bluuebunny/crossref_metadata_2025 huggingface dataset:
Ball-Milling of Gas Atomized Al88Ce8Fe4 Powders
Authors: Zhang Jian Qi , We Jian , Chang August , Chang Chen Yuan , Jia Jin Rong , Zhang Cai Xia , Jia Ji Yu , Feng Dian Chen , Wang Xue Mei , Zhao Yin Feng , Li Tao , He Hong , Huang Yong Chang , An Sheng Li
Published: November 2018

Gas atomized Al88Ce8Fe4 alloy powders were ball-milled and investigated at charge ratiosof 5:1, 15:1 and 30:1 and milling speeds of 150 and 200 [RPM], respectively. The morphology,microstructure and composition of the powders were examined by laser diffraction technique, SEM,EDS and XRD. The result indicates the evolution of the powders under milling experiences initiallycold welding, aggregating the powders into larger-sized disk-shaped particles; followed byfragmentation, forming smaller-sized equiaxed particles; and finally leading to a steady state, whereparticles morphology, composition and phases keep constantly unchanged. This procedure has beentestified as a general rule for milling at each of the charge ratios of 5:1, 15:1 and 30:1 and at millingspeeds of 150 and 200 [RPM] while milling at larger charge ratios or higher speeds drives faster toreach the steady state at which homogeneous, fine-sized glassy powders can be obtained.
Development of Multi-Objective Prediction Model for Wire Electrical Discharge Machining of Inconel 718 Nickel-Based Superalloy
Authors: Yang Ching Been , Lin Cang Ge , Chiang Hsiu Lu , Zhan Jia Lin
Published: November 2018

Owing to the fact that conventional Taguchi methods cannot predict the experimentresults of non-level values, this study developed a staged Taguchi neural network prediction modelthat combines the merits of experimental data from the Taguchi method and the learningcapabilities of artificial neural networks. We first used the optimal parameter combinations derivedfrom the L9 orthogonal array experiment data and grey relational analysis as training examples forthe Stage-1 network to construct a preliminary network. Next, we used the crucial factors in theoptimal parameter combinations derived from the grey relational analysis as additional trainingexamples for the Stage-2 network. The results of the staged Taguchi neural network predictionmodel indicate that the prediction performance of the preliminary network in Stage 1 was poor dueto an insufficient number of training examples, while the Stage-2 network produced excellentprediction results.
Influences of Defects on the Performance of Adhesively Bonded Sandwich Joints
Authors: Khosravani Mohammad Reza
Published: November 2018

Unique and desirable properties of composites, converted them to one of the favorablematerials in a wide range of applications. At present, various composites are utilized in aircraftinterior such as overhead bins, side walls, ceiling and bulkheads. Since adhesively bondedcomposite joints play crucial role in performance of various engineering components,manufacturing of the joints is an important issue. In the present work, an overview of compositesandwich joints is presented, and different types of defects on this component are outlined. Later,some techniques for detection of defects in the sandwich-structured composites are mentioned.Moreover, as a case study, strength and fracture of sandwich T-joints with and withoutmanufacturing defects are compared. The case study proved the role of manufacturing defects inunfavorable performance of the joints. Results of the case study indicated that it is necessary to usedifferent advanced techniques to investigate and assess performance of sandwich joints prior totheir utilization. Concerning to high applications of sandwich composite joints and limitations ofnondestructive tests, there is still a potential to provide a method or a technique which wouldestimate performance of the joints under different loading conditions.
The Efficiency of Phosphorus Removal of Synthetic Wastewater through Struvite Crystallization in an Aerated Fluidized Bed Reactor
Authors: Casoni Susmardi Masti , Purnomo Chandra Wahyu , Hidayat Muslikhin
Published: November 2018

The high organic material contained in wastewater released into the environment asresults of various sources of human activities, such as phosphorus, can cause eutrophication. Thestruvite crystallization in an aerated fluidized bed reactor is one of the methods which able toimprove the efficiency of phosphorus removal. In this study, a mixture of synthetic wastewaters andthe MgCl2 solution was treated in a fluidized bed reactor equipped with aeration to produce thestruvite which can be utilized as a slow release fertilizer. Subsequently, the effect of aeration atdifference influent flow rate was investigated to correlate with the changing of phosphorusconcentration in the reactor effluent. The experiments were conducted for 240 minutes with thevariation of aeration are 0.5 L/min to 1.5 L/min; variation of influent flow rate of syntheticwastewater is 150 ml/min to 350 ml/min, with a constant influent flow rate of MgCl2 solution is 50ml/min. These solutions were maintained at the condition of pH 9. The results showed that theoptimal efficiency of phosphor removal which accounted for 82.5% occurred when the aeration rateof 1.5 L/min in the influent flow rate of 150 ml/min. From these findings, it is revealed that theefficiency of P removal in wastewater is obtained by a crystallization process which utilizing anaerated fluidized bed reactor and by increasing the aeration rate and the reactants contact time.
Effect of DE-GMAW (Double Electroda Gas Metal Arc Welding)’s Resistance on Mechanical and Physical Properties of Aluminium Alloy Weld
Authors: Purwaningrum Yustiasih , Kusriyanto Medilla , Kurniawan Rudi , Rizky Okto Akbar
Published: November 2018

This paper presented the effect of DE-GMAW (Double electrode gas metal arc welding)resistance on mechanical and physical properties of aluminium alloywelded. DE-GMAWis amethodof welding process that use two electrode. A non consumable torch is added to bypass the current inorder to reduce the heat input. The variation resistance used were 15Ω, 30Ω and 45Ω. Universaltesting machine and Vickers microhardness were used to measured mechanical properties of weldmetals with respect to strength and hardness. The microstructure was investigated by microscopeoptic with 100 x magnification. The grain size of weld metals with resistance value 30Ω is finer than15Ω and 45Ω. Dye penetrant test shows DE-GMAW welding machine that made have goodperformance because it can produce welding joint without surface crack. The results show thatresistance values optimum to DE-GMAW welding on aluminium alloy 5051 with 4 mm thickness is30Ω. It can be seen from the tensile test that shows the highest tensile strength is found in the DEGMAWwelding with resistance values 30Ω.
Ultra-Sensitive H2S Gas Sensor Based on WO3 Nanocubes with Low Operating Temperature
Authors: Li Zhan Hong , Xie Ji , Hu Xiao Bing , Chen Cheng , Xie Li Li , Zhu Zhi Gang , Zheng Liao Ying
Published: November 2018

WO3 nanostructure with nanocube morphology was synthesized through acidification of Na2WO4·2H2O, which were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). Moreover, the result of the present work implied that the sensor fabricated by nanocube WO3 could detect the level of 330 ppb H2S, which is much lower than the threshold limit value of 10 ppm. Compared with other results, the nanocube WO3 sensor shows higher sensitivity, excellent selectivity and faster response/recovery to H2S. Especially, the best operating temperature of this nanocube WO3 for H2S detection is 100 °C.
Effect of Nickel Content on Mechanical Property and Microstructure for Sulfide Stress Corrosion High-Strength Steel
Authors: Zhang Si , Wang Ping , Zhu Fu Xian , Shi Ming Hao
Published: November 2018

Two types of steels which are different in Ni content were tested in three groups of different quenching temperatures and same tempering temperature respectively under the same conditions, and then tested the mechanical properties and observated the microstructure, comparing with the effects of different Ni content on the microstructure and properties. When 1Ni-steel is under the different quenching temperature, its tensile strength range is 1269-1290MPa and changes subtlely. The yield strength and impact energy reach the highest at 910°C, and the mircostructure is fine and uniform. With the quenching temperature increasing, the strength of 3Ni-steel decreases ,but the toughness increases comparing with both kinds of the steels, the microstructure of 3Ni-steel has much more hard phases in its tempered martensite microstructure. Its tensile strength, yield strength and toughness are higher than 1Ni-steel at the lower quenching temperature. The inclusions of 3 Ni-steel are characterized by spheroidization and refinement. In the NACE-A test, the SSC resistance of 3Ni-steel is better than that of 1Ni-steel, which indicates that the high Ni steel has better comprehensive properties.
Investigation on the Properties of the Brake Friction Materials for Oil Driller
Authors: Yuan Jia Zhi , Zeng Jing , Duan Zhen Xin , Pei Wen , Chen Hua
Published: November 2018

In this paper, phenolic resin-based composite materials were prepared using glass fiber instead of asbestos for the oil driller brake friction materials, and its impact performance and friction and wear properties were investigated, and compared with performance of asbestos containing material. The results showed that the impact strength of glass fiber reinforced material were higher than that of asbestos reinforced material. When the friction speeds were constant, the friction coefficient of asbestos reinforced material changed in the range of 0.308~0.4302, and the glass fiber reinforced material was 0.308~0.425.The glass fiber can replace asbestos as a reinforced material for oil driller brake friction materials.
Enhanced Comprehension of the Continuous Fusion Bonding Process of Multi-Material Structures
Authors: Reincke Tobias , Hartwig Sven , Dilger Klaus
Published: November 2018

In comparison to monolithic composite structures, tailored multi-material structures offer high potential considering lightweight design approaches in combination with cost efficient manufacturing processes. Roll forming enables flexible large scale production of hybrid structures, due to the continuous manufacturing process as well as high degree of automation. The multi-material structures consist of steel sheets which are selectively reinforced by unidirectional carbon fibre reinforced thermoplastics (CFR-TP). In view of minimizing process steps and decreasing cycle times, both materials are joined by fusion bonding. Therefore, CFR-TP is heated above melting temperature of thermoplastic matrix and joined to the steel surface under defined pressure and time. However, joining of both materials within a continuous process is still challenging due to a lack in terms of process comprehension. Consequently, multi-material specimens were manufactured depending on various process parameters as temperature of either material or processing speed and tested mechanically by floating roller peel test for the evaluation of the adhesion between both materials. Furthermore, viscosity of matrix was determined and investigations of CFR-TP interface were performed by Fourier transform infrared spectroscopy. The results show the requirement of a defined CFR-TP temperature and the change in crystalline structure of the matrix in dependency of the processing.
Development of a Novel Protocol Based on Blood Clot to Improve the Sensitivity of qPCR Detection of Toxoplasma gondii in Peripheral Blood Specimens
Authors: Gutierrez-Loli Renzo , Ferradas Cusi , Diestra Andrea , Traianou Aliki , Bowman Natalie , Bok Jeroen , Reimer-McAtee Melissa , Ramal Cesar , Ticona Eduardo , Steinberg Hannah , Mayta Holger , Calderon Maritza , Calla-Choque Jaeson S. , Sterling Charles , Gilman Robert H. , _ _
Published: November 2018

Quantitative polymerase chain reaction (qPCR) for Toxoplasma gondii multicopy genes has emerged as a promising strategy for sensitive detection of parasite DNA. qPCR can be performed from blood samples, which are minimally invasive to collect. However, there is no consensus about what type of blood specimen yields the best sensitivity. The development of a novel protocol for qPCR detection of T. gondii using blood clot, involving an appropriate DNA extraction method and the use of an internal amplification control to monitor the reaction is presented in the current study. Assays directed to the B1 and REP529 genes were performed in spiked specimens of whole blood, guanidine–ethylenediaminetetraacetic acid blood, and clot. The clot-based qPCR was shown to be more sensitive when compared with other types of specimens, detecting five and 0.05 T. gondii genomes, using B1 and REP529 targets, respectively. Finally, a comparative analysis with samples from HIV patients with clinical suspicion of toxoplasmosis was performed, demonstrating the detection of four positive suspected cases with clots compared with only one using guanidine–ethylenediaminetetraacetic acid blood. The high analytical sensitivity and the cost-effective advantages offered by clot supports this methodology as a good laboratory tool to monitor parasite burden.
Intervention Packages for Early Visceral Leishmaniasis Case Detection and Sandfly Control in Bangladesh: A Comparative Analysis
Authors: Huda M. Mamun , Ghosh Debashis , Alim Abdul , Almahmud Md. , Olliaro Piero L. , Matlashewski Greg , Kroeger Axel , Mondal Dinesh
Published: November 2018

We compared the efficacy of three intervention packages for active case detection (ACD) of visceral leishmaniasis (VL)/post–kala-azar dermal leishmaniasis (PKDL) combined with sandfly control around an index case. The packages were 1) no kala-azar transmission activity involving indoor residual spraying (IRS) with deltamethrin, peri-domestic deployment of larvicide with temephos, and house-to-house search for cases; 2) fever camp (FC) plus durable wall lining (DWL) with deltamethrin; and 3) FC plus insecticide (deltamethrin) impregnated bed-nets (ITN) around an index case. Fever camp includes 1-day campaign at the village level to screen and diagnose VL, PKDL, leprosy, malaria, and tuberculosis among residents with chronic fever or skin disease. Efficacy was measured through yield of new cases, vector density reduction, and mortality at 1, 3, 6, 9, and 12 months following intervention. Fever camp + DWL was the most efficacious intervention package with 0.5 case detected per intervention, 79% reduction in vector density (incidence rate ratio [IRR] = 0.21, P = 0.010), and 95.1% (95% confidence interval: 93.4%, 96.8%) sandfly mortality at 12 months. No kala-azar transmission activity was efficacious for vector control (74% vector reduction, IRR = 0.26, P < 0.0001 at 9 months; and 84% sandfly mortality at 3 months), but not for case detection (0 case per intervention). Fever camp + ITN was efficacious in detection of VL/PKDL cases (0.43 case per intervention), but its efficacy for vector control was inconsistent. We recommend index case–based FC for ACD combined with DWL or IRS plus larvicide for sandfly control during the consolidation and maintenance phases of the VL elimination program of the Indian subcontinent.
Acute Flavivirus and Alphavirus Infections among Children in Two Different Areas of Kenya, 2015
Authors: Hortion Jimmy , Mutuku Francis M. , Eyherabide Ana L. , Vu David M. , Boothroyd Derek B. , Grossi-Soyster Elysse N. , King Charles H. , Ndenga Bryson A. , LaBeaud A. Desiree
Published: November 2018

Alphaviruses and flaviviruses are known to be endemic in Eastern Africa, but few data are available to evaluate the prevalence of these infections. This leads to missed opportunities for prevention against future outbreaks. This cohort study investigated the frequency of alphavirus and flavivirus incident infections in two regions of Kenya and identified potential risk factors. Seroconversions for alphavirus and flavivirus infections were identified by immunoglobulin G enzyme-linked immunosorbent assay (IgG-ELISA) in a cohort of 1,604 acutely ill children over the year 2015. The annual incidence was 0.5% (0.2–1.2%) for alphaviruses and 1.2% (0.7–2.2%) for flaviviruses. Overall, seroprevalence was significantly higher for alphaviruses in western Kenya than on the coast (P = 0.014), whereas flavivirus seroprevalence was higher on the coast (P = 0.044). Poverty indicators did not emerge as risk factors, but reliance on household water storage was associated with increased exposure to both alphaviruses and flaviviruses (odds ratio = 2.3).
Case Report: Severe Disseminated Gonococcal Infection with Polyarticular Gout: Two Cases in Older Travelers
Authors: Smith Emma L. , Hodgetts Kay E. , Ralph Anna P. , Anstey Nicholas M.
Published: November 2018

Two male travelers with histories of gout and hazardous alcohol consumption, presented with a triad of severe culture-positive disseminated gonococcal infection, crystal-positive polyarticular gout, and gonococcal soft tissue collections, following unprotected sexual contact in The Philippines. Both men initially attributed symptoms to gout, since their usual joints were affected, but clinical deterioration occurred with self-administration of anti-inflammatory agents alone. The clinical courses were severe and protracted, requiring aggressive management of infection with prolonged intravenous antimicrobials and repeated surgery, and prolonged anti-inflammatory agents for gout. Joint symptom onset in each case occurred within a week of sexual exposure in conjunction with hazardous alcohol ingestion. We speculate that acute dissemination of infection to previously damaged joints triggered polyarticular gout, with progressive infection, exacerbated by unopposed anti-inflammatory agents and delayed antibiotics. Disseminated gonococcal infection can occur with polyarticular gout and delays in recognition and treatment, including while traveling, can lead to severe disease from both.
Rainfall variability and the impact on maize and rice yields in north – central Nigeria
Authors: Ntat G.H. , Ojoy S , Suleiman Y.M.
Published: November 2018

Rainfall variability in terms of amount, distribution (spatial, seasonal and diurnal), intensity and frequency of rainy days influence crop production and yield. This paper examined rainfall temporal trend inter-annual and spatial distribution and the implication of mean annual rainfall on maize and rice yield in North – Central Geopolitical Region of Nigeria. Daily rainfall records of thirty years period (1987 – 2016) at six stations in the region, namely; Abuja, Ilorin, Jos, Lokoja, Makurdi and Minna were obtained from the archive of the Nigerian Meteorological Agency (NiMet), Abuja and maize and rice yield for the period 1994 – 2016 obtained from the Bureau of Statistics of Nigeria were used for the study. The rainfall data were subjected to statistical analysis using descriptive analysis. Mann-Kendal test and Kriging method were used for the spatio–temporal rainfall distribution while the impact of rainfall amount on maize and rice yields was investigated using regression analysis. The annual rainfall amount experienced in study area was between 1100 mm and 1700 mm. Out of the six stations studied; only Abuja indicated statistically significant increased trend while the other five stations in the region showed no significant trend. Rainfall distribution in the region is largely influence by the Jos Plateau rather than Latitudes or Longitude. Generally, rainfall influences maize and rice yield positively but at varying degree from station to stationKeywords: Rainfall variability, Trend, Distribution, Impact
User experience: tool for Human-Computer Interaction (HCI) design
Authors: Olawole David Oluwasegun
Published: November 2018

The changes in methodology and ideological implementation of User Experience (UX) and Human Computer Interaction (HCI) in the 21st century shift focus from traditional analogue process management to digital process management of organisations’ data and content. In instance of a university interactive web portal whereby institutions provide parties with access to data and information on the university portal. A focus shift from HCI design to UX design for improved peoples’ experience when navigating the institutions portal. A focus on understanding the relationship between UX and HCI as a phenomenon, considering the analogy of interactive organisation (institution, company, government) portal. Need for system developers to adopt UX evaluation, a methodology to ensure effective usability, accessibility and efficiency of a designed system. The nature of the study has its’ background in HCI. HCI relate to the mental (cognitive), technology and affective factors that influence the way people use computer for interaction in a computer-supported collaborative work/learn (CSCW/L) environment. The objective of this study is to ascertain at what point or put succinctly, what stage of system development does a system developer commits to user experience evaluation methods (UXEMs)?Keywords: Human Computer Interaction, User Experience, User Evaluation Method
An evaluation of the challenges, prospect and opportunities of air transport operation in Nigeria
Authors: Adeoye Akin Babatunde , Musa Abdulrahman , Afolabi Oluwaseyi Joseph
Published: November 2018

Mobility and accessibility provided by the transport system have been playing a major role in shaping countries, influencing the location of social and economic activity, the form and size of cities, and the style and pace of life by facilitating trade, permitting access to people and resources, and enabling greater economies of scale, worldwide and throughout history. This study examined the challenges, prospect and opportunities of air transport operation in Nigeria. Data was obtained from the administration of questionnaires to 170 aviation workers at Muritala Muhammed Airport in Lagos, who were randomly selected. Simple descriptive statistics, Chi-Square and Analysis of variance were employed. The findings show that private investment is critical to sustainable air transport infrastructure in Nigeria. Based on available facts and figure, it can be concluded that government should create an enabling environment for the airlines and come up with maintenance, repair and overhaul policy, as well as address the foreign exchange challenge facing airlines in Nigeria.Keywords: Infrastructure, Operation, Enabling Environment, Transport, Aviation
Measuring Social Communication in the Community: Novel Tools for Advancing Family Participation
Authors: Irvin Dwight W. , Bard Anna , Wallisch Anna , Little Lauren M.
Published: November 2018

Natural contexts and family involvement are key features of effective intervention approaches. However, the measurement of community participation and parent engagement with children remains complex. Therefore, we examined the feasibility of combining use of the Language ENvironment Analysis (LENA®) system and a global positioning system (GPS; i.e., Qstarz® BT-Q1000XT). The LENA is a small speech recognition device that captures and quantifies full-day recordings of the natural language environment. The Qstarz BT-Q1000XT is a wearable GPS data logger that allows identification of the locations a person visits. The marrying of these measures allows for an accurate representation of community settings that afford children greater social communication opportunities. Our results show that the combination of measures provides meaningful social communication location data. Also, the participating caregiver reported that the collection of measures was feasible across community settings.
Atmospheric measurements of the terrestrial O2 : CO2 exchange
ratio of a mid-latitude forest
Authors: Battle Mark O. , Munger J. William , Conley Margaret , Sofen Eric , Perry Rebecca , Hart Ryan , Davis Zane , Scheckman Jacob , Woogerd Jayme , Graeter Karina , Seekins Samuel , David Sasha , Carpenter John
Published: November 2018

Abstract. Measurements of atmospheric O2 have been used to quantify large-scale fluxes of carbon between the oceans, atmosphere and land since 1992 (Keeling, 1992). With time, datasets have grown and estimates of fluxes have become more precise, but a key uncertainty in these calculations is the exchange ratio of O2 and CO2 associated with terrestrial photosynthesis and respiration. We present measurements of atmospheric O2 and CO2 collected over a six-year period from a mixed deciduous forest in central Massachusetts, USA (42.537° N, 72.171° W). Using a differential fuel-cell based instrument for O2 and a non-dispersive infrared analyzer for CO2, we analyzed an airstream collected within and ~6 m above the forest canopy. Averaged over the entire period of record, we find these two species covary with a slope of −1.058 ± 0.006 moles of O2 per mole of CO2. If we limit the data to values collected on summer days within the canopy, the slope is −1.01 ± 0.01. These are the conditions in which biotic influences are most likely to dominate, suggesting that this slope is our best estimate of αB. This result is significantly different from value of 1.1 widely used in O2-based calculations of the global carbon budget, suggesting adjustments of these O2-based flux estimates may be in order.
Evaluation of lossless and lossy algorithms for the compression of
scientific datasets in NetCDF-4 or HDF5 formatted files
Authors: Delaunay Xavier , Courtois Aurélie , Gouillon Flavien
Published: November 2018

Abstract. The increasing volume of scientific datasets imposes the use of compression to reduce the data storage or transmission costs, specifically for the oceanography or meteorological datasets generated by Earth observation mission ground segments. These data are mostly produced in NetCDF formatted files. Indeed, the NetCDF-4/HDF5 file formats are widely spread in the global scientific community because of the nice features they offer. Particularly, the HDF5 offers the dynamically loaded filter plugin functionality allowing users to write filters, such as compression/decompression filters, to process the data before reading or writing it on the disk. In this work, we evaluate the performance of lossy and lossless compression/decompression methods through NetCDF-4 and HDF5 tools on analytical and real scientific floating-point datasets. We also introduce the Digit Rounding algorithm, a new relative error bounded data reduction method inspired by the Bit Grooming algorithm. The Digit Rounding algorithm allows high compression ratio while preserving a given number of significant digits in the dataset. It achieves higher compression ratio than the Bit Grooming algorithm while keeping similar compression speed.
Estimating flood damage in Italy: empirical vs expert-based modelling approach
Authors: Amadio Mattia , Scorzini Anna Rita , Carisi Francesca , Essenfelder Arthur H. , Domeneghetti Alessio , Mysiak Jaroslav , Castellarin Attilio
Published: November 2018

Abstract. Flood risk management generally relies on economic assessments performed using flood loss models of different complexity, ranging from simple univariable to more complex multivariable models. These latter accounts for a large number of hazard, exposure and vulnerability factors, being potentially more robust when extensive input information is available. In this paper we collected a comprehensive dataset related to three recent major flood events in Northern Italy (Adda 2002, Bacchiglione 2010 and Secchia 2014), including flood hazard features (depth, velocity and duration), buildings characteristics (size, type, quality, economic value) as well as reported losses. The objective of this study is to compare the performances of expert-based and empirical (both uni- and multivariable) damage models for estimating the potential economic costs of flood events to residential buildings. The performance of four literature flood damage models of different nature and complexity are compared with the performance of univariable, bivariable and multivariable models empirically developed for Italy and tested at the micro scale based upon observed records. The uni- and bivariable models are produced testing linear, logarithmic and square root regression while multivariable models are based on two machine learning techniques, namely Random Forest and Artificial Neural Networks. Results provide important insights about the choice of the damage modelling approach for operational disaster risk management.
Accessibility, urban form, and property value: A study of Pudong, Shanghai
Authors: Guan ChengHe , Peiser Richard
Published: November 2018

The effects of metro system development and urban form on housing prices highly depend on the spatial temporal conditions of the urban neighborhoods. However, scholars have not yet comprehensively examined these interactions at a neighborhood-scale. This study assesses metro access, urban form, and property value at both district- and neighborhood-levels. The study area is in Pudong, Shanghai where metro system development coincides with rapid urban growth. 279 neighborhoods are systematically and randomly selected for the district-level investigation and 31 neighborhoods selected from Pudong for neighborhood-level investigation. The analysis of variance shows that metro access is more positively correlated to property price in Pudong. The Pearson correlation, principle component, and ordinary least square regression analyses find that while accessibility attributes have positive influence on housing prices, neighborhood characteristics also exhibit pronounced impact on property price change over time. This study extends our knowledge on how metro system development interacts with land use efficiency; discusses planning policies corresponding to development stage that produce more sustainable urban form.
KONFLIKTŲ VALDYMAS DAUGIAPROFILINĖJE LIGONINĖJE: PERSONALO NUOMONĖ
Authors: Kudrevičiūtė Marija , Stankūnas Mindaugas
Published: November 2018

Tyrimo tikslas. Ištirti Lietuvos daugiaprofilinės ligo­ninės N klinikos darbuotojų nuomonę apie konfliktų valdymą.

Tyrimo metodika. Tyrimas atliktas 2014 m. anoni­minės anketos apklausos būdu. Atsitiktinai apklausti 98 tiriamieji, dirbantys Lietuvos daugiaprofilinėje ligoninėje, N klinikoje. Naudotas Tomo-Kilmano (Thomas–Kilmann) konflikto sprendimo būdo ins­trumentas. Kokybinių požymių tarpusavio priklau­somumui vertinti taikytas chi kvadrato (χ2) kriterijus. Priklausomai nuo imčių dydžio, buvo taikytas tikslus Fišerio (Fisher) arba Monte Carlo (mažoms imtims) ir asimptominis χ2 kriterijus.

Rezultatai. Konfliktų dažnis darbo aplinkoje 1 – 2 kartus per savaitę. 47 proc. atvejų konfliktai vyksta tarp darbuotojų. 67,4 proc. konfliktus įvertino nei­giamai, teigiamai – 7,2 proc. darbuotojų. Dažniausi konfliktų tipai: pseudokonfliktai (34,9 proc.), tar­pasmeniniai (31,0 proc.) ir struktūriniai (22,9 proc.). Esant konfliktinei situacijai, 50,0 proc. respondentų naudoja vengimo strategiją, 27 proc. - ieško kompro­miso, 15 proc. – prisitaiko, 6 proc. taiko konkurenci­jos metodą, 2 proc. bendradarbiauja.

Išvados. Dažniausiai vyksta pseudokonfliktai, tar­pasmeniniai ir struktūriniai konfliktai. Dažniausiai naudojami vengimo ir kompromiso konfliktų val­dymo metodai. Labai retai konfliktų metu naudoja­mas bendradarbiavimo metodas.
Multi-factor Stock Selection Model Based on Adaboost
Authors: Zhang Ru , Cao Tong
Published: November 2018

In this paper, we established multi-factor stock selection model based on Adaboost by using Adaboost to integrate the custom week classifier model, and Shanghai and Shenzhen 300 stocks are taken as the research object. During the stock retest, the first is make a comparative test between Adaboost multi-factor stock selection model and the traditional multi-factor model, among them, the factor large class isn’t considered in the multi-factor stock selection model. And the results of two contrast experiment showed that the multi-factor stock selection model based on Adaboost has stronger profitability and less risk than the traditional multi-factor model.
A Walk Up Nassau Street: Poe's Literary New York in the 1840s
Authors: Ehrlich Heyward
Published: November 2018

As a member of the literary community of Nassau Street in New York in the 1840s, Poe achieved many lifelong career goals, benefiting from its many opportunities to achieve prominence through new publication, reflecting relative freedom from didactic restraints and greater toleration for experimentation in subject matter, tone, and aesthetic form.
Weather, Mood and Stock Market Returns in Argentina
Authors: Karim Bakri Abdul , Mohd Shukri Muhammad Hafiz , Chyu Yuin Sharon Tay
Published: November 2018

The paper examines the relationship between weather and stock market returns in the Argentina’s stock market using daily data from 2001 to 2014 and regression models. The data consists of stock market returns, temperature, humidity and wind.  The empirical findings show that all weather variables (temperature, humidity and wind) have significant relationship with stock market returns in some of the trading days in the week. We also find evidence of the existence of day-of-week effect in the stock market. On average, the highest return falls on Friday and lowest return falls on Monday. Temperature is considered very significant in influencing the stock market returns in Argentina. Our findings suggest that the stock market returns are higher when the temperature is higher. This phenomenon is related to the seasonal affective disorder (SAD). We can conclude that stock market of Argentina is not informational efficient. The results have major implications for traders, individual investors, fund managers and financial institutions to make investment planning in the Argentina’s stock market.
Financial cost of elective day of surgery cancellations
Authors: Turunen Elina , Miettinen Merja , Setälä Leena , Vehviläinen-Julkunen Katri
Published: November 2018

Operative care is one of the major areas of healthcare services as over 310 million surgeries are conducted yearly. Surgery cancellations is a widely used indicator when evaluating the quality of preoperative care. Cancellations cause financial lost for organizations, however there is only limited research about the costs. The aim of this study was to evaluate the cost of elective day of surgery (DOS) cancellations in 13 operative specialties at a university hospital in Finland between September 1, 2015 and May 31, 2016 after a structured preoperative protocol was implemented to practice and a cancellation rate of 4.7% was recognized. Procedure prices conducted the data for the research and were collected from the hospital’s invoicing system. Financial loss and savings of cancellations were calculated from the total cost of procedures. As a result the total cost of DOS cancellations during the nine-month time period was 953,374.27 euros and mean loss of a single cancelled operation was 2,459.91 euros. The total of material savings for the hospital were 106,917.33 euros. As a conclusion, DOS cancellations cause unnecessary wastage, and financial aspects should be followed and evaluated systematically by setting goals and providing continuing developments.
A multi-approach management intervention can lower C-section rate trends: The experience of a Third Level Referral Center
Authors: A.G. De Belvis , C. Neri , C. Angioletti , B. Carducci , S. Ferrazzani , A. Lanzone , A. Caruso
Published: November 2018

Objective: To report the experience developed in a Third Level Referral Center in performing a multifaceted intervention strategy to reduce Caesarian Sections (CS) rate. A comparison of our results with the performance of the best Italian hospitals for number of deliveries and CS has been performed.Methods: A monitoring system was set up, based on a prospective collection of all deliveries from 2013 to 2017, according to Robson’s classification. Data have also been collected retrospectively at a regional and national level to compare our results to other institutions. The multi-approach intervention consisted of evidence based tools: process management, training, multiprofessionalism, development of planning and control systems, continuous monitoring, audit and feedback.Results: The percentage of primary CS decreased from 26.71% in 2013 to 15.03% in 2017 (RR adjusted considering the regional average: 0.87 in 2013; 0.57 in 2017, p < .001). A raise of 19.76% in the annual volume of deliveries was registered. Such results have also been confirmed after comparing to the best performing Italian centers. From 2013 to 2016 the percentage of primary CS decreased from 27.02% to 18.04% (RR adjusted considering the regional average: 1.04 in 2013, p > .05; 0.74 in 2016, p < .001), while there was an increase in the annual volume of deliveries from 3,311 to 4,219.Conclusions: Our study confirms that multifaceted interventions can strengthen a continuous quality and safety improvement approach. This is of crucial relevance in the obstetric field and in the Italian country, where overall performance in CS needs to be improved.
Safety culture in the context of operating room: Nurses' perception regarding notification of errors/adverse events
Authors: Vinagre Teresa , Marques Rita
Published: November 2018

The notification of errors/adverse events is one of the central aspects for the quality of care and patient safety. The purpose of this pilot study is to analyse the safety culture of the operating room in relation to the errors/adverse events and their notification, in the nurses’ perception. It is a quantitative, descriptive-exploratory pilot study. A survey “Nurses’ Perception regarding Notification of Errors/Adverse Events” was applied, consisting of 8 closed questions to an intentional non-probabilistic sample consisting of 43 nurses working in the operating room of a private hospital in Lisbon. The results showed that only 51.2% of the adverse events that caused damage to patients were always notified by the nurses. Of the various adverse events occurred, 60.5% were not reported, justified by “lack of time”. There was also a negative correlation between professional experience and the frequency of error notification (p < .05). The factors referred as those that contributed most to the occurrence of errors were, pressure to work quickly (100.0%), lack of human resources (86.0%), demotivation (86.0%), professional inexperience and hourly overload (83.7%), lack of knowledge (74.4%) and communication failures (65.1%). The perception of Patient Safety was assessed by the majority of participants as “acceptable”. In conclusion, it was evident the reduced notification of adverse events in the operation room so it becomes crucial to focus on the continuous training of health professionals, as well as work on the error, to increase a safety culture with quality.
The Impact of Extrinsic Motivation on Employees’ Performance: A Comparative Analysis of Food and Textile Industries in Sindh, Pakistan
Authors: Shaikh Sumra Haleem , Pathan Saima Kamran , Khoso Imamuddin
Published: November 2018

The purpose of present study is to examine the effects of external motivational factors on employees. Current study is employed Herzberg’s two-factor theory to investigate the effects of extrinsic factors on employees’ performance.in food and textile industries of Sindh, Pakistan. Seven point Likert scale is used for survey purpose. Reliability test is conducted for knowing the internal consistency of extrinsic factors as independent variables and employees’ performance as dependent variable. Pearson correlation, Analysis Of Variance (ANOVA), t test and multiple regression techniques are employed for data analysis.The results found that all extrinsic factors have positive and significant effects on employees. This study provides good amount of knowledge on the importance of extrinsic factors for improving the employees’ performance.
Durable Relationship and Family Members “by Analogy” in the European Union
Authors: Feldman Tanel , Mazzeschi Marco
Published: November 2018

Rights of residence derived from a durable relationship with an EU citizen, are left to a relatively wide discretion of the Member States. Pursuant to Article 2.2 (b) Directive 2004/38/EC (“Directive”), “the partner with whom the Union citizen has contracted a registered partnership, on the basis of the legislation of a Member State, if the legislation of the host Member State treats registered partnerships as equivalent to marriage and in accordance with the conditions laid down in the relevant legislation of the host Member State” qualifies as family member. Provided that they have a durable relationship (duly attested) with an EU citizen, pursuant to Article 3.2(b), unregistered partners are as well beneficiaries of the Directive. The durable relationship was expressly excluded from the scope of Article 2(2)(b): “Unlike the amended proposal, it does not cover de facto durable relationships” (EU Commission, Document 52003SC1293). Article 3 (2)(a) covers “other family members” (no restrictions as to the degree of relatedness) if material support is provided by the EU citizen or by his partner or where serious health grounds strictly require the personal care of the family member by the Union citizen. Pursuant to Article 3.2, “other family members” and unregistered partners can attest a durable relationship, must be facilitated entry and residence, in accordance to the host Member State’s national legislation. In the light of Preamble 6 Directive, the situation of the persons who are not included in the definition of family members, must be considered “in order to maintain the unity of the family in a broader sense”. The questions discussed in this paper are the following: (i) are Member States genuinely considering the concept of durable relationship in view of maintaining the unity of the family in a broader sense? and (ii) how to overcome legal uncertainty and which criteria, both at EU and at international level, can be taken into account in order to assess whether a durable relationship is genuine and should be granted the rights set forth by the Directive?
UTLENIANIE 4- i 5-PIERŚCIENIOWYCH WĘGLOWODORÓW W OBECNOŚCI WĘGLA AKTYWNEGO
Authors: Włodarczyk-Makuła Maria
Published: November 2018

Celem pracy było określenie podatności na rozkład 4- i 5-pierścieniowych WWA podczas procesu utleniania oraz podczas procesu utleniania i adsorpcji prowadzonych symultanicznie. Badania technologiczne prowadzono z wykorzystaniem biologicznie oczyszczonych ścieków koksowniczych. Utlenianie prowadzono ditlenkiem diwodoru, natomiast adsorpcję – z wykorzystaniem węgla aktywnego. Wielopierścieniowe węglowodory aromatyczne analizowano za pomocą układu złożonego z chromatografu gazowego i spektrometru masowego. Badania prowadzono przy stałej wartości pH środowiska reakcji i stałej temperaturze. Efektywność degradacji badanych węglowodorów w warunkach utleniania była w zakresie od 4 do 42%. W przypadku symultanicznego utleniania i adsorpcji na węglu aktywnym stopień usunięcia WWA wahał się od 17 do 81% w zależności od węglowodoru.
ZAWARTOŚĆ WYBRANYCH METALI CIĘŻKICH W POWIERZCHNIOWYCH WARSTWACH GLEB TERENÓW ZIELENI UNIWERSYTECKIEJ
Authors: Kostecki Jakub , Druszcz Piotr , Pater Oskar , Stadnik Miłosz , Piwecka Natalia , Cierpiński Damian , Kołek Arkadiusz , Malinowska Aleksandra , Rybicka Aleksandra , Bartyzel Tobiasz
Published: November 2018

Świadomie kształtowane tereny zieleni powinny być nie tylko atrakcyjne wizualnie, lecz również bezpieczne dla użytkowników. W pracy przedstawiono analizę stanu zieleńców uniwersyteckich zlokalizowanych na campusie A Uniwersytetu Zielonogórskiego. Badania obejmowały właściwości fizyczno-chemiczne gleb, w tym analizę zawartości form ogólnych i biodostępnych wybranych metali ciężkich. Stwierdzono, że gleba na terenach zieleni wykazuje znaczne przekształcenia antropogeniczne, jednak zawartość metali ciężkich nie przekracza obowiązujących limitów.
Vacuum Ultraviolet Spectroscopy as a New Tool for GC Analysis of Terpenes in Flavors and Fragrances
Authors: Hodgson Alex , Cochran Jack
Published: November 2018

Background: Traditional detectors such as flame ionization detection and MS have issues with coeluting isomers like terpenes; however, unique vacuum UV (VUV) absorbance spectra can be used to deliberately compress chromatography. Objective: Deconvolution capabilities under various run conditions of GC-MS and GC-VUV arecompared. Methods: A standard terpenes mix and tea tree essential oil were run on both GC-MS (63 and 14 min run times) and GC-VUV (22, 11, and 7 min run times). Results: The three GC-VUV methods showed good precision for10 terpenes, as well as with the 63 min GC-MS method. The 14 min GC-MS method struggled precisely quantifying some terpenes. Highlights: GC-VUV allows for faster run times while providing the same level of quantitative accuracy.
Transition, not revolution
Authors: Popov Mikhail , Heidrich Claudia , Shore Andrew
Published: November 2018

Watch the VIDEO.This presentation is aiming to discuss the effects of conversion of a journal to OA and suggests that this is likely to cause a loss of authorship of the journal. Further, we conclude that transitioning to OA via hybrid models is a more sustainable approach than flipping all journals to OA at once.As an example we use RSC Advances – a high quality journal in multidisciplinary chemistry published by RSC.Since launch in 2012, RSC Advances has achieved rapid growth and worldwide acceptance. In 2016 we converted RSC Advances to OA to:• give researchers free access to a broad scope of quality work• make the research we publish more visible• positively influence the future of OA publishing• demonstrate that OA publishing can be both affordable, and sustainableAn anticipated result of flipping to open access is the loss of authorship and submissions to competing journals. In fact, in 2017 just over 6600 articles were published in RSC Advances – less than a half of the publishing output in 2016.  The loss of authorship and a risk of authors choosing to publish in a competing journal is the reason why RSC cannot go full OA (all journals) yet.This does not mean that RSC suspended the support of OA. We continue introducing new OA journals like Nanoscale Advances, and new OA transition models like Read & Publish, which allows authors to access all content behind paywall and publish OA at no extra cost.
The S.O.H.A. project: An open science project from the South
Authors: Hachani Samir
Published: November 2018

Our presentation aims to show an original facet of open science: a project from the Souths and for the Souths. In S.O.H.A (Science Ouverte Haiti Afrique), we use Souths in plural because we believe in a plurality of layers of development. Our project aims to showcase Souths' research in indigenous languages, in local settings and in subjects that are of interest to the indigenous people. We will present the different program and tutorials in the project to prove that an open science from the Souths and for the Souths is possible.