bluuebunny/crossref_metadata_2025_split huggingface dataset:
How Reduced Search Costs and the Distribution of Bidder Participation Affect Auction Prices
Authors: Overby Eric , Kannan Karthik 
Published: February 2015

Electronic commerce allows bidders to find and participate in auctions regardless of location. This reduction in bidders’ search costs has important effects on bidders’ participation patterns and sellers’ revenue. The “demand expansion” effect occurs when reduced search costs allow bidders to participate in more auctions. The “demand distribution” effect occurs when reduced search costs allow bidders to distribute themselves more evenly across auctions. We focus on the latter effect by modeling when a more even distribution of bidder participation across auctions increases seller revenue. We apply our analytical insights to 65,718 sequential auctions (comprising over 10 million vehicles) in the wholesale used vehicle market. We show that reduced search costs can increase seller revenue by smoothing the distribution of bidder participation across auctions, even if the aggregate amount of bidder participation remains constant. This contributes new results to the auction theory literature and generates novel insights for sellers seeking increased revenue. This paper was accepted by Lorin Hitt, information systems.
Human Capital Formation and International Trade
Authors: Unel Bulent 
Published: February 2015

Abstract
This paper develops a two-country, two-sector model of trade where the only difference between two countries is the cost of human capital formation. It is shown that this difference completely shapes the pattern of trade. Trade, in turn, affects the distribution of human capital both at extensive and at intensive margins, income distribution, and welfare in each country. Since not all agents gain from trade, the paper also investigates the conditions under which trade between two countries becomes possible if the final decision in each country is based on majority voting. Finally, the paper shows that lowering the cost of human capital in one country has asymmetric effects on human capital formation and the income inequality between skilled and unskilled workers across countries.
Adhesion of human mesenchymal stem cells can be controlled by electron beam-microstructured titanium alloy surfaces during osteogenic differentiation
Authors: Neuss Sabine , Panfil Claudia , Duarte Campos Daniela Filipa , Weber Michael , Otten Christian , Reisgen Uwe , Fischer Horst 
Published: February 2015

AbstractSeveral studies focusing on bone tissue engineering demonstrated that given microstructuring of an implant surface has a strong effect on its interaction with cells, and their adhesion and differentiation. In the present study, geometrically structured titanium alloy surfaces are shown to be able to guide cell adhesion during differentiation
The Pragmatics of Pronoun Choice in China English: Corpus Evidence from Advanced English Students’ Oral Proficiency Exam
Authors: Xu Hongmei , Sayer Peter 
Published: February 2015

AbstractChina English is defined as a developing variety of international English spoken in China with some characteristic features at the level of phonology, grammar, lexis and pragmatics. The authors present the analysis of the use of the first-person plural pronoun
Optimizing cellulose fibrillation for the production of cellulose nanofibrils by a disk grinder
Authors: Hu Chuanshuang , Zhao Yu , Li Kecheng , Zhu J.Y. , Gleisner Roland 
Published: February 2015

AbstractThe fibrillation of a bleached kraft eucalyptus pulp was investigated by means of a laboratory-scale disk grinder for the production of cellulose nanofibrils (CNF), while the parameters disk rotating speed, solid loading, and fibrillation duration were varied. The cumulative energy consumption was monitored during fibrillation. The degree of polymerization (DP) and water retention value (WRV) of the resultant cellulose fibrils were determined as measures of the degree of fibrillation, which was also visualized by scanning electron microscopy, field emission-scanning electron microscopy, and transmission electron microscopy imaging. A higher rotating speed than 1500 rpm did not improve the fibrillation judged by DP and WRV measurements. Solid loading has an insignificant effect on fibrillation in a wide range. The energy consumption (E) was determined as a function of the DP and WRV. The optimal grinding conditions were between 1200 and 1500 rpm at 2.0%–2.2% solid loading.
Nanofibrillation of TEMPO-oxidized bleached hardwood kraft cellulose at high solids content
Authors: Kekäläinen Kaarina , Liimatainen Henrikki , Biale Floriane , Niinimäki Jouko 
Published: February 2015

AbstractCellulose nanofibrils (NF) are usually produced by disintegration processes at low solids content (<5%). However, the high water content reduces the capacity of production, increases the transportation costs of NF suspensions and narrows the possible applications of NF. The goal of the present study was to test a grinding technique based on oscillatory ball milling. Bleached kraft pulp cellulose was nanofibrillated at high solids contents (≥50%), which was obtained from 2,2,6,6-tetramethylpiperidine-1-oxyl radical-oxidized pulp. The grinding method was only successful when the charge density was at least 0.5 mmol g-1. NFs and cellulose nanocrystals were identified at a charge density of 1.1 mmol g-1and a solids content of 50%. The size reduction of the formed particles was observed by means of flow fractionation and imaging and viscosity measurements after increasing the charge density from 0.3 to 1.1 mmol g-1. A solids content increment and a charge density decrement resulted in particles with low aspect ratio rather than in nanofibrils. Wide angle X-ray diffraction measurements showed the transformation of crystalline cellulose into amorphous material in the case of grounding at 93% solids content.
Ayurveda in changing scenario of diabetes management for developing safe and effective treatment choices for the future
Authors: Banerjee Subhadip , Debnath Parikshit , Rao Prasanna N. , Tripathy Tapas Brata , Adhikari Anjan , Debnath Pratip K. 
Published: February 2015

Abstract
Ayurveda described diabetes mellitus (DM) as Madhumeha. This ancient evidence-based system of medicine enumerated various herbs and formulations for its management, which needs scientific validation. Whereas translational “bedside to bench” approach in biomedical research is an upcoming concept, its application in traditional and complementary medicine can be interesting. The intersecting concepts in the field Ayurveda and translational research needs “omics” approach. The Ayurvedic biology concepts about DM have its close relations with present systems biology approach. Metabolic changes causing tissue damage connected with genetic and immunological irregularities leading to insulin resistance coincide with ancient knowledge. Combinatorial therapy according to Prakriti type as elucidated by Ayurgenomics should be carried on for further research. “Bedside to bench” approaches in research utilizing metabolomics and pharmacogenomics approach can be a major step towards changing the therapeutic strategy towards diabetes. Prameha which is described as the pre-diabetic state is a novel concept in Ayurvedic etiopathogenesis, while metabolomic parameters like lipid level in urine can be a thrust area of research to have a pre-diabetic screening method in high-risk populations. This tradition-guided research paradigm can open up novel opportunities in traditional knowledge-inspired systems biology and drug discovery against diabetes.
A patient developing anaphylaxis and sensitivity to two different GnRH analogues and a review of literature
Authors: Ökdemir Deniz , Hatipoğlu Nihal , Akar Himmet Haluk , Gül Ülkü , Akın Leyla , Tahan Fulya , Kurtoğlu Selim 
Published: February 2015

AbstractGonadotropin-releasing hormone analogues are used in the treatment of prostate cancer, breast cancer, endometriosis, and uterine leiomyomas in adults and often in the treatment of precocious puberty in children. Many adverse effects have been reported for gonadotropin-releasing hormone analogues, but anaphylaxis is rarely reported as an adverse effect. Frequent cross-reactions, particularly during childhood, and diversity of the time of onset of anaphylactic manifestations complicate the diagnosis. A patient who exhibited anaphylactic allergic reactions to two different agents used in the treatment of central precocious puberty presented here because the case has an atypical course and is the first in the literature.
Party Autonomy in Tort Theory and Reform
Authors: Robinette Christopher J. 
Published: February 2015

AbstractTort theory has been dominated by a debate between scholars who view tort law as rooted in individualized justice and scholars who argue tort law is an instrument of social policy. This dialogue has distracted scholars from the more important issue of how to properly separate cases worthy of individualized justice treatment from those better suited to routinized resolution. Tort law already contains both types. One potentially fruitful method of separation is to empower the parties themselves to make the decision. They could do so by voluntarily trading liability for the elimination or substantial reduction in non-economic damages. Such an approach honors individualized justice by leaving the parties in control of the case and, if used, would increase both compensation and administrative efficiency, arguably without a reduction in the deterrent effect. Although the purpose of this article is not to design the ideal proposal(s) to embody such an approach, Jeffrey O’Connell has given us several models to begin our deliberations. It is only the latest contribution in his impressive legacy.
The Kirchhoff Index of Quasi-Tree Graphs
Authors: Xu Kexiang , Liu Hongshuang , Das Kinkar Ch. 
Published: February 2015

Abstract
Resistance distance was introduced by Klein and Randić as a generalisation of the classical distance. The Kirchhoff index Kf(G) of a graph G is the sum of resistance distances between all unordered pairs of vertices. In this article we characterise the extremal graphs with the maximal Kirchhoff index among all non-trivial quasi-tree graphs of order n. Moreover, we obtain a lower bound on the Kirchhoff index for all non-trivial quasi-tree graphs of order n.
Nitrogen-Containing Coronenes: Theoretical Evaluation of the Influence of Aza-substitution on their Aromaticity
Authors: Pop Raluca , van Staden Jacobus , Diudea Mircea 
Published: February 2015

Abstract
The aromaticity of coronene derivatives where two C atoms of each outer six-membered ring are replaced by N have been investigated. Three types of substitution, namely 1,2-, 1,3-, and 1,4- are proposed. Computations of the geometric (HOMA index), energetic (HOMO-LUMO gap), and magnetic indices (NICS(0) and NICS(1)) were performed, and the results compared to the ones obtained for the all-carbon species. The results outline that the aza-derivatives have aromatic character comparable to the all-carbon species and an enlarged HOMO-LUMO gap.
Resonant Raman Scattering in MoS2
Authors: Gołasa Katarzyna , Grzeszczyk Magdalena , Leszczyński Przemysław , Nogajewski Karol , Potemski Marek , Babiński Adam 
Published: February 2015

ABSTRACTResonant Raman scattering in molybdenum disulfide (MoS2) is studied as a function of the sample thickness. Optical emission from 1ML, 2ML, 3ML and bulk MoS2 is investigated both at room and at liquid helium temperature. The experimental results are analysed in terms of the recently proposed attribution of the Raman peaks to multiphonon replica involving transverse acoustic phonons from the vicinity of the high-symmetry M point of the MoS2 Brillouin zone. It is shown that the corresponding processes are quenched in a few monolayer samples much stronger than the modes involving longitudinal acoustic phonons. It is also shown that along with the disappearance of multiphonon replica, the Raman modes, which are in-active in bulk become active in a few-monolayer flakes.
Effect of Micro Health Insurance on Access and Utilization of Health Services in Karnataka
Authors: Savitha S. 
Published: February 2015

Background:Lack of sustainable and affordable health financing mechanisms in India has exposed the poor ininformal sector to iatrogenic poverty. Hardship financing of health services has negative financial consequences on thefuture income of these households. This can be mitigated through micro health insurance (MHI) because it aims to removefinancial barriers to access and utilize health services.Objectives:Recognizing the dearth of studies on impact of MHI schemes in India, we carried out an in-depth study onSampoorna Suraksha Programme (SSP) in Karnataka to assess the effect on access and utilization of healthcare services.Methods:We designed a descriptive cross sectional household survey that collected data from 1146 households toevaluate the impact using logistic regression analysis.Results:Insured individuals were more likely to access and utilize inpatient services compared to uninsured individuals.Moral hazard measured as length of stay in the hospital was absent. Horizontal equity in utilization based on gender andincome was observed. Insured used private providers than public hospitals or self-medicine. The results of the studysupport the positive impact of MHI on access and utilization of health services.Conclusion:The findings of the study enhance our understanding of the positive role of MHI in the promotion of betterhealth behavior of the poor people who usually forego treatment during illness. This would reinforce policymakers toadvocate MHI to mitigate iatrogenic poverty in India, the land of villages.
Contamination of Composite Resin by Glove Powder and Saliva Contaminants: Impact on Mechanical Properties and Incremental Layer Debonding
Authors: Martins NM , Schmitt GU , Oliveira HL , Madruga MM , Moraes RR , Cenci MS 
Published: February 2015

SUMMARY
This study investigated the influence of digital manipulation of a composite resin (Z250; 3M ESPE, St Paul, MN, USA) with gloves contaminated with powder and/or human stimulated saliva on the mechanical properties and incremental layer debonding of the restorative. The six groups tested were powdered gloves with or without saliva, powder-free gloves with or without saliva, powdered gloves with saliva cleaned with 70% ethanol, and no digital manipulation or contamination (control). Diametral tensile strength, flexural strength, flexural modulus, and incremental layer shear bond strength were evaluated. Each composite increment was digitally manipulated for 10 seconds. Data from each test were separately analyzed using analysis of variance and the Student-Newman-Keuls test (α=0.05). No significant differences for diametral tensile strength were observed. Manipulation of the composite using powder-free gloves with saliva or using gloves cleaned with ethanol generated higher flexural strength and modulus compared to the other groups. The control group and the group manipulated using powdered gloves with saliva generally showed lower mechanical performances. Lower incremental layer bond strength was observed for the group manipulated with powdered gloves without saliva. The control group and the groups manipulated with powdered gloves with saliva or cleaned with ethanol showed higher shear bond strengths. Most of the failures were cohesive. In conclusion, digital manipulation might be important for the composite resin to achieve better mechanical performance and incremental layer bond strength, provided that the gloves are not contaminated. Cleaning the gloves with ethanol might avoid the negative effects of digital manipulation using contaminated gloves.
Localized and Generalized Simulated Wear of Resin Composites
Authors: Barkmeier WW , Takamizawa T , Erickson RL , Tsujimoto A , Latta M , Miyazaki M 
Published: February 2015

SUMMARY
A laboratory study was conducted to examine the wear of resin composite materials using both a localized and generalized wear simulation model. Twenty specimens each of seven resin composites (Esthet•X HD [HD], Filtek Supreme Ultra [SU], Herculite Ultra [HU], SonicFill [SF], Tetric EvoCeram Bulk Fill [TB], Venus Diamond [VD], and Z100 Restorative [Z]) were subjected to a wear challenge of 400,000 cycles for both localized and generalized wear in a Leinfelder-Suzuki wear simulator (Alabama machine). The materials were placed in custom cylinder-shaped stainless steel fixtures. A stainless steel ball bearing (r=2.387 mm) was used as the antagonist for localized wear, and a stainless steel, cylindrical antagonist with a flat tip was used for generalized wear. A water slurry of polymethylmethacrylate (PMMA) beads was used as the abrasive media. A noncontact profilometer (Proscan 2100) with Proscan software was used to digitize the surface contours of the pretest and posttest specimens. AnSur 3D software was used for wear assessment. For localized testing, maximum facet depth (μm) and volume loss (mm3) were used to compare the materials. The mean depth of the facet surface (μm) and volume loss (mm3) were used for comparison of the generalized wear specimens. A one-way analysis of variance (ANOVA) and Tukey post hoc test were used for data analysis of volume loss for both localized and generalized wear, maximum facet depth for localized wear, and mean depth of the facet for generalized wear. The results for localized wear simulation were as follows [mean (standard deviation)]: maximum facet depth (μm)—Z, 59.5 (14.7); HU, 99.3 (16.3); SU, 102.8 (13.8); HD, 110.2 (13.3); VD, 114.0 (10.3); TB, 125.5 (12.1); SF, 195.9 (16.9); volume loss (mm3)— Z, 0.013 (0.002); SU, 0.026 (0.006); HU, 0.043 (0.008); VD, 0.057 (0.009); HD, 0.058 (0.014); TB, 0.061 (0.010); SF, 0.135 (0.024). Generalized wear simulation results were as follows: mean depth of facet (μm)—Z, 9.3 (3.4); SU, 12.8 (3.1); HU, 15.6 (3.2); TB, 19.2 (4.8); HD, 26.8 (6.5); VD, 29.1 (5.5); SF, 35.6 (8.4); volume loss (mm3)—Z, 0.132 (0.049); SU, 0.0179 (0.042); HU, 0.224 (0.044); TB, 0.274 (0.065); HD, 0.386 (0.101); VD, 0.417 (0.076); SF, 0.505 (0.105). The ANOVA showed a significant difference among materials (p&lt;0.001) for facet depth and volume loss for both localized and generalized wear. The post hoc test revealed differences (p&lt;0.05) in localized and generalized wear values among the seven resin composites examined in this study. The findings provide valuable information regarding the relative wear characteristics of the materials in this study.
Effect of Phosphoric Acid Pre-etching on Fatigue Limits of Self-etching Adhesives
Authors: Takamizawa T , Barkmeier WW , Tsujimoto A , Scheidel DD , Erickson RL , Latta MA , Miyazaki M 
Published: February 2015

SUMMARY
The purpose of this study was to use shear bond strength (SBS) and shear fatigue limit (SFL) testing to determine the effect of phosphoric acid pre-etching of enamel and dentin prior to application of self-etch adhesives for bonding resin composite to these substrates. Three self-etch adhesives—1) G- ænial Bond (GC Corporation, Tokyo, Japan); 2) OptiBond XTR (Kerr Corp, Orange, CA, USA); and 3) Scotchbond Universal (3M ESPE Dental Products, St Paul, MN, USA)—were used to bond Z100 Restorative resin composite to enamel and dentin surfaces. A stainless-steel metal ring with an inner diameter of 2.4 mm was used to bond the resin composite to flat-ground (4000 grit) tooth surfaces for determination of both SBS and SFL. Fifteen specimens each were used to determine initial SBS to human enamel/dentin, with and without pre-etching with a 35% phosphoric acid (Ultra-Etch, Ultradent Products Inc, South Jordan, UT, USA) for 15 seconds prior to the application of the adhesives. A staircase method of fatigue testing (25 specimens for each test) was then used to determine the SFL of resin composite bonded to enamel/dentin using a frequency of 10 Hz for 50,000 cycles or until failure occurred. A two-way analysis of variance and Tukey post hoc test were used for analysis of SBS data, and a modified t-test with Bonferroni correction was used for the SFL data. Scanning electron microscopy was used to examine the area of the bonded restorative/tooth interface. For all three adhesive systems, phosphoric acid pre-etching of enamel demonstrated significantly higher (p&lt;0.05) SBS and SFL with pre-etching than it did without pre-etching. The SBS and SFL of dentin bonds decreased with phosphoric acid pre-etching. The SBS and SFL of bonds using phosphoric acid prior to application of self-etching adhesives clearly demonstrated different tendencies between enamel and dentin. The effect of using phosphoric acid, prior to the application of the self-etching adhesives, on SBS and SFL was dependent on the adhesive material and tooth substrate and should be carefully considered in clinical situations.
A Cosmopolitan Perspective of Globalization: Cultural and Aesthetic Consumption Among Young People
Authors: Cicchelli Vincenzo , Octobre Sylvie 
Published: February 2015

AbstractAuthor's focuses on understanding in which way people relate with globalization and what kind of imaginative process they engage in to do so in their everyday life. Article deals with the emerging cosmopolitan consciousness and practices that derive from young people's experiences of a globalized world. The paper is based on two different researches of young people, the rationale for such a choice being to understand the impact of emerging transformations on young people - who are often the barometers of societal change from both generational and life cycle perspectives.
GIS and Multi Criteria Decision Method Based Approach of Identifying Appropriate Landfill Sites for the City Of Chittagong
Authors: Ashraf M. Ali , Islam Md. Rezuanul , Adnan Sarfaraz Gani 
Published: February 2015

Urban solid waste management is a serious environmental issue confronting the cities in developing countries like Bangladesh. Apathy towards the problem, inadequacy of field level information and data, and resource constraints may be blamed for the dismal situation of solid waste management often visible in our cities. The most common problems associated with the absence of sustainable solid waste management practice include diseases transmission, odour nuisance, atmospheric and water pollution, visual blight, fire hazards and economic losses. In the three major cities of Bangladesh, Dhaka, Chittagong & Khulna, per capita production of solid waste is around 0.4kg /capita / day, but only a fraction of this waste is carried to the final disposal site. A recent study on Municipal Solid Waste Management found that waste generated in Chittagong was 0.352kg/cap/day. Considering per capita generation of solid waste as 0.352kg to 0.4kg per capita per day, for a population of 25, 92,459 distributed within the 41 wards of the city (BBS, 2011), total solid waste generated in Chittagong will be around 913 tons to 1037 tons per day in 2012. Currently, Chittagong City Corporation (CCC) has only two dumping yards: one at Ananda Bazar, Halishahar at the mid western part of the city and the other at Arefin Nagar, Pahartali at the northern tip of the city. None of these sites are sanitary landfill. Considering the city area of 168 sq. kms, only two dumping sites are not sufficient to cater to the requirement of the city. Long distances between the collection points and the disposal site are responsible for inefficient utilization of the CCC trucks and the resulting increase in the haulage time that eventually increases the costs of collection and disposal. This study utilized Geographic Information System (GIS) and Multi-Criteria Decision Method (MCDM) for the identification and selection of appropriate landfill sites within the city of Chittagong. Thirteen sites were identified initially. Out of these sites four were found to be most appropriate and suitable for use as landfill. DOI: http://dx.doi.org/10.3126/ije.v4i1.12174International Journal of Environment Volume-4, Issue-1, Dec-Feb 2014/15, page: 1-15