bluuebunny/crossref_metadata_2025_split huggingface dataset:
Solanum viarum Dunal (Solanaceae), Primer Reporte para Honduras
Authors: Díaz Rodrigo , Samayoa Ana C. , Overholt William A. 
Published: June 2011

La maleza invasora Solanum viarum Dunal (Solanaceae) es reportada por primera vez para Honduras. La planta, nativa de Sudamérica, fue localizada en un estacionamiento de la Escuela Agrícola Panamericana, El Zamorano, Honduras, el 26 de noviembre de 2007. Esta maleza es altamente invasora en pasturas debido a que el ganado puede transportar semillas en su tracto digestivo.DOI: http://dx.doi.org/10.5377/ceiba.v49i1.300
Percepciones sobre programas de formación e institucionalidad en Seguridad Alimentaria y Nutricional (SAN) en Honduras
Authors: Ardón Carlos Roberto , Afonso Gallegos Ana 
Published: June 2011

El hambre es un problema que afecta en la actualidad a más de 1,000 millones de personas en el mundo, de los cuales 53 millones están en América Latina. Honduras no es ajena a ese problema, el 12% de su población no dispone de los alimentos suficientes para una vida saludable. En los últimos años, organizaciones de prestigio internacional han estudiado el problema y planteado diversas estrategias de solución; es vital el compromiso político de los estados y la participación de instituciones y personas con voluntad y capacidad de aplicar dichas estrategias en los territorios más desfavorecidos. Con el objetivo de conocer la situación en Honduras sobre programas de formación e institucionalidad en Seguridad Alimentaria Nutricional (SAN), se realizó un estudio de percepciones entre profesionales de distintos sectores y con vinculación comprobada con el tema. La educación superior en el país es considerada entre poco y nada pertinente con la SAN por la mayoría de los encuestados. Un alto porcentaje de ellos cree que se debe aumentar la oferta de formación en SAN y definen el nivel de pregrado como más importante. Existen diversas instancias de coordinación alrededor del tema y la mayoría visualiza diversos beneficios de las mismas, pero se necesita más coordinación para incidir a nivel de políticas públicas. La participación de las universidades en estos espacios es considerada poco relevante; sugiriendo que deberían jugar un rol más determinante, especialmente en la investigación y generación de información. Por la gravedad del problema y con el objetivo de una mayor sensibilización e integralidad de esfuerzos, además de la creación de programas específicos, se sugiere que la SAN sea abordada de manera transversal en el sistema educativo nacional.Palabras clave: Pertinencia educativa, políticas públicas, seguridad alimentaria.DOI: http://dx.doi.org/10.5377/ceiba.v50i1.190
Structured fault detection filters for LPV systems modeled in an LFR manner
Authors: Henry D. 
Published: June 2011

SUMMARYThis paper investigates the design of robust‡ fault detection and isolation filters for linear parameter‐varying systems modeled in a linear fractional representation fashion. The goal is to obtain structured fault detection filters with enhanced fault transmission H− gain and large H∞ nuisance attenuation. It is shown by means of the scaling matrices technique and the projection lemma that the synthesis of the residual structuring and the filter state‐space matrices can be performed simultaneously using linear matrix inequality optimization techniques. Computational aspects are discussed and it is shown that the proposed solution is structurally well defined. Closed‐loop time simulations demonstrate the efficiency of the proposed method. Copyright © 2011 John Wiley & Sons, Ltd.
Psycho‐political Dynamics of the Bystander in Luis Puenzo's “The Official Story”
Authors: Hollander Nancy Caro 
Published: June 2011

ABSTRACTThis article analyzes the psychopolitical dynamics of the bystander phenomenon in the context of Argentine state terror. It explores the population's adaptation to the military's Official Story through psychological defences that resulted in losses of individual and group identity. It depicts the factors that potentiate disengagement from a coercive power and its culture of fear. These themes are examined in Luis Puenzo's 1985 Academy‐award winning film, The Official Story, whose story portrays the psychological and ideological characteristics of the bystander and the capacity of the subject to emerge from self‐deception to tolerate the complex truths of psychic and social reality. Copyright © 2011 John Wiley & Sons, Ltd.
Vergleich der natürlichen und beschleunigten Alterung von Verklebungen für Luftdichtheitsschichten
Authors: Maas Anton , Gross Rolf 
Published: June 2011

AbstractDer Beitrag beschreibt die Überprüfung des Verfahrens der beschleunigten Alterung zur Beurteilung der Dauerhaftigkeit von Klebeverbindungen für Luftdichtheitsschichten von Gebäuden. Die Messergebnisse der Versuche mit natürlich gealterten Rückstellproben werden den Ergebnissen nach einer künstlichen Alterung gegenüber gestellt, um die Eignung des zur Anwendung gekommenen Verfahrens zu belegen.Comparison of naturally and accelerated aging of adhesive airtight joints. The article presents a verfication of using accelerated aging as a method for the assessment of the durability of adhesive joints in the airtightness layers in buildings. The results of experiments with naturally aged samples are compared to the results of an investigation of accelerated aging.
Hygrothermische Berechnung der Einsatzgrenzen unterschiedlicher Systeme bei der Aufdoppelung von Wärmedämmverbundsystemen
Authors: Krus Martin , Rösler Doris 
Published: June 2011

AbstractViele der an den Bestandsgebäuden eingesetzten Wärmedämmverbundsysteme (WDVS) sind zwar noch voll funktionsfähig, entsprechen aber bei weitem nicht mehr dem heutigen Dämmstandard. Ein Rückbau und Ersatz dieser Systeme ist meist weder ökonomisch noch ökologisch sinnvoll, weshalb als Alternative die WDVS “aufgedoppelt” werden. Das Ziel der folgend beschriebenen Untersuchungen besteht deshalb darin, festzustellen, ob hierbei aus feuchtetechnischer Sicht Probleme zu erwarten sind bzw. welche Kombinationen von Systemen als unkritisch einzustufen sind. Insgesamt werden elf Bauteilvarianten mit aufgedoppelten WDVS mit Hilfe eindimensionaler Berechnungen in Bezug auf ihr feuchtetechnisches Verhalten beurteilt. Dabei zeigen alle Varianten geringe mittlere Wassergehalte in den Dämmschichten, sodass keine wesentliche Absenkung des Dämmniveaus zu erwarten ist. Bei vier der untersuchten Varianten zeigen sich aber lokal zeitweise sehr hohe Wassergehalte, die zu Problemen durch Frost oder ablaufendes Kondenswasser führen können.Hygric calculations of the application limits of different additional ETICS systems. A lot of exterior thermal insulation composite systems (ETICS) on existing buildings are still performing well, but they do not comply with actual standards of energy saving. In most cases a dismantling and substitution of these systems is not reasonable from the economic and ecologic point of view. An alternative solution may be to apply an additional ETICS on top of the existing one. Hence the aim of the investigations is to assess which combinations will work well and which will cause hygric problems. For eleven different combinations the moisture balance has been investigated by one‐dimensional hygric calculations. All systems show low mean water contents, which will not result in a reduced insulation performance. But with four of these sys tems high local moisture contents have been observed, which may cause problems due to frost or draining condensate.
Ein einfaches Modell zur Vorhersage der Fassaden‐ und Grenzschichttemperatur
Authors: Pfafferott Jens , Fischer Martin , Strohmeyer Tobias , Wirth David 
Published: June 2011

AbstractDie Fassadentemperatur selbst hat in Gebäuden mit einer bauphysikalisch guten Gebäudehülle nur einen geringfügigen Einfluss auf den Transmissionswärmestrom durch die Außenwand. Der Kühlbedarf kann aber in Gebäuden mit Fensterlüftung oder Fassadenlüftungsgeräten deutlich höher ausfallen als in der Planung prognostiziert, weil die Lufttemperatur in der Grenzschicht vor der Fassade um mehrere Kelvin höher liegt als die ungestörte Außenlufttemperatur. Monatsbilanzverfahren oder Programme zur thermischen Gebäudesimulation können in der Regel nur eine Außentemperatur für die Berechnung des Wärmeübergangs an der Gebäudehülle und des Lüftungswärmestroms verwenden. Eine Möglichkeit, den Grenzschichteffekt zu berücksichtigen, ist die Anpassung der ungestörten Außenlufttemperatur mit Hilfe eines einfachen Modells.A simplified model to predict the temperature of the boundary layer of façades. The cooling energy demand of low‐energy buildings with a high‐quality building envelope is rather affected by solar and internal heat gains and the ventilation than by the heat transmission through the building envelope. Hence, the surface temperature of the façade has a small influence on the cooling energy demand. However, the higher air temperature in the boundary layer at the façade may increase the cooling load in buildings with window opening or façade integrated air‐handling units. Neither monthly energy calculation programs nor building simulation programs use different temperatures for the ambient air to calculate the heat transfer through the façade and for the boundary layer to calculate the heat flux by ventilation. This article presents a methodology how to adapt the ambient air temperature to the temperature of the boundary layer.
Ergebnisse einer Großstudie über Nutzeranforderungen an Wohngebäude
Authors: Völker Conrad , Beckmann Julia , Kornadt Oliver 
Published: June 2011

AbstractDie Zufriedenheit mit dem Wohnumfeld ist von großer Bedeutung für das gesamte Wohlbefinden des Menschen. Zur Untersuchung der Nutzeranforderungen an Wohngebäude wurden 11 Kriterien des nutzerorientierten Bauens identifiziert. Die Wichtigkeit jedes einzelnen Kriteriums aus Sicht des Nutzers wurde anschließend in einer umfangreichen Befragung ermittelt. Zur Erhebung der Daten wurde eine so genannte Post Occupancy Evaluation durchgeführt. Die Repräsentativität der Studie mit insgesamt 1416 Teilnehmern konnte nachgewiesen werden. Aus den ermittelten Daten konnte eine Rangordnung der Kriterien abgeleitet werden. Des Weiteren wurden die Akzeptanz und Beeinträchtigung von Mängeln bezüglich dieser Kriterien sowie die Zufriedenheit der Nutzer abgefragt. Zur Erklärung der Zusammenhänge zwischen den erhobenen Konstrukten Wichtigkeit, Akzeptanz, Beeinträchtigung und Zufriedenheit wurde ein Erklärungsmodell aufgestellt. Dieses konnte mittels Korrelations‐ und Regressionsanalyse basierend auf den erhobenen Daten bestätigt werden.Results from a large scale study on user requirements for residential buildings. In relation to human needs, 11 criteria defining user‐oriented construction were identified in a first study. The importance of each criterion from the perspective of the user was then investigated with a comprehensive survey. In order to collect the data, a post‐occupancy evaluation was conducted. The representativeness of the study with a total of 1,416 participants could be detected. From the data obtained, a hierarchy of the criteria was derived. Furthermore, the acceptance and impairment of deficiencies regarding these criteria as well as the satisfaction of the users were queried. To explain the relationship between the constructs importance, acceptance, impairment and satisfaction, an explanatory model has been constructed. By dint of correlation and regression analysis, the model was confirmed based on the data collected.
Auswirkungen der Neufassung von DIN 4109 auf die Nachweise des baulichen Schallschutzes anhand eines Vergleiches der Anforderungen und Nachweisverfahren
Authors: Bertz Christian 
Published: June 2011

AbstractAuf Grundlage einer Masterarbeit an der Beuth Hochschule für Technik Berlin [1] beschäftigt sich dieser Beitrag mit den zulässigen Anforderungen von E DIN 4109‐1 und stellt einen Vergleich zwischen den Anforderungen der noch gültigen DIN 4109:1989 und den neuen Vorschriften her. Dabei wird zusätzlich Bezug auf die neuen Rechenverfahren und deren Änderungen genommen.
Better Heuristics for Economic Search — Experimental and Simulation Evidence
Authors: Moon Philip , Martin Andrew 
Published: June 2011

AbstractHeuristic strategies for search for the most economic price of a good (including search cost) are experimentally generated, rigorously tested and their utility compared with previous work. Strategies are identified which significantly out‐perform previous rules or are more likely to be used in practice, both with and without detailed knowledge of the underlying price distribution. Some ‘expert strategies’ are also suggested.
The Development of a Process for Evaluating Marketing Sponsorships
Authors: O'Reilly Norm , Madill Judith 
Published: June 2011

AbstractDespite the increasing resources being allocated from marketing budgets to sponsorship, effective evaluation is relatively rare, and sponsorship evaluation methods are often proprietary in nature. This paper reports on a research project designed to develop a process model for evaluating sponsorships. An initial version was conceived from agency theory, the evaluation literature, and sponsorship writings. This draft was then assessed by sponsorship experts during a series of 14 in‐depth interviews. Based on these analyses, a final version of the process model was proposed. The revised version was then adopted to evaluate—as a demonstrative example—a specific sponsorship. Results of this case and recommendations for future research and practice in sponsorship evaluation are presented. Copyright © 2011 ASAC. Published by John Wiley & Sons, Ltd.
Presuccession Performance, CEO Succession, Top Management Team, and Change in a Firm's Internationalization: The Moderating Effect of CEO/Chairperson Dissimilarity
Authors: Liu Yunshi , Valenti M. Alix , Yu Hui‐Yun 
Published: June 2011

AbstractExtending the literature on CEO succession, we found that a succession event together with a change in top management related positively to strategic change toward greater internationalization. In a study of 160 Taiwanese firms, we found relationships between firm performance, outside CEO appointment, change in firm's top management team (TMT), and the degree of a firm's internationalization. Moreover, the positive association between a post succession TMT structural change and degree of internationalization was observed only in those cases where dissimilarity between CEO and chairperson (with respect to educational degree and overseas education) was low. The implications of these findings for scholarship and practice are discussed. Copyright © 2011 ASAC. Published by John Wiley & Sons, Ltd.
Virtue Ethics in Positive Organizational Scholarship: An Integrative Perspective
Authors: Bright David S. , Stansbury Jason , Alzola Miguel , Stavros Jacqueline M. 
Published: June 2011

AbstractThe movement of Positive Organizational Scholarship (POS) aims to understand the factors that contribute to a flourishing human condition. Theorists from this group regularly invoke virtue as a foundational concept, using it to anchor the meaning of “positive.” Yet virtue ethicists have raised concerns that this grounding is based in a superficial understanding of virtue. This paper proposes an integrative framework to bridge the two perspectives, connecting the notion of “positive deviance”—popularized in POS—to the idea of virtue as a mean between extremes as understood in the philosophy of virtue ethics. Copyright © 2011 ASAC. Published by John Wiley & Sons, Ltd.
The Use of Governance Indexes in the Governance‐Performance Relationship Literature: International Evidence
Authors: Bozec Richard , Bozec Yves 
Published: June 2011

AbstractThe objective of this study is threefold. First, we present a review of the international studies that have investigated the link between firm‐level governance scores and performance. To our knowledge, this study is the first to provide a comprehensive review of this recent and growing literature. Second, we discuss potential methodological shortcomings of using governance indexes. Third, we propose directions for future research. Overall, a clear positive relation is found between governance ratings and performance in Europe and in emerging economies, whereas studies conducted in the US and Canada have generated mixed evidence. The empirical problems related to measurement, substitution between governance arrangements, endogeneity, and optimization across governance choices are discussed. Solutions are proposed to alleviate these concerns. Copyright © 2011 ASAC. Published by John Wiley & Sons, Ltd.
Investigating Information Systems Research in Canada
Authors: Serenko Alexander , Jiao Changquan 
Published: June 2011

AbstractThis project reports on the state of Information Systems (IS) research in Canada by analyzing research output and impact of Canadian IS scholars appearing in the form of peer‐reviewed journal articles. Specifically, we (a) measured individual productivity and impact, (b) measured institutional productivity and impact, (c) listed journals in which these works have appeared, (d) identified the most influential articles, (e) developed a ranking of IS scholarly journals from a Canadian perspective, and (f) compared the obtained journal ranking with the global IS journal rankings. Based on the findings, it was concluded that the Canadian IS discipline exhibits signs of academic maturity. Copyright © 2011 ASAC. Published by John Wiley & Sons, Ltd.
Perceptions on corporate social responsibility: A study in capturing public confidence
Authors: Shauki Elvia 
Published: June 2011

AbstractThis study examines the perceptions and expectations of the stakeholders of corporate social responsibility (CSR) disclosure practices in Indonesia based on CSR‐related items. Using survey data on CSR disclosures in Indonesia, this study applies factor analysis to identify relationships among nine CSR characteristics. The statistical results indicate that the relationship between CSR contents, incentives, format, public confidence, and impact on investment decisions is positively and directly related. Furthermore, incentives also influence investment decisions via CSR contents, formats, and changes in public confidence. However, there is no significant relationship between expectations, importance of CSR reporting, CSR reputation, and level of public confidence in both direct and mediating models. The results also show that there is significant difference in stakeholders' perceptions of CSR disclosures among gender, age, job category, and work tenure. These findings provide better insight for reports and regulators on the appropriateness of CSR and policy implications related to impact on investment decisions. Copyright © 2011 John Wiley & Sons, Ltd and ERP Environment.
Excited States of Warm Dense Matter
Authors: Norman G. E. , Skobelev I. Yu. , Stegailov V. V. 
Published: June 2011

AbstractThe excited states of the warm dense matter (WDM) are considered. The main attention is paid to the so called structured warm dense matter (SWDM). The SWDM has partly (or fully) ionized plasma properties as well as crystal ones. The methods for WDM creation is described shortly. We give situations where SWDM demonstrates crystal or plasma features. The finite temperature density functional theory approach is deployed for description of the fcc LiF crystal in a two‐temperature warm dense matter state with hot electrons and cold lattice that is formed after ultrafast energy deposition. The lattice stability and the interatomic bonding at elevated electronic temperatures are studied. The methods of molecular dynamics and collisional‐radiative kinetics are used to investigate the plasma properties of WDM (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Two‐Temperature Warm Dense Matter Produced by Ultrashort Extreme Vacuum Ultraviolet‐Free Electron Laser (EUV‐FEL) Pulse
Authors: Inogamov N. A. , Faenov A. Ya. , Zhakhovsky V. V. , Pikuz T. A. , Skobelev I. Yu. , Petrov Yu. V. , Khokhlov V. A. , Shepelev V. V. , Anisimov S. I. , Fortov V. E. , Fukuda Y. , Kando M. , Kawachi T. , Nagasono M. , Ohashi H. , Yabashi M. , Tono K. , Senda Y. , Togashi T. , Ishikawa T. 
Published: June 2011

AbstractUltrashort X‐ray laser pulse acts onto electron subsystem of dielectrics such as LiF and transfers matter into a two‐temperature state with hot electrons excited by the pulse from valence to conduction band. Because of the small heat conduction, the hydrodynamic motion proceeds in adiabatic regime keeping the radiation attenuation depth Datt as the only scale of the spatial heat distribution. Hydrodynamic motion qualitatively changes with absorbed energy increase. At low fluences F ∼ 10mJ/cm2 a spallative removal of LiF remaining in solid state takes place. This is a reason for the low ablation threshold. The paper presents new experimental findings supporting this conclusion. For the first time these findings are obtained using ultrashort extreme vacuum ultraviolet‐free electron laser (EUV‐FEL). In the case of high fluence, also achieved in our experiments at EUV‐FEL, material removal happens as result of outflow of matter transferred into the gaseous state. This explains the slow growth of the amount of ablated mass with significant fluence increase (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
Warm Dense Matter Generation and DD Synthesis at Vacuum Discharge with Deuterium‐Loaded Pd Anode
Authors: Kurilenkov Yu. K. , Tarakanov V. P. , Guskov S. Yu. , Karpukhin V. T. , Valyano V. E. 
Published: June 2011

AbstractThe energetic ions and DD neutrons from microfusion at the interelectrode space of a low energy nanosecond vacuum discharge with deuterium‐loaded Pd anode has been demonstrated recently. To understand better the physics of fusion processes the detailed PIC simulation of the discharge experimental conditions have been developed using a fully electrodynamic code KARAT. The dynamics of main charge particle species was recon‐structed in time and interelectrode space. The principal role of a virtual cathode (VC) and the corresponding single and double potential well formed in the interelectrode space are recognised. The calculated depth φ of the quasistationary potential well (PW) of the VC is about 50‐60 kV, and the D+ ions being trapped by this well accelerate up to energy values needed to provide collisional DD nuclear synthesis. Both experiment and PIC simulations illustrate very favourable scaling of the fusion power density at decreasing of VC radius (∼φ2/r4VC) for the chosen inertial electrostatic confinement fusion scheme based on miniature nanosecond vacuum discharge. Meanwhile, the initial stage of discharge is understood still poorly. When voltage is applied, the electron beam extracted from cathode starts to interact with the surface of deuterium‐ loaded Pd anode. This early stage of discharge manifests sometime the peaks registered by photomultipliers which are similar to neutron ones from time‐of‐flight measure under the study of collisional DD synthesis at the further stages of discharge. The detailed study of Pd anode surface morphology have been performed and recognized, in particular, the number of various pores and craters of different sizes. We remark that besides of rather usual craters (due to electron beams – anode interaction) some of the craters on the Pd anode surface may correspond to anode ectons (explosive centres) and consider their possible nature. Specifics of warm dense matter (WDM) generated at different stage of discharge is discussed. The data obtained are compared with recent results on initiation of DD reactions by electron beams at deuterium ‐loaded Pd foils and correspondent data on their surface morphology (© 2011 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)