bluuebunny/crossref_metadata_2025_split huggingface dataset:
Ecological trap in the buffer zone of a protected area: effects of indirect anthropogenic mortality on the African wild dogLycaon pictus
Authors: van der Meer Esther , Fritz Hervé , Blinston Peter , Rasmussen Gregory S.A. 
Published: August 2013

AbstractBecause of the large home range requirements of wide-ranging carnivores, protected areas are often too small to maintain large populations. Consequently these carnivores regularly move outside protected areas, where they are likely to be exposed to anthropogenic mortality. We used data from 15 packs of radio-collared African wild dogsLycaon pictusto examine the level of anthropogenic mortality African wild dogs experience around Hwange National Park, Zimbabwe, and tried to determine whether the buffer zone outside the Park acts as an ‘ecological trap’. Over time, study packs moved their territories closer to or beyond the Park border. With the movement of territories into the buffer zone outside the Park, African wild dogs experienced an increasing level of anthropogenic mortality. Although larger litters were born outside the Park, mortality exceeded natality. Densities of the African wild dog in the study area were low and territories for given pack sizes were smaller outside the Park. Hence, the movement of packs outside the Park does not appear to be density related and the buffer zone is therefore unlikely to function as a classic sink. Favourable ecological conditions indicate that the buffer zone outside the Park is likely to serve as an ecological trap, with fitness-enhancing factors attracting African wild dogs outside the Park, where they are incapable of perceiving the higher mortality risk associated with mostly indirect anthropogenic causes. As far as we know this is one of the first studies describing an ecological trap for mammals.
Virtual mechanism approach for dual-arm manipulation
Authors: Likar Nejc , Nemec Bojan , Žlajpah Leon 
Published: August 2013

SUMMARYWe propose a novel control approach for cooperative dual-arm manipulation tasks. Our scheme has three typical features: (1) the task performed by two robots is represented as a motion of a virtual mechanism and the task execution is accomplished by controlling the virtual mechanism; (2) the two arms and the task form a joined kinematic chain; (3) the scheme allows a cooperative dual-arm system to perform the task also when robot base is moving. The calculation of the Jacobian matrix of a chained two-arm mechanisms is based on a methodology which is using the Jacobian matrices of particular robot mechanisms and their end-effector positions and orientations. The proposed algorithm for dual-arm manipulation is verified by simulations of two cooperating planar robots and by experiments on a dual-arm robot consisting of two KUKA LWR arms.
Fast and efficient visible trajectories planning for the Dubins UAV model in 3D built-up environments
Authors: Gal Oren , Doytsher Yerach 
Published: August 2013

SUMMARYIn this paper, we study the visible trajectories planning for unmanned aerial vehicles (UAVs) modeled with a Dubins airplane in 3D urban environments. Our method is based on a fast and exact spatial visibility analysis of the 3D visibility problem from a viewpoint in 3D built-up environments. We consider the 3D urban environment buildings modeled as cubes (3D boxes) and present an analytic solution to the visibility problem. Based on an analytic solution, the algorithm computes the exact visible and hidden parts from a viewpoint in the urban environment. We present a local trajectory planner generating the most visible trajectory in a known 3D urban environment model, taking into account the dynamic and kinematic UAV constraints. The planner computes, at each time step, the next UAV's attainable velocities and explores the most visible node, while avoiding buildings as static obstacles in the environments, using the velocity obstacle method. The visibility type of the trajectory can be configured beforehand as visible roofs and surfaces in the environments. We demonstrate our visibility and trajectory planning method in simulations in several 3D urban environments, showing visible trajectory planning capabilities.
Gait motion stabilization tuning approach of biped robot based on augmented reality
Authors: Lin J. , Li Z. M. , Chang J. 
Published: August 2013

SUMMARYZero moment point (ZMP) is the most popular concept that is applied to stabilize the gait motion of a biped robot. This paper utilizes ZMP with the augmented-reality (AR) method to improve the stability of gait motion of a biped robot. The 3ds Max computer software package is used to build a virtual robot. Under an achieved joint angle data of solid robot to produce an animation of the robot's trajectory, the joint angle data are transmitted to the virtual robot to analyze the offset of the trunk. Furthermore, this investigation adopts AR to allow the user to make direct comparisons between the solid and virtual robot before and after the gait motion is corrected. The animated trajectories of the virtual robot are compared and the relevant data provide feedback to the solid robot to adjust the joint angle and further correct its posture. The experimental results reveal that the proposed scheme can improve gait motion, even when the biped robot is affected by an unexpected loading disturbance. As well as improving the stability of gait motion of a biped robot, the results of this study can also be used to teach the application of the proposed method in a robotics class.
Acquisition outcomes across domains in adult simultaneous bilinguals with French as weaker and stronger language
Authors: KUPISCH TANJA , LEIN TATJANA , BARTON DAGMAR , SCHRÖDER DAWN JUDITH , STANGEN ILSE , STOEHR ANTJE 
Published: August 2013

ABSTRACTThis study investigates the adult grammars of French simultaneous bilingual speakers (2L1s) whose other language is German. Apart from providing an example of French as heritage language in Europe, the goals of this paper are (i) to compare the acquisition of French in a minority and majority language context, (ii) to identify the relative vulnerability of individual domains, and (iii) to investigate whether 2L1s are vulnerable to language attrition when moving to their heritage country during adulthood. We include two groups of German-French 2L1s: One group grew up predominantly in France, but moved to Germany during adulthood; the other group grew up predominantly in Germany and stayed there. Performance is compared in different domains, including adjective placement, gender marking, articles, prepositions, foreign accent and voice onset time. Results indicate that differences between the two groups are minimal in morpho-syntax, but more prominent in pronunciation.
What to do with screening for distress scores? Integrating descriptive data into clinical practice
Authors: Blais Marie-Claude , St-Hilaire Alexandre , Fillion Lise , De Serres Marie , Tremblay Annie 
Published: August 2013

AbstractObjective:Implementation of routine Screening for Distress constitutes a major change in cancer care, with the aim of achieving person-centered care.Method:Using a cross-sectional descriptive design within a University Tertiary Care Hospital setting, 911 patients from all cancer sites were screened at the time of their first meeting with a nurse navigator who administered a paper questionnaire that included: the Distress Thermometer (DT), the Canadian Problem Checklist (CPC), and the Edmonton Symptom Assessment System (ESAS).Results:Results showed a mean score of 3.9 on the DT. Fears/worries, coping with the disease, and sleep were the most common problems reported on the CPC. Tiredness was the most prevalent symptom on the ESAS. A final regression model that included anxiety, the total number of problems on the CPC, well-being, and tiredness accounted for almost 50% of the variance of distress. A cutoff score of 5 on the DT together with a cutoff of 5 on the ESAS items represents the best combination of specificity and sensitivity to orient patients on the basis of their reported distress.Significance of results:These descriptive data will provide valuable feedback to answer practical questions for the purpose of effectively implementing and managing routine screening in cancer care.
Ketamine alters oscillatory coupling in the hippocampus
Authors: Caixeta Fábio V. , Cornélio Alianda M. , Scheffer-Teixeira Robson , Ribeiro Sidarta , Tort Adriano B. L. 
Published: August 2013

AbstractRecent studies show that higher order oscillatory interactions such as cross-frequency coupling are important for brain functions that are impaired in schizophrenia, including perception, attention and memory. Here we investigated the dynamics of oscillatory coupling in the hippocampus of awake rats upon NMDA receptor blockade by ketamine, a pharmacological model of schizophrenia. Ketamine (25, 50 and 75 mg/kg i.p.) increased gamma and high-frequency oscillations (HFO) in all depths of the CA1-dentate axis, while theta power changes depended on anatomical location and were independent of a transient increase of delta oscillations. Phase coherence of gamma and HFO increased across hippocampal layers. Phase-amplitude coupling between theta and fast oscillations was markedly altered in a dose-dependent manner: ketamine increased hippocampal theta-HFO coupling at all doses, while theta-gamma coupling increased at the lowest dose and was disrupted at the highest dose. Our results demonstrate that ketamine alters network interactions that underlie cognitively relevant theta-gamma coupling.
Phosphatidylinositol 3-phosphate 5-kinase (PIKfyve) is an AMPK target participating in contraction-stimulated glucose uptake in skeletal muscle
Authors: Liu Yang , Lai Yu-Chiang , Hill Elaine V. , Tyteca Donatienne , Carpentier Sarah , Ingvaldsen Ada , Vertommen Didier , Lantier Louise , Foretz Marc , Dequiedt Franck , Courtoy Pierre J. , Erneux Christophe , Viollet Benoît , Shepherd Peter R. , Tavaré Jeremy M. , Jensen Jørgen , Rider Mark H. 
Published: August 2013

PIKfyve (FYVE domain-containing phosphatidylinositol 3-phosphate 5-kinase), the lipid kinase that phosphorylates PtdIns3P to PtdIns(3,5)P2, has been implicated in insulin-stimulated glucose uptake. We investigated whether PIKfyve could also be involved in contraction/AMPK (AMP-activated protein kinase)-stimulated glucose uptake in skeletal muscle. Incubation of rat epitrochlearis muscles with YM201636, a selective PIKfyve inhibitor, reduced contraction- and AICAriboside (5-amino-4-imidazolecarboxamide riboside)-stimulated glucose uptake. Consistently, PIKfyve knockdown in C2C12 myotubes reduced AICAriboside-stimulated glucose transport. Furthermore, muscle contraction increased PtdIns(3,5)P2 levels and PIKfyve phosphorylation. AMPK phosphorylated PIKfyve at Ser307 both in vitro and in intact cells. Following subcellular fractionation, PIKfyve recovery in a crude intracellular membrane fraction was increased in contracting versus resting muscles. Also in opossum kidney cells, wild-type, but not S307A mutant, PIKfyve was recruited to endosomal vesicles in response to AMPK activation. We propose that PIKfyve activity is required for the stimulation of skeletal muscle glucose uptake by contraction/AMPK activation. PIKfyve is a new AMPK substrate whose phosphorylation at Ser307 could promote PIKfyve translocation to endosomes for PtdIns(3,5)P2 synthesis to facilitate GLUT4 (glucose transporter 4) translocation.
Patientenzufriedenheit bei onkologischen Erkrankungen – Eine differenzierte Betrachtung der Sektoren Hausarzt, Facharzt, Krankenhaus und Krankenkasse
Authors: Degen C. , Möller D. , Schlechter C. 
Published: August 2013

ZusammenfassungDie vorliegende Studie untersucht die Einflussgrößen für Patientenzufriedenheit bei onkologischen Patienten. Hierbei wird einerseits die Zufriedenheit mit den Hausärzten, den Fachärzten, dem Krankenhaus sowie den Krankenkassen betrachtet und andererseits die sektorübergreifende Zusammenarbeit in der gesamten onkologischen Versorgung.An der Patientenbefragung haben 12 Facharztpraxen in 8 Bundesländern teilgenommen. Insgesamt beteiligten sich 516 Patienten im Untersuchungszeitraum 2011 – 2012 an der empirischen Erhebung. Die Auswertung erfolgt mittels der multiplen Regressionsanalyse.Die Untersuchung zeigt, dass Patienten mit der sektorübergreifenden Zusammenarbeit zufriedener sind, wenn Zufriedenheit mit der Krankenkasse und der fachärztlichen Versorgung besteht. Die differenzierte Betrachtung der Zufriedenheit mit den Sektoren gibt Aufschluss darüber, dass für den haus- und fachärztlichen Bereich das Vertrauen in den Arzt als wichtigste Komponente wahrgenommen wird. Bei Krankenhäusern ist entscheidend, dass sich die Ärzte ihren Patienten gegenüber interessiert zeigen und Zeit für die Patienten nehmen. Für Krankenkassen wurde die Bereitstellung von genügend Informationen als größter Zufriedenheitstreiber identifiziert.In der Patientenwahrnehmung der Zufriedenheit mit einzelnen Sektoren spielen vor allem psychosoziale Faktoren eine wichtige Rolle. Hierunter fallen z. B. das Vertrauen in den Arzt oder das Besprechen von Ängsten des Patienten. Diese Faktoren sollten von den beteiligten Akteuren im Umgang mit den Patienten stärker fokussiert werden. Krankenkassen können hierbei als kompetenter Ansprechpartner fungieren, der den Patienten qualitätsgesicherte Informationen im Kontext der onkologischen Erkrankung bereitstellt.
Stable birational equivalence and geometric Chevalley-Warning
Authors: Liao Xia 
Published: August 2013

We propose a “geometric Chevalley-Warning” conjecture, that is, a motivic extension of the Chevalley-Warning theorem in number theory. Its statement is equivalent to a recent question raised by F. Brown and O. Schnetz. In this paper we show that the conjecture is true for linear hyperplane arrangements, quadratic and singular cubic hypersurfaces of any dimension, and cubic surfaces in

P

3

\mathbb {P}^3

. The last section is devoted to verifying the conjecture for certain special kinds of hypersurfaces of any dimension. As a by-product, we obtain information on the Grothendieck classes of the affine “Potts model” hypersurfaces considered by Aluffi and Marcolli.
SPNConverter: a new link between static and dynamic complex network analysis
Authors: Dent Jennifer E. , Yang Xinyi , Nardini Christine 
Published: August 2013

Abstract
Summary: The signaling Petri net (SPN) simulator, designed to provide insights into the trends of molecules’ activity levels in response to an external stimulus, contributes to the systems biology necessity of analyzing the dynamics of large-scale cellular networks. Implemented into the freely available software, BioLayout Express3D, the simulator is publicly available and easy to use, provided the input files are prepared in the GraphML format, typically using the network editing software, yEd, and standards specific to the software. However, analysis of complex networks represented using other systems biology formatting languages (on which popular software, such as CellDesigner and Cytoscape, are based) requires manual manipulation, a step that is prone to error and limits the use of the SPN simulator in BioLayout Express3D. To overcome this, we present a Cytoscape plug-in that enables users to automatically convert networks for analysis with the SPN simulator from the standard systems biology markup language. The automation of this step opens the SPN simulator to a far larger user group than has previously been possible.
Availability and implementation: Distributed under the GNU General Public License Version 3 athttp://apps.cytoscape.org/apps/spnconverter.
Contact: christine@picb.ac.cn
Molecular cocrystals of 5-(4-bromophenyl)-1,3,4-thiadiazol-2-amine: hydrogen bonding in the structures of the 1:1 adduct with 2-(naphthalen-2-yloxy)acetic acid and the salt with 3,5-dinitrobenzoic acid
Authors: Smith Graham , Lynch Daniel E. 
Published: August 2013

The crystal structures of the anhydrous products from the interaction of 5-(4-bromophenyl)-1,3,4-thiadiazol-2-amine with 2-(naphthalen-2-yloxy)acetic acid,viz.the 1:1 adduct C8H6BrN3S·C12H10O3, (I), and with 3,5-dinitrobenzoic acid,viz.the salt 2-amino-5-(4-bromophenyl)-1,2,4-thiadiazol-3-ium 3,5-dinitrobenzoate, C8H7BrN3S+·C7H3N2O6−, (II), have been determined. In adduct (I), a heterodimer is formed through a cyclic hydrogen-bonding motif [graph setR22(8)], involving carboxylic acid–heteroatom O—H...N and amine–carboxylic acid N—H...O interactions. The heterodimers are essentially planar, with a thiadiazole-to-naphthalene ring dihedral angle of 15.9 (2)° and an intramolecular thiadiazole-to-benzene ring angle of 4.7 (2)°. An amine–heteroatom N—H...N hydrogen bond between the heterodimers generates a one-dimensional chain structure extending down [001]. Also present are weak benzene–benzene and naphthalene–naphthalene π–π stacking interactions down thebaxis [minimum ring-centroid separation = 3.936 (3) Å]. With salt (II), the cation–anion association is also through a cyclicR22(8) motif but involving duplex N—H...Ocarboxylatehydrogen bonds, giving a heterodimer that is close to planar [dihedral angles between the thiadiazole ring and the two benzene rings = 5.00 (16) (intra) and 7.23 (15)° (inter)]. A secondary centrosymmetric cyclic R_{4}^{2}(8) N—H...Ocarboxylatehydrogen-bonding association involving the second amino H atom generates a heterotetramer. Also present in the crystal structure are weak π–π interactions between thiadiazolium rings [minimum ring-centroid separation = 3.9466 (18) Å], as well as a short Br...Onitrointeraction [3.314 (4) Å]. The two structures reported here now provide a total of three crystallographically characterized examples of cocrystalline products from the interaction of 5-(4-bromophenyl)-1,3,4-thiadiazol-2-amine with carboxylic acids, of which only one involves proton transfer.
Social reporting by Islamic banks: does social justice matter?
Authors: Kamla Rania , G. Rammal Hussain 
Published: August 2013

Purpose– This study examines social reporting by Islamic banks with special emphasis on themes related to social justice. By using critical theory and “immanent critique”, the study attempts to explain and delineate reasons for disclosures and silences in Islamic banks ' annual reports and web sitesvis-à-vissocial justice.Design/methodology/approach– The approach taken was a content analysis of annual reports and web sites of 19 Islamic banks.Findings– Islamic banks ' disclosures emphasise their religious character through claims that they adhere to Sharia ' s teachings. Their disclosures, however, lack specific or detailed information regarding schemes or initiativesvis-à-vispoverty eradication or enhancing social justice.Research limitations/implications– Limitations associated with content analysis of annual reports and internet web sites apply. This study focuses on Islamic banks ' social roles. Further studies of banks ' social roles in society in general are of interest.Practical implications– Drawing attention of Islamic banks and other stakeholders to the gap between the rhetorical religious and ethical claims of Islamic banks and their activities (as depicted through their disclosures) opens up the possibility of a positive change in Islamic banks ' actual social roles.Originality/value– The study fills a gap in both social accounting and Islamic accounting literatures with its emphasis on social justice and poverty eradication. The study contributes to the very scarce literature linking religion (especially Islam), critical theory, social accounting and Islamic accounting. It goes beyond previous research in Islamic accounting literature by exposing contradictions in the Islamic banking industry ' s rhetoric regarding their social role in society.
Methodological problems of sampling young homeless people in four European societies with different levels of service provision and definitions of homelessness
Authors: Smith Joan 
Published: August 2013

PurposeThis article aims to describe methodological issues in relation to the definition of homelessness and the drawing of samples of young homeless people in four European countries. The purposes of the research project were, first, to make a comparison of different homeless situations facing young people in these four countries, and second, to introduce early intervention and action planning methodologies developed in the UK and The Netherlands to other countries in the study – Portugal (a family welfare society) and the Czech Republic (an ex‐communist regime redeveloping its welfare policies).Design/methodology/approachAfter extensive discussions and key worker interviews with local agencies, 54 homeless young people were interviewed in each country. Each sample was intended to be purposive in that it should recruit homeless young men and women from those born in that country from the dominant (white) ethnic group, born in that country from minority ethnic groups, and young people not born in that country. A major issue was how to define homelessness in order to be able to recruit across the spectrum of homeless youth.FindingsThe purposive samples recruited in the four countries reflected the availability of services in those countries and levels of family support. Whilst young homeless people in The Netherlands and the UK were mostly living in supported housing, in Portugal they were living as “hidden homeless” and in the Czech Republic on the streets or in squats.Research limitations/implicationsThe methodological difficulties encountered during the project are themselves a useful lesson learnt, for the creation of trans‐national understanding and politicy.Practical implicationsNevertheless, despite the very different circumstances of limited services in Portugal and the Czech Republic, it appeared that both early intervention methods and key working approaches could be applied broadly across the EU.Originality/valueTransnational studies of youth homelessness are rare and therefore produce particularly useful insights for research, policy and practice.
Bridging situated learning theory to the resource‐based view of project management
Authors: Jugdev Kam , Mathur Gita 
Published: August 2013

PurposeThis paper aims to present a high‐level conceptual framework to strengthen the conceptual bridge between project management and workplace learning by applying situated learning theory to project management practice to guide shared learning within and between projects.Design/methodology/approachThe paper bridges situated learning theory from the workplace learning literature and the resource‐based view (RBV) of project management from the strategic management literature, using them as lenses to view two learning mechanisms in the project management domain, project reviews and communities of practices.FindingsThe paper finds that situated learning theory can be applied to project management to highlight processes that enable capability development through shared project learning.Research limitations/implicationsThis paper is conceptual in nature and intended to make a case for empirical research that draws on workplace learning literature which is useful to project management as there remains the challenge of leveraging these perspectives for project management practice.Practical implicationsThe paper believes that situated learning theory offers insights that can be leveraged to make project management environments more effective through improved intra‐project and inter‐project shared learning.Originality/valueThis paper presents a high‐level conceptual framework to bridge situated learning theory to the RBV of project management. The paper finds that situated learning theory is well suited to contribute to an understanding of shared learning in projects and justifies future research.