bluuebunny/crossref_metadata_2025_split huggingface dataset:
Complex satellite systems: a general model of formation from rings
Authors: Crida Aurélien , Charnoz Sébastien 
Published: January 2015

Summary of the AbstractWe present our model of formation of regular satellites by the spreading of a cold debris disk beyond the Roche radius. By numerical simulations and analytical calculations, we show that this process explains the peculiar properties of Saturn's small and mid-sized moons, in particular their mass - distance distribution. This process seems to also account for the structures of the satellite systems of Uranus, Neptune, and the Earth, suggesting that they used to have massive rings.
On the Lagrange libration points of the perturbed Earth-Moon System
Authors: Salnikova Tatiana V. , Stepanov Sergey Ya. 
Published: January 2015

AbstractIn this work we discuss the elusive Kordylewski clouds – dust matter in the neighborhood of the Lagrange libration points L4, L5 of the Earth-Moon system. On the base of restricted planar circular four body problem we get some proof for possibility of existence of four such clouds and some rule to predict the optimal moments of time for their observation.
Rapid planetesimal formation in the inner protoplanetary disk
Authors: Drążkowska Joanna , Windmark Fredrik , Okuzumi Satoshi 
Published: January 2015

AbstractGrowth barriers, including the bouncing, fragmentation and radial drift problems, are still a big issue in planetesimal and thus planet formation theory. We present a new mechanism for very rapid planetesimal formation by sweep-up growth. Planetesimal formation is extremely fast in the inner protoplanetary disk where the growth rate exceeds the radial drift rate, leading to local planetesimal formation and pile-up inside of 1 AU. This scenario is very appealing particularly in the context of explaining the low mass of Mars, as well as the formation of recently discovered multi-transiting systems with tightly-packed inner planets.
Parental Communication and Life Satisfaction in Adolescence
Authors: Cava María-Jesús , Buelga Sofía , Musitu Gonzalo 
Published: January 2015

AbstractThis study aims to analyze the influence of communication with the mother and father on adolescents’ life satisfaction, as well as possible indirect effects through self-esteem, feelings of loneliness, and perceived classroom environment. These relationships, and possible gender differences, were analyzed in a sample of 1,795 adolescents (52% male, 48% female) aged 11 to 18 years-old (M = 14.2, SD = 1.68), using structural equation modeling. Results indicate a direct effect of communication-mother (girls: β = .19, p < .001; boys: β = .16, p < .05) and communication-father (girls: β = .22, p < .001; boys: β = .17, p < .05) on adolescent life satisfaction; and also indirect effects through self-esteem (communication-mother: girls, β = .18, p < .01; boys: β = .19, p < .05; communication-father: girls: β = .28, p < .001; boys: β = .27, p < .01) and feelings of loneliness (communication-mother: girls: β = -.19, p < .01; boys: β = -.21, p < .05; communication-father: girls: β = -.31, p < .001; boys: β = -.20, p < .01). The results and implications of this study are discussed.
Ultra-low percolation threshold in ferrite-metal cofired ceramics brings both high permeability and high permittivity
Authors: Wang Liang , Bai Yang , Lu Xuefei , Cao Jiang-Li , Qiao Li-Jie 
Published: January 2015

AbstractHigh permeability and high permittivity are hard to be achieved simultaneously, either in single-phased materials or in composite materials, such as ferrite-ferroelectric ceramic composites and ferrite-metal percolative composites. In this work, ultra-low percolation threshold is achieved in NiZnCu ferrite-Ag cofired ceramics, which endows the composite with both high permeability and high permittivity by minimizing the negative effect of nonmagnetic conductive fillers on magnetic properties. The percolation threshold is controlled by the temperature matching between ferrite densification and Ag melting. A thin and long percolative net forms between large ferrite grains under a proper cofiring process, which brings a low percolation threshold of 1.21vol%, more than one order of magnitude lower than the theoretical value of 16vol%. Near the ultra-low threshold, the composite exhibits a high permeability of 585 and a high permittivity of 78.
Long-range Cooper pair splitter with high entanglement production rate
Authors: Chen Wei , Shi D. N. , Xing D. Y. 
Published: January 2015

AbstractCooper pairs in the superconductor are a natural source of spin entanglement. The existing proposals of the Cooper pair splitter can only realize a low efficiency of entanglement production and its size is constrained by the superconducting coherence length. Here we show that a long-range Cooper pair splitter can be implemented in a normal metal-superconductor-normal metal (NSN) junction by driving a supercurrent in the S. The supercurrent results in a band gap modification of the S, which significantly enhances the crossed Andreev reflection (CAR) of the NSN junction and simultaneously quenches its elastic cotunneling. Therefore, a high entanglement production rate close to its saturation value can be achieved by the inverse CAR. Interestingly, in addition to the conventional entangled electron states between opposite energy levels, novel entangled states with equal energy can also be induced in our proposal.
Giant ankyrin-G: A critical innovation in vertebrate evolution of fast and integrated neuronal signaling
Authors: Jenkins Paul M. , Kim Namsoo , Jones Steven L. , Tseng Wei Chou , Svitkina Tatyana M. , Yin Henry H. , Bennett Vann 
Published: January 2015

Significance
Excitable axonal membrane microdomains are unique features of vertebrate nervous systems that are required for normal neuronal signaling and are involved in human neurological disorders. Ankyrin-G is a critical adaptor protein that acquired a giant exon early in vertebrate evolution, resulting in a new nervous system-specific polypeptide that is a master organizer of axonal excitable membranes. Giant ankyrin-G–deficient mice live to weaning and provide a rationale for survival of humans with severe cognitive dysfunction bearing a truncating mutation in the giant exon. The giant exon of ankyrin-G thus was a transformative innovation in evolution of the vertebrate nervous system that now is a potential target in neurodevelopmental disorders.
Trigger loop folding determines transcription rate of
Escherichia coli’s
RNA polymerase
Authors: Mejia Yara X. , Nudler Evgeny , Bustamante Carlos 
Published: January 2015

Significance
RNA polymerase is a vital enzyme responsible for the first step in gene expression. Despite extensive studies, fundamental questions about its kinetic and mechanistic properties still remain unanswered. The trigger loop is a conserved domain within RNA polymerase that has been linked to the enzyme’s average elongation velocity and pausing behavior. In this study, we use optical tweezers, a single molecule technique, to analyze the behavior of two mutant polymerases with a single point mutation in their trigger loop domain and compare it to the WT. By looking at individual enzymes we are able to separate continuous elongation from pausing and create a kinetic and mechanistic model in which trigger loop folding-unfolding dynamics controls transcription elongation.
The ultimate fate of cosmic rays from galaxies and their role in the intergalactic medium
Authors: Lacki Brian C. 
Published: January 2015

Abstract
The majority of cosmic rays (CRs) generated by star-forming galaxies escape them and enter the intergalactic medium (IGM). Galactic wind termination shocks might also accelerate CRs. I show that the mean pressure of these CRs can reach to within an order of magnitude of the mean Lyman α forest thermal pressure. At z ≳ 1, their pressure may have even been dominant. I also demonstrate that, whichever IGM phase the CRs reside in, they contribute significantly to its pressure if its temperature is ∼104 K, as long as pionic and Coulomb losses are negligible. Where CRs end up depends on the structure and strength of intergalactic magnetic fields. I argue that CRs end up at least 30 kpc from their progenitor galaxies. CRs may self-confine in the IGM to the sound speed, generating ≳ 10− 13 G magnetic fields. These considerations imply the existence and importance of a non-thermal IGM.
Alkaline corrosion properties of laser-clad aluminum/titanium coatings
Authors: Aggerbeck Martin , Herbreteau Alexis , Rombouts Marleen , Verwimp Jo , Ambat Rajan 
Published: January 2015

Purpose– The purpose of this paper is to study the use of titanium as a protecting element for aluminum in alkaline conditions.Design/methodology/approach– Aluminum coatings containing up to 20 weight per cent Ti6Al4V were produced using laser cladding and were investigated using light optical microscope, scanning electron microscope – energy-dispersive X-ray spectroscopy and X-Ray Diffraction, together with alkaline exposure tests and potentiodynamic measurements at pH 13.5.Findings– Cladding resulted in a heterogeneous solidification microstructure containing an aluminum matrix with supersaturated titanium (<1 weight per cent), Al3Ti intermetallics and large partially undissolved Ti6Al4V particles. Heat treatment lowered the titanium concentration in the aluminum matrix, changed the shape of the Al3Ti precipitates and increased the degree of dissolution of the Ti6Al4V particles. Corrosion testing showed significant localized dissolution of the aluminum matrix.Research limitations/implications– Increased titanium concentration and heat treatment gave improved alkaline corrosion properties. At pH 13.5, the Al3Ti phases were protected, while the aluminum matrix corroded.Practical implications– For alkaline corrosion-protection of aluminum in the automobile industry, titanium might be useful at pH values below 13.5 or by using other coating techniques.Originality/value– This is the first study testing the use of titanium as a protective element of aluminum in stringent alkaline conditions.
The inhibitive action of chitosan extracted from Archachatina marginata shells on the corrosion of plain carbon steel in acid media
Authors: Okoronkwo A.E. , Olusegun S.J. , Oluwasina O.O. 
Published: January 2015

Purpose– The purpose of this investigation was to study the inhibitive action and adsorption potential of chitosan extracted fromArchachatina marginatasnail shells on the corrosion of plain carbon (mild) steel in acid media.Design/methodology/approach– Weight loss and thermometric methods were used during this investigation. Characterization of the obtained chitosan was accomplished with Fourier transform infrared spectroscopy analysis. The effects of parameters influencing the inhibition process (concentration and temperature) were evaluated, and the sorption isotherms and thermodynamic parameters were derived.Findings– The results obtained showed that chitosan has good inhibition potential with an efficiency of 93.2 per cent. The inhibition efficiency decreased with an increase in temperature but increased with increasing concentration of chitosan. Test results best fitted the Langmuir Isotherm with a correlation coefficient (R2) of 0.999. The thermodynamic parameters studied reveal that the adsorption of chitosan on the surface of mild steel is spontaneous.Originality/value– The paper fulfills an identified need in finding solutions to the problems of metal corrosion using agricultural wastes.
Singapore’s Corrupt Practices Investigation Bureau
Authors: Quah Jon S. T. 
Published: January 2015

Purpose
– The purpose of this paper is to make recommendations to address the four limitations of Singapore’s Corrupt Practices Investigation Bureau (CPIB).

Design/methodology/approach
– The paper begins by attributing Singapore’s reputation as the least corrupt Asian country to the CPIB’s four strengths: its independence from the police; its adequate staffing and funding; its adoption of the total approach to enforcement; and its impartial enforcement of the anti-corruption laws. It then proceeds to identify the CPIB’s limitations and provides four suggestions to address these limitations.

Findings
– The sentencing of Edwin Yeo, a senior CPIB officer, to ten years’ imprisonment on 20 February 2014 for misappropriating US$1.76 million for nearly four years reveals that there were weaknesses in the CPIB’s internal controls and procurement procedures in spite of its effectiveness in curbing corruption. This paper recommends that the CPIB addresses its four limitations by strengthening its internal controls and procurement procedures; enhancing public trust and confidence by further improving its outreach to the population; improving the external oversight of its activities; and developing its in-house research capabilities.

Originality/value
– This paper will be useful for those scholars, policy-makers, and anti-corruption practitioners who are interested in how the CPIB can further enhance its effectiveness even though Singapore is perceived as the least corrupt Asian country.
Routines do matter: role of internal communication in firm-level entrepreneurship
Authors: Zur Agnieszka , Walega Agnieszka 
Published: January 2015

Purpose– The purpose of this paper is to examine the relationship between routine communication practices and corporate entrepreneurship (CE). Drawing upon CE theory and neo-bureaucratic theory, the paper provides insight into all the directions of routine corporate communication and their potential influence on CE.Design/methodology/approach– The paper reviews past and current literature from which hypothesis are developed. Applying the competing values framework and data from 64 Polish manufacturing firms, we used multiple power regression to test the hypothesized relationships.Findings– The study provides evidence for a positive relationship between routine communication practices and CE. The analysis reveals different levels of influence of various communication aspects on CE.Practical implications– Many organizations’ common objective of their redesign efforts is to get rid of the bureaucratic features of the organization. This study suggests that the challenge is to reconfigure certain routine processes and formal requirements within the organization to better suit CE purposes. The paper specifies which routine communication practices can significantly impact CE.Originality/value– Very few prior voices articulate the need of routine practices study in CE research. This paper extends CE theory by providing a new perspective on CE factors and opening new avenues for further research.
Electrical engineering reference resources: a survey from LibGuides
Authors: Osorio Nestor L 
Published: January 2015

Purpose
– The purpose of this survey is to find a significant sample of reference resources for electrical engineering as they are presented in subject-specific LibGuides.

Design/methodology/approach
– The survey is based on a detailed observation and collection of sources designated as Reference Resources in LibGuides, titles found were compiled and organized.

Findings
– The results are substantial; they offered a body of specialized resources, which includes e-book collections, dictionaries, handbooks, encyclopedias and other resources that are important to electrical engineering students and researchers.

Research limitations/implications
– A considerable amount of resources were found; nevertheless, they represent the resources found in a randomly selected sample of LibGuides; therefore, the result is limited to the group of libraries selected.

Practical implications
– The results of this survey are valuable to subject librarians interested in comparing resources with a pool of libraries and to discover titles that can be of interest to their collections.

Originality/value
– The work is original, as this is the first paper publishing the results of a survey of electrical engineering guides.
Attitudes towards participation in business development programmes
Authors: Abbasian Saeid , Yazdanfar Darush 
Published: January 2015

Purpose
– The aim of the study is to investigate whether there are any differences between the attitudes towards participation in development programmes of entrepreneurs who are immigrants and those who are native-born.

Design/methodology/approach
– Several statistical methods, including a binary logistic regression model, were used to analyse a unique, firm-level dataset collected by the Swedish Small Business Forum in October and November 2012. The dataset was based on a questionnaire composed of 60 closed questions that was completed by 531 participants representing 395 companies.

Findings
– Based on the analysis of 15 different attitude variables, the empirical findings are that immigrant managers/owners are more likely to show a positive attitude to participation in development programmes, in terms of nine of those attitude variables, than their native counterparts. Because there are no data about second generation of immigrants in the sample, thus, this category may have had an impact on the results. However, there is no possibility to identify any impact on the results.

Originality/value
– There is no prior research focusing specifically on this question, and to the authors’ knowledge, this study is the first that has attempted to deal with the issue. This study is based on a recent and unique database, and provides new evidence on the relationship between ethnicity and attitude towards participation in development programmes among entrepreneurs. Its context is different from that of prior research.
Psychological needs, engagement, and work intentions
Authors: Shuck Brad , Zigarmi Drea , Owen Jesse 
Published: January 2015

Purpose– The purpose of this study was to empirically examine the utility of self-determination theory (SDT) within the engagement–performance linkage.Design/methodology/approach– Bayesian multi-measurement mediation modeling was used to estimate the relation between SDT, engagement and a proxy measure of performance (e.g. work intentions) (N = 1,586). To best capture the phenomenon of engagement, two measures of engagement (i.e. the Utrecht Work Engagement Scale-9 [UWES-9] and the Job Engagement Scale [JES]) and one measure of harmonious and obsessive passion (HOPS) were utilized. The HOPS was split into separate scales (harmonious and obsessive passion). SDT was operationalized through the Basic Psychological Needs at Work Scale (BPNS). Performance was operationalized through a latent proxy of work intentions.Findings– Results demonstrated that the association between SDT and engagement were positive. Indirect effects between SDT and work intentions were significant for only two of the four measures of engagement (i.e. the UWES and Harmonious Passion). Hypotheses were partially supported.Practical implications– SDT operated as an appropriate framework for capturing the underlying psychological structures of engagement for each of the four measures. In some cases, engagement did not mediate the relation between SDT and performance as expected, highlighting the contextual nature of engagement in both application and measurement.Originality/value– This is one of the first studies to explicitly link a broad well-established psychological theory to engagement. This connection allows researchers to explain the latent processes of engagement that underpin the observed relationships of engagement in practice. Moreover, this is one of only a handful of studies that has used a multi-measurement approach in exploring the engagement–performance linkage and one of the only studies to use Bayesian methodology.
Competence-based analysis of needs in VET teachers and trainers: an Italian experience
Authors: Sartori Riccardo , Tacconi Giuseppe , Caputo Beniamino 
Published: January 2015

Purpose– The aim of the research presented here was to detect, in line with the European Union’s “Education and Training 2020” work program, the training needs of teachers and trainers working in the vocational education and training (VET) system in the Italian Region of Veneto to design courses, experiences and other training programs tailored to meet the needs emerged.Design/methodology/approach– Four focus groups were including VET teachers and trainers were created, two before the construction and two after the online administration of anad hocquestionnaire asking teachers and trainers to rate 67 competencies (43 for teachers, 24 for trainers) on the two dimensions of self-assessment (explicitly defined as the current level of mastery) and importance (explicitly defined as the expected level of mastery). Eight hundred twelve teachers and 166 trainers filled in the questionnaire which also asked them to give suggestions about the courses, experiences and other training programs to be designed.Findings– In questionnaires, teachers and trainers declare they are competent enough to do what they do (self-assessment always obtains higher ratings than importance, except in one competence for teachers), even if in focus groups they say they want to be trained. Accordingly, they express a clear preference for short or very short courses, tailored on their specific needs and for training experiences and programs which are alternative to classroom training.Practical implications– The research is a preliminary action to a European Social Fund project named “Training for trainers”, whose main aim is to give birth to courses, experiences and other training programs, specifically dedicated to VET teachers and trainers, to allow them to develop or refresh the competencies they feel they need for work. Besides, it allowed testing of the benefit of using mixed methods for a competence-based analysis of needs.Originality/value– Data will be used to design courses, experiences and other training programs that really meet the needs of VET teachers and trainers in Veneto to tackle those aspects they consider really important for work in a lifelong learning perspective.
Information technology networked system for student mobility support
Authors: Dębiec Piotr , Materka Andrzej 
Published: January 2015

Purpose
– This paper presents an IT system – Student Connectivity Module (SCM) – designed to support administration of student exchange between universities in different countries, developed under the EU seventh Framework Program. The purpose of this paper is to share the acquired knowledge on existing difficulties in mobility management, propose solutions to those problems, and present results of system validation using its prototype deployed at two universities.

Design/methodology/approach
– Prior to the system design, the needs, plans and expectations concerning the academic IT services were surveyed among 100 universities. On this basis, in close with prospective system users, an original peer-to-peer system was developed using top-down model-driven and agile software development techniques.

Findings
– The barriers to effective interoperation of academic information systems (AIS) were revealed: first, diversity and heterogeneity of campus IT solutions; second, differences in patterns of international student mobility flow; third, diversity in national personal data protection policies; and fourth, lack of standards for e-data exchange. The SCM system overcomes these problems by adopting platform-independent IT solutions, web-services, a network of trusted authority servers, and a novel “quasi-standard” solution for e-data exchange, with the use of home university campus cards to access facilities at host institutions.

Originality/value
– The management of foreign student exchange is a complicated process. It involves students, faculty, administrative staff and external institutions. To the authors knowledge, there is no other comprehensive networked IT system available to facilitate administration of student mobility, make it better controlled, less laborious and faster, in a secure way. The IT solution contributes to overcoming the current barriers to academic mobility within Europe and elsewhere.