bluuebunny/crossref_metadata_2025 huggingface dataset:
Composites Based on Alternative Raw Materials at High Temperature Conditions
Authors: Melichar Tomáš , Bydžovský Jiří , Dufka Ámos
Published: June 2017

This paper presents newly developed polymer-cement composites.The primary binder (cement) was partially substituted byuse of blast-furnace slag and high-temperature fly ash. A lightweightaggregate – agloporite (grain size in range 1–2 mm) wasused among other components. This porous aggregate is producedfrom energy by-products (fly ash). Attention was focusedon the behavior of the composites when exposed to elevatedtemperatures (400 °C–1,000°C). The influence of several differentmethods of temperature decrease was assessed – slow(in furnace 1°C/min) and rapid (laboratory ambient 22°C andwater bath 18°C). Specific dimensional changes were determined,including strength characteristics and bulk density.Structural deterioration and microstructural changes of selectedspecimens were investigated by analytical techniques (SEM andCT). Compressive and bending tensile strength changed variouslydepending on temperature changes, including severalcooling conditions. Deterioration reactions (especially cracks)which were formed in investigated composite structures correspondedwith results of physico-mechanical testing. That wasconfirmed by using the CT and SEM.The fact that the agloporite has a positive effect on thermalresistance of developed polymer-cement composites wasproved. Almost no cracks or other failures were identified (byusing CT and SEM) in interfacial transition zones of agloporiteafter thermal stress. This indicates very good bond adhesionbetween the matrix and the porous aggregates during extremetemperature conditions (in case of different cooling methods).
The Effect of P-Wave Propagation on the Seismic Behavior of Steel Pipelines
Authors: Ghaznavi Oskouei Amin , Vatani Oskouei Asghar
Published: June 2017

Underground structures perceived as one the most vital infrastructures,which include a variety of tunnels, subway lines,gas, oil and water pipe. Plenty of studies devoted to the investigationof the effect of wave propagation method on the seismicbehavior of steel pipelines. It should be mentioned thatanalyses have been carried out on both clayey and sandy soilwith different propagation speed in each of them. The aim ofthis research is the investigation of the effect of longitudinalp-wave propagation method on the amount of nonlinear strainsof pipeline with different way such as Pipe and Psi element or2D modelling of soil. It became evident that the amounts ofMaximum tension strain produced in the pipe have the maximumdifference, equaling 3.4 per cent. In addition, it investigatesthe effect of frequency of input motion on nonlinearstrains and the effect of frequency content in the results.
Development of the Work-Related Well-Being Questionnaire Based on Seligman’s PERMA Model
Authors: Kun Ágota , Balogh Péter , Krasz Katalin Gerákné
Published: June 2017

Drawing on recent research on determinants of subjective well-being, we developed and conducted a pilot study of an employee well-being questionnaire using M. Seligman’s (2011) multidimensional PERMA model (Positive emotion, Engagement, positive Relationships, Meaning, and Accomplishment) model. Employees (N = 397) from postgraduate courses at the Budapest University of Technology and Economics (BME) completed a survey including 56 items which were theoretically relevant to the PERMA theory. Factor analyses recovered the expected five PERMA components and a negative emotion factor. Based on factor and reliability analyses, we reduced the 56 PERMA items to 35 items.  Our results support the multidimensional approach to defining and measuring multidimensional well-being. A multidimensional well-being assessment may be useful for understanding employees’ well-being, which can then be applied when developing policy and practice to increase well-being for all employees at work.
Current state of high-accuracy laser ranging
Authors: Vasiliev V P
Published: June 2017

Laser ranging currently provides millimeter accuracy at megameter scales, but even higher accuracy will be required in the near future. Factors limiting the accuracy are variations in the refractive index of Earth’s atmosphere and the structure of light-reflecting targets. In this paper, we briefly outline strategies to overcome these limitations and review the progress in deploying Russia’s satellite laser ranging network over recent decades. Some prospects for further progress in this field are also discussed.
Characterization and Sources of Aromatic Hydrocarbons (BTEX) in the Atmosphere of Two Urban Sites Located in Yucatan Peninsula in Mexico
Authors: Bretón Julia Griselda Cerón , Bretón Rosa María Cerón , Ucan Francisco Vivas , Baeza Cynthia Barceló , Fuentes María de la Luz Espinosa , Lara Evangelina Ramírez , Marrón Marcela Rangel , Pacheco Jorge Alfredo Montero , Guzmán Abril Rodríguez , Chi Martha Patricia Uc
Published: June 2017

Benzene, toluene, ethylbenzene, p-xylene, O3, NOx, CO, PM2.5 and meteorological parameters were measured in urban air of two sites in Merida, Yucatan, Mexico during 2016–2017. Samples were collected using 1.5 h time intervals at three different sampling periods before being analyzed by gas chromatography with flame ionization detection. The highest concentrations of BTEX occurred during midday and afternoon in spring and summer seasons. Mean concentrations of, BTEX for the Cholul and SEDUMA sites, respectively, were 40.91 μg/m3 and 32.86 μg/m3 for benzene; 6.87 μg/m3 and 3.29 μg/m3 for toluene; 13.87 μg/m3 and 8.29 μg/m3 for p-xylene; and 6.23 μg/m3 and 4.48 μg/m3 for ethylbenzene. The toluene/benzene and xylene/ethylbenzene concentration ratios indicated that BTEX levels at both sites were influenced by local and fresh emissions (vehicular traffic). Bivariate and multivariate analyses were performed in order to correlate BTEX concentrations with criteria air pollutants to infer their possible sources. Health risk assessment revealed that exposure to benzene exceeded the recommended value for the integrated lifetime cancer risk. These results suggest that Merida’s population is exposed to cancer risk, and changes in the existing environmental policies should therefore be applied to improve air quality.
On the Simplification of Statistical Mechanics for Space Plasmas
Authors: Livadiotis George
Published: June 2017

Space plasmas are frequently described by kappa distributions. Non-extensive statistical mechanics involves the maximization of the Tsallis entropic form under the constraints of canonical ensemble, considering also a dyadic formalism between the ordinary and escort probability distributions. This paper addresses the statistical origin of kappa distributions, and shows that they can be connected with non-extensive statistical mechanics without considering the dyadic formalism of ordinary/escort distributions. While this concept does significantly simplify the usage of the theory, it costs the definition of a dyadic entropic formulation, in order to preserve the consistency between statistical mechanics and thermodynamics. Therefore, the simplification of the theory by means of avoiding dyadic formalism is impossible within the framework of non-extensive statistical mechanics.
Willingness to Pay for Tourist Tax in Destinations: Empirical Evidence from Istanbul
Authors: Cetin Gurel , Alrawadieh Zaid , Dincer Mithat , Istanbullu Dincer Fusun , Ioannides Dimitri
Published: June 2017

Revenue generated from tourism taxes constitutes an important financial resource for local governments and tourism authorities to both ensure tourism sustainability and enhance the quality of tourist experiences. In order for tourism policy makers to create an efficient and fair tax system in tourism destinations, it is crucial to understand travelers’ perceptions concerning willingness to pay (WTP), tax rates, and their optimal allocation. The objectives of this paper, therefore, are to evaluate tourism taxes as a compensation tool to cover the costs of tourism and to measure tourists’ WTP. The paper also suggests a fair allocation of tax revenues based on tourists’ perceptions. A qualitative approach was used and data were collected through semi-structured in-depth interviews with international travelers to Istanbul, Turkey. The findings suggest that tourists are more likely to pay an additional amount of tax when this is earmarked for improvements in their experiences, but they are reluctant to take on liability concerning matters relating to destination sustainability. Based on the travelers’ perceptions, the paper also identified areas that need investment to improve tourist experiences. An interesting highlight of this paper is that the majority of surveyed respondents reported that their travel decisions would not be negatively affected even if the total cost of their vacation increased by one third. The findings are expected to offer fresh and much-needed insights into tourist taxation for tourism policy makers and stakeholders.
Accurate Short-Term Power Forecasting of Wind Turbines: The Case of Jeju Island’s Wind Farm
Authors: Park BeomJun , Hur Jin
Published: June 2017

Short-term wind power forecasting is a technique which tells system operators how much wind power can be expected at a specific time. Due to the increasing penetration of wind generating resources into the power grids, short-term wind power forecasting is becoming an important issue for grid integration analysis. The high reliability of wind power forecasting can contribute to the successful integration of wind generating resources into the power grids. To guarantee the reliability of forecasting, power curves need to be analyzed and a forecasting method used that compensates for the variability of wind power outputs. In this paper, we analyzed the reliability of power curves at each wind speed using logistic regression. To reduce wind power forecasting errors, we proposed a short-term wind power forecasting method using support vector machine (SVM) based on linear regression. Support vector machine is a type of supervised leaning and is used to recognize patterns and analyze data. The proposed method was verified by empirical data collected from a wind turbine located on Jeju Island.
Deriving Optimal End of Day Storage for Pumped-Storage Power Plants in the Joint Energy and Reserve Day-Ahead Scheduling
Authors: Chazarra Manuel , Pérez-Díaz Juan , García-González Javier
Published: June 2017

This paper presents a new methodology to maximise the income and derive the optimal end of day storage of closed-loop and daily-cycle pumped-storage hydropower plants. The plants participate in the day-ahead energy market as a price-taker and in the secondary regulation reserve market as a price-maker, in the context of the Iberian electricity system. The real-time use of the committed reserves is considered in the model formulation. The operation of the plants with the proposed methodology is compared to the ones that use an end of day storage of an empty reservoir or half of the storage capacity. Results show that the proposed methodology increases the maximum theoretical income in all the plants analysed both if they only participate in the day-ahead energy market and if they also participate in the secondary regulation service. It is also shown that the increase in the maximum theoretical income strongly depends on the size of the plant. In addition, it is proven that the end of day storages change notably in the new reserve-driven strategies of pumped-storage hydropower plants and that the proposed methodology is even more recommended if the secondary regulation service is considered.
Economic Analysis of a Photovoltaic System: A Resource for Residential Households
Authors: Cucchiella Federica , D’Adamo Idiano , Gastaldi Massimo
Published: June 2017

New installed annual solar photovoltaic (PV) capacity was equal to 76.1 GW in 2016 (+49%), reaching the total of 305 GW around the world. PV sources are able to achieve a greater energy independence, to tackle the climate change and to promote economic opportunities. This work proposes an economic analysis based on well-known indicators: Net Present Value (NPV), Discounted Payback Time (DPBT) and Levelized Cost of Electricity (LCOE). Several case studies are evaluated for residential households. They are based on three critical variables: plant size (1, 2, 3, 4, 5 and 6 kW), levels of insolation (1350, 1450 and 1550 kWh/(m2×y)) and share of self-consumption (30%, 40% and 50%). The profitability is verified in all case studies examined in this work. The role of self-consumption, that is the harmonization between demanded and produced energy, is strategic in a mature market to improve financial performance. A sensitivity analysis, based on both electricity purchase and sales prices (critical variables), confirms these positive results. The Reduction in the Emissions of Carbon Dioxide (ERcd) signifies an environmental improvement when a PV system is used as an alternative to a mix of fossil fuels. Finally, a policy proposal is examined based on a fiscal deduction of 50% fixing the period of deduction equal to 5 years.
Examining Associations of Environmental Characteristics with Recreational Cycling Behaviour by Street-Level Strava Data
Authors: Sun Yeran , Du Yunyan , Wang Yu , Zhuang Liyuan
Published: June 2017

Policymakers pay much attention to effectively increasing frequency of people’s cycling in the context of developing sustainable and green cities. Investigating associations of environmental characteristics and cycling behaviour could offer implications for changing urban infrastructure aiming at encouraging active travel. However, earlier examinations of associations between environmental characteristics and active travel behaviour are limited by low spatial granularity and coverage of traditional data. Crowdsourced geographic information offers an opportunity to determine the fine-grained travel patterns of people. Particularly, Strava Metro data offer a good opportunity for studies of recreational cycling behaviour as they can offer hourly, daily or annual cycling volumes with different purposes (commuting or recreational) in each street across a city. Therefore, in this study, we utilised Strava Metro data for investigating associations between environmental characteristics and recreational cycling behaviour at a large spatial scale (street level). In this study, we took account of population density, employment density, road length, road connectivity, proximity to public transit services, land use mix, proximity to green space, volume of motor vehicles and traffic accidents in an empirical investigation over Glasgow. Empirical results reveal that Strava cyclists are more likely to cycle for recreation on streets with short length, large connectivity or low volume of motor vehicles or on streets surrounded by residential land.
Globular Adiponectin Inhibits Lipopolysaccharide-Primed Inflammasomes Activation in Macrophages via Autophagy Induction: The Critical Role of AMPK Signaling
Authors: Kim Mi Jin , Kim Eun Hye , Pun Nirmala TiliJa , Chang Jae-Hoon , Kim Jung-Ae , Jeong Jee-Heon , Choi Dong Young , Kim Sang-Hyun , Park Pil-Hoon
Published: June 2017

The inflammasome acts as a key platform for the activation of pro-inflammatory cytokines. Adiponectin exhibits potent anti-inflammatory properties. However, the effect of adiponectin on the modulation of the inflammasome has not been explored. Herein, we show that globular adiponectin (gAcrp) suppressed lipopolysaccharide (LPS)-primed inflammasomes activation in murine peritoneal macrophages judged by prevention of interleukin-1β (IL-1β) maturation, caspase-1 activation, apoptosis-associated speck-like protein containing a caspase recruitment domain (ASC) speck formation, and pyroptotic cell death. Interestingly, pretreatment with 3-methyl adenine, a pharmacological inhibitor of autophagy, abrogated the suppressive effects of gAcrp on IL-1β secretion and caspase-1 activation, indicating the crucial role of autophagy induction in gAcrp-modulation of the inflammasome activation. In addition, inhibition of 5′Adenosine monophaspahate (AMP)-activated protein kinase (AMPK) signaling abolished suppressive effect of gAcrp on inflammasomes activation. Furthermore, autophagy induction or inhibition of the inflammasome activation by gAcrp was not observed in macrophages deficient in AMPK. Taken together, these results indicate that adiponectin inhibits LPS-primed inflammasomes activation in macrophages via autophagy induction and AMPK signaling-dependent mechanisms.
Development of Biopolymer Composite Films Using a Microfluidization Technique for Carboxymethylcellulose and Apple Skin Particles
Authors: Choi Inyoung , Chang Yoonjee , Shin So-Hyang , Joo Eunmi , Song Hyun , Eom Haeyoung , Han Jaejoon
Published: June 2017

Biopolymer films based on apple skin powder (ASP) and carboxymethylcellulose (CMC) were developed with the addition of apple skin extract (ASE) and tartaric acid (TA). ASP/CMC composite films were prepared by mixing CMC with ASP solution using a microfluidization technique to reduce particle size. Then, various concentrations of ASE and TA were incorporated into the film solution as an antioxidant and an antimicrobial agent, respectively. Fourier transform infrared (FTIR), optical, mechanical, water barrier, and solubility properties of the developed films were then evaluated to determine the effects of ASE and TA on physicochemical properties. The films were also analyzed for antioxidant effect on 2,2-diphenyl-1-picrylhydrazyl radical scavenging activity and antimicrobial activities against Listeria monocytogenes, Staphylococcus aureus, Salmonella enterica, and Shigella flexneri. From the results, the ASP/CMC film containing ASE and TA was revealed to enhance the mechanical, water barrier, and solubility properties. Moreover, it showed the additional antioxidant and antimicrobial properties for application as an active packaging film.
Fibrotic Hypersensitivity Pneumonitis: Key Issues in Diagnosis and Management
Authors: Kouranos Vasileios , Jacob Joseph , Nicholson Andrew , Renzoni Elizabetta
Published: June 2017

The diagnosis of hypersensitivity pneumonitis (HP) relies on the clinical evaluation of a number of features, including a history of significant exposure to potentially causative antigens, physical examination, chest CT scan appearances, bronchoalveolar lavage lymphocytosis, and, in selected cases, histology. The presence of fibrosis is associated with higher morbidity and mortality. Differentiating fibrotic HP from the idiopathic interstitial pneumonias can be a challenge. Furthermore, even in the context of a clear diagnosis of fibrotic HP, the disease behaviour can parallel that of idiopathic pulmonary fibrosis in a subgroup, with inexorable progression despite treatment. We review the current knowledge on the diagnosis, management, and prognosis of HP with particular focus on the fibrotic phenotype.
Coumarin–Tetrapyrrolic Macrocycle Conjugates: Synthesis and Applications
Authors: Cerqueira Ana , Almodôvar Vítor , Neves Maria , Tomé Augusto
Published: June 2017

This review covers the synthesis of coumarin–porphyrin, coumarin–phthalocyanine and coumarin–corrole conjugates and their potential applications. While coumarin–phthalocyanine conjugates were obtained almost exclusively by tetramerization of coumarin-functionalized phthalonitriles, coumarin–porphyrin and coumarin–corrole conjugates were prepared by complementary approaches: (a) direct synthesis of the tetrapyrrolic macrocycle using formylcoumarins and pyrrole or (b) by functionalization of the tetrapyrrolic macrocycle. In the last approach a range of reaction types were used, namely 1,3-dipolar cycloadditions, hetero-Diels–Alder, Sonogashira, alkylation or acylation reactions. This is clearly a more versatile approach, leading to a larger diversity of conjugates and allowing the access to conjugates bearing one to up to 16 coumarin units.
Response Surface Optimized Infrared-Assisted Extraction and UHPLC Determination of Flavonoid Types from Flos Sophorae
Authors: Mou Qianqian , He Jingxia , Yin Rongli , Yang Bin , Fu Meihong , Fang Jing , Li Hua
Published: June 2017

Single-factor experiment and Box-Behnken design were applied to optimize the infrared-assisted extraction (IRAE) of rutin, quercetin, kaempferol, and isorhamnetin from Flos sophorae. Four factors (extract solvent, solid-liquid ration, extraction time, infrared power) affecting the extraction yield of flavonoids were studied. Under optimized conditions the extraction yield was 33.199 ± 0.24 mg/g, which substantially improved, compared with heating reflux extraction (HRE) and ultrasonic-assisted extraction (UAE), while extraction time was only 9 min. The eluents were rich in 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2′-azobis (2-methyl-propionamidine) dihydrochloride radical scavenging potential (IC50 of DPPH: 53.44 ± 0.01 μg/mL, oxygen radical absorbance capacity (ORAC): 3785.83 ± 52 μmol/g) than the extracts obtained by HRE and UAE. In addition, an ultra-high performance liquid chromatography method was optimized for the identification and quantification of the tested flavonoids, and the method was validated based on its correlation coefficient (r), reproducibility (RSD, n = 5), and recovery values, which were 0.9994–0.9998, 0.74–1.83%, and 97.78–102.94%, respectively. These results confirmed that high extraction yield of flavonoids results in stronger antioxidant values and response surface methodology optimization of IRAE is a promising alternative to traditional extraction techniques for flavonoids from medicinal plants.
A Conjugated Polyelectrolyte with Pendant High Dense Short-Alkyl-Chain-Bridged Cationic Ions: Analyte-Induced Light-Up and Label-Free Fluorescent Sensing of Tumor Markers
Authors: Fu Nina , Wang Yijiao , Liu Dan , Zhang Caixia , Su Shao , Bao Biqing , Zhao Baomin , Wang Lianhui
Published: June 2017

A novel cationic water-soluble conjugated polyelectrolyte (CPE) of polyfluorene that contains 15% fraction of 2,1,3-benzothiadiazole (BT) units (PFC3NBT) has been obtained. PFC3NBT demonstrates intramolecular energy transfer from the fluorene segments to BT sites when negatively charged species (SDS or DNAs) are added, following by a shift in emission color from blue to green, has been developed. The high density of positive charges and pendent short alkyl chains of N-propyltrimethylammoniums endow PFC3NBT with high solubility and high fluorescence quantum efficiency of 33.6% in water. The fluorescence emission properties were investigated in the presence of adverse buffer solutions, different surfactants and DNA strands. Interesting fluorescence emission quenching at short wavelength and fluorescence resonance energy transfer (FRET) induced light-on at BT sites were observed and discussed in detail. Very different from previous reports, the fluorescence emission spectra transition happens with an enhancement of integrated fluorescent intensity. The analytes induced a light-up sensing system was studied with a PFC3NBT/SDS complex mode and confirmed with DNA/DNA-FAM sensing systems. More exciting preliminary results on label-free sensing of tumor markers were also reported by investigating the unique fluorescence response to 11 kinds of proteins. These results provide a new insight view for designing CPEs with light-up and label-free features for biomolecular sensing.
Rapid Global Calibration Technology for Hybrid Visual Inspection System
Authors: Liu Tao , Yin Shibin , Guo Yin , Zhu Jigui
Published: June 2017

Vision-based methods for product quality inspection are playing an increasingly important role in modern industries for their good performance and high efficiency. A hybrid visual inspection system, which consists of an industrial robot with a flexible sensor and several stationary sensors, has been widely applied in mass production, especially in automobile manufacturing. In this paper, a rapid global calibration method for the hybrid visual inspection system is proposed. Global calibration of a flexible sensor is performed first based on the robot kinematic. Then, with the aid of the calibrated flexible sensor, stationary sensors are calibrated globally one by one based on homography. Only a standard sphere and an auxiliary target with a 2D planar pattern are applied during the system global calibration, and the calibration process can be easily re-performed during the system’s periodical maintenance. An error compensation method is proposed for the hybrid inspection system, and the final accuracy of the hybrid system is evaluated with the deviation and correlation coefficient between the measured results of the hybrid system and Coordinate Measuring Machine (CMM). An accuracy verification experiment shows that deviation of over 95% of featured points are less than ±0.3 mm, and the correlation coefficients of over 85% of points are larger than 0.7.
Public Response to the Regulation Policy of Urban Household Waste: Evidence from a Survey of Jiangsu Province in China
Authors: Chen Feiyu , Chen Hong , Huang Xinru , Long Ruyin , Lu Hui , Yue Ting
Published: June 2017

The attitudes and response of “policy receivers” should be taken into more consideration when governments make regulation policy. This paper discusses the public’s degree of understanding, support willingness, implement willingness, and influence willingness to the policy, as well as the mutually responding scenario by using the quadratic response surface regression analysis from the perspective of “policy receivers”. The statistics of 951 segments of valid sample data and the regression analysis suggest that: (1) 42.51% of individuals have poor understanding with regard to the command and control policy of household waste, which indicates a deficiency in the publicity effectiveness of the policy; (2) the public’s understanding, support, implement, and influence of the policy present an inverted U shape change, indicating a low degree of understanding and influence willingness, and high support willingness and implement willingness; (3) overall, only support willingness can significantly affect the public’s willingness to implement the policy, while both the degree of understanding and support willingness can positively predict influence willingness significantly; (4) the consistency between the degree of understanding and support willingness has an incremental effect on implement willingness and influence willingness; and (5) the implement level to the charge collection policy increases when the degree of understanding exceeds support willingness by a certain value.
Galaxy And Mass Assembly (GAMA): A “No Smoking” Zone for Giant Elliptical Galaxies?
Authors: Khosroshahi Habib G. , Raouf Mojtaba , Miraghaei Halime , Brough Sarah , Croton Darren J. , Driver Simon , Graham Alister , Baldry Ivan , Brown Michael , Prescott Matt , Wang Lingyu
Published: June 2017

We study the radio emission of the most massive galaxies in a sample of dynamically relaxed and unrelaxed galaxy groups from the Galaxy and Mass Assembly survey. The dynamical state of the group is defined by the stellar dominance of the brightest group galaxy (BGG), e.g., the luminosity gap between the two most luminous members, and the offset between the position of the BGG and the luminosity centroid of the group. We find that the radio luminosity of the largest galaxy in the group strongly depends on its environment, such that the BGGs in dynamically young (evolving) groups are an order of magnitude more luminous in the radio than those with a similar stellar mass but residing in dynamically old (relaxed) groups. This observation has been successfully reproduced by a newly developed semi-analytic model that allows us to explore the various causes of these findings. We find that the fraction of radio-loud BGGs in the observed dynamically young groups is ∼2 times that of the dynamically old groups. We discuss the implications of this observational constraint on the central galaxy properties in the context of galaxy mergers and the super massive black hole accretion rate.
The Peculiar Multiwavelength Evolution Of V1535 Sco
Authors: Linford J. D. , Chomiuk L. , Nelson T. , Finzell T. , Walter F. M. , Sokoloski J. L. , Mukai K. , Mioduszewski A. J. , van der Horst A. J. , Weston J. H. S. , Rupen M. P.
Published: June 2017

We present multiwavelength observations of the unusual nova V1535 Sco throughout its outburst in 2015. Early radio observations were consistent with synchrotron emission, and early X-ray observations revealed the presence of high-energy (>1 keV) photons. These indicated that strong shocks were present during the first ∼2 weeks of the nova's evolution. The radio spectral energy distribution was consistent with thermal emission from week 2 to week 6. Starting in week 7, the radio emission again showed evidence of synchrotron emission, and there was an increase in X-ray emission, indicating a second shock event. The optical spectra show evidence of at least two separate outflows, with the faster outflow possibly having a bipolar morphology. The optical and near-infrared light curves and the X-ray

measurements indicated that the companion star is likely a K giant.
Black Hole Growth Is Mainly Linked to Host-galaxy Stellar Mass Rather Than Star Formation Rate
Authors: Yang G. , Chen C.-T. J. , Vito F. , Brandt W. N. , Alexander D. M. , Luo B. , Sun M. Y. , Xue Y. Q. , Bauer F. E. , Koekemoer A. M. , Lehmer B. D. , Liu T. , Schneider D. P. , Shemmer O. , Trump J. R. , Vignali C. , Wang J.-X.
Published: June 2017

We investigate the dependence of black hole accretion rate (BHAR) on host-galaxy star formation rate (SFR) and stellar mass (M
*) in the CANDELS/GOODS-South field in the redshift range of

. Our sample consists of

galaxies, allowing us to probe galaxies with

and/or

. We use sample-mean BHAR to approximate long-term average BHAR. Our sample-mean BHARs are derived from the Chandra Deep Field-South 7 Ms observations, while the SFRs and M
* have been estimated by the CANDELS team through spectral energy distribution fitting. The average BHAR is correlated positively with both SFR and M
*, and the BHAR–SFR and BHAR–M
* relations can both be described acceptably by linear models with a slope of unity. However, BHAR appears to be correlated more strongly with M
* than SFR. This result indicates that M
* is the primary host-galaxy property related to supermassive black hole (SMBH) growth, and the apparent BHAR–SFR relation is largely a secondary effect due to the star-forming main sequence. Among our sources, massive galaxies (

) have significantly higher BHAR/SFR ratios than less massive galaxies, indicating that the former have higher SMBH fueling efficiency and/or higher SMBH occupation fraction than the latter. Our results can naturally explain the observed proportionality between

and M
* for local giant ellipticals and suggest that their

is higher than that of local star-forming galaxies. Among local star-forming galaxies, massive systems might have higher

compared to dwarfs.
Hector Denis (1842-1913) : la politique comme sociologie appliquée ?
Authors: Wagnon Sylvain
Published: June 2017

Docteur en droit et en sciences naturelles, Hector Denis (1842-1913) fut non seulement sociologue, recteur de l’Université libre de Bruxelles, co-directeur de l’Institut des sciences sociales crée par Ernest Solvay mais aussi un parlementaire socialiste pendant plus de 20 ans. Disciple assumé de Proudhon et d’Auguste Comte, comment Hector Denis entend-il résoudre le paradoxe épistémologique et politique d’être à la fois un continuateur de l’œuvre d’Adolphe Quételet et un socialiste révolutionnaire ? À partir de ses écrits et de sa correspondance, nous voudrions comprendre ses positionnements, analyser en quoi la sociologie est pour Hector Denis un combat politique, un moyen de lutte pour l’émancipation humaine afin d’établir si son itinéraire est singulier ou permet-il de définir une image de la sociologie belge de la fin du XIX e siècle et du début du XX e siècle.
Migrants, épreuves d’exil et épreuve de l’étranger
Authors: Elghezouani Abdelhak
Published: June 2017

Les migrations anciennes et les plus récentes apportent une clinique marquée par la singularité des problématiques vécues et évoquées par les patients. Cette clinique interpelle l’intervenant en santé mentale, entre autres, et a fortiori le clinicien. Dans cet article, nous proposons des pistes de lecture s’appuyant sur l’anthropologie sociale et culturelle, ainsi qu’un dispositif d’intervention, dans l’idéal pluridisciplinaire. Cette démarche est fondée sur la prise en compte des étayages culturels et sociaux de la subjectivité, et celle de leur perte ou de leur efficacité, ainsi que sur un travail d’interprétation et d’élaboration collectif, soutenu et impliquant les co-intervenants dans le cadre d’un dispositif ponctuel d’intervention clinique transculturelle.
La question de la loi dans les thérapies d’enfants maltraités
Authors: de Becker Emmanuel
Published: June 2017

Toute transgression bouleverse les repères internes de la jeune victime. Soyons conscients que les effets de l’événement, surtout si celui-ci a été répété et perpétré par un membre de la famille, peuvent de manière durable, voire irréversible, porter atteinte à l’identité de l’enfant. Plus celui-ci tait la transgression, garde le secret dans un lien duel toxique, plus la destructivité de l’agression sera grande ; l’instance d’autorité morale n’est pas épargnée. A la lumière de trois vignettes cliniques, l’auteur propose de rappeler les bases et les éléments constitutifs du jugement moral chez l’enfant. Sera ensuite développée la question de la loi lors des rencontres thérapeutiques avec la jeune victime. L’attention sera portée sur quelques paramètres qui influenceront l’impact traumatique centralement sur l’instance surmoïque. Quatre axes de recommandation seront ensuite proposés dans la perspective de soutenir l’enfant dans une ré-élaboration d’une instance d’autorité morale.
Expliquer, comprendre et interpréter l’expérience humaine
Authors: Chamond Jeanine
Published: June 2017

Constitutives de l’Herméneutique, c’est-à-dire de l’art de l’interprétation, expliquer, comprendre, interpréter sont les opérations mentales, antinomiques ou interdépendantes selon les auteurs, inhérentes à l’existence et fondatrices du monde dans l’univers partagé du sens. Dans la perspective d’une anthropologie phénoménologique qui dit les conditions originaires du Vivre , la circularité de la compréhension thématisée par Heidegger dévoile le toujours-déjà-là du monde, en partie constitué avant qu’on le comprenne, qui pré-possibilise l’expérience transformatrice qui confère à l’homme sa légitimité à exister. L’auteur défend la thèse que la psychose, perte de l’évidence naturelle selon Blankenburg, est une crise de cette pré-possibilité que le schizophrène s’épuise à tenter de refonder.
Génétique des textes et génétique des cycles : pourquoi changer d’échelle ?
Authors: Lumbroso Olivier
Published: June 2017

Cet article propose à la génétique des textes de réfléchir à l’étude des grands corpus manuscrits, concaténés et discontinus, laissés au cours de la genèse des « œuvres-monde » telles que les cycles, les séries et les romans-fleuves, entre le xixe et le xxie siècle, de Balzac à Daniel de Roulet, en passant par Zola et Martin du Gard. Le spectacle de la création étendue d’un grand ensemble, supposant des changements de taille et de forme, une élasticité de l’espace-temps de l’écriture, des circuits d’édition variés, ou encore une invention soumise aux spasmes de l’Histoire, ne suppose-t-il pas des problématisations nouvelles dans le domaine des études de genèse ? Quels concepts, démarches et méthodes sont-ils appropriés à ce changement d’échelle qui ouvre le champ des analyses macrogénétiques des corpus massifs ? Le défi de l’envergure artistique ouvre des réflexions inédites sur le genre cyclique, ses héritages, ses imaginaires et ses ruptures novatrices. Il suppose aussi un nouveau regard sur la périodisation diachronique et historique, sur l’unité et la dislocation formelles des œuvres de fiction, sur le biographique et l’histoire culturelle. Les quelques propositions relatives à l’échelle cyclique, à l’autopoïétique, à la réflexivité esthétique, au projet panoptique et à sa révision identifient des aspects qui pourraient être pris en compte par le chantier nouveau de la génétique du cycle.
Reliable Communication Network for Emergency Response and Disaster Management in Underground Mines
Authors: Kamruzzaman S. M. , Fernando Xavier , Jaseemuddin Muhammad , Farjow Wisam
Published: June 2017

Emergency response and disaster management in underground mines are very challenging due to the hostile nature. Environment monitoring in mines has been an obligatory requirement to ensure safe working conditions for miners. Reliable communication network is essential to quickly detect the underground condition especially in emergency situation and to conduct proper rescue operations. This chapter presents an overview of reliable communication network needed for emergency response and disaster management in underground mines. The chapter begins by introducing the most common accidents occurring in the mining, underground mine environment and channel properties. Subsequently, communications in underground mines, existing underground communication and tracking systems, and disaster forecasting & mine safety management are discussed. The chapter also covers post-disaster mine communications & tracking systems and optimized backbone networks for underground mines. Finally, the chapter concludes by reporting relevant research at Ryerson Communications Lab and pointing out some open issues and possible research directions.
Exploring Cloud-Based Distributed Disaster Management With Dynamic Multi-Agents Workflow System
Authors: Habiba Mansura , Akhter Shamim
Published: June 2017

Natural disaster is one of the important topics in current researches. Disaster Management System (DMS) is a complex system and needs to perform a collection of tasks collaboratively along with the potentiality to change the configurations of the system dynamically. In the research era of workflow model, existing models mainly deal with temporal and static constrains. However they cannot be used to keep pace with an uncertainly dynamic system like disaster management. Considering all these significant DMS attributes we have designed a new dynamically configurable and changeable workflow model with the support of adaptive scheduling, for both successful and failed situations, and implemented in a distributed cloud system to maintain the rescue and reorganization activities of disaster situation. In order to simplify the system architecture, we have used Multi Agent System (MAS) for our design. The proposed system achieves a comparatively higher rate of successful job completion-higher rescheduling success rate and comparatively lower dropout rate.
Data Storages in Wireless Sensor Networks to Deal With Disaster Management
Authors: Gheisari Mehdi , Esnaashari Mehdi
Published: June 2017

Sensor networks are dense wired or wireless networks used for collecting and disseminating environmental data. They have some limitations like energy that usually provide by battery and storages in order that we cannot save any generated data. The most energy consumer of sensors is transmitting. Sensor networks generate immense amount of data. They send collected data to the sink node for storage to response to users queries. Data storage has become an important issue in sensor networks as a large amount of collected data need to be archived for future information retrieval. The rapid development and deployment of sensor technology is intensifying the existing problem of too much data and not enough knowledge. Sensory data comes from multiple sensors of different modalities in distributed locations. In this chapter we investigate some major issues with respect to data storages of sensor networks that can be used for disaster management more efficiently.
Child Resilience, Survival, and Development
Authors: Mafumbate Racheal
Published: June 2017

This chapter draws on a study which was conducted over a period of one and half years on orphans in Zimbabwe. While this chapter discusses extensive issues around resilience, survival and development of children, the highlights on their wellness are critically engaged with as well. The aim is to provide empirical insights to current and emerging debates on experiences of orphans especially from a developing country's perspective and Zimbabwe in particular. Drawing on the Ubuntu theory and the Wellness theory, the chapter consists of two sections. In section one; the chapter shall conceptualise the notions of Child Resilience, Survival and Development and further explore Ubuntu and Wellness through a theoretical lens. In section two there will be an in-depth discussion on issues around resilience, survival and development of orphans and how these are impacting their wellness.
Embracing Social Media to Advance Knowledge Creation and Transfer in the Modernized University
Authors: Lang Catherine , Lemon Narelle
Published: June 2017

New ways of utilizing technology in the online space are challenging how academics and students communicate, participate, and publish in modern universities, and thereby influence knowledge production, exchange, and transfer. Social media provides a suite of tools that are powerful additions to the pedagogy of academics and demonstrate that “the medium is the message” (McLuhan, 1960). These tools provide opportunity for public global dialogue, continuous discussions in the online space beyond the four walls of a physical classroom, and greater interactions between individuals and collective groups. In this chapter, the authors present several cases of social media use from the perspective of being researchers and teachers in higher education. Through strategic and precise use of social media, academics can create strong, connected, virtual communities to enhance knowledge production, exchange, and transfer within higher education. The cases demonstrate the ability to create and curate content while engaging with global connections to enhance and disrupt traditional ways of working in academia.
Using Creativity to Facilitate an Engaged Classroom
Authors: Sedivy-Benton Amy L. , Fetterly James M. , Wood Betty K. , MacFarlane Bronwyn D.
Published: June 2017

Student achievement, learning, and engagement are at the forefront of the educational concerns for both school administrators and teachers. While it seems to be common knowledge that engaged students tend to retain more from the lesson, a bigger question is how does a teacher create lessons that lead to this engagement? How can teachers structure these learning experiences in a creative way to obtain their objectives? One approach to this is by designing lessons with creative brainstorming to promote different ways of thinking. Creativity is the springboard that allows for critical thinking and engagement. The first instance of this should be in the planning of lessons. This chapter demonstrates how a simple lesson can be redesigned through creative practices and concludes with a checklist that can be used by school administrators, program coordinators, and teachers to quickly evaluate how engaging and creative their teaching truly is.
Impact of Social Networking Sites on Student Academic Performance
Authors: Harrath Youssef , Alobaidy Hadeel
Published: June 2017

The purpose of this research is to study the impact of Social Networking Sites on student academic performance. An online survey was conducted and 628 students of University of Bahrain replied. This research studies and explores the relationships between the use of SNS and students' academic performance. The survey questions (21) were grouped into 8 variables that identify the interest that the students draw from SNS. Furthermore, these variables aim to show the effects of SNS on students' academic performance and the futuristic online and offline paradigms that can enhance teaching methodology. The Statistical Package for Social Sciences (SPSS) was used to analyse the collected data and find correlations between SNS and the students' academic performance. From this research it was found that the SNS have positive and negative impacts on student academic performance. At the end, the authors came up with fruitful recommendations on how to get benefit from the SNS to improve the learning process.
Problem With Multi-Video Format M-Learning Applications
Authors: Adeyeye Michael O. , Musa Adebola G. , Botha Adele
Published: June 2017

The browser war is far from over, and the HTML5  tag has not improved video access despite its promises to work without specifying a plug-in. This chapter discusses m-learning with respect to video. It outlines the m-learning paradigm in conjunction with the technical aspects of video display in browsers, when varying media formats are used. The  tag used in this work renders videos from two sources with different MIME types. Feeds from the video sources, namely YouTube and UCT Matterhorn, are pulled by a Website that acts as a content aggregator. The content aggregator presents the various user-generated contents and lectures from the two repositories to both lecturers and students as a single source. By leveraging on HTML5, CSS3, and JavaScript, the application should render uniform video display and gather comments among various students, who use various personal mobile devices. Results show that a uniform display cannot be achieved when developing an application for personal mobile devices.
Learners' Perception of Engagement in Online Learning
Authors: Chakraborty Misha
Published: June 2017

The widespread popularity of online classes is evident in both professional and academic settings. Learners' engagement and satisfaction with the online courses, especially from the learners' perspective, are considered core to the promotion of quality learning. The voices of the present day's “virtual generation” need to be heard. The opportunities they see and the challenges they face can be utilized in creating engaging online learning environments. This chapter discusses online class engagement strategies that work. Multiple sources including semi-structured interviews with eight participants at a Research 1 University in Southwest United States, online course documents, email exchanges, and discussion transcripts were used to collect and analyze data. The findings indicate online class engagement factors and issues that need to be considered in effective design and successful delivery of online courses. The findings can be used to help faculties and learners achieve optimum benefits from online classes.
Next Wave of Tele-Medicine
Authors: Bwalya Kelvin J.
Published: June 2017

Information and Communication Technologies (ICTs) are being embedded into healthcare system front-end and back-end platforms both in the developing and developing world contexts in ways unimaginable 20 years ago. This trend has brought about ubiquity culminating into spatial-temporal healthcare delivery models where health practitioners and patients do not need to be simultaneously in the same physical domain in order for healthcare to be delivered. This chapter presents a development projectile of healthcare systems and explores interventions and current trends in pervasive healthcare delivery systems and makes a prognosis of what is to come in future. The first parts of the chapter generally present formulaic concepts about telemedicine. The chapter is hinged on literature and document reviews focussing on innovations in telemedicine and gives a commentary on what needs to be done to achieve true ubiquity in healthcare delivery systems both in the developing and developed world contexts. The chapter posits that pervasiveness will be highly enshrined into healthcare systems to a point where physicians will not have to leave their working space to provide a service. The design of the Defibrillator Drone, for example, provides an opportunity for healthcare application developers to develop information system applications which do not only carry medical supplies from one place to the other, but are able to reason and prescribe medications. With acute advances in the science of robotics and ICTs in general, this is a reality in the foreseeable future.