bluuebunny/crossref_metadata_2025_split huggingface dataset:
Antidiskriminierungsengagierte Schülerinnen und Schüler mit Einem Türkischen Hintergrund an Berliner Schulen: Intersektionen von Geschlechterkonzeptionen, Rassismuskritik, und Diversitätsverständnissen
Authors: Eggers Maureen Maisha 
Published: August 2013

In diesem Beitrag diskutiere ich die schulische Situation von Jugendlichenmit einem türkischen Hintergrund im Kontext ihrer (Selbst-) Einordnung alsPeople of Color bzw. als rassistisch markierte Subjekte. Insbesondere ineiner Gesellschaft die auch stark von der Post-9/11 medialen Berichterstattunggeprägt ist, ist die starke Rassifizierung von Jugendlichen of Color miteinem türkischen Hintergrund zunehmend deutlich geworden. DieseErfahrungen der Rassifizierung führen bei antidiskriminierungsengagierteJugendlichen mit einem türkischen Hintergrund, in vielen Fällen, zu Solidarisierungenmit Schwarzen (Deutschen) Jugendlichen. Rassismuserfah -rungen vereinen damit gewissermaßen antidiskriminierungsengagierteJugendliche of Color. Die Praxis dieser Jugendlichen of Color, betrachte ichvor dem Hintergrund der offiziellen Diversitätsbekundungen von BerlinerSchulen. Dabei fällt auf, dass Diversität als neues Label offenbar nicht zueiner Verminderung ihrer Diskriminierung führt. Es geht mir darum, dieanhaltende soziale Ungleichheit, die sich in Bildungsinstitutionen in der Alltagspraxisbeständig aktualisiert zu konkretisieren. Ich beziehe mich auf rassismuskritischeThematisierungen von hierarchisierter Differenz durchSchülerinnen of Color. Es handelt sich hierbei um Jugendliche, die sich ganzbewusst im Sinne einer Antidiskriminierungsarbeit an ihrer Schuleengagieren. Sie lenken durch ihre hegemoniekritischen Diskussionen denBlick auf vorhandene Formate, Inhalte und Barrieren der Thematisierungvon Heterogenität, sowie auf die diskursiven Intersektionen von Ausschlüssenan (Berliner) Schulen. Diversität scheint hier als Begriff—auf demersten Blick—gut geeignet, um Fragen der Benachteiligung und der strukturellenDiskriminierung, die in enger Wechselwirkung mit Heterogenitätbestehen, wahrnehmbar zu machen. Dass solche Bekenntnisse nicht eineautomatische Lösung bedeuten, sondern sogar zu einem Bestandteil des Problems werden können ist eine zentrale Argumentation dieses Beitrags. InAnknüpfung an dieser Kritik argumentiere ich, dass Diversität als neuesbzw. als neoliberalistisches Label ein oberflächliches Verständnis von Toleranzund Akzeptanz eingefasst ist, und dass durch ihre plakative Ausrichtungdas Ziel der Gleichstellung als erreicht gefeiert wird, obwohl die Hierarchienweiterhin fest an ihrem Platz bleiben.
Seed‐mediated connectivity among fragmented populations of Quercus castanea (Fagaceae) in a Mexican landscape
Authors: Herrera‐Arroyo M. Luisa , Sork Victoria L. , González‐Rodríguez Antonio , Rocha‐Ramírez Víctor , Vega Ernesto , Oyama Ken 
Published: August 2013

• Premise of study: Anthropogenic fragmentation is an ongoing process in many forested areas that may create loss of connectivity among tree populations and constitutes a serious threat to ecological and genetic processes. We tested the central hypothesis that seed dispersal mitigates the impact of fragmentation by comparing connectivity and genetic diversity of adult vs. seedling populations in recently fragmented populations of the Mexican red oak Quercus castanea.• Methods: Adult individuals, established before fragmentation, and seedlings, established after fragmentation, were sampled at 33 forest fragments of variable size (0.2 to 294 ha) within the Cuitzeo basin, Michoacán state, and genotyped using seven highly polymorphic chloroplast microsatellite markers (cpSSRs). To test whether seed dispersal retains connectivity among fragmented populations, we compared genetic diversity and connectivity networks between adults and progeny and determined the effect of fragment size on these values.• Key results: Seventy haplotypes were identified, 63 in the adults and 60 in the seedlings, with average within‐population diversity (hS) values of 0.624 in the adults and 0.630 in the seedlings. A positive correlation of genetic diversity values with fragment size was found in the seedling populations but not in the adult populations. The network connectivity analysis revealed lower connectivity among seedling populations than among adults. The number of connections (edges) as well as other network properties, such as betweenness centrality, node degree and closeness, were significantly lower in the seedlings network.• Conclusions: Habitat fragmentation in this landscape is disrupting seed‐dispersal‐mediated genetic connectivity among extant populations.
Anatomical and physical changes in leaves during the production of tamales
Authors: Angeles Guillermo , Lascurain Maite , Davalos‐Sotelo Raymundo , Zarate‐Morales Reyna Paula , Ortega‐Escalona Fernando 
Published: August 2013

• Premise of the study: Tamale preparation has a long tradition in Mexico. To understand which material properties have been considered important for this purpose throughout the years, a study was conducted of the anatomical, chemical, and mechanical properties of the leaves of four plant species used in tamale preparation in Veracruz, Mexico: Calathea misantlensis, Canna indica, Musa paradisiaca, and Oreopanax capitatus.• Methods: Four cooking treatments were considered: fresh (F), roasted (soasado, R), steamed (S), and roasted plus steamed (R/S). Chemical, anatomical, and mechanical analyses were conducted before and after each treatment. Leaf samples were tested for tensile strength at both parallel and perpendicular orientation relative to the fibers.• Key results: Musa paradisiaca had the highest proportion of cellulose, while the remaining species shared similar lower proportions. Leaves were stronger and stiffer in the longitudinal direction of the fibers. Musa paradisiaca leaves had higher values of mechanical strength than the other species. The cooking process that most affected the mechanical properties was steaming.• Conclusions: The chemical constituents of the leaves are closely correlated with their physical properties. The treatment that caused the greatest decrease in leaf physical integrity was steaming, while the combination of roasting and steaming showed similar results to those of steaming alone. No evident anatomical changes are produced by any of the treatments. This is one of the few studies comparing physical, chemical, and anatomical characteristics of leaves used for human consumption, before and after cooking.
Intraspecies variation in cotton border cell production: Rhizosphere microbiome implications
Authors: Curlango‐Rivera Gilberto , Huskey David A. , Mostafa Ayman , Kessler John O. , Xiong Zhongguo , Hawes Martha C. 
Published: August 2013

• Premise of the study: Border cells, which separate from the root cap, can comprise >90% of carbon‐based exudates released into the rhizosphere, but may not provide a general source of nutrients for soil microorganisms. Instead, this population of specialized cells appears to function in defense of the root tip by an extracellular trapping process similar to that of mammalian white blood cells. Border cell production is tightly regulated, and direct tests of their impact on crop production have been hindered by lack of intraspecies variation.• Methods: Border cell number, viability, and clumping were compared among 22 cotton cultivars. Slime layer “extracellular trap” production by border cells in response to copper chloride, an elicitor of plant defenses, was compared in two cultivars with divergent border cell production. Trapping of bacteria by border cells in these lines also was measured.• Key results: Emerging roots of some cultivars produced more than 20000 border cells per root, a 100% increase over previously reported values for this species. No differences in border cell morphology, viability, or clumping were found. Copper chloride‐induced extracellular trap formation by border cells from a cultivar that produced 27921 ± 2111 cells per root was similar to that of cells from a cultivar with 10002 ± 614 cells, but bacterial trapping was reduced.• Conclusions: Intraspecific variation in border cell production provides a tool to measure their impact on plant development in the laboratory, greenhouse, and field. Further research is needed to determine the basis for this variation, and its impact on rhizosphere community structure.
Serological Detection of Tobacco Mosaic Virus and Cucumber Mosaic Virus Infecting Tomato (Solanum Lycopersicum) Using a Lateral Flow Immunoassay Technique
Authors: Lamptey Joseph Nii Lante , Osei Michael Kwabena , Mochiah Moses Brandford , Osei Kingsley , Berchie Joseph Nketiah , Bolfrey-Arku Grace , Gilbertson Robert 
Published: August 2013

A study was conducted to determine the prevalence of Cucumber mosaic virus (CMV) and Tobacco mosaic virus (TMV) in some major tomato growing areas in Ghana as part of a comprehensive strategy for the management of viral diseases on tomato. The lateral flow immunoassay technique (the immunostrip test of Agdia Inc.) was used to assay for TMV and CMV in samples with symptoms of virus infection collected from some major tomato growing areas in Ghana; Vea, Tono and Pwalugu (Upper East region-UE), Agogo and Akumadan (Ashanti region-AR) and Tanoso and Tuobodom (Brong-Ahafo region-BA) in 2011 and 2012. In the UE, TMV and CMV were both detected at Vea, Tono and Pwalugu. In the AR, CMV and TMV were both detected at Akumadan while only CMV was detected at Agogo. In BA, TMV and CMV were both detected at Tanoso and Tuobodom. Field incidence of TMV was higher in the UE which had higher average daily temperatures. The serological identification of TMV in the three regions is the first of this virus in Ghana. This is also the first report of the use of this lateral flow immunoassay technique to detect these viruses in the country. The identification of TMV and CMV in Ghana gives an indication of the need to focus efforts for virus disease management on these virus in addition to the already known begomoviruses like Tomato yellow leaf curl Mali virus (TYLCMV)(Delete), Tomato leaf curl Kumasi virus and Tomato leaf curl Ghana virus.
Dragline, Egg Stalk and Byssus: A Comparison of Outstanding Protein Fibers and Their Potential for Developing New Materials
Authors: Lintz Eileen S. , Scheibel Thomas R. 
Published: August 2013

AbstractThis feature article discusses three remarkable protein fibers: spider dragline, lacewing egg stalk and mussel byssus. Sequence–structure–function relationships of selected proteins in the fibers are highlighted and the potential of these proteins for use as new materials is summarized.
Der Fernseher in der Westentasche: Flüssigkristall‐ Materialentwicklung für das neue Jahrtausend
Authors: Bremer Matthias , Kirsch Peer , Klasen‐Memmer Melanie , Tarumi Kazuaki 
Published: August 2013

AbstractNeue Flüssigkristalle mit sehr niedriger Viskosität, gutem Mesophasenverhalten und hoher Zuverlässigkeit ermöglichen den Durchbruch vom flachen Computermonitor zum großformatigen LCD‐Fernseher. Fluor spielt hierbei eine entscheidende Rolle, nicht nur, weil es Polarität in organischen Molekülen induziert, sondern auch wegen seiner niedrigen Polarisierbarkeit und seiner schwach ausgeprägten Tendenz zur Ionensolvatation. Zusätzlich sind in fluorierten Flüssigkristallen subtile stereoelektronische Effekte am Werk und ermöglichen eine Feinabstimmung der gewünschten Eigenschaften. Dafür ist eine aufwendige Chemie erforderlich, wie sie sich normalerweise in der Spezialchemie allein schon aus Kostengründen verbietet. Der Markt für Fernseh‐Displays tritt heute in eine Phase der Sättigung ein. Bedingt durch die weite Verbreitung des Internets gibt es jedoch einen neuen Trend zu mobilen Geräten. Tablet‐PCs und Smartphones benötigen berührungsempfindliche Bildschirme und niedrigen Stromverbrauch. Neue LC‐Modi mit hocheffizienten Flüssigkristallen und zusätzlichen Komponenten, z. B. polymerisierbaren Materialien, werden in solchen Produkten verwendet.
A new molecular explanation for age‐related neurodegeneration: The Tyr682 residue of amyloid precursor protein
Authors: Matrone Carmela 
Published: August 2013

AbstractEmerging evidence supports the role for the intracellular domains of amyloid precursor protein (APP) in the physiology and function of APP. In this short report, I discuss the hypothesis that mutation of Tyr682 on the Y682ENPTY687 C‐terminal motif of APP may be directly or indirectly associated with alterations in APP functioning and activity, leading to neuronal defects and deficits. Mutation of Tyr682 induces an early and progressive age‐dependent cognitive and locomotor decline that is associated with a loss of synaptic connections, a decrease in cholinergic tone, and defects in NGF signaling. These findings support a model in which APP‐C‐terminal domain exerts a pathogenic function in neuronal development and decline, and suggest that Tyr682 potentially could modulate the properties of APP metabolites in humans.
Simultaneous Modeling of Phase Equilibria and Interfacial Properties Using the PCP‐SAFT Model
Authors: Schäfer Elisabeth , Vogelpohl Christina , Sadowski Gabriele , Enders Sabine 
Published: August 2013

AbstractAm Beispiel der Hydroformylierung von Olefinen wurde die Modellierung von temperaturgesteuerten Lösungsmittelsystemen untersucht. Dazu werden Informationen über Flüssig/flüssig‐ und Gas/flüssig‐Gleichgewichte sowie Grenzflächeneigenschaften benötigt. Es konnte gezeigt werden, dass die Perturbed Chain Polar Statistical Associating Fluid Theory (PCP‐SAFT) in Kombination mit der Dichtegradiententheorie ein geeignetes Modellierungswerkzeug hierfür ist. Die Beschreibung der unterschiedlichen thermodynamischen Eigenschaften erfolgte mit einheitlichen Parametersätzen. Auch experimentelle Werte, die nicht bei der Parameteranpassung einbezogen wurden, konnten erfolgreich wiedergegeben werden. Somit ist eine zuverlässige Extrapolation auf nicht vermessene thermodynamische Zustände möglich ist.
On construction of heuristic QoS bandwidth management in clouds
Authors: Yang Chao‐Tung , Liu Jung‐Chun , Ranjan Rajiv , Shih Wen‐Chung , Lin Chih‐Hao 
Published: August 2013

ABSTRACTIn recent years, cloud computing has become popular and its applications widespread. Thus, there exists a common concern, that is, how to arrange and monitor various resources in the cloud computing environment. In the literature, Ganglia and Network Weather Service (NWS) were used to monitor and gather node status and network‐related data, respectively. With supports of Ganglia and NWS, one can effectively administer available resources in the cloud computing environment. In order to achieve high performance of cloud computing, comprehensive monitoring and efficient management are critical. Ganglia is often used to gather status data of resources, such as live states of hosts, CPU or memory utilizations, and surely Ganglia is also capable of monitoring network‐related information; however, instead of Ganglia, we used NWS services to gather network‐related information such as end‐to‐end transmission control protocol/Internet protocol performance data. Compared with Ganglia, NWS services offer more selections and flexibility for measurement schemes. Besides, NWS services could be deployed with nonintruding manner that makes it easier and faster in deploying services to cloud nodes. The network‐related information is acquired immediately after deployment. Although NWS services also provide measurements for CPU and memory utilizations, but less functionality is provided by them than Ganglia in these aspects. Therefore, we combine advantageous features of Ganglia and NWS to achieve the aims of effective monitoring and management of available resources in the cloud environment. Nevertheless, Ganglia and NWS services may not provide sufficient data in realistic situations due to diversified needs of users, especially application developers. For instance, users are not able to directly access utilizations or allocations of resources in the cloud environment via interfaces or channels of Ganglia or NWS. In addition, NWS services based on a domain‐based network information model could greatly decrease overheads caused by unnecessary measurements. Hence, we propose a heuristic QoS measurement approach based on the domain‐based information model. This measurement approach is capable of providing essential information to satisfy user requirements, and thus let users manage and monitor various resources in the cloud environment in a more efficient way. © 2013 Wiley Periodicals, Inc.
A hardware counter‐based toolkit for the analysis of memory accesses in SMPs
Authors: Lorenzo Oscar G. , Pena Tomás F. , Cabaleiro José C. , Pichel Juan C. , Lorenzo Juan A. , Rivera Francisco F. 
Published: August 2013

SUMMARYIn this paper, a set of three hardware counter (HC)‐based tools to characterise memory access of parallel codes in Symmetric Multiprocessors (SMPs) is presented. This toolkit simplifies accessing and programming HCs, which are included in modern microprocessors. Hardware counters are used to obtain information about memory accesses in a parallel code at very low cost. This information is presented to the user in a friendly way. The first tool can be used to automatically monitor the memory accesses of a system and to analyse a code even if the source is not available. The second tool allows the user to insert in a source code, in a simple and transparent way, the instructions needed to monitor and manage HCs. This way, specific parts of the code can be analysed. The user can either add appropriate directives to a C code or use a graphical interface to select those parts of the code to be analysed. The tool takes this source file and automatically adds the monitoring code. The third tool takes the information gathered by the aforementioned tools, processes it and displays it graphically. This tool shows the information in a comprehensive and simple way, allowing the user to adjust the level of detail. The aim of these tools was to characterise the memory accesses of parallel codes in multicore systems, in which the cache hierarchy can greatly influence the performance. For illustrative purposes, these tools were used to carry out two case studies, a sparse matrix vector product and a dot product. These studies have been made in two different environments. Anyway, they can be used in almost any system as long as the necessary HCs are available.Copyright © 2013 John Wiley & Sons, Ltd.
Dramatic response to climate change in the Southwest: Robert Whittaker's 1963 Arizona Mountain plant transect revisited
Authors: Brusca Richard C. , Wiens John F. , Meyer Wallace M. , Eble Jeff , Franklin Kim , Overpeck Jonathan T. , Moore Wendy 
Published: August 2013

AbstractModels analyzing how Southwestern plant communities will respond to climate change predict that increases in temperature will lead to upward elevational shifts of montane species. We tested this hypothesis by reexamining Robert Whittaker's 1963 plant transect in the Santa Catalina Mountains of southern Arizona, finding that this process is already well underway. Our survey, five decades after Whittaker's, reveals large changes in the elevational ranges of common montane plants, while mean annual rainfall has decreased over the past 20 years, and mean annual temperatures increased 0.25°C/decade from 1949 to 2011 in the Tucson Basin. Although elevational changes in species are individualistic, significant overall upward movement of the lower elevation boundaries, and elevational range contractions, have occurred. This is the first documentation of significant upward shifts of lower elevation range boundaries in Southwestern montane plant species over decadal time, confirming that previous hypotheses are correct in their prediction that mountain communities in the Southwest will be strongly impacted by warming, and that the Southwest is already experiencing a rapid vegetation change.
When Policy Hits the Ground. An Empirical Study of the Communication Practices of Project Managers of a Water Board in Conversations for Collaborative Governance
Authors: Lems P. , Aarts N. , van Woerkum C. M. J. 
Published: August 2013

ABSTRACTCivil servants organize collaborations with private actors with the aim of developing policy outcomes that fit environmental policy frameworks, shaping the course and outcome of collaborations through their communication practices. To investigate these practices and their effect, we conducted a case study, shadowing project managers from a Dutch water board. We identified two distinct communication practices: frame incorporation and frame amplification. These practices respectively expanded or narrowed a process of collaborative governance, either purposefully by building social capital or unintentionally by distancing the conversation partner and his concern. The structural difference between these practices suggests that civil servants lack shared practices that foster collaboration. Interestingly, in neither practice do the civil servants discursively acknowledge their dependence on their conversation partner's support, and thus they deny that they are participating in a negotiation process: they claim that their conversation partner should cooperate. In effect, their conversation partners bypass the incorporation and amplification practices. The research suggests that, of the two practices identified, only incorporation builds the social capital that enables civil servants to switch to another approach in future interactions and start an integrative negotiation on problems and solutions. Copyright © 2013 John Wiley & Sons, Ltd and ERP Environment
Local mobility and service access for enterprise femtocell networks
Authors: Zdarsky F. A. , Maeder A. , Schmid S. 
Published: August 2013

AbstractFemtocells were originally designed for standalone home deployment. Yet, there is a growing interest in exploiting their advantages also in many cell deployments for enterprises and public spaces. Such Enterprise Femtocell Networks (EFNs) differ not only in scale but also in user traffic patterns and service requirements. A significant share of user traffic in EFNs is local, that is, between mobile devices attached to the same EFN. In the current 3rd Generation Partnership Project (3GPP) architecture, this traffic is nevertheless sent to the mobile core network and back, causing unnecessary load on the core and backhaul network infrastructures. Local Internet Protocol (IP) Access (LIPA) and Selective IP Traffic Offload play important roles in EFNs, but the current 3GPP architecture supports them neither with full mobility within and to/from EFN nor with the possibility to (re‐)establish LIPA sessions from the macro network with a single, consistent mechanism.This paper addresses both problems by proposing the following: (1) a solution for localising data and control plane traffic that significantly offloads both the mobile core network and the backhaul and (2) a solution enabling a consistent local and remote access to enterprise services. These solutions are then evaluated in detail. Copyright © 2013 John Wiley & Sons, Ltd.