisted Efficient AdaBoost Algorithm for Breast Cancer Detection and Early Diagnosis", "abstract": "Breast cancer is one of the most dangerous diseases and the second largest cause of female cancer death. Breast cancer starts when malignant, cancerous lumps start to grow from the breast cells. Self tests and Periodic clinical checks help to early diagnosis and thereby improve the survival chances significantly. The breast cancer classification is a medical method that provides researchers and scientists with a great challenge. Neural networks have recently become a popular tool in cancer data classification. In this paper, Deep Learning assisted Efficient Adaboost Algorithm (DLA EABA) for breast cancer detection has been mathematically proposed with advanced computational techniques. In addition to traditional computer vision approaches, tumor classification methods using transfers are being actively developed through the use of deep convolutional neural networks (CNNs) This study starts with examining the CNN based transfer learning to characterize breast masses for different diagnostic, predictive tasks or prognostic or in several imaging modalities, such as Magnetic Resonance Imaging (MRI) Ultrasound (US) digital breast tomosynthesis and mammography. The deep learning framework contains several convolutional layers, LSTM, Max pooling layers. The classification and error estimation that has been included in a fully connected layer and a softmax layer. This paper focuses on combining these machine learning approaches with the methods of selecting features and extracting them through evaluating their output using classification and segmentation techniques to find the most appropriate approach. The experimental results show that the high accuracy level of 97.2% Sensitivity 98.3% and Specificity 96.5% has been compared to other existing systems.", "corpus_id": 218950464, "venue": "IEEE Access", "year": 2020, "author_names": [ "Jing Zheng", "De-nan Lin", "Zhongjun Gao", "Shuang Wang", "Mingjie He", "Jipeng Fan" ], "n_citations": 18, "n_key_citations": 0, "score": 1 }, { "doc_id": "218832216", "title": "Deep Learning Assisted Predict of Lung Cancer on Computed Tomography Images Using the Adaptive Hierarchical Heuristic Mathematical Model", "abstract": "Lung cancer is known to be one of the most dangerous diseases which are the main reason for disease and death when diagnosed in primitive stages. Since lung cancer can only be detected more broadly after it spread to lung parts and the occurrence of lung cancer in the earlier stage is very difficult to predict. It causes a greater risk as radiologists and specialist doctors assess the existence of lung cancer. For this reason, it is important to build a smart and automatic cancer prediction system that is accurate and at which stage of cancer or to improve the accuracy of the previous cancer prediction that will help determines the type of treatment and treatment depth depending on the severity of the disease. In this paper, the Adaptive Hierarchical Heuristic Mathematical Model (AHHMM) has been proposed for the deep learning approach. To analyze deep learning based on the historical therapy scheme in the development of Non Small Cell Lung Cancers (NSCLC) automated radiation adaptation protocols that aim at optimizing local tumor regulation at lower rates of grade 2 RP2 radiation pneumonitis. Furthermore, the system proposed consists of several steps including acquiring the image, preprocessing, binarization, thresholding, and segmentation, extraction of features and detection of deep neural network (DNN) Segmentation of the lung CT image is carried out to extract any significant feature of a segmented image, and a specific feature extraction method is implemented. The test evaluation showed that the model proposed could detect 96.67 accuracy of the absence or presence of lung cancer.", "corpus_id": 218832216, "venue": "IEEE Access", "year": 2020, "author_names": [ "Heng Yu", "Zhiqing Zhou", "Qiming Wang" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "211058184", "title": "Artificial Intelligence Technique for Gene Expression by Tumor RNA Seq Data: A Novel Optimized Deep Learning Approach", "abstract": "Cancer is one of the most feared and aggressive diseases in the world and is responsible for more than 9 million deaths universally. Staging cancer early increases the chances of recovery. One staging technique is RNA sequence analysis. Recent advances in the efficiency and accuracy of artificial intelligence techniques and optimization algorithms have facilitated the analysis of human genomics. This paper introduces a novel optimized deep learning approach based on binary particle swarm optimization with decision tree (BPSO DT) and convolutional neural network (CNN) to classify different types of cancer based on tumor RNA sequence (RNA Seq) gene expression data. The cancer types that will be investigated in this research are kidney renal clear cell carcinoma (KIRC) breast invasive carcinoma (BRCA) lung squamous cell carcinoma (LUSC) lung adenocarcinoma (LUAD) and uterine corpus endometrial carcinoma (UCEC) The proposed approach consists of three phases. The first phase is preprocessing, which at first optimize the high dimensional RNA seq to select only optimal features using BPSO DT and then, converts the optimized RNA Seq to 2D images. The second phase is augmentation, which increases the original dataset of 2086 samples to be 5 times larger. The selection of the augmentations techniques was based achieving the least impact on manipulating the features of the images. This phase helps to overcome the overfitting problem and trains the model to achieve better accuracy. The third phase is deep CNN architecture. In this phase, an architecture of two main convolutional layers for featured extraction and two fully connected layers is introduced to classify the 5 different types of cancer according to the availability of images on the dataset. The results and the performance metrics such as recall, precision and F1 score show that the proposed approach achieved an overall testing accuracy of 96.90% The comparative results are introduced, and the proposed method outperforms those in related works in terms of testing accuracy for 5 classes of cancer. Moreover, the proposed approach is less complex and consume less memory.", "corpus_id": 211058184, "venue": "IEEE Access", "year": 2020, "author_names": [ "Nour Eldeen M Khalifa", "Mohamed Hamed N Taha", "Dalia Ezzat Ali", "Adam Slowik", "Aboul Ella Hassanien" ], "n_citations": 29, "n_key_citations": 1, "score": 0 }, { "doc_id": "231621798", "title": "A Visually Interpretable Deep Learning Framework for Histopathological Image Based Skin Cancer Diagnosis", "abstract": "Owing to the high incidence rate and the severe impact of skin cancer, the precise diagnosis of malignant skin tumors is a significant goal, especially considering treatment is normally effective if the tumor is detected early. Limited published histopathological image sets and the lack of an intuitive correspondence between the features of lesion areas and a certain type of skin cancer pose a challenge to the establishment of high quality and interpretable computer aided diagnostic (CAD) systems. To solve this problem, a light weight attention mechanism based deep learning framework, namely, DRANet, is proposed to differentiate 11 types of skin diseases based on a real histopathological image set collected by us during the last 10 years. The CAD system can output not only the name of a certain disease but also a visualized diagnostic report showing possible areas related to the disease. The experimental results demonstrate that the DRANet obtains significantly better performance than baseline models (i.e. InceptionV3, ResNet50, VGG16, and VGG19) with comparable parameter size and competitive accuracy with fewer model parameters. Visualized results produced by the hidden layers of the DRANet actually highlight part of the class specific regions of diagnostic points and are valuable for decision making in the diagnosis of skin diseases.", "corpus_id": 231621798, "venue": "IEEE Journal of Biomedical and Health Informatics", "year": 2021, "author_names": [ "Shancheng Jiang", "Huichuan Li", "Zhi Jin" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "235965415", "title": "Stacking and Chaining of Normalization Methods in Deep Learning Based Classification of Colorectal Cancer Using Gut Microbiome Data", "abstract": "Machine learning (ML) based detection of diseases using sequence based gut microbiome data has been of great interest within the artificial intelligence in medicine (AIM) community. The approach offers a non invasive alternative for colorectal cancer detection, which is based on stool samples. Considering limitations of existing methods in CRC detection, medical research has shown interest in the use of high throughput data to identify the disease. Owing to several limitations of conventional ML algorithms, deep learning (DL) methods are becoming more popular due to their outstanding performance in related fields. However, the performance of DL methods is affected by limitations such as dimensionality, sparsity, and feature dominance inherent in microbiome data. This research proposes stacking and chaining of normalization methods to address the limitations. While the stacking technique offers a robust, easy to use, and interpretable alternative for augmenting microbiome and other tabular data, the chaining technique is an alternative to data normalization that dynamically adjusts the underlying properties of data towards the normal distribution. The proposed techniques are combined with rank transformation and feature selection to further improve the performance of the model, with area under the curve (AUC) values between 0.857 to 0.987 using publicly available datasets.", "corpus_id": 235965415, "venue": "IEEE Access", "year": 2021, "author_names": [ "Mwenge Mulenga", "Sameem Abdul Kareem", "Aznul Qalid Md Sabri", "Manjeevan Seera" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "219969408", "title": "Unsupervised Learning of Deep Learned Features from Breast Cancer Images", "abstract": "Detecting cancer manually in whole slide images requires significant time and effort on the laborious process. Recent advances in whole slide image analysis have stimulated the growth and development of machine learning based approaches that improve the efficiency and effectiveness in the diagnosis of cancer diseases. In this paper, we propose an unsupervised learning approach for detecting cancer in breast invasive carcinoma (BRCA) whole slide images. The proposed method is fully automated and does not require human involvement during the unsupervised learning procedure. We demonstrate the effectiveness of the proposed approach for cancer detection in BRCA and show how the machine can choose the most appropriate clusters during the unsupervised learning procedure. Moreover, we present a prototype application that enables users to select relevant groups mapping all regions related to the groups in whole slide images.", "corpus_id": 219969408, "venue": "2020 IEEE 20th International Conference on Bioinformatics and Bioengineering (BIBE)", "year": 2020, "author_names": [ "Sanghoon Lee", "Colton Farley", "Simon Shim", "Yanjun Zhao", "Woo-Sik Choi", "Wook-Sung Yoo" ], "n_citations": 0, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "219918334", "title": "The associations of hub gene polymorphisms in PI3K/AKT/mTOR pathway and Schistosomiasis Japonica infection and hepatic fibrosis.", "abstract": "INTRODUCTION Increasing evidence shows that the PI3K/AKT/mTOR pathway can be activated by a variety of stimulus in immune cells. Schistosomiasis Japonica is a serious threat to human health in some lakes of China. METHODS We analyzed the potential associations between the hub gene (PTEN, mTOR, AKT1 and AKT2) polymorphisms of PI3K/AKT/mTOR pathway and S. japonica risk, including infection risk, as well as immunological hepatic fibrosis risk. An immune database named Database of Immune Cell Expression, Expression quantitative trait loci and Epigenomics (DICE) was used to analyze the expression profiles of the hub genes in 15 types of immune cells. RESULTS Of them, two SNPs rs2295080 (mTOR) and rs7254617 (AKT2) were found associated with the risk of infection and fibrosis. We also performed a multivariant Cox regression analysis and found that HBV infection may increase hepatic fibrosis in chronic schistosomiasis patients, instead of genetic polymorphisms on PI3K/AKT/mTOR pathway or any other factors. We also found the expressions of mTOR (RICTOR) and AKT2 in T cells were higher than those in monocyte cells. And, the expressions of PTEN, mTOR (RICTOR) and AKT1 reduced both in activated CD4 T cells and activated CD8 T cells. CONCLUSIONS We concluded that rs2295080 may be an important marker in the diagnosis of susceptibility to schistosomiasis infection. But HBV infection not rs2295080 could promote immunological liver damage with fibrosis in patients with chronic schistosomiasis infection.", "corpus_id": 219918334, "venue": "Infection, genetics and evolution journal of molecular epidemiology and evolutionary genetics in infectious diseases", "year": 2020, "author_names": [ "Qin Xiao", "Haibing Yu", "Xiao Zhu" ], "n_citations": 14, "n_key_citations": 0, "score": 1 }, { "doc_id": "210331033", "title": "Prevalence of significant hepatic fibrosis using magnetic resonance elastography in a health check up clinic population", "abstract": "Significant hepatic fibrosis is associated with higher mortality. However, data on the estimated prevalence of liver fibrosis in the general population are scarce.", "corpus_id": 210331033, "venue": "Alimentary pharmacology therapeutics", "year": 2020, "author_names": [ "Kyung A Kang", "Dae Won Jun", "Mi Sung Kim", "Heon-Ju Kwon", "Mindie H Nguyen" ], "n_citations": 10, "n_key_citations": 0, "score": 1 }, { "doc_id": "219589314", "title": "Ginsenoside Rg3 promotes regression from hepatic fibrosis through reducing inflammation mediated autophagy signaling pathway", "abstract": "Inflammation and autophagy occur during hepatic fibrosis development caused by various pathogens, and effectively curbing of autophage may delay the occurrence of hepatic fibrosis. The current study aimed to unravel the inhibitory effects of Ginsenoside Rg3 (G Rg3) on inflammation mediated hepatic autophagy to curb hepatic fibrosis caused by thioacetamide (TAA) induced subacute and chronic hepatic injury. TAA is mainly metabolized in the liver to cause liver dysfunction. After intraperitoneal injection of TAA for 4 or 10 weeks (TAA chronic mouse models) severe inflammatory infiltration and fibrosis occurred in the liver. Treatment with G Rg3 alleviated hepatic pathological changes and reversed hepatic fibrosis in the TAA chronic models with decreased deposition of collagen fibers, reduced expression of HSCs activation marker (a SMA) and reduced secretion of profibrogenic factors (TGF b1) G Rg3 decreased expressions of autophagy related proteins in mice of TAA chronic models. Notably, G Rg3 inhibited the survival of activated rat hepatic stellate cells (HSC T6) but had no cytotoxicity on human hepatocytes (L02 cell lines) G Rg3 dose dependently inhibited autophagy in vitro with less expression of p62 and fewer LC3a transformation into LC3b in inflammatory inducer lipopolysaccharide (LPS) induced rat HSC T6 cells. Furthermore, G Rg3 enhanced the phosphorylation of phosphatidylinositol 3 kinase (PI3K) and protein kinase B (Akt) in vivo and in vitro. Besides, mTOR inhibitor Rapamycin and PI3K inhibitors LY294002 were employed in LPS treated HSC T6 cell cultures to verify that Rg3 partially reversed the increase in autophagy in hepatic fibrosis in vitro. Taken together, G Rg3 exerted anti fibrosis effect through the inhibition of autophagy in TAA treated mice and LPS stimulated HSC T6 cells. These data collectively unravel that G Rg3 may serve a promising anti hepatic fibrosis drug.", "corpus_id": 219589314, "venue": "Cell Death Disease", "year": 2020, "author_names": [ "Xiang-xiang Liu", "Xiaojie Mi", "Zi Wang", "Ming Zhang", "Jing-Wu Hou", "Shuang Jiang", "Yingping Wang", "Chen Chen", "Wei Li" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "218558012", "title": "Congenital Hepatic Fibrosis in Children and Adults: Clinical Manifestations, Management, and Outcome Case Series and Literature Review", "abstract": "Background Congenital hepatic fibrosis is a hereditary fibropolycystic disease caused by ductal plate malformation. It is characterized by portal hypertension, but the manifestations, management, and outcome vary in children and adults. To raise awareness of medical staff, we have comprehensively compared the clinical features of congenital hepatic fibrosis between children and adults. Methods We retrospectively enrolled all patients diagnosed with congenital hepatic fibrosis at the Huashan Hospital from August 2015 to August 2017 and analyzed their familial, clinical, laboratory, imaging, treatment, and follow up data in detail. In addition, we reviewed cases with congenital hepatic fibrosis reported in the past 20 years in China and analyzed them according to the patients' age. Results A total of eight patients were diagnosed with congenital hepatic fibrosis in the study, including four children and four adults. The onset age of the children, who suffered from severe complications of portal hypertension and needed liver transplantation, ranged from 1 to 15 years old. The disorder developed in adults aged 26 to 60 years old. Three adults complained of recurrent abnormal liver function at the onset of illness, and they mainly received conservative treatments. The literature review included 30 children and 33 adults. In comparison, hepatomegaly was more common in children than in adults (57% vs. 21% p 0.004) Malformation of kidneys and bile duct abnormalities were common, and multisystem involvement included eyes, other digestive organs, and genital and central nervous systems. Conclusions Serious complications of portal hypertension developed in children requiring liver transplantation, while adults often had mild to moderate liver injuries upon onset. Adults with CHF varied a lot in clinical manifestations. Multiorgan involvement and unusual course are helpful to make a diagnosis. Timely histological assessment by liver biopsy and multidisciplinary cooperation are crucial for definitive diagnosis and early intervention.", "corpus_id": 218558012, "venue": "Gastroenterology research and practice", "year": 2020, "author_names": [ "Beidi Zhu", "Zunguo Du", "Zheng-xin Wang", "Yanping Li", "Jiming Zhang", "Haoxiang Zhu" ], "n_citations": 8, "n_key_citations": 1, "score": 0 }, { "doc_id": "218475530", "title": "Combined therapy with ligustrazine and paeonol mitigates hepatic fibrosis through destroying mitochondrial integrity of stellate cell.", "abstract": "This study investigates the inhibitory effect and potential mechanism of ligustrazine combined with paeonol on hepatic fibrosis, as to provide a new therapeutic strategy for clinical hepatic fibrosis. The degree of liver injury collagen deposition and inflammation was assessed by hematoxylin and eosin staining, Masson, Sirius red staining and biochemically serum analysis. ATP and ROS levels in each group were detected by chemical fluorescence method. The apoptotic rate was measured by Tunel assay. Mito Tacker fluorescence staining and mitochondrial DNA copy number were measured to observe the effect of ligustrazine or/and paeonol on mitochondrial function of hepatic stellate cell (HSC) The expression of relevant proteins and genes were evaluated by using immunofluorescence RT PCR and western blot. Ligustrazine or/and paeonol significantly improve the pathological changes in liver tissue induced by CCl4, however, they reduced the levels of liver and fibrosis markers in tissue and serum. ROS, NOX1 and NOX2 were significantly increased and GSH was decreased in HSC, with the intervention of Ligustrazine or/and paeonol. We further found that Ligustrazine or/and paeonol can effectively inhibit liver inflammation in vivo. The expression of TNF a, IL 6 and IL 8 was upregulated in HSC. Moreover, Ligustrazine or/and paeonol promotes apoptosis and inhibit proliferation of HSC. Additionally, the inhibiting effects of the drug on collagen deposition was due to the interference with the expression of signaling pathway related proteins and genes such as, MMPS, TGF b, PDGF and BMP 2 in HSC. Mitochondrial activity of HSC was inhibited by Ligustrazine or/and paeonol. The inhibitory effects of ligustrazine or/and Paeonol on mitochondrial function is partially balanced by mitochondrial protective agent SS 31. Ligustrazine combined with paeonol exerts significant anti hepatic fibrosis effect in vivo and in vitro. This may due to the disruption of HSC mitochondrial function, thereby induced promoting oxidative stress, apoptosis, inflammation and inhibiting the formation and deposition of extracellular matrix.", "corpus_id": 218475530, "venue": "American journal of translational research", "year": 2020, "author_names": [ "Desong Kong", "Li-ping Chen", "Weifang Huang", "Zili Zhang", "Lieming Wang", "Feng Zhang", "Shizhong Zheng" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "215794359", "title": "Sequential Combination of FIB 4 Followed by M2BPGi Enhanced Diagnostic Performance for Advanced Hepatic Fibrosis in an Average Risk Population", "abstract": "The fibrosis 4 (FIB 4) index is the most widely used estimated formula to screen for advanced hepatic fibrosis; however, it has a considerable intermediate zone. Here, we propose an algorithm to reduce the intermediate zone and improve the diagnostic performance of screening for advanced liver fibrosis by incorporating Mac 2 binding protein glycan isomer (M2BPGi) into a FIB 4 based screening strategy in an average risk group. Four hundred eighty eight healthy and chronic liver disease subjects were analyzed using a 1:1 propensity score matched for age and sex. Advanced liver fibrosis =F3) was defined by magnetic resonance elastography (MRE, =3.6 kPa) Classification tree analysis was employed to improve diagnostic performance using a combination of the FIB 4 index and M2BPGi. The median serum M2BPGi levels of healthy subjects, patients without advanced fibrosis, and those with the condition were 0.48, 0.94, and 2.93, respectively. The area under the receiver operating characteristic (AUROC) curve of M2BPGi (0.918) for advanced fibrosis was the highest compared to those of the FIB 4 index (0.887) APRI (0.873) and AST/ALT ratio (0.794) When M2BPGi was incorporated following the FIB 4 index, the sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) were 87.1% 82.5% 54.0% and 96.4% respectively. Moreover, 74.3% (133/179) of cases in the intermediate zone of the FIB 4 index avoided unnecessary referrals. Two step pathway (FIB 4 followed by M2BPGi) could reduce unnecessary referrals and/or liver biopsies in an average risk population.", "corpus_id": 215794359, "venue": "Journal of clinical medicine", "year": 2020, "author_names": [ "Mimi Kim", "Dae Won Jun", "Huiyul Park", "B -K Kang", "Yoshio Sumida" ], "n_citations": 10, "n_key_citations": 0, "score": 0 }, { "doc_id": "210947176", "title": "ASK1 inhibition reduces cell death and hepatic fibrosis in an Nlrp3 mutant liver injury model.", "abstract": "Hepatic inflammasome activation is considered a major contributor to liver fibrosis in NASH. Apoptosis signal regulating kinase 1 (ASK1) is an apical mitogen activated protein kinase that activates hepatic JNK and p38 to promote apoptosis, inflammation, and fibrosis. The aim of the current study was to investigate whether pharmacologic inhibition of ASK1 could attenuate hepatic fibrosis driven by inflammasome activation using gain of function NOD like receptor protein 3 (Nlrp3) mutant mice. Tamoxifen inducible Nlrp3 knock in (Nlrp3A350V/+CreT KI) mice and WT mice were administered either control chow diet or diet containing the selective ASK1 inhibitor GS 444217 for 6 weeks. Livers of Nlrp3 KI mice had increased inflammation, cell death, and fibrosis and increased phosphorylation of ASK1, p38, and c Jun. GS 444217 reduced ASK1 pathway activation, liver cell death, and liver fibrosis. ASK1 inhibition resulted in a significant downregulation of genes involved in collagen production and extracellular matrix deposition, as well as in a reduced hepatic TNF a expression. ASK1 inhibition also directly reduced LPS induced gene expression of Collagen 1A1 (Col1a1) in hepatic stellate cells isolated from Nlrp3 KI mice. In conclusion, ASK1 inhibition reduced liver cell death and fibrosis downstream of inflammatory signaling induced by NLRP3. These data provide mechanistic insight into the antifibrotic mechanisms of ASK1 inhibition.", "corpus_id": 210947176, "venue": "JCI insight", "year": 2020, "author_names": [ "Susanne Schuster-Gaul", "Lukas Jonathan Geisler", "Matthew D Mcgeough", "Casey D Johnson", "Anna Zagorska", "Li Li", "Alexander Wree", "Vivian Barry", "Igor Mikaelian", "Lily J Jih", "Bettina G Papouchado", "Grant R Budas", "Hal M Hoffman", "Ariel E Feldstein" ], "n_citations": 14, "n_key_citations": 0, "score": 1 }, { "doc_id": "212681919", "title": "Western diet induces severe nonalcoholic steatohepatitis, ductular reaction, and hepatic fibrosis in liver CGI 58 knockout mice", "abstract": "Humans and rodents with Comparative Gene Identification 58 (CGI 58) mutations manifest nonalcoholic fatty liver disease (NAFLD) Here we show that liver CGI 58 knockout (LivKO) mice fed a Western diet rapidly develop advanced NAFLD, including nonalcoholic steatohepatitis (NASH) and hepatic fibrosis. After 14 weeks of diet challenge, starting at 6 weeks of age, LivKO mice showed increased inflammatory cell infiltration and proinflammatory gene expression in the liver, which was associated with elevated plasma levels of aminotransferases. Hepatic ductular reactions, pericellular fibrosis, and bridging fibrosis were observed only in the LivKO mice. Consistently, the KO mice had a significant increase in hepatic mRNAs for fibrogenic genes. In addition, LivKO mice displayed massive accumulation of lipid droplets (LDs) in hepatocytes. LDs were also observed in the cholangiocytes of the LivKO mice, but not the floxed controls. Four of the five LD coat proteins, including perilipins 2, 3, 4, and 5, were increased in the CGI 58 KO liver. CRISPR/Cas9 mediated knockout of CGI 58 in Huh7 human hepatoma cells induced LD deposition and perilipin expression, suggesting a cell autonomous effect. Our findings establish the Western diet fed LivKO mice as an animal model of NASH and hepatic fibrosis. These animals may facilitate preclinical screening of therapeutic agents that counter against NAFLD progression.", "corpus_id": 212681919, "venue": "Scientific Reports", "year": 2020, "author_names": [ "Pan Yang", "Youlin Wang", "Weiqing Tang", "Weiwei Sun", "Yinyan Ma", "Shu Lin", "Jia Jing", "Long Jiang", "Hang Shi", "Zhiyuan Song", "Liqing Yu" ], "n_citations": 7, "n_key_citations": 0, "score": 1 }, { "doc_id": "213193543", "title": "Fugan Wan alleviates hepatic fibrosis by inhibiting ACE/Ang II/AT 1R signaling pathway and enhancing ACE2/Ang 1 7/Mas signaling pathway in hepatic fibrosis rat models.", "abstract": "Hepatic fibrosis is a repair and healing reaction for chronic injuries of liver. This study aimed to investigate protective effects of Fugan Wan (FGW) on hepatic fibrosis and clarify associated mechanisms. Hepatic fibrosis model was established by administrating dimethyl nitrosamine (DMN) to rats. Rats were divided into control, DMN and FGW groups. Haematoxylin and eosin (HE) staining was conducted to evaluate inflammatory response in hepatic fibrosis tissues. Sirius red staining was used to assess collagen disposition. Quantitative real time PCR (qRT PCR) was employed to detect antiotensin converting enzyme homologue 2 (ACE2) Mas, transforming growth factor b1 (TGF b1) mRNA. Western blot was used to examine collagen I, smooth muscle actin a (a SMA) angiotensin type 1 receptor (AT 1R) extra cellular regulated protein kinase (ERK) phosphorylated ERK (p ERK) c Jun and phosphorylated c Jun (p c Jun) expression. The results indicated that FGW significantly reduced inflammatory response of hepatic fibrosis tissues. FGW significantly decreased collagen deposition compared to that of DMN group (P 0.01) FGW significantly down regulated a SMA expression compared to that of DMN group (P 0.01) FGW significantly decreased AT 1R levels compared to that of DMN group (P 0.01) Comparing with DMN group, ACE2 and Mas mRNA levels were significantly increased in FGW group (P 0.01) FGW significantly down regulated p c Jun and p ERK1/2 compared to DMN group (P 0.01) GFW significantly inhibited compared to DMN group (P 0.01) In conclusion, FGW alleviated hepatic fibrosis by inhibiting ACE/Ang II/AT 1R signaling and enhancing ACE2/Ang 1 7/Mas signaling pathway in hepatic fibrosis rat models.", "corpus_id": 213193543, "venue": "American journal of translational research", "year": 2020, "author_names": [ "Shu Li", "Wei Zhao", "Yan-yan Tao", "Cheng-hai Liu" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "214731008", "title": "Alamandine attenuates hepatic fibrosis by regulating autophagy induced by NOX4 dependent ROS.", "abstract": "Angiotensin II (Ang II) has been reported to aggravate hepatic fibrosis by inducing NADPH oxidase (NOX) dependent oxidative stress. Alamandine protects against fibrosis by counteracting Ang II via the MrgD receptor, though the effects of alamandine on hepatic fibrosis remain unknown. Autophagy activated by reactive oxygen species (ROS) is a novel mechanism of hepatic fibrosis. However, whether autophagy is involved in the regulation of Ang II induced hepatic fibrosis still requires investigation. We explored the effect of alamandine on hepatic fibrosis via regulation of autophagy by redox balance modulation. In vivo, alamandine reduced ccl4 induced hepatic fibrosis, H2O2 content, protein levels of NOX4 and autophagy impairment. In vitro, Ang II treatment elevated NOX4 protein expression and ROS production along with upregulation of the ACE/Ang II/AT1R axis. These changes resulted in the accumulation of impaired autophagosomes in hepatic stellate cells (HSCs) Treatment withtheNOX4 inhibitor VAS2870, ROS scavenger N acetylcysteine, and NOX4 small interfering RNA (siRNA) inhibited Ang II induced autophagy and collagen synthesis. Alamandine shifted the balance of RAS toward the ACE2/alamandine/MrgD axis, and inhibited both Ang II induced ROS and autophagy activation, leading to attenuation of HSCs migration or collagen synthesis. In summary, alamandine attenuated liver fibrosis by regulating autophagy induced by NOX4 dependent ROS.", "corpus_id": 214731008, "venue": "Clinical science", "year": 2020, "author_names": [ "Anni Lou", "Guo zhen Wang", "Ye Hu", "Yijie Zhang", "Weichang Huang" ], "n_citations": 8, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "212820947", "title": "Correlation entre experience collaborateur et gestion des talents", "abstract": "Avec un marche du travail toujours plus concurrentiel ainsi que des salaries de plus en plus mobiles, il est complexe aujourd'hui pour les entreprises de gerer leurs ressources humaines respectives actuels et futurs. Ainsi, plus que jamais les entreprises cherchent a mettre en place des actions pour attirer des candidats talentueux et surtout pour les fideliser. Ceci etant, bien qu'il existe de multiples theories, aucune ne se revele etre la recette miracle pour atteindre l'objectif espere. En pratique, certaines privilegient l'appat financier pour que le collaborateur s'installe confortablement au sein de l'entreprise lui permettant de se projeter avec de grandes perspectives futures pendant que d'autres entreprises travaillent davantage sur l'experience du collaborateur afin qu'elle soit unique, personnalisee et engageante sur le court, le moyen et le long terme. L'auteur a souhaite orienter ses recherches sur la seconde philosophie celle sur l'experience collaborateur car ce concept est aujourd'hui fortement populaire tout en etant fort recent et donc encore peu etudie. Qui plus est, l'auteur a eu l'opportunite d'effectuer une enquete de terrain de 3 mois au sein de l'organisation Carrefour Belgium et plus specifiquement au sein du departement Talent ou l'experience collaborateur est au centre des interets et des preoccupations. A travers la theorie et la pratique, il a ete remarque au combien le role de l'experience collaborateur dans l'attraction de l'entreprise pour le collaborateur actuel ou le collaborateur futur etait primordial et que celui ci representait un levier strategique indeniable pour permettre a l'organisation d'avoir des collaborateurs epanouis, heureux, et motives. Au sein de ce memoire, l'auteur identifie a travers un melange de theorie et d'illustrations concretes de quelle maniere les entreprises peuvent renforcer leur experience collaborateur sur le terrain avec des actions tant pour attirer le collaborateur que pour l'engager et le fideliser il a ete remarque au combien ces actions sont diversifiees car elles concernent aussi bien l'image de l'entreprise que les perspectives d'evolution de carriere du collaborateur ou bien encore le bien etre general et individuel. Ceci etant, toutes ses actions forment un exemple concret de ligne de conduite de gestion de l'experience collaborateur avec comme finalite quasiment unique attirer et retenir le collaborateur et plus specifiquement le talent.", "corpus_id": 212820947, "venue": "", "year": 2019, "author_names": [ "B Lambert" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "165728217", "title": "L'experience collaborateur Faites de vos employes les premiers fans de l'entreprise", "abstract": "Comment attirer et fideliser les talents, maintenir l'engagement des collaborateurs et soigner sa reputation sur les reseaux sociaux Aujourd'hui, les entreprises n'ont plus le choix et doivent proposer une nouvelle experience au travail. Une experience positive vecue en interne est un avantage competitif majeur et ce que l'on appelle desormais l' Experience Collaborateur est devenue aussi strategique pour le business que l' experience client De nombreuses organisations, parmi les plus innovantes, l'ont deja mis en oeuvre et en temoignent dans ce livre c'est le cas d'Airbnb, BlaBlaCar, Orange ou encore Leroy Merlin. Cet ouvrage s'adresse a tous ceux qui ont envie de faire vivre a leurs equipes une aventure epanouissante au sein d'un environnement de travail intelligent, humain, mieux connecte et plus collaboratif. En plus des bonnes pratiques, on y trouve egalement des methodes pour initier cette demarche, la deployer et en mesurer l'impact. A la croisee de la transformation digitale, de l'entreprise du XXIe siecle et des nouveaux codes du monde du travail, une approche novatrice pour accompagner la mutation des entreprises", "corpus_id": 165728217, "venue": "", "year": 2017, "author_names": [ "Corinne Samama" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "191990981", "title": "Boostez l'experience collaborateur La methode pour attirer, engager, fideliser en proposant une experience memorable Ed. 1", "abstract": "REPRENEZ LA MAIN ET BOOSTEZ L'EXPERIENCE QUE VIVENT VOS COLLABORATEURS Des demain, grace a la methode ExC, construisez votre plan d'actions via 5 DIMENSIONS pour faconner votre Experience Collaborateur 1 AUTO EVALUATION pour determiner la maturite ExC de votre organisation 28 BONNES PRATIQUES de dirigeants et de DRH pour s'inspirer 1 SITE INTERNET pour prolonger l'experience de lecture www.experience collaborateur le livre.fr \"Les auteures auraient pu se contenter de nous decrire les differentes dimensions de l'Experience Collaborateur, nous fournir une cartographie d'outils innovants et tendances, ainsi qu'un listing de bonnes pratiques facon benchmark, mais elles vont plus loin en nous permettant de nous approprier leur methode et construire notre propre plan d'actions.\" Franck Papazian, President de MediaSchool Group, CB News et INfluencia \"Avec l'Experience Collaborateur on ne veut plus de transactionnel, on veut du conversationnel, et c'est tout le sujet de ce livre\" Jean Baptiste Audrerie, Chef de pratique techno et transformation RH, psychologue organisationnel, MBA. Auteur du blog d'anticipation RH \"Futurs Talents\"", "corpus_id": 191990981, "venue": "", "year": 2018, "author_names": [ "Myriam Lepetit-Briere", "Severine Loureiro" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "213888136", "title": "L'experience client en pratique Du design de service a l'accompagnement du changement Ed. 1", "abstract": "L'experience client ne se limite pas a simplifier les parcours et a reenchanter les interactions. C'est une discipline strategique qui accompagne les entreprises dans leur recentrage sur le client et le collaborateur en rehumanisant les pratiques. De nature ecosystemique et transversale, elle bouscule les organisations en silos et les modeles hierarchiques descendants. Deployee de maniere rigoureuse, elle signe la reussite des entreprises audacieuses sur des marches matures et satures. Deja auteures de reference dans le domaine, Laurence Body et Sylvie Daumal proposent ici un veritable guide methodologique pour engager les collaborateurs dans la demarche, co concevoir les futures experiences a partir de l'observation et passer a l'echelle afin de deployer les futurs parcours dans le respect de chacun. Les 4 temps de la methodologie, de l'exploration au passage a l'echelle. 41 outils et methodes pour mettre en pratique la demarche. 7 cas d'etude. Cette demarche centree sur l'humain suppose un etat d'esprit creatif et collaboratif souvent eloigne de la culture des organisations. L'experience client en pratique leur ouvre la voie vers une transformation en profondeur, dans une demarche agile, iterative et apprenante, dans laquelle la qualite de l'experience collaborateur et celle de l'experience client se repondent en miroir.", "corpus_id": 213888136, "venue": "", "year": 2019, "author_names": [ "Sylvie Daumal", "Laurence Body" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "159413033", "title": "Engagement 4.0 Pour une experience durable au travail, avec et par les collaborateurs", "abstract": "Experience collaborateur, entreprise liberee, bonheur au travail, prise de pouvoir par les millenials. Face aux defis technologiques et societaux qui redefinissent le monde du travail, ce livre trace un chemin vers un engagement durable tant individuel qu'organisationnel, loin des modes ephemeres et Ted Talks des gourous du management. A partir d'un modele couvrant les dimensions individuelles de l'engagement des plus desengages aux plus sur engages offrant au lecteur la possibilite d'evaluer son propre profil, l'auteur propose un cadre strategique analysant le role des acteurs engageants (organisation, leaders) et engages (collaborateurs, equipes) Capitalisant sur son experience internationale, une solide recherche et des concepts tires de multiples disciplines, l'auteur dessine un ecosysteme militant pour un engagement avec et par les collaborateurs, depassant les experiences ephemeres qui ne susciteraient que des consommateurs internes. La force du propos est une vision holistique de l'engagement, un modele universel unique en France, pratique et innovant, sans tabou, guide par des considerations humanistes et multiculturelles, bousculant nos certitudes relatives au developpement des organisations et des hommes. Cet ouvrage s'adresse a tous ceux, collaborateurs ou decideurs, qui croient que dans ce monde disruptif la relation au travail ne doit plus etre un asservissement mais peut offrir une liberation, un Engagement 4.0 pour un voyage vers soi.", "corpus_id": 159413033, "venue": "", "year": 2018, "author_names": [ "Bernard Coulaty" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "79151642", "title": "Comment une experience innovante de psychiatrie citoyenne est devenue un centre OMS de reference pour la sante mentale dans la communaute", "abstract": "Au debut des annees 70, un secteur de psychiatrie generale de l'hopital psychiatrique d'Armentieres (aujourd'hui etablissement public de sante mentale Lille Metropole) a commence a changer radicalement son paradigme de soins. En 3 decennies, ce secteur est passe de l'asile a la Cite, de l'hospitalisation psychiatrique comme seule reponse de soins, a l'integration des soins dans la communaute et au service a la personne via des equipes mobiles et du soin a domicile. Cela a ete possible grace a l'implication systematique des elus locaux, et au fondement theorique et pratique de la citoyennete pour tous. Cette experience a ete conceptualisee sous le nom de psychiatrie citoyenne. En 2001, cette experience a ete reconnue comme pilote de l'evolution des soins psychiatrique par l'Organisation mondiale de la sante (OMS) ce qui a permis a l'EPSM Lille Metropole de devenir le siege du Centre collaborateur de OMS pour la recherche et la formation en sante mentale (CCOMS, Lille France) Sa mission est de promouvoir, en France et a l'etranger, les innovations en sante mentale communautaire, et de developper des recherches et des formations sur ce theme. Depuis 2013, le CCOMS est soutenu dans ses actions par un groupement de cooperation sanitaire reunissant 15 etablissements de sante mentale publics et prives francais, en lien direct avec l'OMS Geneve et l'OMS Europe, et partie integrante de l'equipe de recherche ECEVE INSERM U1123. Nous presentons dans cet article les recherches actions que mene le Centre depuis 20 ans et la maniere dont il a pu influencer les politiques de sante mentale au niveau national et international.[Resume d'editeur]", "corpus_id": 79151642, "venue": "", "year": 2016, "author_names": [ "Roelandt Jean-Luc" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "191613482", "title": "Tete a tete avec un androide. Production des corps et troubles ontologiques dans une experience d'interaction hommes robot", "abstract": "Cet article s'inscrit dans le sillage d'une investigation ethnographique d'environ deux ans aupres d'une equipe de recherche en robotique oeuvrant a l'etude d'interactions experimentales entre des humains et un robot humanoide, iCub, au corps fabrique a l'image d'un enfant de trois ans. Tantot corps mecanique inerte trop absent, tantot etre aux mouvements saccades confondants, ni objet, ni sujet, iCub interroge les chercheurs d'un laboratoire, espace technologise ou se nouent domestication des corps humains et actualisation du robot comme collaborateur social Ce laboratoire sera ici apprehende comme une fabrique des corps et des savoirs mettant a l'epreuve nos categorisations ontologiques. En effet, pour l'heure, l'etude des processus praxiques et kinesiques qu'engage l'interaction homme robot en ce qu'elle permet la mise a jour d'une production scientifique des corps de l'humain par le robot, et inversement, restent a approfondir pour comprendre les transformations contemporaines d'une certaine acceptation de la condition humaine, des corps et du vivant.", "corpus_id": 191613482, "venue": "", "year": 2014, "author_names": [ "Stephane Marpot" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "162395823", "title": "DEVENIR PROFESSIONNEL DE LA POLITIQUE. MILITANT ET COLLABORATEUR POLITIQUE", "abstract": "Cet article s'interesse aux conditions d'entree en politique d'une generation de jeunes militants, en etudiant leur professionnalisation politique dans des fonctions de collaborateur politique au cours des dernieres annees. Il montre que ce type d'entree en politique depend non seulement des parcours militants mais aussi scolaires. Car, si devenir collaborateur permet aux jeunes militants de convertir leur experience militante dans une activite professionnelle, cette orientation se fait souvent a des moments d'echecs scolaires, d'incertitudes quant a la suite des etudes, et de doutes sur la valeur des ressources scolaires.", "corpus_id": 162395823, "venue": "", "year": 2009, "author_names": [ "Sebastien Michon" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "192731625", "title": "Une experience de formation et d'accompagnement d'un EHPAD du groupe Korian", "abstract": "Le groupe Korian a choisi des 2006 de proposer a l'ensemble de ses Ehpad la formation Humanitude C'est un des points cles de sa politique de soins. Korian souhaite promouvoir la formation continue du personnel, en particulier celle des soignants, aux methodes les plus recentes en matiere de soins, d'ecoute et d'approche relationnelle, pour que l'attention portee au resident soit la priorite quotidienne de chaque collaborateur. Rose Marie Van Lerberghe, presidente du directoire, souligne que cette demarche englobe a la fois un processus de formation et un processus de reorganisation pour penser les conditions efficaces de realisation d'un milieu de vie adapte a chacun, et particulierement aux residents atteints d'une maladie d'Alzheimer ou apparentee. Apres avoir forme et accompagne 101 etablissements, nous vous proposons de nous interroger sur les conditions favorables et les difficultes rencontrees. Nous aborderons enfin ce qui a change concretement au coeur des etablissements en donnant la parole aux soignants.", "corpus_id": 192731625, "venue": "", "year": 2010, "author_names": [ "Elisabeth Bonjour" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "162631819", "title": "S'engager a titre de collaborateur benevole dans un projet de recherche participative les motivations d'un groupe d'aines", "abstract": "Cet article rapporte les resultats d'une etude visant l'examen des motivations a la source de l'implication d'aines au sein d'un projet national de recherche action. Les donnees ont ete recueillies au moyen d'entrevues en profondeur aupres d'aines (n=5) engages dans le volet montrealais du projet. Les resultats revelent six grandes classes de motivations changer les choses, utiliser ses habiletes et son experience, travailler en equipe, faire preuve d'altruisme, conserver un statut et un role dans la societe et, enfin, agir en lien avec sa philosophie de vie. Ces resultats corroborent en partie ceux qui ont ete presentes dans les etudes anterieures. Cependant, les motivations liees a la poursuite d'activites et de facons de faire experimentees dans le travail qui precede la retraite ressortent davantage. La discussion aborde les strategies a privilegier pour faciliter l'implication d'aines en recherche action.", "corpus_id": 162631819, "venue": "", "year": 2007, "author_names": [ "Lucien Richard", "Janie Gagne", "Pascale Lehoux" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "225417243", "title": "A VERSATILE UAV NEAR REAL TIME MAPPING SOLUTION FOR DISASTER RESPONSE CONCEPT, IDEAS AND IMPLEMENTATION", "abstract": "Abstract. In recent years, the proliferation and further development of unmanned aerial vehicles (UAVs) led to a great number of key technologies, advances and opportunities especially in the realm of time critical applications. UAVs as a platform provide a unique combination of flexibility, affordability and sensor technology which enables the design of cost effective and intriguing services particularly for disaster response. This contribution presents a concept for UAV based near real time mapping system for disaster relief to provide decision making support for first responders particularly for possible disaster scenarios in Austria. We outline our system concept and its respective architecture, discuss requirements from a stakeholder perspective as well as legal regulations and initiatives at an EU level. In the methodology section of this paper, the preliminary data processing pipeline with respect to the near real time orthomosaic generation and the semantic segmentation network are presented. Lastly, first experimental results of the pipeline are shown, and further advances are discussed.", "corpus_id": 225417243, "venue": "", "year": 2020, "author_names": [ "P Fanta-jende", "Daniel Steininger", "Felix Bruckmuller", "Christoph Sulzbachner" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "232013760", "title": "RGB D Railway Platform Monitoring and Scene Understanding for Enhanced Passenger Safety", "abstract": "Automated monitoring and analysis of passenger movement in safety critical parts of transport infrastructures represent a relevant visual surveillance task. Recent breakthroughs in visual representation learning and spatial sensing opened up new possibilities for detecting and tracking humans and objects within a 3D spatial context. This paper proposes a flexible analysis scheme and a thorough evaluation of various processing pipelines to detect and track humans on a ground plane, calibrated automatically via stereo depth and pedestrian detection. We consider multiple combinations within a set of RGBand depth based detection and tracking modalities. We exploit the modular concepts of Meshroom [2] and demonstrate its use as a generic vision processing pipeline and scalable evaluation framework. Furthermore, we introduce a novel open RGB D railway platform dataset with annotations to support research activities in automated RGB D surveillance. We present quantitative results for multiple object detection and tracking for various algorithmic combinations on our dataset. Results indicate that the combined use of depth based spatial information and learned representations yields substantially enhanced detection and tracking accuracies. As demonstrated, these enhancements are especially pronounced in adverse situations when occlusions and objects not captured by learned representations are present.", "corpus_id": 232013760, "venue": "ICPR Workshops", "year": 2020, "author_names": [ "M Wallner", "Daniel Steininger", "Verena Widhalm", "Matthias Schorghuber", "Csaba Beleznai" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "68256609", "title": "Human Detection in Crowded Situations by Combining Stereo Depth and Deeply Learned Models", "abstract": "Human detection in crowded situations represents a challenging task in many practically relevant scenarios. In this paper we propose a passive stereo depth based human detection scheme employing a hierarchically structured tree of learned shape templates for delineating clusters corresponding to humans. In order to enhance the specificity of the depth based detection approach towards humans, we also incorporate a visual object recognition modality in form of a deeply trained model. We propose a simple way to combine the depth and appearance modalities to better cope with complex effects such as heavily occluded and small sized humans, and clutter. Obtained results are analyzed in terms of improvements and shortcomings introduced by the individual detection modalities. Our proposed combination achieves a good accuracy at a decent computational speed in difficult scenarios exhibiting crowded situations. Hence in our view, the presented concepts represent a detection scheme of practical relevance.", "corpus_id": 68256609, "venue": "Cognitive Internet of Things", "year": 2019, "author_names": [ "Csaba Beleznai", "Daniel Steininger", "Elisabeth Broneder" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "30782393", "title": "Temperature dependence of Andreev spectra in a superconducting carbon nanotube quantum dot", "abstract": "We gratefully acknowledge financial support from the Deutsche Forschungsgemeinschaft within GRK 1570, SFB 689, and the E. Noether program (Hu 1808 1) from Spanish MINECO through Grant No. FIS2011 26516, and from the EU FP7 Project SE2ND", "corpus_id": 30782393, "venue": "", "year": 2014, "author_names": [ "Amit Kumar", "Medhanie Gaim", "Daniel Steininger", "Alfredo Levy Yeyati", "Alvaro Martin-Rodero", "A K Huettel", "Christoph Strunk" ], "n_citations": 36, "n_key_citations": 0, "score": 0 }, { "doc_id": "114575165", "title": "Shot Noise Detection in Carbon Nanotube Quantum Dots", "abstract": "Shot noise investigations in mesoscopic conductors open up a great number of new possibilities for the study of charge carrier statistics as an independent means next to standard dc transport measurements. The present work was aiming at the establishment of a state of the art setup for electrical shot noise detection at low temperatures. Our noise detection system was planned as a twofold amplifier setup based on resonant enhancement of current fluctuations using passive RLC circuits close to the sample stage and distributed two stage amplifier chains including pre amplifiers at cryogenic temperatures. Electrical transport spectroscopy on a carbon nanotube (CNT) based quantum dot device exhibits a peculiar excitation spectrum which we supposed to be of non purely electronic nature. Signatures of electron phonon coupling in the transport were analyzed within the Franck Condon model and confirmed independently by the examination of the Fano factor. Together with numerical model calculations including vibronic modes in a CNT, we were able to identify bosonic excitations as origin of super Poissonian noise enhancements in our device as a complementary method next to standard conductance measurements. Having the Fano factor as an additional tool enables a large diversity of noise experiments in the future.", "corpus_id": 114575165, "venue": "", "year": 2017, "author_names": [ "Daniel Steininger" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "57200887", "title": "Correlated Motion Based Crowd Analysis in Queueing Situations", "abstract": "Crowd analysis by automated visual surveillance represents a challenging task in many practically relevant scenarios. In this paper we address the problem of capturing relevant correlated movement within a line formed by waiting pedestrians to estimate the time needed for the last person to reach the queue front. To obtain a waiting time estimate we propose to solve two interlinked problems: queue shape delineation and motion characterization estimating the propagation velocity along the segmented queue. Accordingly, we present a scheme to reliably segment the queue shape by finding and refining an optimum path over time. The optimality condition refers to minimizing its length while maximizing its overlap with observed correlated motion patterns. To capture the collective motion of the crowd within the queue we employ a deformable chain structure to temporally aggregate the relevant short term forward movement by tracking. The resulting tracked chain structure is used to generate a mean forward propagation velocity estimate. The presented approach represents a general analysis scheme, requiring only a set of tracked pedestrians on a calibrated ground plane at every frame. We validate our proposed scheme on two real datasets with time varying queue structures. Based on a comparison to manually set ground truth, obtained results show that queue delineation and waiting time estimates are reliable, can cope with motion clutter and well characterize the waiting behavior and its temporal evolution.", "corpus_id": 57200887, "venue": "2017 4th IAPR Asian Conference on Pattern Recognition (ACPR)", "year": 2017, "author_names": [ "Csaba Beleznai", "Andreas Zweng", "Daniel Steininger" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "8946460", "title": "Transversal magnetic anisotropy in nanoscale PdNi strips", "abstract": "We investigate submicron ferromagnetic PdNi thin film strips intended as contact electrodes for carbon nanotube based spintronic devices. The magnetic anisotropy and micromagnetic structure are measured as function of temperature. Contrary to the expectation from shape anisotropy, magnetic hysteresis measurements of Pd0.3Ni0.7 on arrays containing strips of various width point towards a magnetically easy axis in the sample plane, but transversal to the strip direction. Anisotropic magnetoresistance measured on individual Pd0.3Ni0.7 contact strips and magnetic force microscopy images substantiate that conclusion.", "corpus_id": 8946460, "venue": "", "year": 2013, "author_names": [ "Daniel Steininger", "A K Huettel", "Mario Ziola", "Matthias Kiessling", "Matthias Sperl", "Gunther Bayreuther", "Christoph Strunk" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "31357113", "title": "Transport across a carbon nanotube quantum dot contacted with ferromagnetic leads: Experiment and nonperturbative modeling", "abstract": "We present measurements of tunneling magnetoresistance (TMR) in single wall carbon nanotubes attached to ferromagnetic contacts in the Coulomb blockade regime. Strong variations of the TMR with gate voltage over a range of four conductance resonances, including a peculiar double dip signature, are observed. The data are compared to calculations in the \"dressed second order\" (DSO) framework. In this nonperturbative theory, conductance peak positions and linewidths are affected by charge fluctuations incorporating the properties of the carbon nanotube quantum dot and the ferromagnetic leads. The theory is able to qualitatively reproduce the experimental data.", "corpus_id": 31357113, "venue": "", "year": 2015, "author_names": [ "Alois Dirnaichner", "M Grifoni", "Andreas Prufling", "Daniel Steininger", "Andreas K Huttel", "Christoph Strunk" ], "n_citations": 8, "n_key_citations": 0, "score": 0 }, { "doc_id": "139583037", "title": "Magnetic characterization of PdNi contact electrodes", "abstract": "", "corpus_id": 139583037, "venue": "", "year": 2012, "author_names": [ "Daniel Steininger", "A K Huettel", "Mario Ziola", "Matthias Kiessling", "Matthias Sperl", "Gunther Bayreuther", "Christoph Strunk" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "3036659", "title": "Thermally induced subgap features in the cotunneling spectroscopy of a carbon nanotube", "abstract": "We report on the nonlinear cotunneling spectroscopy of a carbon nanotube quantum dot coupled to Nb superconducting contacts. Our measurements show rich subgap features in the stability diagram which become more pronounced as the temperature is increased. Applying a transport theory based on the Liouville von Neumann equation for the density matrix, we show that the transport properties can be attributed to processes involving sequential as well as elastic and inelastic cotunneling of quasiparticles thermally excited across the gap. In particular, we predict thermal replicas of the elastic and inelastic cotunneling peaks, in agreement with our experimental results.", "corpus_id": 3036659, "venue": "", "year": 2014, "author_names": [ "S Ratz", "Andrea Donarini", "Daniel Steininger", "T Geiger", "Arvind Kumar", "Andreas K Huttel", "Christoph Strunk", "M Grifoni" ], "n_citations": 6, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "216446243", "title": "Pengaruh modal manusia terhadap orientasi pasar dan kinerja UMKM", "abstract": "Penelitian ini difokuskan pada pelaku UMKM Songkok di Kabupaten Gresik, untuk menguji pengaruh modal manusia terhadap orientasi pasar, pengaruh modal manusia terhadap kinerja UMKM, dan pengaruh orientasi pasar terhadap kinerja UMKM. Penelitian ini mengolah data primer yang diperoleh menggunakan kuesioner yang dibagikan kepada 163 pelaku UMKM. Sampel penelitian dipilih menggunakan metode penyampelan probabilitas dan metode yang digunakan dalam penarikan sampel probabilitas dalam penelitian ini adalah penyampelan klaster. Alat analisis yang digunakan adalah Partial Least Square (PLS) Hasil penelitian menunjukkan bahwa modal manusia berpengaruh terhadap orientasi pasar, modal manusia berpengaruh terhadap kinerja UMKM, dan orientasi pasar berpengaruh terhadap kinerja UMKM.", "corpus_id": 216446243, "venue": "Jurnal Ekonomi dan Bisnis", "year": 2020, "author_names": [ "Ina Syarifah", "Muhammad Kholid Mawardi", "Mohammad Iqbal" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "226161157", "title": "PENGARUH KESIAPAN MODAL INFORMASI TERHADAP KINERJA BISNIS UMKM JAWA TIMUR MELALUI MEDIASI ORIENTASI PASAR ONLINE", "abstract": "Tujuan dari penelitian ini adalah untuk meneliti pengaruh kesiapan modal informasi terhadap kinerja bisnis UMKM di Jawa Timur. Selain itu, penelitian ini juga meneliti apakah orientasi pasar online memediasi hubungan kesiapan modal informasi dan kinerja bisnis. Penelitian ini menggunakan pendekatan kuantitatif dan partial least squares structural equation modeling (PLS SEM) digunakan untuk menguji hipotesis. Kuesioner online dan offline dengan Skala Likert 5 poin telah dikumpulkan dari 181 UMKM yang menjadi binaan Dinas Koperasi dan UMKM Provinsi Jawa Timur dengan metode purposive sampling. Penelitian ini menggunakan pendekatan model mediasi untuk menguji efek tidak langsung dari orientasi pasar online. Hasil menunjukkan bahwa kesiapan modal informasi secara langsung dan positif mempengaruhi kinerja bisnis UMKM di Jawa Timur. Analisis lebih lanjut membuktikan bahwa orientasi pasar online memediasi sebagian hubungan kesiapan modal informasi dan kinerja bisnis. Penelitian ini menunjukkan bahwa UMKM harus memiliki kesiapan dalam modal informasi dan memiliki orientasi pasar online sehingga dapat meningkatkan kinerja bisnis. Penelitian ini berfokus pada UMKM di Jawa Timur sehingga harus berhati hati ketika menggeneralisasikannya ke kota kota lain dan ke sektor bisnis lain. Penelitian ini menggunakan cross sectional survey, sehingga mungkin tidak mewakili kondisi jangka panjang. Hasil penelitian ini menunjukkan bahwa UMKM harus memiliki kesiapan informasi modal untuk memproses informasi transaksional, menganalisis informasi, dan mengubah bisnis mereka. Penelitian ini merupakan penelitian pertama yang meneliti tiga konstruk kesiapan modal informasi, orientasi pasar online, dan kinerja bisnis pada UMKM Jawa Timur.", "corpus_id": 226161157, "venue": "", "year": 2020, "author_names": [ "Gabriella Monica Gunawan" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "229047864", "title": "Pengaruh Orientasi Pasar Dan Orientasi Kewirausahaan Terhadap Kinerja Pemasaran Melalui Inovasi Produk Sebagai Variabel Intervening (Studi Pada Umkm Kuningan Juwana Kabupaten Pati)", "abstract": "The development of Micro, Small, and Medium Enterprises (MSMEs) in Central Java Province has increased every year. The increase in number was certainly driven by several parties because MSMEs functioned as absorbing labor and promoting community welfare. As one type of MSMEs in Pati Regency, Kuningan Juwana SMESs has produced various brass products which are expected to be able to innovate products so that they are not inferior to increasingly fierce competition and can market their products to the full. The purpose of this study was to determine the effect of market orientation and entrepreneurial orientation on marketing performance through product innovation. The number of samples is 53 respondents with a sampling technique using purposive sampling technique. This type of research is explanatory research. This research uses the software tools SmartPLS 3.2.8 for Windows. The results showed that market orientation had a positive and significant effect on marketing performance, entrepreneurial orientation had a negative and not significant effect on marketing performance. In addition, market orientation has a negative and not significant effect on product innovation while entrepreneurial orientation has a positive and significant effect on product innovation. Perkembangan Usaha Mikro, Kecil dan Menengah (UMKM) Provinsi Jawa Tengah setiap tahunnya mengalami peningkatan. Peningkatan jumlah tersebut tentunya didorong oleh beberapa pihak dikarenakan UMKM berfungsi sebagai penyerap tenaga kerja dan pendorong kesejahteraan masyarakat. Sebagai salah satu jenis UMKM di Kabupaten Pati, UMKM Kuningan Juwana telah menghasilkan berbagai produk kuningan yang diharapkan mampu melakukan inovasi produk sehingga tidak kalah dengan pesaingan yang semakin ketat dan dapat memasarkan produknya secara maksimal. Tujuan penelitian ini untuk mengetahui pengaruh orientasi pasar dan orientasi kewirausahaan terhadap kinerja pemasaran melalui inovasi produk. Jumlah sampel yaitu 53 responden dengan teknik pengambilan sampel menggunakan teknik purposive sampling Tipe penelitian ini adalah explanatory research Penelitian ini menggunakan alat bantu software SmartPLS 3.2.8 for Windows Hasil penelitian menunjukkan bahwa orientasi pasar berpengaruh positif dan signifikan terhadap kinerja pemasaran, orientasi kewirausahaan berpengaruh negatif dan tidak signifikan terhadap kinerja pemasaran. Selain itu, orientasi pasar berpengaruh negatif dan tidak signifikan terhadap inovasi produk sedangkan orientasi kewirausahaan berpengaruh positif dan signifikan terhadap inovasi produk.", "corpus_id": 229047864, "venue": "", "year": 2020, "author_names": [ "Fipit Alam Pratama Widian Sari", "Naili Farida" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "214431359", "title": "PENGARUH ORIENTASI KEWIRAUSAHAAN DAN ORIENTASI PASAR TERHADAP KINERJA UMKM SEBUAH STUDI PADA INDUSTRI FASHION DI KABUPATEN LABUHANBATU DAN KABUPATEN LABUHANBATU SELATAN", "abstract": "Entrepreneurial orientation and market orientation are very importantthat must be owned by an entrepreneur in order to succeed in the business Th is study aims to determine and to know the influence of entrepreneurial orientation and market orientation on the performance of SMEs in the f ashion sector in Labuhanbatu Regency and Labuhanbatu Selatan Regency, North Sumatra Province. This study involved 205 SMEs as the owners of the fashion industry in Labuhanbatu Regency and South Labuhanbatu Regency. The study was analyzed with Structural Equation Modeling using AMOS software version 23.The results showed that entrepreneurship orientation and market orientation has a significant role in improving the performance of th e f ashion industr y. We also found that market orientation has the most influence in improving performance Besides that it was found that the dominant factor in increasing entrepreneurial orientation was the ability to capture and identify business opportunities, while to shape market orientation, giving attention and customer satisfaction has an important role. We recommend for providing training to entrepreneurs related to how to identify and capture opportunities and also about increasing customer satisfaction. Key Words: Entrepreneurial Orientation, Market0Orientation, SMEs Performance ABSTRAK Orientasi kewirausahaan dan orientasi pasar memiliki peran yang sangat penting yang harus dimiliki seorang pengusaha agar berhasil dalam menjalankan bisnisnya. Penelitian ini bertujuan untuk menjelaskanpengaruh orientasi kewirausahaan danorientasi pasar terhadap kinerja UMKM sektor fashiondi Kabupaten Labuhanbatu dan Kabupaten Labuhanbatu Selatan, Provinsi Sumatera Utara. Penelitian ini melibatkan 205 UMKM pemilik industri fashion di Kabupaten Labuhanbatu dan Kabupaten Labuhanbatu Selatan. Penelitian dianalisisdengan Structural Equation Modeling dengan menggunakan software AMOS versi 23. Hasil penelitian menunjukkan bahwa orientasi kewirausahaan maupun orientasi pasar memiliki peran yang signifikan dalam meningkatkan kinerja UMKM sektorindustri fashion. Kami jugamenemukan bahwa orientasi pasar memiliki pengaruh yang paling besar dalam meningkatkan kinerja UMKM. Disamping itu ditemukan bahwa faktor yang dominan dalam meningkatkan orientasi kewirasauhaan adalah kemampuan dalam menangkap dan mengidentifikasi peluang bisnis, sedangkan untuk membentuk orientasi pasar, memberikan perhatian dan kepuasan pelanggan memiliki peran penting. Penulis merekomendasikan untuk memberikan pelatihan kepada pelaku usaha UMKM berkaitan dengan bagaimana mengidentifikasi dan menangkap peluang dan juga tentang peningkatan kepuasan pelanggan. Kata Kunci Orientasi Kewirausahaan,0Orientasi Pasar, Kinerja UMKM", "corpus_id": 214431359, "venue": "", "year": 2020, "author_names": [ "Elvina Elvina" ], "n_citations": 0, "n_key_citations": 0, "score": 2 }, { "doc_id": "202265378", "title": "Pengaruh Orientasi Pasar Dan Orientasi Kewirausahaan Terhadap Peningkatan Kinerja Usaha Mikro Kecil Menengah (UMKM) pada Industri Makanan Di Kecamatan Cipayung Jakarta Timur", "abstract": "Kewirausahaan entrepreneurship di Indonesia berperan penting dalam perekonomian Nasional. Khususnya Usaha Mikro Kecil dan Menengah (UMKM) yang terbukti telah memberi peluang kerja bagi masyarakat di Kecamatan Cipayung, Jakarta Timur, dan terus meningkat dari tahun ke tahun. Namun Perkembangan ini belum dibarengi kinerja maksimal UMKM, karena kendala: orientasi pasar yang konvensional, dan kurangnya orientasi kewirausahaan, karenanya dibuat penelitian berjudul Pengaruh orientasi pasar dan orientasi kewirausahaan terhadap kinerja UMKM, pada industri makanan di Kecamatan Cipayung Jakarta Timur? Dengan tujuan Untuk Mengetahui pengaruh orientasi pasar dan orientasi kewirausahaan secara simultan terhadap kinerja UMKM, menggunakan rancangan penelitian survey, observasi, teknik purposive sampling, data primer, data sekunder, skala likert, uji validitas, uji reliabilitas, analisa regresi linear berganda, program SPSS, kuesioner dan sampel 100 responden. Hasilnya: Orientasi Pasar berpengaruh sig. terhadap kinerja UMKM, (nilai sig. 0,019 1,988) dimana Ho ditolak dan H1 diterima, Orientasi Kewirausahaan berpengaruh sig. terhadap kinerja UMKM. dari nilai sig. 0,000 1,988, Ho ditolak dan H2 diterima. Maka Orientasi pasar dan orientasi kewirausahaan secara simultan berpengaruh terhadap kinerja UMKM. dari nilai Fhitung Ftabel (51,612 3,09) Dimana Ho ditolak dan H3 diterima. Diharapkan penelitian ini, dapat sebagai rekomendasi strategi peningkatan kinerja di Kecamatan Cipayung, Jakarta Timur. disarankan: pelaku UMKM agar menerapkan SOP yang jelas, berorientasi pasar, serta menguasai pasar melalui survey, riset, dengan gagasan baru dalam produk, iklan, pameran. Sehingga pemasaran produk dapat menjangkau wilayah didalam maupun diluar kecamatan Cipayung Kata kunci orientasi pasar, orientasi kewirausahaan kinerja", "corpus_id": 202265378, "venue": "", "year": 2019, "author_names": [ "Yulita Nurhartani", "Eros Rosmiati", "Maya Sova" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "216593055", "title": "PENGARUH ORIENTASI PASAR DAN INOVASI PRODUK TERHADAP KINERJA PEMASARAN UMKM KULINER DI KECAMATAN PONDOKMELATI BEKASI", "abstract": "Penelitian ini adalah penelitian kuantitatif untuk membuktikan pengaruh orientasi pasar dan inovasi produk terhadap kinerja pemasaran UMKM. Populasi dalama penelitian ini adalah pelaku UMKM Kuliner di Kecamatan Pondokmelati Bekasi. Ukuran sampel diambil sebanyak 30 responden, dengan metode penelitian non probability sampling khususnya sampel jenuh. Pengumpulan data dilakukan melalui penyebaran kuesioner. Teknik analisis yang digunakan adalah metode analisis PLS (Partial Least Square) Hasil penelitian ini menunjukan bahwa (1) orientasi pasar tidak berpengaruh signifikan terhadap kinerja pemasaran dengan nilai keofisien jalur sebesar 0.255. (2) inovasi produk tidak berpengaruh signifikan terhadap kinerja pemasaran dengan nilai koefisien jalur sebesar 0,504", "corpus_id": 216593055, "venue": "", "year": 2019, "author_names": [ "Calvin Nanda" ], "n_citations": 0, "n_key_citations": 0, "score": 3 }, { "doc_id": "226209545", "title": "PENGARUH ORIENTASI PASAR, ORIENTASI KEWIRAUSAHAAN DAN KEMAMPUAN PEMASARAN, TERHADAP KINERJA BISNIS UMKM CLOTHING LINE", "abstract": "One of driven national economy in Indonesian had been provided from the Micro, Small and Medium Enterprises (MSMEs) They play essential role both in national trade and labour force, According to survey data from the Central Statistics (BPS) MSMEs contributed 7,38% to national economy in 2016, In addition, fashion industry rose gradually 8,7% compared in last year with the amount of export finished $13.29 billion in 2017. Moreover, MSMEs absorb around 97% of the national workforce, while Large Enterprises only absorb around 3% of the total national workforce and Indonesian MSME businesses that are urgently needed by Micro Enterprises. This depencency encourage the competition indirectly, as a result businesses in the fashion need to consider market orientation to find opportunity, innovativey through entrepreneurial orientation, and marketing capabilities to maintain their business. This reseearch was conducted to investigate the effect of market orientation, enterpenuership orientation, market capabilities on the performance of MSME businesses. The research method used is an associative method, with primary and secondary data types as a reference. Respondents collected in this study were 150 respondents, with closed questionnaire containing 15 question attributes. In essence, the present studies found market orientation, entrepreneurship orientation were not significant, this result may not hold support business performance. On the other hand, market orientation, entrepreneurship orientation had significant outcomes and indicates both of market and enterprenuership orientation can drivers the using of marketing capabilities. Similar results, marketing capabilities had significant effect to business performance. However, like any empirical research this study has limitations, Based on this research, firstly the results have only been tested in one industry, additionally the role of internet had change trend of market orientation, market capabilities. This findings can be hint to another researcher to explore in technology as third party in case of sharing economy", "corpus_id": 226209545, "venue": "", "year": 2020, "author_names": [ "Sindy Purnamasari", "Andreas Wijaya" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "212947687", "title": "Peran Orientasi Pasar dalam Memediasi Pengaruh Orientasi Kewirausahaan terhadap Kinerja Bisnis dan Keunggulan BersaingStudi Pada UMKM Rumah Makan Minang di Sumatera Barat", "abstract": "ABSTRAK Penelitian ini bertujuan untuk melihat bagaimana implementasi strategi orientasi pada UMKM di Sumatera Barat. Terdapat dua parameter strategi yang digunakan yaitu orientasi kewirausahaan dan orientasi pasar. Fokus tujuan penelitian ini adalah untuk menganalisis peran orientasi pasar dalam memediasi pengaruh orientasi kewirausahaan terhadap kinerja bisnis dan keunggulan bersaing pada UMKM terutama industri kuliner yaitu Rumah Makan Minang di Sumatera Barat. Objek penelitian ini adalah rumah makan yang terdaftar pada BPS Sumatera Barat dan telah disurvei lokasi oleh tim googlemaps yang tersebar di sebelas kota. Sample penelitian ini diambil dari pemilik rumah makan. Pengumpulan data dilakukan dengan cara menyebarkan sebanyak 173 kuisioner kepada pemilik atau pengurus utama rumah makan. Proses pengambilan data dilakukan oleh lima orang tim yang telah berpengalaman dan diberikan pelatihan dan pemahaman terhadap pertanyaan yang terlampir dalam kuisioner tersebut. Teknik analisis data yang digunakan adalah Structural Equation Model (SEM) menggunakan program aplikasi SmartPLS 3.2.8 Professional. Dalam penelitian ini, disimpulkan bahwa orientasi pasar memiliki peran dalam memediasi pengaruh orientasi kewirausahaan terhadap kinerja bisnis, tapi tidak terbukti memiliki peran dalam memediasi pengaruh orientasi kewirausahaan terhadap keunggulan bersaing pada UMKM Rumah Makan Minang di Sumatera Barat. Indikator lainnya akan dibahas pada makalah ini. Kata Kunci: Orientasi Kewirausahaan, Orientasi Pasar, Kinerja Bisnis, Keunggulan Bersaing", "corpus_id": 212947687, "venue": "", "year": 2019, "author_names": [ "Amelia Triani Laura" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "212948538", "title": "PENGARUH ORIENTASI PASAR DAN PEMBELAJARAN ORGANISASIONAL TERHADAP KAPABILITAS INOVASI UNTUK MENINGKATKAN KINERJA BISNIS(Studi pada UMKM Industri Fashion di kota Semarang)", "abstract": "ABSTRACT This study examines the effect of market orientation and organizational learning on innovation capabilities to improve business performance (studies in the fashion industry MSMEs in the city of Semarang) The Fashion Industry is in a dynamic business scope, therefore creativity and innovation are needed to be able to follow a dynamic market. Local fashion is still a stepchild, the market prioritizes its space for imported products, so that local fashion has less space. In Semarang, the MSME fashion industry is increasing every year, but there are also some who close their businesses. Based on the results of the pre survey, there are still business actors who experience poor performance due to not being able to innovate. The sample of this study is the UMKM business in the fashion industry in Semarang City with 153 businesses. This study uses a purposive sampling method with data collection carried out by giving questionnaires to respondents with the conditions of doing their own production and the length of business more than 1 year. The analysis technique used to analyze the data obtained is the Structural Equation Modeling (SEM) technique using the AMOS application. From the results of testing the hypothesis, there are several conclusions in this study. First, there is a significant positive influence between market orientation and organizational learning on innovation capabilities. Second, there is a significant positive influence between market orientation and innovation capabilities on business performance. Third, there is a significant negative effect between organizational learning on business performance. Keywords: MSME, fashion, business performance, innovation capabilities, organizational learning, market orientation", "corpus_id": 212948538, "venue": "", "year": 2019, "author_names": [ "Goldvina Ulfah", "Retno Hidayati" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "203316761", "title": "Pengaruh Orientasi Kewirausahaan Dan Orientasi Pasar Terhadap Kinerja Umkm Pada Bidang Kuliner Di Pasar Lama Tangerang", "abstract": "The purpose of this study was to find out 1) whether entrepreneurial orientation had a significant effect and positively related to the performance of MSMEs in the culinary field in Tangerang Old Market, 2) whether market orientation had a significant effect and positively related to the performance of MSMEs in the culinary field at Tangerang Lama Market. The population in this study is Micro, Small and Medium Enterprises in Tangerang. The sample used in this study was 50 respondents of UMKM owners in the culinary field at Tangerang Old Market. The sampling technique used was nonprobability sample with purposive sampling sampling method. Overall the results of this study, namely 1) entrepreneurial orientation have a significant effect and positively related to the performance of MSMEs in the culinary field in Tangerang Old Market, 2) market orientation has a significant effect and positively related to the performance of MSMEs in the culinary field at Tangerang Old Market.", "corpus_id": 203316761, "venue": "", "year": 2019, "author_names": [ "Andriansyah Eko Prasetyo", "Andi Wijaya" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "210711505", "title": "Noninvasive Glucose Measurement Using Machine Learning and Neural Network Methods and Correlation with Heart Rate Variability", "abstract": "Diabetes is one of today's greatest global problems, and it is only becoming bigger. Constant measuring of blood glucose level is a prerequisite for monitoring glucose blood level and establishing diabetes treatment procedures. The usual way of glucose level measuring is by an invasive procedure that requires finger pricking with the lancet and might become painful and obeying, especially if this becomes a daily routine. In this study, we analyze noninvasive glucose measurement approaches and present several classification dimensions according to different criteria: size, invasiveness, analyzed media, sensing properties, applied method, activation type, response delay, measurement duration, and access to results. We set the focus on using machine learning and neural network methods and correlation with heart rate variability and electrocardiogram, as a new research and development trend.", "corpus_id": 210711505, "venue": "J. Sensors", "year": 2020, "author_names": [ "Marjan Gusev", "Lidija Poposka", "Gjoko Spasevski", "Magdalena Kostoska", "Bojana Koteska", "Monika Simjanoska", "Nevena Ackovska", "Aleksandar Stojmenski", "Jurij F Tasic", "Janez Trontelj" ], "n_citations": 17, "n_key_citations": 2, "score": 0 }, { "doc_id": "231617185", "title": "Heart Rate Variability of 30 minute ECG Measurements and Correlation to Glucose Levels", "abstract": "This paper shows the correlation between Heart Rate Variability parameters and glucose levels, which might potentially lead to a novel non invasive glucose monitoring methodology. The study is conducted using a dataset with 143 patients from the Gluco project. The dataset consists of plain ECG data. Heart rate variability (HRV) parameters are then extracted from the electrocardiogram (ECG) data. Outlier handling, statistical measures and HRV distribution charts are covered in this paper. Our previous results show that a 24h ECG measurement will produce a more relevant result for the HRV parameters. In this paper, we investigate the hypothesis is: \"if 30 minutes ECG measurements are relevant as an estimation of a body regulation ability instead of 24h measurements\"", "corpus_id": 231617185, "venue": "2020 28th Telecommunications Forum (TELFOR)", "year": 2020, "author_names": [ "Aleksandar Stojmenski", "Marjan Gusev", "Lidija Poposka", "Marija Vavlukis" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "221624020", "title": "Blood glucose fluctuations in patients with coronary heart disease and diabetes mellitus correlates with heart rate variability: A retrospective analysis of 210 cases", "abstract": "Aim: This retrospective analysis aims to evaluate the correlation between blood glucose fluctuation (BGF) and heart rate variability (HRV) in patients with coronary heart disease (CHD) and type 2 diabetes mellitus (T2DM) Subjects and Methods: In total, 210 patients with CHD and T2DM from January 2014 to January 2019 admitted to Wenling Hospital of Traditional Chinese Medicine were enrolled in this study. Based on whether BGF existed, patients were allocated to BG control group and BG fluctuation group. The HRV parameters, frequency of adverse events, and Gensini score between groups were recorded and Pearson analysis was performed. Results: Results displayed that no significant differences in age, gender, body mass index (BMI) systolic blood pressure (SBP) diastolic blood pressure (DBP) alcohol consumption history, drinking history, or serum lipid were found between groups (P 0.05 for all items) However, the BGF parameters were significantly higher while the HRV parameters were significantly lower in BG fluctuation group, compared with BG control group (P 0.05 for all items) Pearson analysis showed that despite mean blood glucose (MBG) and mean amplitude of glycemic excursions (MAGE) both correlated with a standard deviation of NN intervals (SDNN) level, the correlation coefficient of MAGE SDNN was much higher 0.705 vs 0.185) Additionally, the frequencies of adverse events and Gensini scores were also significantly higher in the BG fluctuation group than the BG control group. Conclusions: It suggests that BGF strongly correlated with HRV in patients with CHD and T2DM. It also provides experimental instructions for clinical practice.", "corpus_id": 221624020, "venue": "Nigerian journal of clinical practice", "year": 2020, "author_names": [ "Y Chen", "Tong Jia", "X Yan", "L Dai" ], "n_citations": 5, "n_key_citations": 1, "score": 1 }, { "doc_id": "215793507", "title": "Sexual Dimorphism of Heart Rate Variability in Adolescence: A Case Control Study on Depression, Anxiety, Stress Levels, Body Composition, and Heart Rate Variability in Adolescents with Impaired Fasting Glucose", "abstract": "Prediabetes in the form of impaired fasting glucose, impaired glucose tolerance, or both is considered as a preliminary stage for the onset of diabetes and diabetic complications. Hormonal fluctuations in adolescence are accompanied by body composition modifications, which are associated with insulin resistance and subclinical inflammation. Bioimpedance (BIA) accurately evaluates body composition, and heart rate variability (HRV) assesses cardiac autonomic function, which are frequently afflicted by insulin resistance. We aimed at evaluating the effect of glycemic status on mental stress, anxiety, and depression status in adolescents with impaired fasting glucose, body composition, and HRV parameters. This is a case control study to evaluate the effect of the hyperglycemia on depression, anxiety, and stress levels (DASS21 questionnaire) body composition (BIA ACC BIOTEKNA(c) and HRV (PPG Stress Flow BIOTEKNA(c) between euglycemic adolescents (euglycemic group) and adolescents with impaired fasting glucose (prediabetic group) aged 12 20 years. No differences were found between the prediabetic (n 13) and the euglycemic (n 16) groups in the outcome measures, possibly due to the number of participants. Interestingly, females, irrespective of their glycemic status, exhibited altered sympathovagal function as revealed by impaired HRV. In the euglycemic group, HRV parameters were significantly correlated and in line with the DASS21 scores, but in the prediabetic group, similarities to those of adults were observed. Impaired fasting glucose had no impact on mental health, body composition, or HRV parameters in adolescents. HRV parameters were impaired in females, irrespective of their glycemic status. This finding implies that females seem to be more prone to stress disorders, even from a young age. Future studies are needed to confirm these findings.", "corpus_id": 215793507, "venue": "International journal of environmental research and public health", "year": 2020, "author_names": [ "Charikleia Stefanaki", "Athanasios Michos", "George Latsios", "Dimitrios Tousoulis", "Melpomeni Peppa", "Paraskevi Zosi", "Dario Boschiero", "Flora Bacopoulou" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "225203912", "title": "Correlating Heart Rate Variability to Glucose Levels", "abstract": "A study has been undertaken under the umbrella of a project focusing on noninvasive electrocardiogram (ECG) monitoring. The main goal of the study is to figure out which heart rate variability parameter has the ability to give the most accurate information for the Glucose level of a patient. The results show that for short term continuous measurements (minimum five minutes) and without extrasystoles or noise in the ECG signal the Root Mean Square Successive Differences parameter has demonstrated better correlation capabilities with a glucose level compared to other parameters. On the other hand, for long term measurements (hourly lengths) the better indicator came to be Standard Deviation of Normal to Normal intervals however, not the combined Standard Deviation of Normal to Normal intervals but the averages of Standard Deviations of Normal to Normal intervals calculated on separate sequences.", "corpus_id": 225203912, "venue": "", "year": 2020, "author_names": [ "E Shaqiri", "Marjan Gusev", "Lidija Poposka", "Marija Vavlukis" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "227521523", "title": "Rapid glucose rise reduces heart rate variability in adults with type 1 diabetes: A prospective secondary outcome analysis", "abstract": "To investigate differences in heart rate variability (HRV) during oral glucose tolerance tests (OGTTs) in response to the rate of change in glucose and to different glycaemic ranges in individuals with type 1 diabetes. This was a single centre, prospective, secondary outcome analysis in 17 individuals with type 1 diabetes (glycated haemoglobin 53 6.3 mmol/L) who underwent two OGTTs (after 12 and 36 hours of fasting) investigating differences in HRV in response to rapid glucose increases/decreases and different glycaemic ranges during OGTT. Based on the rate of change in glucose level, the variables heart rate (P 0.001) square root of the mean standard difference of successive R R intervals (P 0.002) percentage of pairs of R R intervals with >50 ms difference (P 0.001) and corrected QT interval (P 0.04) were significantly altered, with HRV particularly reduced during episodes of rapid glucose rises. Glycaemic ranges during OGTT had no impact on HRV (P 0.05) Individuals with type 1 diabetes showed no changes in HRV in response to different glycaemic ranges. HRV was dependent on the rate of change in glucose, especially rapid increases in glucose level.", "corpus_id": 227521523, "venue": "Diabetes, obesity metabolism", "year": 2020, "author_names": [ "Max L Eckstein", "Othmar Moser", "Norbert J Tripolt", "Peter N Pferschy", "Anna Obermayer", "Harald Kojzar", "Alexander Mueller", "Farah Abbas", "Caren Sourij", "Harald Sourij" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "231617480", "title": "Deep Learning Method to Estimate Glucose Level from Heart Rate Variability", "abstract": "Recently, there have been efforts by different researchers in implementing some Machine Learning (ML) and Deep Learning (DL) techniques in designing a model that will predict Glucose based solely on Heart Rate Variability parameters. However, each study uses an in house dataset and thus the results differ from the rest. The aim of this paper is to explore the predictive capabilities of DL techniques in designing a model to predict glucose regulation from Heart Rate Variability. The clinical study was conducted on a dataset of 155 patients with long term Electrocardiogram measurements. The best results are achieved with an architecture of three hidden layers (32, 256, and 64 neurons, respectively) with an Adam optimizer alongside a learning rate of 0.001 coupled by a Binary Cross entropy loss function. Furthermore, the Z score outlier removal method proved to lead to a higher accuracy value, whilst the IQR outlier removal method proved to lead to a higher Fl score value.", "corpus_id": 231617480, "venue": "2020 28th Telecommunications Forum (TELFOR)", "year": 2020, "author_names": [ "E Shaqiri", "Marjan Gusev" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "231617636", "title": "Correlating Short Term Heart Rate Variability and Instantaneous Blood Glucose Measurements", "abstract": "In this research, we aim to analyze the correlations between instantaneous blood glucose measurements and short term (30 seconds to 5 minutes) heart rate variability (HRV) parameters and check the research hypothesis that these HRV parameters indicate the ability of a patient to control the blood glucose level. Methodology: Pearson and Spearman's Rank correlations are used as methods within this paper. Although 155 patients with heart problems and arrhythmia were included in the study, only intervals between normal heartbeats were evaluated. Data: The HRV parameters correlated to the blood glucose levels are divided into time domain (TD) HRV parameters: SDNN, SDNN Prima (SDNN 1) ASDNN, ASDNN Prima (ASDNN 1) ASDNN Secunda (ASDNN 2) ASDNN Tertia (ASDNN 3) SDANN Secunda (SDANN 2) SDANN Tertia (SDANN 3) NN50, NN50 Prima (NN50 1) pNN50, pNN50 Prima (pNN50 1) rMSSD and rMSSD Prima (rMSSD 1) and non linear HRV parameters: SD1, SD2, SD1/SD2. Several methods were utilized to process the ECG signal strip and eliminate the ectopic beats, artifacts, lost signals, noise, and other segments that influence HRV metrics. Conclusion: We found that SD1/SD2 showed the strongest positive correlations for 5 minute ECG recordings, 45 40 minutes before $r 0.36$ and 20 25 minutes after $r 0.31$ the fasting glucose measurement satisfying the condition $p$ 0.05. We conclude that short term HRV parameters can't indicate a strong linear or monotonic correlation to the blood glucose regulation ability, but can motivate further research including deep learning.", "corpus_id": 231617636, "venue": "2020 28th Telecommunications Forum (TELFOR)", "year": 2020, "author_names": [ "Ilija Vishinov", "Marjan Gusev", "Marija Vavlukis", "Lidija Poposka" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "229358970", "title": "Association of glucose homeostasis measures with heart rate variability (HRV) among hyperlipidemic rat model: protective role of Emblica officinalis", "abstract": "Background: Altered glucose homeostasis due to hyperlipidemia mainly revolves around pathophysiological effects of abnormal lipid levels and insulin resistance. Reduced HRV an indicator of cardiac autonomic function is connected with greater risk of cardiovascular diseases. Glucose homeostasis markers were related with reduced cardiac autonomic functions in diabetic rats but results reported were discordant with those without diabetes. Aims and objectives: Study aimed to assess relation between glucose homeostasis with HRV among hyperlipidemic rats and to assess protective glucose regulatory actions of Emblica officinalis on hyperlipidemic rats. Material and Methods: Ethanolic extract of Emblica Officinalis (EEO) was prepared. Rats were divided into four groups (n=6) group 1 Control (20% fat) group 2 (20% fat+ EEO 100 mg/kg/b w) group 3 (30% fat) and group 4 (30% fat EEO 100 mg/kg/b w) for 21 days.Gravimetry and electrophysiological analysis (HRV and sympathovagal balance) were done. In vivo, tests on glucose regulatory system were conducted like fasting and postprandial glucose, fasting insulin levels and Oral Glucose Tolerance Test. Homeostasis Model Assessment of Insulin Resistance (HOMA IR) was calculated. ANOVA and Pearson's correlation was done to analyze the data. Results: Subchronic supplementation of EEO to hyperlipidemic rats showed a significant beneficial effect on altered glucose homeostasis. An electrophysiological evaluation revealed altered sympathovagal balance in hyperlipidemic rats which indicate cardiac autonomic malfunctions and found to be improved in EEO supplemented rats. A significant correlation was observed between HRV and glucose homeostasis. Conclusion: Impairment in glucose homeostasis due to High fat diet is associated with altered heart rate variability. EEO supplementation found to be protective against high fat diet induced cardiac autonomic dysfunction and glucose metabolism.", "corpus_id": 229358970, "venue": "", "year": 2020, "author_names": [ "Pallavi S Kanthe", "Bheemshetty S Patil", "Sumangala M Patil", "Kusal K Das" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "225597945", "title": "Effect Of Energy Drink Consumption On Heart Rate Variability And Blood Glucose In Relation To Exercise", "abstract": "METHODS: Consecutive 14 girl runners (16.6 0.7 y/o, 161.0 6.3 cm, 45.2 5.4 kg) in the same competitive high school team were evaluated without control on food and exercise. Each runner was asked to report dietary records with photos and training logs for 7 days. Energy intake (EI) was assessed by registered nutritionists. The runners were tested on treadmill with indirect calorimeter to yield individual prediction equations for VO2 by running velocity. Exercise energy expenditure (EEE) was calculated by the equations based on the training log. EA was calculated by subtracting EEE from EI for each day. The daily means of those variables were calculated. BMR was measured by whole room calorimeter in the early morning after overnight sleep at the night of the last day of the assessment inside the calorimeter. Body composition was measured by DXA. Bivariate correlation analyses and t test were used to examine the relationships and the difference between variables and groups, respectively. RESULTS: Percent body fat %BF) fat free mass (FFM) and bone mineral density of TBLH (BMD) were 13.3 4.5 39.0 3.5 kg, and 1.013 0.04 g/cm, respectively. BMR, EI, EEE, and EA were 26.5 2.4 kcal/kg*FFM/day, 2330 479 kcal/day, 892 245 kcal/day, and 37.4 10.7 kcal/kg*FFM/day, respectively. EA was significantly correlated with BMR (r=0.60, p=0.02) However, EA was not correlated with either %BF (p=0.25) or BMD (p=0.16) and did not differ between runners with oligo/amenorrhea (n=7; 40.8 11.9) and eumenorrhea (n=6; 34.0 9.8) (p=0.29) CONCLUSIONS: The strong linear correlation between EA and BMR supports the theory that decrease in EA leads to compensatory adaptation in metabolism which may suppress reproduction or bone mineral accrual. However, arbitrarily evaluated EA in short term was not related to the triad associated conditions. Those results were consistent with the evidences from adult Caucasian population.", "corpus_id": 225597945, "venue": "", "year": 2020, "author_names": [ "Quinn Moberg", "Gregory Mulligan", "Lynneth A Stuart-Hill" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "158074066", "title": "A Study on the Impact of Social Media Usage on Student Academic Performance: University of Tabuk an Example", "abstract": "The use of social media has met a rapid growth among the few past decades. This growth make it very popular for the communication amongst university students especially Tabuk university students. In fact, these social websites can be a good manner to exchange the information between students and even with their teachers. However, excessive social media can affect the student academic performance and make this use in question. This research tries to investigate about the benefits and the drawbacks of the social media use on student academic performance by conducting a survey on university students in Saudi Arabia especially in Tabuk university. The survey also explored which social network is the most popular amongst Tabuk university students and which one is useful for their academic skills. The survey has received 270 responses and descriptive statistics shows the relationship between the numbers of hours spent exploring the social media sites and the academic performances for the student. The results of this paper can be useful to propose an effective plan to enhance the academic performance for the students by improving the use of the social media sites.", "corpus_id": 158074066, "venue": "", "year": 2018, "author_names": [ "Monia Oueder", "Inam Abousaber" ], "n_citations": 8, "n_key_citations": 0, "score": 1 }, { "doc_id": "219602593", "title": "The Explanatory Study on the Practices of Student's Social Media Usage and its Perceived Challenges on Academic Performance at Wolaita Sodo University", "abstract": "The internet technology of social media has clearly impact on academic performance. The purpose this study is to identify the practices of student's social media usage and its perceived challenges on academic performance at Wolaita Sodo University. The case study design and a qualitative explanatory research approach were employed. The availability samplings technique was used in the selection of the samples of the study. Twenty seven (27) participants (18 males and 9 females) for interview and nine (9) participants (5 males and 4 females) for FGD; total of thirty six (36) participants were included in this study. In depth interview was used as an instrument. The data was analyzed by using thematic analysis method. The findings indicated that all of students were engaged with social media by accessing Wi Fi, mobile data and Internet cafe. Majority of students use social media unmanageably and they spend long time on social media that is more than 3 hours per day. Majority of participants suggested that students should not use social media more than two hours per day. Reports of participants indicated that majority of students are not using social media for their academic purpose but they are using social media to watch movies, share/like comments, and to chat with friends. Majority of participants addressed that social media is not much more supported students learning because it disturbs them to focus on academic activity rather chatting with virtual friends. The reports participants portrayed that university students' are exposed to many challenges because of social media usage, like account hacking; watching pornography, education problem; unintentional loss of their priority to do academic endeavor and not focusing on academic activities. Based on the findings students are suggested to use social media for academic purpose and should be self disciplined in usage of social media by minimizing the time spending on it to focus on their education.", "corpus_id": 219602593, "venue": "", "year": 2020, "author_names": [ "Metasebya Gonta", "Million Desalegn" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "201401788", "title": "THE IMPACT OF SOCIAL MEDIA USAGE TO ACADEMIC PERFORMANCE", "abstract": "Background: Social media is basically a tool for someone to interact with other people with use of internet. In futher, social media is not only used as a tool for interact with others, but it can be used on learning process. This study aims to analyse correlation betwen duration of using a social media with academic performance.Method: This study used a cross sectional design. Respondents on this study are 126 undergraduates students on fourth years in Faculty of Medicine, Universitas Islam Sumatera Utara. Using of a social media are measured by how long a student use of a social media based on their purpose (learning or entertainment) Results from the measurement will grouping into two different group, that is using of a social media for learning group and for entertainment group. The academic performance was measured by calculating a Grade Point Average (GPA) of each student. The collected data were analyzed by using Spearman Correlation method.Results: There was a significant correlation betwen duration of using a social media for learning process with academic performance (r 0,554, p 0,0001) Similarly, there are a significant correlation betwen duration of using a social media for entertainment with academic performance (r 0,568, p 0,0001) but the coefficient correlation have a negative value.Conclusion: The social media have an impact to academic performance, where the students who used more social media as a learning process have a good GPA and the students who used more social media as a entertainment have a bad GPA. Sugesstions that can be given based on this study are the use of social media can be considered as a tool for helping students enhancing learning process.", "corpus_id": 201401788, "venue": "Jurnal Pendidikan Kedokteran Indonesia: The Indonesian Journal of Medical Education", "year": 2019, "author_names": [ "Suita Allemina Gloria", "S Z A Akbar" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "151082222", "title": "Effects of Social Media Usage on Academic Performance of Undergraduate Students", "abstract": "Social media has gained widespread and universal usage among higher education students and started to serve as a new communication platform in teaching and learning process. This article presents the results of a survey study conducted to 394 undergraduate students to analyse the relationship between the variables of social media usage and undergraduate student's academic performance. Additionally, to explore the relationship between using social media in communication activities for academic purposes and undergraduate student's academic performance are among the main concerns of this study. The relationships between mentioned variables were studied by correlational method in descriptive manner. Research results reveal once again the high level of social media usage among undergraduate students to perform variety of daily activities. It has been also determined that, social media as an out of class environment that allows communication about academic issues plays a weak but positive role to increase the level of being more active in class and time spent for preparation to the course before class that are all related to higher academic performance.", "corpus_id": 151082222, "venue": "", "year": 2018, "author_names": [ "Sevilay Arslan" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "202235382", "title": "Influence of Whatsapp and Facebook Social Media Usage on Academic Performance of Secondary School Students in Port Harcourt Local Government Area Rivers State Nigeria Dr Mrs", "abstract": "This study investigated WhatsApp and facebook social media usage on academic performance of secondary school students in Port Harcourt city local government area of Rivers State, Nigeria. Three hundred senior secondary school two students were used for the study. The study had aim and objectives, two research questions and corresponding hypotheses. It adopted the correlational research design. Two instruments; the \"Social Media Questionnaire\"(SMQ) and the English Achievement Test\" (EAT) were used for data collection. Reliability of the instrument was 0.94 for the Social Media Questionnaire and 0.82 for the English Achievement Test. Simple and multiple regressions were used to analyze the data generated. Findings were that, WhatsApp has a significant value of 0.01 showing that there is a significant relationship of student\"s usage of this platform on their academic performance, since the proportionate value is less than the alpha level which is 0.05, therefore, the null hypothesis is rejected. On the other hand, facebook had a significant value of 0.19 which has no significant relationship since the p value is high. Furthermore, there was a significant relationship of about 3.9% when all the social media platforms are put together, it affects students\" academic performance. Based on these, it was recommended among others that government, parents, teachers, counsellors and school administrators should moderate student\"s participation on the social media platform so as to use it positively and harness its gains extensively.", "corpus_id": 202235382, "venue": "", "year": 2017, "author_names": [ "Ijeoma Ernest-Ehibudu" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "234411790", "title": "Exploring the relationship between social media usage and academic performances", "abstract": "Social media and academic grades are two of the most important things in an average student's life. Several factors play an important role in determining whether he achieves first class, second class, third class, or distinction. This study aims to find out the extent to which Social Media impacts the student's academic results. Using Pearson's Correlation test, the study determined that there was a negative impact of social media usage on academic performance. Furthermore, Pearson's Correlation test also showed us that the distraction caused by social media impact their academic performance. There is a high need to include various beneficial aspects of social media in a classroom's teachings. Instead of outright condemning social media usage by students, education systems and academics should try and make it a part of the educational curriculum. The longer the academicians try and stick to the age old teaching method from a constraint boundary of class and books, the more we unequip students from the necessary skillsets required to bring a change and lead.", "corpus_id": 234411790, "venue": "", "year": 2020, "author_names": [ "Udbhava Rathi", "J DanielJohnK", "Joel Mathew Jose" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "226726886", "title": "Student Social Media Usage and Its Relation to Free recall Memory Tasks", "abstract": "Some studies reported that higher usage of social media is associated with lower performance in memory or other cognitive ability tests or lower academic achievement. The purpose of this research was to provide descriptive data regarding student social media usage and examine the relationship between the amount of time and frequency a certain platform was checked with the performance of memory tasks. The participants were high school and university students aged between 16 and 20. They took part in a free recall working memory task (WMT) after which they completed a Social Media Questionnaire (SMQ) Using regression analysis, it was found that Facebook/Instagram usage could not predict the task result and neither could the frequency of checking. Models tested separately for high school and university students and found that frequent Instagram checking was a positive predictor of the free recall task for university students. Additionally, Facebook usage related to Instagram usage and the frequency of Facebook checking related to Instagram checking. The results did not provide evidence to support the idea that social media is damaging to cognitive abilities, quite the opposite in the instance of Instagram checking by university students. A consensus on this topic is yet to be made and there is more research to be done.", "corpus_id": 226726886, "venue": "2020 43rd International Convention on Information, Communication and Electronic Technology (MIPRO)", "year": 2020, "author_names": [ "Violeta Vidacek Hains", "Maja Kucar", "Ratko Kovacic" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "216194442", "title": "How Social Media Usage Influences Student Learning Outcomes", "abstract": "The development of new information and communication technologies and their utilization in everyday lives and especially the involvement of new generation in the usage of these technologies for communication, for entertainment, for education, and other activities has raised a real problem of distracting of young generation from necessary information for professional and intellectual development. In this chapter, the influence of social networks on higher institution students' academic performance is considered. There is a trial to build analytical models and estimate the degree of social networks impact on student academic performance by using GPA grades. The problem of involvedness of young people in social networks and its impact on the study process and academic performance brought concern towards the quality of professional development in the Central Asian region. As it is a sustainable development provided by the country's economy, the educational system directly depends on younger generation's interest in study and wellbeing.", "corpus_id": 216194442, "venue": "", "year": 2020, "author_names": [ "Uldana Baizyldayeva" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "225835626", "title": "Social Media Analytics for Academic Performance of Students", "abstract": "Abstract Nowadays social media become the public platform around the world to discuss issues or for getting information, finding friends and many more. It is part for daily life which refers a common activity amongst children, youngsters and emerging adults. Excessive usage of social media may raise the question about the performance of students. Prediction of any event is always fascinating and very important part of the research. In this article, we predict student performance and success rate in terms of their academic result and estimate the relation between students based depending on use or misuse of social media. Data is collected from WhatsApp groups of the class of 50 to 60 students to get their conveying and participating pursuits in specific subject. Analytics would be generated from students' interconnection with educational systems and resources and other widely used social media apps. Analysis is based on how the students effected by media, purpose of use and the negative and positive impact on students. The age group used for prediction is between primary students to under graduate (engineering) students. Our result will reflect usage of social media, impact on their academic activity, and how to control the usage in college hours. This will also show the students movements on social media apps and devices are good predictors of academic performance or not. Keywords: Social media analytics, WhatsApp, academic performance Cite this Article Chanchal P. Kedia, Nilesh J. Uke. Social Media Analytics for Academic Performance of Students. Journal of Electronic Design Technology 2020; 11(1) 21 26p.", "corpus_id": 225835626, "venue": "", "year": 2020, "author_names": [ "Chanchal P Kedia", "Nilesh Uke" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "227799939", "title": "The impact of social media usage and addiction among student Siti Maheran Mohd Faudzi", "abstract": "The social network, which is one of the key indicators of the technology era, attracts all levels while virtual worlds over real life through the applications it offers. Especially young people show high interest in social media that is an extension of Internet technology. Social media addiction is increasing worldwide. This study aims to examines impact of academic performance in social media addiction among social student. Based on data obtained by the Malaysian Communications and Multimedia Commission (MCMC, 2016) shows that Malaysia's broadband penetration rate reaches almost 78 percent. The study also found that those who are still in school spend the most time online, which is 20.9 hours a week. This this study. The two theories, the diffusion of innovations theory and the process virtualization theory posited that impact social media usage and addiction towards academic performance in student university.", "corpus_id": 227799939, "venue": "", "year": 2019, "author_names": [ "Mohd Hasbullah Mohamad Faudzi", "Siti Maheran" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "204838007", "title": "Exploring the Limits of Transfer Learning with a Unified Text to Text Transformer", "abstract": "Transfer learning, where a model is first pre trained on a data rich task before being fine tuned on a downstream task, has emerged as a powerful technique in natural language processing (NLP) The effectiveness of transfer learning has given rise to a diversity of approaches, methodology, and practice. In this paper, we explore the landscape of transfer learning techniques for NLP by introducing a unified framework that converts every language problem into a text to text format. Our systematic study compares pre training objectives, architectures, unlabeled datasets, transfer approaches, and other factors on dozens of language understanding tasks. By combining the insights from our exploration with scale and our new \"Colossal Clean Crawled Corpus\" we achieve state of the art results on many benchmarks covering summarization, question answering, text classification, and more. To facilitate future work on transfer learning for NLP, we release our dataset, pre trained models, and code.", "corpus_id": 204838007, "venue": "J. Mach. Learn. Res.", "year": 2020, "author_names": [ "Colin Raffel", "Noam M Shazeer", "Adam Kaleo Roberts", "Katherine Lee", "Sharan Narang", "Michael Matena", "Yanqi Zhou", "Wei Li", "Peter J Liu" ], "n_citations": 2034, "n_key_citations": 392, "score": 0 }, { "doc_id": "214667149", "title": "Covid 19: automatic detection from X ray images utilizing transfer learning with convolutional neural networks", "abstract": "In this study, a dataset of X ray images from patients with common bacterial pneumonia, confirmed Covid 19 disease, and normal incidents, was utilized for the automatic detection of the Coronavirus disease. The aim of the study is to evaluate the performance of state of the art convolutional neural network architectures proposed over the recent years for medical image classification. Specifically, the procedure called Transfer Learning was adopted. With transfer learning, the detection of various abnormalities in small medical image datasets is an achievable target, often yielding remarkable results. The datasets utilized in this experiment are two. Firstly, a collection of 1427 X ray images including 224 images with confirmed Covid 19 disease, 700 images with confirmed common bacterial pneumonia, and 504 images of normal conditions. Secondly, a dataset including 224 images with confirmed Covid 19 disease, 714 images with confirmed bacterial and viral pneumonia, and 504 images of normal conditions. The data was collected from the available X ray images on public medical repositories. The results suggest that Deep Learning with X ray imaging may extract significant biomarkers related to the Covid 19 disease, while the best accuracy, sensitivity, and specificity obtained is 96.78% 98.66% and 96.46% respectively. Since by now, all diagnostic tests show failure rates such as to raise concerns, the probability of incorporating X rays into the diagnosis of the disease could be assessed by the medical community, based on the findings, while more research to evaluate the X ray approach from different aspects may be conducted.", "corpus_id": 214667149, "venue": "Physical and Engineering Sciences in Medicine", "year": 2020, "author_names": [ "Ioannis D Apostolopoulos", "Tzani Bessiana" ], "n_citations": 757, "n_key_citations": 52, "score": 1 }, { "doc_id": "215828222", "title": "Deep COVID: Predicting COVID 19 from chest X ray images using deep transfer learning", "abstract": "Abstract The COVID 19 pandemic is causing a major outbreak in more than 150 countries around the world, having a severe impact on the health and life of many people globally. One of the crucial step in fighting COVID 19 is the ability to detect the infected patients early enough, and put them under special care. Detecting this disease from radiography and radiology images is perhaps one of the fastest ways to diagnose the patients. Some of the early studies showed specific abnormalities in the chest radiograms of patients infected with COVID 19. Inspired by earlier works, we study the application of deep learning models to detect COVID 19 patients from their chest radiography images. We first prepare a dataset of 5,000 Chest X rays from the publicly available datasets. Images exhibiting COVID 19 disease presence were identified by board certified radiologist. Transfer learning on a subset of 2,000 radiograms was used to train four popular convolutional neural networks, including ResNet18, ResNet50, SqueezeNet, and DenseNet 121, to identify COVID 19 disease in the analyzed chest X ray images. We evaluated these models on the remaining 3,000 images, and most of these networks achieved a sensitivity rate of 98% 3% while having a specificity rate of around 90% Besides sensitivity and specificity rates, we also present the receiver operating characteristic (ROC) curve, precision recall curve, average prediction, and confusion matrix of each model. We also used a technique to generate heatmaps of lung regions potentially infected by COVID 19 and show that the generated heatmaps contain most of the infected areas annotated by our board certified radiologist. While the achieved performance is very encouraging, further analysis is required on a larger set of COVID 19 images, to have a more reliable estimation of accuracy rates. The dataset, model implementations (in PyTorch) and evaluations, are all made publicly available for research community at https:/github.com/shervinmin/DeepCovid.git", "corpus_id": 215828222, "venue": "Medical Image Analysis", "year": 2020, "author_names": [ "Shervin Minaee", "Rahele Kafieh", "Milan Sonka", "Shakib Yazdani", "Ghazaleh Jamalipour Soufi" ], "n_citations": 231, "n_key_citations": 13, "score": 1 }, { "doc_id": "213146444", "title": "A Novel Transfer Learning Based Approach for Pneumonia Detection in Chest X ray Images", "abstract": "Pneumonia is among the top diseases which cause most of the deaths all over the world. Virus, bacteria and fungi can all cause pneumonia. However, it is difficult to judge the pneumonia just by looking at chest X rays. The aim of this study is to simplify the pneumonia detection process for experts as well as for novices. We suggest a novel deep learning framework for the detection of pneumonia using the concept of transfer learning. In this approach, features from images are extracted using different neural network models pretrained on ImageNet, which then are fed into a classifier for prediction. We prepared five different models and analyzed their performance. Thereafter, we proposed an ensemble model that combines outputs from all pretrained models, which outperformed individual models, reaching the state of the art performance in pneumonia recognition. Our ensemble model reached an accuracy of 96.4% with a recall of 99.62% on unseen data from the Guangzhou Women and Children's Medical Center dataset.", "corpus_id": 213146444, "venue": "", "year": 2020, "author_names": [ "Vikas Chouhan", "Sanjay Kumar Singh", "Aditya Khamparia", "Deepak Gupta", "Prayag Tiwari", "Catarina Moreira", "Robertas Damasevicius", "Victor Hugo C Albuquerque" ], "n_citations": 161, "n_key_citations": 6, "score": 1 }, { "doc_id": "214743348", "title": "Diagnosing COVID 19 pneumonia from x ray and CT images using deep learning and transfer learning algorithms", "abstract": "The novel coronavirus 2019 (COVID 19) first appeared in Wuhan province of China and spread quickly around the globe and became a pandemic. The gold standard for confirming COVID 19 infection is through Reverse Transcription Polymerase Chain Reaction (RT PCR) assay. The lack of sufficient RT PCR testing capacity, false negative results of RT PCR, time to get back the results and other logistical constraints enabled the epidemic to continue to spread albeit interventions like regional or complete country lockdowns. Therefore, chest radiographs such as CT and X ray can be used to supplement PCR in combating the virus from spreading. In this work, we focus on proposing a deep learning tool that can be used by radiologists or healthcare professionals to diagnose COVID 19 cases in a quick and accurate manner. However, the lack of a publicly available dataset of X ray and CT images makes the design of such AI tools a challenging task. To this end, this study aims to build a comprehensive dataset of X rays and CT scan images from multiple sources as well as provides a simple but an effective COVID 19 detection technique using deep learning and transfer learning algorithms. In this vein, a simple convolution neural network (CNN) and modified pre trained AlexNet model are applied on the prepared X rays and CT scan images. The result of the experiments shows that the utilized models can provide accuracy up to 98% via pre trained network and 94.1% accuracy by using the modified CNN.", "corpus_id": 214743348, "venue": "Defense Commercial Sensing", "year": 2021, "author_names": [ "Halgurd S Maghdid", "Aras Asaad", "Kayhan Zrar Ghafoor", "Ali Safa Sadiq", "Muhammad Khurram Khan" ], "n_citations": 156, "n_key_citations": 7, "score": 1 }, { "doc_id": "217189811", "title": "Within the Lack of Chest COVID 19 X ray Dataset: A Novel Detection Model Based on GAN and Deep Transfer Learning", "abstract": "The coronavirus (COVID 19) pandemic is putting healthcare systems across the world under unprecedented and increasing pressure according to the World Health Organization (WHO) With the advances in computer algorithms and especially Artificial Intelligence, the detection of this type of virus in the early stages will help in fast recovery and help in releasing the pressure off healthcare systems. In this paper, a GAN with deep transfer learning for coronavirus detection in chest X ray images is presented. The lack of datasets for COVID 19 especially in chest X rays images is the main motivation of this scientific study. The main idea is to collect all the possible images for COVID 19 that exists until the writing of this research and use the GAN network to generate more images to help in the detection of this virus from the available X rays images with the highest accuracy possible. The dataset used in this research was collected from different sources and it is available for researchers to download and use it. The number of images in the collected dataset is 307 images for four different types of classes. The classes are the COVID 19, normal, pneumonia bacterial, and pneumonia virus. Three deep transfer models are selected in this research for investigation. The models are the Alexnet, Googlenet, and Restnet18. Those models are selected for investigation through this research as it contains a small number of layers on their architectures, this will result in reducing the complexity, the consumed memory and the execution time for the proposed model. Three case scenarios are tested through the paper, the first scenario includes four classes from the dataset, while the second scenario includes 3 classes and the third scenario includes two classes. All the scenarios include the COVID 19 class as it is the main target of this research to be detected. In the first scenario, the Googlenet is selected to be the main deep transfer model as it achieves 80.6% in testing accuracy. In the second scenario, the Alexnet is selected to be the main deep transfer model as it achieves 85.2% in testing accuracy, while in the third scenario which includes two classes (COVID 19, and normal) Googlenet is selected to be the main deep transfer model as it achieves 100% in testing accuracy and 99.9% in the validation accuracy. All the performance measurement strengthens the obtained results through the research.", "corpus_id": 217189811, "venue": "Symmetry", "year": 2020, "author_names": [ "Mohamed Loey", "Florentin Smarandache", "Nour Eldeen Mahmoud Khalifa" ], "n_citations": 149, "n_key_citations": 7, "score": 1 }, { "doc_id": "219013245", "title": "A Secure Federated Transfer Learning Framework", "abstract": "Machine learning relies on the availability of vast amounts of data for training. However, in reality, data are mostly scattered across different organizations and cannot be easily integrated due to many legal and practical constraints. To address this important challenge in the field of machine learning, we introduce a new technique and framework, known as federated transfer learning (FTL) to improve statistical modeling under a data federation. FTL allows knowledge to be shared without compromising user privacy and enables complementary knowledge to be transferred across domains in a data federation, thereby enabling a target domain party to build flexible and effective models by leveraging rich labels from a source domain. This framework requires minimal modifications to the existing model structure and provides the same level of accuracy as the nonprivacy preserving transfer learning. It is flexible and can be effectively adapted to various secure multiparty machine learning tasks.", "corpus_id": 219013245, "venue": "IEEE Intelligent Systems", "year": 2020, "author_names": [ "Yun-qiang Liu", "Yan Kang", "Chaoping Xing", "Tianjian Chen", "Qiang Yang" ], "n_citations": 90, "n_key_citations": 2, "score": 1 }, { "doc_id": "195772367", "title": "A transfer learning method with deep residual network for pediatric pneumonia diagnosis", "abstract": "BACKGROUND AND OBJECTIVE Computer aided diagnosis systems based on deep learning and medical imaging is increasingly becoming research hotspots. At the moment, the classical convolutional neural network generates classification results by hierarchically abstracting the original image. These abstract features are less sensitive to the position and orientation of the object, and this lack of spatial information limits the further improvement of image classification accuracy. Therefore, how to develop a suitable neural network framework and training strategy in practical clinical applications to avoid this problem is a topic that researchers need to continue to explore. METHODS We propose a deep learning framework that combines residual thought and dilated convolution to diagnose and detect childhood pneumonia. Specifically, based on an understanding of the nature of the child pneumonia image classification task, the proposed method uses the residual structure to overcome the over fitting and the degradation problems of the depth model, and utilizes dilated convolution to overcome the problem of loss of feature space information caused by the increment in depth of the model. Furthermore, in order to overcome the problem of difficulty in training model due to insufficient data and the negative impact of the introduction of structured noise on the performance of the model, we use the model parameters learned on large scale datasets in the same field to initialize our model through transfer learning. RESULTS Our proposed method has been evaluated for extracting texture features associated with pneumonia and for accurately identifying the performance of areas of the image that best indicate pneumonia. The experimental results of the test dataset show that the recall rate of the method on children pneumonia classification task is 96.7% and the f1 score is 92.7% Compared with the prior art methods, this approach can effectively solve the problem of low image resolution and partial occlusion of the inflammatory area in children chest X ray images. CONCLUSIONS The novel framework focuses on the application of advanced classification that directly performs lesion characterization, and has high reliability in the classification task of children pneumonia.", "corpus_id": 195772367, "venue": "Comput. Methods Programs Biomed.", "year": 2020, "author_names": [ "Gaobo Liang", "Lixin Zheng" ], "n_citations": 105, "n_key_citations": 9, "score": 0 }, { "doc_id": "199002096", "title": "Diagnosing Rotating Machines With Weakly Supervised Data Using Deep Transfer Learning", "abstract": "Rotating machinery fault diagnosis problems have been well addressed when sufficient supervised data of the tested machine are available using the latest data driven methods. However, it is still challenging to develop effective diagnostic method with insufficient training data, which is highly demanded in real industrial scenarios, since high quality data are usually difficult and expensive to collect. Considering the underlying similarities of rotating machines, data mining on different but related equipments potentially benefit the diagnostic performance on the target machine. Therefore, a novel transfer learning method for diagnostics based on deep learning is proposed in this article, where the diagnostic knowledge learned from sufficient supervised data of multiple rotating machines is transferred to the target equipment with domain adversarial training. Different from the existing studies, a more generalized transfer learning problem with different label spaces of domains is investigated, and different fault severities are also considered in fault diagnostics. The experimental results on four datasets validate the effectiveness of the proposed method, and show it is feasible and promising to explore different datasets to improve diagnostic performance.", "corpus_id": 199002096, "venue": "IEEE Transactions on Industrial Informatics", "year": 2020, "author_names": [ "Xiang Li", "Wei Zhang", "Qian Ding", "Xu Li" ], "n_citations": 71, "n_key_citations": 3, "score": 0 }, { "doc_id": "214795048", "title": "Detection of Coronavirus (COVID 19) Associated Pneumonia based on Generative Adversarial Networks and a Fine Tuned Deep Transfer Learning Model using Chest X ray Dataset", "abstract": "The COVID 19 coronavirus is one of the devastating viruses according to the world health organization. This novel virus leads to pneumonia, which is an infection that inflames the lungs' air sacs of a human. One of the methods to detect those inflames is by using x rays for the chest. In this paper, a pneumonia chest x ray detection based on generative adversarial networks (GAN) with a fine tuned deep transfer learning for a limited dataset will be presented. The use of GAN positively affects the proposed model robustness and made it immune to the overfitting problem and helps in generating more images from the dataset. The dataset used in this research consists of 5863 X ray images with two categories: Normal and Pneumonia. This research uses only 10% of the dataset for training data and generates 90% of images using GAN to prove the efficiency of the proposed model. Through the paper, AlexNet, GoogLeNet, Squeeznet, and Resnet18 are selected as deep transfer learning models to detect the pneumonia from chest x rays. Those models are selected based on their small number of layers on their architectures, which will reflect in reducing the complexity of the models and the consumed memory and time. Using a combination of GAN and deep transfer models proved it is efficiency according to testing accuracy measurement. The research concludes that the Resnet18 is the most appropriate deep transfer model according to testing accuracy measurement and achieved 99% with the other performance metrics such as precision, recall, and F1 score while using GAN as an image augmenter. Finally, a comparison result was carried out at the end of the research with related work which used the same dataset except that this research used only 10% of original dataset. The presented work achieved a superior result than the related work in terms of testing accuracy.", "corpus_id": 214795048, "venue": "ArXiv", "year": 2020, "author_names": [ "Nour Eldeen M Khalifa", "Mohamed Hamed N Taha", "Aboul Ella Hassanien", "Sally M Elghamrawy" ], "n_citations": 82, "n_key_citations": 2, "score": 0 } ]

[ { "doc_id": "117533006", "title": "A new dynamic predictive maintenance framework using deep learning for failure prognostics", "abstract": "In Prognostic Health and Management (PHM) literature, the predictive maintenance studies can be classified into two groups. The first group focuses on the prognostics step but does not consider the maintenance decisions. The second group addresses the maintenance optimization question based on the assumptions that the prognostics information or the degradation models of the system are already known. However, none of the two groups provides a complete framework (from data driven prognostics to maintenance decisions) investigating the impact of the imperfect prognostics on maintenance decision. Therefore, this paper aims to fill this gap of literature. It presents a novel dynamic predicive maintenance framework based on sensor measurements. In this framework, the prognostics step, based on the Long Short Term Memory network, is oriented towards the requirements of operation planners. It provides the probabilities that the system can fail in different time horizons to decide the moment for preparing and performing maintenance activities. The proposed framework is validated on a real application case study. Its performance is highlighted when compared with two benchmark maintenance policies: classical periodic and ideal predicted maintenance. In addition, the impact of the imperfect prognostics information on maintenance decisions is discussed in this paper.", "corpus_id": 117533006, "venue": "Reliab. Eng. Syst. Saf.", "year": 2019, "author_names": [ "Khanh T P Nguyen", "Kamal Medjaher" ], "n_citations": 71, "n_key_citations": 0, "score": 1 }, { "doc_id": "67405803", "title": "Predictive maintenance: strategic use of IT in manufacturing organizations", "abstract": "A combination of big data and predictive analytics orchestrated through the Internet of Things (IoT) offers many opportunities for researchers in Information Systems, Operations Management and Strategy to look at old problems in new ways, and to identify completely new research areas. While there is much hype, little research has been conducted that informs companies about how to profitably integrate the IoT with strategic or operational processes. This paper views the IoT through the lens of predictive maintenance the use of real time data and predictive analytics algorithms to dynamically manage preventive maintenance policies. These are being used by numerous manufacturing organizations to transition from product oriented to service oriented business models. In particular, we analyze optimal preventive maintenance policies in an environment where equipment is subject to a deterioration, which shifts it from its initial, fully productive state, having a specified, age dependent failure rate to a less productive or deteriorated state, having a different, presumably higher, age dependent failure rate. The deterioration, itself, is a random process.", "corpus_id": 67405803, "venue": "Inf. Syst. Frontiers", "year": 2019, "author_names": [ "Salvatore T March", "Gary D Scudder" ], "n_citations": 28, "n_key_citations": 0, "score": 1 }, { "doc_id": "199541019", "title": "Sensing and Quality Monitoring Facilities Designed for Pasta Industry Including Traceability, Image Vision and Predictive Maintenance", "abstract": "This paper analyzes different facilities useful for pasta industry. These proposed topics are studied during the development of a research industry project involving the design of tools suitable for production sensing and actuation processes allowing automation. After a discussion about architecture design containing facilities, the attention has been focused on production traceability, image vision quality inspection and predictive maintenance. The predictive maintenance has been implemented by an artificial neural network algorithm able to predict humidity in a controlled environment. The proposed model is suitable for Industry 4.0 implementing internet of things IoT devices.", "corpus_id": 199541019, "venue": "2019 II Workshop on Metrology for Industry 4.0 and IoT (MetroInd4.0&IoT)", "year": 2019, "author_names": [ "Alessandro Massaro", "I Manfredonia", "Angelo Maurizio Galiano", "Leonardo Pellicani", "Vitangelo Birardi" ], "n_citations": 14, "n_key_citations": 1, "score": 1 }, { "doc_id": "37287290", "title": "Forecasting fault events for predictive maintenance using data driven techniques and ARMA modeling", "abstract": "Abstract Presently, time based airline maintenance scheduling does not take fault predictions into account, but happens at fixed time intervals. This may result in unnecessary maintenance interventions and also in situations where components are not taken out of service despite exceeding their designed risk of failure. To address this issue we propose a framework that can predict when a component/system will be at risk of failure in the future, and therefore, advise when maintenance actions should be taken. In order to facilitate such prediction, we employ an auto regressive moving average (ARMA) model along with data driven techniques, and compare the performance of multiple data driven techniques. The ARMA model adds a new feature that is used within the data driven model to give the final prediction. The novelty of our work is the integration of the ARMA methodology with data driven techniques to predict fault events. This study reports on a real industrial case of unscheduled removals of a critical valve of the aircraft engine. Our results suggest that the support vector regression model can outperform the life usage model on the evaluation measures of sample standard deviation, median error, median absolute error, and percentage error. The generalized linear model provides an effective approach for predictive maintenance with comparable results to the baseline. The remaining data driven models have a lower overall performance.", "corpus_id": 37287290, "venue": "Comput. Ind. Eng.", "year": 2018, "author_names": [ "Marcia Baptista", "Shankar Sankararaman", "Ivo Paixao de Medeiros", "Cairo L Nascimento", "Helmut Prendinger", "Elsa M P Henriques" ], "n_citations": 89, "n_key_citations": 5, "score": 0 }, { "doc_id": "114284502", "title": "Cloud enhanced predictive maintenance", "abstract": "Maintenance of assembly and manufacturing equipment is crucial to ensure productivity, product quality, on time delivery, and a safe working environment. Predictive maintenance is an approach that utilises the condition monitoring data to predict the future machine conditions and makes decisions upon this prediction. The main aim of the present research is to achieve an improvement in predictive condition based maintenance decision making through a cloud based approach with usage of wide information content. For the improvement, it is crucial to identify and track not only condition related data but also context data. Context data allows better utilisation of condition monitoring data as well as analysis based on a machine population. The objective of this paper is to outline the first steps of a framework and methodology to handle and process maintenance, production, and factory related data from the first lifecycle phase to the operation and maintenance phase. Initial case study aims to validate the work in the context of real industrial applications.", "corpus_id": 114284502, "venue": "", "year": 2018, "author_names": [ "Bernard Schmidt", "Lihui Wang" ], "n_citations": 35, "n_key_citations": 4, "score": 0 }, { "doc_id": "46966377", "title": "Single machine based joint optimization of predictive maintenance planning and production scheduling", "abstract": "Abstract Maintenance planning and production scheduling are two activities that are inter dependent but most often performed independently in manufacturing. The maintenance planning affects both available production time and failure probability. However, in previous research, the maintenance planning only considers preventive maintenance and may result in maintenance shortage or overage. And the deterioration and health status of machines from prognostics are often ignored. The paper presents an integrated decision model that coordinates predictive maintenance decisions based on prognostics information with a single machine scheduling decisions so that the total expected cost is minimized. In the integrated model, the health status and dummy age subjected to machine degradation is considered. Finally, a case study is used to demonstrate the value of the proposed methods. And the performance of the integrated solution is compared with solutions obtained from solving the predictive maintenance planning and production scheduling problems independently. The results prove its efficiency.", "corpus_id": 46966377, "venue": "", "year": 2018, "author_names": [ "Qinming Liu", "Ming Dong", "F Frank Chen", "Wenyuan Lv", "Chunming Ye" ], "n_citations": 63, "n_key_citations": 2, "score": 0 }, { "doc_id": "67244234", "title": "The role of data fusion in predictive maintenance using digital twin", "abstract": "Modern aerospace industry is migrating from reactive to proactive and predictive maintenance to increase platform operational availability and efficiency, extend its useful life cycle and reduce its life cycle cost. Multiphysics modeling together with data driven analytics generate a new paradigm called \"Digital Twin.\" The digital twin is actually a living model of the physical asset or system, which continually adapts to operational changes based on the collected online data and information, and can forecast the future of the corresponding physical counterpart. This paper reviews the overall framework to develop a digital twin coupled with the industrial Internet of Things technology to advance aerospace platforms autonomy. Data fusion techniques particularly play a significant role in the digital twin framework. The flow of information from raw data to high level decision making is propelled by sensor to sensor, sensor to model, and model to model fusion. This paper further discusses and identifies the role of data fusion in the digital twin framework for aircraft predictive maintenance.Modern aerospace industry is migrating from reactive to proactive and predictive maintenance to increase platform operational availability and efficiency, extend its useful life cycle and reduce its life cycle cost. Multiphysics modeling together with data driven analytics generate a new paradigm called \"Digital Twin.\" The digital twin is actually a living model of the physical asset or system, which continually adapts to operational changes based on the collected online data and information, and can forecast the future of the corresponding physical counterpart. This paper reviews the overall framework to develop a digital twin coupled with the industrial Internet of Things technology to advance aerospace platforms autonomy. Data fusion techniques particularly play a significant role in the digital twin framework. The flow of information from raw data to high level decision making is propelled by sensor to sensor, sensor to model, and model to model fusion. This paper further discusses and identifies the", "corpus_id": 67244234, "venue": "", "year": 2018, "author_names": [ "Zheng Liu", "Norbert G H Meyendorf", "Nezih Mrad" ], "n_citations": 61, "n_key_citations": 3, "score": 0 }, { "doc_id": "49272171", "title": "A research study on unsupervised machine learning algorithms for early fault detection in predictive maintenance", "abstract": "The area of predictive maintenance has taken a lot of prominence in the last couple of years due to various reasons. With new algorithms and methodologies growing across different learning methods, it has remained a challenge for industries to adopt which method is fit, robust and provide most accurate detection. Fault detection is one of the critical components of predictive maintenance; it is very much needed for industries to detect faults early and accurately. In a production environment, to minimize the cost of maintenance, sometimes it is required to build a model with minimal or no historical data. In such cases, unsupervised learning would be a better option model building. In this paper, we have chosen a simple vibration data collected from an exhaust fan, and have fit different unsupervised learning algorithms such as PCA T2 statistic, Hierarchical clustering, K Means, Fuzzy C Means clustering and model based clustering to test its accuracy, performance, and robustness. In the end, we have proposed a methodology to benchmark different algorithms and choosing the final model.", "corpus_id": 49272171, "venue": "2018 5th International Conference on Industrial Engineering and Applications (ICIEA)", "year": 2018, "author_names": [ "Nagdev Amruthnath", "Tarun Gupta" ], "n_citations": 66, "n_key_citations": 2, "score": 0 }, { "doc_id": "52148890", "title": "Machine Learning approach for Predictive Maintenance in Industry 4.0", "abstract": "Condition monitoring together with predictive maintenance of electric motors and other equipment used by the industry avoids severe economic losses resulting from unexpected motor failures and greatly improves the system reliability. This paper describes a Machine Learning architecture for Predictive Maintenance, based on Random Forest approach. The system was tested on a real industry example, by developing the data collection and data system analysis, applying the Machine Learning approach and comparing it to the simulation tool analysis. Data has been collected by various sensors, machine PLCs and communication protocols and made available to Data Analysis Tool on the Azure Cloud architecture. Preliminary results show a proper behavior of the approach on predicting different machine states with high accuracy.", "corpus_id": 52148890, "venue": "2018 14th IEEE/ASME International Conference on Mechatronic and Embedded Systems and Applications (MESA)", "year": 2018, "author_names": [ "Marina Paolanti", "L Romeo", "Andrea Felicetti", "Adriano Mancini", "E Frontoni", "Jelena Loncarski" ], "n_citations": 31, "n_key_citations": 4, "score": 0 }, { "doc_id": "49679953", "title": "Anomaly detection and predictive maintenance for photovoltaic systems", "abstract": "Abstract We present a learning approach designed to detect possible anomalies in photovoltaic (PV) systems in order to let an operator to plan predictive maintenance interventions. The anomaly detection algorithm presented is based on the comparison between the measured and the predicted values of the AC power production. The model designed to predict the AC power production is based on an Artificial Neural Network (ANN) that is capable of estimating the AC power production using solar irradiance and PV panel temperature measurements, and that is trained using a dataset previously gathered from the plant to be monitored. Live trend data coming from the PV system are then compared with the output of the model and the vector of residuals is analyzed to detect anomalies and generate daily predictive maintenance alerts; there residuals are aggregated over 1 day and processed to detect out of threshold samples and system degradation trends; these trends are extracted by computing the Triangular Moving Average (TMA) where the window size is automatically determined. The paper also reports experimental data results revealing that the model leads to a good anomaly detection rate, which is measured as a positive predictive detection rate greater than 90% Moreover, the algorithm is able to recognize trends of system's deviations from normal operation behavior and generate predictive maintenance alerts as a decision support system for operatives, with the aim of avoiding possible incoming failures.", "corpus_id": 49679953, "venue": "Neurocomputing", "year": 2018, "author_names": [ "Massimiliano De Benedetti", "Fabio Leonardi", "Fabrizio Messina", "Corrado Santoro", "Athanasios V Vasilakos" ], "n_citations": 43, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "219062884", "title": "Autistic traits and social skills in Chinese college students: Mediating roles of adult attachment styles and empathy", "abstract": "Autistic traits (ATs) are considered a set of primary symptoms of autism spectrum disorders (ASD) and are postulated to be continuously distributed in the general population. Prior findings suggest that impairment of social skills results in interpersonal difficulties in ASDs. However, there are few studies examining the possible negative effects of ATs on social skills in the general population and the specific mechanism. The current study explored the influence of ATs on social skills and the mediating role of adult attachment styles and multimodal empathy. The results showed that ATs reduced social skills directly and indirectly through complex mediation by adult attachment styles and multimodal empathy. The findings revealed the internal mechanism by which ATs impede social skills, and expands our understanding of social behaviour in ASD and ATs in the general population. Furthermore, the results have implications for social skills interventions for individuals with ASD and those with high levels of ATs.", "corpus_id": 219062884, "venue": "", "year": 2020, "author_names": [ "Yu Jin", "Xiaohui Chen", "Xudong Zhao" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "198170422", "title": "Efficacy and social validity of procedures for improving conversational skills of college students with autism.", "abstract": "Better conversational skills correspond to a higher quality of life for adults diagnosed with autism spectrum disorder (ASD) In this study, we taught vocal verbal responses discriminated by compound arrangements of concealed conversation partner mands to two college students with ASD. Participants learned to engage in self questioning about their conversation partner's behavior and to reinforce three concealed mands for termination of an aversive conversation scenario. We assessed generalization to conversation probes with trained confederates and to interactions with untrained conversational partners (e.g. peers, professors) Finally, we collected peer ratings of the social validity of changes in conversational behavior as well as participants' ratings of study goals, procedures, and outcomes.", "corpus_id": 198170422, "venue": "Journal of applied behavior analysis", "year": 2019, "author_names": [ "Charlotte C Mann", "Amanda M Karsten" ], "n_citations": 7, "n_key_citations": 0, "score": 1 }, { "doc_id": "221622200", "title": "The Relationships Among Autism Spectrum Disorder Traits, Loneliness, and Social Networking Service Use in College Students.", "abstract": "This study aimed to explore the relationships among autism spectrum disorder (ASD) traits, loneliness, and social networking services (SNS) use. We created a questionnaire to evaluate manners during LINE use, which included five factors: \"low literacy,\" \"inactive use,\" \"low responsiveness,\" \"lack of consideration,\" and \"low group activity.\" Structural equation modeling revealed that difficulties in attention switching and low communication skills were associated with low literacy, low social skills were associated with inactive use, and low literacy and inactive use were associated with loneliness. We suggested that SNS use plays a role in maintaining and enhancing friendships, whereas college students with higher ASD traits tend to use inappropriate manners for SNS, which is associated with loneliness.", "corpus_id": 221622200, "venue": "Journal of autism and developmental disorders", "year": 2020, "author_names": [ "Kota Suzuki", "Yuhei Oi", "Masumi Inagaki" ], "n_citations": 0, "n_key_citations": 0, "score": 3 }, { "doc_id": "146197578", "title": "Bottom Line: Who Pays for Communication Skills and Autism Services for Young Adults?Young adults with autism need help with social interaction and communication to get jobs or attend college, but health care funding rarely covers their speech language treatment.", "abstract": "Young adults with autism need help with social interaction and communication to get jobs or attend college, but health care funding rarely covers their speech language treatment.", "corpus_id": 146197578, "venue": "", "year": 2013, "author_names": [ "Janet McCarty" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "151777580", "title": "A proposal for an evidence based online course to support executive functioning and social skills in postsecondary students with autism spectrum disorder", "abstract": "The population of young adults with autism spectrum disorder (ASD) is growing as more individuals with ASD age into adulthood. Almost half of the children diagnosed with ASD who were surveyed in 2010 demonstrated average or above average intelligence (CDC, 2014) Despite promising intellectual abilities, only 17.4% of young adults with ASD enroll in a four year college, and only 38.8% of students with ASD graduate postsecondary education within eight years of leaving high school (Newman et al. 2011) Therefore, there is a growing niche for postsecondary support programs specifically designed for students with ASD. This doctoral project includes two parts: the development of an evidence based online course for postsecondary students with ASD and the proposed evaluation of the online course. There are five theoretical reasons for poor postsecondary outcomes for young adults with ASD: (1) the increasing prevalence of ASD, (2) the absence of a \"golden standard\" in postsecondary transition for young adults with ASD, (3) the existing differences between educational and disability rights legislation at the secondary and", "corpus_id": 151777580, "venue": "", "year": 2015, "author_names": [ "Amanda Julianna Matteo" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "197698960", "title": "Improving Daily Living Skills in College Students with Autism Spectrum Disorder Using a Peer Mediated Daily Living Checklist Intervention", "abstract": "Author(s) Engstrom, Erin Advisor(s) Vernon, Ty; Koegel, Robert L Abstract: Research suggests individuals with Autism Spectrum Disorder (ASD) have difficulties with daily living skills that affect adaptive behavior, which are a major barrier to success in higher education settings. Adaptive behavior has been shown to be the single strongest predictor of positive outcomes for individuals with ASD, yet few interventions target the improvement of daily living skills within this population, with even fewer targeting college students. Since interventions that integrate motivational and peer mediated components have improved social communication in adults with ASD, it is possible that incorporating these methods into a daily living checklist, a type of self management intervention, may lead to improvements in daily living skills for this population as well. The purpose of this study was to assess whether the use of peer mediated motivational components would increase (1) the percentage of targeted daily living tasks completed per week. In addition, data was collected to systematically examine if this intervention would (2) increase measures of adaptive behavior skill; (3) decrease symptoms of depression; (4) decrease symptoms of anxiety; (5) increase measures of overall quality of life, and (6) improve quarterly academic grade reports. Three college students with ASD between the ages of 18 and 20 participated. A multiple baseline across participants design was used, where a baseline condition with a self management daily living checklist without peer mediation was compared to a peer mediated intervention condition with check ins by a peer mentor to complete the daily living checklist. Follow up data were collected for two participants four weeks after the completion of the intervention. (1) All participants increased the percentage of targeted daily living skill tasks completed each week with large effect sizes, with effects maintained at follow up for two participants. (2) All participants demonstrated some improvement on subdomains of the Daily Living Skill domain on the VABS III, and 2 participants improved their overall Adaptive Behavior Composite score on the VABS III. (3) All participants decreased their total score on the BDI II. (4) Two participants decreased their total score on the BAI. Additionally, (5) all participants maintained good ratings of quality of life as measured by the QLAA. Finally (6) 2 participants demonstrated maintenance of good academic standing following completion of the intervention. Results are discussed in regards to assisting college students with ASD with improving their daily living skills. Additionally, implications of findings and future directions related to the examination of collateral areas relating to mental health, quality of life, and academic performance are explored. Further research would be helpful to continue to develop and examine interventions to assist college students with ASD to live independently and successfully.", "corpus_id": 197698960, "venue": "", "year": 2019, "author_names": [ "Erin Engstrom" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "151317934", "title": "The use of musically adapted social stories to build social skills in individuals with autism spectrum disorder", "abstract": "DISSERTATION: The Use of Musically Adapted Social Stories to Build Social Skills in Individuals with Autism Spectrum Disorder STUDENT: Kaitlin B. Cowan DEGREE: Doctor of Philosophy COLLEGE: Teacher's College DATE: December 2016", "corpus_id": 151317934, "venue": "", "year": 2016, "author_names": [ "Kaitlin Beth Cowan" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "6065043", "title": "Effects of video modeling on communicative social skills of college students with asperger syndrome", "abstract": "Introduction: Empirical support regarding effective interventions for individuals with autism spectrum disorder (ASD) within a postsecondary community is limited. Video modeling, an empirically supported intervention for children and adolescents with ASD, may prove effective in addressing the needs of individuals with ASD in higher education. Objective: This study evaluated the effects of video modeling without additional treatment components to improve social communicative skills, specifically, eye contact, facial expression, and conversational turntaking in college students with ASD. Method: This study utilized a multiple baseline single case design across behaviors for two post secondary students with ASD to evaluate the effects of the video modeling intervention. Results: Large effect sizes and statistically significant change across all targeted skills for one participant and eye contact and turntaking for the other participant were obtained. Conclusion: The use of video modeling without additional intervention may increase the social skills of post secondary students with ASD. Implications for future research are discussed.", "corpus_id": 6065043, "venue": "Developmental neurorehabilitation", "year": 2012, "author_names": [ "Rose A Mason", "Mandy Jenkins Rispoli", "Jennifer B Ganz", "Margot B Boles", "Kristie Scrutchfield Orr" ], "n_citations": 56, "n_key_citations": 6, "score": 0 }, { "doc_id": "151384153", "title": "Development of interaction during a social skills intervention group for emerging adults with autism spectrum disorders (ASD) A case study", "abstract": "It has been proposed individuals with autism spectrum disorder (ASD) may benefit from social skills support across the lifespan; however little is currently known about how to best structure social skills instruction for adults with ASD. A biweekly social skills group employing a naturalistic instructional discourse approach was conducted with four emerging adults with ASD who attended a college based inclusion program at a large state university. The intervention focused on developing participants' understanding of a partner's expectations related to appropriate responding to questions, comments, and short response tokens. Sessions were transcribed verbatim and coded to support detailed analysis. Feedback was solicited from participants, the program teacher, and neurotypical (NT) peers to investigate the social validity of this intervention. A case study approach supported in depth description of development over time in participantto participant interaction, participant involvement in social and instructional discussion, and participant attitude toward group activities. Emerging adults with ASD demonstrated an increased amount of contribution to group conversation and showed improvements in positive participant to participant interaction. Over the course of this group, social interaction time increased while instructional interaction time decreased. Implications for designing future group based social skills interventions for emerging adults with ASD are discussed.", "corpus_id": 151384153, "venue": "", "year": 2014, "author_names": [ "Megan Colleen Tobin" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "12031090", "title": "Social Skills Training for Young Adults with Autism Spectrum Disorder Overview and Implications for Practice", "abstract": "Social skills training for individuals with autism spectrum disorder is essential across the developmental lifespan. However, literature on this topic has historically focused on preschoolers and elementary students rather than adolescents and young adults. Adolescents and young adults with autism spectrum disorder encounter unique social challenges in college settings, employment environments, and communities. Thus, social skills training for this population must adapt to the needs of the individual leading to complexities for educators during the development, implementation, and monitoring of the training protocol. The current article provides an overview of social skills training relevant to adolescent and young adults with autism spectrum disorder and implications for practice are", "corpus_id": 12031090, "venue": "", "year": 2013, "author_names": [ "", "Patricia S Arter", "Christie Sworen-Parise", "Michael Faseiana", "Marcie A Panihamus" ], "n_citations": 15, "n_key_citations": 2, "score": 0 } ]

[ { "doc_id": "192975798", "title": "Princess, Abbess, Archbishop, Virgin: Text, Music, and Gender in the Office of Saint Ursula", "abstract": "", "corpus_id": 192975798, "venue": "", "year": 2008, "author_names": [ "Lisa Colton" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "161511374", "title": "Hagiography and History: The LEgend of Saint Ursula", "abstract": "", "corpus_id": 161511374, "venue": "", "year": 2008, "author_names": [ "Carole M Cusack" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "162301484", "title": "Isabella, Marina, and Saint Ursula", "abstract": "", "corpus_id": 162301484, "venue": "", "year": 2007, "author_names": [ "Andrew Hadfield" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "161472508", "title": "\"Hildegard of Birgen (1098 1179) The lauds of Saint Ursula\" Thomas Binkley, Bloomington 1991 [recenzja] Jerzy Morawski.", "abstract": "", "corpus_id": 161472508, "venue": "", "year": 1992, "author_names": [ "Jerzy Morawski", "Thomas Binkley" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "192096275", "title": "\"The Lauds of Saint Ursula: Hildegard of Bingen (1098 1179)\" Thomas Binkley, dir. Early Music Institute, Indiana University School of Music.", "abstract": "", "corpus_id": 192096275, "venue": "", "year": 1993, "author_names": [ "Marianne Richert Pfau" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "194932086", "title": "The Recently Discovered Underdrawings of the Master of the Saint Ursula Legend's \"Triptych of the Nativity\"", "abstract": "", "corpus_id": 194932086, "venue": "Bulletin of the Detroit Institute of Arts", "year": 1987, "author_names": [ "Molly Faries", "Barbara Heller", "Daniel Levine" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "161875077", "title": "\"The Passion of Saint Ursula (Regnante Domino)\" transl. by Pamela Sheingorn and Marcelle Thiebaux, Toronto, wyd. 1, 1990, wyd. 2, 1991 [recenzja] R. Grz.", "abstract": "", "corpus_id": 161875077, "venue": "", "year": 1997, "author_names": [ "Ryszard Grzesik", "Pamela Sheingorn", "Marcelle Thiebaux" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "63935602", "title": "History and Implementation of the Vow of Instruction in the Order of Saint Ursula", "abstract": "", "corpus_id": 63935602, "venue": "", "year": 1949, "author_names": [ "M Joyce O S U Georgel" ], "n_citations": 0, "n_key_citations": 0, "score": 2 }, { "doc_id": "192335631", "title": "The Departure of Saint Ursula (As Painted by Carpaccio) [Poem]", "abstract": "", "corpus_id": 192335631, "venue": "", "year": 1959, "author_names": [ "Allyn Wood" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "190955801", "title": "Chants for Saint Ursula and companions", "abstract": "", "corpus_id": 190955801, "venue": "", "year": 1998, "author_names": [ "Saint Hildegard", "Marianne Richert Pfau" ], "n_citations": 0, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "229126105", "title": "EC 842 GESTION D'ENTREPRISE ET ANALYSE FINANCIERE", "abstract": "", "corpus_id": 229126105, "venue": "", "year": 2020, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "212814386", "title": "GESTION D'ENTREPRISE", "abstract": "", "corpus_id": 212814386, "venue": "", "year": 2019, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "150330804", "title": "Optimisation de decisions economiques concurrentielles dans un simulateur de gestion d'entreprise", "abstract": "Les technologies du numerique s'invitent de plus en plus dans l'enseignement. Les nouvelles pratiques pedagogiques revolutionnent egalement les standards de la formation. La gamification des cursus est, par exemple, devenue une tendance actuelle. Elle permet, par le jeu, d'exercer les apprenants differemment. Les simulations de gestion d'entreprise entrent dans ce cadre. Elles positionnent les stagiaires a la tete d'entreprises virtuelles et simulent un marche concurrentiel. Le deploiement de cette pratique se heurte neanmoins a des difficultes operationnelles taille du groupe, formation de l'animateur. C'est dans ce contexte que nous envisageons la mise en oeuvre d'agents autonomes permettant d'accompagner ou de concurrencer les apprenants.Pour cela, nous proposons, tout d'abord, une modelisation performante d'une entreprise a base de programmes lineaires mixtes permettant l'optimisation des departements internes des entreprises (production, distribution, finance) Ensuite, nous introduisons une heuristique de recherche locale afin de generer des solutions performantes dans un environnement economique. Aussi, a la suite d'une phase d'extraction de connaissances, nous proposons la definition et la construction d'arbres d'anticipation qui permettent de prevoir les decisions concurrentielles des protagonistes engages et ainsi de pouvoir estimer la qualite des solutions construites. Afin de valider les approches proposees, nous les avons comparees aux comportements reels de joueurs et avons evalue l'apport de l'exploitation de la connaissance. Enfin, nous avons propose une generalisation de la methode a d'autres simulateurs de gestion d'entreprise.", "corpus_id": 150330804, "venue": "", "year": 2017, "author_names": [ "Sylvain Dufourny" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "198826351", "title": "Marketing, economie, gestion d'entreprise et de RH", "abstract": "", "corpus_id": 198826351, "venue": "", "year": 2018, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "190438487", "title": "Concours etudiants de gestion d'entreprise", "abstract": "", "corpus_id": 190438487, "venue": "", "year": 2018, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "194645881", "title": "Management d'entreprise 360deg Principes et outils de la gestion d'entreprise", "abstract": "En combinant videos, texte et nombreuses figures, ce manuel propose une approche pedagogique inedite pour faire decouvrir les fondamentaux du management.Cette introduction a l'entreprise adopte la perspective a 360deg de la direction generale pour aborder les questions transversales (gouvernance, strategie, organisation, innovation) et les questions relevant des differentes fonctions (operations, finance, SI, marketing, RH) Chaque chapitre comporte des exemples d'entreprise, de nombreuses figures, et un quiz de verification des connaissances.Les videos (environ 60 videos, pour une duree totale de 20 heures) offrent une approche vivante du meme cours. Elles sont realisees par l'auteur, qui commente de facon dynamique et didactique un support de presentation complementaire (figures complementaires, exemples detailles) c'est l'equivalent filme de son cours dispense au Cnam, ou le lecteur est accompagne dans son apprentissage par un pedagogue experimente. La combinaison livre video et la mise a disposition permanente des deux supports lui permet d'aller a son rythme, de relire ou revisionner, pour decouvrir, assimiler, approfondir, s'evaluer, reviser, revenir sur un point.", "corpus_id": 194645881, "venue": "", "year": 2016, "author_names": [ "Thomas C Durand" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "216798405", "title": "Introduction a la gestion d'entreprise 2", "abstract": "", "corpus_id": 216798405, "venue": "", "year": 2017, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "200898472", "title": "Introduction a la gestion d'entreprise", "abstract": "", "corpus_id": 200898472, "venue": "", "year": 2017, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "161831129", "title": "Cas pratiques en Bonne Gestion d'Entreprise", "abstract": "A travers notre collaboration permanente avec l'Association DELTA et ses reseaux, nous fournissons une base de donnees de plusieurs cas d'applications en eco management dans des PME, du Maghreb et du Machrek, de divers secteurs industriels. Ces cas p", "corpus_id": 161831129, "venue": "", "year": 2017, "author_names": [ "Giroud Sarah" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "232505986", "title": "Gestion d'entreprise et mangement", "abstract": "", "corpus_id": 232505986, "venue": "", "year": 2017, "author_names": [ "" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "219776934", "title": "Surface Defect Detection for Mobile Phone Back Glass Based on Symmetric Convolutional Neural Network Deep Learning", "abstract": "Defect detection based on machine vision and machine learning techniques has drawn much attention in recent years. Deep learning is very suitable for such segmentation and detection tasks and has become a promising research area. Surface quality inspection is essentially important in the manufacturing of mobile phone back glass (MPBG) Different types of defects are produced because of the imperfection of the manufacturing technique. Unlike general transparent glass, screen printing glass has totally different reflection and scattering characteristics, which means the traditional dark field imaging system is not suitable for this task. Meanwhile, the imaging system requires high resolution since the minimum defect size can be 0.005 mm2. According to the imaging characteristics of screen printing glass, this paper proposes a coaxial bright field (CBF) imaging system and low angle bright field (LABF) imaging system, and 8K line scan complementary metal oxide semiconductor(CMOS) cameras are utilized to capture images with the resolution size of 16,000*8092. The CBF system is applied for the weak scratch and discoloration defects while the LABF system is applied for the dent defect. A symmetric convolutional neural network composed of encoder and decoder structures is proposed based on U net, which produces a semantic segmentation with the same size as the original input image. More than 10,000 original images were captured, and more than 30,000 defective and non defective images were manually annotated in the glass surface defect dataset (GSDD) Verified by the experiments, the results showed that the average precision reaches more than 91% and the average recall rate reaches more than 95% The method is very suitable for the surface defect inspection of screen printing mobile phone back glass.", "corpus_id": 219776934, "venue": "", "year": 2020, "author_names": [ "Jia-Bin Jiang", "Pin Cao", "Zichen Lu", "Weimin Lou", "Yongying Yang" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "210232808", "title": "A Fast Surface Defect Detection Method Based on Background Reconstruction", "abstract": "In this paper, we propose an unsupervised background reconstruction method to detect defects on surfaces with unevenly distributed textures. An improved deep convolutional autoencoder is utilized to reconstruct the textured background of the original image as a defect free reference. Specifically, a weighted loss function based on structural similarity (SSIM) is utilized to adapt to the unevenly distributed texture background and improve the reconstruction accuracy. Furthermore, combined with the reconstructed defect free reference, a novel difference analysis method based on the discrete cosine transform (DCT) is given to accurately segment the defect regions from the original image. A series of experiments for the defect detection on mobile phone cover glass (MPCG) are conducted. The processing time for an image of 512 x 512 pixels is only 20 ms, which satisfies the requirement of online detection. The experimental results verify the effectiveness of the proposed method.", "corpus_id": 210232808, "venue": "International Journal of Precision Engineering and Manufacturing", "year": 2019, "author_names": [ "Chengkan Lv", "Zheng-Tao Zhang", "Fei Shen", "Feifei Zhang", "Hu Su" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "219726774", "title": "Anomaly Detection Neural Network with Dual Auto Encoders GAN and Its Industrial Inspection Applications", "abstract": "Recently, researchers have been studying methods to introduce deep learning into automated optical inspection (AOI) systems to reduce labor costs. However, the integration of deep learning in the industry may encounter major challenges such as sample imbalance (defective products that only account for a small proportion) Therefore, in this study, an anomaly detection neural network, dual auto encoder generative adversarial network (DAGAN) was developed to solve the problem of sample imbalance. With skip connection and dual auto encoder architecture, the proposed method exhibited excellent image reconstruction ability and training stability. Three datasets, namely public industrial detection training set, MVTec AD, with mobile phone screen glass and wood defect detection datasets, were used to verify the inspection ability of DAGAN. In addition, training with a limited amount of data was proposed to verify its detection ability. The results demonstrated that the areas under the curve (AUCs) of DAGAN were better than previous generative adversarial network based anomaly detection models in 13 out of 17 categories in these datasets, especially in categories with high variability or noise. The maximum AUC improvement was 0.250 (toothbrush) Moreover, the proposed method exhibited better detection ability than the U Net auto encoder, which indicates the function of discriminator in this application. Furthermore, the proposed method had a high level of AUCs when using only a small amount of training data. DAGAN can significantly reduce the time and cost of collecting and labeling data when it is applied to industrial detection.", "corpus_id": 219726774, "venue": "Sensors", "year": 2020, "author_names": [ "Tang Tang", "Wei-Han Kuo", "Jauh-Hsiang Lan", "Chien-Fang Ding", "Hakiem Hsu", "Hong-Tsu Young" ], "n_citations": 11, "n_key_citations": 0, "score": 1 }, { "doc_id": "213469658", "title": "Analyzing sustainable performance on high precision molding process of 3D ultra thin glass for smart phone", "abstract": "Abstract Ultra thin curved (2.5D, 3D) glass is widely used in the most recently developed smartphones, and the market demand for it is steadily increasing. The high precision ultra thin glass molding process (UTGMP) is very important in the fabrication of high quality 2.5D/3D ultra thin glass for smartphones; however, the UTGMP, with its high energy consumption and low pass rate, is not considered to be environment friendly. Therefore, in this study, the sustainability of the molding process for 3D ultra thin glass was comprehensively investigated. First, the ultra thin 3D glass molding process is described, including a discussion of the glass molding apparatus, and the principle of glass thermos formation is explained. Secondly, a thermo mechanical coupling model is proposed to study the effects of loading heat and pressure on the distributions of temperature and internal stress of ultra thin glass. The results demonstrate that significant amounts of stress were concentrated at the edges, and in holes and slots. A series of experiments were conducted to reveal the respective effect of various UTGMP parameters on the energy consumption, pass rate, and carbon emission level of the process. Consequently, the percentage of the main effect of loading temperature on energy consumption was found to be 23.65% whereas that of the duration of applied pressure on the pass rate was determined to be 52.48% The optimal process parameter combinations were determined by analyzing the above mentioned research results and subsequently implementing them in a hybrid intelligent optimization algorithm that utilizes quantum behaved particle swarm optimization (QPSO) and a back propagation neural network (BPNN) The algorithm revealed that energy consumption and carbon emissions can be respectively decreased by 3.39% and 3.45% at a relatively high pass rate (i.e. over 70% Eventually, the suggested combinations for the UTGMP will be able to achieve at least 60% 76% of the pass rate, as well as consume no more than 0.756 kW h/pcs to meet sustainable manufacturing requirements. Thus, this study contributes to the effective application of a high precision glass molding process for the sustainable manufacturing of ultra thin curved glass.", "corpus_id": 213469658, "venue": "", "year": 2020, "author_names": [ "Zhen Bin Zhang", "Wuyi Ming", "Yi Zhang", "Ling Yin", "Tao Xue", "Zhijun Chen", "Dunming Liao", "Guojun Zhang" ], "n_citations": 7, "n_key_citations": 0, "score": 0 }, { "doc_id": "201890408", "title": "A Surface Defect Detection Framework for Glass Bottle Bottom Using Visual Attention Model and Wavelet Transform", "abstract": "Glass bottles must be thoroughly inspected before they are used for packaging. However, the vision inspection of bottle bottoms for defects remains a challenging task in quality control due to inaccurate localization, the difficulty in detecting defects in the texture region, and the intrinsically nonuniform brightness across the central panel. To overcome these problems, we propose a surface defect detection framework, which is composed of three main parts. First, a new localization method named entropy rate superpixel circle detection (ERSCD) which combines least squares circle detection and entropy rate superpixel (ERS) with an improved randomized circle detection, is proposed to accurately obtain the region of interest (ROI) of the bottle bottom. Then, according to the structure property, the ROI is divided into two measurement regions: central panel region and annular texture region. For the former, a defect detection method named frequency tuned anisotropic diffusion super pixel segmentation (FTADSP) that integrates frequency tuned salient region detection (FT) anisotropic diffusion, and an improved superpixel segmentation is proposed to precisely detect the regions and boundaries of defects. For the latter, a defect detection strategy called wavelet transform multiscale filtering (WTMF) based on a wavelet transform and a multiscale filtering algorithm is proposed to reduce the influence of texture and to improve the robustness to localization error. The proposed framework is tested on four data sets obtained by our designed vision system. The experimental results demonstrate that our framework achieves the best performance compared with many traditional methods.", "corpus_id": 201890408, "venue": "IEEE Transactions on Industrial Informatics", "year": 2020, "author_names": [ "Xianen Zhou", "Yaonan Wang", "Qing Zhu", "Jianxu Mao", "Changyan Xiao", "Xiao Lu", "Huixia Zhang" ], "n_citations": 18, "n_key_citations": 0, "score": 1 }, { "doc_id": "218528037", "title": "In vivo bioactivity assessment of strontium containing soda lime borate glass implanted in femoral defect of rat", "abstract": "Most of previous works studied the bioactivity of tertiary soda lime borate as in vitro method, but, there have been no previous studies investigated the in vivo compatibility of such glass. This work was mainly aimed at in vivo assessment of bone formation of tertiary soda lime borate bioactive glass doped with Sr. the glass composition was based on 60 B 2 O 3 20 Na 2 O (20 x CaO x SrO (wt% where, x 0 and 10 wt% (samples encoded B0 and BS, respectively) The in vivo test was conducted in femoral bone defect of Sprague Dawley adult male rats after 3 and 6 weeks post surgery using the histological analyses and bone formation markers (alkaline phosphatase (ALP) and osteocalcin (OCN) Moreover, the possible systemic toxicity was studied using different biochemical analyses (alanine transaminase, aspartate transaminase, urea and creatinine) The result of bone markers showed that serum OCN level increased in rat implanted with sample B0 than that observed in sample BS at 3 and 6 weeks post implantation, while this finding was reversed in ALP activity. In vivo bioactivity test showed that implantation of all borate glasses did not demonstrate local or general complications in all rats, and they exhibited nearly complete bone mineralization. However, BS glass was formed more new bone than B0 one in long implantation time. In conclusion, the synthesized bioactive borate glasses were safe materials, and introducing of Sr in the glass was enhanced formation of new bone throughout long time of implantation. Accordingly, this glass can be used as a potential substitute for bone regenerative materials and a hosting for strontium ions delivery.", "corpus_id": 218528037, "venue": "Journal of Inorganic and Organometallic Polymers and Materials", "year": 2020, "author_names": [ "Zainab M Al-Rashidy", "Areg E Omar", "Tamer H Abd El-Aziz", "Mohammad M Farag" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "216502804", "title": "Shear deformation characteristics and defect evolution of the biaxial 45deg and 0/90deg glass non crimp fabrics", "abstract": "Abstract Currently, the shear pre tension coupling behavior and evolution of various mesoscopic defects for the biaxial non crimp fabric (NCF) are not revealed. Here, this work systematically conducted the picture frame shear with applied pre tension and hemisphere forming for the 45deg and 0/90deg glass NCF. In the picture frame shearing, it is identified that the effective shear response of the biaxial NCF in the positive shear mode should be characterized in the cycle 1 due to the irreversible destruction of the NCF architecture. Besides, the applying pre tension is originally demonstrated to be capable of effectively suppressing the wrinkle defect and delaying the triggering shear angle of the wrinkle. Moreover, for the 45deg NCF, the stitching thread suffers tension in positive shear mode, and the wrinkle is the main defect. In the negative shear mode, due to the non pure shearing at high shear angle and compression of stitching thread, the mesoscopic defects, including bending and unit cell buckling of the stitching thread, are generated. In the hemisphere forming, it is revealed that the shear deformation is certainly arose in the tensile region of the 45deg NCF due to the asymmetrical yarn shrink. The same fabric wrinkle and mesoscopic stitching thread defects are also originally identified, demonstrating the hemisphere forming is highly correlated to the large shear deformation. The results here provide a basic reference to suppress the defects in the performing process of the biaxial NCF.", "corpus_id": 216502804, "venue": "", "year": 2020, "author_names": [ "Ming Mei", "Yujia He", "Xujing Yang", "Kai Wei", "Zhaoliang Qu", "Daining Fang" ], "n_citations": 7, "n_key_citations": 0, "score": 0 }, { "doc_id": "218616617", "title": "Evaluating the Effect of Non cellular Bioactive Glass Containing Scaffolds on Osteogenesis and Angiogenesis in in vivo Animal Bone Defect Models", "abstract": "The use of bone scaffolds to replace injured or diseased bone has many advantages over the currently used autologous and allogeneic options in clinical practice. This systematic review evaluates the current evidence for non cellular scaffolds containing bioactive glass on osteogenesis and angiogenesis in animal bone defect models. Studies that reported results of osteogenesis via micro CT and results of angiogenesis via Microfil perfusion or immunohistochemistry were included in the review. A literature search of PubMed, EMBASE and Scopus was carried out in November 2019 from which nine studies met the inclusion and exclusion criteria. Despite the significant heterogeneity in the composition of the scaffolds used in each study, it could be concluded that scaffolds containing bioactive glass improve bone regeneration in these models, both by osteogenic and angiogenic measures. Incorporation of additional elements into the glass network, using additives, and using biochemical factors generally had a beneficial effect. Comparing the different compositions of non cellular bioactive glass containing scaffolds is however difficult due to the heterogeneity in bioactive glass compositions, fabrication methods and biochemical additives used.", "corpus_id": 218616617, "venue": "Frontiers in Bioengineering and Biotechnology", "year": 2020, "author_names": [ "Chanuka D S Ranmuthu", "Charindu K I Ranmuthu", "Disha Singhania" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "213469045", "title": "Advanced cover glass defect detection and classification based on multi DNN model", "abstract": "Abstract Demands for display panels and relevant technologies are rapidly increasing with the recent advances in smart mobile devices. Many manufacturers have begun slowly investing in fully automated inspection systems that enable consistent and objective inspections. Carrying out such undertaking aims to satisfy high user requirements concerning quality while coping with high volumes. Cover glass is one of the important items for inspection because users directly interact with it. Despite the extensive use of typical machine vision based solutions in this field, many manufacturers continue relying on human based judgment because of a deficient understanding of defects or poor confidence in algorithms. To overcome these problems, this study proposes a deep learning neural network (DLNN) based defect inspection system. The DLNN has advantages over traditional computer vision or human based inspection in terms of flexibility and performance. We introduce a weighted multi DLNN inspection system capable of efficiently utilizing multi channel measurement data, with a detection rate of up to 99% and a false pass rate below 1%", "corpus_id": 213469045, "venue": "", "year": 2020, "author_names": [ "Jisu Park", "Hamza Riaz", "Hyunchul Kim", "Jungsuk Kim" ], "n_citations": 5, "n_key_citations": 0, "score": 1 }, { "doc_id": "210804231", "title": "Effects of cerium doping on dielectric properties and defect mechanism of barium strontium titanate glass ceramics", "abstract": "Abstract The effect of cerium content on phase evolution, dielectric properties and defect mechanism has been investigated in (Ba,Sr)TiO3 glass ceramics. Cerium mainly acts as an isovalent dopant in the B site of ABO3 perovskite structure at low content (1 mol% and then cerium substitution gradually occurs in the A site with increasing cerium content. A compensation mechanism related to variation in oxygen vacancy concentration has been identified. When cerium content increased to 2 mol% the maximum values of dielectric constant and energy storage density were simultaneously achieved. The impedance spectra revealed the highest conductivity. It was due to the increase in the concentration of charge carriers accompanied by the decrease in the activation energy of oxygen vacancy migration. With a further addition of cerium to 3 mol% the opposite trend was observed. The result is related to the presence of more cation vacancies, which, in turn, limits the diffusion rate of oxygen vacancy.", "corpus_id": 210804231, "venue": "", "year": 2020, "author_names": [ "Zhangyuan Zhao", "Xuewei Liang", "Tianyuan Zhang", "Kangjia Hu", "Shenhou Li", "Yue-fei Zhang" ], "n_citations": 5, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "115905768", "title": "Building information modeling (BIM) in Malaysian construction industry: Benefits and future challenges", "abstract": "Building Information Modeling is an innovative technology coupled with process and human interactions. BIM has been used by the Architecture, Engineering, and Construction (AEC) industry in developed and developing countries including Malaysia. The reason for having BIM in practice triggered by the Director of Public Works Department (PWD) in 2009; who urged construction companies to adopt ICT to enhance productivity and efficiency. This paper aims to explore the BIM implementation in Malaysian Construction Industry. A literature review was carried out to explore on existing BIM implementation that includes definitions, BIM applications, BIM benefits and BIM future challenges. The data collected from various sources such as books, journal articles, conference papers and material available on the Internet, which related to BIM. The review highlights on several BIM benefits regarding financial, better information, communication and coordination, respond to complexity, improved visual, improved sustainability, improved safety and also create service's or business's opportunities. Nevertheless, implementing BIM is not without challenges although it gains attention from many countries. Some issues regarding culture, technology, process and policy for the construction stakeholders, organizations and policymaker have been raised to take up the challenges for effective BIM implementation.", "corpus_id": 115905768, "venue": "", "year": 2018, "author_names": [ "Suria Musa", "Aj Marshall-Ponting", "Faizatul Akmar Abdul Nifa", "Syairah Aimi Shahron" ], "n_citations": 7, "n_key_citations": 0, "score": 0 }, { "doc_id": "169517979", "title": "Building Information Modeling (BIM) Benefits and Challenges: Malaysian Construction Organization Experience", "abstract": "Building Information Modeling is an innovative technology coupled with process and human interactions. BIM has been used by the Architecture, Engineering, and Construction (AEC) industry in developed and developing countries including Malaysia. This paper aims to explore the BIM implementation in Malaysian Construction Industry. This paper begins with a literature review and then reports on the findings of case studies of selected Malaysian construction organizations, carried out with the aim to explore on existing BIM implementation establishing on the BIM applications, BIM benefits, and BIM future challenges. The review highlights on several BIM benefits regarding financial, better information, communication and coordination, respond to complexity, improved visual, improved sustainability, improved safety and also create service's or business's opportunities. Case study findings indicate that the BIM implementation in projects are still limited and requires more efforts to be made if the construction industry wants to gain BIM benefits. The results also indicate that although BIM implementation is considered low in the Malaysian construction industry, the participants are in a consensus of the benefits from BIM implementation, similar to those found in the literature. These benefits agreed by the participants that BIM implementation is a positive way to enhance the task efficiency in project delivery and also contribute to the higher visibility of the project, together with time and cost optimization. Furthermore, in the meantime, the organization that has the knowledge and skills in implementing BIM could benefit the opportunity in getting the new job or projects as well as being hired as the service provider in the construction industry. Nevertheless, implementing BIM is not without challenges. The data analysis had identified several challenges in regards to the implementation of BIM, which are non technical (human and organizational culture) challenges and technical (technology) challenges. Thus, based on many future challenges for BIM, the Malaysian government and construction industry players need to collaborate and play their roles in supporting BIM development in Malaysia.", "corpus_id": 169517979, "venue": "", "year": 2019, "author_names": [ "Suria Musa", "Amanda Marshall-Ponting", "Syairah Aimi Shahron", "Faizatul Akmar Abdul Nifa" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "108455336", "title": "Challenges for Implementation of Building Information Modeling (BIM) in Malaysian Construction Industry", "abstract": "The construction industry of Malaysia is very dynamic in nature and the adoption of new technological advancements and construction methods has been a prime concerns for its key players and stakeholders. However, the adoption of BIM in such a dynamic industry is observed to be limited and its implementation has not been as successful as it should have been. The study focuses on the identification and prioritization the factors challenging the implementation of BIM in Malaysian construction industry. The data has been administrated through designed questionnaire by identifying the factors barriers, by literature review, for implementation of BIM in construction industry. The prioritization of such factors is expected to help the major stake holders to address the issues according to their priority which will save lot of previous time and financial with smooth implementation of BIM in Architecture, Engineering and Construction (AEC) industry in future project.", "corpus_id": 108455336, "venue": "", "year": 2014, "author_names": [ "Syed Shujaa Safdar Gardezi", "Nasir Shafiq", "Muhd Fadhil Nuruddin", "Syed Ahmad Farhan", "Usman Aminu Umar" ], "n_citations": 34, "n_key_citations": 1, "score": 1 }, { "doc_id": "53633230", "title": "Application of Building Information Modeling (BIM) in the Malaysian Construction Industry: A Story of the First Government Project", "abstract": "Building Information Modeling (BIM) is currently being used by the architecture, engineering and construction (AEC) industry in Malaysia. It has been introduced by the Director of Public Works Department (PWD) in 2007 to reduce construction costs and avoid design problems. BIM utilization in construction can detect any clash analysis during the design stage, improves efficiency of project scheduling, reduce costs and ensure high quality of the project as well as facilitate communication among construction players. Since it has been introduced by the PWD, several projects have been constructed and being constructed using BIM and one of the project is The National Cancer Institute (NCI) The project is owned by the Malaysian government. This paper discusses the application of BIM in the project, the first project launched by the Malaysian government. A literature review was conducted to explore previous BIM studies on the history of BIM, benefits and importance, barriers and challenges as well as existing BIM projects in the Malaysian construction industry. Furthermore, semi structured interviews were carried out with the client, consultant and contractor involved in the project. The interviews results reveal necessities and benefits of implementing BIM in completing the project. BIM is necessary for construction because its implementation can increase project quality. It is useful in assisting construction players to complete projects successfully. The results provide clear evidence of the effectiveness of implementing BIM in government projects. This paper can serve as a reference for critical studies of developing a strategy approach model for BIM implementation in the Malaysian construction industry.", "corpus_id": 53633230, "venue": "", "year": 2015, "author_names": [ "Aryani Ahmad Latiffi", "Suzila Mohd", "Juliana Brahim" ], "n_citations": 23, "n_key_citations": 5, "score": 1 }, { "doc_id": "115360170", "title": "The Potential Cost Implications and Benefits from Building Information Modeling (BIM) in Malaysian Construction Industry", "abstract": "The construction industry is classified as one of the industries with continuous hectic growing vis a vis its unique characteristics and uncertainties throughout the project lifecycle. One of the salient factors in guaranteeing a successful completion of project is integration and collaboration of multidisciplinary, especially the first tier of professionals from architecture, engineering, and construction (AEC) sectors. Thus, the industry is embracing numerous advanced information technology approaches and concepts such as Building Information Modeling (BIM) which intends to promote full integration and collaboration among all stakeholders. Despite the advantages exemplified from this paradigm, the reluctance of implementation by the local construction industry remains as the strongest obstacle. Therefore, this paper aims to evaluate the workability and applicability of BIM in the Malaysian construction industry, in terms of its potential cost implication and benefits. To generate thorough and acceptable outcomes, interviews are conducted with the limelight shed upon the BIM related projects to depict the genuineness and reality portrayal, in terms of opted cost benefits elements. The data collected from the interview session are analysed by utilizing framework analysis approach. The results exemplified BIM implementation level in Malaysian construction industry in relation to its actual practices and cost benefits. A BIM reference framework is also developed to depict as a guideline for interested adopters to envisage effective BIM adoption planning and future forethoughts.", "corpus_id": 115360170, "venue": "", "year": 2018, "author_names": [ "Li Wei Chin", "Chang Saar Chai", "Heap-Yih Chong", "Aminah Md Yusof", "NurFakhira bt Azmi" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "212408719", "title": "Application of Building Information Modeling (BIM) in the Malaysian Construction Industry: A Story of the First Government Project", "abstract": "Building Information Modeling (BIM) is currently being used by the architecture, engineering and construction (AEC) industry in Malaysia. It has been introduced by the Director of Public Works Department (PWD) in 2007 to reduce construction costs and avoid design problems. BIM utilization in construction can detect any clash analysis during the design stage, improves efficiency of project scheduling, reduce costs and ensure high quality of the project as well as facilitate communication among construction players. Since it has been introduced by the PWD, several projects have been constructed and being constructed using BIM and one of the project is The National Cancer Institute (NCI) The project is owned by the Malaysian government. This paper discusses the application of BIM in the project, the first project launched by the Malaysian government. A literature review was conducted to explore previous BIM studies on the history of BIM, benefits and importance, barriers and challenges as well as existing BIM projects in the Malaysian construction industry. Furthermore, semi structured interviews were carried out with the client, consultant and contractor involved in the project. The interviews results reveal necessities and benefits of implementing BIM in completing the project. BIM is necessary for construction because its implementation can increase project quality. It is useful in assisting construction players to complete projects successfully. The results provide clear evidence of the effectiveness of implementing BIM in government projects. This paper can serve as a reference for critical studies of developing a strategy approach model for BIM implementation in the Malaysian construction industry.", "corpus_id": 212408719, "venue": "", "year": 2015, "author_names": [ "Aryani Ahmad Latiffi", "Suzila Mohd", "Juliana Brahim" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "169296577", "title": "The cost benefits of building information modeling (BIM) in Malaysian construction industry", "abstract": "The construction industry is classified as one of the industries with continuous hectic growing vis a vis its unique characteristics and uncertainties throughout the project lifecycle. To march forward, the industry is embracing numerous advanced information technology approaches and concepts such as Building Information Modeling (BIM) which intends to promote full integration and collaboration among all stakeholders. Despite the advantages exemplified from this paradigm, the reluctance of implementation by the local construction industry remains as the strongest obstacle. Therefore, this paper aims to evaluate the workability and applicability of BIM in the Malaysian construction industry, in terms of its potential cost implication and benefits; with the objectives to examine the significances and relevant cost benefit elements of BIM investment in industry. To generate thorough and acceptable outcomes, interviews are conducted with the limelight shed upon the BIM related projects to depict the genuineness and reality portrayal, in terms of opted cost benefits elements. The data collected from the interview session are analysed by utilizing framework analysis approach. The results exemplified BIM implementation level in Malaysian construction industry in relation to its actual practices and cost benefits. This paper stressing on the preliminary stage of a research plan, aiming to comprehend the perceived value of BIM in the Malaysian building industry. A BIM reference framework is also developed to depict as a guideline for interested adopters to envisage effective BIM adoption planning and future forethoughts.", "corpus_id": 169296577, "venue": "", "year": 2017, "author_names": [ "Li Wei Chin" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "110205019", "title": "Building Information Modeling (BIM) Trends, Benefits, Risks, and Challenges for the AEC Industry", "abstract": "Building information modeling (BIM) is one of the most promising recent developments in the architecture, engineering, and construction (AEC) industry. With BIM technology, an accurate virtual model of a building is digitally constructed. This model, known as a building information model, can be used for planning, design, construction, and operation of the facility. It helps architects, engineers, and constructors visualize what is to be built in a simulated environment to identify any potential design, construction, or operational issues. BIM represents a new paradigm within AEC, one that encourages integration of the roles of all stakeholders on a project. In this paper, current trends, benefits, possible risks, and future challenges of BIM for the AEC industry are discussed. The findings of this study provide useful information for AEC industry practitioners considering implementing BIM technology in their projects.", "corpus_id": 110205019, "venue": "", "year": 2011, "author_names": [ "Salman Azhar" ], "n_citations": 1267, "n_key_citations": 118, "score": 1 }, { "doc_id": "217429599", "title": "Study on the Barriers and Driving Factors in Implementing Building Information Modelling (BIM) in Malaysia Construction Industry", "abstract": "The major focus of this paper is to identify the advantages, challenges and successful implementation strategy of BIM during the project life cycle in Malaysia construction industry. Building Information Modeling (BIM) technology is not new within the building industry, where the system helps to integrate the information throughout the life cycle process to create interactive. This dissertation aimed to develop a Rich Picture which provides details of the collaboration and implementation processes of BIM among the disciplines in Malaysian Architecture, Engineering and Construction (AEC) industry. By taking a step further, this paper also critically reviews and analyses current BIM maturity level, benefits, risks and challenges, and software used by the Malaysian construction industry. This study was conducted through reviewing literatures and questionnaire survey to achieve the objectives. Questionnaires have been distributed to respondents from the construction in Malaysia including Sabah, Sarawak (East Malaysia) Microsoft Excel was used to analyse the data collected. The results reveal that the adoption of BIM in Malaysia is still relatively stagnant and low. Autodesk(r) Revit(tm) is found to be the most preferable BIM software and collaboration platform to be used among other BIM software in Malaysia. Reluctance in changing the existing work practice, cost to implement BIM, hiring and maintaining personnel with adequate BIM capacity, teamwork and partnership, lack of standard and incentive, interoperability, and reluctance from project stakeholders are discovered to be the key challenges faced by most of the construction company in Malaysia. The key benefits discovered are problem solving upfront, better visualization, better design solution, automated clash detection, reduction in change order and rework, and cost saving whereas, standardization advantages, Building Life Cycle Assessment benefits, the least experienced benefits are better planning in material on site and reduced wastage on site. Vital IT planning, updated technology and collaborative development from management would be the successful implementation strategies for Building Information Modeling (BIM)", "corpus_id": 217429599, "venue": "", "year": 2018, "author_names": [ "Praveena Munianday" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "211801570", "title": "A Framework for the diffusion of building information modeling (BIM) adoption strategy for the private client organisation", "abstract": "Despite being involved in the global industry and having endorsement from various governments on its advantages, Building Information Modelling (BIM) continues to languish and unable to attract a critical mass of adoption in Malaysian construction industry. Approaching the issue from the interrelated perspectives, this study sought to identify the common components (potential value, expected benefits and challenges of adoption) related to BIM adoption and to suggest diffusion of BIM Adoption Strategy in the Malaysian context. The sample was drawn from the Real Estate and Housing Developers' Association Malaysia (REDHA) listed members from 2012 to 2013. Questionnaires were sent to 925 real estate and housing developers and 152 were returned and analysed using the Rasch Measurement Model. Initially, the following five categories of adopters were identified: Innovators, Late Adopters, Early Majority, Late Majority, and Laggards. Other than that, the findings suggested that although initially there was some resistance, it would be prudent to assume that should there be systematic strategy to support BIM adoption, 58% of the clients' organisation had the potential to adopt BIM within 3 years. It was interesting to report that the ability to increase the turnover of the project has been identified as de facto for organisations to employ BIM into their work process. This study also found that lack of direction of BIM will grind for successful BIM adoption in Malaysia. Thus, to support the adoption, this study proposed a Diffusion of BIM Adoption Strategy framework. The framework consists of transformational, operational and human development strategy. The framework also offers a comprehensive deployment of strategies to ensure that rejection will not take place after the organisations have started to adopt BIM. With the right strategies which are implemented in the sound manner, this study believes that BIM adoption in Malaysia will be successful and at par with other early adopter countries.", "corpus_id": 211801570, "venue": "", "year": 2017, "author_names": [ "Afifuddin Husairi" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "2973821", "title": "Pavlovian to Instrumental Transfer in Alcohol Dependence: A Pilot Study", "abstract": "Background: Pavlovian processes are thought to play an important role in the development, maintenance and relapse of alcohol dependence, possibly by influencing and usurping ongoing thought and behavior. The influence of pavlovian stimuli on ongoing behavior is paradigmatically measured by pavlovian to instrumental transfer (PIT) tasks. These involve multiple stages and are complex. Whether increased PIT is involved in human alcohol dependence is uncertain. We therefore aimed to establish and validate a modified PIT paradigm that would be robust, consistent and tolerated by healthy controls as well as by patients suffering from alcohol dependence, and to explore whether alcohol dependence is associated with enhanced PIT. Methods: Thirty two recently detoxified alcohol dependent patients and 32 age and gender matched healthy controls performed a PIT task with instrumental go/no go approach behaviors. The task involved both pavlovian stimuli associated with monetary rewards and losses, and images of drinks. Results: Both patients and healthy controls showed a robust and temporally stable PIT effect. Strengths of PIT effects to drug related and monetary conditioned stimuli were highly correlated. Patients more frequently showed a PIT effect, and the effect was stronger in response to aversively conditioned CSs (conditioned suppression) but there was no group difference in response to appetitive CSs. Conclusion: The implementation of PIT has favorably robust properties in chronic alcohol dependent patients and in healthy controls. It shows internal consistency between monetary and drug related cues. The findings support an association of alcohol dependence with an increased propensity towards PIT. 2014 S. Karger AG, Basel", "corpus_id": 2973821, "venue": "Neuropsychobiology", "year": 2014, "author_names": [ "Maria Garbusow", "Daniel J Schad", "Christian Sommer", "Elisabeth Junger", "Miriam Sebold", "Eva Friedel", "Jean Wendt", "Norbert Kathmann", "Florian Schlagenhauf", "Ulrich S Zimmermann", "Andreas Heinz", "Quentin J M Huys", "Michael A Rapp" ], "n_citations": 61, "n_key_citations": 4, "score": 1 }, { "doc_id": "27023689", "title": "Upregulation of Voluntary Alcohol Intake, Behavioral Sensitivity to Stress, and Amygdala Crhr1 Expression Following a History of Dependence", "abstract": "BACKGROUND A history of alcohol dependence recruits increased voluntary alcohol intake and sensitivity to stress. Corticotropin releasing hormone (CRH) has been implicated in this transition, but underlying molecular mechanisms remain unclear. METHODS A postdependent state was induced using intermittent alcohol exposure. Experiments were carried out following or =3 weeks of recovery to eliminate contributions of acute withdrawal. Voluntary alcohol consumption was assessed in a two bottle, free choice procedure. Behavioral sensitivity to stress was examined using fear suppression of behavior in a punished drinking (Vogel) conflict test. Effects of forced swim stress on voluntary alcohol intake were examined as a function of exposure history. Expression of Crh, Crhr1, and Crhr2 transcripts was analyzed by in situ hybridization histochemistry. RESULTS Alcohol drinking was upregulated long term following a history of dependence. Fear suppression of behavior was selectively potentiated in postdependent animals. This persisted 3 months after alcohol exposure and was reversed by the selective CRH R1 antagonist 3 (4 Chloro 2 morpholin 4 yl thiazol 5 yl) 8 (1 ethylpropyl) 2,6 dimethyl imidazo[1,2 b]pyridazine (MTIP) (10 mg/kg) Forced swim stress increased alcohol intake in postdependent animals but not in control animals. Behavioral changes were paralleled by an upregulation of Crhr1 transcript expression within basolateral (BLA) and medial (MeA) amygdala and Crh messenger RNA (mRNA) in central amygdala (CeA) In contrast, Crhr2 expression was down in the BLA. CONCLUSIONS Neuroadaptations encompassing amygdala CRH signaling contribute to the behavioral phenotype of postdependent animals.", "corpus_id": 27023689, "venue": "Biological Psychiatry", "year": 2008, "author_names": [ "Wolfgang H Sommer", "Roberto Rimondini", "Anita C Hansson", "Philip Arthur Hipskind", "Donald R Gehlert", "Christina S Barr", "Markus Heilig" ], "n_citations": 277, "n_key_citations": 39, "score": 0 }, { "doc_id": "3543351", "title": "Treatment in hospital for alcohol dependent patients decreases attentional bias", "abstract": "Background and objectives: Previous studies in alcohol dependent patients have shown an attentional bias (AB) under related substance cues, which can lead to relapse. This AB can be evaluated by the alcohol Stroop test (AST) The AST is a modified Stroop task in which participants have to name the color of an alcohol related word or a neutral word. AB is the response time difference between these two types of words. The goal of the current study was to examine modification of AB during specialized hospitalization for alcohol dependence, with the suppression of a training bias that could be present in within subject design. Methods: Individuals with alcohol dependence disorders (Diagnostic and Statistical Manual of Mental Disorders, 4th edition) and admitted for withdrawal in the addiction unit of the University Hospital of Clermont Ferrand (test group, n 42) and persons with no alcohol or psychiatric disorder (control group, n 16) recruited among colleagues and friends of the staff, performed the AST. A subgroup of the test group performed the AST in admission (admission group, n 19) and another subgroup undertook the test immediately before discharge (discharge group, n 23) Results: Results showed an AB only for patients seen at admission (F[1,55] 3.283, P 0.075) Moreover, we observed that the AB in the admission group (mean 34 ms, standard deviation [SD] 70.06) was greater than the AB in the control group (mean 23 ms, SD 93.42) itself greater than the AB in the discharge group (mean 12 ms, SD 93.55) (t[55] 1.71; P 0.09) Conclusion: Although the results are preliminary, the present study provides evidence for changes in the AB during alcohol addiction treatment and for the value of these methods to diminish AB during detoxification.", "corpus_id": 3543351, "venue": "Neuropsychiatric disease and treatment", "year": 2013, "author_names": [ "Valentin Flaudias", "Georges Brousse", "Ingrid de Chazeron", "F Planche", "Julien Brun", "Pierre Michel Llorca" ], "n_citations": 10, "n_key_citations": 1, "score": 1 }, { "doc_id": "3562315", "title": "Inhibition of Cortical Activity and Apoptosis Caused by Ethanol in Neonatal Rats In Vivo", "abstract": "Abstract Alcohol consumption during pregnancy causes fetal alcohol spectrum disorder, which includes neuroapoptosis and neurobehavioral deficits. The neuroapoptotic effects of alcohol have been hypothesized to involve suppression of brain activity. However, in vitro studies suggest that ethanol acts as a potent stimulant of cortical activity. We explored the effects of alcohol (1 6 g/kg) on electrical activity in the rat somatosensory cortex in vivo at postnatal days P1 23 and compared them with its apoptotic actions. At P4 7, when the peak of alcohol induced apoptosis was observed, alcohol strongly suppressed spontaneous gamma and spindle bursts and almost completely silenced neurons in a dose dependent manner. The dose dependence of suppression of neuronal activity strongly correlated with the alcohol induced neuroapoptosis. Alcohol also profoundly inhibited sensory evoked bursts and suppressed motor activity, a physiological trigger of cortical activity bursts in newborns. The suppressive effects of ethanol on neuronal activity waned during the second and third postnatal weeks, when instead of silencing the cortex, alcohol evoked delta wave electrographic activity. Thus, the effects of alcohol on brain activity are strongly age dependent, and during the first postnatal week alcohol profoundly inhibits brain activity. Our findings suggest that the adverse effects of alcohol in the developing brain involve suppression of neuronal activity.", "corpus_id": 3562315, "venue": "Cerebral cortex", "year": 2017, "author_names": [ "Julia Lebedeva", "Andrei Zakharov", "Elena Ogievetsky", "Alina Minlebaeva", "Rustem Kurbanov", "Elena Gerasimova", "Guzel F Sitdikova", "Roustem Khazipov" ], "n_citations": 38, "n_key_citations": 1, "score": 1 }, { "doc_id": "1246847", "title": "Educational Inequalities in Exit from Paid Employment among Dutch Workers: The Influence of Health, Lifestyle and Work", "abstract": "Background Individuals with lower socioeconomic status are at increased risk of involuntary exit from paid employment. To give sound advice for primary prevention in the workforce, insight is needed into the role of mediating factors between socioeconomic status and labour force participation. Therefore, it is aimed to investigate the influence of health status, lifestyle related factors and work characteristics on educational differences in exit from paid employment. Methods 14,708 Dutch employees participated in a ten year follow up study during 1999 2008. At baseline, education, self perceived health, lifestyle (smoking, alcohol, sports, BMI) and psychosocial (demands, control, rewards) and physical work characteristics were measured by questionnaire. Employment status was ascertained monthly based on tax records. The relation between education, health, lifestyle, work characteristics and exit from paid employment through disability benefits, unemployment, early retirement and economic inactivity was investigated by competing risks regression analyses. The mediating effects of these factors on educational differences in exit from paid employment were tested using a stepwise approach. Results Lower educated workers were more likely to exit paid employment through disability benefits (SHR:1.84) unemployment (SHR:1.74) and economic inactivity (SHR:1.53) but not due to early retirement (SHR:0.92) Poor or moderate health, an unhealthy lifestyle, and unfavourable work characteristics were associated with disability benefits and unemployment, and an unhealthy lifestyle with economic inactivity. Educational differences in disability benefits were explained for 40% by health, 31% by lifestyle, and 12% by work characteristics. For economic inactivity and unemployment, up to 14% and 21% of the educational differences could be explained, particularly by lifestyle related factors. Conclusions There are educational differences in exit from paid employment, which are partly mediated by health, lifestyle and work characteristics, particularly for disability benefits. Health promotion and improving working conditions seem important measures to maintain a productive workforce, particularly among workers with a low education.", "corpus_id": 1246847, "venue": "PloS one", "year": 2015, "author_names": [ "Suzan J W Robroek", "Anne Rongen", "Coos H Arts", "Ferdy Otten", "Alex Burdorf", "Merel Schuring" ], "n_citations": 44, "n_key_citations": 2, "score": 1 }, { "doc_id": "9136995", "title": "Treatment of alcohol use disorders", "abstract": "In the treatment of alcohol dependence, Marc Schuckit (Feb 7, p 492) omits baclofen. This is most regrettable for two reasons. First, Schuckit's proposed treatment excludes patients with liver cirrhosis from receiving any anticraving medication. Alcohol intake in patients with cirrhosis is associated with high mortality. With cirrhosis, naltrexone is contraindicated and the safety of acamprosate, topiramate, and disulfi ram has not been tested because these agents undergo extensive liver metabolism. Baclofen is the only anticraving medication shown in a randomised trial to be safe and eff ective at promoting abstinence in patients with cirrhosis. Depriving cirrhosis patients of baclofen would deprive them of the benefi t patients without cirrhosis get from standard anticraving treatment. Second, a new translational model of treatment based on animal studies has been proposed, in which medication induced suppression of craving could translate into eff ortless suppression of dependence in alcohol dependent patients. In animals, baclofen is the only drug that has been shown to suppress the urge to consume alcohol. All other anticraving medications used in the treatment of alcohol dependence only reduce this urge. In alcoholic patients, suppression of dependence through suppression of craving has never been reported with naltrexone, acamprosate, or topiramate despite thousands of patients trialled on these drugs. Baclofen should be off ered to patients with cirrhosis, and craving suppression should be tested in randomised trials.", "corpus_id": 9136995, "venue": "The Lancet", "year": 2009, "author_names": [ "Olivier Ameisen" ], "n_citations": 8, "n_key_citations": 1, "score": 1 }, { "doc_id": "54397497", "title": "Treatment of alcohol use disorders Authors' reply", "abstract": "In the treatment of alcohol dependence, Marc Schuckit (Feb 7, p 492) omits baclofen. This is most regrettable for two reasons. First, Schuckit's proposed treatment excludes patients with liver cirrhosis from receiving any anticraving medication. Alcohol intake in patients with cirrhosis is associated with high mortality. With cirrhosis, naltrexone is contraindicated and the safety of acamprosate, topiramate, and disulfi ram has not been tested because these agents undergo extensive liver metabolism. Baclofen is the only anticraving medication shown in a randomised trial to be safe and eff ective at promoting abstinence in patients with cirrhosis. Depriving cirrhosis patients of baclofen would deprive them of the benefi t patients without cirrhosis get from standard anticraving treatment. Second, a new translational model of treatment based on animal studies has been proposed, in which medication induced suppression of craving could translate into eff ortless suppression of dependence in alcohol dependent patients. In animals, baclofen is the only drug that has been shown to suppress the urge to consume alcohol. All other anticraving medications used in the treatment of alcohol dependence only reduce this urge. In alcoholic patients, suppression of dependence through suppression of craving has never been reported with naltrexone, acamprosate, or topiramate despite thousands of patients trialled on these drugs. Baclofen should be off ered to patients with cirrhosis, and craving suppression should be tested in randomised trials.", "corpus_id": 54397497, "venue": "The Lancet", "year": 2009, "author_names": [ "Marc A Schuckit" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "49296710", "title": "Family management risk and protective factors for adolescent substance use in South Africa", "abstract": "BackgroundAn increasingly recognised prevention approach for substance use entails a reduction in risk factors, and the enhancement of promotive, or protective factors in individuals and the environment surrounding them during their growth and development.MethodsThis exploratory study evaluated the effect of potential risk and protective factors associated with family management relating to adolescent substance use in South Africa. Exploratory analysis and cumulative odds ordinal logistic regression modelling was performed on the data, while controlling for the influence of demographic and socio economic characteristics on adolescent substance use.ResultsThe most frequently used substances were cannabis, followed by other illicit substances and alcohol in decreasing order of use intensity. The specific protective, or risk effect of family management factors, varied according to substance. Risk factors associated with demographic and socio economic factors included being male, of a younger age, lower education grades, of a coloured ethnicity, adolescents from divorced parents, and unemployed or fully employed mothers. Several family management factors, categorised as parental monitoring, discipline, behavioural control and rewards, demonstrated either risk or protective effects on adolescent substance use.ConclusionsThis exploratory study demonstrated that various risk and protective factors associated with family management may affect adolescent substance use. Interaction amongst risk or protective factors, as well as the type of substance, should be considered when further considering interventions based on these risk or protective factors.", "corpus_id": 49296710, "venue": "Substance Abuse Treatment, Prevention, and Policy", "year": 2018, "author_names": [ "Beatrice Wamuyu Muchiri", "Monika ML dos Santos" ], "n_citations": 9, "n_key_citations": 0, "score": 1 }, { "doc_id": "72242578", "title": "Associacao entre uso de alcool em individuos com AIDS e adesao ao tratamento antirretroviral: uma revisao da literatura", "abstract": "OBJECTIVE: The purpose of this work was to make a systematic review of the literature, using the MedLine data basis, about the alcohol usage/abuse/dependence as a risk factor to the adherence reduction, the viral load reduction or even a worse clinical outcome in HIV patients in the usage of highly active antiretroviral therapy (HAART) METHOD: It was made a systematic research in the MedLine data basis using the words: \"HAART\" \"adherence\" and \"alcohol\" with the purpose of finding articles about the themes: evaluations or association between the alcohol usage/abuse/dependence and adherence/suppression of the viral load/clinical outcome in HIV patients in the usage of antiretroviral therapy. RESULTS: The search found 65 articles. However, only 21 of this achieved the pre established criteria and have been selected. It was found a positive association among the usage/abuse/dependence of the alcohol and the low adherence/low viral load suppression/worse clinical outcome in 18 (85,7% of the articles. CONCLUSION: We could conclude that the alcohol usage/abuse/dependence is a risk factor to the low adherence/low viral load suppression/worse clinical outcome in HIV patients in the usage of HAART.", "corpus_id": 72242578, "venue": "", "year": 2010, "author_names": [ "Samuel Robson Moreira Rego", "Daianny Macedo de Sousa Rego" ], "n_citations": 23, "n_key_citations": 0, "score": 1 }, { "doc_id": "195081459", "title": "Baclofen overdose/withdrawal", "abstract": "Various toxicities: case report A 33 years old woman received off label treatment with baclofen and developed withdrawal syndrome following baclofen overdose [route and duration of treatment to reaction onsets not stated] The woman, who had a history of alcohol dependence, was admitted to the emergency room for fatigue, vomiting and neurological disorders. A clinical examination showed acute neurological disorders including confusion, extremity and head tremors. Subsequently, she was transferred to the nephrology acute care unit. On the 4th day, her condition worsened. She was febrile, tachycardic, icteric, tachypneic, oliguric with mottling at the level of lower limbs. She had an extracellular dehydration and her mean arterial pressure was above 70 mmHg. The Glasgow Coma Scale score was 13. Subsequently, confusion was diagnosed with a spatial disorientation. Her pupils were dilated and reactive to light. She did not exhibit sensory or motor deficit and the plantar response was inflexion. She had a global increased muscle tone, predominating at the level of head rotated to the left side and upper limbs. The Laboratory values revealed a rhabdomyolysis with a CPK at 6185 UI/L, an AST at 215 UI/L, an ALT at 104 UI/ L, a GGT at 1485 UI/L, an alkaline phosphatase at 258 UI/L, a hyperbillirubinaemia at 61 mmol/L. Therefore, she was referred to the ICU. A transthoracic ECG revealed signs suggesting a preload dependence. Subsequently, her family mentioned that she had received baclofen up to 560 mg/day for alcohol dependence suppression. The treatment was initially prescribed by a psychiatrist but later, she developed self medication. She abruptly discontinued her baclofen treatment due to an acute gastroenteritis. The woman was immediately treated with fluid resuscitation with crystalloids. The baclofen was reintroduced at 60 mg/d, and clonidine plus benzodiazepine were also given for her withdrawal symptoms. After 2 days in the ICU, blood sample revealed an increase of rhabdomyolysis. The hyperthermia and an increased muscle tone were also persistent. In the following days, her all biological variables became normal and she recovered fully. Author comment: \"Since 2008, off label baclofen is prescribed for alcohol use disorders.\" \"We report here a case of baclofen withdrawal syndrome secondary to an abrupt cessation of very high dose treatment for alcohol use disorders, mimicking neuroleptic malignant syndrome in a 33 years old patient.\"", "corpus_id": 195081459, "venue": "Reactions Weekly", "year": 2016, "author_names": [ "", "S O", "Baclofen overdosewithdrawal" ], "n_citations": 0, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "76656476", "title": "A REASSESSMENT OF THE PHYLOGENETIC POSITION OF CRETACEOUS SAUROPOD DINOSAURS FROM QUEENSLAND, AUSTRALIA", "abstract": "The Cretaceous sauropod material from Queensland, Australia, has been regarded as pertaining to a persistently primitive sauropod lineage e.g. Coombs and Molnar) The specimens derive from the Toolebuc and Allaru (Albian marine) and Winton (Cenomanian continental) Formations. Recent phylogenetic analyses carried out by workers in Argentina, the USA and England permit a reassessment of this fragmentary material. As far as can be ascertained from the material, there is no indication from the character states that more than a single taxon is represented. Character states diagnostic of the Titanosauriforrnes, the Titanosauria, the Somphospondyli and the Titanosauridae are present. Thus the Queensland material does not pertain to cetiosaurids but belongs to titanosaurs, extending their range into Australia. KEY WORDS. Sauropods. Austrosaurus. Titanosaurs. Cretaceous. Paleozoogeography.", "corpus_id": 76656476, "venue": "", "year": 2015, "author_names": [ "Ralph E Molnar" ], "n_citations": 15, "n_key_citations": 4, "score": 1 }, { "doc_id": "128617817", "title": "Armored dinosaurs(Ornithischia: Ankylosauria) from the Middle and Upper Jurassic of England", "abstract": "Abstract Hitherto the earliest positive record of ankylosaurs(armored dinosaurs) has been from beds well up in the Lower Cretaceous; in fact, however, specimens referable to the ankylosaurian family Nodosauridae are present in the Middle and Upper Jurassic of England: from the Middle Callovian [partial mandible Sarcolestes leedsi Lydekker the Upper Oxfordian [femur Cryptodraco eumerus Seeley maxilla Priodontognathus phillipsii Seeley and the Upper Tithonian [caudal vertebra, tooth] The Tithonian tooth and those of Priodontognathus are large and similar to those of the nodosaurids Priconodon and Sauropelta (Lower Cretaceous, U.S.A. The incomplete mandible of Sarcolestes is similar to that of Sauropelta with a dermal scute fused to the lateral surface, and a tooth row extending to the anterior end of the jaw; an unusual feature is the caniniform first tooth. The quadrupedal ankylosaurs and stegosaurs probably represent separate evolutionary lines that extend back at least into the Lower Jurassic, and both lines probably evolved from ornithopod dinosaurs that were bipedal. Nodosaurid ankylosaurs occur in Europe from the Middle Jurassic to Late Cretaceous and probably reached North America via a filter route in the early Cretaceous.", "corpus_id": 128617817, "venue": "", "year": 1980, "author_names": [ "Peter M Galton" ], "n_citations": 43, "n_key_citations": 7, "score": 2 }, { "doc_id": "84521850", "title": "The palaeoecology of the dinosaurs of the Wessex Formation (Wealden Group, Early Cretaceous) Isle of Wight, Southern England", "abstract": "Abstract The Wessex Formation on the Isle of Wight yields an Early Cretaceous dinosaur fauna. Sedimentological evidence shows that this represents a mosaic of fluvial, floodplain and lacustrine environments within a relatively narrow east west oriented valley. The vegetational cover on the alluvial plain had a savannahor chaparral like aspect, probably of low productivity. The relative scarcity of small aquatic vertebrates, absence of coals, abundance of oxidixed sediments and the presence of immature calcretes indicate seasonal water supply. The dinosaur taxa compising the Wessex Formation faunal assemblage represent a single palaeocommunity which inhabited the local alluvial plain, although some species may have been transient. The fauna had a relatively low diversity and this is attributed to the low productivity of the local vegetation. Iguanodontids and Hypsilophodon were the dominant elements in the fauna. In contrast to Late Jurassic dinosaur faunas, sauropods are less abundant in the Wessex Formation, although they remain taxonomically diverse. It is concluded that climatic changes which took place in the Late Jurassic or Early Cretaceous resulted in the appearance of flow productivity vegetation and that this was incapable of supporting large sauropod populations.", "corpus_id": 84521850, "venue": "", "year": 1994, "author_names": [ "Allan N Insole", "Stephen Hutt" ], "n_citations": 37, "n_key_citations": 4, "score": 1 }, { "doc_id": "198411385", "title": "The Early Cretaceous brachiosaurid dinosaurs Ornithopsis and Eucamerotus from the Isle of Wight, England", "abstract": "", "corpus_id": 198411385, "venue": "", "year": 1995, "author_names": [ "William T Blows" ], "n_citations": 20, "n_key_citations": 3, "score": 1 }, { "doc_id": "140583717", "title": "Stegosaurian Dinosaurs from the Bathonian(Middle Jurassic) of England, the earliest record of the family Stegosauridae", "abstract": "Abstract The earliest records of stegosaurian dinosaurs of the family Stegosauridae are a few isolated bones from the Bathonian (Middle Jurassic) of southern England. A massive femur of a juvenile individual from the Lower Cornbrash (top of Upper Bathonian) of Oxfordshire is tentatively referred to the genus Lexovisaurus Hoffstetter as L. vetustus Huene Four other bones from the Lower Bathonian are tentatively referred to this taxon: two incomplete vertebrae from the Sharp's Hill Formation of Oxfordshire and two large and massive dermal plates from the underlying Chipping Norton Formation (basal Bathonian) of Gloucestershire.", "corpus_id": 140583717, "venue": "", "year": 1983, "author_names": [ "Peter M Galton", "H Philip Powell" ], "n_citations": 15, "n_key_citations": 2, "score": 2 }, { "doc_id": "92401806", "title": "Regular ArticleThe palaeoecology of the dinosaurs of the Wessex Formation (Wealden Group, Early Cretaceous) Isle of Wight, Southern England", "abstract": "The Wessex Formation on the Isle of Wight yields an Early Cretaceous dinosaur fauna. Sedimentological evidence shows that this represents a mosaic of fluvial, floodplain and lacustrine environments within a relatively narrow east west oriented valley. The vegetational cover on the alluvial plain had a savannahor chaparral like aspect, probably of low productivity. The relative scarcity of small aquatic vertebrates, absence of coals, abundance of oxidixed sediments and the presence of immature calcretes indicate seasonal water supply. The dinosaur taxa compising the Wessex Formation faunal assemblage represent a single palaeocommunity which inhabited the local alluvial plain, although some species may have been transient. The fauna had a relatively low diversity and this is attributed to the low productivity of the local vegetation. Iguanodontids and Hypsilophodon were the dominant elements in the fauna. In contrast to Late Jurassic dinosaur faunas, sauropods are less abundant in the Wessex Formation, although they remain taxonomically diverse. It is concluded that climatic changes which took place in the Late Jurassic or Early Cretaceous resulted in the appearance of flow productivity vegetation and that this was incapable of supporting large sauropod populations.", "corpus_id": 92401806, "venue": "", "year": 1994, "author_names": [ "Allan N Insole", "Stephen Hutt" ], "n_citations": 3, "n_key_citations": 0, "score": 2 }, { "doc_id": "129184844", "title": "Non avian theropod dinosaurs from the early Late Cretaceous of central Europe", "abstract": "Abstract Quantitative and qualitative analyses of isolated teeth and postcranial elements of non avian theropod dinosaurs from the Upper Cretaceous (Santonian) Csehbanya Formation, Iharkut (western Hungary) indicate that these remains represent multiple dinosaur groups. Based on comparative and statistical analyses, 58 teeth and tooth fragments are identified as belonging to medium sized basal tetanuran theropods that may have represented the top predator of the terrestrial Iharkut ecosystem. These teeth are almost identical with the two Megalosaurus pannoniensis teeth from the lower Campanian of Muthmannsdorf (Austria) and show a notable similarity to teeth of the Middle Jurassic M bucklandii and the Lower Cretaceous M dunkeri from England. A single pedal ungual phalanx is interpreted as the oldest European occurrence of Late Cretaceous abelisaurids, as suggested by a ventral groove and bifurcated grooves laterally bordering a convex, triangular area. Small bodied paravian theropods are found to be the best represented group in Iharkut, including teeth, caudal vertebrae, a metacarpal III, manual phalanges, and a fragmentary left tibia. A particularly notable paravian remain is a complete left scapulocoracoid possessing a unique pneumatic foramen ventral to the coracoid foramen. This specimen is assigned to Pneumatoraptor fodori n. g. et sp. Finally, numerous postcranial elements of Theropoda indet. were recovered, including a fragmentary sacrum that offers new insights into the sacral pneumaticity of theropods. The presence of these theropods in the Santonian Iharkut ecosystem provides the first evidence that during the early Late Cretaceous the Mediterranean archipelago was inhabited by both Gondwanan and Euramerican members of theropod dinosaurs. Consistent with data available for other archosaurian taxa, the close relationship of the basal tetanuran teeth with much older forms suggests that the Iharkut area may have functioned as a refugium in the early Late Cretaceous Mediterranean archipelago.", "corpus_id": 129184844, "venue": "", "year": 2010, "author_names": [ "Attila Osi", "Sebastian Apesteguia", "Michal Kowalewski" ], "n_citations": 42, "n_key_citations": 5, "score": 1 }, { "doc_id": "83877447", "title": "Reassessment of the Lower Cretaceous (Barremian) pliosauroid Leptocleidus superstes Andrews, 1922 and other plesiosaur remains from the nonmarine Wealden succession of southern England", "abstract": "The Lower Cretaceous (upper Berriasian to lowermost Aptian) nonmarine Wealden succession of southern England has been a prolific source of vertebrate fossils for over 180 years. The sequence is most famous for terrestrial reptiles, particularly dinosaurs; however, significant aquatic tetrapod discoveries including rare nonmarine plesiosaurs have also been reported. The record of Wealden plesiosaurs currently incorporates a single valid taxon, Leptocleidus superstes Andrews, 1922a, based on a partial skeleton and skull from the Barremian Upper Weald Clay Formation of Berwick, Sussex. Traditional classifications place this plesiomorphic pliosauroid with basal Jurassic rhomaleosaurids; however, the genus Leptocleidus has since become a 'waste basket' for various Cretaceous rhomaleosaurid like plesiosaurs from around the globe. In an attempt to clarify this situation, the type specimen of L. superstes was reexamined and redescribed. Previously unrecorded anatomical features were identified including an elongate, gracile paraoccipital process on the exoccipital opisthotic, and tooth ornament comprising widely spaced, coarse striations that are restricted to the lingual surface of the crown (mesiodistal 'carinae' are absent) Other indeterminate pliosauroid remains (recovered along with coeval elasmosaurids) from the upper Berriasian Valanginian Hastings Beds Group also exhibit potentially diagnostic traits: an atlas centrum with no anterolateral exposure and with ventral margin formed by the intercentrum; a single headed rib articulation on the atlas centrum extending onto the axis centrum; and epipodials that are longer than broad. The placement of L. superstes is controversial in recent phylogenies. To test the competing hypotheses, L. superstes together with all closely related species were rescored into the most comprehensive published phylogenetic data sets of Plesiosauria and Pliosauroidea. Separate maximum parsimony and Bayesian analyses of each matrix unanimously supported a relationship between L. superstes and pliosauroids but could not confirm placement within either Rhomaleosauridae sensu stricto, or a discrete 'leptocleidoid' clade. Examination of character states advocating affinities amongst Leptocleidus spp. suggests homoplasy rather than clear homology between what are potentially palaeobiogeographically disparate genus level taxa. (c) 2011 The Linnean Society of London, Zoological Journal of the Linnean Society, 2011, 161, 663 691.", "corpus_id": 83877447, "venue": "", "year": 2011, "author_names": [ "Benjamin P Kear", "Paul M Barrett" ], "n_citations": 37, "n_key_citations": 6, "score": 2 }, { "doc_id": "129793662", "title": "The Wealden (non marine Lower Cretaceous) of the Wessex Sub basin, southern England", "abstract": "Abstract The Wealden Beds (non marine Lower Cretaceous) of the Wessex Sub basin, southern England, are exposed principally in coastal sections on the Isle of Wight and in Dorset. Geological Conservation Review sites within these strata have been extensively documented since the earliest days of geological enquiry in Great Britain. The succession is dominated by the alluvial Wessex Formation which demonstrates a broad east west transition from meanderplain lithofacies to coarser grained alluvial sediments, in relative proximity to the Cornubian source massif. The meanderplain sediments on the Isle of Wight are of international importance for their plant and animal fossils, the latter including many dinosaurs and their trackways. Upper Barremian transgression resulted in the spread of muddy lakes and coastal lagoons from the Weald Sub basin into the eastern part of the Wessex Sub basin, around or through the Purbeck Isle of Wight structure. The resulting richly fossiliferous mudrock dominated strata are now represented by the Vectis Formation on the Isle of Wight and in Swanage Bay, Dorset. The Geological Conservation Review sites in the Wessex Sub basin are documented and interpreted, with particular reference to research history, chronostratigraphy, structural context, palaeoenvironments, palaeobiology and palaeoclimatology. New directions for research are proposed, as applicable.", "corpus_id": 129793662, "venue": "", "year": 2012, "author_names": [ "Jonathan D Radley", "Percival Allen" ], "n_citations": 35, "n_key_citations": 3, "score": 1 }, { "doc_id": "129351673", "title": "A reappraisal of a putative record of abelisauroid theropod dinosaur from the Middle Jurassic of England", "abstract": "Abstract Abelisauroidea are a recently recognized clade of theropod dinosaurs that have a predominantly Gondwanan distribution. Recently, a distal theropod tibia from the Middle Jurassic of England was identified as an abelisauroid, representing one of the oldest records of the group in general and the only Jurassic occurrence in Europe. On this basis, rapid radiation of abelisauroid and a global distribution of this clade in the Jurassic were suggested. Here, the specimen in question is re examined and the characters used for referral to the Abelisauroidea are re evaluated. None of the proposed characters can be demonstrated to represent abelisauroid synapomorphies and all have a wider distribution; especially coelurosaurian theropods, which are known from contemporaneous beds in England, frequently show the same character combination. Thus, there is currently no secure evidence for the occurrence of abelisauroids in the Jurassic of the northern Hemisphere, and the early evolution of this clade remains poorly known. Furthermore, other fragmentarily known taxa previously referred to Abelisauroidea based on putative synapomorphies of the distal tibia, such as Ozraptor and Austrocheirus should be considered as Theropoda indet.", "corpus_id": 129351673, "venue": "", "year": 2012, "author_names": [ "Oliver W M Rauhut" ], "n_citations": 20, "n_key_citations": 2, "score": 1 } ]

[ { "doc_id": "214601233", "title": "Transversus abdominis plane (TAP) block for laparoscopic live donor nephrectomy: Continuous catheter infusion provides no additional analgesic benefit over single injection ropivacaine", "abstract": "Transversus abdominis plane (TAP) blocks are useful for adjunctive pain control following laparoscopic live donor nephrectomy (LLDN) The objective was to determine if TAP catheter provides additional analgesia compared with single injection TAP block alone for kidney donors.", "corpus_id": 214601233, "venue": "Clinical transplantation", "year": 2020, "author_names": [ "Yar Luan Yeap", "John W Wolfe", "Elizabeth Kroepfl", "Jonathan A Fridell", "John A Powelson" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "52141004", "title": "Efficacy of transversus abdominis plane (TAP) block in pain management after laparoscopic sleeve gastrectomy (LSG) A double blind randomized controlled trial.", "abstract": "BACKGROUND The aim of this randomized controlled trial was to assess the effectiveness of transversus abdominis plane (TAP) block in post operative pain management in patients undergoing laparoscopic sleeve gastrectomy (LSG) METHODS Ninety consecutive patients undergoing LSG were randomly assigned to three groups: placebo, TAP block with 0.25% bupivacaine (40mL total) and TAP block with 0.25% bupivacaine 1/100,000 epinephrine (40mL total) Pain and nausea/vomiting scores were evaluated at varying times until discharge. Other parameters included, additional analgesia required, time to ambulation, length of stay and time required for return to work after discharge. RESULTS There was decrease in post operative pain 3 hours after surgery between the placebo group and the bupivacaine group and between the placebo group and the bupivacaine with epinephrine group, however, no difference in 1, 6, 12 and every 6 hours after. There was no significant difference in post operative analgesia requirements, nausea/vomiting scores, time to ambulation, hospital length of stay, or time to return to work after discharge. CONCLUSION The efficacy of TAP block is not apparent likely due to the ERAS protocol set in place for bariatric surgery, which already targets early postoperative pain control and mobility.", "corpus_id": 52141004, "venue": "American journal of surgery", "year": 2019, "author_names": [ "Alan A Saber", "Young Lee", "Arjun Chandrasekaran", "Namik Olivia", "Armand P Asarian", "Samir Al-Ayoubi", "Robert Digregorio" ], "n_citations": 16, "n_key_citations": 5, "score": 1 }, { "doc_id": "58024610", "title": "Dexamethasone added to local anesthetics in ultrasound guided transversus abdominis plain (TAP) block for analgesia after abdominal surgery: A systematic review and meta analysis of randomized controlled trials", "abstract": "Objective To evaluate the analgesic efficacy of dexamethasone added to local anesthetics in ultrasound guided transversus abdominis plane (TAP) block for the patients after abdominal surgery. Methods PubMed, CENTRAL, EMBASE, Web of science were searched to identify eligible randomized controlled trials (RCTs) that compared dexamethasone added to local anesthetics in ultrasound guided TAP block with control for postoperative analgesia in adult patients undergoing abdominal surgery. Primary outcomes included postoperative pain intensity, the time to the first request for additional analgesics, and opioid consumption over 24 h after surgery. Secondary outcome was the incidence of postoperative nausea and vomiting. Analysis was performed by RevMan 5.3 software and the quality of evidence was rated using GRADE (Grading of Recommendations, Assessment, Development and Evaluation) approach. Results Nine RCTs involving 575 patients were included. Compared to the control, dexamethasone added to local anesthetics in ultrasound guided TAP block significantly decreased visual analogue scale (VAS) scores at rest at 4h (mean difference [MD] 1.01; 95% confidence intervals [CI] 1.29 to 0.73; P<0.00001; moderate quality of evidence) 6h (MD 1.21; 95% CI, 1.74 to 0.69; P<0.00001; low quality of evidence) and 12h after surgery (MD 0.79; 95% CI, 0.97 to 0.60; P<0.00001; moderate quality of evidence) No difference was found at 2h (MD 0.64; 95% CI, 1.35 to 0.08; P 0.08; low quality of evidence) and 24 h (MD 0.41; 95% CI, 0.91 to 0.09; P 0.11; moderate quality of evidence) in VAS scores. The time to the first request for additional analgesics was prolonged in the dexamethasone group (MD 3.08; 95% CI, 2.37 to 3.78; P<0.00001; moderate quality of evidence) Opioid consumption over 24 h after surgery was also reduced (MD 5.42; 95% CI, 8.20 to 2.63; P 0.0001; low quality of evidence) Meanwhile, the incidence of postoperative nausea and vomiting was significantly decreased in the dexamethasone group (risk ratios [RR] 0.40; 95% CI, 0.28 to 0.58; P<0.00001; high quality of evidence) No complications were reported in all the included studies. Conclusions Dexamethasone added to local anesthetics in ultrasound guided TAP block was a safe and effective strategy for postoperative analgesia in adult patients undergoing abdominal surgery.", "corpus_id": 58024610, "venue": "PloS one", "year": 2019, "author_names": [ "Donghang Zhang", "Cheng Zhou", "Dang Wei", "Long Ge", "Qian Li" ], "n_citations": 22, "n_key_citations": 1, "score": 0 }, { "doc_id": "58633488", "title": "Preoperative Transversus Abdominis Plane (TAP) Block with Liposomal Bupivacaine for Bariatric Patients to Reduce the Use of Opioid Analgesics", "abstract": "IntroductionPostoperative pain remains the most common challenge following inpatient and outpatient surgeries, and, therefore, opioid analgesics are widely used during the perioperative period. The aim of this study is to examine the efficiency of transversus abdominis plane (TAP) block using liposomal bupivacaine in reducing the use of opioid analgesics during the perioperative period of bariatric procedures.Material and MethodsA retrospective chart review was performed on 191 patients who underwent a laparoscopic bariatric procedure between September 13, 2017, and February 26, 2018. A total of 97 patients received TAP block with liposomal bupivacaine, and 94 patients did not receive TAP block.ResultsBaseline patient characteristics were comparable between the two groups. The mean age was 43.7 and 41.1 years, and the mean preoperative body mass index (BMI) was 45.6 and 46.1 kg/m2 in TAP and non TAP groups, respectively. In the TAP group, 65 patients (69.2% received intravenous (IV) hydromorphone or morphine while 93 (95.9% did in the non TAP group (p 0.0001) In the TAP group, 44 (46.8% received oral opioid analgesic while 73 (75.3% did in the non TAP group (p 0.0001) The odds of receiving IV hydromorphone or morphine for TAP group was about 0.10 times the corresponding odds for non TAP group, and the odds of receiving oral opioid analgesic for the TAP group was about 0.29 times the corresponding odds for the non TAP group.ConclusionThe use of preoperative TAP block with liposomal bupivacaine significantly decreased the use of IV and oral opioid analgesics. A larger prospective study may be needed to further validate the results.", "corpus_id": 58633488, "venue": "Obesity Surgery", "year": 2019, "author_names": [ "Rena C Moon", "Linda Lastrapes", "Jameson Wier", "Mark Nakajima", "Wyatt Gaskins", "Andre F Teixeira", "Muhammad A Jawad" ], "n_citations": 8, "n_key_citations": 0, "score": 1 }, { "doc_id": "210041798", "title": "Comparison of Therapeutic Benefit of Bupivacaine HCl Transversus Abdominis Plane (TAP) Block as Part of an Enhanced Recovery Pathway versus Traditional Oral and Intravenous Pain Control after Minimally Invasive Colorectal Surgery: A Prospective, Randomized, Double Blind Trial", "abstract": "Enhanced recovery pathways (ERPs) when combined with transversus abdominis plane (TAP) blocks, have been proven to reduce the length of stay (LOS) and improve quality outcomes. Nonopioid pain management is an essential component of this pathway, leading to a reduction in immobility, postoperative ileus, and an increase in patient satisfaction. TAP block variations have been studied in general and gynecologic surgery. This study evaluates the effectiveness of laparoscopic TAP blocks in conjunction with the benefit of an ERP. One hundred thirty seven consecutive laparoscopic and robotic assisted Colorectal Surgery patients received TAP blocks under laparoscopic guidance while under anesthesia, randomized to a placebo, bupivacaine TAP block, or bupivacaine TAP block with an ERP arm of the trial. Patient demographics, operative techniques, and postoperative outcomes were analyzed using statistical analysis software. Our main objective was to determine short term benefits of TAP blocks on reducing total narcotic consumption. Secondary objectives included effects of TAP blocks on time to ambulation, time to bowel function, and LOS. To isolate the effect of the TAP blocks, no efforts were made to control nursing or patient education in patients managed without an ERP. Of 137 patients, 14 were withdrawn. All cases were elective, with the main diagnosis colon cancer or dysplastic polyps (47.1% The median age in each group was comparable (P 0.12) with female majority in both groups (58.5% Most procedures were segmental colon resections (74.7% Thirty one patients received a placebo, 41 bupivacaine TAP, and 51 bupivacaine TAP plus ERP. In terms of primary endpoints, the bupivacaine plus ERP arm used statistically significant less IV narcotics on postoperative day 1 and in total (P 0.001, P 0.008) All patients ambulated on average within the first 24 hours postoperatively, with the TAP plus ERP group approximately 0.5 days sooner (P 0.001) The TAP plus ERP group also had a return of bowel function and LOS approximately 24 hours early (P 0.001 and P 0.001) This study shows that a laparoscopically placed bupivacaine TAP block when used as part of an ERP can reduce LOS, postoperative narcotics, time to ambulation and bowel function, and LOS. Defined pain regimens with auxiliary staff teaching can add to the improvement in quality outcomes in laparoscopic colorectal surgery and, with the addition of the TAP block, can add to patient satisfaction and lower hospital costs.", "corpus_id": 210041798, "venue": "The American surgeon", "year": 2019, "author_names": [ "Amir A Damadi", "Elizabeth A Lax", "Lauren Smithson", "Ralph Pearlman" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "59944059", "title": "Ultrasound guided bilateral subcostal TAP block for epigastric hernia repair: A case series", "abstract": "The transversus abdominis plane (TAP) block is a field block and it involves myocutaneous nerves supplying the anterior abdominal wall (T6 to L1) It can be performed through the classical posterior or subcostal approaches.[1] It is commonly used as an adjunct to perioperative analgesia in a wide variety of surgeries, but reports on its role as a sole anaesthetic technique are scarce.[2,3,4] We present a case series of epigastric hernia repair where subcostal TAP block was used as a sole anaesthetic technique.", "corpus_id": 59944059, "venue": "Indian journal of anaesthesia", "year": 2019, "author_names": [ "Pradeep K Bhatia", "Pooja Bihani", "Swati Chhabra", "Vandana Sharma", "Rishabh Jaju" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "195769890", "title": "Quality of recovery and analgesia after total abdominal hysterectomy under general anesthesia: A randomized controlled trial of TAP block vs epidural analgesia vs parenteral medications", "abstract": "Background and Aims: Parenteral analgesics and epidural analgesia are two standard options to treat postoperative pain after total abdominal hysterectomy (TAH) Fascial plane blocks such as transversus abdominis plane (TAP) block have gained popularity recently. However, effect of these analgesic regimens on quality of postoperative recovery (QoR) has not been studied. Hence we aimed to assess and compare the QoR with three different postoperative analgesic regimens parenteral analgesia, epidural analgesia, and TAP block in patients undergoing TAH under general anesthesia. Material and Methods: Sixty female patients undergoing TAH were randomized into three groups of 20 each for postoperative analgesia. Epidural group received boluses of 0.125% bupivacaine for 24 h, parenteral group received injection diclofenac and injection tramadol alternately every 6 h for 24 h, and TAP group received bilateral TAP block with 0.25% bupivacaine at end of operation. QoR was assessed postoperatively by 40 item questionnaire QOR 40 and pain was assessed by numerical rating scale (NRS) Results: QOR 40 score was comparable across the three groups at 24, 48, and 72 h postoperatively. TAP block prolonged the time to first rescue analgesic (P 0.02) and reduced the total 24 h postoperative morphine consumption by 2.4 (95% CI: 1.0, 3.8) mg (P 0.002) and 7.8 (95% CI: 6.4, 9.1) mg (P 0.001) when compared with epidural and parenteral groups, respectively. Conclusion: The QoR after abdominal hysterectomy is similar with either intravenous analgesics or epidural analgesia or TAP block when used with rescue analgesia to manage postoperative pain. TAP block provides superior analgesia and reduces 24 h morphine consumption when compared with parenteral and epidural analgesia.", "corpus_id": 195769890, "venue": "Journal of anaesthesiology, clinical pharmacology", "year": 2019, "author_names": [ "Preethy J Mathew", "Neelam Aggarwal", "Kamlesh Kumari", "Aakriti Gupta", "Nidhi Bidyut Panda", "Rashmi Bagga" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "195769734", "title": "Transversus abdominis plane (TAP) block with levobupivacaine versus levobupivacaine with dexmedetomidine for postoperative analgesia following cesarean delivery", "abstract": "Background and Aims: Transverse abdominus plane (TAP) block provides good quality analgesia with minimal side effects. Addition of adjuvant like dexmedetomidine to the local anesthetics has been shown to prolong the action of the block in earlier studies. In this prospective randomised study TAP block with levobupivacane with or without dexmedetomidine was compared with control group for post operative analgesia following cesarean delivery. Material and Methods: Ninety healthy women undergoing cesarean delivery under spinal anesthesia were randomized into three groups (GroupC, GroupL and Group LD) And following this Group L received ultrasound guided bilateral TAP block with 20 ml 0.25% levobupivacaine on each side, while Group LD received TAP block with same volume of levobupivacaine with 1mg/kg of dexmedetomidine. Group C, the control group did not receive TAP block. Postoperatively, time for first request for rescue analgesia and the number of women requesting analgesia in 6 h, 12 h and 24 h were noted. Pain score was measured with the Visual Analogue Scale (VAS) at rest and on movement for the first 24 h. Patient comfort and satisfaction with analgesia was evaluated at the end of 24 h. Results: Time for first rescue analgesia was significantly longer and patient satisfaction scores were significantly higher in patients who received TAP block (Groups LD and L) as compared to control (Group C) Pain scores were also lower in the TAP block groups compared to control group. Among the women who received TAP block, those with dexmedetomidine group (Group LD) asked for rescue analgesia significantly later compared to group L. Patient satisfaction score was highest in the Group LD compared to Group L which in turn was better than control group. There were no significant differences in the observed side effects. Conclusion: Bilateral TAP block with 0.25% levobupivacaine provides good quality analgesia for early postoperative period. Adding dexmedetomidine further improves pain control and gives higher patient satisfaction without any added side effects.", "corpus_id": 195769734, "venue": "Journal of anaesthesiology, clinical pharmacology", "year": 2019, "author_names": [ "Aman Varshney", "Manjunath Prabhu", "Bhavya Periyadka", "Divyashri C Nanjundegowda", "Amrut Krishnananda Rao" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "92996777", "title": "The TAP block in obese patients: pros cons.", "abstract": "The growing number of laparoscopic surgical procedures performed in obese patients has increased the need to explore suitable analgesic techniques for a prone population to postoperative complications. The morbidly obese population may particularly benefit from the opioid sparing or the opioid free anaesthesia/analgesia, which maximize the use of loco regional techniques. Transversus abdominal plane (TAP) block has been widely used as part of multimodal analgesia for abdominal and gynecological surgeries, but evidence in obese patients is still poor. The efficacy of TAP block in morbidly obese patients undergoing laparoscopic bariatric surgery is still under discussion, because ultrasound visualization of the abdominal wall muscles can be challenging due to the excessive subcutaneous fat. Inadequate needle positioning, failed regional analgesia, and possible related risks must be counterbalanced by adequate evidence of effectiveness. The present article will discuss the pros and cons of TAP block in the treatment of obese patients.", "corpus_id": 92996777, "venue": "Minerva anestesiologica", "year": 2019, "author_names": [ "Jaime Ruiz-Tovar", "Eric Albrecht", "Alan James Robert Macfarlane", "Flaminia Coluzzi" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "85497730", "title": "Application of TAP Block in Laparoscopic Urological Surgery: Current Status and Future Directions", "abstract": "Purpose of ReviewAmid the opioid crisis, postoperative pain management is a major challenge for practitioners. Recent pain management guidelines emphasize the importance of using regional anesthesia as part of opioid sparing multimodal analgesia. This report aims to review recent evidence regarding the utilization of transversus abdominis plane (TAP) block in minimally invasive urologic surgery.Recent FindingsTAP block has been shown to improve early and late pain at rest, and to reduce opioid consumption after minimally invasive surgery. These benefits have indirectly reduced the incidence of postoperative delirium, pneumonia, urinary retention, and falls. Compared to epidural analgesia, TAP block provides similar pain control, has a lower incidence of hypotension, and is associated with a shorter length of stay.SummaryFew studies focus specifically on the outcomes of TAP block in minimally invasive urologic surgery. TAP block decreases postoperative pain and reduces opioid consumption without increasing complications. TAP block should be integrated as an indispensable component in enhanced recovery after surgery protocols.", "corpus_id": 85497730, "venue": "Current Urology Reports", "year": 2019, "author_names": [ "Mohammed Shahait", "David I Lee" ], "n_citations": 10, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "216652178", "title": "Image Enhancement Algorithm Based on Wavelet Transform", "abstract": "In recent years, with the rapid development of science and technology, as a mathematical analysis tool, wavelet transform with multi scale resolution features has replaced the role of the traditional technical methods in many engineering applications. This thesis first introduces the basic theory of wavelet transformation and the basic principle of the related image in de noising and enhancement. Second, the thesis is combined with the characteristics of the seismic image and the noise, and the seismic image de noising and enhancement are discussed in detail by wavelet analysis. The soft and hard threshold methods have been selected. And the threshold function of the wavelet has been bettered; then the histogram equalization is used to improve the image contrast. Finally, it is concluded that the new threshold function can effectively remove the noise and obviously enhance the effect of the image de noising.", "corpus_id": 216652178, "venue": "", "year": 2020, "author_names": [ "Wenjun Zhang", "Chao Chen" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "225118806", "title": "Low contrast image enhancement using spatial contextual similarity histogram computation and color reconstruction", "abstract": "Abstract This paper presents an adaptive enhancement framework for low contrast images to improve the deteriorated details and color information. The proposed algorithm is composed of two adaptive steps: Contrast enhancement and Color restoration. Firstly, according to the luminance map separated from the RGB image, a new spatial contextual similarity histogram (SCSH) is developed. The new SCSH considers the gray level similarities among the adjacent pixels, following the standard deviation value of the luminance image. The contrast enhanced image is obtained by applying the intensity transformation function derived from the cumulative distribution function obtained from the normalized values of SCSH. An adaptive weighted fusion is carried out between the luminance enhanced channel and original luminance channel with the weights computed from the enhanced luminance channel. Secondly, an adaptive color restoration technique is designed to reconstruct the more consistent color image using original chromatic information and modified luminance. The results are analyzed using the statistical paired t test. Both objective and subjective experimentation prove the supremacy of the proposed algorithm with conventional and state of the art algorithms.", "corpus_id": 225118806, "venue": "J. Frankl. Inst.", "year": 2020, "author_names": [ "Kankanala Srinivas", "Ashish Kumar Bhandari", "Ashutosh Kumar Singh" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "164835939", "title": "Adaptive image enhancement method for correcting low illumination images", "abstract": "Abstract In this study, to improve the adaptability of image enhancement in images with low illumination, a colored image correction method based on nonlinear functional transformation according to the illumination reflection model and multiscale theory is proposed. First, the original RGB image is converted to HSV color space, and the V component is used to extract the illumination component of the scene using the multiscale Gaussian function. Then, a correction function is constructed based on the Weber Fechner law, and two images are obtained through adaptive adjustments to the image enhancement function parameters based on the distribution profiles of the illumination components. Finally, an image fusion strategy is formulated and used to extract the details from the two images. Compared with the classic algorithm, the proposed algorithm can improve the overall brightness and contrast of an image while reducing the impact of uneven illumination. The enhanced images appear clear, bright, and natural.", "corpus_id": 164835939, "venue": "Inf. Sci.", "year": 2019, "author_names": [ "Wencheng Wang", "Zhenxue Chen", "Xiaohui Yuan", "Xiaojin Wu" ], "n_citations": 29, "n_key_citations": 2, "score": 1 }, { "doc_id": "219616278", "title": "Optimization of Feature Loss for Image Enhancement", "abstract": "Image transformation problem is a problem in which an input image is transformed to an output image. In most of the recent methods, a feed forward neural network is defined which utilizes per pixel loss between the output image and the ground truth image. In this paper we have showcased that highquality images can be generated by defining a feature loss function which is based on high level perceptual features extracted from pre trained convolutional networks. We have combined both the approaches that have been formerly mentioned and have proposed a feature loss function for training a feed forward neural network capable of image transformation tasks. We have compared out method with that of an optimization based approach, similar to the one utilized in Generative Adversarial Networks (GANs) and our method produced visually appealing results whilst fully capturing the intricate details of the object in the image.", "corpus_id": 219616278, "venue": "", "year": 2020, "author_names": [ "Vishal Burman", "Harshinee Sriram", "S Usha Kiruthika" ], "n_citations": 0, "n_key_citations": 0, "score": 2 }, { "doc_id": "85500760", "title": "Remote Sensing Image Enhancement Via Edge Preserving Multiscale Retinex", "abstract": "Recently, an image enhancement receives a considerable research attention due to its wide application. In this paper, we propose a novel algorithm to enhance the contrast of remote sensing image while avoiding color distortion and detail loss. First, based on the Sobel operator strength, the local adaptive weighting parameter is obtained to penalize the fixed regularization parameter of original guided filtering. Then, the grayscale difference between flat patch and edge patch, which is caused by the fixed regularization parameter is amplified meanwhile without sacrificing the denoising performance. Finally, the Gaussian filtering of original multiscale retinex with color restoration is replaced with the guided filtering based on the Sobel edge detection operator to estimate the incident component of an image. Comparing with the previous algorithms, the proposed one can obtain more edge details and better color fidelity but with lower computational complexity and higher efficiency.", "corpus_id": 85500760, "venue": "IEEE Photonics Journal", "year": 2019, "author_names": [ "Lu Teng", "Feng Xue", "Qiudi Bai" ], "n_citations": 10, "n_key_citations": 0, "score": 0 }, { "doc_id": "212575547", "title": "Spatial domain image enhancement techniques for acute myeloid leukemia (M1,M4,M5,M7)", "abstract": "In this paper, several techniques of image enhancement spatial domain is elucidated and analyzed for the purpose of enhancing Acute Myeloid Leukemia (AML) subtype of M1, M4, M5 and M7. The techniques involved contrast stretching of greyscale images, image subtraction and image sharpening. The three methods compared with one another to achieve the highest PSNR value for the suitability technique of AML subtypes (M1, M4, M5 and M7) Firstly, subtypes images converted into grayscale. Then, each four images tested with contrast stretching techniques followed by image subtraction and image sharpening. The performances were evaluated based on Mean Square Error (MSE) and Peak Signal to Noise Ratio (PSNR) Due to its higher value obtained, image sharpening is a good enhancement techniques for Acute Myeloid Leukemia with 68.2083 dB and the lowest MSE achieved of 0.0103.", "corpus_id": 212575547, "venue": "Indonesian Journal of Electrical Engineering and Computer Science", "year": 2019, "author_names": [ "A S A Salam", "M N M Isa", "M I Ahmad" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "57256842", "title": "Image Enhancement Using Fuzzy Logic Techniques", "abstract": "Image enhancement is the preprocessing task in digital image processing. It helps to improve the appearance or perception of the image so that the image can be used for analytics and human visual system. Image enhancement techniques lie in three broad categories spatial domain, frequency domain, and fuzzy domain based enhancement. A lot of work has been done on image enhancement. Most of the work has been done/performed on grayscale image. This paper concentrates on image enhancement using fuzzy logic approach and gives an insight into previous research work and future perspectives.", "corpus_id": 57256842, "venue": "", "year": 2019, "author_names": [ "Preeti Mittal", "Rajesh Kumar Saini", "Neeraj Kumar Jain" ], "n_citations": 5, "n_key_citations": 0, "score": 0 }, { "doc_id": "61807960", "title": "A Pipeline Neural Network for Low Light Image Enhancement", "abstract": "Low light image enhancement is an important challenge in computer vision. Most of the low light images taken in low light conditions usually look noisy and dark, which makes it more difficult for subsequent computer vision tasks. In this paper, inspired by multi scale retinex, we present a low light image enhancement pipeline network based on an end to end fully convolutional networks and discrete wavelet transformation (DWT) First, we show that multiscale retinex (MSR) can be considered as a convolutional neural network with Gaussian convolution kernel, and blending the result of DWT can improve the image produced by MSR. Second, we propose our pipeline neural network, consisting of denoising net and low light image enhancement net, which learns a function from a pair of dark and bright images. Finally, we evaluate our method both in the synthetic dataset and public dataset. The experiments reveal that in comparison with other state of the art methods, our methods achieve a better performance in the perspective of qualitative and quantitative analyses.", "corpus_id": 61807960, "venue": "IEEE Access", "year": 2019, "author_names": [ "Yanhui Guo", "Xue Ke", "Jie Ma", "Jun Zhang" ], "n_citations": 21, "n_key_citations": 1, "score": 0 }, { "doc_id": "149589363", "title": "A Review on Image Enhancement Techniques", "abstract": "Image Enhancement is one of the most important and complex techniques in image processing technology. The main aim of image enhancement is to improve the visual appearance on an image and to offer a better representation of the image for Computer Vision Algorithms. In this paper,we is covered a few application fields of image enhancement with various images like grayscale, color, infrared and even with videos. The main objective of this paper is to highlight the drawbacks of the state of the art image enhancement techniques.", "corpus_id": 149589363, "venue": "Southeast Europe Journal of Soft Computing", "year": 2019, "author_names": [ "Haris Ackar", "Ali Abd Almisreb", "Mohamed Ali Saleh" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "201874109", "title": "An inquiry on image enhancement methods of remote sensing images", "abstract": "Remote sensing image enhancement algorithm, which can enhance the contrast of image without changing its information, is crucial for the acquisition and analysis of remote sensing information. In this paper, we compare the performance of several state of the art enhancement algorithms in processing remote sensing images. We classify and refine the main idea of each algorithm, and evaluate the enhancement effect with subjective evaluation and objective metrics such as entropy, brightness, contrast and mean gradient. In order to avoid color enhanced interference, this paper took experiments both on RGB pictures and grayscale pictures. The significance and compared results were shown in the following paper.", "corpus_id": 201874109, "venue": "International Conference on Digital Image Processing", "year": 2019, "author_names": [ "Jiwei Liu", "Xiaoqiu Pu", "Desheng Wen", "Zongxi Song", "Junyu Chen" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "4327732", "title": "A computer algorithm for reconstructing a scene from two projections", "abstract": "A simple algorithm for computing the three dimensional structure of a scene from a correlated pair of perspective projections is described here, when the spatial relationship between the two projections is unknown. This problem is relevant not only to photographic surveying1 but also to binocular vision2, where the non visual information available to the observer about the orientation and focal length of each eye is much less accurate than the optical information supplied by the retinal images themselves. The problem also arises in monocular perception of motion3, where the two projections represent views which are separated in time as well as space. As Marr and Poggio4 have noted, the fusing of two images to produce a three dimensional percept involves two distinct processes: the establishment of a 1:1 correspondence between image points in the two views the 'correspondence problem' and the use of the associated disparities for determining the distances of visible elements in the scene. I shall assume that the correspondence problem has been solved; the problem of reconstructing the scene then reduces to that of finding the relative orientation of the two viewpoints.", "corpus_id": 4327732, "venue": "Nature", "year": 1981, "author_names": [ "Hugh Christopher Longuet-Higgins" ], "n_citations": 2697, "n_key_citations": 125, "score": 1 }, { "doc_id": "142854058", "title": "Consilience: The Unity of Knowledge", "abstract": "In this groundbreaking new book, one of the world's greatest living scientists argues for the fundamental unity of all knowledge and the need to search for what he calls consilience, the composition of the principles governing every branch of learning. Edward O Wilson, the pioneer of sociobiology and biodiversity, once again breaks out of the conventions of current thinking. He shows how our explosive rise in intellectual mastery of the truths of our universe has its roots in the ancient Greek concept of an intrinsic orderliness that governs our cosmos. It is a vision that found its apogee in the Age of Enlightenment, then gradually was lost in the increasing fragmentation and specialisation of knowledge in the last two centuries. Professor Wilson shows why the goals of the original Enlightenment are surging back to life, why they are reappearing on the very frontiers of science and human scholarship, and how they are beginning to sketch themselves as the blueprint of our world.", "corpus_id": 142854058, "venue": "", "year": 1998, "author_names": [ "Edward O Wilson" ], "n_citations": 2373, "n_key_citations": 85, "score": 1 }, { "doc_id": "6575336", "title": "Multi level Partition of Unity Implicits", "abstract": "1. Briefly summarize the paper's contributions. Does it address a new problem? Does it present a new approach? Does it show new types of results? [AS] This paper presents a new approach to construct surface models from extremely large point sets using piecewise quadratic functions that capture the local shape of the surface, and then blending them together using multi level partitions of unity as weighting functions. This is the first method to use partitions of the point set into regions to fit implicit functions to, as opposed to function fitting at every point, in previous methods. [DS] The paper presents a surface representation using multi level partition of unity (MPU) implicit surfaces. Presents an approach with the 3 key concepts: 1. Piecewise quadratic functions used as local shape estimates for the surface. 2. Weighing functions (partition of unity) to blend the local shape functions. 3. Octree subdivision that adapts based on shape complexity. This approach is adaptive based on the desired accuracy. The use of implicit functions provide data repairing capabilities for scattered data and an easy way to perform implicit modeling operations. [FP] This paper proposes a method to implicitly define a surface as the zero level of a distance function. The space is partitioned in octree cells and a shape function is fitted to each cell. In contrast to previous approaches (such as Hoppe 92) the distance to the surface (i.e. the implicit function evaluation) is not computed respect to a single element of the space partition (in this case, an octree cell) but is a weighted sum. Due to the partition of unity approach and the use of smooth weighting function, the distance function changes smoothly along the 3D space. [JD] [LF] The paper introduces the partition of unity approach for approximation of the signed distance function of a set of scattered points with normals. The method breaks up the point set using octree subdivision (can handle complex topology) It then uses piecewise quadratic function as local approximations of the surface. These local approximations are blended together using smooth, local weights (can represent sharp features) [MK] This paper proposes an efficient, octree based, algorithm for reconstructing surfaces from oriented point samples. The approach falls somewhere between global implicit methods and MLS approaches, as the approach partitions space, computes a local implicit surface around each partition, and then glues these together using a partition", "corpus_id": 6575336, "venue": "", "year": null, "author_names": [ "Yutaka Ohtake", "Alexander G Belyaev", "Marc Alexa", "Greg Turk", "Hans-Peter Seidel" ], "n_citations": 360, "n_key_citations": 46, "score": 1 }, { "doc_id": "8430733", "title": "Scene completion using millions of photographs", "abstract": "What can you do with a million images? In this paper, we present a new image completion algorithm powered by a huge database of photographs gathered from the Web. The algorithm patches up holes in images by finding similar image regions in the database that are not only seamless, but also semantically valid. Our chief insight is that while the space of images is effectively infinite, the space of semantically differentiable scenes is actually not that large. For many image completion tasks, we are able to find similar scenes which contain image fragments that will convincingly complete the image. Our algorithm is entirely data driven, requiring no annotations or labeling by the user. Unlike existing image completion methods, our algorithm can generate a diverse set of image completions and we allow users to select among them. We demonstrate the superiority of our algorithm over existing image completion approaches.", "corpus_id": 8430733, "venue": "Commun. ACM", "year": 2008, "author_names": [ "James Hays", "Alexei A Efros" ], "n_citations": 387, "n_key_citations": 36, "score": 0 }, { "doc_id": "220996717", "title": "Auditory Scene Analysis", "abstract": "A mixture of sounds, though distinct in the environment, arrives in the form of a single pressure wave at each ear. From it, listeners must extract the signals coming from individual sources of sound, a process called auditory scene analysis (ASA) ASA first characterizes the incoming waveform by its frequency components and other features, then creates subsets (auditory streams) that extend over time, each representing a single environmental sound source. ASA exploits regularities in the signal to determine how to parse it. ASA is present at birth in humans and has been found in other animals.", "corpus_id": 220996717, "venue": "", "year": 2009, "author_names": [ "Albert S Bregman" ], "n_citations": 8, "n_key_citations": 0, "score": 1 }, { "doc_id": "123450931", "title": "Adaptive speckle filters and scene heterogeneity", "abstract": "The presence of speckle in radar images makes the radiometric and textural aspects less efficient for class discrimination. Many adaptive filters have been developed for speckle reduction, the most well known of which are analyzed. It is shown that they are based on a test related to the local coefficient of variation of the observed image, which describes the scene heterogeneity. Some practical criteria are introduced to modify the filters in order to make them more efficient. The filters are tested on a simulated synthetic aperture radar (SAR) image and an SAR 580 image. As was expected, the new filters perform better, i.e. they average the homogeneous areas better and preserve texture information, edges, linear features, and point target responses better at the same time. Moreover, they can be adapted to features other than the coefficient of variation to reduce the speckle while preserving the corresponding information.", "corpus_id": 123450931, "venue": "", "year": 1990, "author_names": [ "Armand Lopes", "Ridha Touzi", "Edmond Nezry" ], "n_citations": 934, "n_key_citations": 60, "score": 0 }, { "doc_id": "195592487", "title": "The Auditory Scene. (Book Reviews: Auditory Scene Analysis. The Perceptual Organization of Sound.", "abstract": "Auditory Scene Analysis addresses the problem of hearing complex auditory environments, using a series of creative analogies to describe the process required of the human auditory system as it analyzes mixtures of sounds to recover descriptions of individual sounds. In a unified and comprehensive way, Bregman establishes a theoretical framework that integrates his findings with an unusually wide range of previous research in psychoacoustics, speech perception, music theory and composition, and computer modeling.", "corpus_id": 195592487, "venue": "", "year": 1990, "author_names": [ "Albert S Bregman" ], "n_citations": 2726, "n_key_citations": 326, "score": 0 }, { "doc_id": "18603445", "title": "Scene Labeling by Relaxation Operations", "abstract": "Given a set of objects in a scene whose identifications are ambiguous, it is often possible to use relationships among the objects to reduce or eliminate the ambiguity. A striking example of this approach was given by Waltz [13] This paper formulates the ambiguity reduction process in terms of iterated parallel operations (i.e. relaxation operations) performed on an array of (object, identification) data. Several different models of the process are developed, convergence properties of these models are established, and simple examples are given.", "corpus_id": 18603445, "venue": "IEEE Transactions on Systems, Man, and Cybernetics", "year": 1976, "author_names": [ "Azriel Rosenfeld", "Robert A Hummel", "Steven W Zucker" ], "n_citations": 1555, "n_key_citations": 81, "score": 0 }, { "doc_id": "7276309", "title": "Computational auditory scene analysis", "abstract": "Abstract Although the ability of human listeners to perceptually segregate concurrent sounds is well documented in the literature, there have been few attempts to exploit this research in the design of computational systems for sound source segregation. In this paper, we present a segregation system that is consistent with psychological and physiological findings. The system is able to segregate speech from a variety of intrusive sounds, including other speech, with some success. The segregation system consists of four stages. Firstly, the auditory periphery is modelled by a bank of bandpass filters and a simulation of neuromechanical transduction by inner hair cells. In the second stage of the system, periodicities, frequency transitions, onsets and offsets in auditory nerve firing patterns are made explicit by separate auditory representations. The representations, auditory maps are based on the known topographical organization of the higher auditory pathways. Information from the auditory maps is used to construct a symbolic description of the auditory scene. Specifically, the acoustic input is characterized as a collection of time frequency elements, each of which describes the movement of a spectral peak in time and frequency. In the final stage of the system, a search strategy is employed which groups elements according to the similarity of their fundamental frequencies, onset times and offset times. Following the search, a waveform can be resynthesized from a group of elements so that segregation performance may be assessed by informal listening tests. The system has been evaluated using a database of voiced speech mixed with a variety of intrusive noises such as music, \"office\" noise and other speech. A technique for quantitative evaluation of the system is described, in which the signal to noise ratio (SNR) is compared before and after the segregation process. After segregation, an increase in SNR is obtained for each noise condition. Additionally, the performance of our system is significantly better than that of the frame based segregation scheme described by Meddis and Hewitt (1992)", "corpus_id": 7276309, "venue": "Comput. Speech Lang.", "year": 1994, "author_names": [ "Guy J Brown", "Martin Cooke" ], "n_citations": 829, "n_key_citations": 55, "score": 0 }, { "doc_id": "6740010", "title": "The Dynamic Representation of Scenes", "abstract": "One of the more powerful impressions created by vision is that of a coherent, richly detailed world where everything is present simultaneously. Indeed, this impression is so compelling that we tend to ascribe these properties not only to the external world, but to our internal representations as well. But results from several recent experiments argue against this latter ascription. For example, changes in images of real world scenes often go unnoticed when made during a saccade, flicker, blink, or movie cut. This change blindness provides strong evidence against the idea that our brains contain a picture like representation of the scene that is everywhere detailed and coherent. How then do we represent a scene? It is argued here that focused attention provides spatiotemporal coherence for the stable representation of one object at a time. It is then argued that the allocation of attention can be coordinated to create a virtual representation. In such a scheme, a stable object representation is formed whenever needed, making it appear to higher levels as if all objects in the scene are represented in detail simultaneously.", "corpus_id": 6740010, "venue": "", "year": 2007, "author_names": [ "Ronald A Rensink" ], "n_citations": 831, "n_key_citations": 90, "score": 0 } ]

[ { "doc_id": "59524107", "title": "IoT and agriculture data analysis for smart farm", "abstract": "Abstract In this paper, we propose developing a system optimally watering agricultural crops based on a wireless sensor network. This work aimed to design and develop a control system using node sensors in the crop field with data management via smartphone and a web application. The three components are hardware, web application, and mobile application. The first component was designed and implemented in control box hardware connected to collect data on the crops. Soil moisture sensors are used to monitor the field, connecting to the control box. The second component is a web based application that was designed and implemented to manipulate the details of crop data and field information. This component applied data mining to analyze the data for predicting suitable temperature, humidity, and soil moisture for optimal future management of crops growth. The final component is mainly used to control crop watering through a mobile application in a smartphone. This allows either automatic or manual control by the user. The automatic control uses data from soil moisture sensors for watering. However, the user can opt for manual control of watering the crops in the functional control mode. The system can send notifications through LINE API for the LINE application. The system was implemented and tested in Makhamtia District, Suratthani Province, Thailand. The results showed the implementation to be useful in agriculture. The moisture content of the soil was maintained appropriately for vegetable growth, reducing costs and increasing agricultural productivity. Moreover, this work represents driving agriculture through digital innovation.", "corpus_id": 59524107, "venue": "Comput. Electron. Agric.", "year": 2019, "author_names": [ "Jirapond Muangprathub", "Nathaphon Boonnam", "Siriwan Kajornkasirat", "Narongsak Lekbangpong", "Apirat Wanichsombat", "Pichetwut Nillaor" ], "n_citations": 211, "n_key_citations": 4, "score": 1 }, { "doc_id": "68241012", "title": "Evolution of Internet of Things (IoT) and its significant impact in the field of Precision Agriculture", "abstract": "Abstract During recent years, one of the most familiar name scaling new heights and creating a benchmark is Internet of Things (IoT) It is indeed the future of communication that has transformed Things (Objects) of the real world into smarter devices. The functional aspect of IoT is to unite every object of the world in such a manner that humans have the ability to control them via Internet. Furthermore, these objects also provide regular as well as timely updates on their current status to its end user. Although IoT concepts were proposed a couple of years ago, it may not be incorrect to quote that this term has become a benchmark for establishing communication among objects. In context to the present standings of IoT, identification of the most prominent applications in the field of IoT have been highlighted and a comprehensive review has been done specifically in the field of Precision Agriculture. This article evaluates contributions made by various researchers and academicians over the past few years. Furthermore, existing challenges faced while performing agricultural activities have been highlighted along with future research directions to equip novel researchers of this domain to assess the current standings of IoT and to further improve upon them with more inspiring and innovative ideas.", "corpus_id": 68241012, "venue": "Comput. Electron. Agric.", "year": 2019, "author_names": [ "Abhishek Khanna", "Sanmeet Kaur" ], "n_citations": 167, "n_key_citations": 3, "score": 0 }, { "doc_id": "214013636", "title": "Improving weather dependent zone specific irrigation control scheme in IoT and big data enabled self driven precision agriculture mechanism", "abstract": "ABSTRACT Precision agriculture involves manipulation of variations in field productivity, maximization of income, scale backing of wastes, and minimizing of the impact on surroundings using automated machine controlled information assortment and documentation. This work focuses on the efficient control of farm irrigation by exploiting the capabilities of Internet of Things (IoT) and Big Data based Decision Support System (DSS) to generate adequate valve control commands. Three varieties of prediction techniques such as Deep Neural Network (DNN) Random Forest (RF) and Resilient Back Propagation Neural Network model are tested to predict soil Moisture Content (MC) in one hour advance by considering 6 numbers of different sensors. The real time data collection is performed using the proposed IoT node deployment strategy tested in the field. An integrated IoT based DSS framework is proposed to accumulate 17 numbers of soil and environmental parameters to predict future variation of soil MC in 1 h advance. Further, Structural Similarity (SSIM) Index is used to visualize and maintain uniform MC all over the agriculture area during the entire cropping period. Site and zone specific irrigation control scheme is tested in the test site using fuzzy logic based weather dependent model. The complete system architecture, deployment strategy and performance of the proposed IoT based DSS mechanism is discussed in this article.", "corpus_id": 214013636, "venue": "Enterp. Inf. Syst.", "year": 2020, "author_names": [ "Bright Keswani", "Ambarish G Mohapatra", "Poonam Keswani", "Ashish Khanna", "Deepak Gupta", "Joel J P C Rodrigues" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "211215557", "title": "IoT Based Smart Irrigation Systems: An Overview on the Recent Trends on Sensors and IoT Systems for Irrigation in Precision Agriculture", "abstract": "Water management is paramount in countries with water scarcity. This also affects agriculture, as a large amount of water is dedicated to that use. The possible consequences of global warming lead to the consideration of creating water adaptation measures to ensure the availability of water for food production and consumption. Thus, studies aimed at saving water usage in the irrigation process have increased over the years. Typical commercial sensors for agriculture irrigation systems are very expensive, making it impossible for smaller farmers to implement this type of system. However, manufacturers are currently offering low cost sensors that can be connected to nodes to implement affordable systems for irrigation management and agriculture monitoring. Due to the recent advances in IoT and WSN technologies that can be applied in the development of these systems, we present a survey aimed at summarizing the current state of the art regarding smart irrigation systems. We determine the parameters that are monitored in irrigation systems regarding water quantity and quality, soil characteristics and weather conditions. We provide an overview of the most utilized nodes and wireless technologies. Lastly, we will discuss the challenges and the best practices for the implementation of sensor based irrigation systems.", "corpus_id": 211215557, "venue": "Sensors", "year": 2020, "author_names": [ "Laura Garcia", "Lorena Parra", "Jose Miguel Jimenez", "Jaime Lloret", "Pascal Lorenz" ], "n_citations": 70, "n_key_citations": 2, "score": 0 }, { "doc_id": "211298072", "title": "Security and Privacy for Green IoT Based Agriculture: Review, Blockchain Solutions, and Challenges", "abstract": "This paper presents research challenges on security and privacy issues in the field of green IoT based agriculture. We start by describing a four tier green IoT based agriculture architecture and summarizing the existing surveys that deal with smart agriculture. Then, we provide a classification of threat models against green IoT based agriculture into five categories, including, attacks against privacy, authentication, confidentiality, availability, and integrity properties. Moreover, we provide a taxonomy and a side by side comparison of the state of the art methods toward secure and privacy preserving technologies for IoT applications and how they will be adapted for green IoT based agriculture. In addition, we analyze the privacy oriented blockchain based solutions as well as consensus algorithms for IoT applications and how they will be adapted for green IoT based agriculture. Based on the current survey, we highlight open research challenges and discuss possible future research directions in the security and privacy of green IoT based agriculture.", "corpus_id": 211298072, "venue": "IEEE Access", "year": 2020, "author_names": [ "Mohamed Amine Ferrag", "Lei Shu", "Xing Yang", "Abdelouahid Derhab", "L Maglaras" ], "n_citations": 58, "n_key_citations": 2, "score": 0 }, { "doc_id": "53440761", "title": "An Overview of Internet of Things (IoT) and Data Analytics in Agriculture: Benefits and Challenges", "abstract": "The surge in global population is compelling a shift toward smart agriculture practices. This coupled with the diminishing natural resources, limited availability of arable land, increase in unpredictable weather conditions makes food security a major concern for most countries. As a result, the use of Internet of Things (IoT) and data analytics (DA) are employed to enhance the operational efficiency and productivity in the agriculture sector. There is a paradigm shift from use of wireless sensor network (WSN) as a major driver of smart agriculture to the use of IoT and DA. The IoT integrates several existing technologies, such as WSN, radio frequency identification, cloud computing, middleware systems, and end user applications. In this paper, several benefits and challenges of IoT have been identified. We present the IoT ecosystem and how the combination of IoT and DA is enabling smart agriculture. Furthermore, we provide future trends and opportunities which are categorized into technological innovations, application scenarios, business, and marketability.", "corpus_id": 53440761, "venue": "IEEE Internet of Things Journal", "year": 2018, "author_names": [ "Olakunle Elijah", "Tharek Abdul Rahman", "Igbafe Orikumhi", "Chee Yen Leow", "M H D Nour Hindia" ], "n_citations": 358, "n_key_citations": 7, "score": 1 }, { "doc_id": "174801235", "title": "Smart Sustainable Agriculture (SSA) Solution Underpinned by Internet of Things (IoT) and Artificial Intelligence (AI)", "abstract": "The Internet of Things (IoT) and Artificial Intelligence (AI) have been employed in agriculture over a long period of time, alongside other advanced computing technologies. However, increased attention is currently being paid to the use of such smart technologies. Agriculture has provided an important source of food for human beings over many thousands of years, including the development of appropriate farming methods for different types of crops. The emergence of new advanced IoT technologies has the potential to monitor the agricultural environment to ensure high quality products. However, there remains a lack of research and development in relation to Smart Sustainable Agriculture (SSA) accompanied by complex obstacles arising from the fragmentation of agricultural processes, i.e. the control and operation of IoT/AI machines; data sharing and management; interoperability; and large amounts of data analysis and storage. This study firstly, explores existing IoT/AI technologies adopted for SSA and secondly, identifies IoT/AI technical architecture capable of underpinning the development of SSA platforms. As well as contributing to the current body of knowledge, this research reviews research and development within SSA and provides an IoT/AI architecture to establish a Smart, Sustainable Agriculture platform as a solution.", "corpus_id": 174801235, "venue": "", "year": 2019, "author_names": [ "Eissa Alreshidi" ], "n_citations": 17, "n_key_citations": 1, "score": 0 }, { "doc_id": "213490090", "title": "Role of IoT Technology in Agriculture: A Systematic Literature Review", "abstract": "The growing demand for food in terms of quality and quantity has increased the need for industrialization and intensification in the agriculture field. Internet of Things (IoT) is a highly promising technology that is offering many innovative solutions to modernize the agriculture sector. Research institutions and scientific groups are continuously working to deliver solutions and products using IoT to address different domains of agriculture. This paper presents a systematic literature review (SLR) by conducting a survey of IoT technologies and their current utilization in different application domains of the agriculture sector. The underlying SLR has been compiled by reviewing research articles published in well reputed venues between 2006 and 2019. A total of 67 papers were carefully selected through a systematic process and classified accordingly. The primary objective of this systematic study is the collection of all relevant research on IoT agricultural applications, sensors/devices, communication protocols, and network types. Furthermore, it also discusses the main issues and challenges that are being investigated in the field of agriculture. Moreover, an IoT agriculture framework has been presented that contextualizes the representation of a wide range of current solutions in the field of agriculture. Similarly, country policies for IoT based agriculture have also been presented. Lastly, open issues and challenges have been presented to provide the researchers promising future directions in the domain of IoT agriculture.", "corpus_id": 213490090, "venue": "", "year": 2020, "author_names": [ "Muhammad Shoaib Farooq", "Shamyla Riaz", "Adnan Abid", "Tariq Umer", "Yousaf Bin Zikria" ], "n_citations": 41, "n_key_citations": 0, "score": 1 }, { "doc_id": "215725807", "title": "An Energy Efficient and Secure IoT Based WSN Framework: An Application to Smart Agriculture", "abstract": "Wireless sensor networks (WSNs) have demonstrated research and developmental interests in numerous fields, like communication, agriculture, industry, smart health, monitoring, and surveillance. In the area of agriculture production, IoT based WSN has been used to observe the yields condition and automate agriculture precision using various sensors. These sensors are deployed in the agricultural environment to improve production yields through intelligent farming decisions and obtain information regarding crops, plants, temperature measurement, humidity, and irrigation systems. However, sensors have limited resources concerning processing, energy, transmitting, and memory capabilities that can negatively impact agriculture production. Besides efficiency, the protection and security of these IoT based agricultural sensors are also important from malicious adversaries. In this article, we proposed an IoT based WSN framework as an application to smart agriculture comprising different design levels. Firstly, agricultural sensors capture relevant data and determine a set of cluster heads based on multi criteria decision function. Additionally, the strength of the signals on the transmission links is measured while using signal to noise ratio (SNR) to achieve consistent and efficient data transmissions. Secondly, security is provided for data transmission from agricultural sensors towards base stations (BS) while using the recurrence of the linear congruential generator. The simulated results proved that the proposed framework significantly enhanced the communication performance as an average of 13.5% in the network throughput, 38.5% in the packets drop ratio, 13.5% in the network latency, 16% in the energy consumption, and 26% in the routing overheads for smart agriculture, as compared to other solutions.", "corpus_id": 215725807, "venue": "Sensors", "year": 2020, "author_names": [ "Khalid Haseeb", "Ikram Ud Din", "Ahmad S Almogren", "Naveed Islam" ], "n_citations": 36, "n_key_citations": 0, "score": 1 }, { "doc_id": "68026218", "title": "An automated low cost IoT based Fertilizer Intimation System for smart agriculture", "abstract": "Abstract This paper presents an Internet of Things (IoT) based system by designing a novel Nitrogen Phosphorus Potassium (NPK) sensor with Light Dependent Resistor (LDR) and Light Emitting Diodes (LED) The principle of colorimetric is used to monitor and analyze the nutrients present in the soil. The data sensed by the designed NPK sensor from the selected agricultural fields are sent to Google cloud database to support fast retrieval of data. The concept of fuzzy logic is applied to detect the deficiency of nutrients from the sensed data. The crisp value of each sensed data is discriminated into five fuzzy values namely very low, low, medium, high and very high during fuzzification. A set of If then rules are framed based on individual chemical solutions of Nitrogen (N) Phosphorous (P) and Potassium (K) Mamdani inference procedure is used to derive the conclusion about the deficiency of N, P and K available in soil chosen for testing and accordingly an alert message is sent to the farmer about the quantity of fertilizer to be used at regular intervals. The proposed hardware prototype and the software embedded in the microcontroller are developed in Raspberry pi 3 using Python. The developed model is tested in three different soil samples like red soil, mountain soil and desert soil. It is observed that the developed system results in linear variation with respect to the concentration of the soil solution. A sensor network scenario is created using Qualnet simulator to analyze the performance of designed NPK sensor in terms of throughput, end to end delay and jitter. From the different variety of experiments conducted, it is noticed that the developed IoT system is found to be helpful to the farmers for high yielding of crops.", "corpus_id": 68026218, "venue": "Sustain. Comput. Informatics Syst.", "year": 2020, "author_names": [ "G Lavanya", "C Rani", "P Ganeshkumar" ], "n_citations": 23, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "229936051", "title": "Competition, Change, and Coordination and Collaboration: Tracing News Executives' Perceptions About Participation in Media Innovation", "abstract": "ABSTRACT Technological disruptions and increasing competition in the digital mediascape have fundamentally altered the market conditions for news media companies, raising corresponding concerns about the future of journalism. News media firms can adapt their business models by more purposefully focusing on media innovation, or the development and implementation of new processes, products or services. Specifically, this article focuses on innovation centric coordination and collaboration namely, coordination of knowledge and innovation activities among social actors in news media organizations. In doing so, this article builds on the knowledge based view (KBV) of the firm and its core argument that coordination of knowledge is essential for organizational innovation. It presents findings from a series of cross sectional surveys with newspaper executives carried out bi annually from 2011 to 2017, examining executives' perceptions of collaborative potential for digital media innovation at the intersection of editorial, business, and information technology (IT) departments. The findings suggest that there has been a significant increase in perceived collaboration more recently, and that the IT department is perceived to have become more important to innovation over time.", "corpus_id": 229936051, "venue": "", "year": 2020, "author_names": [ "Oscar Westlund", "Arne H Krumsvik", "Seth C Lewis" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "216225842", "title": "Media Innovation and Social Change: Introduction to the Special Issue", "abstract": "Our purpose with this Special Issue is to present and contribute to a body of research that critically explores the relationship between media innovation and social change. In doing so, we also outline the contours of a research agenda to further develop this emerging field. Our motivation arises from a review of research published in the nine previous editions of this journal, where we explored how research about media innovations engaged with the topic of social change. We find that research in the field of media innovations has tended to focus on business and economic imperatives for media innovation, following the paradigm of research on digitalisation introduced by von Hippel's theories of 'democratizing innovation' (2005) Chesbrough's 'open innovation' (2006) or Tapscott and Williams, 'Wikinomics' (2011) As a consequence, digitalisation and the introduction of new technologies is usually unquestioningly presented as a business imperative for media industry stakeholders.", "corpus_id": 216225842, "venue": "", "year": 2020, "author_names": [ "Niahmh Ni Bhroin", "Stefania Milan" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "146030920", "title": "Interactive learning media innovation: utilization of augmented reality and pop up book to improve user's learning autonomy", "abstract": "This study discusses the design of innovative learning media based on Augmented Reality (AR) and its development for students of Higher Education. Innovative Learning Media is now an important part of improving the quality of learning. Utilization of mobile device technologies such as android tablets and smartphones with camera features to run AR technology is the main point. Several students and expert of learning media were involved in this research and development. Questionnaires are used as measuring instruments. The results of this study are AR based interactive learning media to improve user's learning autonomy and recommendations for further development.", "corpus_id": 146030920, "venue": "Journal of Physics: Conference Series", "year": 2019, "author_names": [ "Hakkun Elmunsyah", "Wahyu Hidayat", "Khoirudin Asfani" ], "n_citations": 15, "n_key_citations": 1, "score": 1 }, { "doc_id": "147021014", "title": "Developing an Index of Media Innovation in a National Market", "abstract": "From a global vision of journalism innovation, this article presents a matrix that analyses and measures an innovation index of market specific media initiatives, providing a valuable tool for comparative analysis. A method has been designed that consists of (1) sample collection and selection, and (2) the quantitative and qualitative analysis of each innovation identified in the cases studied. With the aim of generating an Index of Media Innovation, 25 of the most innovative cases within the field of reference in Spain were studied during the period 2013 2014 through a database consisting of 196 innovations that were analysed as a function of area, degree and technological basis. The results indicate that, in Spain, journalism innovation occurs at the margins of the traditional news industry and, for the most part, innovation is expanding among digital native media outlets, niche initiatives and start ups.", "corpus_id": 147021014, "venue": "", "year": 2018, "author_names": [ "Jose A Garcia-Aviles", "Miguel Carvajal-Prieto", "Alicia De Lara-Gonzalez", "Felix Arias-Robles" ], "n_citations": 23, "n_key_citations": 3, "score": 0 }, { "doc_id": "186917891", "title": "Media Innovation Meets the Marketplace", "abstract": "Abstract This chapter examines the marketplace context for media innovations. This includes factors that have been well researched and about which much is known, for example, pricing and early adopters, as well as marketplace elements and patterns that are not so thoroughly understood but are nonetheless very important in understanding the process of adoption, for example, the role of serendipity. It reviews patterns of adoption that were prevalent in the twentienth century but which have changed in the twenty first century, for example, how word of mouth has been transformed by social media. Declines and failures as well as successes along with the international scope of media innovations, including in developing countries, are accessed. The advantages and disadvantages of large and small companies creating media innovations are reviewed as are the respective roles of content creation and distribution. The concluding discussion section describes the contexts for media innovations today, including concerns about their privacy, use of media in public places, filters for new media innovations to identify likely successes, and the importance of teams in developing media innovations.", "corpus_id": 186917891, "venue": "", "year": 2019, "author_names": [ "John Carey" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "169366787", "title": "Media: Innovation, Self production, Creativity", "abstract": "", "corpus_id": 169366787, "venue": "", "year": 2019, "author_names": [ "Jean Paul Simon" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "8085165", "title": "Twitter's diffusion in sports journalism: Role models, laggards and followers of the social media innovation", "abstract": "The roles of sports journalists have been affected considerably by the influence of Twitter, but what is not known is how the social media application has been adopted across a range of sports newsrooms in different countries. Employing Rogers' diffusion of innovations theory, this study examines how Twitter has been accepted or rejected on the sports desks of six broadsheet/quality news organisations in Australia, India and the United Kingdom. A mixed methods approach is employed, combining 36 in depth interviews with a content analysis of 4103 print and online articles. This allows a comprehensive analysis of issues such as when and why sports journalists adopt this innovation, and how much Twitter related content appears in the sports pages. Twitter adoption contains many benefits for individuals and their organisations, and the results from this study have implications for sports journalism in other nations at various stages of diffusion.", "corpus_id": 8085165, "venue": "New Media Soc.", "year": 2016, "author_names": [ "Peter English" ], "n_citations": 43, "n_key_citations": 6, "score": 1 }, { "doc_id": "114891159", "title": "Ambidextrous Tensions Dynamics of Creative Work in the Media Innovation Process", "abstract": "This article analyses creative work in one of Europe's largest media organizations, in which a newly formed development team was tasked with creating a new multi platform media product. The objective of this article is to explore the dynamics of team creativity in the process of developing and managing media content innovation. To do this, this study utilizes the concept of ambidexterity for understanding multi level tensions between the on going media production work and innovation processes typically co existing in media operations. The results of the analysis indicate that, due to pressures created by the routine media production, media innovations require specific focus and prioritization to succeed. This requires recognizing, balancing and managing the ambidextrous tensions between exploration and exploitation in creative media work. In addition to practical implications for management of media innovations, this study contributes to research on media innovations, particularly from the perspectives of creative work and organizational creativity.", "corpus_id": 114891159, "venue": "", "year": 2017, "author_names": [ "Sari Virta", "Nando Malmelin" ], "n_citations": 12, "n_key_citations": 0, "score": 0 }, { "doc_id": "148764909", "title": "The role of frames and cultural toolkits in establishing new connections for social media innovation", "abstract": "Abstract It has been suggested that social media foster innovative outcomes by facilitating communication with a vast network of new connections. In this paper we argue that forming new social connections on social media is a crucial first step in the innovation process that is not straightforward to achieve. We report on the findings of a qualitative study of 31 owner managers in the UK who were attempting to make new connections in order to inspire innovation in their firms. The findings suggest that a lack of available social cues on social media creates a sense of uncertainty that can stifle the innovation process. In our case, the respondents addressed these difficulties by using frames as proxies for missing social stimuli. We argue that such framings guide the selection of well established cultural tools needed to turn mental maps into action. A key implication of our findings is that social media is not necessarily an equitable space for innovation since the process still relies upon established networks and styles of behaviour, which are not readily accessible to all.", "corpus_id": 148764909, "venue": "Technological Forecasting and Social Change", "year": 2019, "author_names": [ "Michelle Richey", "M N Ravishankar" ], "n_citations": 8, "n_key_citations": 0, "score": 0 }, { "doc_id": "145138359", "title": "From TV Personality to Fans and Beyond: Indexical Bleaching and the Diffusion of a Media Innovation", "abstract": "This article focuses on the role of indexical social meaning in the adoption, circulation, and diffusion of a mass media innovation. The analysis is a case study of the phrase \"lady pond,\" a euphemism for women as objects of desire. The phrase's use was popularized by a television personality on the cable network Bravo and has spread beyond those who demonstrate recognition of its media origins. Through a detailed analysis of the phrase in use on Twitter, I investigate the properties of the phrase as it \"travels\" from Bravo to Bravo fans and beyond. I show that the phrase is used with the same form and meaning as on Bravo, and it is semantically and stylistically integrated into users' repertoires. However, it loses its indexical links to Bravo through \"indexical bleaching,\" which I argue is an outcome of the phrase's recontextualized circulation and a facilitator of its further diffusion.", "corpus_id": 145138359, "venue": "", "year": 2014, "author_names": [ "Lauren M Squires" ], "n_citations": 26, "n_key_citations": 1, "score": 0 } ]

[ { "doc_id": "109938578", "title": "Security Applications of Static Program Analysis", "abstract": "Author(s) Belleville, Brian Advisor(s) Franz, Michael Abstract: Static program analysis computes information about a program without executing the program. This can be used to improve software security by determining a security policy based on the program's semantics, which is then used to implement a run time protection, or by detecting bugs in the program, which can then be fixed before they are subject to an attack. We present applications of static program analysis to address software exploits that utilize memory corruption.Memory corruption exploits are one of the most severe forms of program attacks, and occur when an attacker performs invalid memory accesses to hijack a program. This can involve overwriting data to force the program to perform malicious actions, as well as reading sensitive data to leak secrets.One approach that has been proposed to stop memory corruption attacks is data space randomization (DSR) DSR utilizes static analysis to classify program variables into a set of equivalence classes, and then encrypts variables with a randomly chosen key for each equivalence class. This thwarts memory corruption attacks that introduce illegitimate data flows. However, existing implementations of DSR trade analysis precision for better run time performance, which leaves attackers sufficient leeway to mount attacks. In this dissertation we present context sensitive data space randomization, a more precise version of DSR that is able to distinguish a larger number of equivalence classes by using a context sensitive points to analysis to construct equivalence classes. We then adapt this analysis and protection to HARD, which shows that context sensitive DSR can target specialized hardware to provide precise protection with good run time performance.We also explored using static analysis to find security critical bugs. Specifically, we developed KALD, a static analysis tool which uses points to analysis to detect direct address disclosures that can lead to kernel ASLR bypasses. We show that KALD successfully detects several previously unknown direct disclosure vulnerabilities in the Linux kernel.", "corpus_id": 109938578, "venue": "", "year": 2018, "author_names": [ "Brian Belleville" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "6201696", "title": "Android Security via Static Program Analysis", "abstract": "Android is a popular platform designed for mobile devices. It consists of a customized Linux kernel, middleware, and a few core applications such as the Phone application. The middleware, commonly referred to as the Android framework, provides libraries and runtime services to applications. Applications in Android are written mainly in Java. Once compiled, Android transforms its applications into the Dalvik Executable (or DEX) format to minimize the memory footprint. Android uses a Java VM called Dalvik to execute DEX bytecode. Unlike other mobile OSes, Android has a unique permission mechanism. At development time, an application developer needs to explicitly request permissions by including them in an application configuration file. We refer to this configuration file simply as the manifest invthe remainder of the paper. At installation time, each uservneeds to review the permissions that the application requestsvand explicitly grant them.", "corpus_id": 6201696, "venue": "MobiSys PhDForum", "year": 2017, "author_names": [ "Feng Shen" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "189818748", "title": "Bouncer: Static Program Analysis in Hardware", "abstract": "When discussing safety and security for embedded systems, we typically divide the world into software checks (which are either static or dynamic) or hardware checks (which are dynamic) As others have pointed out, hardware checks offer more than just efficiency. They are intrinsic to the device's functionality and thus are live from power up; they require little to no dependency on other software functioning correctly, and due to the fact they are wired directly into the operation of the system, are difficult or impossible to bypass. We explore an experimental new embedded system that uses special purpose hardware for static analysis that prevents all program binaries with memory errors, invalid control flow, and several other undesirable properties from ever being loaded onto the device. Static analysis often requires whole binary level, rather than instruction level, examination. We show that a carefully constructed hardware state machine, using available scratch pad memory, is capable of efficiently checking functional binaries in a streaming and verifiably non bypassable way directly in hardware as they are loaded into the embedded program store. The resulting system is surprisingly small (taking no more than .0079 mm2) efficient (capable of checking binaries at an average throughput of around 60 cycles per instruction) and yet guarantees execution free from many of the fragile behaviors that result in security and safety concerns. We believe this is the first time any static analysis has been implemented at the hardware level and opens the door to more complex hardware checked properties.", "corpus_id": 189818748, "venue": "2019 ACM/IEEE 46th Annual International Symposium on Computer Architecture (ISCA)", "year": 2019, "author_names": [ "Joseph McMahan", "Michael Christensen", "Kyle Dewey", "Ben Hardekopf", "Timothy Sherwood" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "21783131", "title": "Static Program Analysis as a Fuzzing Aid", "abstract": "Fuzz testing is an effective and scalable technique to perform software security assessments. Yet, contemporary fuzzers fall short of thoroughly testing applications with a high degree of control flow diversity, such as firewalls and network packet analyzers. In this paper, we demonstrate how static program analysis can guide fuzzing by augmenting existing program models maintained by the fuzzer. Based on the insight that code patterns reflect the data format of inputs processed by a program, we automatically construct an input dictionary by statically analyzing program control and data flow. Our analysis is performed before fuzzing commences, and the input dictionary is supplied to an off the shelf fuzzer to influence input generation. Evaluations show that our technique not only increases test coverage by 10 15% over baseline fuzzers such as afl but also reduces the time required to expose vulnerabilities by up to an order of magnitude. As a case study, we have evaluated our approach on two classes of network applications: nDPI, a deep packet inspection library, and tcpdump, a network packet analyzer. Using our approach, we have uncovered 15 zero day vulnerabilities in the evaluated software that were not found by stand alone fuzzers. Our work not only provides a practical method to conduct security evaluations more effectively but also demonstrates that the synergy between program analysis and testing can be exploited for a better outcome.", "corpus_id": 21783131, "venue": "RAID", "year": 2017, "author_names": [ "Bhargava Shastry", "Markus Leutner", "Tobias Fiebig", "Kashyap Thimmaraju", "Fabian Yamaguchi", "Konrad Rieck", "Stefan Schmid", "Jean-Pierre Seifert", "Anja Feldmann" ], "n_citations": 26, "n_key_citations": 0, "score": 0 }, { "doc_id": "11148080", "title": "SPARK: Static Program Analysis Reasoning and Retrieving Knowledge", "abstract": "Program analysis is a technique to reason about programs without executing them, and it has various applications in compilers, integrated development environments, and security. In this work, we present a machine learning pipeline that induces a security analyzer for programs by example. The security analyzer determines whether a program is either secure or insecure based on symbolic rules that were deduced by our machine learning pipeline. The machine pipeline is two staged consisting of a Recurrent Neural Networks (RNN) and an Extractor that converts an RNN to symbolic rules. To evaluate the quality of the learned symbolic rules, we propose a sampling based similarity measurement between two infinite regular languages. We conduct a case study using real world data. In this work, we discuss the limitations of existing techniques and possible improvements in the future. The results show that with sufficient training data and a fair distribution of program paths it is feasible to deducing symbolic security rules for the OpenJDK library with millions lines of code.", "corpus_id": 11148080, "venue": "ArXiv", "year": 2017, "author_names": [ "Wasuwee Sodsong", "Bernhard Scholz", "Sanjay Chawla" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "13462159", "title": "Program Analysis of Cryptographic Implementations for Security", "abstract": "Cryptographic implementation errors in popular open source libraries (e.g. OpenSSL, GnuTLS, BotanTLS, etc. and the misuses of cryptographic primitives (e.g. as in Juniper Network) have been the major source of vulnerabilities in the wild. These serious problems prompt the need for new compile time security checking. Such security enforcements demand the study of various cryptographic properties and their mapping into enforceable program analysis rules. We refer to this new security approach as cryptographic program analysis (CPA) In this paper, we show how cryptographic program analysis can be performed effectively andits security applications. Specifically, we systematically investigate different threat categories on various cryptographicimplementations and their usages. Then, we derive varioussecurity rules, which are enforceable by program analysistools during code compilation. We also demonstrate the capabilities of static taint analysis to enforce most of these security rules and provide a prototype implementation. We point out promising future research and development directions in this new area of cryptographic program analysis.", "corpus_id": 13462159, "venue": "2017 IEEE Cybersecurity Development (SecDev)", "year": 2017, "author_names": [ "Sazzadur Rahaman", "Danfeng Daphne Yao" ], "n_citations": 18, "n_key_citations": 3, "score": 0 }, { "doc_id": "25085866", "title": "When program analysis meets mobile security: an industrial study of misusing Android internet sockets", "abstract": "Despite recent progress in program analysis techniques to identify vulnerabilities in Android apps, significant challenges still remain for applying these techniques to large scale industrial environments. Modern software security providers, such as Qihoo 360 and Pwnzen (two leading companies in China) are often required to process more than 10 million mobile apps at each run. In this work, we focus on effectively and efficiently identifying vulnerable usage of Internet sockets in an industrial setting. To achieve this goal, we propose a practical hybrid approach that enables lightweight yet precise detection in the industrial setting. In particular, we integrate the process of categorizing potential vulnerable apps with analysis techniques, to reduce the inevitable human inspection effort. We categorize potential vulnerable apps based on characteristics of vulnerability signatures, to reduce the burden on static analysis. We flexibly integrate static and dynamic analyses for apps in each identified family, to refine the family signatures and hence target on precise detection. We implement our approach in a practical system and deploy the system on the Pwnzen platform. By using the system, we identify and report potential vulnerabilities of 24 vulnerable apps (falling into 3 vulnerability families) to their developers, and some of these reported vulnerabilities are previously unknown. The apps of each vulnerability family in total have over 50 million downloads. We also propose countermeasures and highlight promising directions for technology transfer.", "corpus_id": 25085866, "venue": "ESEC/SIGSOFT FSE", "year": 2017, "author_names": [ "Wenqi Bu", "Minhui Xue", "Lihua Xu", "Yajin Zhou", "Zhushou Tang", "Tao Xie" ], "n_citations": 6, "n_key_citations": 0, "score": 0 }, { "doc_id": "11068702", "title": "An approach for identifying JavaScript loaded advertisements through static program analysis", "abstract": "Motivated by reasons related to privacy, obtrusiveness, and security, there is great interest in the prospect of blocking advertisements. Current approaches to this goal involve keeping sets of URL based regular expressions, which are matched against every URL fetched on a web page. While generally effective, this approach is not scalable and requires constant manual maintenance of the filtering lists. To counter these shortcomings, we present a fundamentally different approach with which we demonstrate that static program analysis on JavaScript source code can be used to identify JavaScript that loads and displays ads. Our use of static analysis lets us flag and block ad related scripts before runtime, offering security in addition to blocking ads. Preliminary results from a classifier trained on the features we develop achieve 98% accuracy in identifying ad related scripts.", "corpus_id": 11068702, "venue": "WPES '12", "year": 2012, "author_names": [ "Caitlin R Orr", "Arun Avinash Chauhan", "Minaxi Gupta", "Chris Frisz", "Christopher W Dunn" ], "n_citations": 15, "n_key_citations": 2, "score": 0 }, { "doc_id": "13431064", "title": "Static program analysis assisted dynamic taint tracking for software vulnerability discovery", "abstract": "The evolution of computer science has exposed us to the growing gravity of security problems and threats. Dynamic taint analysis is a prevalent approach to protect a program from malicious behaviors, but fails to provide any information about the code which is not executed. This paper describes a novel approach to overcome the limitation of traditional dynamic taint analysis by integrating static analysis into the system and presents framework SDCF to detect software vulnerabilities with high code coverage. Our experiments show that SDCF is not only able to provide efficient runtime protection by introducing an overhead of 4.16x based on the taint tracing technique, but is also capable of discovering latent software vulnerabilities which have not been exploited, and achieve code coverage of more than 90%", "corpus_id": 13431064, "venue": "Comput. Math. Appl.", "year": 2012, "author_names": [ "Ruoyu Zhang", "Shiqiu Huang", "Zhengwei Qi", "Haibing Guan" ], "n_citations": 17, "n_key_citations": 0, "score": 0 }, { "doc_id": "218872258", "title": "DepTaint: A Static Taint Analysis Method Based on Program Dependence", "abstract": "Since static taint analysis is performed prior to execution by considering all possible execution paths, it can discover potential security issues before the program running. Currently, many taint analysis tools pay more attention to data dependence in the program. Whereas implicit flow analysis based on control dependence is generally not considered owning to its complexity. Therefore, this paper presents a static taint analysis method named DepTaint, which expands the static checkers of LLVM, focuses on program dependence including data and control dependence in the program. DepTaint analyzes the taint variables propagated along explicit flows and implicit flows, especially commendably handles the under taint in explicit flow analysis. Our evaluations demonstrate that, for 8 programs containing data and control dependence and 8 programs injected different common vulnerabilities (i.e. array bounds, double free, format string vulnerability, heap overflow, integer overflow, stack overflow, and UAF) DepTaint significantly outperforms LLVM's static checker both at marking taint variables and achieving more finegrained taint propagation paths. Specially, for the programs containing branch selection and loop structure, DepTaint on average marks 2X and 3.6X taint variables than LLVM's static checker.", "corpus_id": 218872258, "venue": "ICMSS", "year": 2020, "author_names": [ "Binbin Li", "Xiajing Wang" ], "n_citations": 1, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "181507734", "title": "Application Technology and Development Trend of Construction Machinery Automation", "abstract": "In recent years, with the continuous improvement of science and technology and rapid economic development, people's quality of life and material production and the level of material and cultural needs are increasingly diverse. In such a demand and technical support, construction machinery automation should be born. In modern life, computer technology has penetrated into all aspects of our daily lives. How to make better use of construction machinery automation and promote the construction machinery automation to a stronger direction needs to face and solve the problem. In order to promote the application of building automation and promote the development of China's construction machinery automation, this paper focuses on the construction machinery automation research and analysis, from the status, characteristics, key technology, application of construction machinery automation in China construction industry and the significance of automation technology and other angles to analyse the future development trend of China's construction machinery automation.", "corpus_id": 181507734, "venue": "", "year": 2018, "author_names": [ "Wen-zheng Zhu" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "202049434", "title": "Research Status and Development Trend of Durability of Concrete Structural Material", "abstract": "The durability of concrete structural material is a very complicated engineering problem,it will not only influence service life of structure,but also influence economic benefits of the whole society.In this paper,the present research situation of durability of construction structure is introduced firstly.Besides,influencing factors,research method and definition of durability of construction structure are introduced in detail.In addition,the life forecast method of concrete structural material is emphasized.Finally,some problems that need to be further studied in durability of concrete structure is proposed.", "corpus_id": 202049434, "venue": "", "year": 2011, "author_names": [ "Wang Hai-long" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "204284807", "title": "Research status and development trend of flame retardant asphalt at home and abroad", "abstract": "As a kind of excellent road bonding material,asphalt has been widely used in highway construction for many years.But asphalt is highly flammable and gives out a lot of smoke while burning.Its hazards cannot be ignored.To get safe application in the tunnel pavement engineering,we need flame retardant treatment on asphalt.The current research status of flame retardant asphalt at home and abroad was introduced and flame retardant mechanism of the flame retardant asphalt and the general application situation of the flame retardant agent and additives were introduced respectively.The testing methods of flame retardant performance and existing problems of them were described,and the future development trend of flame retardant asphalt was discussed which are no halogenated and low smoking with low toxicity and water resistance.Considering the use of asphalt on road,the flame retardant agents should be rich in source with low cost and good thermal stability.Preparation technology of the flame retardant asphalt should be simple and the flame retardant agents should not seriously influence the asphalt and its mixture performances.", "corpus_id": 204284807, "venue": "", "year": 2012, "author_names": [ "Zhang Liqun" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "111678691", "title": "The current research status and development trend of finger jointed technology in China", "abstract": "The implication of the finger jointed technology,the process technology of finger jointed lumber and bamboo and the current research status of process technology of finger jointed lumber are introduced in this paper.The prospects is predicted.Through the analysis of the new construction material,the finger jointed lumber optimum processing parameters,finger jointed lumber mechanical test index and the new type of adhesive,the future development trends of finger jointed lumber are discussed.", "corpus_id": 111678691, "venue": "", "year": 2012, "author_names": [ "Zhou Jian-bo" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "130018742", "title": "Status and Trend of the Swine Biogas Supply Chain in Poyang Lake Ecological Economic Zone", "abstract": "Based on the status of swine biogas supply chain in Poyang Lake Ecological Economic Zone, two different supply chain mode were established which are household biogas and intensive swine biogas in the paper. Each node of two supply chain was offered. After processing the data from statistics, documentary investigation and visiting on the spot, the trend of it was analyzed by quantitative methods which the results showed that the transform from the household to joint household and livestock production biogas engineering is inevitable due to the change of pig culture structure. Then the paper described that the swine biogas supply chain in Poyang Lake Ecological Economic Zone would be promoted by the diversification of raw material, high value use of biogas and by products, construction of service systems, clean development mechanism and distributed energy.", "corpus_id": 130018742, "venue": "", "year": 2013, "author_names": [ "Min Fan", "Xiaoqing Gan", "Jian-hui Guo" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "140061048", "title": "Status and Prospects of Development of Production of Glassy Foamed Heat Insulation Materials", "abstract": "The advantages and disadvantages of heat insulation materials offered on the construction market in the Commonwealth of Independent States are presented. It is noted that on the basis of all characteristics taken together foam glass surpasses well known heat insulation, but it is expensive because the production is energy intensive, which makes it uncompetitive. Anew, promising trend is examined low temperature synthesis of glass foamed heat insulating materials based on production wastes from the processing of phosphate ores. The technological process developed yields foamed material with high technical and performance properties and is characterized by absence of energy intensive stages. The foaming temperature equals 250 300degC.", "corpus_id": 140061048, "venue": "Glass and Ceramics", "year": 2017, "author_names": [ "I M Tereshchenko", "O B Dormeshkin", "A P Kravchuk", "B P Zhikh" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "59137993", "title": "Application Status and Trends of Bolting Shotcreting Mesh Supporting Technology in Underground Engineering and Its Application in Ivory Coast", "abstract": "Many gold mines deposits have been discovered recently in Ivory Coast. The current government tries all the possible ways to develop the mining sector. However, the artisanal gold mine leads the operation in all the major parts of the country. The bolting shotcreting mesh supporting technology, which serves as an anchorage technology, has mainly been a part of traditional civil engineering. In case we refer to the historical development of the bolting shotcreting mesh supporting technology in geotechnical engineering, some of its application status aspects include standard construction, design, anchoring material and construction technology. For this reason, this paper focuses on the problems of the anchorage technology and how the development trend of the anchorage technology can be useful in Ivory Coast gold's mining industry.", "corpus_id": 59137993, "venue": "", "year": 2017, "author_names": [ "Kouame Joseph Arthur Kouame", "Fuxing Jiang", "Yu Feng", "Sitao Zhu" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "55331874", "title": "On the Revolution and Trend of Modern Men's Wear", "abstract": "Costumes are the special fruit of the human, which is the crystal of human material civilization and embodied the connotation of spiritual civilization. Fashion clothes are a surface decoration which is usually considered to be the masks used to cover up the bodies or the facts. The way of wearing can be considered as a construction or a positive process and technology method to show up what they need and want. Modern men are not content with the merely warming and comfortability of the clothes, and begin to pursuit the creation and fashion. The conclusion can be drawn from the fashion show. With the development of the social, men's wearing will have huge space. Men's wearing is not only limited to the official clothes for showing. The men's wearing is changing, developing and progressing. The men's wearing does not only stand for the power and the status, but also the ability of consuming and the strength to choose in development. The popularity of men's wearing shows the balance structure and social phenomenon. The clothes, as a special production of the society, are appearing according to the development of the society. The clothes are a symbol and a sign. It stands for the political and social status, let everybody behave properly and abide by the social rule. Therefore, the Emperors had their special clothes since ancient times and created the clothes rule. To some extent, the political order was built according to the development of the clothes. So, clothes is a part of politics, and the importance of clothes far exceeds the status of clothes in the society. Costumes are the special products of human, which was the crystal of human material civilization and embodied the connotation of spiritual civilization. The human society had evolved from the obscuration to the civilization for hundreds of thousands of years. From the beginning of the clothes, living customs, aesthetic interest, color hobby, cultural mentality and religion idea are all embodied in clothes to build the spiritual civilization connotation of the clothes culture. Today, clothes are not only used to keep warm or comfort, but also pursuit the technology measures to embody the relationship between the body and the living environment and the space between the body and the body activities. In other words, the clothes reflect the personal habituation. The habituation also brings expectation, rule and technology. As it is known, there are all necessary living conditions under the concert environment to the human. From this aspect, the body is built through two meaning. One is built by the technology; another is built through the habit manifestation mode to show the concert livings. The technology of body fashion is an obvious way of culture introduction. People usually show themselves to the society through the decoration to the body, show their behavior rule through the fashion and bring a new visage for them which does not cover natural body or real characteristic but built personality positively. 21 st century is a century with the creation; people have had new cognitions to the creation and the", "corpus_id": 55331874, "venue": "", "year": 2016, "author_names": [ "Yin Ding" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "132861852", "title": "The development trend of urban construction in the new century", "abstract": "In light of high speed development circumstances of social economy in 21st century,this paper analyzes the development trend of urban construction in the new century from the angle of sustainable development combined with the status of land resource,urban construction and increment speed of urban population in the future in our country,and points out that strengthening the researches on new type structural form and building material is the important measure to fulfill urban construction in the new century.", "corpus_id": 132861852, "venue": "", "year": 2007, "author_names": [ "Liu Li-me" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "63089349", "title": "Trend in medical information retrieval teaching material construction", "abstract": "Medical information retrieval teaching material would be constructed with the training of information literature as its core and optimization of its contents according to the development in medical sciences,and three dimensional teaching materials should be developed according to an analysis of the status quo and trend in medical information retrieval teaching material construction.Medical information retrieval course in combination with other courses,such as medical informatics course and evidence based medicine course,would play a greater role in hospital informationization and evidence based medicine.", "corpus_id": 63089349, "venue": "", "year": 2010, "author_names": [ "Sun Yan" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "67859607", "title": "Predicting inadequate postoperative pain management in depressed patients: A machine learning approach", "abstract": "Widely prescribed prodrug opioids (e.g. hydrocodone) require conversion by liver enzyme CYP 2D6 to exert their analgesic effects. The most commonly prescribed antidepressant, selective serotonin reuptake inhibitors (SSRIs) inhibits CYP 2D6 activity and therefore may reduce the effectiveness of prodrug opioids. We used a machine learning approach to identify patients prescribed a combination of SSRIs and prodrug opioids postoperatively and to examine the effect of this combination on postoperative pain control. Using EHR data from an academic medical center, we identified patients receiving surgery over a 9 year period. We developed and validated natural language processing (NLP) algorithms to extract depression related information (diagnosis, SSRI use, symptoms) from structured and unstructured data elements. The primary outcome was the difference between preoperative pain score and postoperative pain at discharge, 3 week and 8 week time points. We developed computational models to predict the increase or decrease in the postoperative pain across the 3 time points by using the patient's EHR data (e.g. medications, vitals, demographics) captured before surgery. We evaluate the generalizability of the model using 10 fold cross validation method where the holdout test method is repeated 10 times and mean area under the curve (AUC) is considered as evaluation metrics for the prediction performance. We identified 4,306 surgical patients with symptoms of depression. A total of 14.1% were prescribed both an SSRI and a prodrug opioid, 29.4% were prescribed an SSRI and a non prodrug opioid, 18.6% were prescribed a prodrug opioid but were not on SSRIs, and 37.5% were prescribed a non prodrug opioid but were not on SSRIs. Our NLP algorithm identified depression with a F1 score of 0.95 against manual annotation of 300 randomly sampled clinical notes. On average, patients receiving prodrug opioids had lower average pain scores (p<0.05) with the exception of the SSRI+ group at 3 weeks postoperative follow up. However, SSRI+/Prodrug+ had significantly worse pain control at discharge, 3 and 8 week follow up (p .01) compared to SSRI+/Prodrug patients, whereas there was no difference in pain control among the SSRI patients by prodrug opioid (p>0.05) The machine learning algorithm accurately predicted the increase or decrease of the discharge, 3 week and 8 week follow up pain scores when compared to the pre operative pain score using 10 fold cross validation (mean area under the receiver operating characteristic curve 0.87, 0.81, and 0.69, respectively) Preoperative pain, surgery type, and opioid tolerance were the strongest predictors of postoperative pain control. We provide the first direct clinical evidence that the known ability of SSRIs to inhibit prodrug opioid effectiveness is associated with worse pain control among depressed patients. Current prescribing patterns indicate that prescribers may not account for this interaction when choosing an opioid. The study results imply that prescribers might instead choose direct acting opioids (e.g. oxycodone or morphine) in depressed patients on SSRIs.", "corpus_id": 67859607, "venue": "PloS one", "year": 2019, "author_names": [ "Arjun Parthipan", "Imon Banerjee", "Keith Humphreys", "Steven M Asch", "Catherine M Curtin", "Ian Carroll", "Tina Hernandez-Boussard" ], "n_citations": 17, "n_key_citations": 1, "score": 1 }, { "doc_id": "53169463", "title": "Psychological approach to pain management with the methods of NLP (Neurolinguisitic programming)", "abstract": "PSYCHOLOGICAL APPROACH TO PAIN MANAGEMENT WITH THE METHODS I 1 OF NLP (NElJROLINGUI?TIC PROGRAMMING) C. Besser Siegmund* H. Siegmund* A. Hovestadt* Psychologische Praxis, Jakobikirchhof 9, O 2000 Hamburg 1 Aim of Investigation: changing psychic experience of pain especially when it is chronic or psychosomatic pain or when medical pain treatment is not effective or not possible (for example: thalamic pain) Methods: Developing the experience of the desired state with all the sensory specific datas: with this state connected internal pictures, sounds, feelings and taste/smell. Developing an individual pain management strategy that fits to the desired outcome and matches the resources and abilities of the patient. Reframing the experience of the pain. Results: We present 10 case studies concerning: psychosomatic pain chronic pain of organic origin Number of sessions: up to 25 sessions 30 minutes each The psychic effects of the pain in the patient's life decreases, the pain isn't so important any longer or vanishes. Detailed susoestions for further scientific researches can be aiven. Conclusions: To the members of the \"Schmerztherapeutisches Kolloquium Hamburg\" and the \"Arbeitskreis fiir psychologische Schmerzbehandlung Hamburg\" the effects of this method seem to be significant enough to make controled use of these therapeutic instruments.", "corpus_id": 53169463, "venue": "PAIN", "year": 1987, "author_names": [ "Cora Besser-Siegmund", "Harry Siegmund", "Ad Hovestadt" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "221351867", "title": "NLP and Relief of Chronic Pain", "abstract": "Being both health professionals and NLP Practitioners has had its advantages for the two of us writing this article (Libu_ka is a Physiotherapist and Richard is a Nurse) Each of us has been able to apply a combination of NLP and standard medical treatments to the management of clients with chronic (long term) pain. However, as the case studies we explore here will show, an NLP Practitioner with no previous medical knowledge can achieve seemingly miraculous results in pain relief.", "corpus_id": 221351867, "venue": "", "year": 2011, "author_names": [], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "221367298", "title": "Identifying Goals of Care Conversations in the Electronic Health Record, Using Natural Language Processing and Machine Learning.", "abstract": "CONTEXT Goals of care discussions are an important quality metric in palliative care. However, goals of care discussions are often documented as free text in diverse locations. It is difficult to identify these discussions in the electronic health record (EHR) efficiently. OBJECTIVES To develop, train, and test an automated approach to identifying goals of care discussions in the EHR, using natural language processing (NLP) and machine learning (ML) METHODS From the electronic health records of an academic health system, we collected a purposive sample of 3,183 EHR notes (1,435 inpatient notes and 1,748 outpatient notes) from 1,426 patients with serious illness over 2008 2016, and manually reviewed each note for documentation of goals of care discussions. Separately, we developed a program to identify notes containing documentation of goals of care discussions using NLP and supervised ML. We estimated the performance characteristics of the NLP/ML program across 100 pairs of randomly partitioned training and test sets. We repeated these methods for inpatient only and outpatient only subsets. RESULTS Of 3,183 notes, 689 contained documentation of goals of care discussions. The mean sensitivity of the NLP/ML program was 82.3% (SD 3.2% and the mean specificity was 97.4% (SD 0.7% NLP/ML results had a median positive likelihood ratio of 32.2 (IQR 27.5 39.2) and a median negative likelihood ratio of 0.18 (IQR 0.16 0.20) Performance was better in inpatient only samples than outpatient only samples. CONCLUSION Using NLP and ML techniques, we developed a novel approach to identifying goals of care discussions in the EHR. NLP and ML represent a potential approach toward measuring goals of care discussions as a research outcome and quality metric.", "corpus_id": 221367298, "venue": "Journal of pain and symptom management", "year": 2020, "author_names": [ "Robert Y Lee", "Lyndia C Brumback", "William B Lober", "J Sibley", "Elizabeth L Nielsen", "Patsy D Treece", "Erin K Kross", "Elizabeth Trice Loggers", "James A Fausto", "Charlotta Lindvall", "Ruth A Engelberg", "J Randall Curtis" ], "n_citations": 4, "n_key_citations": 0, "score": 1 }, { "doc_id": "220077684", "title": "Deep natural language processing to identify symptom documentation in clinical notes for patients with heart failure undergoing cardiac resynchronization therapy.", "abstract": "CONTEXT Clinicians lack reliable methods to predict which patients with congestive heart failure (CHF) will benefit from cardiac resynchronization therapy (CRT) Symptom burden may help to predict response, but this information is buried in free text clinical notes. Natural language processing (NLP) may identify symptoms recorded in the electronic health record (EHR) and thereby enable this information to inform clinical decisions about the appropriateness of CRT. OBJECTIVES To develop, train, and test a deep NLP model that identifies documented symptoms in CHF patients receiving CRT. METHODS We identified a random sample of clinical notes from a cohort of patients with CHF who later received CRT. Investigators labeled documented symptoms as present, absent, and context dependent (pathologic depending on the clinical situation) The algorithm was trained on 80% and fine tuned parameters on 10% of the notes. We tested the model on the remaining 10% We compared the model's performance to investigators' annotations using accuracy, precision (positive predictive value) recall (sensitivity) and F1 score (a combined measure of precision and recall) RESULTS Investigators annotated 154 notes (352,157 words) and identified 1340 present, 1300 absent, and 221 context dependent symptoms. In the test set of 15 notes (35,467 words) the model's accuracy was 99.4% and recall was 66.8% Precision was 77.6% and overall F1 score was 71.8. F1 scores for present (70.8) and absent (74.7) symptoms were higher than that for context dependent symptoms (48.3) CONCLUSION A deep NLP algorithm can be trained to capture symptoms in CHF patients who received CRT with promising precision and recall.", "corpus_id": 220077684, "venue": "Journal of pain and symptom management", "year": 2020, "author_names": [ "Richard E Leiter", "Enrico Santus", "Zhijing Jin", "Katherine C Lee", "Miryam Yusufov", "Isabel Chien", "Ashwin Ramaswamy", "Edward T Moseley", "Yujie Qian", "Deborah Schrag", "Charlotta Lindvall" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "203592448", "title": "Natural Language Processing Accurately Measures Adherence to Best Practice Guidelines for Palliative Care in Trauma.", "abstract": "CONTEXT The Trauma Quality Improvement Program Best Practice Guidelines recommend palliative care (PC) concurrent with restorative treatment for patients with life threatening injuries. Measuring PC delivery is challenging: administrative data is non specific and manual review is time intensive. OBJECTIVE To identify PC delivery to patients with life threatening trauma and compare the performance of natural language processing (NLP) a form of computer assisted data abstraction, to administrative coding and gold standard manual review. METHODS Patients =18 years admitted with life threatening trauma were identified from Two Level I trauma centers (7/2016 6/2017) Four PC process measures were examined during the trauma admission: code status clarification, goals of care (GOC) discussion, PC consult, and hospice assessment. The performance of NLP and administrative coding were compared to manual review. Multivariable regression was used to determine patient and admission factors associated with PC delivery. RESULTS There were 76,791 notes associated with 2,093 admissions. NLP identified PC delivery in 33% of admissions compared to 8% using administrative coding. Using NLP, code status clarification was most commonly documented (27% followed by GOC (18% PC consult (4% and hospice assessment (4% Compared to manual review, NLP performed >50 times faster and had a sensitivity of 93% specificity of 96% and accuracy of 95% Administrative coding had a sensitivity of 21% specificity of 92% and accuracy of 68% Factors associated with PC delivery included older age, increased comorbidities, and longer intensive care unit stay. CONCLUSION NLP performs with similar accuracy to manual review but with improved efficiency. NLP has the potential to accurately identify PC delivery and benchmark performance of best practice guidelines.", "corpus_id": 203592448, "venue": "Journal of pain and symptom management", "year": 2019, "author_names": [ "Katherine C Lee", "Brooks V Udelsman", "Jocelyn Streid", "David C Chang", "Ali Salim", "David H Livingston", "Charlotta Lindvall", "Zara Cooper" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "9780175", "title": "A method for determining the number of documents needed for a gold standard corpus", "abstract": "The unstructured narratives in medicine have been increasingly targeted for content extraction using the techniques of natural language processing (NLP) In most cases, these efforts are facilitated by creating a manually annotated set of narratives containing the ground truth; commonly referred to as a gold standard corpus. This corpus is used for modeling, fine tuning, and testing NLP software as well as providing the basis for training in machine learning. Determining the number of annotated documents (size) for this corpus is important, but rarely described; rather, the factors of cost and time appear to dominate decision making about corpus size. In this report, a method is outlined to determine gold standard size based on the capture probabilities for the unique words within a target corpus. To demonstrate this method, a corpus of dictation letters from the Michigan Pain Consultant (MPC) clinics for pain management are described and analyzed. A well formed working corpus of 10,000 dictations was first constructed to provide a representative subset of the total, with no more than one dictation letter per patient. Each dictation was divided into words and common words were removed. The Poisson function was used to determine probabilities of word capture within samples taken from the working corpus, and then integrated over word length to give a single capture probability as a function of sample size. For these MPC dictations, a sample size of 500 documents is predicted to give a capture probability of approximately 0.95. Continuing the demonstration of sample selection, a provisional gold standard corpus of 500 documents was selected and examined for its similarity to the MPC structured coding and demographic data available for each patient. It is shown that a representative sample, of justifiable size, can be selected for use as a gold standard.", "corpus_id": 9780175, "venue": "J. Biomed. Informatics", "year": 2012, "author_names": [ "David A Juckett" ], "n_citations": 21, "n_key_citations": 0, "score": 0 }, { "doc_id": "67426213", "title": "A Comprehensive Study of Text Analytics", "abstract": "The interactions between human languages and computers is termed as Natural Language Processing. These interactions are between the fields of computer science, artificial intelligence, and computational linguistics. As it involves human languages, so the term NLP is referred. NLP requires the expertise in statistics, linguistics, expert systems etc. Basically it aims at text analysis by using automation methods. On the other hand, customer relationship management is an integral part of any organization where in it is structured to fetch all the relevant data pertaining to its customer's viz. customer profile, customer feedback. Transactions on all customer activities etc. The paper aims at the comprehensive study of text analytics using natural language processing. The natural language processing tools can be utilized to identify customer pain points to improve customer relationship management of any organization, an experiment is conducted to use statistical and graphical visualization to arrive at a conclusion by using various techniques of text mining using open source tool.", "corpus_id": 67426213, "venue": "", "year": 2017, "author_names": [ "B N Hiremath", "Malini M Patil" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "74172244", "title": "Neovascular glaucoma following central retinal vein occlusion a case report", "abstract": "Glaucoma is an Important cause of blindness, in particular neovascular glaucoma which is a complex condition and always becomes challenging for the clinician in the past, present and the future. A 54 year old man suffering from blindness of neovascular glaucoma following central retinal vein occlusion in the right eye with no response to Pan Retinal Photocoagulation (PRP) and open angle glaucoma in the left eye has been reported. Systemic conditions as a predisposing factor were not found, so the local ocular background i.e open angle glaucoma was suspected to be the cause of central retinal vein occlusion. In this case the management must be focused on the left eye to avoid further complication. The right eye was on end stage and no response to PRP and the visual acuity Is no light perception (NLP) Enucleation should be considered as the high intraocular pressure (IOP) and ocular pain persisted. Key words: neovascular glaucoma central retinal vein occlusion open angle glaucoma Pan retinal photocoagulation", "corpus_id": 74172244, "venue": "", "year": 2015, "author_names": [ "Budihardjo Budihardjo" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "144243675", "title": "Self hypnosis and osteopathic soft tissue manipulation with a ballet dancer", "abstract": "This single case study of a ballet dancer incorporates essentially osteopathy, self hypnosis and neurolinguistic programming (NLP) in the management of exhaustion, stress, anxiety and pain symptoms of the right thigh, calf and ankle combined with confidence strengthening techniques. Physical and mental burnout symptoms had reached the point of constant pain and overstrain of the muscles of the right leg and hip, spine and neck. In parallel with these were symptoms of exhaustion, unhappiness and a tendency to over focus on other dancers at the expense of self focus and motivation. The osteo/physical therapy entailed the rebalancing of overused, strained and hyper tense muscular tissues using myofascial release techniques, together with the deactivation of trigger points and postural integration. The mental attitude was supported through reframing techniques during self hypnosis directed at general feelings of being blocked, imprisoned, cramped, exhausted and weakened in the right leg. Psychophysiological assessment post therapy was compatible with self regulation training.", "corpus_id": 144243675, "venue": "", "year": 2003, "author_names": [ "Christopher-Marc Gordon", "John H Gruzelier" ], "n_citations": 7, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "191353741", "title": "Sur les paragraphes 2 et 4 du troisieme livre et sur le Prooemium des oracles sibyllins", "abstract": "", "corpus_id": 191353741, "venue": "", "year": null, "author_names": [ "Ferdinand Delaunay" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "186142816", "title": "La Sibylle juive et le 'Troisieme Livre' des 'Pseudo Oracles Sibyllins' depuis Charles Alexandre", "abstract": "", "corpus_id": 186142816, "venue": "", "year": 1987, "author_names": [ "Valentin Nikiprowetzky", "Wolfgang Haase" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "171002979", "title": "La sibylle bru et parente de Noe. Fonction de la pseudepigraphie dans les Oracles sibyllins juifs", "abstract": "Pour comprendre la pratique pseudepigraphique a l'oeuvre dans les Oracles sibyllins, Alexandre d'Helt examine d'abord l'originalite de leur pratique par rapport aux ecrits apocalyptiques du judaisme hellenistique, puis les figures mobilisees au sein du troisieme livre des Oracles et, enfin, la permeabilite de ces textes aux motifs generalement attribues a la pseudepigraphie.", "corpus_id": 171002979, "venue": "", "year": 2013, "author_names": [ "Alexandre D'Helt" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "193658944", "title": "Les Juifs d'Alexandrie", "abstract": "Occupation juive a Alexandrie d'apres les AA. anciens. Importance topographique et numerique mais aussi sociale de par l'organisation originale de la communaute sous les Ptolemees et Rome de la minorite juive. Statut du \"politeuma\" IIs. av. J. C. a la tete un \"Ethnarque\" systeme autonome d'organisation et d'administration ne possedant pas la \"politeia\" qualite du \"polites\" \"citoyen\" veritable. C'est avec l'annexion de l'Egypte par Rome, en 30 av. J. C. que vint l'hostilite et que se developpa a Alexandrie un anti judaisme actif qui devint violent en 38 sous Caius Caligula. Production litteraire et clivage ideologique: tradition de la Bible, dite des Septante, temoin majeur du mouvement optimiste des Juifs vers la culture grecque| Oracles sibyllins, etc. et tendance d'opposition farouche a tout ce qui n'etait pas juif: litterature abondante dont le livre grec d'Esther, Judith et l'Ecclesiastique, les Maccabees, etc.", "corpus_id": 193658944, "venue": "", "year": 1979, "author_names": [ "Andre Paul" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "103868072", "title": "DETERMINACAO DA ATIVIDADE ANTIOXIDANTE TOTAL EM FRUTAS PELA CAPTURA DO RADICAL LIVRE DPPH", "abstract": "Os antioxidantes sao moleculas com capacidade de capturar os radicais livres a partir de seus compostos fenolicos. Diante disso objetivou o estudo de frutos com possivel capacidade antioxidante, utilizando o sistema DPPH, onde a leitura foi feita por espectrofotometria. Os resultados mostram uma variacao de 0,353 abs a 0,834 abs, onde o fruto noz peca apresenta a melhor atividade antioxidante, apresentando 0.353 abs, ao comparar com o figo de jardim 0,662 abs, e ameixa amarela 0,834 abs.", "corpus_id": 103868072, "venue": "", "year": 2017, "author_names": [ "Candida Nissola", "Tais Regina Cutchma", "Cristian Pedro Schu", "Paula Fernandes Montanher" ], "n_citations": 45, "n_key_citations": 1, "score": 1 }, { "doc_id": "171593984", "title": "A TECNICA DE ASSOCIACAO LIVRE DE PALAVRAS SOBRE O PRISMA DO SOFTWARE TRI DEUX MOTS (VERSION 5.2)", "abstract": "A Tecnica de Associacao Livre de Palavras (TALP) faz parte das chamadas tecnicas projetivas, orientada pela hipotese de que a estrutura psicologica do sujeito torna se consciente por meio de manifestacoes de condutas, reacoes, evocacoes, escolhas e criacao. Embora surja no ambito clinico no inicio do seculo XX, apenas a partir dos anos 80 passa a ser utilizada no contexto de pesquisas na Psicologia Social, com enfase nos estudos das Representacoes Sociais (RS) Diferentemente do uso da TALP com objetivos clinicos, no campo da pesquisa, os estudiosos que trabalham com as RS visam identificar as dimensoes latentes destas, por meio da configuracao dos elementos que constituem a trama ou rede associativa dos conteudos evocados em relacao a estimulos indutores. Nesse sentido, tendo se em vista que nas pesquisas em RS e recomendavel utilizar uma diversidade de instrumentos que possibilitem salientar aspectos diferenciados (quantitativos e qualitativos) a respeito do objeto de investigacao, assim como, softwares que permitam aprofundadas e abrangentes formas de analise dos dados coletados, objetiva se apresentar neste manuscrito, em formato tutorial, como aplicar a TALP, elaborar banco de dados a partir do material coletado pela tecnica e, finalmente, como utilizar a versao 5.2 do software Tri Deux Mots para analise dos achados. Espera se assim, que a utilizacao desta tecnica, bem como do software Tri Deux Mots auxiliem pesquisadores no desenvolvimento de pesquisas sobre as RS.", "corpus_id": 171593984, "venue": "", "year": 2017, "author_names": [ "Maria da Penha de Lima Coutinho", "Emerson Araujo Do Bu" ], "n_citations": 17, "n_key_citations": 2, "score": 0 }, { "doc_id": "21922552", "title": "Large scale content based video retrieval with LIvRE", "abstract": "The fast growth of video data requires robust, efficient, and scalable systems to allow for indexing and retrieval. These systems must be accessible from lightweight, portable and usable interfaces to help users in management and search of video content. This demo paper presents LIvRE, an extension of an existing open source tool for image retrieval to support video indexing. LIvRE consists of three main system components (pre processing, indexing and retrieval) as well as a scalable and responsive HTML5 user interface accessible from a web browser. LIvRE supports image based queries, which are efficiently matched with the extracted frames of the indexed videos.", "corpus_id": 21922552, "venue": "2016 14th International Workshop on Content Based Multimedia Indexing (CBMI)", "year": 2016, "author_names": [ "Gabriel de Oliveira Barra", "Mathias Lux", "Xavier Giro-i-Nieto" ], "n_citations": 16, "n_key_citations": 0, "score": 0 }, { "doc_id": "196389576", "title": "Anestesia venosa total livre de opioides, com infusoes de propofol, dexmedetomidina e lidocaina para colecistectomia laparoscopica: estudo prospectivo, randomizado e duplo cego", "abstract": "Resumo Justificativa e objetivos O uso de opioides no periodo intraoperatorio pode estar associado a hiperalgesia e ao aumento do consumo de analgesicos no periodo pos operatorio. Efeitos colaterais como nausea e vomito no periodo pos operatorio, por causa do uso perioperatorio de opioides, podem prolongar a alta. Nossa hipotese foi que a anestesia venosa total com o uso de lidocaina e dexmedetomidina em substituicao a opioides pode ser uma tecnica opcional para a colecistectomia laparoscopica e estaria associada a uma menor solicitacao de fentanil e incidencia de nausea e vomito no periodo pos operatorio. Metodos Foram programados para colecistectomia laparoscopica eletiva 80 pacientes adultos, estado fisico ASA I II Os pacientes foram randomicamente alocados em dois grupos para receber anestesia livre de opioides com infusoes intravenosas IV de dexmedetomidina, lidocaina e propofol (Grupo DL) ou anestesia baseada em opioides com infusoes de remifentanil e propofol (Grupo RF) Todos os pacientes receberam um regime padrao de analgesia multimodal. Um dispositivo de analgesia controlada pelo paciente foi ajustado para liberar fentanil IV por seis horas apos a cirurgia. O desfecho primario foi o consumo de fentanil no pos operatorio. Resultados O consumo de fentanil na segunda hora de pos operatorio foi significativamente menor no grupo DL do que no Grupo RF, 75 59 mg e 120 94 mg, respectivamente, mas foi comparavel na sexta hora de pos operatorio. Durante a anestesia, houve mais eventos hipotensivos no Grupo RF e mais eventos hipertensivos no grupo DL, ambos estatisticamente significativos. Apesar de apresentar um tempo de recuperacao mais prolongado, o Grupo DL apresentou escores de dor e consumo de analgesicos de resgate e de ondansetrona significativamente mais baixos. Conclusao A anestesia livre de opioides com infusoes de dexmedetomidina, lidocaina e propofol pode ser uma tecnica opcional para a colecistectomia laparoscopica, especialmente em pacientes com alto risco de nausea e vomito no pos operatorio.", "corpus_id": 196389576, "venue": "", "year": 2015, "author_names": [ "Mefkur Bakan", "Tarik Umutoglu", "Ufuk Topuz", "Harun Uysal", "Mehmet Bayram", "Huseyin Kadioglu", "Ziya Salihoglu" ], "n_citations": 47, "n_key_citations": 0, "score": 0 }, { "doc_id": "198313443", "title": "LIVRE DEMANDA E SINAIS DE FOME DO NEONATO: PERCEPCAO DE NUTRIZES E PROFISSIONAIS DA SAUDE", "abstract": "This paper aims to understand the concept of free demand and hunger signals of the newborn from the perspective of wet nurses and of health professionals. A qualitative study with 21 wet nurses and 20 health professionals working in a Child Friendly maternity hospital was performed. The data was collected through recorded interviews and it was used content analysis in the thematic mode. The following subjects were approached: searching the meaning of free demand and recognition of the newborn's hunger signals. From them, It was evidenced that wet nurses and some professionals do not know the real meaning of free demand and they indicate the cry as main signal of child hunger.", "corpus_id": 198313443, "venue": "", "year": 2017, "author_names": [ "Fernanda Paula Cerantola Siqueira", "Barbara Almeida Santos" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "143056511", "title": "Autour du livre. Les metamorphoses de la question sociale", "abstract": "Cet article presente les theses principales de l'ouvrage que l'A. a consacre a la question sociale. Une cause principale de la crise sociale actuelle est, selon lui, l'effritement du salariat a travers les dereglementations telles que la flexibilite. Il estime que les mesures sociales telles que le RMI font l'economie d'une reflexion sur les causes de l'exclusion et il redoute un neopaternalisme Pour lui, la sociologie a a voir avec le cours historique du monde. Il exprime ce point de vue notamment en critiquant les ambiguites des politiques sociales comment construire une societe dans la duree avec des gens qui perdent les attributs de la citoyennete, en particulier ceux qui etaient fondes sur le travail protege", "corpus_id": 143056511, "venue": "", "year": 2013, "author_names": [ "Robert Castel" ], "n_citations": 163, "n_key_citations": 12, "score": 1 } ]

[ { "doc_id": "148161571", "title": "How to Integrate Folk Games into Rural Kindergarten Curriculum", "abstract": "Folk games is a kind of entertainment,which is spread in the life of the people.It is helpful for children's mental health and the inheritance of national traditional culture.Conducting folk games has a big comparative advantage in rural kindergarten,also is significant in the development of rural kindergarten,enrichment of curriculum,improvement of teachers' development consciousness and ability.Because of the shortcoming in kindergarten,more investment of government are needed,and it can provide preschool teachers in rural kindergarten for more training chances,as well as strengthening cooperation between family and kindergarten", "corpus_id": 148161571, "venue": "", "year": 2014, "author_names": [ "Xu Li-hon" ], "n_citations": 0, "n_key_citations": 0, "score": 6 }, { "doc_id": "156069616", "title": "Discussion on the Guiding Ideology and Practical Strategy of Folk Children Games in Kindergarten", "abstract": "It discussed the cultural implication and the educational value in this paper on the folk games for children in kindergarten,put forward the guiding principle of carrying out the folk children' s games from the perspective of curriculum development,summed up the practical strategies of carrying out children's folk games from the aspects of material conditions,spiritual atmosphere,main content and implementation ways of them.", "corpus_id": 156069616, "venue": "", "year": 2014, "author_names": [ "Gao We" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "151467925", "title": "Movement games in the past and their usage in today's kindergarten", "abstract": "The topic of the diploma thesis is folk movement and merry making activities and their application in the kindergarten Ciciban Novo mesto. The theoretical part of the diploma thesis describes activities in relation to child's development, history of movement and merry making activities, different folk movement and merry making activities and importance of their use in a kindergarten. Empirical part of the thesis tackles the question whether childcare workers are acquainted with such activities, whether they include them in their programmes and how they integrate them in the schemata and how children react to them. The research showed that childcare workers are acquainted with the activities and that incorporation of the activities is either planned or unplanned. Folk movement and merry making activities are simple, interesting, fun and children love to participate in them. In addition, they help in developing child's physical development, aid in the improvement of child's socialization and physical activity.", "corpus_id": 151467925, "venue": "", "year": 2016, "author_names": [ "Petja Kolegar" ], "n_citations": 0, "n_key_citations": 0, "score": 4 }, { "doc_id": "59417788", "title": "Cultivation of Numerical Thinking in Early Childhood Education Using Folk Games in Rural China", "abstract": "I early childhood education in rural areas, including ethnic minority areas, children's folk games often play an important role in cultivating numerical thinking. The establishment of number sense is a concrete representation of the development of numerical thinking. Accordingly, this study evaluated the number sense of senior kindergarten and grade 1 students with and without the influence of playing folk games. The results showed that the groups of students exposed to the games were significantly superior to the non influenced groups in counting, calculation, arithmetic cognition and number transformation, among other areas. Therefore, under the premise of the unbalanced development of education in rural China, it is necessary to emphasize the development and expansion of children's folk games to reduce the delay in cultivating mathematical thinking.", "corpus_id": 59417788, "venue": "", "year": 2014, "author_names": [ "Xie Yimin", "Wang Huiying" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "59026775", "title": "Research on the Boost of Development on Young Children s Fine Motor by Folk Games", "abstract": "As Chinese traditional folk culture, folk games have unique educational value which can boost the development of young children's fine motor. Based on previous investigation of fine motor skill of children in Nanchong, Sichuan Province, the researcher chose a middle class in public city kindergarten A with lower survey score as the study object. The class with lower level on fine motor skill was set as an intervention group and the other class as a control group to conduct a 3 month educational activity about folk games. During the process, the researchers, being the teachers themselves, used qualitative research method to study the process of educational activities about folk games targeting at the boost of development on young children's fine motor skills, by tracking and observing children, and physical analysis of their painting and handwork. The research results indicate that there is an overall improvement of fine motor skills of young children from the intervention group in kindergarten A and their performances on pinching, touching, drawing and cutting all surpass children from the control group.", "corpus_id": 59026775, "venue": "", "year": 2016, "author_names": [ "Xia Wei" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "151586286", "title": "Research on the Boost of Development on Young Children's Fine Motor by Folk Games", "abstract": "As Chinese traditional folk culture, folk games have unique educational value which can boost the development of young children's fine motor. Based on previous investigation of fine motor skill of children in Nanchong, Sichuan Province, the researcher chose a middle class in public city kindergarten A with lower survey score as the study object. The class with lower level on fine motor skill was set as an intervention group and the other class as a control group to conduct a 3 month educational activity about folk games. During the process, the researchers, being the teachers themselves, used qualitative research method to study the process of educational activities about folk games targeting at the boost of development on young children's fine motor skills, by tracking and observing children, and physical analysis of their painting and handwork. The research results indicate that there is an overall improvement of fine motor skills of young children from the intervention group in kindergarten A and their performances on pinching, touching, drawing and cutting all surpass children from the control group.", "corpus_id": 151586286, "venue": "", "year": 2016, "author_names": [ "Xia Wei" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "54213423", "title": "Research on the Boost of Development on Young Children s Fine Motor by Folk Games", "abstract": "As Chinese traditional folk culture, folk games have unique educational value which can boost the development of young children's fine motor. Based on previous investigation of fine motor skill of children in Nanchong, Sichuan Province, the researcher chose a middle class in public city kindergarten A with lower survey score as the study object. The class with lower level on fine motor skill was set as an intervention group and the other class as a control group to conduct a 3 month educational activity about folk games. During the process, the researchers, being the teachers themselves, used qualitative research method to study the process of educational activities about folk games targeting at the boost of development on young children's fine motor skills, by tracking and observing children, and physical analysis of their painting and handwork. The research results indicate that there is an overall improvement of fine motor skills of young children from the intervention group in kindergarten A and their performances on pinching, touching, drawing and cutting all surpass children from the control group.", "corpus_id": 54213423, "venue": "", "year": 2016, "author_names": [ "Xia Wei" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "149400001", "title": "Children's folk music in second age in kindergarten", "abstract": "In the thesis I researched the representation of children's folk music in kindergarten. In the theoretical part I discussed the traditional folk music and put emphasis on children's folk music, dances, counting rhymes, games and musical instruments. Besides that I also researched how often folk music appears in the curriculum for kindergartens, the technical literature and the didactic materials for preschool education. The empirical part contains quantitative and qualitative research. In the quantitative part of the research I analysed the results of the interview with preschool teachers about including children's folk tradition in kindergarten, which I gained with a survey questionnaire. In the qualitative part of the research, I was finding out how interested children are in activities that have to do with folk tradition through analysing diary notes, photographs, audio notes and children's statements. In the framework of the research I carried out more activities, through which children learned about children's folk music, dances, counting rhymes, games and musical instruments. I found out that children have an interest in learning folk tradition, that they receive it with joy and they quickly assimilate it. Preschool teachers also have an interest in including children's folk music in the kindergarten, but they have several problems with it. Among those are the most distinct ones, that they have too little prior knowledge, that in the curriculum for kindergartens is not enough emphasis on this area, that there are not enough seminars on this subject and that there is too little material with children's folk music available. As a consequence, the folk music tradition is rarely included in the kindergarten's planned activities, or it is only inferior quality. In the end, I interpreted the results of both researches based on the relevant references and technical literature.", "corpus_id": 149400001, "venue": "", "year": 2017, "author_names": [ "Meta Oblak" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "151827106", "title": "Children's folk heritage through creative movement with the youngest kindergarten children", "abstract": "The thesis, entitled Children's folk heritage through creative movement with the youngest kindergarten children, consists of a theoretical and an empirical part. The theoretical part presents national folk heritage (songs, dances and games) focusing on children's folk heritage in songs, dances and games. The content in question is adequate for children from the first age group. The thesis describes dance and movement development of the child, dance and movement folk games for children aged from 1 to 3 years, and their significance for the child. It also describes cultural heritage as provided for in the implemented kindergarten curriculum. The empirical part of the thesis first discusses the purpose, goals and research questions related to the introduction of folk games through creative movement in a group of the youngest kindergarten children. My goal was to determine which antique objects, customs, dances and songs children already know, which folk games they play with their parents, how children engage in folk games, dances and songs and how they respond to them. After month long planning and research on education in the first age group, I proposed a new way to integrate dance education and children's folk heritage into all areas of activity. The thesis also contains a description of the implementation of the activities and their assessment. The assessment of the educational tasks indicates that children from the first age group are more eager to embrace folk heritage through dance and movement activities. The process is smoother and children can further enhance the heritage at their own initiative during free play without being led. I opted for this topic because many undergraduate theses have already discussed dance folk heritage in older kindergarten groups, but not the youngest.", "corpus_id": 151827106, "venue": "", "year": 2016, "author_names": [ "Karin van Bakel" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "148384468", "title": "The Application of the Mongolian Traditional Games in the Educational Activities of Early Childhood", "abstract": "With the progress of the society and the development of the times, Mongolian children's traditional games are gradually marginalized, or are even on the verge of disappearing, so how to maintain the heritage of national culture and bring the traditional folk games back into kindergarten classrooms is very urgent. In the paper, the kinds, and the characteristics of Mongolian children's traditional games are analyzed, and some suggestions to solve the existing application problems in kindergarten are put forward.", "corpus_id": 148384468, "venue": "", "year": 2015, "author_names": [ "Du Chun-jua" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "149029149", "title": "Changing people's attitudes and beliefs toward driving through floodwaters: Evaluation of a video infographic", "abstract": "Abstract Despite awareness of campaigns such as 'Turn Around, Don't Drown' and the Australian state of Queensland's 'If It's Flooded, Forget It' people continue to drive through floodwaters, causing loss of life, risk to rescuers, and damage to vehicles. The aim of this study was to develop a video infographic that highlights the dangers of driving through floodwaters and provide safety tips to reduce the risk, and to evaluate its effectiveness in changing the beliefs and intentions of Australian adults toward this risky driving behaviour. This study adopted an online three wave non controlled pretest posttest design. Australian licensed drivers (N 201, male 41, female 160; Mage 34.10) self reported their demographic and psychological variables (intention, attitude, subjective norm, barrier self efficacy, risk perception, anticipated regret, perceived susceptibility, and perceived severity) at baseline (T1) immediately post intervention (T2) and at a one month follow up (T3) Messages in the video infographic were developed based on psychological theory and empirical evidence, using data on causal factors derived from coronial records and the findings of behavioural research. Results indicated that men had significantly higher intentions and attitudes and significantly lower barrier self efficacy, risk perception, anticipated regret, perceived susceptibility, and perceived severity with respect to driving through floodwater than women. Statistically significant time x gender interaction effects were also found; attitude and subjective norm were significantly lower between T1 and T2 for both men and women but scores between T2 and T3 remained significantly lower for women only. In addition, perceived susceptibility and perceived severity scores were significantly higher in women across T1 and T2, with the difference maintained at T3. In contrast, there were no differences in scores across the three time points for men. The implications of these findings for road safety and drowning prevention messages targeting drivers during floods are discussed.", "corpus_id": 149029149, "venue": "", "year": 2018, "author_names": [ "Kyra Hamilton", "Amy E Peden", "Jacob J Keech", "Martin S Hagger" ], "n_citations": 69, "n_key_citations": 0, "score": 0 }, { "doc_id": "54617248", "title": "Dissemination Using Infographic Reports Depicting Program Impact of a Community Based Research Program: eB4CAST in iCook 4 H", "abstract": "Objective: To evaluate barriers to dissemination and implementation and perceptions of the Evidence Based Forecast Capture, Assemble, Sustain, Timelessness (eB4CAST) dissemination infographic tool as part of iCook 4 H dissemination. Design: Online surveys and phone interviews. Participants: Experts (n 35) in community research completed the survey; 13 completed the interview. Main Outcomes Measure: Experts' perceptions of eB4CAST reports used for iCook 4 H dissemination. Analysis: Frequency and thematic analysis. Results: Survey respondents agreed (85% that the eB4CAST infographic provided a clear understanding of iCook 4 H and relevant information (83% Statistics included in the infographic were reported as easily understood (66% Respondents (83% stated that the infographic would be helpful to share outcomes with stakeholders. Thematic analysis showed that the majority of interviewees agreed that eB4CAST infographics might aid in overcoming barriers to dissemination and implementation including communication and community ownership. Conclusions and Implications: This study provides perceptions from experts regarding the value of using eB4CAST infographics as a tool to disseminate the impact of a community nutrition program.", "corpus_id": 54617248, "venue": "Journal of nutrition education and behavior", "year": 2019, "author_names": [ "Melissa D Olfert", "Rebecca L Hagedorn", "Makenzie L Barr", "Sarah E Colby", "Kendra K Kattelmann", "Lisa Franzen-Castle", "Adrienne A White" ], "n_citations": 8, "n_key_citations": 1, "score": 1 }, { "doc_id": "199065209", "title": "Pt Co/C Cathode Catalyst Degradation in a Polymer Electrolyte Fuel Cell Investigated by an Infographic Approach Combining Three Dimensional Spectroimaging and Unsupervised Learning", "abstract": "Catalyst degradation at the cathode of a membrane electrode assembly (MEA) remains a critical issue for practical polymer electrolyte fuel cell (PEFC) operation, but such wet systems impede detaile.", "corpus_id": 199065209, "venue": "The Journal of Physical Chemistry C", "year": 2019, "author_names": [ "Yu Tan", "Hirosuke Matsui", "Nozomu Ishiguro", "Tomoya Uruga", "Duong-Nguyen Nguyen", "Oki Sekizawa", "Tomohiro Sakata", "Naoyuki Maejima", "Kotaro Higashi", "Hieu Chi Dam", "Mizuki Tada" ], "n_citations": 12, "n_key_citations": 0, "score": 0 }, { "doc_id": "214140214", "title": "Infographic oriented management model of cyber physical systems during a building life cycle", "abstract": "The study contributes to cyber physical system (CPS) modelling during a building life cycle. The framework through which systems engineers could design and construct these CPS requires an ontology and a structure of terms. Thus, the structure of terms for modern information system, including approaches, concepts and terms, is proposed as the basis of ontology. The task of the study was to present the model of CPS management structure in accordance with the Industry 4.0 program. In order to construct it the dynamics of the relationship of terms has been given. An infographic modeling method has been used in the study. The subject of research is one of the model levels, responsible for knowledge conversion from machine digital to human oriented form, which will be the basis for the operator's understanding of the knowledge accumulated by the CPS, and will help to make non trivial management decisions. The structure of terms including approaches, concepts and terms, is proposed as the basis of ontology. The dynamics of the relationship of terms is given. Model of CPS management structure is presented in accordance with the Industry 4.0 program. The \"Infographic models management\" level specific to the CPS is defined. Three types of infographic slides which can be issued by CPS within the domain area of construction and design are proposed.", "corpus_id": 214140214, "venue": "", "year": 2019, "author_names": [ "Konstantin Yu Losev", "Vitaly Chulkov" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "208344500", "title": "Understanding public health systems: a participatory systematic review and systems infographic", "abstract": "Abstract Background It is increasingly recognised that public health should be considered as a complex system of interconnecting elements, which can promote or undermine good health and wellbeing and in which policy change can impact throughout the system, affecting the wider determinants of public health. We aimed to develop an evidence based and stakeholder informed understanding of public health systems and produce an infographic to promote dialogue about where system changes might be levered to improve public health outcomes and impacts. Methods An initial systems framework was developed by consensus at a workshop of stakeholders from core public health agencies and Directors of Public Health across the UK. We used the framework to inform two linked systematic reviews (one on public health systems overall and one on early years policy) of published and grey literature, to answer the review question 'what examples can be identified of similarities and differences in the public health systems and policy approaches of the four countries of the UK since devolution' Relevant literature identified via electronic database searching was quality appraised and synthesised using narrative methods. Evidence from the two reviews was used to update the systems framework, which was then further revised for clarity via stakeholder consultation. A graphic design professional assisted in the production of the infographic. Findings The public health systems infographic appendix draws on evidence from 220 documents included in the two reviews, together with input from stakeholders. The infographic depicts the key elements of a public health system (ie, origin and types of policy action, organisational structures and systems, ways of working, influencing factors, outcomes, impacts) and potential relationships between public health action, outcomes and impacts. The infographic enables users to consider where they are situated in the system, which elements affect the outcomes they are trying to achieve, how elements connect and interact, how these enable or constrain actions, and where users might influence the system to achieve change. Interpretation The strength of this study is the use of novel stakeholder informed systematic review methods, which enabled the creation of an infographic, as a tool to encourage dialogue and reflection about leveraging change within PH systems. Limitations relate to representativeness of the stakeholder group involved in developing the systems framework, although the use of systematic review methods reduced potential bias in interpretation of evidence. Funding Health Foundation.", "corpus_id": 208344500, "venue": "The Lancet", "year": 2019, "author_names": [ "Amy Barnes", "Michelle A Black", "Susan Kathryn Baxter", "Andrew S Furber", "Mark Strong", "Claire Beynon", "Mary Anne T Dallat", "Catherine Page Jeffery", "Alisha R Davies", "Elizabeth Goyder", "Evangelos I Kritsotakis", "Mark Clowes" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "194385273", "title": "An Infographic Approach to Presenting Dance Data from the Choreographer's Studio", "abstract": "In this paper the authors introduce their infographic approach for the presentation of dance data from two extensive case studies on the creative processes of two very dissimilar contemporary choreographers. This approach has been developed in the framework of the BlackBox Arts Cognition Project and was implemented in both 2D and 3D environments, resulting in the creation of four short animated infographic films, a documentary film, and a multiple viewport platform for two 360 degree dance videos. Drawing on selected examples from these film productions, the authors discuss in two distinct case studies, which aspects of contemporary dance and choreographic thinking are computed and visualized in ways that allow to access each choreographer's unique artistic vision and creative process. Based on this discussion, the authors suggest to consider a broader perspective on what might constitute 'dance data' and elaborate on how such data sets can be presented visually employing embodied filmmaking and infographic storytelling techniques.", "corpus_id": 194385273, "venue": "", "year": 2019, "author_names": [ "Stephan Jurgens", "Carla Fernandes", "Vito Evola" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "198405402", "title": "FCFA HyCRISTAL Climate Narrative Urban Infographic and Brief", "abstract": "The impacts of climate change will vary across the region according to a range of local factors. This infographic represents the impacts that may be felt in Urban East Africa under three different possible climate futures. Which of these impacts could be felt in your community in these three different climates?", "corpus_id": 198405402, "venue": "", "year": 2019, "author_names": [ "Laura E Burgin", "Celia Way", "Barbara Evans", "David P Rowell", "John H Marsham", "Fred Semazzi", "Geoffrey Sabiiti", "Julio Araujo", "M J Ascott", "Dan J Lapworth", "David M J Macdonald", "Caroline M Wainwright" ], "n_citations": 2, "n_key_citations": 1, "score": 0 }, { "doc_id": "196349266", "title": "Infographic. New Zealand Rugby's concussion management pathway", "abstract": "Concussions in rugby union (rugby) impact not only player welfare but parental and players' decisions around participation, a concern for rugby administrators around the world.1 2 To ensure player welfare, World Rugby has developed concussion management recommendations (http:/playerwelfare.worldrugby.org/concussion)3; however, the practical application and enforcement of these recommendations presents a challenge.4 5 To address this challenge, New Zealand Rugby (NZR) as part of a National Concussion Initiative (infographic 1) developed a concussion management pathway (CMP) that considers the various stakeholders involved in the management of concussion as well as ways to support improved concussion management at the", "corpus_id": 196349266, "venue": "British Journal of Sports Medicine", "year": 2019, "author_names": [ "Danielle Salmon", "Janelle Romanchuk", "Ian Murphy", "John Sullivan", "Simon R Walters", "Chris Whatman", "Amanda Clacy", "Sierra Keung", "Klazina Van Der Vis" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "210295978", "title": "Possible futures for rural East Africa under a changing climate:HyCRISTAL climate narrative rural infographic and Brief", "abstract": "The stories on the infographic and detailed in the accompanying brief describe three possible futures for rural East Africa in 2050. How the climate will change in the coming decades is uncertain, so three different plausible futures are included to demonstrate this range. These futures do not cover every possible outcome projected by climate models. The stories also describe some of the resulting impacts that could be experienced in rural areas. However, these impacts will vary across the region due to a range of local factors.", "corpus_id": 210295978, "venue": "", "year": 2019, "author_names": [ "Laura E Burgin", "Grady Walker", "Rosalind J Cornforth", "David P Rowell", "John H Marsham", "Fred Semazzi", "Geoffrey Sabiti", "Andrew Ainslie", "Julio Araujo", "M J Ascott", "Dai Clegg", "Andrew Clenaghan", "Dan J Lapworth", "Kamazima M M Lwiza", "David M J Macdonald", "Celia Petty", "Caroline M Wainwright" ], "n_citations": 5, "n_key_citations": 1, "score": 0 }, { "doc_id": "164866300", "title": "The path of a strong female character (infographic)", "abstract": "The label \"Strong Female Character\" is too often thrown around to describe any female protagonist whether that character takes a strong, confident role, or is primarily used as a plot device. We see the positive strong female character as a figure of smarts and confidence who acts and overcomes instead of always being acted upon. Follow this infographic that, with a bit of humour, travels through the journey of a positive, strong female character.", "corpus_id": 164866300, "venue": "", "year": 2019, "author_names": [ "Ben Worth" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "211238462", "title": "Corporate Medical Policy Digital Breast Tomosynthesis (DBT) 3D Mammography Description of Procedure or Service DBT is a three dimensional (3D) breast imaging technology that uses a rotating X ray source to acquire", "abstract": "DBT is a three dimensional (3D) breast imaging technology that uses a rotating X ray source to acquire multiple image slices at several angles. The X ray source rotates around the breast in an arc. Serial exposures are taken every few degrees in the arc rotation. These images are then reconstituted by software to produce a 3Dimage of the breast, similar to computed tomography (CT/CAT scanning) For screening, DBT is used in conjunction with full film digital mammography (FFDM) The results must be interpreted by a radiologist specialized in mammography. Tomosynthesis typically involves additional imaging time and radiation exposure.", "corpus_id": 211238462, "venue": "", "year": 2020, "author_names": [], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "85543769", "title": "Accuracy of Synthetic 2D Mammography Compared With Conventional 2D Digital Mammography Obtained With 3D Tomosynthesis.", "abstract": "OBJECTIVE The purpose of this study was to compare the diagnostic performance of synthetic 2D imaging generated from 3D tomosynthesis (DBT) with traditional 2D full field digital mammography (FFDM) by use of the most up to date software algorithm in an urban academic radiology practice. MATERIALS AND METHODS The records of patients undergoing screening mammography with DBT, synthetic 2D imaging, and FFDM between August 13, 2014, and January 31, 2016, were retrospectively collected. The cohort included all biopsy proven breast cancers detected with screening mammography during the study period (n 89) and 100 cases of negative or benign (BI RADS category 1 or 2) findings after 365 days of follow up. In separate sessions, three readers blinded to outcome reviewed DBT plus synthetic 2D or DBT plus FFDM screening mammograms and assigned a BI RADS category and probability of malignancy to each case. The diagnostic performance of each modality was assessed by calculating sensitivity and specificity. Reader performance was assessed by ROC analysis to estimate the AUC of the likelihood of malignancy. RESULTS No statistically significant difference was found in diagnostic accuracy (sensitivity, specificity, positive predictive value, or negative predictive value) between DBT plus synthetic 2D mammography and DBT plus FFDM. There was no statistically significant difference between the AUC of DBT plus synthetic 2D mammography and the AUC of DBT plus FFDM for any reader. CONCLUSION DBT plus synthetic 2D mammography performs as well as and not worse than DBT plus FFDM in measures of diagnostic accuracy and may be a viable alternative for decreasing radiation dose without sacrificing diagnostic performance.", "corpus_id": 85543769, "venue": "AJR. American journal of roentgenology", "year": 2019, "author_names": [ "Katherine Simon", "Katerina Dodelzon", "Michele B Drotman", "Allison Levy", "Elizabeth Kagan Arleo", "Gulce Askin", "Janine T Katzen" ], "n_citations": 9, "n_key_citations": 0, "score": 1 }, { "doc_id": "113595882", "title": "Does the synthesised digital mammography (3D DM) change the ACR density pattern?", "abstract": "Poster: \"ECR 2015 B 0211 Does the synthesised digital mammography (3D DM) change the ACR density pattern?\" by: \"P. MARTINEZ MIRAVETE1, M. Millor Muruzabal2, P. Garcia Barquin2, A. Elizalde2, L. J. Pina Insausti2, J. Etxano2, P. Bartolome2; 1Zaragoza/ES, 2Pamplona/ES\"", "corpus_id": 113595882, "venue": "", "year": 2015, "author_names": [ "Paula Martinez Miravete", "Maite Millor Muruzabal", "Paula Garcia-Barquin", "Arlette Elizalde", "Luis Javier Pina Insausti", "Jon Etxano", "Pablo Bartolome" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "86404754", "title": "Generating synthetic mammograms for stationary 3D mammography", "abstract": "Purpose. Investigate synthetic mammography approaches for carbon nanotube (CNT) enabled stationary digital breast tomosynthesis (sDBT) Methods. Projection images of breast mimicking phantoms containing soft tissue masses and microcalcification clusters collected by sDBT were used to develop weighted intensity forward projection algorithms that generated a synthetic mammogram from the reconstructed 3D image space. Reconstruction was accomplished by an adapted fan volume modification of the simultaneous iterative reconstruction technique. Detectability indices were used to quantify mass and calcification visibility. The image processing chain was then applied to projection views collected by sDBT on women with \"suspicious\" breast lesions detected by standard screening 2D digital mammography. Results. Quantifying detectability allowed correlation between the visibility of clinically important image features and the order of the polynomial weighting function used during forward projection. The range of weighted functions exists between the extremes of an average intensity projection (zero order) and maximum intensity projection (infinite order) with lower order weights emphasizing soft tissue features and higher order weights emphasizing calcifications. Application of these algorithms to patient images collected by sDBT, coupled with dense artifact reduction and background equalization steps, produced synthetic mammograms on which additional post processing approaches can be explored, with the actual mammogram providing a reference for comparison. Conclusions. An image processing chain with adjustable weighting during forward projection, dense artifact reduction, and background equalization can yield a range of sDBT based synthetic mammograms that display clinically important features differently, potentially improving the ability to appreciate the association of masses and calcifications.", "corpus_id": 86404754, "venue": "Medical Imaging", "year": 2019, "author_names": [ "Connor Puett", "Christina R Inscoe", "Jianping Lu", "Yueh Z Lee", "Otto Zhou" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "201672526", "title": "Breast phantoms for 2D digital mammography with realistic anatomical structures and attenuation characteristics based on clinical images using 3D printing.", "abstract": "The aim of this work was to develop a production process for breast phantoms for 2D digital mammography (DM) with realistic anatomical structures and attenuation characteristics based on clinical images using 3D printing. The presented production process is based on PolyJet 3D printing technology using a polypropylene like printing material. First, an attenuation calibration function for this material and the achievable lateral resolution of the printing process of about 200 um was determined. Subsequently, to generate the digital 3D model of the breast phantom, the pixel intensities of the unprocessed clinical image that are related to the attenuation along the z axis of the breast, were converted to corresponding phantom heights using the calibration function. To validate the process, an image of the 3D printed breast phantom was acquired on the full field digital mammography (FFDM) system used for calibration and compared with the clinical image in terms of anatomical structures and associated attenuation characteristics. The exposure parameters and image impression of the phantom were evaluated using five other FFDM systems of different manufacturers and types. Results demonstrated that the anatomical structures in the images and the attenuation characteristics of a female breast and the derived phantom agreed on the FFDM system used for calibration. The automatic exposure control segmentation, the automatically selected exposure parameters and the image postprocessing of the clinical and phantom image indicated a high level of conformity. As shown, the phantom is also suitable for other FFDM systems. In conclusion, an approach to produce anthropomorphic breast phantoms for DM offering realistic anatomical structures and attenuation characteristics based on clinical images was successfully developed. As shown, the phantom realistically simulated the original female breast. Therefore, it is to expect that such phantoms are promising to support bridging the gap between physical technical and diagnostic image quality assessment. In addition, they enable a variety of practical and scientific applications for which present technical phantoms are not suitable.", "corpus_id": 201672526, "venue": "Physics in medicine and biology", "year": 2019, "author_names": [ "Stephan Schopphoven", "Pierre Cavael", "Karin Bock", "Martin Fiebich", "Ulf Mader" ], "n_citations": 6, "n_key_citations": 1, "score": 1 }, { "doc_id": "132303150", "title": "Screening mammography: Is 3D better?", "abstract": "Findings suggest 3D mammography may have advantages over 2D mammography in several areas when it comes to cancer diagnosis in younger women.", "corpus_id": 132303150, "venue": "", "year": 2019, "author_names": [ "Els Judith M Orvos" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "55067919", "title": "Is synthetised Digital Mammography (3D DM) superior to conventional Digital Mammography (2D DM) A retrospective study of 210 patients", "abstract": "Poster: \"ECR 2015 B 0923 Is synthetised Digital Mammography (3D DM) superior to conventional Digital Mammography (2D DM) A retrospective study of 210 patients\" by: \"P. Martinez Miravete1, P. Garcia Barquin2, M. Millor Muruzabal2, J. Etxano2, A. Elizalde2, L. Pina2, L. R. Zalazar2; 1Zaragoza/ES, 2Pamplona/ES\"", "corpus_id": 55067919, "venue": "", "year": 2015, "author_names": [ "Paula Garcia Barquin" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "201753154", "title": "Pilot trial of digital breast tomosynthesis (3D mammography) for population based screening in BreastScreen Victoria", "abstract": "To estimate detection measures for tomosynthesis and standard mammography; to assess the feasibility of using tomosynthesis in population based screening for breast cancer.", "corpus_id": 201753154, "venue": "The Medical journal of Australia", "year": 2019, "author_names": [ "Nehmat Houssami", "Darren Lockie", "Michelle Clemson", "Vicki Pridmore", "David Taylor", "Georgina Marr", "Jill Evans", "Petra Macaskill" ], "n_citations": 9, "n_key_citations": 0, "score": 0 }, { "doc_id": "197540699", "title": "3D mammography is on the upswing in the US, as experts argue about its value", "abstract": "While some doctors are happily recommending digital breast tomosynthesis, Jeanne Lenzer reports that the value of adding an extra dimension to mammography remains decidedly unproven", "corpus_id": 197540699, "venue": "BMJ", "year": 2019, "author_names": [ "Jeanne Lenzer" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "190866823", "title": "Followup mammography after breast conservation therapy: Is 3D Tomosynthesis(3DT) worth it?", "abstract": "6628 Background: Screening three dimensional tomosynthesis mammography (3DT) is more cost effective than two dimensional mammography (2DM) for detecting breast cancer, however cost effectiveness as a follow up for treated breast cancer is unknown. We retrospectively analyzed the downstream workup and costs associated with 3DT compared to 2DM when employed as initial follow up imaging in breast conservation therapy (BCT) Methods: Between the years 2015 2017, 450 consecutive BCT patients ages 32 89 with a follow up 3DT (n 162) or 2DM (n 288) were reviewed in this IRB approved study. The primary endpoint was further workup after follow up mammogram and associated healthcare costs at 1 year. Downstream workup was secondarily tested for correlation with clinical and treatment related variables. A single 3DT cost an estimated $149 compared to $111 for a 2DM, based on Centers for Medicare claims data Oncology Care Model. Results: Patient clinical characteristics were 6% DCIS, 10% T1a, 29% T1b, 35% T1c, 19% T2, 88% N0, 9% N1, 3% N2, 76% ER+/PR+/HerNeu2 12% TNBC, and 14% Her2Neu+ Whole breast radiation was given with conventional (59% and hypo (39% fractionation (81% with a boost) and 10% received accelerated partial breast irradiation. First post treatment mammogram was received within 3 months (20% 3 6 months (32% and after 6 months (48% following RT. There were no differences in breast density, patient age, T/N stage, receptor status, type of RT, or mammogram timing between those in the 2DM and 3DT groups. The following downstream workup ensued for 3DT compared to 2D imaging: 18% vs 29% short interval (6 month) mammogram (OR 1.83, P 0.01) 6% vs 11% breast MRI (OR 1.90, P 0.08) 4% ultrasound for each, and 3% biopsy for each (1 positive in the 2D group) Including downstream workup, the estimated cost per patient in the 3DT group $249.00 compared to $253.64 in the 2D group. With multivariable analysis the independent predictors for reduced downstream workup was the use of 3DT and follow up mammogram at least 6 months after radiation (P 0.05) Conclusions: Excess workup was reduced with 3DT compared to 2DM in the post treatment setting. A single 3DT costs approximately 34% more than 2DM, however in this study the associated reduction in downstream workup with 3DT actually made it more cost effective.", "corpus_id": 190866823, "venue": "Journal of Clinical Oncology", "year": 2019, "author_names": [ "Shaakir Hasan", "Steven Gresswell", "Brittany Colosimo", "Kevin Weinberger", "Sidney Anderson", "Matthew Bigbey", "Rodney E Wegner", "Betty E Shindel", "Thomas B Julian", "Mark G Trombetta" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "211194132", "title": "A Low Complex SVD Based F OFDM", "abstract": "As an approach to reduce the computational complexity of Filtered Orthogonal Frequency Division Multiplexing (F OFDM) we removed restrictions on filter lengths in F OFDM and then applied linear pre and post processing for a transmitter and receiver using the singular value decomposition (SVD) method in order to solve the data distortion caused by the use of filter lengths much shorter than the symbol duration. This new F OFDM has been given the designation SVD based F OFDM (SF OFDM) Numerical results show that SF OFDM has much lower complexity than F OFDM, especially when transmitting small numbers of resource blocks. SF OFDM also has nearly the same bit error rate performance as conventional F OFDM. Moreover, SF OFDM retains a much lower out of band emission than cyclic prefix (CP) OFDM, while at the same time having a similar level of peak to average power ratio compared to CP OFDM.", "corpus_id": 211194132, "venue": "IEEE Transactions on Wireless Communications", "year": 2020, "author_names": [ "Hyejin Kim", "Yosub Park", "Jintae Kim", "Daesik Hong" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "229610544", "title": "Uplink Interference Analysis of F OFDM Systems Under Non Ideal Synchronization", "abstract": "Filtered orthogonal frequency division multiplexing (f OFDM) is considered one of the candidates for future mobile communication because of its flexible parameter configuration for different scenarios. However, the interference analysis of f OFDM is considerably challenging due to its special transceiver structure, especially in the uplink with non ideal synchronization. The uplink interference of f OFDM systems under non ideal synchronization, in which carrier frequency offset (CFO) and timing offset (TO) of multiple user equipment (UE) are considered, is investigated in this study. The interference is classified into several sub interferences. The closed form expressions of each sub interference and its variance are first derived, and then verified via simulations. On the basis of the derived closed form expressions, first, the influences of non ideal factors and system parameters, such as CFO, TO, guard band (GB) and subcarrier spacing (SCS) on the uplink interference of f OFDM systems, are simulated and analyzed. This study is verified by computer simulations, and the theoretical derivation of interference agrees with the simulation result. Second, Hanning window filters are employed by previous f OFDM systems, resulting in bit error rate (BER) imbalance between sub bands. Hence, the effect of waveform filter on the interference and BER is also investigated in this research. Results indicate that better interference and BER performances than Hanning window filters can be obtained by employing reasonable filter settings. Furthermore, several filter design rules are concluded. Overall, the analysis and simulations reveal many intrinsic interference characteristics of f OFDM, which will benefit the future f OFDM system designs.", "corpus_id": 229610544, "venue": "IEEE Transactions on Vehicular Technology", "year": 2020, "author_names": [ "Hao Chen", "Jingyu Hua", "Jiangang Wen", "Kai Zhou", "Jiamin Li", "Dongming Wang", "Xiaohu You" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "218973469", "title": "Resource Allocation in f OFDM Wireless Networks with Delay Estimation Using Service Curve and Envelope Process", "abstract": "In this paper, a resource allocation algorithm for wireless communication systems is proposed, which considers the channel transmission quality and data delay. In the proposed approach, the delay value is estimated to decide on the allocation of available radio resources, aiming to reduce the system's average delay. For the delay estimation, an approach involving concepts of Network Calculus such as service curve and envelope process MFBAP (Multifractal Bounded Arrival Process) is proposed. In view of the recent techniques for 5G communication systems, f OFDM (filtered Orthogonal Frequency Division Multiplexing) technology is also considered in our simulation scenarios. Simulations are carried out to compare the performance of the resource allocation algorithms in terms of QoS (Quality of Service) parameters such as average delay, throughput, processing time, loss rate and fairness index, proving the efficiency of the proposed algorithm.", "corpus_id": 218973469, "venue": "IEEE Latin America Transactions", "year": 2020, "author_names": [ "Marcus Vinicius Gonzaga Ferreira", "Flavio Henrique Teles Vieira" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "228091212", "title": "A new hybrid approach for reducing the high PAPR in OFDM and F OFDM systems with low complexity", "abstract": "The large (peak to average power ratio (PAPR) phenomenon is a downside in filtered multiplexing of the orthogonal frequency division (F OFDM Beyond 5G candidate) because of the nonlinearity design of the transmitter. Recently, several hybrid approaches have been implemented to minimize the high value of PAPR, at the expense of increasing the level of computational complexity in the system. In this paper, a new hybrid approach has been introduced throughout parallel to combine the approach of selective mapping (SLM) with the approach of partial transmit sequence (PTS) with (CSS) to improve the efficiency of PAPR reduction with lower complexity in numerical methods. The results indicate that the F OFDM systems with the proposed hybrid method have superior performance compared to existing hybrid methods in terms of PAPR reduction, side information, and computational complexity. Furthermore, a new hybrid approach suggested preserving the BER and PSD efficiency without deterioration.", "corpus_id": 228091212, "venue": "2020 2nd Al Noor International Conference for Science and Technology (NICST)", "year": 2020, "author_names": [ "Mohammed Abdullah Hussein", "Ali Kareem Nahar", "Alaa Hussein Ali" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "232105375", "title": "Research on F OFDM Subband Filter Algorithm for Three Major 5G Application Scenarios", "abstract": "With the proposal of three major 5G (5th generation wireless systems) application scenarios, the first NR (New Radio) specification version of 3GPP (3rd Generation Partnership Project) NR Release 15 was released in June 2018. The waveform technology in this version continues to use CP OFDM (Cyclic Prefixed Orthogonal Frequency Division Multiplexing) of LTE, mainly for eMBB (Enhanced Mobile Broadband) F OFDM (Filtered Orthogonal Frequency Division Multiplexing) which has been used as a candidate waveform technology for 5G, still has a large development space in performance optimization. In this paper, algorithm research and design are carried out for F OFDM subband filter in three 5G application scenarios. Through MATLAB simulation results show that compared with the corresponding scenario of OFDM, the tri subband F OFDM system matched with the subband filter respectively can not only suppress the out of band emission, improving the spectrum utilization and the performance of asynchronous transmission, but also improve the bit error rate and the reliability of the system.", "corpus_id": 232105375, "venue": "ICVISP", "year": 2020, "author_names": [ "Yong Chen", "Yuwen Wang", "Haolong Wu" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "219733588", "title": "Resource Allocation in f OFDM Wireless Networks with Delay Estimation Using Service Curve and Envelope Process", "abstract": "In this paper, a resource allocation algorithm for wireless communication systems is proposed, which considers the channel transmission quality and data delay. In the proposed approach, the delay value is estimated to decide on the allocation of available radio resources, aiming to reduce the system's average delay. For the delay estimation, an approach involving concepts of Network Calculus such as service curve and envelope process MFBAP (Multifractal Bounded Arrival Process) is proposed. In view of the recent techniques for 5G communication systems, f OFDM (filtered Orthogonal Frequency Division Multiplexing) technology is also considered in our simulation scenarios. Simulations are carried out to compare the performance of the resource allocation algorithms in terms of QoS (Quality of Service) parameters such as average delay, throughput, processing time, loss rate and fairness index, proving the efficiency of the proposed algorithm.", "corpus_id": 219733588, "venue": "", "year": 2020, "author_names": [ "Marcus Vinicius Gonzaga Ferreira", "Flavio Henrique Teles Vieira" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "225134251", "title": "UFMC and f OFDM: Contender Waveforms of 5G Wireless Communication System", "abstract": "Because of the increased demand for high data rates, looking for using new technologies that meet these requirements are considered a necessary. Hence, Fifth Generation (5G) is expected to be impressive in offering these requirements and implement around 2020. Orthogonal Frequency Division Multiplexing (OFDM) is considered a main technology of LTE wireless communication standards. Due to its suffering from high Bit Error Rate (BER) and Peak Average Power Ratio (PAPR) OFDM doesn't consider as charming solution for future wireless communications and several emerging applications of 5G. Moreover, high Out of Band Emission (OOBE) and inability of supporting the flexible numerology are other demerits of OFDM systems. Thus, looking for alternative waveforms which have the ability of solving OFDM disadvantages are necessary to introduce it as contender candidate for 5G wireless communication systems. In this paper, both of Filtered OFDM (f OFDM) and Universal Filtered Multi carrier (UFMC) systems have been discussed for 5G wireless communication systems and compared to OFDM system. The results showed that f OFDM system is better than both OFDM and UFMC systems and could be introducing as competitive candidate for 5G wireless communication systems because of its ability of reducing OOBE and enhancing BER performance.", "corpus_id": 225134251, "venue": "", "year": 2020, "author_names": [ "Ghasan Ali Hussain", "Lukman Audah" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "231684647", "title": "Performance Analysis of OFDM, W OFDM and F OFDM Under Rayleigh Fading Channel for 5G Wireless Communication", "abstract": "The OFDM multiple carrier modulations are more secure and suitable for a special fading that is known as a frequency selective fading. To minimize the queue in the 5G waveform, it is likewise much important to resize the bandwidth in the OFDM based technology. Consequently, Filtered Orthogonal Frequency Division Multiplexing also known as a spectrally localized waveform technology which is the primary approach. Windowed OFDM (W OFDM) where each symbol is categorized by windowed and every symbol is overlapped in the special time domain that is known as the classical OFDM scheme. The traffic scenario is processed by the individual sub bands. This article presents the comparison of the performance analysis of OFDM, W OFDM, and F OFDM systems using BPSK, QAM, 16 PSK, 8 QAM, QPSK, and 16 QAM modulation techniques under Rayleigh fading channel. The main aim of this article is to focus on examining the effective performance of OFDM, W OFDM, and F OFDM in terms of PSD, Bit error rate, and signal to noise ratio. The simulated values are analyzed in terms of PSD and BER.", "corpus_id": 231684647, "venue": "2020 3rd International Conference on Intelligent Sustainable Systems (ICISS)", "year": 2020, "author_names": [ "Md Hasan Mahmud", "Md Maruf Hossain", "Abid Anjum Khan", "Shanjid Ahmed", "Mirza Abir Mahmud", "MD Hafizul islam" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "228097722", "title": "Resource Virtualization and Allocation for TDD F OFDM Systems With MU MIMO", "abstract": "Wireless resource virtualization scheme has been proposed to satisfy the quality of service (QoS) requirement of multi service traffic flows on multi dimensional resources. However, it is a challenge to design an appropriate virtual resource allocation strategy for multi dimensional resource to meet the delay demand of multi service. In this paper, we study the virtual resource allocation method in TDD F OFDM system with MU MIMO and formulate the multi service virtual resource optimization problem as a cross layer problem. Then, we develop an effective dynamic algorithm with an iterative dual update to meet the optimization targets of the Media Access Control (MAC) layer and physical layer. Finally, the simulation results show that our proposed virtual resource allocation algorithm not only achieves better spectral efficiency and flow access ratio, but also guarantees the delay requirements of multi service flows.", "corpus_id": 228097722, "venue": "IEEE Access", "year": 2020, "author_names": [ "Baoguo Yu", "Yachuan Bao", "Kexin Cheng", "Ru-Shan Chen", "Xiaofeng Lu" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "221941353", "title": "A Unified Spectrum Formulation for OFDM, FBMC, and F OFDM", "abstract": "Although orthogonal frequency division multiplexing (OFDM) has been standardized for 5G, filter bank multi carrier (FBMC) and filtered orthogonal frequency division multiplexing (F OFDM) remain competitive as candidates for future generations of wireless technologies beyond 5G, due to their reduced spectrum leakage and thus enhanced spectrum efficiency. In this article, we developed a unified spectrum expression for OFDM, FBMC, and F OFDM, which provides comparative insights into those techniques. A representative sideband quantification is included at the end of this article.", "corpus_id": 221941353, "venue": "", "year": 2020, "author_names": [ "Xianzhen Yang", "Siyuan Yan", "Xiao Li", "Fu Li" ], "n_citations": 1, "n_key_citations": 0, "score": 1 } ]

[ { "doc_id": "201262824", "title": "PENGARUH GAYA KEPEMIMPINAN PARTISIPATIF DAN KOMPENSASI NON FINANSIAL TERHADAP KINERJA KARYAWAN BANK DI KOTA BANDA ACEH DENGAN MOTIVASI KERJA SEBAGAI VARIABEL MEDIASI", "abstract": "ABSTRAK tujuan utama adalah untuk meneliti pengaruh gaya kepemimpinan partisipatif, Kompensasi Non Finansial, Motivasi Karyawan pada serta dampaknya secara simultan terhadap kinerja karyawan Perbankan di Kota Banda Aceh. penelitian ini dilaksanakan pada Perbankan di Kota Banda Aceh. sebagai objek dari penelitian ini adalah Gaya kepemimpinan partisipatif, Kompensasi Non Finansial, Motivasi Karyawan dan kinerja karyawan. Subjek dari penelitian ini adalah karyawan Perbankan di Kota Banda. Populasi dalam penelitian ini adalah seluruh karyawan Perbankan di Kota Banda. Pengambilan sampel dengan metode perkalian indikator dengan angka 5. Hasil perhitungan sampel menjadi 180 orang. Hasil penelitian menunjukkan bahwa dari 5 hipotesis langsung hanya 1 hipotesis yakni hipotesis no.4 yang tidak diterima yakni pengaruh gaya kepemimpinan terhadap kinerja karyawan. Hasilpengujian hipotesis tidak langsung, motivasi dalam hal ini perannya partial mediating. Dari hasil temuan penelitian ini, terbukti motivasi kerja yang memiliki angka koefisien beta terbesar yang dapat digambarkan sebagai pemicu terbesar dalam mendorong peningkatan kinerja karyawan dibandingkan variabel lainnya karena motivasi memiliki nilai beta terbesar. Oleh sebab itu bila kinerja karyawan menjadi concern utama untuk ditingkatkan, maka harus dilakukan melalui peningkatan motivasi kerja karyawan yang lebih baik, lebih adil dan transparan sehingga dapat memicu meningkatnya kinerja karyawan Perbankan di Banda Aceh ini. Kata Kunci Gaya kepemimpinan partisipatif, Kompensasi Non Finansial, Motivasi Karyawan, kinerja karyawan Perbankan di Kota Banda Aceh", "corpus_id": 201262824, "venue": "", "year": 2019, "author_names": [ "Tia Diana" ], "n_citations": 1, "n_key_citations": 0, "score": 2 }, { "doc_id": "126730975", "title": "PENGARUH KOMPENSASI, MOTIVASI KERJA, KEPUASAN KERJA DAN LINGKUNGAN KERJA TERHADAP KINERJA KARYAWAN (STUDI KASUS PADA PT.PLN (PERSERO) UPT PADANG)", "abstract": "Penelitian ini bertujuan untuk mengetahui seberapa besar Pengaruh Kompensasi, Motivasi, Kepuasan Kerja dan Lingkungan Kerja Terhadap Kinerja Karyawan (Studi Kasus Pada PT.PLN (Persero) UPT Padang) Metode pengumpulan data melalui survey dan mengedarkan kuisioner, dengan sampel 40 responden. Metode analisis yang digunakan adalah analisis regresi linear berganda dengan alat bantu spss versi 21.0. Hasil penelitian yang didapatkan berdasarkan Uji Parsial (Uji t) diperoleh (a) terdapat pengaruh yang signifikan antara Kompensasi terhadap Kinerja Karyawan, dibuktikan dengan tingkat signifikan (0,009 0,05) Kemudian berdasarkan uji hipotesis secara simultan (Uji F) terdapat pengaruh yang signifikan antara Kompensasi, Motivasi, Kepuasan Kerja dan Lingkungan Kerja dengan tingkat siginifikan (0,000 0,05. Kontribusi variabel Kompensasi, Motivasi, Kepuasan Kerja dan Lingkungan Kerja adalah sebesar 0,364 atau 36,4% sedangkan 63,6% dipengaruhi oleh variable lain diluarpenelitian ini.", "corpus_id": 126730975, "venue": "", "year": 2019, "author_names": [ "Lina Yulita" ], "n_citations": 1, "n_key_citations": 0, "score": 2 }, { "doc_id": "237189507", "title": "PENGARUH KOMPENSASI, MOTIVASI DAN KOMITMEN ORGANISASI TERHADAP KINERJA KARYAWAN PT. ANDIRA AGRO DI KABUPATEN BANYUASIN", "abstract": "ABSTRAK Yayuk Eka Saputri/212014132/Pengaruh Kompensasi,Motivasi dan Komitmen Organisasi Terhadap Kinerja Karyawan PT. Andira Agro. Rumusan masalah dalam penelitian ini adalah adakah pengaruh kompensasi, motivasi dan komitmen organisasi terhadap kinerja karyawan di PT Andira Agro. Penelitian ini bertujuan untuk mengetahui pengaruh kompensasi, motivasi dan komitmen organisasi terhadap kinerja karyawan di PT Andira Agro. Penelitian ini menggunakan metode penelitian asosiatif. Populasi yang digunakan dalam penelitian ini adalah seluruh karyawan tetap yang ada di lapagan di PT Andira Agro tahun 2018 yaitu sebanyak 130 orang. Sampel yang digunakan dalam penelitian ini adalah 95 orang. Metode pengambilan sampel dalam penelitian ini adalah probability sampling dengan teknik proportionate stratified random sampling. Data yang digunakan dalam penelitian ini adalah data primer. Metode penggumpulan data dalam penelitian ini adalah kuisioner. Analisis data yang digunakan dalam penelitian ini adalah analisis kualitatif dan kuantitatif. Teknik analisi yang digunakan dalam penelitian ini adalah teknik analisis Regregi Linier Berganda dengan koefisien determinasi (R2) uji F dan uji t. Koefisien detrminasi (R2) yang diperoleh sebesar 0,626 (62,6% Hasil penelitian menunjukkan bahwa (1) variabel kompensasi berpengaruh secara signifikan terhadap kinerja karyawan dengan nilai thitung 7,022 ttabel 1,986,(2) tidak ada pengaruh secara signifikan dari variabel motivasi terhadap kinerja karyawan dengan nilai thitung 0,568 ttabel 1,986. Hasil Fhitung 53,376 Ftabel 2,70 menunjukkan bahwa ada pengaruh yang signifikan antara variabel kompensasi, motivasi dan komitmen organisasi secara simultan terhadap kinerja karyawan Kata kunci Kompensasi, Motivasi, Komitmen Organisasi Kinerja Karyawan.", "corpus_id": 237189507, "venue": "", "year": 2019, "author_names": [ "Yayuk Eka Saputri" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "211752254", "title": "DAMPAK PEMBERIAN KOMPENSASI, KEPUASAN KERJA MOTIVASI DAN PENGARUHNYA TERHADAP KINERJA KARYAWAN (STUDI PADA KARYAWAN PT NUSANTARA INFRASTRUCTURE TBK JAKARTA)", "abstract": "ABSTRACT This research aims to analyze the effect of compensation, employee satisfaction and work motivation on employee performance in PT Nusantara Infrastructure Tbk The object of this research are employees of the company PT Nusantara Infrastructure Tbk, located in Jakarta. The research was conducted to 60 staff members as respondents with saturated technique sampling uses. Multiple regression analysis was used in this research. The result found that compensation has a positive and significant effect to employee performance, and employee satisfaction and motivation they have positive but not significant effect to the employee performance. Keywords: Compensation, Employee Satisfaction, Work Motivation, Employee Performance, PT Nusantara Infrastructure Tbk Jakarta. ABSTRAK Penelitian ini bertujuan untuk menganalisis hubungan antara variabel kompensasi, kepuasan kerja dan motivasi terhadap kinerja karyawan pada PT Nusantara Infrastructure Tbk Jakarta. Teknik sampel jenuh digunakan pada 60 orang karyawan sebagai responden yang diteliti. Penelitian menggunakan pendekatan analisis regresi linier berganda. Hasil dari penelitian ini menunjukkan variabel kompensasi memiliki pengaruh positif dan signifikan terhadap kinerja karyawan, sedangkan variabel kepuasan kerja dan motivasi memiliki pengaruh positif tetapi tidak signifikan terhadap kinerja karyawan. Kata kunci: Kompensasi, Kepuasan Kerja, Motivasi, PT Nusantara Infrastructure Tbk Jakarta.", "corpus_id": 211752254, "venue": "", "year": 2019, "author_names": [ "Didin Hikmah Perkasa", "", "Abdul Ajis" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "182632559", "title": "PENGARUH KOMPENSASI, MOTIVASI, DAN LINGKUNGAN KERJA TERHADAP KINERJA KARYAWAN PADA HYPERMART PONOROGO", "abstract": "Penelitian ini bertujuan untuk mengetahui pengaruh Kompensasi, Motivasi, dan Lingkungan Kerja terhadap Kinerja Karyawan pada Hypermart Ponorogo. Metode ini menggunakan metode kuantitatif dengan menggunakan data primer yang diperoleh dari penyebaran kuisioner, wawancara, observasi dan data sekunder yang diperoleh dari Hypermart Ponorogo. Populasi dalam penelitian ini adalah karyawan yang berjumlah 49 orang. Sampel yang digunakan adalah sampling jenuh dan diperoleh 49 karyawan. Teknik analisa data yang digunakan regresi linier berganda. Hasil dari penelitian ini menunjukan bahwa 1. Kompensasi berpengaruh terhadap kinerja karyawan, 2. Motivasi berpengaruh terhadap kinerja karyawan, 3. Lingkungan Kerja berpengaruh terhadap kinerja karyawan, 4. Kompensasi, Motivasi, dan Lingkungan Kerja berpengaruh terhadap kinerja karyawam, 5. Koefisien determinasi menunjukkan bahwa variabel independen dan dependen kuat, 6. Koefisien determinasi menunjukkan bahwa variabel independen menjelaskan variabel dependen sebesar 57.7% dan sisanya dijelaskan oleh variabel yang tidak diteliti. Kata kunci Kompensasi, Motivasi, Lingkungan Kerja, Kinerja Karyawan", "corpus_id": 182632559, "venue": "", "year": 2019, "author_names": [ "Puspita Yulia" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "214111841", "title": "PENGARUH KEPEMIMPINAN, MOTIVASI KERJA, DAN KOMPENSASI TERHADAP KINERJA KARYAWAN PT. TAKAMORI INDONESIA BATAM", "abstract": "Penelitian ini bertujuan untuk mengetahui secara empiris pengaruh kepemimpinan, motivasi kerja, dan kompensasi secara parsial maupun secara simultan terhadap kinerja karyawan PT. Takamori Indonesia Batam, dengan populasi 142 orang karyawan dan jumlah sampel 63 orang responden. Jumlah sampel diperoleh berdasarkan rumus Slovin T aro Yamane dengan teknik sampling purposive. Data yang diperoleh dianalis is menggunakan analisis regesi linier berganda untuk menguji pengaruh kepemimpinan, motivasi, dan kompensasi terhadap kinerja karyawan. Dari hasil uji t, kepemimpinan berpengaruh tidak signifikan terhadap kinerja karyawan dengan nilai t hitung 1,465 0,05. Motivasi berpengaruh signifikan terhadap kinerja karyawan dengan nilai t hitung 2,200 2,001 t tabel dengan nilai signifikansi 0,031 2,001 t tabel, dengan nilai signifikansi 0,000 2,117 F tabel dengan nilai signifikansi 0,002 0,05.", "corpus_id": 214111841, "venue": "", "year": 2019, "author_names": [ "Taufik Ismail Sitompul", "Sri langgeng Ratnasari" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "126973079", "title": "ANALISIS PENGARUH KOMPETENSI, KOMPENSASI, DAN BEBAN KERJA TERHADAP KINERJA KARYAWAN DENGAN MOTIVASI SEBAGAI VARIABEL INTERVENING PT BANK SYARIAH MANDIRI KCP KARTASURA", "abstract": "ABSTRAK Susilowati, Nurma. 2018. Analisis Pengaruh Kompetensi, Kompensasi dan Beban kerja terhadap kinerja karyawan BSM KCP Kartasura dengan motivasi kerja sebagai variabel intervening tahun 2018 Skripsi, Fakultas Ekonomi dan Bisnis Islam. Program studi S1 Perbankan Syariah. Institut Agama Islam Negeri Salatiga. Dosen Pembimbing Dr. Ahmad Mifdhol Muthohar, Lc. M.S.I. Penelitian ini bertujuan untuk menguji (1) Pengaruh kompetensi terhadap kinerja karyawan (2) Pengaruh kompensasi terhadap kinerja karyawan (3) Pengaruh beban kerja terhadap kinerja karyawan (4) Pengaruh motivasi kerja terhadap kinerja karyawan (5) Pengaruh kompetensi terhadap kinerja karyawan melalui motivasi kerja sebagai variabel intervening (6) Pengaruh kompensasi terhadap kinerja karyawan melalui motivasi kerja sebagai variabel intervening (7) Pengaruh beban kerja terhadap kinerja karyawan melalui motivasi kerja sebagai variabel intervening. Penelitian ini adalah penelitian kuntitatif menggunakan data primer, populasi dalam penelitian ini adalah seluruh karyawan BSM KCP Kartasura pada tahun 2018. Tehnik pengambilan sampel dalam penelitian ini adalah sampel jenuh, yaitu teknik penentuan sampel bila semua anggota populasi digunakan sebagai sampel. Hal ini sering dilakukan bila jumlah populasi relatif kecil. Istilah lain dari sampel jenuh adalah sensus, dimana semua anggota populasi dijadikan sebagai sampel. Metode pengumpulan data dilakukan melalui kuesioner yang disebarkan kepada karyawan BSM KCP Kartasura pada tahun 2018. Data yang diperoleh kemudian diolah dengan menggunakan alat bantu SPSS versi 22. Analisis ini meliputi uji reliabilitas, uji validitas, uji statistik melalui uji ttes, Ftes serta koefisien determinan (R2) uji asumsi klasik dan uji Path Analysis. Hasil Uji Ttes menunjukkan bahwa secara parsial variabel kompensasi, kompensasi, beban kerja dan motivasi berpengaruh positif dan signifikan terhadap kinerja karyawan. Dari hasil uji Path menunjukkan bahwa Kompetensi dan beban kerja berpengaruh positif dan signifikan terhadap kinerja karyawan dengan motivasi kerjasebagai variabel intervening. Sedangkan kompensasi berpengaruh negatif tidak signifikan terhadap kinerja karyawan dengan motivasi kerja sebagai variabel intervening. Kata kunci Kompetensi, Kompensasi, Beban Kerja, Motivasi, Kinerja", "corpus_id": 126973079, "venue": "", "year": 2019, "author_names": [ "Nurmala Susilowati" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "149627301", "title": "KEPEMIMPINAN DAN KOMPENSASI PENGARUHNYA TERHADAP MOTIVASI KERJA SERTA IMPLIKASINYA PADA KINERJA KARYAWAN KOPERASI SIMPAN PINJAM DI KOTA PALEMBANG", "abstract": "Penelitian ini bertujuan untuk mengkaji Pengaruh Kepemimpinan dan Kompensasi Terhadap Motivasi Kerja Serta Implikasinya Pada Kinerja Karyawan Koperasi Simpan Pinjamdi Kota Palembang. Penelitian dilakukanA terhadap 100 respondent dari populasi 130 Karyawan. Uji kuesioner juga dilakukan terhadap 30 respondent sebelum penelitian dilakukan. Analisis data penelitian menggunakan metode statistik deskriptif dan inferensial.A Model analisis menggunakan Structural Equation Model (SEM) dengan komposisi Sub struktur Kepemimpinan dan Kompensasi sebagai variabel eksogen dan Motivasi Kerja sebagai variabel endogen. Struktur terdiri dari: Kepemimpinan, Kompensasi dan Motivasi Kerja sebagai variabel eksogen dan Kinerja sebagai variabel endogen.Hasil Penelitian menunjukan (1) padasub struktur pertama bahwaKepemimpinan dan Kompensasi secara bersama sama berpengaruh positif dan signifikan terhadap motivasi kerja Karyawan Koperasi Simpan Pinjamdi Kota Palembang, namun secara parsial hanya kepemimpinan yang berpengaruh positif dansignifikan (2) pada struktur utama bahwa kepemimpinan, kompensasi dan motivasi kerja secara bersama sama maupun secara parsial berpengaruh positif dan signifikan terhadap kinerja.Dari hasil analisisA pengaruh langsung, maupun tidak langsungA dapat disimpulkan bahwa untuk meningkatkan kinerja. variable kompensasi memiliki efek langsung yang lebih dominan dari pada melalui variabel motivasi kerja, sebaliknya variabel kepemimpinan memiliki efek tidak langsung yang lebih dominan dalam mempengaruhi variabel kinerja, yaitu harus melalui variabel motivasi kerja", "corpus_id": 149627301, "venue": "", "year": 2019, "author_names": [ "Yohanes Susanto" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "199681691", "title": "PENGARUH KOMPENSASI, MOTIVASI DAN LINGKUNGAN KERJA TERHADAP KINERJA KARYAWAN UMKM PRODUKSI KRIPIK TEMPE DI SANAN KOTA MALANG", "abstract": "Penelitian ini bertujuan untuk menganalisis pengaruh kompensasi terhadap kinerja karyawan pada UMKM Produksi Kripik Tempe di Sanan Kota Malang, menganalisis pengaruh motivasi kerja terhadap kinerja karyawan pada UMKM Produksi Kripik Tempe di Sanan Kota Malang, menganalisis pengaruh lingkungan kerja terhadap kinerja karyawan pada UMKM Produksi Kripik Tempe di Sanan Kota Malang dan untuk menganalisis diantara kompensasi, motivasi dan lingkungan kerja yang berpengaruh dominan terhadap kinerja karyawan UMKM Produksi Kripik Tempe di Sanan Kota Malang. Penelitian yang dilakukan merupakan penelitian explanatory karena penelitian ini adalah untuk menjelaskan pengaruh hubungan kausal antara variabel variabel penelitian melalui pengujian hipotesis. Penelitian ini menggunakan sampel sebanyak 76 orang yang merupakan karyawan UMKM produksi keripik tempe di kelurahan Sanan kota Malang dengan teknik pengambilan sampel non probability sample. Alat analisis yang digunakan adalah uji instrument dan regresi linier berganda. Hasil penelitian diketahui bahwa Kompensasi berpengaruh signifikan terhadap kinerja karyawan UMKM Produksi Kripik Tempe di Sanan Kota Malang. Motivasi kerja berpengaruh signifikan terhadap kinerja karyawan UMKM Produksi Kripik Tempe di Sanan Kota Malang Lingkungan kerja berpengaruh signifikan terhadap kinerja karyawan UMKM Produksi Kripik Tempe di Sanan Kota Malang. Kompensasi berpengaruh dominan terhadap kinerja karyawan UMKM Produksi Kripik Tempe di Sanan Kota Malang dibandingkan motivasi kerja dan lingkungan kerja Kata kunci: Kompensasi, motivasi kerja, lingkungan kerja, kinerja karyawan", "corpus_id": 199681691, "venue": "", "year": 2019, "author_names": [ "Lutfi Tri Hartanto" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "232948694", "title": "PENGARUH KOMPENSASI, MOTIVASI DAN ORGANIZATIONAL CITIZENSHIP BEHAVIOR TERHADAP KINERJA KARYAWAN (STUDI KASUS PADA CV ANZHA SINAR MULIA DESA WONOREJO KECAMATAN KARANGANYAR KABUPATEN DEMAK)", "abstract": "Persaingan antar perusahaan di era globalisasi semakin tajam, sehingga menuntut adanya sumber daya manusia yang mampu mengembangkan diri secara proaktif. Pengembangan sumber daya manusia akan dapat meningkatkan kinerja sehingga tujuan dari perusahaan akan tercapai. Untuk mencapai kinerja karyawan yang tinggi ada beberapa faktor yang dapat mempengaruhinya. Penelitian ini bertujuan untuk mengetahui pengaruh dari kompensasi, motivasi dan organizational citizenship behavior terhadap kinerja karyawan pada CV Anzha Sinar Mulia Demak. Jenis penelitian ini adalah ex postfacto (data hasil peristiwa yang sudah berlangsung) dapat juga disebut kausal komparatif (mengetahui kemungkinan adanya hubungan sebab akibat) dengan pendekatan penelitian kuantitatif. Populasi dalam penelitian ini berjumlah 328 dimana sampel yang ditetapkan berdasarkan rumus Slovin berjumlah 180 dengan metode random sampling. Metode pengumpulan data dengan metode angket, Teknik analisis data meliputi analisis regresi berganda, Uji t, Uji F dan koefesien determinasi yang terlebih dahulu dilakukan uji normalitas, uji multikolonieritas, uji heteroskedastisitas dan uji autokorelasi. Hasil penelitian menunjukkan bahwa terdapat pengaruh antara kompensasi dengan kinerja karyawan Terlihat dari nilai koefisien sebesar 0,293 dengan t hitung 5,049 dari t tabel 1,654 dengan demikian hipotesis pertama diterima. Motivasi berpengaruh positif terhadap kinerja karyawan, Terlihat dari nilai koefisien sebesar 0,185 dengan t hitung 3,471 dari t tabel 1,654 dengan demikian hipotesis dua diterima dan Organizational citizenship behavior berpengaruh positif terhadap kinerja karyawan. Terlihat dari nilai koefisien sebesar 0,273 dengan t hitung 5,671 yang lebih besar dari t tabel 1,654 dengan demikian hipotesis tiga diterima.", "corpus_id": 232948694, "venue": "", "year": 2019, "author_names": [ "Sela Fatihatun Niswah" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "92233753", "title": "The influence of cell size on cytokinesis in situ and genomic interrogation of human cell size regulation", "abstract": "", "corpus_id": 92233753, "venue": "", "year": 2018, "author_names": [ "Karine G Bourdages" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "159041817", "title": "Magnetic resonance imaging of mean cell size in human breast tumors", "abstract": "Cell size is a fundamental characteristic of all tissues, and changes in cell size in cancer reflect tumor status and response to treatments, such as apoptosis and cell cycle arrest. Unfortunately, cell size can currently be obtained only by pathological evaluation of tumor tissue samples obtained invasively. Previous imaging approaches are limited to preclinical MRI scanners or require relatively long acquisition times that are impractical for clinical imaging. There is a need to develop cell size imaging for clinical applications.", "corpus_id": 159041817, "venue": "Magnetic resonance in medicine", "year": 2019, "author_names": [ "Junzhong Xu", "Xiaoyu Jiang", "Hua Li", "Lori R Arlinghaus", "Eliot T McKinley", "Sean P Devan", "Benjamin M Hardy", "Jingping Xie", "Hakmook Kang", "A Bapsi Chakravarthy", "John C Gore" ], "n_citations": 17, "n_key_citations": 0, "score": 1 }, { "doc_id": "25970286", "title": "Cell size dependent upregulation of HGF expression in dermal fibroblasts: Impact on human skin connective tissue aging.", "abstract": "BACKGROUND Aged human skin is primarily attributable to loss of collagen, the main structural component of skin. Hepatocyte growth factor (HGF) acts as an anti fibrotic factor by suppression of collagen production. It is not known whether HGF is involved in age related collagen deficit in human skin. OBJECTIVE The objective of this study was to investigate the expression of HGF in human skin, and the underlying mechanisms of age related elevation of HGF expression. METHODS The expression of HGF in young (25+ 5years, six subjects) and aged (75+ 6years, six subjects) human skin was determined by laser capture microdissection (LCM) coupled real time PCR and immunohistology. The underlying mechanisms of age related elevation of HGF were investigated by reducing dermal fibroblast size, which is a prominent feature of aged skin fibroblast in vivo. RESULTS HGF is predominantly expressed in human skin dermal fibroblasts, the major cells responsible for collagen production, and is significantly elevated in aged human skin in vivo. Mechanistically, reduced fibroblast size, which is a prominent feature of aged skin fibroblasts in vivo, is responsible for age related elevation of HGF expression. Cell size dependent upregulation of HGF expression is driven by increased c Jun and impaired TGF b signaling. Restoration of fibroblast size normalizes increased c Jun expression and impaired TGF b signaling, and thus reversed the elevated HGF expression. Finally, we confirmed that application of retinoid (ROL) which has been shown to improve aged human skin, significantly reduced elevated HGF mRNA expression in aged human skin in vivo (78+ 4years, six subjects) CONCLUSION These data reveal a novel mechanism by which reduction of fibroblast size upregulates HGF expression, which in turn contributes to loss of collagen, a prominent feature of aged skin.", "corpus_id": 25970286, "venue": "Journal of dermatological science", "year": 2017, "author_names": [ "Zhaoping Qin", "Christal A Worthen", "Taihao Quan" ], "n_citations": 13, "n_key_citations": 1, "score": 0 }, { "doc_id": "52982211", "title": "The Human Cell Atlas White Paper", "abstract": "The Human Cell Atlas (HCA) will be made up of comprehensive reference maps of all human cells the fundamental units of life as a basis for understanding fundamental human biological processes and diagnosing, monitoring, and treating disease. It will help scientists understand how genetic variants impact disease risk, define drug toxicities, discover better therapies, and advance regenerative medicine. A resource of such ambition and scale should be built in stages, increasing in size, breadth, and resolution as technologies develop and understanding deepens. We will therefore pursue Phase 1 as a suite of flagship projects in key tissues, systems, and organs. We will bring together experts in biology, medicine, genomics, technology development and computation (including data analysis, software engineering, and visualization) We will also need standardized experimental and computational methods that will allow us to compare diverse cell and tissue types and samples across human communities in consistent ways, ensuring that the resulting resource is truly global. This document, the first version of the HCA White Paper, was written by experts in the field with feedback and suggestions from the HCA community, gathered during recent international meetings. The White Paper, released at the close of this yearlong planning process, will be a living document that evolves as the HCA community provides additional feedback, as technological and computational advances are made, and as lessons are learned during the construction of the atlas.", "corpus_id": 52982211, "venue": "", "year": 2018, "author_names": [ "Aviv Regev", "Sarah A Teichmann", "Orit Rozenblatt-Rosen", "Michael J T Stubbington", "Kristin G Ardlie", "Ido Amit", "Paola Arlotta", "Gary D Bader", "Christophe Benoist", "Moshe Biton", "Bernd Bodenmiller", "Benoit G Bruneau", "Peter J Campbell", "Mary Carmichael", "Piero Carninci", "Leslie A Castelo-Soccio", "Menna R Clatworthy", "Hans Clevers", "Christian Conrad", "Roland Eils", "Jeremy Freeman", "Lars Fugger", "Berthold Goettgens", "Daniel B Graham", "Anna Greka", "Nir Hacohen", "Muzlifah A Haniffa", "Ingo Helbig", "Robert O Heuckeroth", "Sekar Kathiresan", "Seung Kim", "Allon M Klein", "Bartha Maria Knoppers", "Arnold R Kriegstein", "Eric S Lander", "Jane Jia Hui Lee", "Ed S Lein", "Sten Linnarsson", "Evan Z Macosko", "Sonya Macparland", "Robert C Majovski", "Partha P Majumder", "John C Marioni", "Ian D McGilvray", "Miriam Merad", "Musa M Mhlanga", "Shalin H Naik", "Martijn C Nawijn", "Garry P Nolan", "Benedict J Paten", "Dana Pe'er", "Anthony A Philippakis", "Chris Paul Ponting", "Stephen R Quake", "Jayaraj Rajagopal", "Nikolaus Rajewsky", "Wolf Reik", "Jennifer Rood", "Kourosh Saeb-Parsy", "Herbert B Schiller", "Steve Scott", "Alex K Shalek", "Ehud Y Shapiro", "Jay W Shin", "Kenneth D Skeldon", "Michael R Stratton", "Jenna L Streicher", "Hendrik G Stunnenberg", "Kai Tan", "Deanne M Taylor", "Adrian Thorogood", "Ludovic Vallier", "Alexander van Oudenaarden", "Fiona M Watt", "Wilko Weicher", "Jonathan S Weissman", "Andrew Wells", "Barbara J Wold", "Ramnik J Xavier", "Xiaowei Zhuang", "Human Cell Atlas Organizing Committee" ], "n_citations": 43, "n_key_citations": 4, "score": 0 }, { "doc_id": "73726701", "title": "MAP4K4 Inhibition Promotes Survival of Human Stem Cell Derived Cardiomyocytes and Reduces Infarct Size In Vivo", "abstract": "Summary Heart disease is a paramount cause of global death and disability. Although cardiomyocyte death plays a causal role and its suppression would be logical, no clinical counter measures target the responsible intracellular pathways. Therapeutic progress has been hampered by lack of preclinical human validation. Mitogen activated protein kinase kinase kinase kinase 4 (MAP4K4) is activated in failing human hearts and relevant rodent models. Using human induced pluripotent stem cell derived cardiomyocytes (hiPSC CMs) and MAP4K4 gene silencing, we demonstrate that death induced by oxidative stress requires MAP4K4. Consequently, we devised a small molecule inhibitor, DMX 5804, that rescues cell survival, mitochondrial function, and calcium cycling in hiPSC CMs. As proof of principle that drug discovery in hiPSC CMs may predict efficacy in vivo, DMX 5804 reduces ischemia reperfusion injury in mice by more than 50% We implicate MAP4K4 as a well posed target toward suppressing human cardiac cell death and highlight the utility of hiPSC CMs in drug discovery to enhance cardiomyocyte survival.", "corpus_id": 73726701, "venue": "Cell stem cell", "year": 2019, "author_names": [ "Lorna R Fiedler", "Kathryn L Chapman", "M Xie", "Evie Maifoshie", "Micaela Jenkins", "Pelin Arabacilar Golforoush", "Mohamed Bellahcene", "Michela Noseda", "Dorte Faust", "Ashley N Jarvis", "Gary Karl Newton", "Marta Abreu Paiva", "Mutsuo Harada", "Daniel J Stuckey", "Weihua Song", "Josef Habib", "Priyanka Narasimham", "Rehan Aqil", "Devika Sanmugalingam", "Robert Yan", "Lorenzo Pavanello", "Motoaki Sano", "Sam C Wang", "Robert D Sampson", "Sunthar Kanayaganam", "George E Taffet", "Lloyd H Michael", "Mark L Entman", "Tse-Hua Tan", "Sian E Harding", "Caroline Minli Rachel Low", "Catherine Tralau-Stewart", "Trevor Perrior", "Michael D Schneider" ], "n_citations": 30, "n_key_citations": 1, "score": 0 }, { "doc_id": "44122072", "title": "Cell size control and gene expression homeostasis in single cells.", "abstract": "Growth of a cell and its subsequent division into daughters is a fundamental aspect of all cellular living systems. During these processes, how do individual cells correct size aberrations so that they do not grow abnormally large or small? How do cells ensure that the concentration of essential gene products are maintained at desired levels, in spite of dynamic/stochastic changes in cell size during growth and division? Both these questions have fascinated researchers for over a century. We review how advances in singe cell technologies and measurements are providing unique insights into these questions across organisms from prokaryotes to human cells. More specifically, diverse strategies based on timing of cell cycle events, regulating growth, and number of daughters are employed to maintain cell size homeostasis. Interestingly, size homeostasis often results in size optimality proliferation of individual cells in a population is maximized at an optimal cell size. We further discuss how size dependent expression or gene replication timing can buffer concentration of a gene product from cell to cell size variations within a population. Finally, we speculate on an intriguing hypothesis that specific size control strategies may have evolved as a consequence of gene product concentration homeostasis.", "corpus_id": 44122072, "venue": "Current opinion in systems biology", "year": 2018, "author_names": [ "Cesar Vargas-Garcia", "Khem Raj Ghusinga", "Abhyudai Singh" ], "n_citations": 40, "n_key_citations": 0, "score": 0 }, { "doc_id": "49695104", "title": "Classification of Single Particles from Human Cell Extract Reveals Distinct Structures", "abstract": "SUMMARY Multi protein complexes are necessary for nearly all cellular processes, and understanding their structure is required for elucidating their function. Current high resolution strategies in structural biology are effective but lag behind other fields (e.g. genomics and proteomics) due to their reliance on purified samples rather than heterogeneous mixtures. Here, we present a method combining single particle analysis by electron microscopy with protein identification by mass spectrometry to structurally characterize macromolecular complexes from human cell extract. We identify HSP60 through two dimensional classification and obtain three dimensional structures of native proteasomes directly from ab initio classification of a heterogeneous mixture of protein complexes. In addition, we reveal an ~1 MDa size structure of unknown composition and reference our proteomics data to suggest possible identities. Our study shows the power of using a shotgun approach to electron microscopy (shotgun EM) when coupled with mass spectrometry as a tool to uncover the structures of macromolecular machines.", "corpus_id": 49695104, "venue": "Cell reports", "year": 2018, "author_names": [ "Eric J Verbeke", "Anna L Mallam", "Kevin Drew", "Edward M Marcotte", "David W Taylor" ], "n_citations": 19, "n_key_citations": 0, "score": 0 }, { "doc_id": "4678245", "title": "DEPDC5 and NPRL3 modulate cell size, filopodial outgrowth, and localization of mTOR in neural progenitor cells and neurons", "abstract": "Mutations in DEPDC5 and NPRL3 subunits of GATOR1, a modulator of mechanistic target of rapamycin (mTOR) are linked to malformations of cortical development (MCD) Brain specimens from these individuals reveal abnormal cortical lamination, altered cell morphology, and hyperphosphorylation of ribosomal S6 protein (PS6) a marker for mTOR activation. While numerous studies have examined GATOR1 subunit function in non neuronal cell lines, few have directly assessed loss of GATOR1 subunit function in neuronal cell types. We hypothesized that DEPDC5 or NPRL3 shRNA mediated knockdown (DEPDC5/NPRL3 KD) leads to inappropriate functional activation of mTOR and mTOR dependent alterations in neuronal morphology. Neuronal size was determined in human specimens harboring DEPDC5 or NPRL3 mutations resected for epilepsy treatment. DEPDC5/NPRL3 KD effects on cell size, filopodial extension, subcellular mTOR complex 1 (mTORC1) localization, and mTORC1 activation during nutrient deprivation were assayed in mouse neuroblastoma cells (N2aC) and mouse subventricular zone derived neural progenitor cells (mNPCs) mTORC1 dependent effects of DEPDC5/NPRL3 KD were determined using the mTOR inhibitor rapamycin. Changes in mTOR subcellular localization and mTORC1 pathway activation following DEPDC5/NPRL3 KD were determined by examining the proximity of mTOR to the lysosomal surface during amino acid starvation. Neurons exhibiting PS6 immunoreactivity (Ser 235/236) in human specimens were 1.5x larger than neurons in post mortem control samples. DEPDC5/NPRL3 KD caused mTORC1, but not mTORC2, hyperactivation, soma enlargement, and increased filopodia in N2aC and mNPCs compared with wildtype cells. DEPDC5/NPRL3 KD led to inappropriate mTOR localization at the lysosome along with constitutive mTOR activation following amino acid deprivation. DEPDC5/NPRL3 KD effects on morphology and functional mTOR activation were reversed by rapamycin. mTOR dependent effects of DEPDC5/NPRL3 KD on morphology and subcellular localization of mTOR in neurons suggests that loss of function in GATOR1 subunits may play a role in MCD formation during fetal brain development.", "corpus_id": 4678245, "venue": "Neurobiology of Disease", "year": 2018, "author_names": [ "Philip H Iffland", "Marianna Baybis", "Allan E Barnes", "Richard J Leventer", "Paul J Lockhart", "Peter B Crino" ], "n_citations": 15, "n_key_citations": 0, "score": 0 }, { "doc_id": "30741824", "title": "3D microniches reveal the importance of cell size and shape", "abstract": "Geometrical cues have been shown to alter gene expression and differentiation on 2D substrates. However, little is known about how geometrical cues affect cell function in 3D. One major reason for this lack of understanding is rooted in the difficulties of controlling cell geometry in a complex 3D setting and for long periods of culture. Here, we present a robust method to control cell volume and shape of individual human mesenchymal stem cells (hMSCs) inside 3D microniches with a range of different geometries (e.g. cylinder, triangular prism, cubic, and cuboid) We find that the actin filaments, focal adhesions, nuclear shape, YAP/TAZ localization, cell contractility, nuclear accumulation of histone deacetylase 3, and lineage selection are all sensitive to cell volume. Our 3D microniches enable fundamental studies on the impact of biophysical cues on cell fate, and have potential applications in investigating how multicellular architectures organize within geometrically well defined 3D spaces.Little is known about how geometric cues affect cell function and gene expression in 3D settings. Here the authors use microniches of different geometries to control cell volume and shape, and by extension cell phenotype and lineage.", "corpus_id": 30741824, "venue": "Nature Communications", "year": 2017, "author_names": [ "Min Bao", "Jing Xie", "Aigars Piruska", "Wilhelm T S Huck" ], "n_citations": 86, "n_key_citations": 1, "score": 1 }, { "doc_id": "51942494", "title": "Quantifying size and diversity of the human T cell alloresponse.", "abstract": "Alloreactive T lymphocytes are the primary mediators of immune responses in transplantation, both in the graft versus host and host versus graft directions. While essentially all clones comprising the human T cell repertoire have been selected on self peptide presented by self human leukocyte antigens (self HLAs) much remains to be understood about the nature of clones capable of responding to allo HLA molecules. Quantitative tools to study these cells are critical to understand fundamental features of this important response; however, the large size and diversity of the alloreactive T cell repertoire in humans presents a great technical challenge. We have developed a high throughput T cell receptor (TCR) sequencing approach to characterize the human alloresponse. We present a statistical method to model T cell clonal frequency distribution and quantify repertoire diversity. Using these approaches, we measured the diversity and frequency of distinct alloreactive CD4+ and CD8+ T cell populations in HLA mismatched responder stimulator pairs. Our findings indicate that the alloimmune repertoire is highly specific for a given pair of individuals, that most alloreactive clones circulate at low frequencies, and that a high proportion of TCRs is likely able to recognize alloantigens.", "corpus_id": 51942494, "venue": "JCI insight", "year": 2018, "author_names": [ "Susan Dewolf", "Boris Grinshpun", "Thomas M Savage", "Saiping Lau", "Aleksa Obradovic", "Brittany A Shonts", "Suxiao Yang", "Heather K Morris", "Julien Zuber", "Robert Winchester", "Megan Sykes", "Yufeng Shen" ], "n_citations": 31, "n_key_citations": 1, "score": 0 } ]

[ { "doc_id": "233004406", "title": "A Combined Deep Learning based End to End Video Coding Architecture for YUV Color Space", "abstract": "Most of the existing deep learning based end to end video coding (DLEC) architectures are designed specifically for RGB color format, yet the video coding standards, including H.264/AVC, H.265/HEVC and H.266/VVC developed over past few decades, have been designed primarily for YUV 4:2:0 format, where the chrominance (U and V) components are subsampled to achieve superior compression performances considering the human visual system. While a broad number of papers on DLEC compare these two distinct coding schemes in RGB domain, it is ideal to have a common evaluation framework in YUV 4:2:0 domain for a more fair comparison. This paper introduces a new DLEC architecture for video coding to effectively support YUV 4:2:0 and compares its performance against the HEVC standard under a common evaluation framework. The experimental results on YUV 4:2:0 video sequences show that the proposed architecture can outperform HEVC in intra frame coding, however inter frame coding is not as efficient on contrary to the RGB coding results reported in recent papers.", "corpus_id": 233004406, "venue": "ArXiv", "year": 2021, "author_names": [ "Ankitesh K Singh", "Hilmi E Egilmez", "Reza Pourreza", "Muhammed Z Coban", "Marta Karczewicz", "Taco Cohen" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "232092871", "title": "Transform Network Architectures for Deep Learning Based End to End Image/Video Coding in Subsampled Color Spaces", "abstract": "Most of the existing deep learning based end to end image/video coding (DLEC) architectures are designed for non subsampled RGB color format. However, in order to achieve a superior coding performance, many state of the art block based compression standards such as High Efficiency Video Coding (HEVC/H.265) and Versatile Video Coding (VVC/H.266) are designed primarily for YUV 4:2:0 format, where U and V components are subsampled by considering the human visual system. This paper investigates various DLEC designs to support YUV 4:2:0 format by comparing their performance against the main profiles of HEVC and VVC standards under a common evaluation framework. Moreover, a new transform network architecture is proposed to improve the efficiency of coding YUV 4:2:0 data. The experimental results on YUV 4:2:0 datasets show that the proposed architecture significantly outperforms naive extensions of existing architectures designed for RGB format and achieves about 10% average BD rate improvement over the intra frame coding in HEVC.", "corpus_id": 232092871, "venue": "IEEE Open Journal of Signal Processing", "year": 2021, "author_names": [ "Hilmi E Egilmez", "Ankitesh K Singh", "Muhammed Z Coban", "Marta Karczewicz", "Yinhao Zhu", "Yang Yang", "Amir Said", "Taco Cohen" ], "n_citations": 1, "n_key_citations": 1, "score": 2 }, { "doc_id": "1023366", "title": "Subband Decomposition for High Resolution Color in HEVC and AVC 4:2:0 Video Coding Systems", "abstract": "Summary form only given. High resolution color video (in 4:4:4 format) is becoming increasingly important for screen content and graphics. We have developed a frame packing arrangement (FPA) scheme that enables transmission of 4:4:4 luma chroma (YUV or YCoCg) content through conventional subsampled chroma (4:2:0) codecs as an approach for low cost support of 4:4:4 content. We focus on the \"band separation\" method initially discussed in [1] and evaluate new scenarios with the 4:4:4 and 4:2:0 versions at similar compression levels. We use the HEVC HM12.0 reference software for evaluating the FPA scheme. We vary the luma QP for the main 4:2:0 representation from 10 to 34, keeping the QP for the main frame's chroma and auxiliary frame's luma and chroma (containing three fourths of the 4:4:4 chroma data) at the same value as the luma QP. We then compare the final 4:4:4 chroma rate distortion performance of band separation, direct frame packing, and native HM 4:4:4 encoding. We also show preliminary results for lifting based band separation (with clipping) which eliminates the inherent rounding errors of other band separation filters and provides better rate distortion performance. Fig. 1 provides an example for a typical case of the new results showing that both the \"band separation\" and \"lifting based band separation\" approaches have much better performance than previously reported, and are significantly better than the earlier developed \"direct\" frame packing approach. Although the rate distortion performance is inferior to that of native HM 4:4:4 coding, the FPA scheme enables the use of existing 4:2:0 decoding hardware, thus allowing for considerable battery power savings in mobile devices. A more complete discussion and evaluation is available in [2]", "corpus_id": 1023366, "venue": "2014 Data Compression Conference", "year": 2014, "author_names": [ "Srinath Reddy", "Sandeep Kanumuri", "Yongjun Wu", "Shyam Sadhwani", "Gary J Sullivan", "Henrique S Malvar" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "71151167", "title": "Relocated I Frames Detection in H.264 Double Compressed Videos Based on Genetic CNN", "abstract": "Analyzing the appearance of Relocated I frames is a vital step in double compression detection in Group of Pictures (GOP) non aligned videos. In this work, a frame wise relocated I frames detection method in H.264 double compressed videos based on Genetic CNN is proposed. Video clips which contain three adjacent frames are used as the input of network to separate image content from noise. A preprocessing operation is adopted by extracting the noise residual. The genetic algorithm is applied to verify the possibility of automatically designing deep network structures. The network optimization operation mainly includes CNN encoding, initialization, the construction of fitness function and genetic operations, e.g. selection, mutation and crossover. By testing on a data set composed of published YUV sequences, the results clearly demonstrate the efficacy of the proposed approach and show that the generated CNN can achieve better performance than previous method investigated.", "corpus_id": 71151167, "venue": "2018 Asia Pacific Signal and Information Processing Association Annual Summit and Conference (APSIPA ASC)", "year": 2018, "author_names": [ "Qiang Xu", "Xinghao Jiang", "Tanfeng Sun", "Peisong He", "Shilin Wang", "Bin Li" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "54441811", "title": "DVC: An End To End Deep Video Compression Framework", "abstract": "Conventional video compression approaches use the predictive coding architecture and encode the corresponding motion information and residual information. In this paper, taking advantage of both classical architecture in the conventional video compression method and the powerful non linear representation ability of neural networks, we propose the first end to end video compression deep model that jointly optimizes all the components for video compression. Specifically, learning based optical flow estimation is utilized to obtain the motion information and reconstruct the current frames. Then we employ two auto encoder style neural networks to compress the corresponding motion and residual information. All the modules are jointly learned through a single loss function, in which they collaborate with each other by considering the trade off between reducing the number of compression bits and improving quality of the decoded video. Experimental results show that the proposed approach can outperform the widely used video coding standard H.264 in terms of PSNR and be even on par with the latest standard H.265 in terms of MS SSIM. Code is released at https:/github.com/GuoLusjtu/DVC.", "corpus_id": 54441811, "venue": "2019 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)", "year": 2019, "author_names": [ "Guo Lu", "Wanli Ouyang", "Dong Xu", "Xiaoyun Zhang", "Chunlei Cai", "Zhiyong Gao" ], "n_citations": 148, "n_key_citations": 35, "score": 0 }, { "doc_id": "221885073", "title": "High Quality Single Model Deep Video Compression with Frame Conv3D and Multi frame Differential Modulation", "abstract": "Deep learning (DL) methods have revolutionized the paradigm of computer vision tasks and DL based video compression is becoming a hot topic. This paper proposes a deep video compression method to simultaneously encode multiple frames with Frame Conv3D and differential modulation. We first adopt Frame Conv3D instead of traditional Channel Conv3D for efficient multi frame fusion. When generating the binary representation, the multi frame differential modulation is utilized to alleviate the effect of quantization noise. By analyzing the forward and backward computing flow of the modulator, we identify that this technique can make full use of past frames' information to remove the redundancy between multiple frames, thus achieves better performance. A dropout scheme combined with the differential modulator is proposed to enable bit rate optimization within a single model. Experimental results show that the proposed approach outperforms the H.264 and H.265 codecs in the region of low bit rate. Compared with recent DL based methods, our model also achieves competitive performance.", "corpus_id": 221885073, "venue": "ECCV", "year": 2020, "author_names": [ "Wenyu Sun", "Chen Tang", "Weigui Li", "Zhuqing Yuan", "Huazhong Yang", "Yongpan Liu" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "214713520", "title": "BVI DVC: A Training Database for Deep Video Compression", "abstract": "Deep learning methods are increasingly being applied in the optimisation of video compression algorithms and can achieve significantly enhanced coding gains, compared to conventional approaches. Such approaches often employ Convolutional Neural Networks (CNNs) which are trained on databases with relatively limited content coverage. In this paper, a new extensive and representative video database, BVI DVC, is presented for training CNN based video compression systems, with specific emphasis on machine learning tools that enhance conventional coding architectures, including spatial resolution and bit depth up sampling, post processing and in loop filtering. BVI DVC contains 800 sequences at various spatial resolutions from 270p to 2160p and has been evaluated on ten existing network architectures for four different coding tools. Experimental results show that this database produces significant improvements in terms of coding gains over three existing (commonly used) image/video training databases under the same training and evaluation configurations. The overall additional coding improvements by using the proposed database for all tested coding modules and CNN architectures are up to 10.3% based on the assessment of PSNR and 8.1% based on VMAF.", "corpus_id": 214713520, "venue": "ArXiv", "year": 2020, "author_names": [ "Di Ma", "Fangfang Zhang", "David R Bull" ], "n_citations": 12, "n_key_citations": 3, "score": 0 }, { "doc_id": "221655715", "title": "Improving Deep Video Compression by Resolution adaptive Flow Coding", "abstract": "In the learning based video compression approaches, it is an essential issue to compress pixel level optical flow maps by developing new motion vector (MV) encoders. In this work, we propose a new framework called Resolution adaptive Flow Coding (RaFC) to effectively compress the flow maps globally and locally, in which we use multi resolution representations instead of single resolution representations for both the input flow maps and the output motion features of the MV encoder. To handle complex or simple motion patterns globally, our frame level scheme RaFC frame automatically decides the optimal flow map resolution for each video frame. To cope different types of motion patterns locally, our block level scheme called RaFC block can also select the optimal resolution for each local block of motion features. In addition, the rate distortion criterion is applied to both RaFC frame and RaFC block and select the optimal motion coding mode for effective flow coding. Comprehensive experiments on four benchmark datasets HEVC, VTL, UVG and MCL JCV clearly demonstrate the effectiveness of our overall RaFC framework after combing RaFC frame and RaFC block for video compression.", "corpus_id": 221655715, "venue": "ECCV", "year": 2020, "author_names": [ "Zhihao Hu", "Zhenghao Chen", "Dong Xu", "Guo Lu", "Wanli Ouyang", "Shuhang Gu College of Software", "Beihang University", "", "School of Electrical", "Information Engineering", "The University of Sydney", "School of Computer ScienceTechnology", "Beijing University of Technology" ], "n_citations": 14, "n_key_citations": 1, "score": 0 }, { "doc_id": "214640998", "title": "Content Adaptive and Error Propagation Aware Deep Video Compression", "abstract": "Recently, learning based video compression methods attract increasing attention. However, the previous works suffer from error propagation due to the accumulation of reconstructed error in inter predictive coding. Meanwhile, the previous learning based video codecs are also not adaptive to different video contents. To address these two problems, we propose a content adaptive and error propagation aware video compression system. Specifically, our method employs a joint training strategy by considering the compression performance of multiple consecutive frames instead of a single frame. Based on the learned long term temporal information, our approach effectively alleviates error propagation in reconstructed frames. More importantly, instead of using the hand crafted coding modes in the traditional compression systems, we design an online encoder updating scheme in our system. The proposed approach updates the parameters for encoder according to the rate distortion criterion but keeps the decoder unchanged in the inference stage. Therefore, the encoder is adaptive to different video contents and achieves better compression performance by reducing the domain gap between the training and testing datasets. Our method is simple yet effective and outperforms the state of the art learning based video codecs on benchmark datasets without increasing the model size or decreasing the decoding speed.", "corpus_id": 214640998, "venue": "ECCV", "year": 2020, "author_names": [ "Guo-Quan Lu", "Chunlei Cai", "Xiaoyun Zhang", "Li Chen", "Wanli Ouyang", "Dong Xu", "Zhiyong Gao" ], "n_citations": 15, "n_key_citations": 2, "score": 0 }, { "doc_id": "208114415", "title": "Deep Learning Based Technology in Responses to the Joint Call for Proposals on Video Compression With Capability Beyond HEVC", "abstract": "Deep learning has achieved great success in the past decade, especially in the fields of computer vision and image processing. After witnessing such success, video coding experts are motivated to consider whether deep learning can also benefit video coding, and if so, they seek to discover why and how. Indeed, a number of research studies have been conducted to explore deep learning for image and video coding, which has been an active and fast growing research area especially since the year 2015. These prior arts can be divided into two categories: new coding schemes that are built solely upon deep networks (deep schemes) and deep network based coding tools that are embedded into traditional coding schemes (deep tools) Moreover, in the responses to the joint call for proposals on video compression with capability beyond High Efficiency Video Coding (HEVC) a number of deep tools have been proposed, and some of them are further studied for the upcoming Versatile Video Coding (VVC) In this paper, we summarize the ongoing efforts in the Joint Video Experts Team about the proposed deep tools, and we discuss several promising tools in much detail, including neural network based intra prediction, convolutional neural network (CNN) based in loop filtering, and CNN based block adaptive resolution coding. A series of experimental results are provided to demonstrate the capability of these tools in achieving higher compression efficiency than the VVC or HEVC anchor. These results shed light on the promising direction of deep learning based future video coding, towards which a lot of open problems call for further study.", "corpus_id": 208114415, "venue": "IEEE Transactions on Circuits and Systems for Video Technology", "year": 2020, "author_names": [ "DongSheng Liu", "Zhenzhong Chen", "Shan Liu", "Feng Wu" ], "n_citations": 11, "n_key_citations": 2, "score": 0 } ]

[ { "doc_id": "209516427", "title": "Biased infinity Laplacian Boundary Problem on finite graphs", "abstract": "We provide an algorithm, running in polynomial time in the number of vertices, computing the unique solution to the biased infinity Laplacian Boundary Problem on finite graphs. The algorithm is based on the general outline and approach taken in the corresponding algorithm for the unbiased case provided by Lazarus et al. The new ingredient is an adjusted (biased) notion of a slope of a function on a path in a graph. The algorithm can be used to determine efficiently numerical approximations to the viscosity solutions of biased infinity Laplacian PDEs.", "corpus_id": 209516427, "venue": "", "year": 2019, "author_names": [ "Yuval Peres", "Zoran Sunic" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "132184484", "title": "Bernoulli's Problem for the Infinity Laplacian Near a Set with Positive Reach", "abstract": "We consider the exterior as well as the interior free boundary Bernoulli problem associated with the infinity Laplacian under a non autonomous boundary condition. Recall that the Bernoulli problem involves two domains: one is given, the other is unknown. Concerning the exterior problem we assume that the given domain has a positive reach, and prove an existence and uniqueness result together with an explicit representation of the solution. Concerning the interior problem, we obtain a similar result under the assumption that the complement of the given domain has a positive reach. In particular, for the interior problem we show that uniqueness holds in contrast to the usual problem associated to the Laplace operator.", "corpus_id": 132184484, "venue": "Symmetry", "year": 2019, "author_names": [ "Antonio Greco" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "149600308", "title": "The Infinity Laplacian", "abstract": "The limit equation of the p Laplace equation as (p\\rightarrow \\infty is a very fascinating one. In two variables it is the equation.", "corpus_id": 149600308, "venue": "", "year": 2019, "author_names": [ "Peter Lindqvist" ], "n_citations": 5, "n_key_citations": 0, "score": 1 }, { "doc_id": "119175558", "title": "A Holder infinity Laplacian obtained as limit of Orlicz fractional Laplacians", "abstract": "This paper concerns with the study of the asymptotic behavior of the solutions to a family of fractional type problems on a bounded domain, satisfying homogeneous Dirichlet boundary conditions. The family of differential operators includes the fractional $p_n$ Laplacian when $p_n\\to\\infty$ as a particular case, tough it could be extended to a function of the H\\\"older quotient of order $s$ whose primitive is an Orlicz function satisfying appropriated growth conditions. The limit equation involves the H\\\"older infinity Laplacian.", "corpus_id": 119175558, "venue": "", "year": 2018, "author_names": [ "Juli'an Fern'andez Bonder", "Mayte P'erez-Llanos", "Ariel Martin Salort" ], "n_citations": 14, "n_key_citations": 0, "score": 0 }, { "doc_id": "202144018", "title": "Harnack inequality and an asymptotic mean value property for the Finsler infinity Laplacian", "abstract": "Abstract In this paper, we prove a Harnack inequality for nonnegative viscosity supersolutions of nonhomogeneous equations associated with normalized Finsler infinity Laplace operators. Viscosity solutions to homogeneous equations are also characterized via an asymptotic mean value property, understood in a viscosity sense.", "corpus_id": 202144018, "venue": "Advances in Calculus of Variations", "year": 2019, "author_names": [ "Benyam Mebrate", "Ahmed Mohammed" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "202152011", "title": "Some estimates and properties of solutions to the biased infinity Laplacian equations", "abstract": "", "corpus_id": 202152011, "venue": "", "year": 2019, "author_names": [ "Liu Fang", "Yang Xiaoping", "Jiang Feida" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "119318684", "title": "Optimal regularity for a two phase free boundary problem ruled by the infinity Laplacian", "abstract": "In this paper we consider a non variational two phase free boundary problem ruled by the infinity Laplacian. Our main result states that normalized viscosity solutions in $B_1$ are universally Lipschitz continuous in $B_{1/2} which is the optimal regularity for the problem. We make a new use of the Ishii Lions' method, which works as a surrogate for the lack of a monotonicity formula and is bound to be applicable in related problems.", "corpus_id": 119318684, "venue": "", "year": 2018, "author_names": [ "Damiao J Ara'ujo", "Eduardo V Teixeira", "Jose Miguel Urbano" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "125647936", "title": "Parabolic Biased Infinity Laplacian Equation Related to the Biased Tug of War", "abstract": "Abstract In this paper, we study the parabolic inhomogeneous b biased infinity Laplacian equation arising from the b biased tug of war u t D b u f x t {u_{t} \\Delta_{\\infty}\\beta}u=f(x,t) where b is a fixed constant and D b \\Delta_{\\infty}\\beta} is the b biased infinity Laplacian operator D b u D N u b D u \\Delta_{\\infty}\\beta}u=\\Delta_{\\infty}{N}u+\\beta\\lvert Du\\rvert related to the game theory named b biased tug of war. We first establish a comparison principle of viscosity solutions when the inhomogeneous term f does not change its sign. Based on the comparison principle, the uniqueness of viscosity solutions of the Cauchy Dirichlet boundary problem and some stability results are obtained. Then the existence of viscosity solutions of the corresponding Cauchy Dirichlet problem is established by a regularized approximation method when the inhomogeneous term is constant. We also obtain an interior gradient estimate of the viscosity solutions by Bernstein's method. This means that when f is Lipschitz continuous, a viscosity solution u is also Lipschitz in both the time variable t and the space variable x. Finally, when f 0 {f=0} we show some explicit solutions.", "corpus_id": 125647936, "venue": "", "year": 2018, "author_names": [ "Fang Liu", "Feida Jiang" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "40630397", "title": "Multiple solutions for the fractional Laplacian problems with different asymptotic limits near infinity", "abstract": "Abstract In this paper we obtain the existence of two one sign nontrivial solutions for the fractional Laplacian equations with the nonlinearity having different asymptotic limits at infinity via the mountain pass theorem and the cut off techniques.", "corpus_id": 40630397, "venue": "Appl. Math. Lett.", "year": 2018, "author_names": [ "Yutong Chen", "Jiabao Su" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "125215404", "title": "An inhomogeneous evolution equation involving the normalized infinity Laplacian with a transport term", "abstract": "In this paper, we prove the uniqueness and stability of viscosity solutions of the following initial boundary problem related to the random game named tug of war with a transport term \\begin{document}\\left\\ \\begin{array}{35}{l} {u}_{t} \\Delta _{\\infty {N}u \\langle \\xi ,Du\\rangle f(x,t) \\text{in} {Q}_{T} u g, \\text{on} \\partial }_{p}{Q}_{T} \\end{array} \\right. \\end{document} where \\begin{document} \\Delta _{\\infty {N}u \\frac{1}\\left| Du \\right|{2}\\sum\\limits_{i,j 1}{n}{u}_{{x}_{i}{u}_{{x}_{j}{u}_{{x}_{i}{x}_{j}\\end{document} denotes the normalized infinity Laplacian, \\begin{document} x: Q_T\\to R^n$\\end{document} is a continuous vector field, \\begin{document} f$\\end{document} and \\begin{document} g$\\end{document} are continuous. When \\begin{document} x$\\end{document} is a fixed field and the inhomogeneous term \\begin{document} f$\\end{document} is constant, the existence is obtained by the approximate procedure. When \\begin{document} f$\\end{document} and \\begin{document} x$\\end{document} are Lipschitz continuous, we also establish the Lipschitz continuity of the viscosity solutions. Furthermore we establish the comparison principle of the generalized equation with the first order term with initial boundary condition \\begin{document}{u_t}(x,t) D _ ^N u (x,t) H(x,t,Du(x,t) f(x,t) \\end{document} where \\begin{document} H(x,t,p):Q_Tx R^n\\to R$\\end{document} is continuous, \\begin{document} H(x,t,0) 0$\\end{document} and grows at most linearly at infinity with respect to the variable \\begin{document} p$\\end{document} And the existence result is also obtained when \\begin{document} H(x,t,p) H(p)\\end{document} and \\begin{document} f$\\end{document} is constant for the generalized equation.", "corpus_id": 125215404, "venue": "", "year": 2018, "author_names": [ "Fang Liu" ], "n_citations": 1, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "215238860", "title": "More Data, More Relations, More Context and More Openness: A Review and Outlook for Relation Extraction", "abstract": "Relational facts are an important component of human knowledge, which are hidden in vast amounts of text. In order to extract these facts from text, people have been working on relation extraction (RE) for years. From early pattern matching to current neural networks, existing RE methods have achieved significant progress. Yet with explosion of Web text and emergence of new relations, human knowledge is increasing drastically, and we thus require \"more\" from RE: a more powerful RE system that can robustly utilize more data, efficiently learn more relations, easily handle more complicated context, and flexibly generalize to more open domains. In this paper, we look back at existing RE methods, analyze key challenges we are facing nowadays, and show promising directions towards more powerful RE. We hope our view can advance this field and inspire more efforts in the community.", "corpus_id": 215238860, "venue": "AACL", "year": 2020, "author_names": [ "Xu Han", "Tianyu Gao", "Yankai Lin", "Hao Peng", "Yaoliang Yang", "Chaojun Xiao", "Zhiyuan Liu", "Peng Li", "Maosong Sun", "Jie Zhou" ], "n_citations": 21, "n_key_citations": 2, "score": 1 }, { "doc_id": "219965358", "title": "Biomedical Relation Extraction Using Distant Supervision", "abstract": "With the accelerating growth of big data, especially in the healthcare area, information extraction is more needed currently than ever, for it can convey unstructured information into an easily interpretable structured data. Relation extraction is the second of the two important tasks of relation extraction. This study presents an overview of relation extraction using distant supervision, providing a generalized architecture of this task based on the state of the art work that proposed this method. Besides, it surveys the methods used in the literature targeting this topic with a description of different knowledge bases used in the process along with the corpora, which can be helpful for beginner practitioners seeking knowledge on this subject. Moreover, the limitations of the proposed approaches and future challenges were highlighted, and possible solutions were proposed.", "corpus_id": 219965358, "venue": "Sci. Program.", "year": 2020, "author_names": [ "Nada Boudjellal", "Huaping Zhang", "Asif Khan", "Arshad Ahmad" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "224975392", "title": "A survey on neural relation extraction", "abstract": "Relation extraction is a key task for knowledge graph construction and natural language processing, which aims to extract meaningful relational information between entities from plain texts. With the development of deep learning, many neural relation extraction models were proposed recently. This paper introduces a survey on the task of neural relation extraction, including task description, widely used evaluation datasets, metrics, typical methods, challenges and recent research progresses. We mainly focus on four recent research problems: (1) how to learn the semantic representations from the given sentences for the target relation, (2) how to train a neural relation extraction model based on insufficient labeled instances, (3) how to extract relations across sentences or in a document and (4) how to jointly extract relations and corresponding entities? Finally, we give out our conclusion and future research issues.", "corpus_id": 224975392, "venue": "", "year": 2020, "author_names": [ "Kang Liu" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "220403417", "title": "Neural relation extraction: a survey", "abstract": "Neural relation extraction discovers semantic relations between entities from unstructured text using deep learning methods. In this study, we present a comprehensive review of methods on neural network based relation extraction. We discuss advantageous and incompetent sides of existing studies and investigate additional research directions and improvement ideas in this field.", "corpus_id": 220403417, "venue": "ArXiv", "year": 2020, "author_names": [ "Mehmet Aydar", "Ozge Bozal", "Furkan Ozbay" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "222117619", "title": "Relation Extraction Using Distant Supervision: a Survey", "abstract": "Relation extraction is a subtask of information extraction where semantic relationships are extracted from natural language text and then classified. In essence, it allows to acquire structured knowledge from unstructured text. In this work, we present a survey of relation extraction methods that leverage pre existing structured or semi structured data to guide the extraction process. We introduce a taxonomy of existing methods and describe distant supervision approaches in detail. We describe in addition the evaluation methodologies and the datasets commonly used for quality assessment. Finally, we give a high level outlook on the field, highlighting open problems as well as the most promising research directions.", "corpus_id": 222117619, "venue": "", "year": 2019, "author_names": [ "eXascale Infolab" ], "n_citations": 25, "n_key_citations": 0, "score": 0 }, { "doc_id": "234729143", "title": "Review of Entity Relation Extraction Methods", "abstract": "", "corpus_id": 234729143, "venue": "", "year": 2020, "author_names": [ "Ling Dongmei", "Zhang Yang", "Liu Dongyuan", "Li Danqiong" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "59337495", "title": "Relation Extraction Using Distant Supervision", "abstract": "Relation extraction is a subtask of information extraction where semantic relationships are extracted from natural language text and then classified. In essence, it allows us to acquire structured knowledge from unstructured text. In this article, we present a survey of relation extraction methods that leverage pre existing structured or semi structured data to guide the extraction process. We introduce a taxonomy of existing methods and describe distant supervision approaches in detail. We describe, in addition, the evaluation methodologies and the datasets commonly used for quality assessment. Finally, we give a high level outlook on the field, highlighting open problems as well as the most promising research directions.", "corpus_id": 59337495, "venue": "ACM Comput. Surv.", "year": 2019, "author_names": [ "Alisa Smirnova", "Philippe Cudre-Mauroux" ], "n_citations": 19, "n_key_citations": 0, "score": 0 }, { "doc_id": "184482827", "title": "A Brief Survey of Relation Extraction Based on Distant Supervision", "abstract": "As a core task and important part of Information ExtractionEntity Relation Extraction can realize the identification of the semantic relation between entity pairs. And it plays an important role in semantic understanding of sentences and the construction of entity knowledge base. It has the potential of employing distant supervision method, end to end model and other deep learning model with the creation of large datasets. In this review, we compare the contributions and defect of the various models that have been used for the task, to help guide the path ahead.", "corpus_id": 184482827, "venue": "ICCS", "year": 2019, "author_names": [ "Yong Shi", "Yang Xiao", "Lingfeng Niu" ], "n_citations": 7, "n_key_citations": 0, "score": 0 }, { "doc_id": "199448278", "title": "IberLEF 2019 Portuguese Named Entity Recognition and Relation Extraction Tasks", "abstract": "This work provides and overview of the Named Entity Recognition (NER) and Relation Extraction (RE) in Portuguese shared tasks in IberLEF 2019, its participant systems and results. These tasks sought to challenge Portuguese NER and RE systems by offering five new datasets for testing, two for RE and three for NER. Of these new datasets, two in particular offered a novel challenge for NER: the first composed of official police documents and the second composed of hospital's clinical notes. These cannot be published due to their sensitive nature, but the other three have been released for public use.", "corpus_id": 199448278, "venue": "IberLEF@SEPLN", "year": 2019, "author_names": [ "Sandra Collovini", "Joaquim Francisco Santos Neto", "Bernardo Scapini Consoli", "Juliano Terra", "Renata Vieira", "Paulo Quaresma", "Marlo Souza", "Daniela Barreiro Claro", "Rafael Glauber" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "207757546", "title": "A Survey of Relation Extraction of Knowledge Graphs", "abstract": "With the widespread use of big data, knowledge graph has become a new hotspot. It is used in intelligent question answering, recommendation system, map navigation and so on. Constructing a knowledge graph includes ontology construction, annotated data, relation extraction, and ontology inspection. Relation extraction is to solve the problem of entity semantic linking, which is of great significance to many natural language processing applications. Research related to relation extraction has gained momentum in recent years, necessitating a comprehensive survey to offer a bird's eye view of the current state of relation extraction. In this paper, we discuss the development process of relation extraction, and classify the relation extraction algorithms in recent years. Furthermore, we discuss deep learning, reinforcement learning, active learning and transfer learning. By analyzing the basic principles of supervised learning, unsupervised learning, semi supervised learning and distant supervision, we elucidate the characteristics of different relation extraction algorithms, and give the potential research directions in the future.", "corpus_id": 207757546, "venue": "APWeb/WAIM Workshops", "year": 2019, "author_names": [ "Aoran Li", "Xinmeng Wang", "Wenhuan Wang", "Anman Zhang", "Bohan Li" ], "n_citations": 2, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "188869411", "title": "'nmT ltf`l lSfy llTlb@ /lmdrsyn w'thrh fy ktsb Tlbthm mhrt Hl lms'l@ lryDy@", "abstract": "hdf lbHth lt`rf `l~ 'thr 'nmT ltf`l lSfy llTlb@ lmdrsyn fy ktsb Tlbthm mhrt Hl lms'l@ lryDy@ wtkwnt `yn lbHth mn fy'tyn l'wl~ (6) mn Tlb@ lmdrsyn fy qsm lryDyt kly@ ltrby@ l'ssy@ jm` dhwk mn kl ljnsyn mwz`yn bltswy `l~ 'nmT ltf`l lSfy lthlth( lmdrs ltshrky lTlb) wqd tm khtyrhm Hsb drjthm `l~ stmr@ lmlHZ@ lm`tmd@ fy lbHth lHly 'm lthny@ fqd knt (186) Tlb wTlb@ mn Tlb@ lSf lthmn l'ssy mn ldhyn ydrshm lTlb@ lmdrsyn ldhyn wq` lkhtyr `lyhm fy mdrs lt`lym l'ss fy mdyn@ dhwk mwz`yn `l~ l'nmT lthlth@ wltHqyq hdf lbHth `tmd lbHthn `l~ bTq@ lmlHZ@ lty `dh kwmr( 1985 Kumar, wlty sbqt 'n qnnt llbyy' l`rqy@ lkshf 'nmT ltf`l lSfy `nd lTlb@ lmdrsyn. km `d lbHthn khtbr lHl lms'l@ lryDy@ tkwn bSyGth lnhy'y@ mn (20) fqr@ mwDw`y@ mn nw` khtyr mn mt`dd b`d lt'kd mn Sdqh wthbth wkhSy'Sh lsykwmtry@ wb`d tHdyd 'frd `yn@ lbHth mn lfy'tyn nfdh lbHthn tjrb@ bHthhm mn khll lTlb@/lmdrsyn ldhyn tm khtyrhm btrykh (3/3 5/4/2018) thm Tbq khtbr Hl lmsl@ lryDy@ `lyhm wb`d jm` lbynt wtHlylh HSy'y bst`ml khtbry tHlyl ltbyn lthny'y l`mly wshyfy llmqrnt lb`dy@ dlt lnty'j l~ 1.l ywjd frq dhw dll@ HSy'y@ `nd mstw~(0.05) byn mtwsTt ktsb 'frd `yn@ lbHth mn Tlb@ lSf lthmn l'ss lmhrt Hl lms'l@ lryDy@ tb` lmtGyr ljns lwHdh, wltf`l bynh wbyn mtGyr nmT ltf`l lSfy 2.wjwd frq dhw dll@ HSy'y@ `nd mstw~ (0.05) byn mtwsTy ktsb 'frd nmTy ltf`l lmdrs lTlb) w( lmdrs ltshrky) lmhrt Hl lmsl@ lryDy@ wlSlH nmT lmdrs fy kl lmqrntyn. 3.wjwd frq dhw dll@ HSy'y@ `nd mstw~ (0.05) byn mtwsTy ktsb mhrt Hl lmsl@ lryDy@ ld~ 'frd lnmTyn (ltshrky, lTlb) wlSlH lnmT ltshrky, wb`dh khrj lbHthn b`d@ mn ltwSyt wlmqtrHt. https:/doi.org/10.24897/acn.64.68.276", "corpus_id": 188869411, "venue": "lmw'tmr l`lmy ldwly lwl", "year": 2019, "author_names": [ "'zhr `ly Hsyn brhym", "mHmd sm`yl slymn" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "190250726", "title": "lslwkt ltdrysy@ l'stdh@ ltrby@ lbdny@ wlryDy@ llTwryn lmtwsT wlthnwy Hsb ad@ Hmdn lmlHZ@ wtHlyl ltf`l lSfy lshml.", "abstract": "", "corpus_id": 190250726, "venue": "", "year": 2019, "author_names": [ "`bd lHfyZ qdry Kadri Abd hafid" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "151223130", "title": "l'f`l ltwjyhy@ ld~ lm`lmyn fy ltf`l lSfy 'thn t`lym llG@ l`rby@ `l~ Dw nZry@ 'wstyn wnZry@ synklyr wkwlthrd: drs@ lHlt lmt`dd@ fy m`hd \"dr lslm\" w\"lmnwr@\" bjwmbnj", "abstract": "mstkhlS lbHth tnwl hdh lbHth mwDw` l'f`l ltwjyhy@ ld~ lm`lmyn fy ltf`l lSfy 'thn t`lym llG@ l`rby@ `l~ Dw nZry@ 'wstyn wnZry@ synklyr wkwlthrd. wysthdf hdh lbHth lkshf `n 1) SyG@ l'f`l ltwjyhy@ ld~ lm`lmyn fy ltf`l lSfy 'thn t`lym llG@ l`rby@ fy m`hd \"dr lslm\" w\"lmnwr@\" bjwmbnj 2) wwZyfth; 3) wstrtyjy@ stkhdmh. wlmdkhl fy hdh lbHth hw lmdkhl lnw`y bdrs@ lHl@ lmt`dd@ wlbynt lhdh lbHth hy l'f`l ltwjyhy@ ld~ lm`lm. wjm`th lbHth@ mn mlHZ@ bltwthyq wlmqbl@ wHllth bTryq@ lTrz ltf`ly (Interactive Model) wlnty'j lhdh lbHth hy: 1) SyG@ l'f`l ltwjyhy@ ld~ lm`lmyn fy ltf`l lSfy 'thn t`lym llG@ l`rby@ hy SyG@ l'mr, wSyG@ lstfhm, wSyG@ lkhbr; 2) wwZyfth hy lTlb wl'mr wld`w@ wlrj wlnSyH@ wld`w@ l~ llh wlnhy; 3) w strtyjy@ stkhdmh hw strtyjy@ mbshr@ wGyr mbshr@ wstkhdm lstrtyjy@ lmbshr@ ll'f`l ltwjyhy@ bwZy'f: lTlb bSyG@ mood imperative \"'Tlb\" bSyG@ f`l l'mr, b) l'mr bSyG@ f`l l'mr, wsm f`l l'mr, wmSdr wwzn \"f`l\" j) ld`w@ bSyG@ mood imperative \"ytfDl\" wsm f`l l'mr \"hy\" d) lnhy bSyG@ l lnhy@+f`l mDr` h) lrj bSyG@ mood imperative \"'rjw, w\"l`l\" w'tmn~\" wSyG@ lm l'mr+ f`l mDr` w) lnSyH@ bSyG@ mood imperative \"lbd\" w\"nHth\" wsm f`l l'mr \"`lykm\" z) ld`w@ l~ llh bSyG@ mood imperative \"'d`w llh\" w\"`s~ llh\" wstkhdm strtyjy@ Gyr mbshr@ lh bwZy'f: lTlb bSyG@ lstfhm wlkhbr, b) l'mr bSyG@ lstfhm wlkhbr wlG@ ljsd, j) lnhy bSyG@ lkhbr, wdhkr l'sm, wf`l l'mr, d) lnSyH@ bSyG@ l lnhy@ h) ld`w@ l~ llh bSyG@ lkhbr. wlstntj lnZry hw: 1) mn lnHy@ ltdwly@ n lm`lm ymyl l~ stkhdm l'f`l ltwjyhy@ bstrtyjy@ mbshr@ fy byy' lthqfy l'bwy wql@ lrd ld~ lTlb@ wlm`lm ymyl l~ stkhdm l'f`l ltwjyhy@ bstrtyjy@ Gyr mbshr@ fy byy' lthqfy ldymqrTy wkhlfy@ lm`lm bthqf@ \"jw lwsT~\" 2) wmn nHy@ t`lym llG@ l`rby@ n m`lmy llG@ l'jnby@ yfDlwn 'slwb ltwjyh lmbshr mn l'slwb Gyr lmbshr llHSwl `l~ kthr@ rd lTlb@ l'n lm`lmyn ykhD`wn llmbd' lt`wny wmbd' ltmyz ltdryHy fy lt`lym dhy lm`n~ ABSTRACT This research examines the directive speech acts of Arabic teacher in the teaching learning process: the perspective of Austin and perspective of Sinclair and Coulthard. The study focuses on: (1) the forms of directive speech acts in the teaching learning process of Arabic class at Islamic Senior High School and Islamic Boarding School in Darus Salam and Al Munawaroh; (2) the function of directive speech acts in the teaching learning process; and (3) the strategy of using directive speech acts in the teaching learning process. This research is conducted by multiple qualitative case approach. The data of this research is the directive speech acts of teachers. The data collected is taken from recording observation and interview and is analyzed by interactive model analysis. Substantive findings consist of: (1) the form of directive speech acts in the teaching learning process of Arabic class contain 3 forms. There are imperative, interogative, and declarative. b) the function of directive speech acts in the teaching learning process contain 7 functions. There are asking, commanding, inviting, hoping, advising, praying and forbidding. c) the strategy of using directive speech acts in the teaching learning process are a direct strategy and an indirect strategy. A direct strategy is used to express functions of: a) asking with mood imperative\"'Tlb\" and fiil amar, b) commanding with fiil amar, isim fiil amar, and isim wazan f`l, c) inviting with mood imperative\"ytfDl\" and isim fiil amar\"hy\" d) forbidding with llnhy@+f`l mDr` e) hoping with mood imperative \"'rjw\" \"l`l\" \"'tmn~\" dan lm l'mr+ f`l mDr` f) advising with mood imperative ,land isim fiil amar \"`lykm\" g) praying with mood imperatif \"d`w llh\" and \"`s~ llh\" An indirect strategy is used to express functions of: a) asking with interrogative, and declarative, b) commanding with interrogative, and declarative, gesture language, c) forbidding with declarative, d) calling name's, and fiil amr, e) advising with l lnhy@ f) praying with declarative. The formal findings consist of: (1) pragmatic findings, Teacher tends to use directive speech act by direct strategy in paternalistic context and less of student's response and Teacher tends to use an indirect strategy in democratic context and Teacher's cultural background of Central Java; (2) the findings of language learning, The foreign language teachers prefer to use direct strategies rather than indirectly to make students more responsive because of the obedience to the principles of cooperation and the principle of progressive differentiation in meaningful learning. ABSTRAK Penelitian ini mengkaji tindak tutur direktif guru dalam interaksi kelas Pembelajaran Bahasa Arab perspektif Austin dan Perspektif Sinclair dan Coulthard. Fokus penelitian ini 1) bentuk tindak tutur direktif (TTD) dalam interaksi kelas pembelajaran bahasa Arab di Madrasah Aliyah dan Pondok Pesantren Darus Salam dan Al Munawaroh, 2) Fungsi TTD dalam interaksi kelas tersebut, dan 3) Strategi penggunaan TTD dalam interaksi kelas. Pendekatan dalam penelitian ini adalah pendekatan kualitatif multikasus. Data dalam penelitian ini adalah tindak tutur direktif guru. Data data tersebut diperoleh dengan metode observasi perekaman dan wawancara. Kemudian dianalisis dengan analisis model interaktif. Temuan subtantif penelitian ini, 1) Bentuk TTD guru dalam interaksi kelas pembelajaran bahasa Arab adalah imperatif, interogatif, dan deklaratif; (2) Fungsi TTD guru dalam interaksi kelas adalah meminta, memerintah, mengajak, berharap, menasehati, mendoa dan melarang; (3) Strategi penggunaan TTD yang digunakan dalam interaksi kelas adalah strategi langsung dan strategi tidak langsung. Strategi langsung digunakan untuk TTD berfungsi: a) meminta dengan mood imperatif\"'Tlb\" dan fiil amar, b) memerintah dengan fiil amar, isim fiil amar, dan isim dengan wazan f`l, c) mengajak dengan mood imperatif\"ytfDl\" dan isim fiil amar \"hy\" d) melarang dengan bentuk l lnhy@ f`l lmDr` e) berharap dengan mood imperatif \"'rjw\" \"l`l\" \"'tmn~\" dan lm l'mr+ f`l mDr` f) menasehati dengan mood imperative\"lbd\" dan\"nHth\" dan isim fiil amar \"`lykm\" g) mendoa dengan mood imperatif \"d`w llh\" dan \"`s~ llh\" Strategi tidak langsung digunakan untuk TTD berfungsi: a) meminta dengan kalimat interogatif dan deklaratif, b) memerintah dengan kalimat interogatif, kalimat deklaratif dan bahasa isyarat, c) melarang dengan kalimat deklaratif, d) memanggil nama dan fiil amar, e) menasehati dengan pemarkah \"llnhy@\" f) mendoa dengan bentuk deklaratif. Temuan formal penelitian meliputi: (1) temuan pragmatik, Guru cenderung menggunakan tindak tutur direktif dengan strategi langsung pada konteks budaya paternalistik dan kurangmya respon siswa, serta penggunaan strategi tidak langsung pada konteks budaya demokratis dan guru berlatar belakang budaya Jawa Tengah; (2) temuan dalam pembelajaran bahasa, guru bahasa asing lebih mengutamakan penggunaan tindak tutur direktif strategi langsung daripada strategi tidak langsung untuk menjadikan siswa lebih responsif karena adanya ketaatan pada prinsip kerjasama dan prinsip diferensiasi progresif dalam pembelajaran bermakna.", "corpus_id": 151223130, "venue": "", "year": 2018, "author_names": [ "Lailatul Qomariyah" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "186736797", "title": "ltf`l lSfy fy Zl bydGwjy lmqrb@ blkft", "abstract": "", "corpus_id": 186736797, "venue": "", "year": 2018, "author_names": [ "khwyld 'sm khwyld 'sm", "nyly shm nyly shm" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "188649646", "title": "'nmT ltwSl (ltf`l) lSfy llfZy lsy'd@ fy HSS ltrby@ lbdny@ w lryDy@ Hsb 'd@ nd flndrz lmlHZ@ ltdrys. drs@ wSfy@ lb`D mtwsTt w thnwyt dy'r@ bryk@ wly@ btn@", "abstract": "", "corpus_id": 188649646, "venue": "", "year": 2018, "author_names": [ "qdry `bd lHfyZ qdry `bd lHfyZ", "bn qsmy y`qwb bn qsmy y`qwb", "mrtt mHmd mrtt mHmd" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "186313156", "title": "ltf`l lSfy w`lqth bdf`y@ lt`lm ld~ Tlb lsn@ lthlth@ thnwy drs@ mydny@ bmtqn lshhyd zyn `shwr bmdyn@ ms`d.", "abstract": "", "corpus_id": 186313156, "venue": "", "year": 2018, "author_names": [ "wldHymwd@ jm`@ wldHymwd@ jm`@", "shybwT lkhDr shybwT lkhDr" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "216770654", "title": "f`ly@ stkhdm tTbyq Nearpod fy l'jhz@ llwHy@ `l~ ltf`l lSfy lmd@ lHsb laly ld~ Tlbt lSf lthny thnwy", "abstract": "", "corpus_id": 216770654, "venue": "", "year": 2018, "author_names": [ "mn~ bnt `l~ lshhr~", "mHmd bn brhym lHjyln" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "188636903", "title": "`lq@ ltf`l lSfy bltHSyl ldrsy ld~ tlmydh lsn@ lkhms@ btdy'y", "abstract": "", "corpus_id": 188636903, "venue": "", "year": 2018, "author_names": [ "'myn@ zyd@ Ziada Amina" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "195445873", "title": "dwr ltf`l lSfy fy tHqyq l'hdf ltrbwy@ w lt`lymy@ dkhl lmw'ss@ ljzy'ry@", "abstract": "", "corpus_id": 195445873, "venue": "", "year": 2017, "author_names": [ "`ly hnwd@ `ly hnwd@", "nSr ldyn jbr" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "187106977", "title": "'thr stkhdm strtyjyt lt`lm lnshT `l~ ltf`l lSfy fy Zl lmqrb@ blkft.", "abstract": "", "corpus_id": 187106977, "venue": "", "year": 2017, "author_names": [ "blwl Hmd blwl Hmd", "bdy nwr@ bdy nwr@" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "229000874", "title": "Perancangan Back End Server Menggunakan Arsitektur Rest dan Platform Node.JS (Studi Kasus: Sistem Pendaftaran Ujian Masuk Politeknik Negeri Ujung Pandang)", "abstract": "Back end merupakan program yang berjalan pada sisi server untuk berinteraksi langsung dengan basis data dan melaksanakan proses logic dari suatu sistem web Salah satu teknologi antarmuka aplikasi atau layanan dari suatu program adalah Application Programming Interface (API) API untuk layanan web yang menggunakan protokol HTTP adalah Representational State Transfer (REST) Penggunaan REST API sebagai back end layanan web memungkinkan layanan web diakses oleh sistem lain tanpa batasan bahasa, environment, maupun platform dari sisi front end Sistem existing Ujian Masuk Politeknik Negeri Ujung Pandang (UMPN) memiliki kendala pada waktu respons saat banyaknya akses secara bersamaan. Untuk itu, pada penelitian ini back end dari sistem UMPN dibangun ulang menggunakan arsitektur REST dan platform Node.js. Node.js memiliki keunggulan pada teknik non blocking yang memungkinkan operasi operasi dijalankan secara paralel, sehingga memungkinkan banyak request dapat diselesaikan secara paralel. Fitur fitur dari sistem yang dibangun telah diuji dan berjalan dengan kinerja yang baik. Adapun hasil uji kinerja dari sistem yang telah dibangun menunjukkan peningkatan waktu respons pada kondisi pengujian dengan akses dari virtual users yang meningkat dengan rata rata peningkatan sebesar 52% pada skenario yang diujikan. Adapun sistem yang dibuat memiliki kinerja yang lebih baik dibandingkan sistem existing berdasarkan hasil uji dengan rata rata selisih waktu respons berdasarkan skenario pengujian sebesar 3222,5 ms.", "corpus_id": 229000874, "venue": "", "year": 2020, "author_names": [ "Ahsan Mubariz", "Dahlia Nur", "Eddy Tungadi", "Muhammad Nur Yasir Utomo" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "215745636", "title": "SecureIT using Firebase, Google map and Node.Js", "abstract": "This paper is about describing the features of a software that was developed for its user safety which we called SecureIT is a android based soft ware using Android SDK along with Firebase and Google map SDK along with Node.Js. The aim of developing this project was to make sure and taking its users safety to a next level. Actually now a days some crime incidents like rapes, fire accidents and snatchings are very common and we believe many of those can be prevented if victim got support at the right time. According to the well known daily news paper of Bangladesh The Daily Star there were about 1413 women was rapped where 76 women were dead in 2019. On the same pa per it also said that in 2018 and 2017 the number of rapes were 732 and 818 where we can easily get that the number increases to almost double in 2019. Where we get a point that if those girls get support or get people known about their location at the right time they might get rid of the situation and the number of rapes could be reduced a lot because we all know that now a days using mo bile smartphone is too easy for people. Although leading Chinese mobile phone company Xiaomi introduced a new feature Emergency SOS service in their mobile phones at the end of 2018 with a MIUI 10 update but this feature is only limited to the Xiaomi phones and it was well advertised as well. This paper will briefly describe all the features of our software and its usages.", "corpus_id": 215745636, "venue": "ArXiv", "year": 2020, "author_names": [ "Shanta Rahman", "Saiki Sarkar", "Milon Biswas" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "227063140", "title": "Implementation of a sensor node for monitoring physiological signals with Websocket communication and data visualization in a node.js server over the Internet", "abstract": "This paper describes the design, development and construction of low power sensors nodes, based on internet of things technologies, for the acquisition, processing, transmission and visualization of electrocardiographic (ECG) signal, temperature and heart rate data through the Internet performing continuous data transmission using full duplex connections. This system implements three embedded sensors modules with a low power 32 bit Tensilica microcontroller, which integrates a Wi Fi transceiver. The data is sent to a Web server on the Internet using a Wi Fi network. A middleware functions was developed on the server based on the Node.js Framework, which creates connections based on WebSockets to receive and processed signals sent from sensor nodes and display to remotely connected users. This paper described the design of the sensor node and the blocks that make up the monitoring software and the selection of each of its components is justify. Finally, the results sections show some experimental results that illustrate the operation of the developed prototype and its low energy consumption.", "corpus_id": 227063140, "venue": "2020 IEEE Engineering International Research Conference (EIRCON)", "year": 2020, "author_names": [ "Ricardo Yauri Rodriguez", "Milton Rios Julcapoma" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "226470237", "title": "Beginning Node.JS", "abstract": "", "corpus_id": 226470237, "venue": "", "year": 2020, "author_names": [ "Kanika Sud" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "221111312", "title": "Microservices in SAP HANA XSA: A Guide to REST APIs Using Node.js", "abstract": "", "corpus_id": 221111312, "venue": "", "year": 2020, "author_names": [ "Sergio Guerrero" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "214696248", "title": "Modern Full Stack Development: Using TypeScript, React, Node.js, Webpack, and Docker", "abstract": "Classes The final topic related to classes to discuss is abstract classes. An abstract class is simply one that cannot itself be instantiated. It is always meant to be a base class that others extend from. They serve a similar function as interfaces, a topic we'll look at in the next chapter, but the primary difference is that an abstract class can provide some amount of implementation for methods while an interface cannot. So, by way of example: abstract class BasePlanet name: string; radius: number; constructor(inName: string, inRadius: number) this.name inName; this.radius inRadius; Chapter 5 Building a Strong Foundation: typeSCriptclass BasePlanet name: string; radius: number; constructor(inName: string, inRadius: number) this.name inName; this.radius inRadius; Chapter 5 Building a Strong Foundation: typeSCript", "corpus_id": 214696248, "venue": "", "year": 2020, "author_names": [ "Frank W Zammetti" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "229228165", "title": "MIGRATION OF A PROJECT WRITTEN USING NODE.JS FRAMEWORK TO TYPESCRIPT PROGRAMMING LANGUAGE", "abstract": "", "corpus_id": 229228165, "venue": "", "year": 2020, "author_names": [ "S V Vakhramov", "Alexander Musin", "Dmitry A Rizvanov", "Mansur Khamitov" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "216277801", "title": "PARADIGMICKA I FUNKCIONALNA ANALIZA NODE.JS PLATFORME", "abstract": "U ovom radu prezentovani su osnovni koncepti i karakteristike NodeJs platforme. Takode, prikazana je i uopsteno skript paradigma kao i sami aspekti paradigme. Implementirana aplikacija Super Chat je jednostavna web aplikacija za razmenu poruka.", "corpus_id": 216277801, "venue": "", "year": 2020, "author_names": [ "Una Banjanin", "Srdan Popov" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "219811850", "title": "Rendering Blockchain Immutability in Chatserver: A Node.js Approach", "abstract": "", "corpus_id": 219811850, "venue": "", "year": 2020, "author_names": [ "Umesh Kumar Chopra", "Ayush Kumar Rathore", "Rajiv Pandey" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "174801378", "title": "Detecting Atomicity Violations for Event Driven Node.js Applications", "abstract": "Node.js has been widely used as an event driven server side architecture. To improve performance, a task in a Node.js application is usually divided into a group of events, which are non deterministically scheduled by Node.js. Developers may assume that the group of events (named atomic event group) should be atomically processed, without interruption. However, the atomicity of an atomic event group is not guaranteed by Node.js, and thus other events may interrupt the execution of the atomic event group, break down the atomicity and cause unexpected results. Existing approaches mainly focus on event race among two events, and cannot detect high level atomicity violations among a group of events. In this paper, we propose NodeAV, which can predictively detect atomicity violations in Node.js applications based on an execution trace. Based on happens before relations among events in an execution trace, we automatically identify a pair of events that should be atomically processed, and use predefined atomicity violation patterns to detect atomicity violations. We have evaluated NodeAV on real world Node.js applications. The experimental results show that NodeAV can effectively detect atomicity violations in these Node.js applications.", "corpus_id": 174801378, "venue": "2019 IEEE/ACM 41st International Conference on Software Engineering (ICSE)", "year": 2019, "author_names": [ "Xiaoning Chang", "Wensheng Dou", "Yu Gao", "Jionag Wang", "Jun Wei", "Tao Huang" ], "n_citations": 6, "n_key_citations": 1, "score": 1 } ]

[ { "doc_id": "213953809", "title": "Crossing the western Altiplano: The ecological context of Tiwanaku migrations", "abstract": "Abstract Mobility and migration are critical processes that influence cultural and socio economic development, and have lasting effects on demographic and ecological arrangements. However, these are ephemeral behaviors which are difficult to reconstruct archaeologically. Here, we employ geospatial approaches to reconstruct mobility corridors likely used by Tiwanaku migrants during the Andean Middle Horizon, ca. AD 500 1000. Prehispanic mobility relied on caravans of Andean camelids. We reconstruct probable mobility corridors while comparing cost and permeability based modeling approaches. We further use remote sensing to examine how modern ecological dynamics relate to modeled mobility corridors. Imagery from the Landsat family of multispectral satellites is used to document the response of green vegetation to seasonal and interannual moisture variability. We find that there is a statistically significant increase in the amount of perennially green vegetation land cover along the corridor linking Tiwanaku with its principal colonial enclaves on the Pacific coast. Such perennially green vegetation provides a critical resource for prehispanic caravans. The data indicate a relationship between high volumes of migration and enhanced vegetation. We explore whether Tiwanaku migration routes were established in part on the basis of this resource, or if modern land cover reflects an anthropogenic legacy.", "corpus_id": 213953809, "venue": "", "year": 2020, "author_names": [ "Benjamin R Vining", "Patrick Ryan Williams" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "228898891", "title": "The Sunawa Monolith and a Genre of Extended Arm Sculptures at Tiwanaku, Bolivia", "abstract": "From pre Columbian times until today, monolithic stone sculptures have constituted the public face of Tiwanaku. Researchers, however, have nearly exclusively focused on the sculptural class that we term \"presentation monoliths\" anthropomorphic lithic beings that hold a chicha goblet in one hand and a snuff tablet in the other. Here, we direct attention to a complementary set of sculptures we designate \"extended arm monoliths,\" focusing specifically on a sculpture known as the Sunawa Monolith. We argue that the Sunawa, together with its likely companion sculpture, the Pachakama, was one of several monoliths that belonged to this class, which constituted figures positioned to guard or accompany presentation monoliths. Accordingly, the iconography of the Sunawa Monolith depicts themes of sacrificial violence and vegetative generation. We suggest that Tiwanaku monumental sculpture encompassed an entire \"society\" of animate, differentiated, transacting monoliths that included not just presentation figures but also other beings, including attendant extended arm monoliths.", "corpus_id": 228898891, "venue": "Nawpa Pacha", "year": 2020, "author_names": [ "Anna Marie Guengerich", "John Wayne Janusek" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "226103652", "title": "USO Y CONSUMO DE LA FAUNA EN LOS SECTORES WILA PUKARA Y POKOTIA, SITIO TIWANAKU, LA PAZ, BOLIVIA", "abstract": "Los sectores arqueologicos de Wila Pukara y Pokotia se encuentran tres kilometros al sur del sitiomonumental de Tiwanaku, fueron excavados en 2014 por la Mision Arqueologica Pucara Tiahuanaco apoyada por el Ministere de l'Europe et des Affaires Etrangeres frances y el Centro de Investigaciones Arqueologicas Antropologicas y Administracion de Tiwanaku. Posteriormente a traves de un conveniocon el Laboratorio de Zooarqueologia de la Universidad Mayor de San Andres de La Paz, se analizaronlos restos arqueofaunisticos de los contextos relacionados con un monticulo ceremonial y niveles arquitectonicos. El objetivo del analisis arqueofaunistico fue estudiar las caracteristicas de la fauna de Wila Pukara yPokotia entre 500 DC y 1400 DC en los diferentes contextos culturales para entender la explotacion delos recursos naturales por los actores prehispanicos identificados en la pampa de Achaca. La metodologia utilizada tomo en cuenta la identificacion anatomica, taxonomica, determinacion de edad y sexo (solopara camelidos) osteometria y analisis tafonomico.Los resultados indican que tanto en el sector de Wila Pukara como en Pokotia, la fauna mas explotadafueron los camelidos, tanto para el consumo alimenticio como para materia prima, esta ultimacaracterizada por una industria expeditiva y otra de artefactos elaborados. En los dos sectores se continuacon el patron unificador del Estado Tiahuanaco en relacion con la explotacion mayoritaria de camelidosy minimamente microfauna (Fulica sp.", "corpus_id": 226103652, "venue": "", "year": 2020, "author_names": [ "Velia Mendoza Espana", "Francois Cuynet" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "230628962", "title": "Water Engineering at Precolumbian AD 600 1100 Tiwanaku's Urban Center (Bolivia)", "abstract": "The pre Columbian World Heritage site of Tiwanaku (AD 600 1100) located in highland altiplano Bolivia is shown to have a unique urban water supply system with many advanced hydraulic and hydrological features. By use of Computational Fluid Dynamics (CFD) modeling of the city water system, new revelations as to the complexity of the water system are brought forward. The water system consists of a perimeter drainage channel surrounding the ceremonial center of the city. A network of surface canals and subterranean channels connected to the perimeter drainage channel are supplied by multiple canals from a rainfall collection reservoir. The perimeter drainage channel provides rapid draining of rainy season rainfall runoff together with aquifer drainage of intercepted rainfall; water collected in the perimeter drainage channel is then directed to the Tiwanaku River then on to Lake Titicaca. During the dry season aquifer drainage continues into the perimeter drainage channel; additional water is directed into the drainage channel from a recently discovered, reservoir connected M channel. Two subterranean channels beneath the ceremonial center were supplied by M channel water delivered into the perimeter drainage channel that served to remove waste from the ceremonial center structures conveyed to the nearby Tiwanaku River. From control of the water supply to/from the perimeter drainage channel during wet and dry seasonal changes, stabilization of the deep groundwater level was achieved this resulted in the stabilization of monumental ceremonial structure's foundations, a continuous water supply to inner city agricultural zones, water pools for urban use and health benefits for the city population through moisture level reduction in city ceremonial and secular urban housing structures.", "corpus_id": 230628962, "venue": "", "year": 2020, "author_names": [ "Charles R Ortloff" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "213687032", "title": "A new environmental and spatial approach to the Tiwanaku World Heritage site (Bolivia) using remote sensing (UAV and satellite images)", "abstract": "", "corpus_id": 213687032, "venue": "", "year": 2020, "author_names": [ "Maria E Perez Gonzalez", "Jose I Gallego Revilla" ], "n_citations": 2, "n_key_citations": 0, "score": 1 }, { "doc_id": "225509480", "title": "New discoveries and perspectives on water management and state structure at ad 300 1100 Tiwanaku's Urban Center (Bolivia)", "abstract": "", "corpus_id": 225509480, "venue": "", "year": 2020, "author_names": [ "Charles R Ortloff" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "224917784", "title": "Rejecting, reinventing, resituating", "abstract": "", "corpus_id": 224917784, "venue": "", "year": 2020, "author_names": [ "Nicola Sharratt" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "225642553", "title": "Archaeometric analysis of ceramic production in Tiwanaku state c .500 1000 ce An exploratory study", "abstract": "", "corpus_id": 225642553, "venue": "", "year": 2020, "author_names": [ "Juan Pablo Ogalde", "Antti Korpisaari", "C Riera-Soto", "Bernardo Arriaza", "Carolina Paipa", "P Leyton", "Marcelo Campos-Vallette", "Nelson Lara", "Juan Chacama" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "226006392", "title": "Author response for \"ARCHAEOMETRIC ANALYSIS OF CERAMIC PRODUCTION IN THE TIWANAKU STATE (CA. 500 1000 A.D. AN EXPLORATORY STUDY\"", "abstract": "", "corpus_id": 226006392, "venue": "", "year": 2020, "author_names": [ "" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "219427246", "title": "Exploring Family, Ethnic, and Regional Identities among Tiwanaku Affiliated Communities in Moquegua, Peru", "abstract": "", "corpus_id": 219427246, "venue": "", "year": 2020, "author_names": [ "Kent M Johnson" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "219912926", "title": "Development Trend and Driving Factors of Agricultural Chemical Fertilizer Efficiency in China", "abstract": "In China, a high input of chemical fertilizers is currently required for a relatively low increase in agricultural production, and this has resulted in prominent nonpoint source pollution and problems related to the quality of agricultural products. These phenomena threaten China's implementation of United Nations Sustainable Development Goal 2 (SDG 2) To explore agricultural chemical fertilizer efficiency and the factors driving the growth in chemical fertilizer use in China, as based on an international comparative analysis of China's chemical fertilizer input, the development trend in the application level and the efficiency in the use of chemical fertilizer in China were subject to time series analysis, and the factors influencing change were identified and analyzed using the Logarithmic Mean Divisia Index (LMDI) The results show that: (1) The gap in agricultural chemical fertilizer efficiency is still large when comparing China with modern agricultural countries, and excessive fertilizer input is still a major problem. (2) The continuous growth in the total amount of chemical fertilizer applied in China during the past 18 years has contributed to the increase in chemical fertilizer application intensity, which provided a cumulative contribution of 85.52% with smaller contributions from the planting structure and crop sown area. Based on the analysis of fertilizer application, the chemical fertilizer application intensity of the main grain crops was the most significant factor, accounting for about a 40.00% cumulative contribution. (3) Since 2015, the total amount of chemical fertilizers has been reduced through gradually improving the utilization rate of chemical fertilizers, reducing the application intensity of chemical fertilizers, and implementing the fallow rotation system and other measures. Of these, the reduction in application intensity was the most effective at reducing the overall amount of applied fertilizer. To meet the target for achieving sustainable agricultural development, China must still reduce its use of chemical fertilizers by at least 21.80 million tons. Based on the results of current measures and international experience, some suggestions for reducing fertilizer usage are provided.", "corpus_id": 219912926, "venue": "", "year": 2020, "author_names": [ "Rong He", "Chaofeng Shao", "Rongguang Shi", "Zheyu Zhang", "Run Zhao" ], "n_citations": 2, "n_key_citations": 0, "score": 2 }, { "doc_id": "221946448", "title": "Temporal and spatial pattern evolution and grouping prediction of non point source pollution of chemical fertilizers in China", "abstract": "Reducing pollution caused by chemical fertilizers while continuously increasing the output value of agriculture at the same time is an inevitable requirement to improve high quality development of agriculture. Actions aimed at achieving zero growth in 1080 Zhong Guo Sheng Tai Nong Ye Xue Bao (Zhong Ying Wen 2020 Di 28Juan http:/www.ecoagri.ac.cn chemical fertilizer use have been formulated and implemented in provinces across China. However, inconsistencies in progress and effectiveness among provinces may affect each other. The fertilizer loss coefficient method was used to calculate the emission intensity of non point source pollution in 31 provinces across the Chinese mainland from 1997 to 2018. Spatial autocorrelation and hotspot analysis methods, based on the calculated emission intensity, were used to reveal the emission intensity temporal and spatial characteristics, and to analyze the interaction effect on neighboring provinces. According to these characteristics, the country was grouped into three regions: a hot spot region, a cold spot region, and a non hot (cold) spot region. Then, the Environmental Kuznets Curve (EKC) trend between the non point source pollution emission intensity of fertilizers and the per capita agricultural output value in each group was simulated and predicted under spatial heterogeneity and spatial correlation conditions. The results showed that the emission intensity varied considerably among provinces across the country. The emission intensity was spatially positively autocorrelated across the country with a cluster mode. A hot spot analysis showed that the spatiotemporal pattern for non point source pollution caused by fertilizers was relatively stable. The hot spot region was mainly concentrated in the central and southern parts of China, especially in the middle and lower reaches of the Yangtze River. However, in recent years, the number of hotspots in the Huanghuaihai region had significantly decreased. The cold spot region was mainly concentrated in the western region and Heilongjiang Province. The EKC trend simulation, based on temporal and spatial pattern feature grouping, showed that there was a significant nonlinear EKC relationship between agricultural economic growth and chemical fertilizer non point source pollution in each group. However, the trend and the inflection point of each curve were clearly different. The hot spot region appeared as an \"inverted U type\" curve, but both the cold spot region and the non hot (cold) spot region had \"inverted N type\" curves. Most provinces in each region were in the ascending phase of the curves. Industrial structure adjustment and industrial transfer promoted the spatial spillover effect of fertilizer derived non point source pollution among the regions. Therefore, coordinated governance among regions needs to be introduced. Based on the above results, we propose that there should be corresponding policy implications, and that suitable fertilization equipment should be developed and promoted to increase fertilizer utilization in the hot spot region. Conservation farming should be applied and the use of organic fertilizer promoted in the cold spot region. The non hot (cold) spot region should reasonably adjust the structure of its agricultural industry and focus on the crop livestock and poultry farming cycle. Ecological compensation and emissions trading should be implemented to achieve collaborative governance.", "corpus_id": 221946448, "venue": "", "year": 2020, "author_names": [ "Lei Junhua", "Su Shipeng", "Yue Wenmeng", "Sun Xiaoxia" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "216430403", "title": "Runoff loss of nitrogen and phosphorus from a rice paddy field in the east of China: Effects of long term chemical N fertilizer and organic manure applications", "abstract": "Abstract Agrochemicals, e.g. nitrogen (N) and phosphorus (P) fertilizers are being used extensively to increase the agricultural production; however, considerable losses of these fertilizers find their way to the surrounding surface water bodies causing severe pollution and eutrophication. Such non point source of pollution seemed to be more pronounced in the rice fields. Accordingly, a two year (2018 2019) field study was conducted at a rice paddy field under long term N fertilizer management practices in the rural suburb of Shanghai, China. N and P losses through the surface runoff in the paddy field were measured. Six N fertilizer practices were performed since 2011 as follows: no N treatment (N0) chemical N treatment (urea, N 46% applied at the rates of 100 (N100) 200 (N200) 300 (N300) kg N ha 1 and combinations of chemical and organic N fertilizers (30% organic manure) at the rates of 200 (ON200) and 300 kg N ha 1 (ON300) Results showed that the highest runoff losses of TN (20.5 kg ha 1) and TP (1.66 kg ha 1) were respectively produced by N300 and ON300 practices during the rice growing season. TN runoff loss significantly decreased by reducing the rate of N fertilizer (P", "corpus_id": 216430403, "venue": "", "year": 2020, "author_names": [ "Naxin Cui", "Xu Zhang", "Ahmed A Abdelhafez", "Li Zhou", "Huifeng Sun", "Guifa Chen", "Guo-yan Zou", "Sheng Zhou" ], "n_citations": 17, "n_key_citations": 0, "score": 2 }, { "doc_id": "222214297", "title": "Manure combined with chemical fertilizer increases rice productivity by improving soil health, post anthesis biomass yield, and nitrogen metabolism", "abstract": "Excessive reliance on chemical fertilizer (CF) in conventional farming is a serious concern owing to its negative effects on soil health, the environment, and crop productivity. Organic manure is an alternative source of fertilizer to reduce the amount of CF usage in agriculture, decrease environmental pollution, and ensure sustainable crop production. This study assessed the integrated effect of poultry manure (PM) and cattle manure (CM) with CF on soil properties, plant physiology, and rice grain yield. Additionally, the difference in pre and post anthesis dry matter (DM) and nitrogen (N) accumulation and their relationship with grain yield was also determined. Pot experiments were performed in the early and late growing season at the experimental station of Guangxi University, China, in 2018. A total of six treatments, i.e. T1 CF0; T2 100% CF; T3 60% CM 40% CF; T4 30% CM 70% CF; T5 60% PM 40% CF, and T6 30% PM 70% CF were used in this pot experiment. Results showed that T6 enhanced leaf photosynthetic efficiency by 11% and 16% chlorophyll content by 8% and 11% panicle number by 12% and 16% and grain yield by 11% and 15% in the early and late seasons, respectively, compared to T2. Similarly1, post anthesis N and DM accumulation, N uptake, and soil properties (i.e. soil organic carbon, total N, and bulk density) were improved with integrated CF and manure treatments over the sole CF treatments. Interestingly, increases in post anthesis N uptake and DM production were further supported by enhanced N metabolizing enzyme activities (i.e. nitrate reductase, glutamine synthetase, and glutamate oxoglutarate aminotransferase during the grain filling period in combined treatments. In addition, the linear regression analysis showed that post anthesis DM (R2 0.95) and N (R2 0.96) accumulation were highly associated with grain yield of rice. Thus, the combination of 30% N from PM or CM with 70% N from CF (i.e. urea) is a promising option for improvement of soil quality and rice grain yield. Furthermore, our study provides a sustainable nutrient management plan to increase rice yield with high N use efficiency.", "corpus_id": 222214297, "venue": "PloS one", "year": 2020, "author_names": [ "Anas Iqbal", "Liang He", "Izhar Ali", "Saif Ullah", "Ahmad Sattar Khan", "Aziz Khan", "Kashif Akhtar", "Shangqin Wei", "Quan Zhao", "Jibiao Zhang", "Ligeng Jiang" ], "n_citations": 12, "n_key_citations": 0, "score": 1 }, { "doc_id": "216216223", "title": "Emergy evaluation and economic analysis of compound fertilizer production: A case study from China", "abstract": "Abstract The compound fertilizer market has an increasing share in the Chinese chemical fertilizer consumption. However, this industry is challenged by the increasing use of nonrenewable resources and pollution emissions. Therefore, promoting the sustainability of this industry is urgent. This study proposes a combination of improved emergy analysis methods and an economic evaluation to comprehensively assess the compound fertilizer production. The proposed methods quantify the adverse effects of pollution emissions and the effect of one subsystem on the integrated system. A case study was conducted on a compound fertilizer enterprise in the Jiangxi Province of China and the following conclusions were drawn: 97.82% of the emergy input to the system comes from the nonrenewable resources (especially urea and ammonium dihydrogen phosphate) the ecological services and emergy loss derived from pollution discharge, mainly from HCl gas and dust emissions, reach 7.68E+17 sej/yr and 5.76E+17 sej/yr, respectively, which reduce the environmental sustainability level of the integrated system by 0.03% the improved emergy sustainability index values of the integrated system and its subsystems range between 0.0203 0.0228, which indicates their long term unsustainability; the nitro water soluble fertilizer subsystem has the largest adverse effect on the sustainability of the enterprise (0.24) the environmental contribution is far underestimated by 78 98% in the prices of the four kinds of fertilizers investigated in this study; the sulfur based fertilizer subsystem has the highest economic benefit (net economic benefit ratio 0.31) but the least environmental sustainability (improved emergy sustainability index 0.0203) among the four subsystems. Finally, this study proposes promoting green procurement of main raw materials, optimizing the existing processes, improving the environmental performance of the sulfur based fertilizer subsystem, and increasing the prices of compound fertilizers.", "corpus_id": 216216223, "venue": "", "year": 2020, "author_names": [ "Yuhong Chen", "Xiaohong Zhang", "Xiangdong Yang", "Yanfeng Lv", "Jun Wu", "Lili Lin", "Yanzong Zhang", "Guiyin Wang", "Yin-long Xiao", "Xuemei Zhu", "Xiaoyu Yu", "Hong Peng" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "216209262", "title": "Developing a Sustainable Management Strategy for Quantitative Estimation of Optimum Nitrogen Fertilizer Recommendation Rates for Maize in Northeast China", "abstract": "Excessive application of chemical fertilizers has caused a series of environmental problems, including environmental pollution. Quantitative estimation of a sustainable fertilizer recommendation rate is paramount for formulating fertilizer management strategies to improve productivity of low yield regions and to prevent environmental damage. In this study, the database was drawn from 31 experimental sites in the main maize production region of Northeast China, during the period 2009 to 2013, to study the relationships between yield factors and nitrogen application rates, and to explore sustainable nitrogen (N) fertilizer recommendation rates based on analysis using the fertilizer response model. The fertilizer response model method is a technique that can provide effective performance predictions for the estimation of the optimum crop balanced fertilizer rates in varied agricultural regions. Results revealed that the average grain yield in treatment of N180 (the amount of nitrogen application rate was 90 kg ha 1) was highest, and the yield increase rate ranged from 4.77% to 58.53% with an average of 25.89% The sequence of grain yields in each treatment receiving N fertilizer management from high to low was: N180 N270 N90 in all the regions. The agronomic efficiency for applied N in N90, N180, N270 treatments was 11.8, 10.8, and 4.6 kg kg 1, respectively. The average optimum N fertilizer recommendation rate in Liaoning province was 180.4 kg ha 1, and the predicted optimum yield ranged between 7908.7 and 12,153.9 kg ha 1, with an average of 9699.1 kg ha 1. The mean optimum N fertilizer recommendation rate in western (WL) central and southern (SCL) eastern (EL) and northern (NL) of Liaoning province were 184.2, 177.2, 163.5, and 192.5 kg ha 1, and the average predicted optimum yields were 8785.3, 10,630.3, 9347, and 9942.4 kg ha 1. This study analyzed the spatial distribution of optimum fertilizer recommendation rates and the corresponding theoretical yield based on a large database, which helped to develop effective and environment friendly N management strategies for sustainable production systems.", "corpus_id": 216209262, "venue": "", "year": 2020, "author_names": [ "Wenting Jiang", "Yin Xing", "Xiukang Wang", "Xiaohu Liu", "Zhigang Cui" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "224894624", "title": "Driving forces and future trends on total nitrogen loss of planting in China.", "abstract": "Nitrogen production is one of the major aspects of global change over the past century. Nowhere is this change more dramatic than in China. Understanding the variations and driving forces of nitrogen loss from planting is critical to the sustainable development of Chinese agriculture. Here we found total nitrogen (TN) loss of China showed an overall downward trend from 2007 to 2016, as a result of abatement strategies for China on \"Soil Testing and Formula Fertilization\" and \"Reducing Fertilizer Application while Increase the Efficiency\" based on the data of National Agricultural Pollution Survey. The results of structural equation model showed that the path coefficient of anthropogenic drivers and natural conditions on TN loss were 0.934 and 0.137 respectively, suggesting that anthropogenic drivers had greater effects on TN loss than natural conditions. In terms of anthropogenic drivers, fertilizer usage and consumption of chemical pesticides were the two major factors affecting TN loss with path coefficients of 0.958 and 0.946, respectively, which was mainly related to their over application. For natural conditions, relative humidity, water supply situation, and annual precipitation were found to be the dominant factors affecting TN loss, revealing that moist soils increased TN loss by enhancing ammonia volatilization, denitrification and nitrogen leaching. Forecasts for 2050, under two scenarios especially for the high TN loss scenario, the indication sifts that China will face a high risk of increasing TN loss from planting, suggesting that China's abatement strategies cannot be slackened. Here, the current status and future trends of China's nitrogen loss provide direction and pertinence to Chinese abatement strategies for nitrogen, effectively preventing and controlling agricultural non point source pollution.", "corpus_id": 224894624, "venue": "Environmental pollution", "year": 2020, "author_names": [ "Liu Liyuan", "Zheng Xiang-qun", "Peng Chengfeng", "Liang Junyi", "Xu Yan" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "211077585", "title": "Nitrogen and phosphorus runoff losses were influenced by chemical fertilization but not by pesticide application in a double rice cropping system in the subtropical hilly region of China.", "abstract": "As one of the important nitrogen (N) and phosphorus (P) pollution sources of waters, the paddy water N and P runoff losses are still poorly understood in the double rice cropping system under the interaction of chemical fertilizer and pesticide. In the subtropical hilly region of China, we conducted a 1.5 year continuous and high frequency monitoring of paddy water N and P concentrations, runoff N and P losses, and grain yield in a double rice cropping system with different chemical fertilizer and pesticide application rates. The results showed that the high risk periods for N loss were in the first 5 days after the base fertilizer (BF) application and the first 10 days after the topdressing fertilizer application in both early and late rice seasons, while the high risk periods for P loss were in the first 5 days after BF application in the early rice season and the first 15 days after BF application in the late rice season. The N and P runoff losses in the early rice season were greater than those in the late rice season, due to that the N and P fertilizers use efficiencies were lower, and thus paddy water N and P concentrations were higher in the early rice season. The paddy N and P concentrations and N and P runoff losses increased significantly with increased fertilizer application rates, while the pesticide application rate did not significantly affect N and P losses. Therefore, special effects (e.g. avoiding high irrigation, fertilizer deep application) should be taken during the high risk periods of N and P losses to reduce the N and P runoff losses in the double rice cropping system, especially in the early rice season. There are also potentials to reduce fertilizer and pesticide input without reducing rice grain yield for the double rice cropping system in the subtropical hilly region of China.", "corpus_id": 211077585, "venue": "The Science of the total environment", "year": 2020, "author_names": [ "Ji Lai Liu", "Xiuqin Ouyang", "Jianlin Shen", "Yan Li", "Wan-chun Sun", "Wenqian Jiang", "Jinshui Wu" ], "n_citations": 13, "n_key_citations": 0, "score": 0 }, { "doc_id": "228090092", "title": "Groundwater Chemical Characteristics and Controlling Factors in a Region of Northern China with Intensive Human Activity", "abstract": "The identification of groundwater chemical characteristics and the controlling factors is of major concern in water environment studies. In this study, we identified the groundwater chemical characteristics, evolution laws and main control factors in a region severely affected by human activities using hydrochemical and multivariate statistical techniques. The results showed that the concentrations of NO3 and TH were the primary pollution factors in the region with intensive human activity because of high concentration and over the standard rates. The major types of groundwater chemistry were HCO3*SO4 Ca and HCO3*SO4 Ca*Mg. The sulfate type water was as high as 75.0% 69.2% and 41.2% in the three hydrogeological units. In addition, there were Cl type and Na type waters, indicating that the groundwater in this area has been significantly affected by human activities. A principal component analysis (PCA) indicated that the three factors affecting groundwater hydrochemistry in the study area are domestic sewage and fertilizer, water rock interactions and industrial wastewater. Therefore, we suggest that the government and water environment management departments should prevent the discharge of domestic and industrial wastewater without standardized treatment first in order to effectively prevent the further deterioration of groundwater quality in this area.", "corpus_id": 228090092, "venue": "International journal of environmental research and public health", "year": 2020, "author_names": [ "Chaobin Ren", "Qianqian Zhang" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "219003717", "title": "A comprehensive framework for assessing the impact of potential agricultural pollution on grain security and human health in economically developed areas", "abstract": "Abstract Agricultural pollution poses a considerable challenge to grain security and human health, especially in economically developed areas. Mineral exploitation, chemical enterprise operation, pesticide and fertilizer application, sewage discharge, and vehicle emissions are the pollution sources of agricultural land. Identifying and assessing potential agricultural pollution (PAP) is, therefore, the most urgent task to achieve grain security and the human health. Large scale (e.g. regional or national) PAP assessment can be very expensive, which could also generate a certain amount of information that usually discourages evaluation by decision makers. To identify areas for regional priority investigation, here we proposed an assessment framework for PAP in economically developed areas. The framework consisted of PAP assessment, vulnerability assessment, hazard assessment, and socio economic assessment. Then, we conducted a case study by using the proposed framework in one of China's economically developed areas, Zhejiang Province. The results showed that PAP, especially soil heavy metal pollution, soil acidification, and surface water pollution involved almost the entire study area. High vulnerability high hazard areas were mainly associated with high socio economic development or high grain yield. These areas had negatively affected grain security and increased carcinogenic risk, potentially contributing to the formation of cancer villages. Based on the results, we proposed measures for environmental risk managers to alleviate the impact of PAP on grain security and human health in economically developed areas.", "corpus_id": 219003717, "venue": "", "year": 2020, "author_names": [ "Yefeng Jiang", "Songchao Chen", "Bifeng Hu", "Yin Zhou", "Zongzheng Liang", "Xiaolin Jia", "Mingxiang Huang", "Jing Wei", "Zhou Shi" ], "n_citations": 10, "n_key_citations": 1, "score": 0 } ]

[ { "doc_id": "218502606", "title": "Neural Syntactic Preordering for Controlled Paraphrase Generation", "abstract": "Paraphrasing natural language sentences is a multifaceted process: it might involve replacing individual words or short phrases, local rearrangement of content, or high level restructuring like topicalization or passivization. Past approaches struggle to cover this space of paraphrase possibilities in an interpretable manner. Our work, inspired by pre ordering literature in machine translation, uses syntactic transformations to softly \"reorder\" the source sentence and guide our neural paraphrasing model. First, given an input sentence, we derive a set of feasible syntactic rearrangements using an encoder decoder model. This model operates over a partially lexical, partially syntactic view of the sentence and can reorder big chunks. Next, we use each proposed rearrangement to produce a sequence of position embeddings, which encourages our final encoder decoder paraphrase model to attend to the source words in a particular order. Our evaluation, both automatic and human, shows that the proposed system retains the quality of the baseline approaches while giving a substantial increase in the diversity of the generated paraphrases.", "corpus_id": 218502606, "venue": "ACL", "year": 2020, "author_names": [ "Tanya Goyal", "Greg Durrett" ], "n_citations": 32, "n_key_citations": 2, "score": 1 }, { "doc_id": "220046054", "title": "Paraphrase Generation by Learning How to Edit from Samples", "abstract": "Neural sequence to sequence text generation has been proved to be a viable approach to paraphrase generation. Despite promising results, paraphrases generated by these models mostly suffer from lack of quality and diversity. To address these problems, we propose a novel retrieval based method for paraphrase generation. Our model first retrieves a paraphrase pair similar to the input sentence from a pre defined index. With its novel editor module, the model then paraphrases the input sequence by editing it using the extracted relations between the retrieved pair of sentences. In order to have fine grained control over the editing process, our model uses the newly introduced concept of Micro Edit Vectors. It both extracts and exploits these vectors using the attention mechanism in the Transformer architecture. Experimental results show the superiority of our paraphrase generation method in terms of both automatic metrics, and human evaluation of relevance, grammaticality, and diversity of generated paraphrases.", "corpus_id": 220046054, "venue": "ACL", "year": 2020, "author_names": [ "Amirhossein Kazemnejad", "Mohammadreza Salehi", "Mahdieh Soleymani Baghshah" ], "n_citations": 16, "n_key_citations": 3, "score": 1 }, { "doc_id": "222291619", "title": "Reformulating Unsupervised Style Transfer as Paraphrase Generation", "abstract": "Modern NLP defines the task of style transfer as modifying the style of a given sentence without appreciably changing its semantics, which implies that the outputs of style transfer systems should be paraphrases of their inputs. However, many existing systems purportedly designed for style transfer inherently warp the input's meaning through attribute transfer, which changes semantic properties such as sentiment. In this paper, we reformulate unsupervised style transfer as a paraphrase generation problem, and present a simple methodology based on fine tuning pretrained language models on automatically generated paraphrase data. Despite its simplicity, our method significantly outperforms state of the art style transfer systems on both human and automatic evaluations. We also survey 23 style transfer papers and discover that existing automatic metrics can be easily gamed and propose fixed variants. Finally, we pivot to a more real world style transfer setting by collecting a large dataset of 15M sentences in 11 diverse styles, which we use for an in depth analysis of our system.", "corpus_id": 222291619, "venue": "EMNLP", "year": 2020, "author_names": [ "Kalpesh Krishna", "John Wieting", "Mohit Iyyer" ], "n_citations": 34, "n_key_citations": 9, "score": 1 }, { "doc_id": "195345094", "title": "Decomposable Neural Paraphrase Generation", "abstract": "Paraphrasing exists at different granularity levels, such as lexical level, phrasal level and sentential level. This paper presents Decomposable Neural Paraphrase Generator (DNPG) a Transformer based model that can learn and generate paraphrases of a sentence at different levels of granularity in a disentangled way. Specifically, the model is composed of multiple encoders and decoders with different structures, each of which corresponds to a specific granularity. The empirical study shows that the decomposition mechanism of DNPG makes paraphrase generation more interpretable and controllable. Based on DNPG, we further develop an unsupervised domain adaptation method for paraphrase generation. Experimental results show that the proposed model achieves competitive in domain performance compared to state of the art neural models, and significantly better performance when adapting to a new domain.", "corpus_id": 195345094, "venue": "ACL", "year": 2019, "author_names": [ "Zichao Li", "Xin Jiang", "Lifeng Shang", "Qun Liu" ], "n_citations": 40, "n_key_citations": 13, "score": 1 }, { "doc_id": "12737290", "title": "A Deep Generative Framework for Paraphrase Generation", "abstract": "Paraphrase generation is an important problem in NLP, especially in question answering, information retrieval, information extraction, conversation systems, to name a few. In this paper, we address the problem of generating paraphrases automatically. Our proposed method is based on a combination of deep generative models (VAE) with sequence to sequence models (LSTM) to generate paraphrases, given an input sentence. Traditional VAEs when combined with recurrent neural networks can generate free text but they are not suitable for paraphrase generation for a given sentence. We address this problem by conditioning the both, encoder and decoder sides of VAE, on the original sentence, so that it can generate the given sentence's paraphrases. Unlike most existing models, our model is simple, modular and can generate multiple paraphrases, for a given sentence. Quantitative evaluation of the proposed method on a benchmark paraphrase dataset demonstrates its efficacy, and its performance improvement over the state of the art methods by a significant margin, whereas qualitative human evaluation indicate that the generated paraphrases are well formed, grammatically correct, and are relevant to the input sentence. Furthermore, we evaluate our method on a newly released question paraphrase dataset, and establish a new baseline for future research.", "corpus_id": 12737290, "venue": "AAAI", "year": 2018, "author_names": [ "Ankush Gupta", "Arvind Agarwal", "Prawaan Singh", "Piyush Rai" ], "n_citations": 151, "n_key_citations": 32, "score": 1 }, { "doc_id": "221103638", "title": "Paraphrase Generation as Zero Shot Multilingual Translation: Disentangling Semantic Similarity from Lexical and Syntactic Diversity", "abstract": "Recent work has shown that a multilingual neural machine translation (NMT) model can be used to judge how well a sentence paraphrases another sentence in the same language (Thompson and Post, 2020) however, attempting to generate paraphrases from such a model using standard beam search produces trivial copies or near copies. We introduce a simple paraphrase generation algorithm which discourages the production of n grams that are present in the input. Our approach enables paraphrase generation in many languages from a single multilingual NMT model. Furthermore, the amount of lexical diversity between the input and output can be controlled at generation time. We conduct a human evaluation to compare our method to a paraphraser trained on the large English synthetic paraphrase database ParaBank 2 (Hu et al. 2019c) and find that our method produces paraphrases that better preserve meaning and are more gramatical, for the same level of lexical diversity. Additional smaller human assessments demonstrate our approach also works in two non English languages.", "corpus_id": 221103638, "venue": "WMT", "year": 2020, "author_names": [ "Brian Thompson", "Matt Post" ], "n_citations": 12, "n_key_citations": 1, "score": 0 }, { "doc_id": "211572789", "title": "Metaphoric Paraphrase Generation", "abstract": "This work describes the task of metaphoric paraphrase generation, in which we are given a literal sentence and are charged with generating a metaphoric paraphrase. We propose two different models for this task: a lexical replacement baseline and a novel sequence to sequence model, 'metaphor masking' that generates free metaphoric paraphrases. We use crowdsourcing to evaluate our results, as well as developing an automatic metric for evaluating metaphoric paraphrases. We show that while the lexical replacement baseline is capable of producing accurate paraphrases, they often lack metaphoricity, while our metaphor masking model excels in generating metaphoric sentences while performing nearly as well with regard to fluency and paraphrase quality.", "corpus_id": 211572789, "venue": "ArXiv", "year": 2020, "author_names": [ "Kevin Stowe", "Leonardo Ribeiro", "Iryna Gurevych" ], "n_citations": 6, "n_key_citations": 4, "score": 1 }, { "doc_id": "214090353", "title": "Integrating Linguistic Knowledge to Sentence Paraphrase Generation", "abstract": "Paraphrase generation aims to rewrite a text with different words while keeping the same meaning. Previous work performs the task based solely on the given dataset while ignoring the availability of external linguistic knowledge. However, it is intuitive that a model can generate more expressive and diverse paraphrase with the help of such knowledge. To fill this gap, we propose Knowledge Enhanced Paraphrase Network (KEPN) a transformer based framework that can leverage external linguistic knowledge to facilitate paraphrase generation. (1) The model integrates synonym information from the external linguistic knowledge into the paraphrase generator, which is used to guide the decision on whether to generate a new word or replace it with a synonym. (2) To locate the synonym pairs more accurately, we adopt an incremental encoding scheme to incorporate position information of each synonym. Besides, a multi task architecture is designed to help the framework jointly learn the selection of synonym pairs and the generation of expressive paraphrase. Experimental results on both English and Chinese datasets show that our method significantly outperforms the state of the art approaches in terms of both automatic and human evaluation.", "corpus_id": 214090353, "venue": "AAAI", "year": 2020, "author_names": [ "Zibo Lin", "Ziran Li", "Ning Ding", "Haitao Zheng", "Ying Shen", "Wei Wang", "Cong-Zhi Zhao" ], "n_citations": 2, "n_key_citations": 1, "score": 0 }, { "doc_id": "227230260", "title": "Data Efficient Paraphrase Generation to Bootstrap Intent Classification and Slot Labeling for New Features in Task Oriented Dialog Systems", "abstract": "Recent progress through advanced neural models pushed the performance of task oriented dialog systems to almost perfect accuracy on existing benchmark datasets for intent classification and slot labeling. However, in evolving real world dialog systems, where new functionality is regularly added, a major additional challenge is the lack of annotated training data for such new functionality, as the necessary data collection efforts are laborious and time consuming. A potential solution to reduce the effort is to augment initial seed data by paraphrasing existing utterances automatically. In this paper, we propose a new, data efficient approach following this idea. Using an interpretation to text model for paraphrase generation, we are able to rely on existing dialog system training data, and, in combination with shuffling based sampling techniques, we can obtain diverse and novel paraphrases from small amounts of seed data. In experiments on a public dataset and with a real world dialog system, we observe improvements for both intent classification and slot labeling, demonstrating the usefulness of our approach.", "corpus_id": 227230260, "venue": "COLING", "year": 2020, "author_names": [ "Shailza Jolly", "Tobias Falke", "Caglar Tirkaz", "Daniil Sorokin" ], "n_citations": 2, "n_key_citations": 0, "score": 0 }, { "doc_id": "220480926", "title": "Exploring Bilingual Parallel Corpora for Syntactically Controllable Paraphrase Generation", "abstract": "Paraphrase generation is of great importance to many downstream tasks in natural language processing. Recent efforts have focused on generating paraphrases in specific syntactic forms, which, generally, heavily relies on manually annotated paraphrase data that is not easily available for many languages and domains. In this paper, we propose a novel end to end framework to leverage existing large scale bilingual parallel corpora to generate paraphrases under the control of syntactic exemplars. In order to train one model over the two languages of parallel corpora, we embed sentences of them into the same content and style spaces with shared content and style encoders using cross lingual word embeddings. We propose an adversarial discriminator to disentangle the content and style space, and employ a latent variable to model the syntactic style of a given exemplar in order to guide the two decoders for generation. Additionally, we introduce cycle and masking learning schemes to efficiently train the model. Experiments and analyses demonstrate that the proposed model trained only on bilingual parallel data is capable of generating diverse paraphrases with desirable syntactic styles. Fine tuning the trained model on a small paraphrase corpus makes it substantially outperform state of the art paraphrase generation models trained on a larger paraphrase dataset.", "corpus_id": 220480926, "venue": "IJCAI", "year": 2020, "author_names": [ "Mingtong Liu", "Erguang Yang", "Deyi Xiong", "Yujie Zhang", "Chen Sheng", "Changjian Hu", "Jinan Xu", "Yufeng Chen" ], "n_citations": 4, "n_key_citations": 1, "score": 0 } ]

[ { "doc_id": "202766820", "title": "From free to paid: Customer expertise and customer satisfaction on knowledge payment platforms", "abstract": "Abstract In this study, we investigate what factors are influential to customer satisfaction of paid knowledge, especially among different customer segments, by integrating user activities on both free and paid platforms. Considering the complexity of knowledge acquisition, we first propose a novel measurement of \"customer expertise\" based on text mining, as a criterion for customer segmentation. Drawing upon the value percept diversity theory, we then postulate a conceptual model proposing that customers with different expertise would react differently to the price of knowledge and historical knowledge consuming transactions, in terms of customer satisfaction. We test the model empirically through the hierarchical OLS regression with data collected from Zhihu and Zhihu Live. Distinguishing expert and novice customers, we have findings that (1) expert customers are less sensitive to price; (2) historical price positively influences the satisfaction of novice customers, but negatively for expert customers; (3) expert customers are less influenced by historical satisfaction, which have important implications for market targeting and knowledge pricing strategy.", "corpus_id": 202766820, "venue": "Decis. Support Syst.", "year": 2019, "author_names": [ "Jin Zhang", "Jilong Zhang", "Mingyue Zhang" ], "n_citations": 26, "n_key_citations": 0, "score": 1 }, { "doc_id": "199014016", "title": "Knowledge payment research: status quo and key issues", "abstract": "Purpose Knowledge sharing has entered the stage of knowledge payment with the typical models of paid Q&A, live session, paid subscription, course column and community service. Numerous knowledge suppliers have begun to pour into the knowledge payment market, and users' willingness to pay for premium content has increased. However, the academic research on knowledge payment has just begun. Design/methodology/approach In this paper, the authors searched several bibliographic databases using keywords such as \"knowledge payment\" \"paid Q&A\" \"pay for answer\" \"social Q&A\" \"paywall\" and \"online health consultation\" and selected papers from aspects of research scenes, research topics, etc. Finally, a total of 116 articles were identified for combing studies. Findings This study found that in the early research, scholars paid attention to the definition of knowledge payment concept and the discrimination of typical models. With the continuous enrichment of research literature, the research direction has gradually been refined into three main branches from the perspective of research objects, i.e. knowledge provider, knowledge demander and knowledge payment platform. Originality/value This paper focuses on discussing and sorting out the key research issues from these three research genres. Finally, the authors found out conflicting and contradictory research results and research gaps in the existing research and then put forward the urgent research topics.", "corpus_id": 199014016, "venue": "International Journal of Crowd Science", "year": 2019, "author_names": [ "Tuotuo Qi", "Tianmei Wang", "YanLin Ma", "Xinxue Zhou" ], "n_citations": 5, "n_key_citations": 0, "score": 1 }, { "doc_id": "204490409", "title": "Research on Knowledge Payment Willingness and Its Influencing Factors", "abstract": "Knowledge payment has been known by more and more people since 2016. What is the willingness of people to pay for knowledge in the current environment? What are the influencing factors of willingness to pay for knowledge? This is the content of this study. In this study, factor analysis is used to classify the factors affecting knowledge payment into perceived usefulness, perceived ease of use, perceived risk and subjective norms. The results show that these four factors have a positive impact on the willingness to pay for knowledge.", "corpus_id": 204490409, "venue": "DEStech Transactions on Economics, Business and Management", "year": 2019, "author_names": [ "Yu-Jia Liu", "Juan Yang" ], "n_citations": 0, "n_key_citations": 0, "score": 2 }, { "doc_id": "204728857", "title": "An Empirical Research on the Effect of Free Knowledge in the Knowledge Payment Platform", "abstract": "With the advent of the era of knowledge payment, more and more online knowledge platforms are starting to offer knowledge that is paid for. This paper studies the effects of free knowledge on the number of purchase of paid knowledge from the perspective of content carrier platform. We collect the real data about free and paid knowledge from the largest Q&A platform in China. Then the hierarchical regression models are used to analyze the effects of the popularity of free knowledge on paid knowledge. We also examine the moderating effects of type and price of paid knowledge. The results of our study show that the number of questions and most relevant content of free knowledge have significant effects on the number of purchase of paid knowledge. Paid knowledge of audio type is more affected by the number of questions and most relevant content of free knowledge than paid knowledge of video type. And the price of paid knowledge strengthens the negative effect of most relevant content of free knowledge on it. The experiments are based on real world large scale data sets, providing data driven decision support for the management of free and paid knowledge in online knowledge platforms.", "corpus_id": 204728857, "venue": "IMMS 2019", "year": 2019, "author_names": [ "Xiaowen Zhu", "Wei Zhang" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "164227221", "title": "Construction and analysis of campus knowledge payment platform under the wave of big data", "abstract": "With the increasing popularity of the network information age, \"big data\" emerging at the historic moment, has become the hottest IT industry vocabulary. In this context, the application of big data technology plays an important role in the construction of campus knowledge payment platform. Therefore, this paper is dedicated to studying the technical support for the construction of campus knowledge payment platform and the influence of big data on the platform construction, so as to promote the platform technology upgrade and optimize the platform management.", "corpus_id": 164227221, "venue": "Journal of Physics: Conference Series", "year": 2019, "author_names": [ "Ran Wu", "Qiong Wu" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "202786026", "title": "Analysis and Research on Operating Mode of Voice Platform Based on Knowledge Payment", "abstract": "In order to fully understand the current operating mode of the voice based knowledge payment platform to discuss the future development trend of the voice based knowledge payment, a preliminary analysis of the current mature knowledge payment platform operation mode in China is conducted through case analysis, comparative analysis, literature analysis, observation method, and other methods combined with Newcomb A B X balance model and Maletsk's \"CMR\" model, thereby providing reasonable suggestions for the development of a voice knowledge payment platform. The results show that as a new knowledge dissemination model, the new knowledge payment based voice platform has specific innovations in terms of content production and communication structure. Its primary operation mode is to obtain the continuous consumption of users through the improvement of the three aspects of product quality and payment, mode, and traffic import. In summary, knowledge payment has changed the traditional way and ability to acquire knowledge, opened new ways to acquire knowledge, and provided new choices for users to learn knowledge. In the future, the development of the demand for knowledge payment is inseparable from the renewal of new technologies and the improvement of services. Paying attention to tail content, strengthening sociality and introducing new technologies are particularly important for the development of the platform. The trinity of content, social interaction and scenario also contribute to the healthy development of knowledge payment market.", "corpus_id": 202786026, "venue": "", "year": 2019, "author_names": [ "Jing Jia" ], "n_citations": 1, "n_key_citations": 0, "score": 1 }, { "doc_id": "197882043", "title": "Chapter 14 A Research on the Development Trend of Knowledge Payment Based on Zhihu", "abstract": "Abstract Recently, sharing economy is gradually accepted by people, and it has expanded from life to knowledge. It is important to encourage people to produce high quality content in knowledge sharing area, and knowledge payment is one of the most effective ways to achieve it. Therefore, the knowledge payment has been regarded as a huge business opportunity, and it is of great meaning to study the development trend and feasibility of knowledge payment. This chapter, through big data methods, analyzes the business model of Zhihu (a Chinese platform of knowledge sharing) after it introduced knowledge payment projects, such as Zhihu Live and Pay Consultation. According to data of Zhihu users' Q&A, concerned fields and others, this chapter tries to outline its user profile to find out the target groups of different topics, the proper form of knowledge payment and the hot topics of Zhihu Live. Through the analysis of knowledge graph, this chapter finds that Zhihu Live is expected to be the mainstream knowledge payment form in the future, and the most potential topics are mainly focused on science, law, and business. Meanwhile, it establishes a pricing model for Zhihu Live, and provides suggestions for the development of knowledge payment.", "corpus_id": 197882043, "venue": "The New Silk Road Leads through the Arab Peninsula: Mast ering Global Business and Inovation", "year": 2019, "author_names": [ "Jingjing Wang", "Zhiqiang Li", "Huanhuan Feng", "Yuanjing Guo", "Zheng Liang", "Luyao Wang", "Xing Wan", "Yalin Wang" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "209900898", "title": "The Study of Charging Mechanism of Knowledge Payment Platform Based on Tripartite Game Model", "abstract": "As a new form of sharing economy, knowledge payment market has developed rapidly in recent years. A reasonable and effective charging mechanism can coordinate the interest relationship between knowledge payment platform and users, maximize the interests of all parties, and promote the sustainable and healthy development of knowledge transaction. This paper constructs a tripartite game model with knowledge demanders, knowledge suppliers and knowledge payment platform as the main body, compares the effects of the quality level of knowledge product} the price of knowledge product, the level of value added service and the proportion of transaction commission fees on the decision making of each game subject. First, knowledge demanders will make purchasing decisions when the marginal utility of money is equal to the marginal utility of quality. At this time, the total utility of knowledge demanders is the largest. Second, in order to increase profits, knowledge suppliers will improve the quality level of knowledge products and price high quality knowledge products with the willingness of knowledge demanders. And knowledge suppliers will purchase value added services that will maximize their profits. Third, the knowledge payment platform will maximize its own benefits by increasing the influence on the purchasing behavior of knowledge demanders, improving the efficiency of value added services, and implementing the commission differential charging for knowledge suppliers.", "corpus_id": 209900898, "venue": "2019 International Conference on Industrial Engineering and Systems Management (IESM)", "year": 2019, "author_names": [ "Xing Zhang", "Jiangbo Chang" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "169067766", "title": "Research on the Influencing Factors of the Willingness to Pay for Knowledge Consumers in the Knowledge Payment Platform", "abstract": "", "corpus_id": 169067766, "venue": "WHICEB", "year": 2018, "author_names": [ "Xinyan Liu", "Jun Feng" ], "n_citations": 3, "n_key_citations": 0, "score": 0 }, { "doc_id": "70006234", "title": "An Empirical Study of the Impacts of Perceived Security and Knowledge on Continuous Intention to Use Mobile Fintech Payment Services", "abstract": "ABSTRACT Financial technology (Fintech) services using emerging technology such as the Internet of Things (IoT) is becoming more prevalent. The recent proliferation of the mobile payment sector led by innovative mobile Fintech payment services such as Apple Pay and Samsung Pay is the most important and fastest growing Fintech services from consumers' perspective. Although businesses have been making efforts to spread the use of the services, security is crucial in the diffusion of the services. Despite the importance, the role of perceived security in continuous intention to use mobile, Fintech services has not yet been investigated in depth. Thus, this study investigates the relationships between perceived security, knowledge regarding the services, confirmation, perceived usefulness, and satisfaction. We propose a research model using an extended post acceptance model (EPAM) as a theoretical framework in the context of Fintech services. We then validate the model using the data collected from the service users. The analyzed results show that knowledge and perceived security in mobile Fintech services have a significant influence on users' confirmation and perceived usefulness. However, perceived security does not directly influence users' satisfaction and continual intention to use. We further find significant relationships among confirmation, perceived usefulness, satisfaction, and continual intention to use of the services. We discuss theoretical and practical contributions of the study.", "corpus_id": 70006234, "venue": "Int. J. Hum. Comput. Interact.", "year": 2019, "author_names": [ "Se Hun Lim", "Dan J Kim", "Yeon Hur", "Kunsu Park" ], "n_citations": 41, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "34609278", "title": "Attacking the Empty: People's Republic of China Foreign Missile Technology Acquisition and Implications on Future Technology Bans", "abstract": "Abstract The People's Republic of China (PRC) has improved its surface to surface missile capabilities over the last decade by acquiring foreign missile technology. Despite bans on the importation of missile related items, the People's Liberation Army (PLA) has integrated foreign technology into existing missile systems. The PLA has gained a military advantage over Taiwan and the United States due to a lack of missile defense systems to counter missile attacks. In the coming decade, the application of precision will further enhance missile capabilities. By understanding the impact of technology integration, the central question is whether a future ban on precision technology will affect the PLA s missile capabilities. By analyzing the PLA s advanced missile programs, an assessment is made on what these programs will be used for and what precision related items these programs require. Second, an analysis is made on what precision subsystems these programs lack and will likely be sought. Third, an assessment is made regarding the PRC s missile capabilities against current and future missile defenses developed by the United States and Taiwan. In conclusion, a missile gap exists that favors the PRC; however, precision technology is required to maintain this advantage and a future ban on certain technology would close this gap.", "corpus_id": 34609278, "venue": "", "year": 2012, "author_names": [ "Charles T Duray" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "82456167", "title": "Janeway's immunobiology", "abstract": "Part I An Introduction to Immunobiology and Innate Immunity 1. Basic Concepts in Immunology 2. Innate Immunity Part II The Recognition of Antigen 3. Antigen Recognition by B cell and T cell Receptors 4. The Generation of Lymphocyte Antigen Receptors 5. Antigen Presentation to T Lymphocytes Part III The Development of Mature Lymphocyte Receptor Repertoires 6. Signaling Through Immune System Receptors 7. The Development and Survival of Lymphocytes Part IV The Adaptive Immune Response 8. T Cell Mediated Immunity 9. The Humoral Immune Response 10. Dynamics of Adaptive Immunity 11. The Mucosal Immune System Part V The Immune System in Health and Disease 12. Failures of Host Defense Mechanism 13. Allergy and Hypersensitivity 14. Autoimmunity and Transplantation 15. Manipulation of the Immune Response Part VI The Origins of Immune Responses 16. Evolution of the Immune System Appendix I Immunologists' Toolbox Appendix II CD Antigens Appendix III Cytokines and their Receptors Appendix IV Chemokines and their Receptors Appendix V Immunological Constants", "corpus_id": 82456167, "venue": "", "year": 2007, "author_names": [ "Kenneth P Murphy", "Casey T Weaver", "Allan Mcl Mowat", "Leslie J Berg", "David D Chaplin", "Charles A Jr Janeway", "Paul Travers", "Mark J Walport" ], "n_citations": 2059, "n_key_citations": 285, "score": 1 }, { "doc_id": "15252590", "title": "Development of NASA TLX (Task Load Index) Results of Empirical and Theoretical Research", "abstract": "Abstract The results of a multi year research program to identify the factors associated with variations in subjective workload within and between different types of tasks are reviewed. Subjective evaluations of 10 workload related factors were obtained from 16 different experiments. The experimental tasks included simple cognitive and manual control tasks, complex laboratory and supervisory control tasks, and aircraft simulation. Task behavior and subject related correlates of subjective workload experiences varied as a function of difficulty manipulations within experiments, different sources of workload between experiments, and individual differences in workload definition. A multi dimensional rating scale is proposed in which information about the magnitude and sources of six workload related factors are combined to derive a sensitive and reliable estimate of workload.", "corpus_id": 15252590, "venue": "", "year": 1988, "author_names": [ "S G Hart", "Lowell E Staveland" ], "n_citations": 9537, "n_key_citations": 1257, "score": 1 }, { "doc_id": "141909282", "title": "The Subjective Workload Assessment Technique: A Scaling Procedure for Measuring Mental Workload", "abstract": "Mental workload is proposed to be a multidimensional construct that can be largely explained by three component factors: Time Load, Mental Effort Load, and Psychological Stress Load. In this paper, we describe a subjective scaling approach, the Subjective Workload Assessment Technique (SWAT) that captures this multidimensional nature of mental workload. We describe the SWAT procedure as a two phased method that includes (a) a scale development phase based on conjoint measurement and nonmetric scaling, and (b) an event scoring phase. The development of SWAT and its measurement foundations are discussed. Recent research illustrating SWAT's widespread utility and its sensitivity as a measure of perceived mental workload is summarized.", "corpus_id": 141909282, "venue": "", "year": 1988, "author_names": [ "Gary B Reid", "Thomas E Nygren" ], "n_citations": 661, "n_key_citations": 46, "score": 1 }, { "doc_id": "53132108", "title": "TERRAIN REFERENCED UAV NAVIGATION WITH LIDAR A COMPARISON OF SEQUENTAIL PROCESSING AND BATCH PROCESSING ALGORITHMS", "abstract": "This paper discusses terrain referenced navigation (TRN) system using light detection and ranging (LiDAR) and pressure altimeter in order to compensate for an Inertial Navigation system (INS) errors. The paper addresses sequential processing such as Sandia Inertial Terrain Aided Navigation (SITAN) and batch processing algorithms such as Digital Scene Matching Area Correlator (DSMAC) and carries out simulations with scenarios in order to compare the performance of these two processing algorithms and verify which one is more useful in each specific environment.", "corpus_id": 53132108, "venue": "", "year": 2012, "author_names": [ "Yeonha Hwang", "Min-Jea Tahk" ], "n_citations": 4, "n_key_citations": 0, "score": 0 }, { "doc_id": "113471789", "title": "Existing conventions and unmanned ships need for changes?", "abstract": "iv TABLE OF CONTENTS v LIST OF FIGURES viii LIST OF ABBREVIATIONS ix", "corpus_id": 113471789, "venue": "", "year": 2016, "author_names": [ "Tomotsugu Noma" ], "n_citations": 6, "n_key_citations": 0, "score": 2 }, { "doc_id": "127428295", "title": "A GPS inspired Terrain Referenced Navigation algorithm", "abstract": "Terrain Referenced Navigation (TRN) refers to a form of localization in which measurements of distances to the terrain surface are matched with a digital elevation map allowing a vehicle to estimate its own position within the map. The main goal of this dissertation is to improve TRN performance through better signal processing. More specifically, the project aims to explore opportunities in the field of TRN by using digital signal processing techniques that were originally developed for the acquisition and tracking of GPS signals. A typical TRN system uses speed, heading and time to establish the relative horizontal position between subsequent elevation measurements. Thus, any error in speed, heading or time will cause an error in the resulting relative position. If the speed or heading error contains a bias, this will cause a gradual reduction in the correlation. To prevent that a reduction in correlation causes the estimated position to drift away, the idea behind the research described in this thesis is the use of arrays of terrain elevation measurements with intentional (positive and negative) offsets in speed and heading in a tracking loop configuration. It is well known that such a concept works well for optimized signals such as the ones used in GPS. To further explore the viability of this idea for a signal defined by a series of terrain elevation measurements, an analysis of similarities and differences with the GPS signal is performed. In accordance to the GPS receiver approach, a novel correlation algorithm for TRN is proposed and implemented. The basic rationale for the algorithm is to use terrain correlation to \"acquire and track\" the speed and heading of the host vehicle, while the position advances are calculated using these estimates together with the previously determined position. The novelty of the approach consists in the implementation of a tracking scheme based on the DLL concept. To answer feasibility related questions, the algorithm is first evaluated in a purely theoretical framework. Based on this analysis it is concluded that the concept seems feasible and promising, but additional considerations in the design are required to compensate for the differences between the GPS and TRN signals. Enhancements are brought to the initial design resulting in the development of an adaptive tracking scheme, in which the tracking loops are configured based on an analysis of the terrain signal. Next, an in depth sensitivity analysis is carried out to understand how sensor measurement errors (in speed, heading and terrain height) impact the algorithm performance. The analysis is performed using exclusively simulated data. It is shown that sensitivity to speed and heading errors is dependent on terrain features and it is possible to assess the degree of sensitivity by analysing the terrain signal. By combining this information with the expected error characteristic of the navigation sensors, the performance of the algorithm can be predicted. The sensitivity to terrain measurement errors depends on the ratio between the terrain signal strength and the measurement errors. It is shown that this ratio can be predicted up to a certain extent and a method to improve the ratio is proposed and discussed. The developed capabilities are validated with recorded sensor data from flight tests. Two different types of recorded sensor data are used: radar and lidar based datasets.", "corpus_id": 127428295, "venue": "", "year": 2014, "author_names": [ "Dhadesugoor R Vaman" ], "n_citations": 3, "n_key_citations": 1, "score": 0 }, { "doc_id": "24236064", "title": "Aircraft navigation by means of image registration", "abstract": "Most aircraft, whether manned or unmanned, depend on the Global Positioning System (GPS) for navigation. However, GPS signals are susceptible to jamming and spoofing. A researcher recently demonstrated the use of spoofing to take control of a ship in the Mediterranean Sea. By feeding counterfeit signals to the ship, he was able to drive it far off course. All the time, the navigation system reported the vessel was moving calmly along its intended course. The same researcher also demonstrated the ability to spoof unmanned aerial vehicles (UAVs) The purpose of this paper is to demonstrate a navigation system that does not rely on GPS. The only sensor required is a digital camera. The system works by taking a photograph of the ground and georegistering it to a reference image or digital elevation model (DEM) with the GeoMI(tm) georegistration software. By transferring geospatial information from the DEM to the photo, the system calculates the position and orientation of the aircraft. The process is fast enough to perform in real time and suitable for use as a primary or backup navigation system for aircraft, UAVs, and cruise missiles. For nighttime navigation, the system could be extended to infrared or radar imagery. Experimental results show that navigation accuracies of 2 meters CE90 can be achieved.", "corpus_id": 24236064, "venue": "2013 IEEE Applied Imagery Pattern Recognition Workshop (AIPR)", "year": 2013, "author_names": [ "Mark D Pritt", "Kevin J LaTourette" ], "n_citations": 4, "n_key_citations": 1, "score": 2 }, { "doc_id": "22609382", "title": "A novel fast and accurate algorithm for Terrain Referenced UAV localization", "abstract": "Recently, unmanned aerial vehicles (UAVs) have become one of the most popular and promising means for both military and civilian posts and academic research areas. Localization of the UAVs and persistent tracking of a UAV have vital importance to provide a UAV with navigation information and help to cope with getting lost permanently. Indeed, Inertial Navigation System (INS) and Global Positioning System (GPS) seem to be adequate for navigation of UAVs. However, an alternative augmented navigation system for UAVs should be taken into consideration since INS has accumulated errors and GPS always has the possibility of jamming and satellite signal loss. Terrain Referenced Navigation (TRN) could be a good alternative as a decision support system for these main systems. This study aims to detect the location of a lost or GPS disabled UAV throughout a planned flight by using only the terrain data. In addition, assumptions and limitations are minimized for the sake of simplifying the process to apply this methodology on a real UAV in the future, e.g. flight through all directions with physically possible turn rates is allowed. In order to provide data of the terrain, Digital Elevation Model (DEM) of the flight region with 30m resolution is exploited. The proposed method is based on searching and matching the collected elevation values of the terrain below UAV within the DEM and makes use of simulation techniques to test the accuracy and performance. The whole algorithm utilizes a sequence of elevation values with a predefined length (i.e. profile) Mainly, all possible profiles are generated before the flight and stored in a huge search space. We identify, sort and classify these elevation profiles in order to perform search operations in a small subset of the huge set. During the flight, a sequence of terrain elevations, which is computed with the help of radar and barometric altimeter measurements, is searched within a small neighborhood of corresponding profile set.", "corpus_id": 22609382, "venue": "2013 International Conference on Unmanned Aircraft Systems (ICUAS)", "year": 2013, "author_names": [ "Orhan Eroglu", "Guray Yilmaz" ], "n_citations": 12, "n_key_citations": 0, "score": 1 }, { "doc_id": "15270030", "title": "TRN history, trends and the unused potential", "abstract": "The term Terrain Referenced Navigation is used to describe a larger family of systems that estimate position by measuring terrain heights and comparing them with a digital elevation map. This is not a new navigation technique. In fact, TRN has been around for some time, with its history dating back to the 1950s. At that time the technological possibilities were rather limited, so forerunner terrain sensing systems were completely analog and/or would require the need of the human factor. With the \"digital age\" TRN methods started to become practical. The 70s and 80s were the decades which account for most of the development in this field. Different processing techniques settled into shape and TRN found practical application especially within military technology. Later on, the interest in terrain sensing methods started to diminish. Nowadays impressive technology exists. For example: laser sensors can measure terrain elevation with a signal having a milli radian beamwidth; digital maps of 1m resolution are available. These are not the only enablers that warrant a re investigation of the current potential of TRN. Among other factors we remind the current capabilities in: digital signal processing, real time computing power and data storage. Many of the previous limitations of TRN are no longer applicable and therefore this technique may once again be considered a strong candidate for accurate navigation solutions. This paper provides a look into TRN history and illustrates how a set of important developments in the past provide the basis for the (yet unused) potential of TRN for performance based navigation.", "corpus_id": 15270030, "venue": "2012 IEEE/AIAA 31st Digital Avionics Systems Conference (DASC)", "year": 2012, "author_names": [ "Dhadesugoor R Vaman" ], "n_citations": 22, "n_key_citations": 1, "score": 1 } ]

[ { "doc_id": "218900856", "title": "From Tether to Libra: Stablecoins, Digital Currency and the Future of Money", "abstract": "This paper provides an overview on stablecoins and introduces a novel terminology to help better identify stablecoins with truly disruptive potential. It provides a compact definition for stablecoins, identifying the unique features that make them distinct from previously known payment systems. Furthermore, it surveys the different use cases for stablecoins as well as the underlying economic incentives for creating them. Finally, it outlines critical regulatory considerations that constrain stablecoins and summarizes key factors that are driving their rapid development.", "corpus_id": 218900856, "venue": "ArXiv", "year": 2020, "author_names": [ "Alexander Lipton", "Aetienne Sardon", "Fabian Schar", "Christian Schupbach" ], "n_citations": 9, "n_key_citations": 1, "score": 1 }, { "doc_id": "199290892", "title": "Libra, une guerre des cryptomonnaies de plus ou une future devise internationale de facto", "abstract": "Le 2 mai 2019 a Geneve, Facebook participait a l'etablissement de Libra Networks, une association ayant pour objet de proposer un systeme de paiement global et des services financiers fondes sur la technologie blockchain capable de securiser les transactions en tracant les echanges. A l'annonce du lancement du libra la nouvelle devise de Facebook, prevu pour 2020 dans une douzaine de pays, les crypto monnaies actuelles ont soudain devisse fin juin, le bitcoin passait de 11 000 dollars.", "corpus_id": 199290892, "venue": "Terminal", "year": 2019, "author_names": [ "Dominique Desbois" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "203185233", "title": "Libra, another cryptocurrency war or a future de facto international currency?", "abstract": "On May 2, 2019 in Geneva, Facebook was involved in the establishment of Libra Networks, an \"association\" whose purpose is to offer a global payment system and financial services based on blockchain technology able to secure transactions by tracing exchanges. At the announcement of the launch of libra, Facebook's new currency, planned for 2020 in a dozen countries, the current crypto currencies have suddenly unscrewed. Can the banking market extend to new customers? Libra, poor man's currency or money laundering vector?", "corpus_id": 203185233, "venue": "", "year": 2019, "author_names": [ "Dominique Desbois" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "150203929", "title": "Libra Subsea Achievements and Future Challenges", "abstract": "The paper uses a case study approach to present the challenges to develop a large and thick oil carbonate reservoir, full of opportunities but also of uncertainties. Additionally, Libra block development is under a Production Sharing Contract that was awarded to a Consortium where Petrobras is the operator in partnership with Shell, Total, CNOOC Limited and CNPC. This paper will present the main subsea technological achievements made during the execution of the Libra Extended Well Test (EWT) Project so far and also future technologies that will contribute to overcome the full field development challenges.", "corpus_id": 150203929, "venue": "Day 1 Mon, May 06, 2019", "year": 2019, "author_names": [ "Ricardo Toneto de Melo", "Tadeu Milao dos Santos", "Claudio J G M Valenca", "Leonidio Buk Jr", "Rafael Merenda Pereira", "Fabio Menezes Passarelli", "Fabio Rocha Hoelz" ], "n_citations": 3, "n_key_citations": 0, "score": 1 }, { "doc_id": "226268488", "title": "Comparative Analysis of Bitcoin, Ethereum, and Libra", "abstract": "In recent years, with the popularity of Bitcoin and other cryptocurrencies, the blockchain technology behind it has gradually become a research focus. After the official launch of Facebook's cryptocurrency project Libra and the publication of the Libra white paper, Libra triggered extensive discussions around the world. Libra has aroused the public's awareness of open finance and is deeply impacting the traditional financial system. In this paper, we systematically review and discuss the blockchain technology and summarize Libra's innovations in consensus algorithm, performance, and application scenario through a comparative analysis of Libra, Bitcoin, and Ethereum. Finally, we put forward the challenges that Libra will face in the future.", "corpus_id": 226268488, "venue": "2020 IEEE 11th International Conference on Software Engineering and Service Science (ICSESS)", "year": 2020, "author_names": [ "Wenzheng Li", "Mingsheng He" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "218928449", "title": "Potential negative implications of Libra cryptocurrency", "abstract": "Cryptocurrencies have been in the center of interest of both scientific and professional public for over ten years. Due to the volatile exchange rate against convertible currencies, investors predominantly use cryptocurrencies as an instrument of speculative investment, while their use in the payments is at a negligible level. On June 18, 2019, the Internet giant Facebook announced the creation of a consortium of financial and technology companies aimed at establishing a global cryptocurrency with stable value called Libra. It is planned to create an open blockchain through a new programming language, which will serve development teams in the future for creation of smart contracts. The subject of research in the paper will be the potential operational performances of Libra concept. The basis for the research will be a white paper published by Facebook and knowledge about the functioning of other cryptocurrencies, notably Bitcoin. The aim of the paper is to highlight the expected economic and security implications of Libra concept.", "corpus_id": 218928449, "venue": "", "year": 2020, "author_names": [ "Nenad Zoran Tomic", "Violeta Todorovic" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "225811440", "title": "Cutting the network? Facebook's Libra currency as a problem of organisation", "abstract": "This essay explores the organisational character of Facebook's Libra currency by undertaking a critical reading of documents published by the Libra Association. Drawing on the conceptual work of Marilyn Strathern and Michel Serres, it illustrates how ownership cuts the network and encourages parasitism as a means of driving future profit. Central to this is the claim that Libra is not an exercise in democratising money, but rather, the opposite: Libra is run as a club, for the benefit of club members. The conceptual theme of 'cutting' is used to organise the argument. Rather than a cutting edge technology, Libra's true innovation is organisational and consists in overturning the decentralised character of blockchain, such that distributed ledger technology is re centralised by big tech firms. Outsiders are thus cut off from Libra; only those inside the club have the right to participate in Libra and its governance. This position also affords members an exclusive capacity to take a cut of the profits generated through Libra. As a private organisation, members have sole rights to future profits generated from the Libra ecosystem and are in this way incentivised to create new product opportunities over time.", "corpus_id": 225811440, "venue": "", "year": 2020, "author_names": [ "Daniel Tischer" ], "n_citations": 1, "n_key_citations": 0, "score": 0 }, { "doc_id": "229078833", "title": "Facebook's Libra: The Next Tax Challenge for the Digital Economy", "abstract": "In 2019 Facebook announced its plan to launch a cryptocurrency within the coming year, with the express goal of extending past its existing user base to those who lack access to traditional banking services. The prospect of Facebook enabling millions of global transactions outside of the (highly regulated) conventional banking system prompted scrutiny, most immediately in the area of financial services regulation. But it should also heighten the sense of urgency to reconstruct prevailing global tax rules to ensure that highly digitalized businesses pay an appropriate amount of taxes wherever they carry out business activities and create value. This paper lays out Facebook Libra's original design concept, the problems it sought to solve, and the potential implications its successful launch would have on the redesign of the global tax system that is already in progress. The paper concludes that the current global economic turmoil makes for an uncertain future, but one that will clearly require a coherent strategy for taxing high tech firms and innovations with global scope, with Libra a prominent case.", "corpus_id": 229078833, "venue": "", "year": 2020, "author_names": [ "Allison Christians", "Mahwish Tazeem" ], "n_citations": 0, "n_key_citations": 0, "score": 1 }, { "doc_id": "220884857", "title": "Toward Emancipatory Currencies: A Critique of Facebook's Libra Cryptocurrency and Ideas for Alternatives", "abstract": "Money underpins everyone's daily life. Possible solutions for the global problems fail if there is not enough money. Yet changes to our monetary system are rarely included in the discussion. Against this backdrop, cryptocurrencies create important new precedents regarding how money can be created. Libra is a recent cryptocurrency project launched by one of the dominant social media companies, which has been the subject of intense international discussion. Because the details of Libra are not yet fully specified, we present different scenarios of how a successful Libra currency might play out and some of the problems that might follow. These scenarios include the monetization of the payment infrastructure, (ab)use of sanctioning power, a reduction of the reserve ratio, and an abandonment of reconvertability. These problems suggest a number regulatory strategies in response. Finally, we describe values and design requirements that might help guide future cryptocurrency innovation and provide ways of evaluating their success or failure.", "corpus_id": 220884857, "venue": "ICT4S", "year": 2020, "author_names": [ "Marvin Auf der Landwehr", "Volker Wulf" ], "n_citations": 0, "n_key_citations": 0, "score": 0 }, { "doc_id": "227499347", "title": "Quantifying dementia prevention potential in the FINGER randomized controlled trial using the LIBRA prevention index", "abstract": "Individuals in early dementia prevention trials may differ in how much they benefit from the interventions depending on their initial level of dementia risk. Using a composite risk score comprising health and lifestyle factors (i.e. modifiable dementia risk) might be useful to better target future interventions and to monitor intervention effects during study execution. The present study examines whether the effects of a multi domain lifestyle intervention on cognition differ across baseline modifiable dementia risk, and to investigate the potential use of a modifiable dementia risk score as an outcome measure in intervention studies.", "corpus_id": 227499347, "venue": "", "year": 2020, "author_names": [ "Kay Deckers", "Sebastian Koehler", "Tiia Ngandu", "Frans R J Verhey", "Miia Kivipelto", "Alina Solomon" ], "n_citations": 0, "n_key_citations": 0, "score": 0 } ]

[ { "doc_id": "33616894", "title": "Determining requirements for patient centred care: a participatory concept mapping study", "abstract": "BackgroundRecognition of a need for patient centred care is not new, however making patient centred care a reality remains a challenge to organisations. We need empirical studies to extend current understandings, create new representations of the complexity of patient centred care, and guide collective action toward patient centred health care. To achieve these ends, the research aim was to empirically determine what organisational actions are required for patient centred care to be achieved.MethodsWe used an established participatory concept mapping methodology. Cross sector stakeholders contributed to the development of statements for patient centred care requirements, sorting statements into groupings according to similarity, and rating each statement according to importance, feasibility, and achievement. The resultant data were analysed to produce a visual concept map representing participants' conceptualisation of patient centred care requirements. Analysis included the development of a similarity matrix, multidimensional scaling, hierarchical cluster analysis, selection of the number of clusters and their labels, identifying overarching domains and quantitative representation of rating data.ResultsThe outcome was the development of a conceptual map for the Requirements of Patient Centred Care Systems (ROPCCS) ROPCCS incorporates 123 statements sorted into 13 clusters. Cluster labels were: shared responsibility for personalised health literacy; patient provider dynamic for care partnership; collaboration; shared power and responsibility; resources for coordination of care; recognition of humanity skills and attributes; knowing and valuing the patient; relationship building; system review evaluation and new models; commitment to supportive structures and processes; elements to facilitate change; professional identity and capability development; and explicit education and learning. The clusters were grouped into three overarching domains, representing a cross sectoral approach: humanity and partnership; career spanning education and training; and health systems, policy and management. Rating of statements allowed the generation of go zone maps for further interrogation of the relative importance, feasibility, and achievement of each patient centred care requirement and cluster.ConclusionThe study has empirically determined requirements for patient centred care through the development of ROPCCS. The unique map emphasises collaborative responsibility of stakeholders to ensure that patient centred care is comprehensively progressed. ROPCCS allows the complex requirements for patient centred care to be understood, implemented, evaluated, measured, and shown to be occurring.", "corpus_id": 33616894, "venue": "BMC Health Services Research", "year": 2017, "author_names": [ "Kathryn Ogden", "Jenny Barr", "David Greenfield" ], "n_citations": 39, "n_key_citations": 2, "score": 0 }, { "doc_id": "36586706", "title": "Comparing patients' perspectives of \"good care\" in Dutch outpatient psychiatric services with academic perspectives of patient centred care", "abstract": "Abstract Background: Over the past six decades, the concept of patient centred care (PCC) has been discussed in health research, policy and practice. However, research on PCC from a patients' perspective is sparse and particularly absent in outpatient psychiatric services. Aim: to gain insight into what patients with bipolar disorder and ADHD consider \"good care\" and what this implies for the conceptualisation of PCC. Method: A literature review on the different conceptualisations of PCC was complemented with qualitative explorative research on the experiences and needs of adults with ADHD and with bipolar disorder with mental healthcare in the Netherlands using focus group discussions and interviews. Results: The elements addressed in literature are clustered into four dimensions: \"patient\" \"health professional\" \"patient professional interaction\" and \"healthcare organisation\" What is considered \"good care\" by patients coincided with the four dimensions of PCC found in literature and provided refinement of, and preferred emphasis within, the dimensions of PCC. Conclusions: This study shows the value of including patients' perspectives in the conceptualisation of PCC, adding elements, such as \"professionals listen without judgment\" \"professionals (re)act on the fluctuating course of the disorder and changing needs of patients\" and \"patients are seen as persons with positive sides and strengths\"", "corpus_id": 36586706, "venue": "Journal of mental health", "year": 2017, "author_names": [ "Eva F Maassen", "Samuel J C Schrevel", "Christine Dedding", "Jacqueline E W Broerse", "Barbara J Regeer" ], "n_citations": 23, "n_key_citations": 0, "score": 0 }, { "doc_id": "25826734", "title": "Patient Centred Care in Canada: Key Components and the Path Forward.", "abstract": "Canadians' health and its care continue to evolve. Chronic diseases affect more than 50% of our aging population, but the majority of public and professional stakeholders retain a sense of care quality. An emergent issue, however, is generating an increasingly wide debate. It is the concept of patient centred care, including its definition of key components, and efficacy. To advance the evidence base, the 2013 2014 and 2016 Health Care in Canada (HCIC) surveys measured pan stakeholder levels of support and implementation priorities for frequently proposed components of patient centricity in healthcare. The public's highest rated component was timely access to care, followed by perceived respect and caring in its delivery, with decisions made in partnership among patients and professional providers, and within a basic belief that care should be based on patients' needs versus their ability to pay. Health professionals' levels of support for key components largely overlapped the public's levels of support for key components, with an additional accent on care influenced by an evidence base and expert opinion. In terms of priority to actually implement enhanced patient centred care options, timely access was universally dominant among all stakeholders. Caring, respectful care, also retained high implementation priority among both the public and professionals, as did care decisions made in partnership, and, among professionals, care driven by research and expert opinion. Low priorities, for both the public and professionals, were the actual measurements of patient centred care delivery and its impact on outcomes. In summary, there is remarkable concordance among all stakeholders in terms of favoured interventions to enhance patient centred care, namely, timely access, caring, partnering and communicative delivery of evidence based care. Unfortunately, the lack of contemporary imperative around the value of measuring and reporting actual use and outcomes of favoured interventions means uncertainty of their efficacy will persist for the foreseeable future. Things can be better.", "corpus_id": 25826734, "venue": "Healthcare quarterly", "year": 2017, "author_names": [ "T Montague", "Amede Gogovor", "John Aylen", "Lisa Ashley", "Sara Ahmed", "Lesli Martin", "Bonnie Cochrane", "Owen Adams", "Joanna Nemis-White" ], "n_citations": 23, "n_key_citations": 1, "score": 1 }, { "doc_id": "79389657", "title": "Patient perceptions of patient centred care, empathy and empowerment in complementary medicine clinical practice: A cross sectional study", "abstract": "Abstract Objective Patient centred care (PCC) is increasingly recognised as a valuable paradigm of clinical care, particularly in the field of chronic disease. As the use of complementary medicine (CM) grows, so does the need to explore the clinical experience of CM patients. This study aims to provide an examination of patient perceptions of the degree to which CM practitioners employ a patient centred approach during consultation. Design Cross sectional survey preliminary study. Methods A patient reported survey was administered to assess perceptions of practitioner empathy and support, patient empowerment, and PCC in a multi profession CM student clinic offering acupuncture, homeopathy, naturopathy, nutrition and myotherapy. The survey was comprised of four existing measures: the Consultation and Relational Empathy (CARE) measure, Patient Centred Care scale, Perceived Provider Support scale and Empowerment scale. Results Amongst 252 respondents, positive perceptions towards all five professions were consistently reported by participants for all four measures. A higher proportion of positive experiences of practitioner empathy and PCC were reported by participants consulting with a naturopath, nutritionist or homeopath compared to those consulting with a myotherapist or acupuncturist. Participants who visited the clinic for assistance with a chronic health condition reported more positive perceptions for items regarding communication from the Patient Centred Care scale p 0.02 and self efficacy from the CARE measure p 0.04 Conclusion CM clinical care appears to be characterised by a patient centred, empathic and empowering approach. CM may present a valuable resource of PCC, particularly within the field of chronic disease management. Further research is required in order to explore this approach in the wider CM community.", "corpus_id": 79389657, "venue": "", "year": 2017, "author_names": [ "Hope Foley", "Amie Steel" ], "n_citations": 20, "n_key_citations": 0, "score": 0 }, { "doc_id": "43838329", "title": "Benefits of Population Segmentation Analysis for Developing Health Policy to Promote Patient Centred Care.", "abstract": "1Programme in Health Services and Systems Research, Duke NUS Medical School, Singapore Address for Correspondence: Mr Chong Jia Loon, Programme in Health Services and Systems Research, Duke NUS Medical School, 8 College Road, Singapore 169857. Email: jialoon@u.duke.nus.edu Introduction The philosophy of patient centred care requires a paradigm shift away from fragmented institution centred care to integrated care models such as care teams that develop and implement a care plan tailored to meet patient needs.1 While no 2 patients are exactly alike, it is not feasible to focus at the granular level when developing health policies that promote patient centred care. Segmenting the population into relatively homogeneous, distinct subgroups promotes the development of care models tailored to similar groups of people rather than individuals.2,3 Population segmentation, with the aim of optimising healthcare services, originally evolved from market segmentation. Widely applied in the field of business, market segmentation involves tailoring product features for different consumer types.4 Population segmentation analysis can happen at various levels at the macro (e.g. nationwide population) meso (e.g. diabetic patients) and micro levels (e.g. individual adverse event risk stratification)3 with the segments themselves being derived either through expert inputs or post hoc using statistical methods applied to empirical data.4 In order to prepare for an ageing population in Singapore,1 initiatives to integrate care through population segmentation have already been started, such as those by the Agency for Integrated Care.5 As resources are finite, targeted and high value interventions that are enabled by population segmentation analysis have become increasingly relevant. In this article, we discuss the specific benefits of population segmentation analysis for the provision of efficient patientcentred care. These include the facilitation of healthcare service planning, promoting the evaluation of health service innovations and improving care integration.", "corpus_id": 43838329, "venue": "Annals of the Academy of Medicine, Singapore", "year": 2017, "author_names": [ "Jia Loon Chong", "David Bruce Matchar" ], "n_citations": 16, "n_key_citations": 1, "score": 1 }, { "doc_id": "28206282", "title": "Patient centred care: a call to action for wound management.", "abstract": "J O U R N A L O F W O U N D C A R E V O L 2 6 N O 1 1 N O V E M B E R 2 0 1 7 6 6 2 Foreword by Marco Romenelli, MD PhD, WUWHS President, Professor of Dermatology, Department of Clinical and Experimental Medicine. University of Pisa, Italy. JWC WUWHS editorial advisory board editor in chief: The World Union of Wound Healing Societies (WUWHS) is proud to partner with the Lindsay Leg Club Foundation and endorse this document on patient centred care. The topics covered in the document have been produced by experts in this field who have participated in the Lindsay Leg Club symposium on patient advocacy held in Florence during the WUWHS conference in September 2016. The content covers several aspects that we face every day during our clinical practice. Patients asking for our expertise not only in managing chronic wounds, but also to have optimal interaction and collaboration with the wound care team treating their condition. The key point is always to put the patient at the centre of wound management. This goal is described here, from different points of view with a focus on the holistic approach to care that considers the patient's needs as a whole rather than treating wound problems in isolation. My role as a WUWHS President will be to make sure that the document receives worldwide distribution in different settings, from scientific societies to political organisations, with the aim of raising awareness on patient advocacy, and to obtain enough credit and understanding to be able to negotiate better quality health care services, together with the highest standards. With my wound care team, at the University of Pisa, have been working, in the last few years, under the umbrella of the European Commission on a research project regarding telemonitoring of patients by means of biomedical sensors. We think that this is a fascinating area of wound care practice in relation to patient centred care, where there is space to improve service to patients in isolated geographical areas not able to reach specialist hospitals. I am sure we will be able, in the not too distant future, to cover the care needs of these patients. I wish this group great success in the years to come and consider this a brilliant initial initiative for us to demonstrate the desire to act on patient advocacy supported by a strong communication strategy across wound care worldwide. Introduction by Ellie Lindsay OBE, Life President of the Lindsay Leg Club Foundation and Chair of the WUWHS International Panel on Patient Advocacy Quite recently, in a surgical ward in the UK, my husband, who was very unwell at the time, said to me, 'will you please be my patient advocate? I was shocked to be asked this and wanted to know why. 'Nobody is listening to me, he said 'I have lain on a bedframe for three nights as the mattress was not working, while the nurses kept saying that the bed mattress was working, but they are wrong. Soon afterwards my husband ended up with a category II pressure ulcer (PU) on top of the serious illness that he was being treated for. One of the core objects of the charity I represent, the Lindsay Leg Club Foundation, is public education on leg health. Wound management is a major demand on health care resources which will continue to escalate with the increasing age and comorbidity profile of the patients that we care for. Prevention needs to be our priority, along with care of existing wounds, but patients also have rights and expectations that need to be taken into account. For example, they should not have to accept developing category II PU as a result of not being listened to, making them reluctant to return to hospital to continue their vital treatment. Many of us have already been advocates for people we are close to. In doing this we may have had to challenge the system that is meant to help and care for us. We are also highly likely to be bedridden ourselves at some point, and we will want those who are close to us to advocate for us too. How confident are we that the structures and policies for patient advocacy and empowerment will exist when this time comes? The aim of this document is to explore the concept and status of patient advocacy with regard to wound care. But it is also more than that. The Task Force panel that put this document together was instigated at the request of the WUWHS, whose objective is to promote a patient centred approach to wound care at an international level. The panel consists of experts, both within and outside wound care, who have devoted a considerable part of their careers to trying to understand, chart and promote the patient experience. We hope that this document will begin a structured process of patient empowerment within wound care that will change policy at the highest level. Patient centred care: a call to action for wound management", "corpus_id": 28206282, "venue": "Journal of wound care", "year": 2017, "author_names": [ "Ellie Lindsay", "Roland Renyi", "Patricia Wilkie", "Fiorella Monge-del Valle", "Wendy White", "Vincent Maida", "Helen E Edwards", "David Foster" ], "n_citations": 14, "n_key_citations": 1, "score": 0 }, { "doc_id": "38189928", "title": "The importance of patient centred care to overcome barriers in the management of actinic keratosis", "abstract": "Visible actinic keratosis (AK) lesions and subclinical (non visible) sun damage in the field of cancerization are associated with risk of both non melanoma skin cancer, including basal cell carcinoma (BCC) and squamous cell carcinoma (SCC) and, more rarely, melanoma. As the incidences of AK and skin cancer are increasing, effective prevention and treatment of AK is essential to minimize disease burden and improve patient quality of life. Currently, AK lesions are often left untreated and field therapies are underused. Patient centred care, with a focus on the patient physician relationship, has proven cost effective, and improved clinical outcomes and patient satisfaction in a number of therapy areas. Strategies for applying patient centred care to AK are warranted. Existing barriers to the effective treatment of AK were identified and patient centric strategies to overcome each barrier were discussed. Barriers to effective AK treatment include poor disease awareness (for both patient and physician) concerns associated with the cosmetic effects of treatment, treatment related side effects, cost perceptions for lesion directed vs field directed therapies, and inadequate adherence, particularly with long treatment duration. Overcoming these barriers will involve patient and physician education that promotes: disease prevention and awareness; the importance of self examination; an understanding of treatment options; and the importance of adherence to treatment. To maximize its effectiveness, education should be delivered within a patient centric framework, where the relationship between patient and physician is built on effective communication, empathy and a feeling of partnership. Patient centric care, including patient education, is key to overcoming the barriers associated with effective AK treatment.", "corpus_id": 38189928, "venue": "Journal of the European Academy of Dermatology and Venereology JEADV", "year": 2017, "author_names": [ "Rino Cerio" ], "n_citations": 12, "n_key_citations": 0, "score": 0 }, { "doc_id": "40046365", "title": "A cross sectional study investigating patient centred care, co creation of care, well being and job satisfaction among nurses", "abstract": "BACKGROUND Developments in the community health nursing sector have resulted in many changes in the activities of these nurses. The concepts of patient centred care and co creation of care are gaining importance in the work of community health nurses. Whether patient centred care also contributes positively to nurses' well being and job satisfaction is not known. METHOD In 2015, a cross sectional survey was conducted among 153 community health nurses employed by 11 health care organisations in the southern part of the Netherlands. Correlation and regression analyses were performed to identify relationships among patient centred care, co creation of care, background characteristics, job satisfaction and well being of community health nurses. RESULTS Patient centred care and co creation of care were correlated positively with community health nurses' well being and job satisfaction. Both variables were predictors of well being, and patient centred care was a predictor of job satisfaction. The length of time in the present position was related negatively to community health nurses' job satisfaction and well being. CONCLUSIONS Investment in patient centred care and co creation of care is important for the well being and job satisfaction of community health nurses. IMPLICATIONS FOR NURSING MANAGEMENT To safeguard or improve job satisfaction and well being of community health nurses, organisations should pay attention to the co creation of care and patient centred care.", "corpus_id": 40046365, "venue": "Journal of nursing management", "year": 2017, "author_names": [ "Judith den Boer", "Anna Petra Nieboer", "Jane M Cramm" ], "n_citations": 16, "n_key_citations": 0, "score": 1 }, { "doc_id": "35226243", "title": "The Graduating European Dentist Domain III: Patient Centred Care.", "abstract": "This position paper outlines the areas of competence and learning outcomes of \"The Graduating European Dentist\" that specifically relate to patient centred care. This approach is becoming increasingly prominent within the literature and within policy documents. Whilst working to an evidence base is critical, dentists must also be aware of the scientific basis that underpins the treatment they provide. The evaluation process, which supports treatment planning, also requires dentists to be able to listen, collate, and record pertinent information effectively. In addition, the ability to account for a patient's social, cultural and linguistic needs (cultural competence) will result in a practitioner who is able to treatment plan for patient centred care.", "corpus_id": 35226243, "venue": "European journal of dental education official journal of the Association for Dental Education in Europe", "year": 2017, "author_names": [ "James Clark Field", "Argyro Kavadella", "Sandor Al Szep", "Julia R Davies", "Elis Delap", "M C Manzanares Cespedes" ], "n_citations": 12, "n_key_citations": 0, "score": 0 }, { "doc_id": "619963", "title": "Interprofessional collaborative patient centred care: a critical exploration of two related discourses", "abstract": "Abstract There has been sustained international interest from health care policy makers, practitioners, and researchers in developing interprofessional approaches to delivering patient centred care. In this paper, we offer a critical exploration of a selection of professional discourses related to these practice paradigms, including interprofessional collaboration, patient centred care, and the combination of the two. We argue that for some groups of patients, inequalities between different health and social care professions and between professionals and patients challenge the successful realization of the positive aims associated with these discourses. Specifically, we argue that interprofessional and professional patient hierarchies raise a number of key questions about the nature of professions, their relationships with one another as well as their relationship with patients. We explore how the focus on interprofessional collaboration and patient centred care have the potential to reinforce a patient compliance model by shifting responsibility to patients to do the \"right thing\" and by extending the reach of medical power across other groups of professionals. Our goal is to stimulate debate that leads to enhanced practice opportunities for health professionals and improved care for patients.", "corpus_id": 619963, "venue": "Journal of interprofessional care", "year": 2015, "author_names": [ "Ann L Fox", "Scott Reeves" ], "n_citations": 110, "n_key_citations": 8, "score": 0 } ]

[ { "doc_id": "34800513", "title": "Chemical composition and cardiovascular effects induced by the essential oil of Cymbopogon citratus DC. Stapf, Poaceae, in rats", "abstract": "Cymbopogon citratus DC. Stapf, Poaceae, is used in the folk medicine for hypertension treatment. This work investigated the chemical composition and cardiovascular effects in rats of C. citratus essential oil (EOCC) A phytochemical screening demonstrated the presence of eight constituents, being geranial the major compound (43.08% In rats, EOCC (1, 5, 10, and 20 mg/kg, i.v. induced transient hypotension and bradycardia that were attenuated by atropine and sodium thiopental, but not by L NAME or indomethacin. In rings of rat superior mesenteric artery pre contracted with phenylephrine, EOCC (1 to 3000 ug/mL) induced relaxation that was not affected after removal of the endothelium, after TEA or in rings pre contracted with KCl (80 mM) Furthermore, EOCC (1000 ug/mL) was not able to induce additional effect on maximal relaxation of nifedipine (10 uM) In conclusions, EOCC induces hypotension, possibly by reduction in vascular resistance caused by inhibition of the Ca2+ influx, and bradycardia probably due to an activation of cardiac muscarinic receptors.", "corpus_id": 34800513, "venue": "", "year": 2010, "author_names": [ "Flavia Viana Moreira", "Joana Ferreira Alves Bastos", "Arie Fitzgerald Blank", "Pericles B Alves", "Marcio Roberto Viana Dos Santos" ], "n_citations": 32, "n_key_citations": 3, "score": 0 }, { "doc_id": "86012999", "title": "Inference of phylogenetic relationships among the subfamilies of grasses (Poaceae: Poales) using meso scale exemplar based sampling of the plastid genome.", "abstract": "To clarify phylogenetic relationships among grass (Poaceae) subfamilies and to better resolve the placement of Poaceae in Poales, we surveyed 17 plastid genes and associated noncoding regions ~15.5 kb per taxon, about 1/10 of the plastid genome) for exemplar representatives from 10 grass subfamilies and a broad sample of related monocots. We found general concordance in relationships and support levels among gene regions and data partitions across analyses, with some exceptions in Bayesian analyses. Different phylogenetic criteria generally agreed on backbone relationships, and the support values we inferred were generally as good as or better than those in other studies that employed more taxa for fewer genes to estimate the same backbone. Within grasses, we found robust support for the monophyly of subfamily Anomochlooideae and for the Bambusoideae Ehrhartoideae Pooideae (BEP) clade, and moderate support for a sister group relationship between Bambusoideae and Pooideae. Most relationships in the strong.", "corpus_id": 86012999, "venue": "", "year": 2010, "author_names": [ "Jeffery M Saarela", "Sean W Graham" ], "n_citations": 29, "n_key_citations": 1, "score": 0 }, { "doc_id": "129370647", "title": "Poaceae phytoliths from the Niassa Rift, Mozambique", "abstract": "Abstract The most common grass phytoliths from \"Zambezian\" miombos are described here for the first time. Their potential for long term preservation in sediments makes them a useful tool in the reconstruction of ancient plant communities and plant/human interactions. We processed 60 plant samples (26 identified genera and species) with an average of 300 phytoliths counted per sample to a total of 18,586. Forty seven morphotypes were described as per the International Code for Phytolith Nomenclature, with exceptions, including forty five discreet shapes and two articulated forms, which can be used as comparative reference materials. We conducted three forms of statistical analyses: Discriminant Analysis, Cluster Analysis, and Principal Component Analysis. The highest biomineral content was recorded among the Bambuseae and Paniceae, while the lowest silica production is detected in the Cynodonteae tribe. Typologically, the subfamily Panicoideae yielded 50% of the types reported here, 32% are from the Chloridoideae, 12% from the Bambusoideae, and 8% from the Arundinoideae sensu lato. Overall, the idealized Zambezian Poaceae phytolith spectrum is dominated by a small subset of Poaceae short cells, which include five morphotypes conventionally associated with Panicoid grasses (Bilobate concave outer margin long shaft, Bilobate concave outer margin short shaft, Bilobate convex outer margin long shaft, Bilobate convex outer margin short shaft, Cross) one morphotype commonly seen in Chloridoid taxa (saddle) and two types that appear across subfamily boundaries (tower, tower horned) The next logical step to take in regional phytolith research is the account of phytoliths deposited in soils underneath living plants, for they represent the interface between existing vegetation communities and the inevitably distorted fossil assemblages that the paleobotanist uses for environmental reconstruction.", "corpus_id": 129370647, "venue": "", "year": 2010, "author_names": [ "Julio Mercader", "Fernando Javier Astudillo", "Mary E Barkworth", "Tim J Bennett", "Chris Esselmont", "Rahab Kinyanjui", "Dyan Laskin Grossman", "Steven Simpson", "Dale Walde" ], "n_citations": 78, "n_key_citations": 8, "score": 0 }, { "doc_id": "11781342", "title": "Population demography influences climatic niche evolution: evidence from diploid American Hordeum species (Poaceae)", "abstract": "In this study, we explore the interplay of population demography with the evolution of ecological niches during or after speciation in Hordeum. While large populations maintain a high level of standing genetic diversity, gene flow and recombination buffers against fast alterations in ecological adaptation. Small populations harbour lower allele diversity but can more easily shift to new niches if they initially survive under changed conditions. Thus, large populations should be more conservative regarding niche changes in comparison to small populations. We used environmental niche modelling together with phylogenetic, phylogeographic and population genetic analyses to infer the correlation of population demography with changes in ecological niche dimensions in 12 diploid Hordeum species from the New World, forming four monophyletic groups. Our analyses found both shifts and conservatism in distinct niche dimensions within and among clades. Speciation due to vicariance resulted in three species with no pronounced climate niche differences, while species originating due to long distance dispersals or otherwise encountering genetic bottlenecks mostly revealed climate niche shifts. Niche convergence among clades indicates a niche filling pattern during the last 2 million years in South American Hordeum. We provide evidence that species, which did not encounter population reductions mainly showed ecoclimatic niche conservatism, while major niche shifts occurred in species which have undergone population bottlenecks. Our data allow the conclusion that population demography influences adaptation and niche shifts or conservatism in South American Hordeum species.", "corpus_id": 11781342, "venue": "Molecular ecology", "year": 2010, "author_names": [ "Sabine S Jakob", "Christoph Heibl", "Dennis Rodder", "Frank R Blattner" ], "n_citations": 58, "n_key_citations": 4, "score": 0 }, { "doc_id": "10056", "title": "The complete chloroplast genome of tall fescue (Lolium arundinaceum; Poaceae) and comparison of whole plastomes from the family Poaceae.", "abstract": "In this paper, we describe the complete chloroplast genome of Lolium arundinaceum. This sequence is the culmination of a long term project completed by >400 undergraduates who took general genetics at Middle Tennessee State University from 2004 2007. It was undertaken in an attempt to introduce these students to an open ended experiential/exploratory lesson to produce and analyze novel data. The data they produced should provide the necessary information for both phylogenetic comparisons and plastome engineering of tall fescue. The fescue plastome (GenBank FJ466687) is 136048 bp with a typical quadripartite structure and a gene order similar to other grasses; 56% of the plastome is coding region comprised of 75 protein coding genes, 29 tRNAs, four rRNAs, and one hypothetical coding region (ycf) Comparisons of Poaceae plastomes reveal size differences between the PACC (subfamilies Panicoideae, Arundinoideae, Centothecoideae, and Chloridoideae) and BOP (subfamilies Bambusoideae, Oryzoideae, and Pooideae) clades. Alignment analysis suggests that several potentially conserved large deletions in previously identified intergenic length polymorphic regions are responsible for the majority of the size discrepancy. Phylogenetic analysis using whole plastome data suggests that fescue closely aligns with Lolium perenne. Some unique features as well as phylogenetic branch length calculations, however, suggest that a number of changes have occurred since these species diverged.", "corpus_id": 10056, "venue": "American journal of botany", "year": 2010, "author_names": [ "A Bruce Cahoon", "Richard M Sharpe", "Chansamone Mysayphonh", "E J Thompson", "Andrea D Ward", "Anhua Lin" ], "n_citations": 24, "n_key_citations": 2, "score": 0 }, { "doc_id": "86148012", "title": "A Revision of Deschampsia, Avenella, and Vahlodea (Poaceae, Poeae, Airinae) in South America1", "abstract": "Abstract A revision of the species of Deschampsia P. Beauv. Avenella (Bluff Fingerh. Drejer, and Vahlodea Fr. (Poaceae, Poeae, Airinae) present in South America is given. Fifteen species of Deschampsia and two monospecific genera segregated from Deschampsia Avenella and Vahlodea are found in the Andes of Argentina and Chile south of 30degS, typically in humid or damp sites and wetlands. Isolated populations of the cosmopolitan D. cespitosa (L. P. Beauv. are also found in Bolivia and highlands of southern Brazil. Keys to differentiate among the species of Deschampsia and the allied genera Avenella and Vahlodea are provided. A lectotype is designated for D. berteroana (Kunth) Trin.", "corpus_id": 86148012, "venue": "", "year": 2010, "author_names": [ "Jorge Oscar Chiapella", "Fernando Omar Zuloaga" ], "n_citations": 21, "n_key_citations": 5, "score": 1 }, { "doc_id": "33890585", "title": "Evidence of natural hybridization in Brachiaria humidicola (Rendle) Schweick. (Poaceae: Panicoideae: Paniceae)", "abstract": "Polyploidy and aneuploidy are conspicuous features of chromosomal evolution in the Poaceae; at least 80% of grass species are of polyploid origin (Stebbins 1985) The original basic chromosome number for the Poaceae is not known and has been the subject of much speculation. In the large tribe Paniceae, which includes the genus Brachiaria, the most common basic chromosome number is x 9 (De Wet 1986) The predominance of x 9 in Brachiaria genus had been reported in several studies (Basappa et al. 1987; Honfi et al. 1990; Bernini and Marin Morales 2001; Mendes Bonato et al. 2002, 2006; Utsunomiya et al. 2005) More recently, a new chromosome number, x 6, was determined for B. dictyoneura (Risso Pascotto et al. 2006) There is a large predominance of polyploid forms in the genus Brachiaria and tetraploids prevail. The origin of polyploidy, however, has never been pursued in this genus. Cytological evidence from analysis of meiotic behaviour, including chromosome pairing at diakinesis, led to the suggestion that autotetraploidy and segmental allopolyploidy could have contributed to evolution in some species (Mendes Bonato et al. 2002, 2006; Utsunomiya et al. 2005) On the other hand, in two pentaploid accessions of B. brizantha (2n 5x 45) there was clear evidence of allopolyploidy (Mendes et al. 2006) This paper reports the unusual cytological behaviour during meiosis in one accession of Brachiaria humidicola from the Embrapa Beef Cattle germplasm collection.", "corpus_id": 33890585, "venue": "Journal of Genetics", "year": 2010, "author_names": [ "Kellen Regina Boldrini", "Maria Suely Pagliarini", "Cacilda Borges do Valle" ], "n_citations": 16, "n_key_citations": 1, "score": 1 }, { "doc_id": "1534277", "title": "Allelopathic potential of Bothriochloa laguroides var. laguroides (DC. Herter (Poaceae: Andropogoneae)", "abstract": "Bothriochloa laguroides var. laguroides (DC. Herter, a native bluestem of America, has been shown to produce many biologically active compounds. The allelopathic potential of aqueous extracts from roots, stems and leaves was examined. Lettuce seeds (Lactuca sativa) and maize (Zea mays) the common allelopathy bioassay systems, as well as seeds from two native species, wintergreen paspalum (Paspalum guenoarum) and lovegrass (Eragrostis curvula) were germinated in the presence of aqueous extracts. Percent seed germination, root and shoot elongation were measured. After 4 and 7 days root, stem and leaf extracts caused inhibition of root and shoot elongation in all four species tested. Aqueous extracts were generally less inhibitory to seed germination. Aqueous extracts from different parts of B. laguroides var. laguroides show therefore allelopathic effects inhibiting, in particular, growth of competing plants.", "corpus_id": 1534277, "venue": "", "year": 2010, "author_names": [ "Lidia R Scrivanti" ], "n_citations": 33, "n_key_citations": 0, "score": 1 }, { "doc_id": "4798179", "title": "Phylogenetics of Stipeae (Poaceae: Pooideae) based on plastid and nuclear DNA sequences", "abstract": "The Stipeae tribe is a group of 400 600 grass species of worldwide distribution that are currently placed in 21 genera. The 'needlegrasses' are characterized by having single flowered spikelets and stout, terminally awned lemmas. We conducted a molecular phylogenetic study of the Stipeae (including all genera except Anemanthele) using a total of 94 species (nine species were used as outgroups) based on five plastid DNA regions (trnK 5'matK, matK, trnHGUG psbA, trnL5' trnF, and ndhF) and a single nuclear DNA region (ITS) Our parsimony analysis of DNA sequences supports: the monophyly of the Stipeae including Macrochloa as sister to all other Stipeae; the removal of Lorenzochloa erectifolia from Ortachne since it does not align with Ortachne but with some species of Anatherostipa; Ptilagrostis as occurring in two separate clades; and Oryzopsis asperifolia as a monotypic genus. Achnatherum and Piptatherum as currently circumscribed are polyphyletic and we provide good support to split the former into four groups and the latter into three groups. Achnatherum s.s. Aciachne, Amelichloa, Austrostipa, Hesperostipa, Jarava s.s. Ortachne, Pappostipa, Piptatherum s.s. Piptochaetium, Ptilagrostis s.s. Stipa s.s. and Trikeraia are all well supported as monophyletic genera. Stipa capensis and S. parviflora both of African distribution are apparently misplaced and are not closely related to other species of Stipa s.s. but are allied to achnatheroids. Based on molecular evolution of plastid sequences and lemma epidermal pattern we present a stepwise model for the 1120_kap_18_32_6k.indd 511 07/06/10 21.23 512 Romaschenko et al. evolution of the Stipeae with two initial deep bifurcations followed by two further bifurcations that are geographically consistent. The segregation of new groups or clades tentatively called: Eriocoma, Nasselloid, 'Neotrinia''Piptatheropsis' and Timouria, require further study. Keywords Classification, grasses, ITS, phylogeny, plastid DNA, taxonomy. The tribe Stipeae Dumort. consists of temperate, cool season (C3) grasses that are widespread, mostly tussock forming grasses, of predominantly open grasslands in temperate and warm temperate regions. They are characterized by having single flowered spikelets without rachilla extensions, terminallyawned lemmas where the awn is the result of fusion between the central and two lateral vascular traces, florets with three, rarely two, linear lodicules that are slightly indurate at maturity, usually with the lemma concealing the palea (if the palea is exposed when the floret is closed, then the palea is coriaceous) and small sized chromosomes with a base number x 10 12 (Tzvelev 1989) The tribe comprises approximately 400 to 600 species; the number depending on how finely the Asian taxa are divided. The Stipeae are placed in subfamily Pooideae (Grass Phylogeny Working Group (GPWG) 2001) Within Pooideae the Stipeae is an early diverging lineage that arose after the separation of the Brachyelytreae Ohwi, Lygeeae J. Presl, and Nardeae W.D.J. Koch (Davis and Soreng 2007; Soreng et al. 2007) from the remainder of tribes. There are 21 accepted genera of Stipeae (Soreng et al. 2003, 2008) Achnatherum P. Beauv. Aciachne Benth. Ampelodesmos Link, Amelichloa Arriaga and Barkworth, Anemanthele Veldkamp, Austrostipa S.W.L. Jacobs and J. Everett, Celtica F.M. Vazquez and Barkworth, Hesperostipa (M.K. Elias) Barkworth, Jarava Ruiz and Pav. Macrochloa Kunth, Nassella (Trin. Ortachne Nees ex Steud. Orthoraphium Nees, Oryzopsis Michx. Pappostipa (Speg. Romasch. P.M. Peterson and Soreng, Piptatherum P. Beauv. Piptochaetium J. Presl, Psammochloa Hitchc. Ptilagrostis Griseb. Stipa L. and Trikeraia Bor. The above 20 genera, minus Ampelodesmos (which when included in Stipeae is placed in subtribe Ampelodesminae Conert) represent 'core Stipeae' In addition, subtribe Duthieinae Pilg. ex Potztal is sometimes placed in or lumped into Aveneae Dumort. Stipeae, or Phaenospermateae Renvoize and Clayton, including in its broadest sense: Anisopogon R.Br. Danthoniastrum (Holub) Holub, Megelachne Steud. Metcalfia Conert, Podophorus Phil. Pseudodanthonia Bor and C.E. Hubb. Sinochasea Keng, Duthiea Hack. and Stephanachne Keng (Clayton and Renvoize 1986; Soreng et al. 2003, 2008; Wu and Phillips 2006) Two monotypic genera, Timouria Roshev. and Lorenzochloa Reeder and C. Reeder, are currently attributed to Achnatherum and Ortachne, respectively (Clayton and Renvoize 1986; Wu and Phillips 2006) Generic boundaries among the genera in the Stipeae are problematic, especially among those named in the 18th and 19th centuries. Delimitation among these led many 20th century agros1120_kap_18_32_6k.indd 512 07/06/10 21.23 Phylogenetics of Stipeae 513 tologists to adopt a broad concept of the genus Stipa to encompass all of the currently accepted genera except Oryzopsis, Aciachne, and Piptochaetium in the New World (Spegazzini 1901; Hitchcock 1935, 1951) and Piptatherum in the Old World (Freitag 1975, 1985) New studies were performed to describe new genera, emend generic limits, or present novel relationships (Parodi 1947, 1960; Rojas 1997; Barkworth 1983, 1990, 1993; Jacobs and Everett 1996; Penailillo 1996, 2002, 2003; 2005; Torres 1997; Barkworth and Torres 2001; Cialdella and Giussani 2002; Vazquez and Barkworth 2004; Arriaga and Barkworth 2006; Cialdella et al. 2007; Romaschenko et al. 2008) Phylogenetic inferences for Stipeae are scarce. Based on the morphological features the most comprehensive review was made by Tzvelev (1977) where phylogenetic weight was assigned to such characters as shape of the lemma and callus, and development of awn indumentum. Tzvelev (1977) reported 16 genera of Stipeae including such genera as Eriocoma Nutt. (currently attributed to Achnatherum) Parodiella Reeder and C. Reeder (Lorenzochloa which is commonly placed in Ortachne) Stephanachne (as S. nigrescens Keng) Pappagrostis Roshev. [as Stephanachne pappophorea (Hack. Keng] and Streptachne R.Br. =Aristida) Tzvelev's suggested there were two major lineages: 1) Stipa s. s. (with long lanceolate lemmas, awns having strongly developed indumentum, and sharp calluses) and; 2) Piptatherum (characterized by short lemmas, short, hairless, caducous awns and blunt calluses) The Piptatherum lineage was thought to have originated from more primitive Achnatherum like species, whereas Ptilagrostis and A. chinense (Hitchc. Tzvel. were considered to be intermediate taxa between Achnatherum and Stipa s. s. and Achnatherum and Piptatherum, respectively. Piptochaetium and Nassella were considered to be close relatives and Eriocoma was thought to be a New World vicariant of Piptatherum. Thomasson (1978, 1980, 1981, 1982, 1985) was first to document the phylogenetic importance of the lemma epidermal pattern in the Stipeae. Barkworth and Everett (1987) used this information extensively and pointed out that Stipa and Piptatherum have elongated lemma epidermal cells with sinuous lateral walls and that Achnatherum and Austrostipa have short lemma epidermal cells with slightly sinuous to strait lateral walls. Barkworth and Everett (1987) followed Tzvelev (1977) and used the shape of the lemma and callus and development of awn indumentums and therefore postulated a similar phylogenetic scheme. Hesperostipa and the 'Obtusa group' of Parodi (1946; =Anatherostipa) and Nassella and Piptochaetium, were thought to be two pairs of closely related genera. In a series of morphological studies (Barkworth 1990, 1993; Barkworth and Torres 2001; Cialdella and Guissani 2002; Thomasson 1978, 1982) and a phylogenetic study with a molecular analysis (Jacobs et al. 2000) it was suggested than Nassella and Piptochaetium shared a most recent common ancestor [i.e. to be sister genera] In more recent molecular phylogenetic analyses it was suggested that the Piptatherum/Oryzopsis complex along with Stipa s. s. and Hesperostipa were among early diverging lineages; Austrostipa was shown as a member of a derived 1120_kap_18_32_6k.indd 513 07/06/10 21.23 514 Romaschenko et al. clade (Jacobs et al. 2007) and Nassella was more closely related to Jarava than to Piptochaetium (Cialdella et. al 2007) The relationships between the Stipeae and the Phaenospermateae Duthieinae Anisopogon complex were tested in a matK (Doring et al. 2007) and ITS analysis (Romaschenko et al. 2007) In the latter analysis the poorly supported clade including Anisopogon, Danthoniastrum, Duthiea, Phaenosperma, and Sinochasea was recovered as sister clade to the Stipeae. Since the representatives of Meliceae Link ex Endl. and Diarrheneae (Ohwi) C.S. Campb. were not included in Romaschenko et al. (2007) analysis, no conclusion was suggested regarding their phylogenetic relationships. In Doring et al. (2007) a trichotomy was formed among members of the Meliceae, Stipeae, and a clade with Anisopogon, Danthoniastrum, Duthiea, Phaenosperma, and Sinochasea. The main objective of the present paper is to provide a phylogenetic hypothesis for all the currently accepted genera within the core Stipeae using plastid (trnK 5'matK, matK, trnHGUG psbA, trnL5' trnF, and ndhF) and nuclear ribosomal DNA ITS sequences. In addition, we hope to elucidate generic boundaries within the Stipeae and resolve questions regarding these lineages within the tribe. Materials and Methods Taxon Sampling Samples were chosen to represent the taxonomic diversity in the Stipeae. The sample set consists of 94 accessions/species (Appendix 1) representing all accepted genera (except Anemanthele) in the Stipeae (Soreng et al. 2003) as well as major intergeneric groups within the polyphyletic genera detected in our previous study (Romaschenko et al. 2008) We sampled evenly from both American and Eurasian groups of Achnatherum and Piptatherum, and included the type species for all groups. We included South American: Aciachne, Lorenzochloa (currently included in Ortachne) and Ortachne; North Am", "corpus_id": 4798179, "venue": "", "year": 2010, "author_names": [ "Konstantin Romaschenko", "Paul M Peterson", "Robert John Soreng", "Nuria Garcia-Jacas", "Alfonso Susanna" ], "n_citations": 32, "n_key_citations": 6, "score": 1 }, { "doc_id": "24145", "title": "Crossbreeding of Phyllostachys species (Poaceae) and identification of their hybrids using ISSR markers.", "abstract": "Crossbreeding is an efficient means to increase production and quality in plants; however, hybridization is seldom reported in bamboo. We crossbred two bamboo species Phyllostachys kwangsiensis (female parent) and Phyllostachys bambusoides (male parent) for the first time, and obtained suspected bamboo hybrids. We identified two bamboo hybrids from the above parents using PCR/ISSR. We concluded that ISSR markers are useful to identify bamboo hybrids, and that breeding between bamboo species is possible and useful.", "corpus_id": 24145, "venue": "Genetics and molecular research GMR", "year": 2010, "author_names": [ "X C Lin", "Yong Feng Lou", "James Z T Liu", "J Peng", "Gao-lun Liao", "Wei-Kuan Fang" ], "n_citations": 33, "n_key_citations": 2, "score": 0 } ]