bluuebunny/crossref_metadata_2025_split huggingface dataset:
Defect induced modification of the surface gap and optical properties of C(111)2 × 1 surface
Authors: Shkrebtii A. I. , Marsili M. , Heritage E. , Pulci O. , Del Sole R. , Bechstedt F. 
Published: March 2012

AbstractTo resolve the long standing controversy between experimentally measured reflectance anisotropy (RA) of C(111)2 × 1 surface and theoretically calculated optical response, we demonstrated that defects at the C(111) surface in the form of minor hydrogen contamination, missing carbon atoms and/or terraces can be responsible for the appearance of the gap between the surface states, which is absent for the Pandey reconstructed ideal C(111)2 × 1. Ab initio DFT LDA calculations for such non‐ideal systems indeed demonstrate that even 6% of residual hydrogen (which is below the standard experimental detection limits) or 40 Å wide terraces are enough to sufficiently open the surface gap and account for the observed optical anisotropy.
Syntheses, Physico‐Chemical Studies and Antioxidant Activities of Transition Metal Complexes with a Perimidine Ligand
Authors: Azam Mohammad , Warad Ismail , Al‐Resayes Saud , Zahin Maryam , Ahmad Iqbal , Shakir Mohammad 
Published: March 2012

AbstractA series of mononuclear complexes of the type, [MLCl2] [M= CoII, NiII, CuII, and ZnII] with a pyrimidene‐type ligand, which was synthesized by the reaction of 2‐furaldehyde and 1, 8‐diaminonaphthalene, was obtained. The ligand and its complexes were characterized by elemental analysis, IR, NMR, EPR, and UV/Vis spectroscopy, ESI‐mass spectrometry, magnetic susceptibility, molar conductivity, and thermogravimetric analyses. On the basis of UV/Vis spectroscopic and magnetic susceptibility data, an octahedral arrangement was assigned around all metal ions. The low molar conductivity data for all the complexes show their non‐electrolytic nature. The thermal behavior of the complexes was studied by TGA analyses. The electrochemical study carried out on the CuIIcomplex exhibits a quasi reversible redox process. The ligand and its complexes showed potential antioxidant and antimicrobial activities.
A limited set of starch related genes explain several interrelated traits in potato
Authors: Werij Jeroen S. , Furrer Heleen , van Eck Herman J. , Visser Richard G. F. , Bachem Christian W. B. 
Published: March 2012

AbstractTo understand the molecular basis of potato starch related traits and the underlying starch biosynthesis and degradation, a Quantitative Trait Locus (QTL) analysis in combination with a candidate gene approach was performed. The diploid mapping population C × E, consisting of 249 individuals, was assayed over two consecutive years, for chipping colour, cold induced sweetening, starch content, starch granule size, starch gelling temperature, starch enthalpy, amylose content and degree of starch phosphorylation. QTLs were observed for all traits, except enthalpy on eight out of the twelve potato chromosomes. Several QTLs were found to be consistent over 2 years. Clustering of co-localizing QTLs was observed on some chromosomes, indicating common genetic factors for the different traits. On chromosome 2, Soluble Starch Synthase 2 mapped on the same position as QTLs for starch phosphorylation, starch gelling temperature and amylose content. α-glucan, water dikinase co-localizes on chromosome 5 together with QTLs for starch phosphorylation and cold induced sweetening. Furthermore, the genes coding for two phosphorylases (StPho1a and StPho2) coincide with QTLs for starch gelling temperature, chipping colour and starch granule size on chromosome 2 and a QTL for starch phosphorylation on chromosome 9, respectively. The results suggest allelic variation acting on the genetics of the different traits.
Laxative Treatment With Polyethylene Glycol Does Not Affect Lipid Absorption in Rats
Authors: van der Wulp Mariëtte Y.M. , Cuperus Frans J.C. , Stellaard Frans , van Dijk Theo H. , Dekker Jan , Rings Edmond H.H.M. , Groen Albert K. , Verkade Henkjan J. 
Published: March 2012

ABSTRACTObjectives:Polyethylene glycol (PEG) is a frequently used laxative agent. It is unknown, however, whether PEG affects the absorptive capacity of the intestine. Reduced lipid (dietary fat and cholesterol) absorption induced by long‐term PEG treatment could negatively affect growth in children. We tested whether PEG accelerates gastrointestinal transit and alters lipid absorption and plasma lipid levels.Methods:Wistar rats were administered drinking water with or without PEG (7%) for 2 weeks. We studied whole gut transit time by recording the first appearance of red feces after intragastric carmine red administration. We measured plasma concentrations of cholesterol and triglycerides, dietary fat absorption by 48‐hour fat balance and by plasma appearance of intragastrically administered stable‐isotope labeled fats, and cholesterol absorption with a dual stable isotope technique.Results:PEG decreased whole gut transit time by 20% (P = 0.028) without causing diarrhea. PEG treatment did neither affects overall dietary fat balance nor fat uptake kinetics, cholesterol absorption, or plasma lipid concentrations.Conclusions:PEG does not affect lipid absorption nor steady‐state plasma lipid levels in rats, although it accelerates the gastrointestinal transit.
Drug Utilization and Off‐label Drug Use in Spanish Pediatric Gastroenterology Outpatients
Authors: Ruíz‐Antorán Belén , Piñeiro Roi , Avendaño Cristina , Román Enriqueta , Cilleruelo María Luz , Gutiérrez‐Junquera Carolina , Centeno Gustavo , Cilleruelo María José 
Published: March 2012

ABSTRACTBackground and Objectives:The clinical use of medicines outside the conditions authorized in their Summary of Product Characteristics (SPC) (off‐label use) is a common practice in pediatrics. The aim of the present study was to describe and quantify the medicines received by children attended in the pediatric gastroenterology department, their off‐label use, and compliance with accepted rules for said use.Methods:A retrospective observational study was performed on all of the patients who had their first consultation in pediatric gastroenterology between January 1 and October 31, 2010. All of the clinical information and medicines prescribed were analyzed. Off‐label use was defined as the use of medicines in indications not included in the officially approved SPC or in ages not included or recommended in the SPC as well as the use of doses, intervals, or administration routes different from those considered in the SPC.Results:A total of 695 patients (52.8% male) were included, 48.2% younger than 2 years. Two‐hundred seven patients (29.8%) received 331 prescriptions. The most commonly used medicines were anti‐H2 and proton pump inhibitors. Of all the prescriptions, 33.2% were considered off‐label, and up to 47.3% of the prescribed patients had at least 1 medicine under off‐label conditions. The medical records contained no documentation on information given to the parents regarding off‐label use.Conclusions:The study found a high percentage of off‐label use of medicines in the Pediatric Gastroenterology outpatient setting, especially in children younger than 2 years. Several initiatives were derived from the present study and implemented in our hospital.
UK building surveying education: the graduates' view
Authors: Hoxley Mike 
Published: March 2012

PurposeMany facilities management professionals originally graduated from a building surveying course. The high referral rate of the professional body pre‐qualification assessment process for building surveyors and other criticisms of graduates have led many to question whether building surveying education is fit for purpose. This paper seeks to address these issues.Design/methodology/approachPrevious research on this subject has concentrated on obtaining the views of course providers and employers. The approach adopted for this study has been an on‐line survey of recent UK building surveying graduates. A 30 per cent response rate resulted in 806 graduates undertaking the survey.FindingsMost graduates had studied a full‐time undergraduate course, three‐quarters had gained some form of placement or work‐experience during their studies, the mode of the year of graduation was 2004 and 65 per cent of the sample work in private practice. The survey reveals concerns over non‐coverage of some of the professional body's pre‐qualification competencies. The most useful subjects studied by graduates were construction technology and building pathology and the least useful was economics. The top two omitted subjects from courses were contract administration and dilapidations – both core areas of work. Skills development was weaker on postgraduate than undergraduate courses.Practical implicationsThose designing HE building surveying courses can refer to the results of this study to ensure that their curricula remain relevant and current to the needs of industry.Originality/valueThis study into building surveying education has been undertaken at a time when many UK universities are reviewing their course provision to ensure that they are well placed to survive the massive upheaval imposed by government funding cuts and changes in student finance. This study with its large sample size will be of assistance to those reviewing building surveying courses.
Facilities management: lost, or regained?
Authors: Drion Bernard , Melissen Frans , Wood Roy 
Published: March 2012

PurposeThe objective of this paper is to examine the continuing debate over the nature, scope and definition of facilities management and the implications of FM practice in the field of outsourcing for the development of the field and the profession.Design/methodology/approachThe paper offers both a conceptual review of key issues in the definition of facilities management and a critique of these definitions in the context of the popular identity of facilities management as a means of generating cost savings through outsourcing.FindingsThe discussion asserts that, perhaps contrary to the many published doubts expressed over the possibility of achieving consensus on the scope of facilities management, an emerging and broadly consensual model of facilities management can be discerned. This model, it is suggested, is inhibited from further development primarily because of a lack of leadership in the professional and academic communities together with a preoccupation by necessity of the FM profession with operational imperatives.Originality/valueThe paper, through synthesis and critique, offers a variant perspective on the debate about the nature of facilities management.
Do switching costs really provide a first‐mover advantage?
Authors: Molina‐Castillo Francisco‐Jose , Rodriguez‐Escudero Ana‐Isabel , Munuera‐Aleman Jose‐Luis 
Published: March 2012

PurposeThe purpose of this article is to present a model that compares the switching costs that consumers face when they buy pioneering and follower products.Design/methodology/approachA study of 255 new products indicates that switching costs are actually higher when switching from an existing product to a pioneering product.FindingsThe study shows that people who buy a pioneering product may also face switching costs, if the pioneering product is launched in an existing category where consumers are already familiar with similar products.Research limitations/implicationsThe results help to reinforce the view that first movers have advantages and demonstrate that switching costs do not lead to a higher level of consumer retention.Practical implicationsThis study provides interesting managerial implications on how to launch new products more effectively when they suffer from switching costs..Originality/valueResearchers commonly view switching costs as a barrier to market entry that protects enterprises that launch pioneering products and gives them a competitive advantage over those that launch follower products. The underlying idea is that people only experience switching costs when they change to a different follower product, rather than when they purchase a pioneering product instead of the product that they usually purchase.
Inequality aversion, social discount, and time discount rates
Authors: Ida Takanori , Ogawa Kazuhito 
Published: March 2012

PurposeThis paper aims to conduct a hypothetical dictator game with social distance and time delays using conjoint analysis.Design/methodology/approachResponses from 1,347 Japanese adults are collected through an online survey, and their responses are analyzed using a random parameter logit model.FindingsThe paper finds that social preference for the present income of a stranger equals social preference for the income of an acquaintance 140 days later, of a close friend 224 days later, and of a family member 255 days later.Originality/valueThe paper simultaneously estimates social preference parameters, including the inequality aversion rate, the social discount rate, and the time discount rate.
Advancing entrepreneurial marketing
Authors: Sullivan Mort Gillian , Weerawardena Jay , Liesch Peter 
Published: March 2012

PurposeThe purpose of this paper is to advance the domain of entrepreneurial marketing (EM) responding to the challenge to EM scholars to more fully develop EM as a school of marketing thought. The paper seeks to argue that the context of the born global firm is an appropriate and novel context in which to undertake this research.Design/methodology/approachThe need to examine the processes of EM justifies the use of case study method. In total, nine born global firms, located in the three most populous states in Australia: Queensland, New South Wales and Victoria, were selected for study. The firms were drawn from hi‐tech and low‐tech industry sectors, and included online businesses, in an attempt to capture maximum theoretical variation.FindingsThe analysis identifies the four key strategies of entrepreneurial marketing as comprising opportunity creation, customer intimacy‐based innovative products, resource enhancement and importantly, legitimacy. These core strategies of EM are identified by mapping to enhanced performance.Research limitations/implicationsSome may consider the born global context a limitation. Therefore, it is suggested that further empirical research could be undertaken on other cohorts of small to medium‐sized enterprises (SMEs), such as service SMEs, to provide increased insight into the strategies and practices in the domain of EM. Quantitative research to operationalize the EM construct and model theoretical relationships is also suggested.Originality/valueThis paper advances the domain of EM into a new phase by empirically identifying four core strategies of EM. It finds that EM contributes to the achievement of superior performance in small firms through purposeful strategy based an effectuation approach.
Using popular movies in teaching cross‐cultural management
Authors: Pandey Satish 
Published: March 2012

PurposeThe present study aims to understand context and dynamics of cognitive learning of students as an outcome of the usage of popular movies as a learning tool in the management classroom and specifically in the context of a course on cross‐cultural management issues.Design/methodology/approachThis is an exploratory study based on qualitative analysis of reflection notes of 14 students who participated in an elective course on “managing cross‐cultural issues (MCCI)” in the second year of their MBA programme. Students were asked to submit reflection notes focused on classroom learning as an outcome of the course MCCI with specific reference to used movies Outsourced and My Big Fat Greek Wedding. Students' reactions in their reflection notes were analyzed through qualitative content analysis.FindingsThe findings of this study reveal that students found selected movies very relevant and effective in learning cross‐cultural theories, issues and developing cross‐cultural competence. They also enjoyed movies as learning experience in the classroom. Both instructor's observations and students' reactions regarding the effectiveness of movies as classroom learning tool are very positive.Practical implicationsPopular movies, if appropriately selected and included in cross‐cultural training programmes for expatriate managers, immigrant workers and managers who travel to different countries, could be very useful as a learning tool for developing multicultural perspective and cross‐cultural competence.Originality/valueThis paper could be very useful to academicians and researchers who want to use popular movies as an instructional or research tool for exploring the psychodynamics of classroom learning in management and social sciences courses or professional training programmes focused on cross‐cultural management skills, global leadership skills, diversity management.
Enhancing the teaching‐learning process: a knowledge management approach
Authors: Bhusry Mamta , Ranjan Jayanthi 
Published: March 2012

PurposeThe purpose of this paper is to emphasize the need for knowledge management (KM) in the teaching‐learning process in technical educational institutions (TEIs) in India, and to assert the impact of information technology (IT) based KM intervention in the teaching‐learning process.Design/methodology/approachThe approach of the paper is basically conceptual and descriptive. The paper studies the role of KM in facilitating knowledge sharing among stakeholders in TEIs in India and elaborates on the need for knowledge management in the teaching‐learning process. A KM framework for enhancement of knowledge sharing by the use of shared intellectual repositories (IRs) is proposed for the enhancement of teaching and learning in technical educational institutions in India.FindingsThe authors value the impact that KM can have in enhancing the quality of teaching and learning in TEIs, and underscore the need for credible research into the benefits and challenges that the implementation of IT‐based KM intervention will provide.Research limitations/implicationsThe paper emphasizes the urgent need for improvement in quality of education in TEIs in India using the tools and processes of knowledge management. The importance of the proposed framework lies in augmenting the teaching‐learning process, improving productivity, enhancing communication among academia, researchers and professionals, enhancing student perception and understanding of subjects, and providing a common platform for pooling individual knowledge towards a common knowledge base.Originality/valueThe paper helps academicians to understand the importance of IT‐supported KM concepts, tools and practices towards quality teaching and learning. It provides useful inputs to TEIs, which must recognize that implementation of KM will influence knowledge sharing among faculty, researchers, practitioners, experts, professionals and students and enable quality education for students. Furthermore, the development of an IT‐based KM system will facilitate the promotion of institutional value in the competitive academic society. However there exists the need to evaluate the proposed framework in TEIs in India.
Forced convection in a wavy channel with discrete heat sources
Authors: Alawadhi Esam M. , Bourisliy Raed I. 
Published: March 2012

PurposeThis paper presents the heat transfer enhancement from discrete heat sources using a wavy channel.Design/methodology/approachThe finite element method is utilized to solve the hydrodynamic/thermal problem. The considered geometry consists of a channel formed by two wavy plates with six discrete heat sources placed on upper and lower walls. The global objective is to maximize the heat transfer from the heat sources. The wavy channel enhances heat transfer from the heat sources through the modification of the flow pattern in the channel. The effects of the Reynolds number, Prandtl number, waviness of the wavy wall, and the location of the heat sources on the thermal characteristics of the flow are investigated.FindingsResults indicate that the wavy channel significantly enhances the heat flow out of the heat sources, with heat sources located at the minimum channel cross sections having the best performance. The Nusselt number increases with an increase in Reynolds number and waviness of the wavy channel. The higher Prandtl number has a positive effect on the heat flow out of the heat sources. The heat transfer enhancement can reaches as high as 120 percent for high Reynolds numbers and waviness of the channel.Originality/valueThe combination of wavy plates and optimum placement of heat sources can lead to better, less expensive thermal management of heat sources in electronic devices.
Making learning and Web 2.0 technologies work for higher learning institutions in Africa
Authors: Lwoga Edda 
Published: March 2012

PurposeThis paper seeks to assess the extent to which learning and Web 2.0 technologies are utilised to support learning and teaching in Africa's higher learning institutions, with a specific focus on Tanzania's public universities.Design/methodology/approachA combination of content analysis and semi‐structured interviews was used to collect data. Semi‐structured interviews were conducted with ICT personnel from six of the eight public universities in Tanzania in 2011.FindingsThe study found that the adoption of e‐learning and Web 2.0 technologies is still in its infancy in Tanzania's public universities. However, there was much enthusiasm amongst respondents for developing the potential of e‐learning and Web 2.0 tools in their universities.Practical implicationsThe study seeks to promote academic inquiry about the need for innovative Web 2.0 technologies in learning and teaching and the adoption of these emerging technologies in Africa's higher learning institutions.Originality/valueThe study provides empirical findings on the use of e‐learning and Web 2.0 for higher education, specifically in the Tanzanian context. The study provides a basis for further research on the use of Web 2.0 technologies in higher education.
Knowledge sharing and educational technology acceptance in online academic communities of practice
Authors: Nistor Nicolae , Baltes Beate , Schustek Monika 
Published: March 2012

PurposeOnline programs rely on the use of educational technology for knowledge sharing in academic virtual communities of practice (vCoPs). This poses the question as to which factors influence technology acceptance. Previous research has investigated the inter‐relationship between educational technology acceptance (ETA) and the vCoP context insufficiently. Therefore, the paper at hand aims to propose a conceptual model of ETA in the vCoP frame.Design/methodology/approachTo validate the proposed model, a correlation study was conducted in an academic vCoP at a German university. A sample of n=72 faculty members was surveyed regarding attitudes and perceptions towards knowledge sharing in vCoPs.FindingsA regression analysis confirms the expected correlation between technology use intention and corresponding behavior. Further, participation in a vCoP influences technology use intention, and, in turn, is influenced by participants' experience with technology.Research limitations/implicationsAgainst expectations, participants' attitudes towards technology are weakly correlated with most model variables, thus warranting further research.Practical implicationsVirtual mentoring in online universities can be supported relying on central vCoP participants, who may be helpful initiators of knowledge sharing.Originality/valueThe proposed conceptual model enlarges the scientific understanding of technology‐enhanced learning in vCoPs.