bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Multi-Aperture Scintillation Sensor for Dome A, Antarctica
Authors: Chen Hualin , Pei Chong , Yuan Xiangyan 
Published: January 2013

AbstractSite-testing measurements by the Australian group has already shown that Dome C on the Antarctic plateau is one of the best ground-based astronomical sites. Furthermore, Dome A, the Antarctic Kunlun Station, as the highest point on Antarctic inland plateau, where a Chinese Antarctic scientific expedition team first reached in 2005, is widely predicted to be an even better astronomical site by the international astronomical community. Preliminary site-testing carried out by the Center for Antarctic Astronomy (CAS) also confirms Dome A as a potential astronomical site. Multi-aperture scintillation sensors (MASS) can measure the seeing and isoplantic angle, the turbulence profile, etc., which are very important site-testing parameters that we urgently need. The MASS site testing at Dome A is presented here, and includes the method of processing data and the hardware for the extreme conditions of Dome A, Antarctica.
The self-perpetuation of EU constitutionalism in the area of free movement of persons: Virtuous or vicious cycle?
Authors: WIESBROCK ANJA 
Published: January 2013

AbstractThis paper analyses the mutual influence and self-perpetuating cycle of legitimacy of EU legal scholars and the Court of Justice of the European Union (CJEU) in expanding and broadening the free movement rights of Union citizens and their family members. It is argued that legal scholars have played a dual role in promoting the constitutional paradigm of an ever-expanding scope of directly enforceable residence and movement rights in the EU. First, by presenting the expansion of free movement rights as an inevitable outcome of the EU constitutional order based on directly enforceable individual rights, scholars have played a significant role in legitimizing the jurisprudence of the Court in the face of initial resistance from the member states. Second, legal scholars have been an important source for the Court of Justice in developing its case law in this area. The Advocates General in their opinions have drawn on an expanding field of scholarship presenting the expansion of free movement rights as an inherent feature of the EU as a constitutional legal order. Spurred by the objective of turning the EU into more than an internal market, the opinions of the Advocates General have mostly been followed by the Court. Legal scholars have thus served not only as a legitimizing force, but also as a source of inspiration for the perceived constitutionalization of free movement rights in the EU.
BioGranat-IG: a network analysis tool to suggest mechanisms of genetic heterogeneity from exome-sequencing data
Authors: Dand Nick , Sprengel Frauke , Ahlers Volker , Schlitt Thomas 
Published: January 2013

Abstract
Motivation: Recent exome-sequencing studies have successfully identified disease-causing sequence variants for several rare monogenic diseases by examining variants common to a group of patients. However, the current data analysis strategies are only insufficiently able to deal with confounding factors such as genetic heterogeneity, incomplete penetrance, individuals lacking data and involvement of several genes.
Results: We introduce BioGranat-IG, an analysis strategy that incorporates the information contained in biological networks to the analysis of exome-sequencing data. To identify genes that may have a disease-causing role, we label all nodes of the network according to the individuals that are carrying a sequence variant and subsequently identify small subnetworks linked to all or most individuals. Using simulated exome-sequencing data, we demonstrate that BioGranat-IG is able to recover the genes responsible for two diseases known to be caused by variants in an underlying complex. We also examine the performance of BioGranat-IG under various conditions likely to be faced by the user, and show that its network-based approach is more powerful than a set-cover-based approach.
Availability: We implemented our methods in Java as BioGranat-IG, a bundle within our BioGranat graph analysis and visualization tool (www.biogranat.org).
Contact: thomas.schlitt@genetics.kcl.ac.uk
Supplementary information: Supplementary data are available at Bioinformatics online.
The dusty aftermath of the V1309 Sco binary merger
Authors: Nicholls C. P. , Melis C. , Soszyński I. , Udalski A. , Szymański M. K. , Kubiak M. , Pietrzyński G. , Poleski R. , Ulaczyk K. , Wyrzykowski Ł. , Kozłowski S. , Pietrukowicz P. 
Published: January 2013

Abstract
We present mid-IR photometry and spectra of the merged binary V1309 Sco taken between 18 and 23 months after outburst. Strong mid-IR emission and a solid-state absorption feature indicate the presence of a significant amount of dust in the circumstellar environment. The absence of detectable mid-IR emission before the outburst suggests that this dust was produced in the eruptive merger event.
Model fits to the solid-state absorption feature constrain the constituent species and column density of the dust around V1309 Sco. We find that the absorption feature can be reproduced by large (3 μm) amorphous pyroxene grains at a temperature of 800 K. This grain size, if confirmed with longer wavelength spectroscopy and modelling, would be suggestive of dust processing in the circumstellar environment. The data in hand do not allow us to discriminate between disc or shell configurations for the dusty material.
HDA18 Affects Cell Fate inArabidopsisRoot Epidermis via Histone Acetylation at Four Kinase Genes
Authors: Liu Cui , Li Lin-Chen , Chen Wen-Qian , Chen Xian , Xu Zhi-Hong , Bai Shu-Nong 
Published: January 2013

AbstractThe differentiation of hair (H) and non-hair (N) cells in the Arabidopsis thaliana root epidermis is dependent on positional relationships with underlying cortical cells. We previously found that histone acetylation relays positional information and that a mutant altered in the histone deacetylase gene family member HISTONE DEACETYLASE 18 (HDA18) exhibits altered H and N epidermal cell patterning. Here, we report that HDA18 has in vitro histone deacetylase activity and that both mutation and overexpression of HDA18 led to cells at the N position having H fate. The HDA18 protein physically interacted with histones related to a specific group of kinase genes, which are demonstrated in this study to be components of a positional information relay system. Both down- and upregulation of HDA18 increased transcription of the targeted kinase genes. Interestingly, the acetylation levels of histone 3 lysine 9 (H3K9), histone 3 lysine 14 (H3K14) and histone 3 lysine 18 (H3K18) at the kinase genes were differentially affected by down- or upregulation of HDA18, which explains why the transcription levels of the four HDA18-target kinase genes increased in all lines with altered HDA18 expression. Our results reveal the surprisingly complex mechanism by which HDA18 affects cellular patterning in Arabidopsis root epidermis.
An identification of a model for digital library critical success factors
Authors: Lagzian Fatemeh , Abrizah Abdullah , Chin Wee Mee 
Published: January 2013

PurposeA significant amount of digital repository research and development activity is taking place worldwide, which calls for the investigation of issues identified as critical to the development, management and sustainability of these repositories. The purpose of this paper is to establish a comprehensive set of critical success factors (CSFs) that would enable successful digital libraries implementation.Design/methodology/approachThe design of this study is exploratory in nature due to lack of previous research about CSFs in digital library projects. The paper builds the research framework to find CSFs for digital libraries initiatives by collecting possible factors from literature on CSFs of information systems; and feedback from ten experts who have had experience in digital library research and development as well as implementation, through e‐mail interviews. Six dimensions in the enterprise architecture framework (namely motivation, resource, people, process, location and time) needed to create the environment in which digital delivery can be effective and sustained, are mapped with the CSF established from the literature.FindingsThe results revealed six dimensions of CSFs and 36 potential success factor statements contributed by the study participants. Based on these findings, this paper postulates that successful deployment of a digital library implementation may depend on this set of success factors. The identification of these factors has important implications on digital library development.Originality/valueThere has been no comprehensive study on the success factors of digital libraries in the library and information science context, as such, no investigation of the factors in some real‐life contexts of digital library activities. It may help digital library start‐ups to understand what sources and services they need to develop to make their applications successful in an already very populated network. Both researchers and practitioners in the field of digital libraries may value the novelty and results of this study.
Evaluation of e‐learning course, Information Literacy, for medical students
Authors: Kratochvíl Jirí 
Published: January 2013

PurposeThe main purpose of this article is to describe and to evaluate the results of evaluation of the e‐learning course, Information Literacy, which is taught by the librarians at the Faculty of Medicine, Masaryk University. In the article the results are discussed to inform about the librarians' experience with tutoring the course.Design/methodology/approachThe survey covers the medical students who enrolled on the course between autumn 2008 and autumn 2010. The students were requested to fill the questionnaire designed in Google Documents and based on the quantitative method, including a five‐point Likert scale combined with closed and open ended questions.FindingsResults show the medical students are satisfied with the e‐learning course, Information Literacy, because of time and space flexibility, studying at their own pace and online interactive tutorials. More than half the students found the gradual releasing of the study materials and the tasks as the main motivation for continous learning. Most of the students were satisfied with the taught topics like methodology of searching in the databases Web of Science, Scopus and medical databeses, using EndNoteWeb and citation style ISO 690. Most of the tasks like searching in the online databases, working with EndNoteWeb or finding the impact factor of a journal were evaluated as beneficial.Practical implicationsThe results have suggested several important revisions to the e‐learning course, Information Literacy. The librarians have decided to create the interactive tutorials explaining the importance of the topics according to the students' needs in the future and writing a scientific paper and remove the parts of tutorials describing the library terminology and catalogues. Besides this decision, two new tasks – verifying online access to the full text of journals and finding signs of plagiarism in a short text – have been added since spring 2011. Finally the librarians will prepare some printed material supporting the course and improve the publicity of their e‐learning course among the teachers who can recommend the course to their students.Originality/valueThe article presents one of the first experiences with the e‐learning course Information Literacy for medical students in the Czech Republic. The results and its discussion can help other librarians who are going to prepare a similar e‐learning course in planning the conception of their course.
Screenness and organizing: sociomaterial practices in mediated worlds
Authors: Styhre Alexander 
Published: January 2013

PurposeIn the contemporary society, new digital media play a key role in organizing both companies and the public sector, as well as public transportation systems in metropolitan areas and similar technological macro‐systems. Humans are encountering digital media through the screen but the underlying mechanisms and structure of the screen, their screenness, remain relatively poorly explored in organization theory. Literature on new media, visual studies, and studies of financial trading is used with the aim of presenting a case in favour of a more integrated understanding of the role of screens in organizing, unearthing screens and portraying them not as insignificant elements of a dull infrastructure but as key components in the day‐to‐day organizing of firms and social space.Design/methodology/approachThe paper draws on secondary literature addressing the role of screens and screenness in everyday organizing.FindingsDrawing on a study of financial trading, screens are envisaged as the surfaces on which the financial traders' life‐worlds present themselves and are enacted, rendering the abstract flows of capital and innumerable financial transactions meaningful and tangible through the use of certain aesthetics and geometries of representation.Originality/valueThe conceptual paper combines literature from a number of disciplines and theoretical perspectives.
Young people's perspectives on health: empowerment, or risk?
Authors: Spencer Grace 
Published: January 2013

PurposeResearch to date has identified young people's perspectives on a number of health‐related topics such as smoking, alcohol, sexual health, physical activity and healthy eating. Whilst this body of research draws important attention towards young people's views on topical health concerns, it arguably remains located within a pre‐defined agenda; thereby marginalising young people's own, and potentially different, frames of reference when discussing health. In light of this omission, the aim of this paper is to examine young people's own understandings of health in line with their own frames of reference.Design/methodology/approachData were collected from 55 young people aged 15‐16 years through group discussions, individual interviews and observational data in a school and surrounding community settings. Key themes were analysed for their implications for “emic” conceptualisations of health. Young people's perspectives were further compared with accounts given by professionals.FindingsTwo key themes emerged from young people's accounts: being happy and having fun. Young people's meanings of being happy highlighted the relational components of developing a positive self‐belief, pointing to a number of socially located prerequisites for promoting their health. Discussions of having fun were understood as potentially liberating, resistive and subversive, but which exist in some tension with adults’ discourses of risk and risk‐taking.Originality/valueExamining young people's accounts points to the possibility of a more positive discourse on health – opening up new opportunities and insights for health promotion informed by concepts of empowerment.
Design and manufacture methods of rapid prototyping wind‐tunnel models based on photopolymer‐resin
Authors: Dang‐guo Yang , Yan Sun , Zheng‐yu Zhang , Chao Wang , Wei‐jun Zhu 
Published: January 2013

PurposeThe purpose of this paper is to present a novel method to design and manufacture rapid prototyping (RP) lightweight photopolymer‐resin models for wind‐tunnel tests. This method can ensure the structural configuration similarity considering model deformation under aerodynamic loads.Design/methodology/approachPhotopolymer‐resin based on RP technique was used to fabricate DLR‐F4 models. Testing in a subsonic and transonic wind tunnel was carried out and the test results were compared to analyze performance predictions.FindingsRP photopolymer‐resin wind‐tunnel models fabricated by the design methods yielded satisfactory aerodynamic performance. The methods can decrease the model's weight and prevent resonance occurrence among the models, wind‐tunnel, and support system, shorten the processing period, and lead to decrease in manufacturing period and cost.Research limitations/implicationsStiffness shortage of the thin components, such as wing tip, often leads to deformation occurrence under aerodynamic loads in transonic wind‐tunnel tests, which has significant influence on aerodynamic characteristics of the test models. Therefore, model deformation should be taken into account in the design process.Originality/valueThis design and manufacture method, aerodynamic and structural combination design and structural optimization, can obtain RP lightweight photopolymer‐resin wind‐tunnel models for satisfactory aerodynamic performance, which makes RP techniques more practical for manufacturing transonic wind‐tunnel test models, considering deformation induced by aerodynamic forces such as lift force. The methods also present an inexpensive way to test and evaluate preliminary aircraft designs, in both academia and industry.
Effect of the Q‐switch parameters on the sintering behavior of laser micro sintering Cu‐based metal powder using Q‐switched Nd‐YAG laser
Authors: Zhu Haihong , Ke Linda , Lei Wenjuan , Dai Cheng , Chen Baijin 
Published: January 2013

PurposeThe purpose of this paper is to investigate the effect of the Q‐switching parameters on the sintering behavior of laser micro sintering Cu‐based metal powder, using Q‐switched 1064 nm Nd‐YAG laser.Design/methodology/approachAn experimental study has been performed. Metal powder mixture with Cu and Cu‐P alloy powders has been utilized. Q‐switching duration of 15 μs∼25 μs, rate of 25 kHz∼45 kHz have been used.FindingsThe results show that as the Q‐switching rate and duration increases, the peak laser power decreases and the densification enhances. However, an optimal peak laser power exists and if the peak laser power is too low, the density of the sample is also low. The densification regime of laser micro‐sintering is not only caused by the liquid phase filling the pores, but is also caused by the Cu powder migrating and by coalescence, e.g. including initial stage and intermediate stage of the traditional furnace liquid phase sintering. However, the degree of these stages depends on the peak power and input laser energy.Originality/valueThe effect of the Q‐switching parameters on sintering behavior of laser micro sintering Cu‐based metal powder using Q‐switched 1064 nm Nd‐YAG laser has been obtained. It is found that the densification behavior is Q‐switching parameters dependent, although the average laser power is same. The densification regime of laser micro‐sintering includes initial stage and intermediate stage of the traditional furnace liquid phase sintering, but the degree is Q‐switching parameters dependent.
Exploring boundary attitude
Authors: Bates Peter , Lymbery Mark , Emerson Eric 
Published: January 2013

PurposeThere have been increased concerns about disciplinary procedures in relation to adult safeguarding. The purpose of this paper is to argue that the personal “boundary attitude” of workers is a strong component of their response to issues that have a safeguarding dimension.Design/methodology/approachThis study reports an analysis of questionnaire responses and data generated from interactive training events.FindingsThe data suggest most workers adopt a personal stance or “boundary attitude” that drives their response to many of the diverse circumstances they face at the interface of their professional and personal life.Research limitations/implicationsThe particular profession, stage in career development or work environment may affect staff responses and this needs further exploration.Practical implicationsThere are implications for how services identify the most effective workers and their least effective colleagues, as well as for staff selection and training. Improving our understanding of boundary attitude will help to protect vulnerable people from abuse whilst supporting them to have a full life.Social implicationsA better understanding of whether staff who maintain rigid boundaries deliver better outcomes than their colleagues who exercise substantial flexibility will help in recruitment, supervision and safeguarding activities.Originality/valueThe paper explores an under‐recognised issue in adult safeguarding, the personal “boundary attitudes” of staff, and their impact on judgements that affect a range of professional decisions they take.
Assessment of competitive tendering methods of procuring educational building projects in Nigeria
Authors: Adedokun O.A. , Ibironke O.T. , Babatunde S.O. 
Published: January 2013

PurposeThe purpose of this paper is to assess educational building projects with a view to determining the level of utilization of competitive tendering methods, factors influencing their choice and predisposition to risk factors, in order to ensure effective construction project delivery.Design/methodology/approachThe paper assessed the level of utilization of competitive tendering methods, the factors influencing their choice and finally the predisposition of each of the methods to risk factors, adopting survey method which involved primary data, obtained by using multiple‐choice questionnaire administered to the respondents (architects, quantity surveyors, builders, structural engineers, civil engineers, mechanical and electrical engineers).FindingsIt was found that the usage of open competitive tendering methods outweighed selective tendering method of procurement as a result of accountability and price competition involved, which made it predisposed to not only financial risk factors, but also political and logistics factors.Research limitations/implicationsMultiple‐choice questionnaire administered to the respondents (architects, quantity surveyors, builders, structural engineers, civil engineers, mechanical and electrical engineers) was limited to selected institutions in the southwestern zone of Nigeria.Practical implicationsThe most widely adopted method (open competitive tendering method) suffers from risk factors such as selective but high premium being placed on financial and logistic risk factors in order to achieve hitch‐free construction project delivery. These measures will help the stakeholders in assessing degrees of project complexity and better manage the potential risks that might be induced to different levels of competitive tendering methods of project procurement in relation to educational building projects.Originality/valueThis empirical investigation provides strong evidence on the procurement of educational building projects in response to due process policy. The findings provided insightful perspectives to define and understand project complexity. For stakeholders, understanding and addressing the complexity help to improve project planning and implementation.