TY - GEN A1 - Gebser, Martin A1 - Lee, Joohyung A1 - Lierler, Yuliya T1 - On elementary loops of logic programs T2 - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe N2 - Using the notion of an elementary loop, Gebser and Schaub (2005. Proceedings of the Eighth International Conference on Logic Programming and Nonmonotonic Reasoning (LPNMR’05 ), 53–65) refined the theorem on loop formulas attributable to Lin and Zhao (2004) by considering loop formulas of elementary loops only. In this paper, we reformulate the definition of an elementary loop, extend it to disjunctive programs, and study several properties of elementary loops, including how maximal elementary loops are related to minimal unfounded sets. The results provide useful insights into the stable model semantics in terms of elementary loops. For a nondisjunctive program, using a graph-theoretic characterization of an elementary loop, we show that the problem of recognizing an elementary loop is tractable. On the other hand, we also show that the corresponding problem is coNP-complete for a disjunctive program. Based on the notion of an elementary loop, we present the class of Head-Elementary-loop-Free (HEF) programs, which strictly generalizes the class of Head-Cycle-Free (HCF) programs attributable to Ben-Eliyahu and Dechter (1994. Annals of Mathematics and Artificial Intelligence 12, 53–87). Like an HCF program, an HEF program can be turned into an equivalent nondisjunctive program in polynomial time by shifting head atoms into the body. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 566 KW - stable model semantics KW - loop formulas KW - unfounded sets Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-413091 SN - 1866-8372 IS - 566 ER - TY - GEN A1 - Guerrero, Martín A. A1 - Chu, You-Hua A1 - Hamann, Wolf-Rainer A1 - Oskinova, Lida A1 - Schönberner, Detlef A1 - Todt, Helge Tobias A1 - Steffen, Matthias A1 - Ruiz, Nieves A1 - Gruendl, Robert A. A1 - Blair, William P. T1 - Ablation and wind mass-loading in the born-again planetary nebula A 30 T2 - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe N2 - We present XMM-Newton and Chandra observations of the born-again planetary nebula A 30. These X-ray observations reveal a bright unresolved source at the position of the central star whose X-ray luminosity exceeds by far the model expectations for photospheric emission and for shocks within the stellar wind. We suggest that a “born-again hot bubble” may be responsible for this X-ray emission. Diffuse X-ray emission associated with the petal-like features and one of the H-poor knots seen in the optical is also found. The weakened emission of carbon lines in the spectrum of the diffuse emission can be interpreted as the dilution of stellar wind by mass-loading or as the detection of material ejected during a very late thermal pulse. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 563 KW - planetary nebulae: individual (A 30) KW - X-rays: ISM Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-412341 SN - 1866-8372 IS - 563 ER - TY - CHAP A1 - Prengel, Annedore T1 - Zwischen Heterogenität und Hierarchie in der Bildung - Studien zur Unvollendbarkeit der Demokratie T2 - Bildung in der Demokratie II : Tendenzen - Diskurse - Praktiken Y1 - 2011 SN - 978-3-86649-373-5 SP - 83 EP - 94 PB - Budrich CY - Opladen ER - TY - GEN A1 - Gebser, Martin A1 - Schaub, Torsten H. A1 - Thiele, Sven A1 - Veber, Philippe T1 - Detecting inconsistencies in large biological networks with answer set programming T2 - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe N2 - We introduce an approach to detecting inconsistencies in large biological networks by using answer set programming. To this end, we build upon a recently proposed notion of consistency between biochemical/genetic reactions and high-throughput profiles of cell activity. We then present an approach based on answer set programming to check the consistency of large-scale data sets. Moreover, we extend this methodology to provide explanations for inconsistencies by determining minimal representations of conflicts. In practice, this can be used to identify unreliable data or to indicate missing reactions. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 561 KW - answer set programming KW - bioinformatics KW - consistency KW - diagnosis Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-412467 SN - 1866-8372 IS - 561 ER - TY - GEN A1 - Durzinsky, Markus A1 - Marwan, Wolfgang A1 - Ostrowski, Max A1 - Schaub, Torsten H. A1 - Wagler, Annegret T1 - Automatic network reconstruction using ASP T2 - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe N2 - Building biological models by inferring functional dependencies from experimental data is an important issue in Molecular Biology. To relieve the biologist from this traditionally manual process, various approaches have been proposed to increase the degree of automation. However, available approaches often yield a single model only, rely on specific assumptions, and/or use dedicated, heuristic algorithms that are intolerant to changing circumstances or requirements in the view of the rapid progress made in Biotechnology. Our aim is to provide a declarative solution to the problem by appeal to Answer Set Programming (ASP) overcoming these difficulties. We build upon an existing approach to Automatic Network Reconstruction proposed by part of the authors. This approach has firm mathematical foundations and is well suited for ASP due to its combinatorial flavor providing a characterization of all models explaining a set of experiments. The usage of ASP has several benefits over the existing heuristic algorithms. First, it is declarative and thus transparent for biological experts. Second, it is elaboration tolerant and thus allows for an easy exploration and incorporation of biological constraints. Third, it allows for exploring the entire space of possible models. Finally, our approach offers an excellent performance, matching existing, special-purpose systems. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 560 KW - regulatory networks KW - biological networks KW - answer Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-412419 SN - 1866-8372 IS - 560 ER - TY - GEN A1 - Gebser, Martin A1 - Kaminski, Roland A1 - Schaub, Torsten H. T1 - Complex optimization in answer set programming T2 - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe N2 - Preference handling and optimization are indispensable means for addressing nontrivial applications in Answer Set Programming (ASP). However, their implementation becomes difficult whenever they bring about a significant increase in computational complexity. As a consequence, existing ASP systems do not offer complex optimization capacities, supporting, for instance, inclusion-based minimization or Pareto efficiency. Rather, such complex criteria are typically addressed by resorting to dedicated modeling techniques, like saturation. Unlike the ease of common ASP modeling, however, these techniques are rather involved and hardly usable by ASP laymen. We address this problem by developing a general implementation technique by means of meta-prpogramming, thus reusing existing ASP systems to capture various forms of qualitative preferences among answer sets. In this way, complex preferences and optimization capacities become readily available for ASP applications. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 554 KW - answer set programming KW - preference handling KW - complex optimization KW - meta-programming Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-412436 SN - 1866-8372 IS - 554 ER - TY - GEN A1 - Geiß, Robin A1 - Siegrist, Michael T1 - Has the armed conflict in Afghanistan affected the rules on the conduct of hostilities? T2 - Postprints der Universität Potsdam Rechtswissenschaftliche Reihe N2 - The armed conflict in Afghanistan since 2001 has raised manifold questions pertaining to the humanitarian rules relative to the conduct of hostilities. In Afghanistan, as is often the case in so-called asymmetric conflicts, the geographical and temporal boundaries of the battlefield, and the distinction between civilians and fighters, are increasingly blurred. As a result, the risks for both civilians and soldiers operating in Afghanistan are high. The objective of this article is to assess whether - and if so how much - the armed conflict in Afghanistan has affected the application and interpretation of the principles of distinction, proportionality, and precaution - principles that form the core of legal rules pertaining to the conduct of hostilities. T3 - Zweitveröffentlichungen der Universität Potsdam : Rechtswissenschaftliche Reihe - 4 Y1 - 2019 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-412896 IS - 4 ER - TY - BOOK ED - Kosta, Peter ED - Schürcks, Lilia T1 - Formalization of Grammar in Slavic Languages BT - Contributions of the Eighth International Conference on Formal Description of Slavic Languages - FDSL VIII 2009 University of Potsdam, December 2-5, 2009 T3 - Potsdam Linguistic Investigations Y1 - 2011 SN - 978-3-631-61869-1 VL - 6 PB - Peter Lang CY - Frankfurt am Main ER - TY - GEN A1 - Ette, Ottmar T1 - Urbanity and literature BT - cities as transareal spaces of movement in Assia Djebar, Emine Sevgi Ozdamar and Cecile Wajsbrot T2 - European Review N2 - Transarea studies focus upon spaces as created by the movements that criss-cross them. From this point of view, from its very beginnings, literature is closely interrelated with a vectorial (and much less with a purely spatial) conception of history - and with urbanity, which plays a decisive role in Gilgamesh's travels through a (narrative) cosmos centered upon the city of Uruk. This article explores the city as a transareal space of movement in three examples of literature, with no fixed abode, around the turn of the millennium, i.e. Assia Djebar's Les Nuits de Strasbourg, Emine Sevgi Oezdamar's Istanbul-Berlin Trilogy, and Cecile Wajsbrot's L'ile aux musees. These three writers project, in a very specific way, cities in motion as anagrammatic and fractal structures. T3 - Zweitveröffentlichungen der Universität Potsdam : Philosophische Reihe - 145 Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-413767 ER - TY - GEN A1 - Todt, Helge Tobias A1 - Peña, Miriam A1 - Zühlke, Julia A1 - Oskinova, Lida A1 - Hamann, Wolf-Rainer A1 - Gräfener, Götz T1 - Weak emission line central stars of planetary nebulae T2 - Planetary Nebulae: an Eye to the Future N2 - To understand the evolution and morphology of planetary nebulae, a detailed knowledge of their central stars is required. Central stars that exhibit emission lines in their spectra, indicating stellar mass-loss allow to study the evolution of planetary nebulae in action. Emission line central stars constitute about 10 % of all central stars. Half of them are practically hydrogen-free Wolf-Rayet type central stars of the carbon sequence, [WC], that show strong emission lines of carbon and oxygen in their spectra. In this contribution we address the weak emission-lines central stars (wels). These stars are poorly analyzed and their hydrogen content is mostly unknown. We obtained optical spectra, that include the important Balmer lines of hydrogen, for four weak emission line central stars. We present the results of our analysis, provide spectral classification and discuss possible explanations for their formation and evolution. T3 - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 462 KW - stars: AGB and post-AGB KW - stars: Wolf-Rayet KW - stars: abundances Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-413775 ER - TY - JOUR A1 - Stadler, Heike T1 - Der Bürger entscheidet mit BT - die Bibliothek als Diskussionsgegenstand zwischen Politik, Kommunalverwaltung und Bürgerschaft JF - BuB : Forum für Bibliothek und Information 63 (2011) 6 N2 - »Warum erregt der geplante Abriss eines Bahnhofs die Nation, während gegen das hundertfache Sterben von Bibliotheken immer nur ein paar Stimmen laut werden? Wo sind die Wutbürger, wenn man sie braucht?«, überlegte sich hierzulande Tilman Spreckelsen.1 Die Kernfrage lautet also: Stehen die Bürger eigentlich hinter der Bibliothek? Ob und wie die Bürgerschaft für ihre Öffentliche Bibliothek entscheidet, wenn sie entscheiden darf, wird im vorliegenden Aufsatz thematisiert. Ergebnisse von Bürgerbegehren und Bürgerentscheiden stehen dabei im Fokus, da bürgerschaftliches Engagement bei diesen Mitwirkungsinstrumenten besonders gefragt ist und es gleichzeitig kommunalpolitische Folgen haben kann. Am Beispiel von Stuttgart 21 wird darüber hinaus der Fragestellung nachgegangen, wie sich eine Öffentliche Bibliothek zu Sachverhalten positioniert, die (nicht nur) kommunalpolitisch brisant sind. Y1 - 2011 UR - www.b-u-b.de/pdfarchiv/Register-BuB_2011.pdf VL - 63 IS - 6 SP - 450 EP - 453 PB - Bock + Herchen CY - Bad Honnef ER - TY - JOUR A1 - Stadler, Heike T1 - Mehr Chancen als Risiken BT - Öffentliche Bibliotheken im Bürgerhaushalt : Positive Beispiele in Berlin JF - BuB : Forum für Bibliothek und Information 63 (2011) 3 N2 - Anne Christensen spricht von partizipativer Entwicklung, wenn sie sich zum Komplex Bibliothek 2.0 äußert, und meint damit primär die stärkere Einbeziehung der Benutzer, wenn es um die Zukunft der kollaborativen Erschließung von Medien in Bibliothekskatalogen geht.1 Diese Art der Partizipation tangiert Kernaufgaben sowohl an Öffentlichen als auch an wissenschaftlichen Bibliotheken. Über die Beteiligung der Benutzer am Katalog 2.0 hinaus könnte auch durch eine weitere Form der Partizipation Einfl uss auf die Zukunft Öffentlicher Bibliotheken genommen werden: durch den Bürgerhaushalt. Y1 - 2011 UR - www.b-u-b.de/pdfarchiv/Heft-BuB_03_2011.pdf VL - 63 IS - 3 SP - 196 EP - 199 PB - Bock + Herchen CY - Bad Honnef ER - TY - JOUR A1 - Stadler, Heike T1 - Porto Alegre und Christchurch als Vorbild BT - Der Bürgerhaushalt wird weltweit angewendet : Dynamische Entwicklung in Europa JF - BuB : Forum für Bibliothek und Information 63 (2011) 3 Y1 - 2011 UR - www.b-u-b.de/pdfarchiv/Heft-BuB_03_2011.pdf VL - 63 IS - 3 SP - 197 PB - Bock + Herchen CY - Bad Honnef ER - TY - BOOK ED - Klettke, Cornelia ED - Pröve, Ralf T1 - Brennpunkte kultureller Begegnungen auf dem Weg zu einem modernen Europa : Identitäten und Alteritäten eines Kontinents BT - Akten der Ringvorlesung der Philosophischen Fakultät der Universität Potsdam anlässlich der Gründung des Frühneuzeitzentrums Potsdam im Sommersemester 2010 KW - Europa KW - Kulturelle Identität KW - Geschichte 1500-1850 KW - Aufsatzsammlung Y1 - 2011 SN - 978-3-89971-877-5 (print) SN - 978-3-86234-877-0 (epub) PB - V & R Unipress CY - Göttingen ER - TY - JOUR A1 - Balderjahn, Ingo A1 - Oloko, Shamsey T1 - On the Moral Value of Cause related Marketing JF - Marketing : ZFP Y1 - 2011 SN - 0344-1369 VL - 33 IS - 2 SP - 159 EP - 170 PB - C. H. Beck CY - München ER - TY - BOOK A1 - Balderjahn, Ingo A1 - Specht, Günter T1 - Einführung in die Betriebswirtschaftslehre N2 - Basiswissen BWL – prägnant und verständlich vermittelt. Das Lehrbuch vermittelt Wirtschaftswissenschaftlern, angehenden Wirtschaftsingenieuren und -informatikern sowie Nebenfachstudierenden aus dem technischen Bereich die wichtigsten Grundlagen der BWL. Die 6. Auflage wurde umfassend überarbeitet, an die aktuelle Gesetzeslage angepasst und inhaltlich erweitert. Lernziele, Beispiele, Kontrollfragen und Aufgaben inklusive Lösungen erleichtern das selbstständige Lernen. Das optimierte Layout sorgt für mehr Übersichtlichkeit. Y1 - 2011 SN - 978-3-7910-3096-8 PB - Schäffer-Poeschel CY - Stuttgart ET - 6 ER - TY - JOUR A1 - Müller, Hans-Georg T1 - The development of spelling skills in writing test an empirical study into class 1 to 4 JF - Zeitschrift für Sprachwissenschaft Y1 - 2011 SN - 0721-9067 VL - 30 IS - 2 SP - 305 EP - 309 PB - De Gruyter Mouton CY - Berlin ER - TY - JOUR A1 - Heinz, Kathrin A1 - Heidenreich, Thomas A1 - Wenhold, Franziska A1 - Brand, Ralf T1 - Mindfulness and acceptance basic principles and perspectives of a new approach in sport psychology training JF - Zeitschrift für Sportpsychologie N2 - Mindfulness and acceptance describe the skills necessary to experience emotions and thoughts (e.g., performance-interfering cognitions) consciously and without judging them. This article introduces the mindfulness and acceptance approach and its potential in the context of competitive sports. Definitions as well as research results related to mechanisms of action and differential psychological aspects are given and the efficacy of the approach in the field of clinical psychology is reviewed. The rationale and implementation of the mindfulness-acceptance-commitment approach, an approach adapted for performance enhancement, is illustrated. Finally, evidence from psychotherapy research is presented, and a recommendation for the use of mindfulness and acceptance in the context of competitive sports is given. KW - mindfulness KW - acceptance KW - psychological skills training Y1 - 2011 U6 - https://doi.org/10.1026/1612-5010/a000056 SN - 1612-5010 VL - 18 IS - 4 SP - 145 EP - 154 PB - Hogrefe CY - Göttingen ER - TY - JOUR A1 - Ehrlenspiel, Felix A1 - Graf, Karla A1 - Kühn, Christian A1 - Brand, Ralf T1 - Stability and variability of competitive anxiety JF - Zeitschrift für Sportpsychologie N2 - Spielberger's (1972) Trait-State-Anxiety theory distinguishes between anxiety as a trait (A-trait) - involving a stable characteristic of a person to react with anxiety in response to varying situations and anxiety as a state (A-state), a situation-dependent reaction to a stimulus perceived as threatening. Using a general instead of a sport-specific measure, a previous study provided only mixed support for core predictions of the theory as related to sports (Schwenkmezger, 1985). With the aid of enhanced instruments and statistical methods, we tested these predictions again. The multidimensional and competition-specific assessment of anxiety results in support for the assumption of a stable A-trait and a fluctuating A-state, whereby the A-trait not only predicts the intensity of A-states but also the A-state variability. The repeated assessment of A-states prior to two competitions reveals a rather low relative consistency (i.e., interindividual differences across measurements were only moderately stable). Especially this latter finding suggests that, in order to gain a full understanding of the experience of competitive anxiety in athletes, sport psychologists should not only assess competitive A-traits, but also repeatedly measure competitive A-states. KW - competitive state anxiety KW - competitive trait anxiety KW - Trait-State Interaction Model Y1 - 2011 U6 - https://doi.org/10.1026/1612-5010/a000034 SN - 1612-5010 VL - 18 IS - 1 SP - 31 EP - 43 PB - Hogrefe CY - Göttingen ER - TY - JOUR A1 - Kossack, Peter T1 - Discourse analysis meets governmentality research perspectives on the relationship of subject. language, power and knowledge JF - Zeitschrift für Soziologie der Erziehung und Sozialisation Y1 - 2011 SN - 1436-1957 VL - 31 IS - 3 SP - 328 EP - 329 PB - Juventa-Verl. CY - Weinheim ER - TY - JOUR A1 - Höppner, Till T1 - Kant's Notion of the function and the completeness of the ruling class and blackboard JF - Zeitschrift für philosophische Forschung : Abhandlungen, Diskussionen und Berichte Y1 - 2011 SN - 0044-3301 VL - 65 IS - 2 SP - 193 EP - 240 PB - Klostermann CY - Frankfurt, Main ER - TY - JOUR A1 - Kampa, Nele A1 - Kunter, Mareike A1 - Maaz, Kai A1 - Baumert, Jürgen T1 - The social background of maths teachers in Germany its connection with professional occupation and job-related convictions among teachers at secondary schools JF - Zeitschrift für Pädagogik N2 - The present article analyzes the socio-economic background of maths teachers in Germany and its relation to career-related decisions and job-related convictions. These analyzes is based on data collected through questionnaires answered by 1126 maths teachers working at a sample of secondary schools representative of Germany. Following Bourdieu's theory, the authors examine whether the economic and cultural conditions prevailing in the teachers' families of origin are related to their decision to pursue this specific professional career or to their job-related convictions. Furthermore, it is analyzed in how far teachers, in their everyday work in the classroom, meet students from groups of origin foreign to the teachers themselves. The results show that the teachers, socio-economic background has no systematic relation to either their career-related decisions or their job-related convictions. Y1 - 2011 SN - 0044-3247 VL - 57 IS - 1 SP - 70 EP - 92 PB - Beltz CY - Weinheim ER - TY - JOUR A1 - Wessig, Pablo A1 - Möllnitz, Kristian A1 - Kelling, Alexandra A1 - Schilde, Uwe T1 - Crystal structure of 1r,2c,3c,4t,5t,6t-1,2,3,4,5,6-hexakis-trimethylsilanyloxy-cyclohexane, C24H60O6Si6 JF - Zeitschrift für Kristallographie : international journal for structural, physical and chemical aspects of crystalline materials ; New crystal structures N2 - C24H60O6Si6, triclinic, P (1) over bar (no. 2), a = 11.307(2) angstrom, b = 12.159(2) angstrom, = 16.576(2) angstrom, alpha = 109.47(1)degrees, beta = 94.64(1)degrees, gamma = 111.65(1)degrees, V = 1942.3 angstrom(3), Z = 2, R-gt(F) = 0.043, wR(ref)(F-2) = 0.118, T = 210 K. Y1 - 2011 U6 - https://doi.org/10.1524/ncrs.2011.0105 SN - 1433-7266 VL - 226 IS - 2 SP - 228 EP - 230 PB - De Gruyter Oldenbourg CY - München ER - TY - JOUR A1 - Kahlert, Daniela A1 - Brand, Ralf T1 - Questionnaires for assessing physical activity different response scale categories influence responses concerning health- and sport-related cognitions JF - Zeitschrift für Gesundheitspsychologie N2 - The present study examines whether the use of different frequency scales in questionnaires about physical activity influences respondents' own estimation of their activity, as well as subsequent measurements of health- und sport-related cognitions and evaluations. Using a randomized research design we recruited a sample of 118 participants. One group received a high frequency scale for assessing their exercise frequency with the response categories "never", "less often", "once a month", "once a week", or "most days." The other group answered with a medium frequency scale with the alternatives "never", "less often", " once every few months", "once a month", and " once a week or more often." As dependent variables all participants judged the subjective importance of physical activity and their health-related quality of life (WHO-QOL-bref). Results indicate the expected response errors, owing to the fact that using a high-frequency scale produces higher levels of self-reported physical activity (Cramer's V = .30). Corresponding to this the subjective importance of physical activity increased (d = .37) and the health-related quality of life was judged to be better (d = .36). Such artefacts might be eliminated by using standardized formulations such as "I exercise... times per week/month for... minutes." KW - physical activity KW - measurement KW - health-related cognition KW - response error Y1 - 2011 U6 - https://doi.org/10.1026/0943-8149/a000044 SN - 0943-8149 VL - 19 IS - 2 SP - 96 EP - 100 PB - Hogrefe CY - Göttingen ER - TY - JOUR A1 - Kürbis, Holger T1 - Peace of the Pyrenees 1659 history, response, reception history JF - Deutsche Zeitschrift für Geschichtswissenschaft Y1 - 2011 SN - 0044-2828 VL - 59 IS - 12 SP - 1074 EP - 1075 PB - Metropol-Verl. CY - Berlin ER - TY - JOUR A1 - Botsch, Gideon T1 - Elections in Europe a data Handbook JF - Deutsche Zeitschrift für Geschichtswissenschaft Y1 - 2011 SN - 0044-2828 VL - 59 IS - 10 SP - 869 EP - 871 PB - Metropol-Verl. CY - Berlin ER - TY - JOUR A1 - Botsch, Gideon T1 - Nazi criminals and citizens of the federal Republic the example of Dr. Gerhard Klopfer JF - Deutsche Zeitschrift für Geschichtswissenschaft Y1 - 2011 SN - 0044-2828 VL - 59 IS - 4 SP - 389 EP - 390 PB - Metropol-Verl. CY - Berlin ER - TY - JOUR A1 - Botsch, Gideon T1 - Perpetrators - Helper- Free Riders Nazi loaded from the Eastern Swabian JF - Deutsche Zeitschrift für Geschichtswissenschaft Y1 - 2011 SN - 0044-2828 VL - 59 IS - 4 SP - 389 EP - 390 PB - Metropol-Verl. CY - Berlin ER - TY - JOUR A1 - Krüger, Brigitte T1 - Dialogue with strangers memories of the 'European East' in the lyrics of Johannes Bobrowski JF - Zeitschrift für Germanistik Y1 - 2011 SN - 0323-7982 VL - 21 IS - 2 SP - 413 EP - 415 PB - Lang CY - Bern ER - TY - JOUR A1 - Zacke, Birgit T1 - Rhythm of the images narrative strategies in text and image products of the eleventh and thirteenth century JF - Zeitschrift für Germanistik Y1 - 2011 SN - 0323-7982 VL - 21 IS - 1 SP - 175 EP - 176 PB - Lang CY - Bern ER - TY - GEN A1 - Stockhorst, Stefanie T1 - Friedrich Nicolai (1733-1811). - on the two hundreth Anniversary of the Berlin Enlightenment writer and bookseller has works published T2 - Zeitschrift für Germanistik Y1 - 2011 SN - 0323-7982 VL - 21 IS - 1 SP - 153 EP - 159 PB - Lang CY - Bern ER - TY - JOUR A1 - Stockhorst, Stefanie T1 - Signals from the past forms and functions of the traditional behavior in Thomas Kling's essay JF - Zeitschrift für Germanistik Y1 - 2011 U6 - https://doi.org/10.3726/92132_114 SN - 0323-7982 VL - 21 IS - 1 SP - 114 EP - 130 PB - Lang CY - Bern ER - TY - JOUR A1 - Krahé, Barbara T1 - Pornography use, sexual scripts, and sexual aggression in adolescence JF - Zeitschrift für Entwicklungspsychologie und pädagogische Psychologie N2 - The link between pornography use, normative acceptance of sexual aggression, and the presence of risk factors of sexual aggression in sexual scripts for consensual sexual interactions was studied in a sample of 197 adolescents in Germany. Risk factors included sex after only a short acquaintanceship, alcohol and drug use in sexual interactions, and ambiguous communication of sexual intentions. In addition to a measure of overall pornography use, exposure to portrayals of consensual sex, coerced sex and degrading sex was measured. Almost all participants had seen pornografic material at least once, just under half had seen depictions of coerced sex. Significant correlations were found between all measures of pornography use and the presence of risk factors of sexual aggression in consensual sexual scripts. Violent pornography usage showed a positive correlation with the normative acceptance of sexual aggression that was partly accounted for by sexual scripts. The findings are discussed with regard to the significance of pornografic media contents in the process of adolescents' sexual socialization. KW - pornography KW - violent pornography KW - sexual scripts KW - adolescent sexuality Y1 - 2011 U6 - https://doi.org/10.1026/0049-8637/a000044 SN - 0049-8637 VL - 43 IS - 3 SP - 133 EP - 141 PB - Hogrefe CY - Göttingen ER - TY - JOUR A1 - Priewe, Marc T1 - Prospero's America: John Winthrop, Jr., Alchemy, and the Creation of New England Culture, 1606-1676 JF - Zeitschrift für Anglistik und Amerikanistik : a quarterly of language, literature and cultur Y1 - 2011 SN - 0044-2305 VL - 59 IS - 2 SP - 199 EP - 200 PB - Königshausen & Neumann CY - Würzburg ER - TY - JOUR A1 - Stecker, Christian T1 - Linking citizens and parties how electoral systems matter for political representation JF - West European politics Y1 - 2011 U6 - https://doi.org/10.1080/01402382.2011.616673 SN - 0140-2382 VL - 34 IS - 6 SP - 1316 EP - 1317 PB - Routledge, Taylor & Francis Group CY - Abingdon ER - TY - JOUR A1 - Spies, Dennis A1 - Franzmann, Simon T. T1 - A two-dimensional approach to the political opportunity structure of extreme right parties in Western Europe JF - West European politics N2 - Previous studies on the electoral fortunes of extreme right parties (ERPs) have pointed to the importance of variables of party competition for the success - or failure - of ERPs. These studies vary greatly when it comes to describing the political opportunity structure of the extreme right. Apart from their methodological differences, existing studies differ especially with regard to the assumed underlying dimension of party competition. This article tests the impact of three frequently discussed variables in the political opportunity structure of ERPs (mainstream party convergence, position of the established right and party system polarisation) on the vote share of ERPs in Western Europe. In addition to examining previous studies in this field, it focuses on the interplay between the economic and the cultural dimensions as part of the political opportunity structure. The authors show that a decrease in polarisation with regard to economic questions is accompanied by a growing salience of ERPs' core issues, leading in the end to an increase in ERPs' vote share. Y1 - 2011 U6 - https://doi.org/10.1080/01402382.2011.591096 SN - 0140-2382 VL - 34 IS - 5 SP - 1044 EP - 1069 PB - Routledge, Taylor & Francis Group CY - Abingdon ER - TY - JOUR A1 - Akal, Cuneyt A1 - Koralay, O. Ersin A1 - Candan, Osman A1 - Oberhänsli, Roland A1 - Chen, Fukun T1 - Geodynamic significance of the early triassic karaburun granitoid (Western Turkey) for the opening history of Neo-Tethys JF - Turkish journal of earth sciences = Türk yerbilimleri dergisi N2 - The Karaburun Peninsula, which is considered part of the Anatolide-Tauride Block of Turkey, contains clastic and carbonate sequences deposited on the northern margin of Gondwana. The Palaeozoic clastic sequence, which is intruded by the Early Triassic granitoid and tectonically overlies a Mesozoic melange sequence, can be divided into three subunits: a lower clastic subunit consisting of a sandstone-shale alternation, an upper clastic subunit consisting of black chert-bearing shales, sandstone and conglomerate, and a Permo-Carboniferous carbonate subunit. The lower Triassic Karaburun I-type granitoid has a high initial Sr-87/Sr-86 ratio (0.709021-0.709168), and low Nd-143/Nd-144 ratio (0.512004-0.512023) and epsilon Nd (-5.34 to -5.70) isotopic values. Geochronological data indicate a crystallization (intrusion) age of 247.1 +/- 2.0 Ma (Scythian). Geochemically, the acidic magmatism reflects a subduction-related continental-arc basin tectonic setting, which can be linked to the opening of the northern branch of Neo-Tethys as a continental back-arc rifting basin on the northern margin of Gondwana. This can be related to the closure through southward subduction of the Palaeotethys Ocean beneath Gondwana. KW - Karaburun KW - Neo-Tethys KW - Palaeo-Tethys KW - diorite KW - Triassic KW - magmatism Y1 - 2011 U6 - https://doi.org/10.3906/yer-1008-1 SN - 1300-0985 VL - 20 IS - 3 SP - 255 EP - 271 PB - Tübitak CY - Ankara ER - TY - JOUR A1 - David Coy, Ericsson A1 - Enrique Cuca, Luis A1 - Sefkow, Michael T1 - Pd-NHC catalyzed biaryl coupling by direct C-H Activation-A Novel strategy for the synthesis of dibenzocyclooctane lignans JF - Synthetic communications : an international journal for rapid communication of synthetic organic chemistry N2 - Cross-coupling reactions, such as Buchwald-Hartwig arylamination and direct intramolecular biaryl coupling by C-H activation, were carried out using various Palladium-N-heterocyclic carbenes (Pd-NHC) as catalysts. The yields were good to excellent. The latter strategy was adopted to transform two dibenzylbutane lignans, isolated from the leaves of Ocotea macrophylla (Lauraceae), into the corresponding dibenzocyclooctane lignans in good overall yields. Supplemental materials are available for this article. Go to the publisher's online edition of Synthetic Communications (R) to view the free supplemental file. KW - Cross-coupling reactions KW - dibenzylbutane KW - dibenzocyclooctane KW - lignans KW - N-heterocyclic carbenes (NHC) Y1 - 2011 U6 - https://doi.org/10.1080/00397910903531755 SN - 0039-7911 VL - 41 IS - 1 SP - 41 EP - 51 PB - Taylor & Francis Group CY - Philadelphia ER - TY - JOUR A1 - Feher, Kristen A1 - Whelan, James A1 - Müller, Samuel T1 - Assessing modularity using a random matrix theory approach JF - Statistical applications in genetics and molecular biology N2 - Random matrix theory (RMT) is well suited to describing the emergent properties of systems with complex interactions amongst their constituents through their eigenvalue spectrums. Some RMT results are applied to the problem of clustering high dimensional biological data with complex dependence structure amongst the variables. It will be shown that a gene relevance or correlation network can be constructed by choosing a correlation threshold in a principled way, such that it corresponds to a block diagonal structure in the correlation matrix, if such a structure exists. The structure is then found using community detection algorithms, but with parameter choice guided by RMT predictions. The resulting clustering is compared to a variety of hierarchical clustering outputs and is found to the most generalised result, in that it captures all the features found by the other considered methods. KW - random matrix theory KW - clustering KW - modularity Y1 - 2011 U6 - https://doi.org/10.2202/1544-6115.1667 SN - 2194-6302 SN - 1544-6115 VL - 10 IS - 1 PB - De Gruyter CY - Berlin ER - TY - JOUR A1 - Bressel, Katharina A1 - Prevost, Sylvain A1 - Appavou, Marie-Sousai A1 - Tiersch, Brigitte A1 - Koetz, Joachim A1 - Gradzielski, Michael T1 - Phase behaviour and structure of zwitanionic mixtures of perfluorocarboxylates and tetradecyldimethylamine oxide-dependence on chain length of the perfluoro surfactant JF - Soft matter N2 - Phase behaviour and the mesoscopic structure of zwitanionic surfactant mixtures based on the zwitterionic tetradecyldimethylamine oxide (TDMAO) and anionic lithium perfluoroalkyl carboxylates have been investigated for various chain lengths of the perfluoro surfactant with an emphasis on spontaneously forming vesicles. These mixtures were studied at a constant total concentration of 50 mM and characterised by means of dynamic light scattering (DLS), electric conductivity, small-angle neutron scattering (SANS), viscosity, and cryo-scanning electron microscopy (Cryo-SEM). No vesicles are formed for relatively short perfluoro surfactants. The extension of the vesicle phase becomes substantially larger with increasing chain length of the perfluoro surfactant, while at the same time the size of these vesicles increases. Head group interactions in these systems play a central role in the ability to form vesicles, as already protonating 10 mol% of the TDMAO largely enhances the propensity for vesicle formation. The range of vesicle formation in the phase diagram is not only substantially enlarged but also extends to shorter perfluoro surfactants, where without protonation no vesicles would be formed. The size and polydispersity of the vesicles are related to the chain length of the perfluoro surfactant, the vesicles becoming smaller and more monodisperse with increasing perfluoro surfactant chain length. The ability of the mixed systems to form well-defined unilamellar vesicles accordingly can be controlled by the length of the alkyl chain of the perfluorinated surfactant and depends strongly on the charge conditions, which can be tuned easily by pH-variation. Y1 - 2011 U6 - https://doi.org/10.1039/c1sm05618b SN - 1744-683X VL - 7 IS - 23 SP - 11232 EP - 11242 PB - Royal Society of Chemistry CY - Cambridge ER - TY - JOUR A1 - Sangoro, J. R. A1 - Iacob, C. A1 - Naumov, S. A1 - Valiullin, R. A1 - Rexhausen, Hans A1 - Hunger, J. A1 - Buchner, R. A1 - Strehmel, Veronika A1 - Kaerger, J. A1 - Kremer, F. T1 - Diffusion in ionic liquids the interplay between molecular structure and dynamics JF - Soft matter N2 - Diffusion in a series of ionic liquids is investigated by a combination of Broadband Dielectric Spectroscopy (BDS) and Pulsed Field Gradient Nuclear Magnetic Resonance (PFG NMR). It is demonstrated that the mean jump lengths increase with the molecular volumes determined from quantum-chemical calculations. This provides a direct means-via Einstein-Smoluchowski relation-to determine the diffusion coefficient by BDS over more than 8 decades unambiguously and in quantitative agreement with PFG NMR measurements. New possibilities in the study of charge transport and dynamic glass transition in ionic liquids are thus opened. Y1 - 2011 U6 - https://doi.org/10.1039/c0sm01404d SN - 1744-683X VL - 7 IS - 5 SP - 1678 EP - 1681 PB - Royal Society of Chemistry CY - Cambridge ER - TY - JOUR A1 - Weiss, Jan A1 - Böttcher, Christoph A1 - Laschewsky, André T1 - Self-assembly of double thermoresponsive block copolymers end-capped with complementary trimethylsilyl groups JF - Soft matter N2 - A set of double thermoresponsive diblock copolymers poly(N-n-propylacrylamide)-block-poly(N-ethylacrylamide) (PNPAM-b-PNEAM) was synthesised by sequential reversible addition-fragmentation chain transfer (RAFT) polymerisations. Using a twofold trimethylsilyl (TMS)-labeled RAFT-agent, the relative size of the two blocks was varied. While soluble as unimers below 15 degrees C, all copolymers exhibited thermally induced two-step self-assembly in water, due to distinct lower critical solution temperature (LCST) phase transitions of PNPAM (around 20 degrees C) and PNEAM (around 70 degrees C). Their temperature-dependent self-organisation in dilute aqueous solution was studied by turbidimetry, dynamic light scattering, transmission electron microscopy, and (1)H NMR spectroscopy. The copolymers show distinct, two-step self-organisation behaviour with respect to transition temperatures, aggregate type and size, which can be correlated to the relative lengths of the low and high LCST blocks. For polymers having short blocks with low LCST, the first thermal transition induces the formation of individual micelles. Further heating above the second thermal transition results reversibly either in a shrink of the micelle size or in aggregation of the micelles, with hydrodynamic diameters below 250 nm. In contrast in the case of polymers having a long block with low LCST, the first thermal transition already leads to clusters of micelles, while the second thermal transition makes the clusters shrink. Noteworthy, the twofold TMS-labeled end groups report not only on the molar masses of the polymers, but can simultaneously serve as NMR-probes for the self-assembly process. The signal of the TMS-aryl end group displays a reversible temperature dependent, two-step splitting that is indicative of the self-organisation of the block copolymers. Y1 - 2011 U6 - https://doi.org/10.1039/c0sm00531b SN - 1744-683X VL - 7 IS - 2 SP - 483 EP - 492 PB - Royal Society of Chemistry CY - Cambridge ER - TY - JOUR A1 - Stoyanov, Hristiyan A1 - Kollosche, Matthias A1 - Risse, Sebastian A1 - McCarthy, Denis N. A1 - Kofod, Guggi T1 - Elastic block copolymer nanocomposites with controlled interfacial interactions for artificial muscles with direct voltage control JF - Soft matter N2 - Soft, physically crosslinking, block copolymer elastomers were filled with surface-treated nanoparticles, in order to evaluate the possibility for improvement of their properties when used as soft dielectric actuators. The nanoparticles led to improvements in dielectric properties, however they also reinforced the elastomer matrix. Comparing dielectric spectra of composites with untreated and surface-treated particles showed a measurable influence of the surface on the dielectric loss behaviour for high filler amounts, strongly indicating an improved host-guest interaction for the surface-treated particles. Breakdown strength was measured using a test bench and was found to be in good agreement with the results from the actuation measurements. Actuation responses predicted by a model for prestrained actuators agreed well with measurements up to a filler amount of 20%(vol). Strong improvements in actuation behaviour were observed, with an optimum near 15%(vol) nanoparticles, corresponding to a reduction in electrical field of 27% for identical actuation strains. The use of physically crosslinking elastomer ensured the mechanical properties of the matrix elastomer were unchanged by nanoparticles effecting the crosslinking reaction, contrary to similar experiments performed with chemically crosslinking elastomers. This allows for a firm conclusion about the positive effects of surface-treated nanoparticles on actuation behavior. Y1 - 2011 U6 - https://doi.org/10.1039/c0sm00715c SN - 1744-683X SN - 1744-6848 VL - 7 IS - 1 SP - 194 EP - 202 PB - Royal Society of Chemistry CY - Cambridge ER - TY - JOUR A1 - Sorge, Arndt T1 - Too big to fail the inside story of how wall street and washington fought to save the financial system from crisis-and themselves JF - Socio-economic review KW - financial crisis KW - financial institutions KW - financial markets KW - capitalism KW - globalization Y1 - 2011 SN - 1475-1461 VL - 9 IS - 1 SP - 169 EP - 186 PB - Oxford Univ. Press CY - Oxford ER - TY - JOUR A1 - Sorge, Arndt T1 - This time is different eight centuries of financial folly JF - Socio-economic review KW - financial crisis KW - financial institutions KW - financial markets KW - capitalism KW - globalization Y1 - 2011 SN - 1475-1461 VL - 9 IS - 1 SP - 169 EP - 186 PB - Oxford Univ. Press CY - Oxford ER - TY - JOUR A1 - Sorge, Arndt T1 - How markets fail the logic of economic calamities JF - Socio-economic review KW - financial crisis KW - financial institutions KW - financial markets KW - capitalism KW - globalization Y1 - 2011 SN - 1475-1461 VL - 9 IS - 1 SP - 169 EP - 186 PB - Oxford Univ. Press CY - Oxford ER - TY - JOUR A1 - Sorge, Arndt T1 - A failure of capitalism the crisis of '08 and the descent into depression JF - Socio-economic review KW - financial crisis KW - financial institutions KW - financial markets KW - capitalism KW - globalization Y1 - 2011 SN - 1475-1461 VL - 9 IS - 1 SP - 169 EP - 186 PB - Oxford Univ. Press CY - Oxford ER - TY - JOUR A1 - Dimitrova, Ilinka A1 - Koppitz, Jörg T1 - On the maximal regular subsemigroups of ideals of order-preserving or order-reversing transformations JF - Semigroup forum N2 - We characterize the maximal regular subsemigroups of the ideals of the semigroup of all order-preserving transformations as well as of the semigroup of all order-preserving or order-reversing transformations on a finite ordered set. KW - Transformation semigroups KW - Regular semigroups KW - Order-preserving transformations KW - Order-reversing transformations KW - Maximal subsemigroups Y1 - 2011 U6 - https://doi.org/10.1007/s00233-010-9272-8 SN - 0037-1912 VL - 82 IS - 1 SP - 172 EP - 180 PB - Springer CY - New York ER - TY - JOUR A1 - Kita-Tokarczyk, Katarzyna A1 - Junginger, Mathias A1 - Belegrinou, Serena A1 - Taubert, Andreas ED - Muller, AHE ED - Borisov, O T1 - Amphiphilic polymers at interfaces JF - Advances in polymer science JF - Advances in Polymer Science N2 - Self-assembly phenomena in block copolymer systems are attracting considerable interest from the scientific community and industry alike. Particularly interesting is the behavior of amphiphilic copolymers, which can self-organize into nanoscale-sized objects such as micelles, vesicles, or tubes in solution, and which form well-defined assemblies at interfaces such as air-liquid, air-solid, or liquid-solid. Depending on the polymer chemistry and architecture, various types of organization at interfaces can be expected, and further exploited for applications in nanotechnology, electronics, and biomedical sciences. In this article, we discuss the formation and characterization of Langmuir monolayers from various amphiphilic block copolymers, including chargeable and thus pH-responsivematerials. Solid-supported polymer films are reviewed in the context of alteration of surface properties by ultrathin polymer layers and the possibilities for application in tissue engineering, sensors and biomaterials. Finally, we focus on how organic and polymer monolayers influence the growth of inorganic materials. This is a truly biomimetic approach since Nature uses soft interfaces to control the nucleation, growth, and morphology of biominerals such as calcium phosphate, calcium carbonate, and silica. KW - Amphiphilic polymers KW - Langmuir monolayers KW - Polymers on surfaces KW - Bio-inspired mineralization Y1 - 2011 SN - 978-3-642-22297-9 U6 - https://doi.org/10.1007/12_2010_58 SN - 0065-3195 VL - 242 IS - 1 SP - 151 EP - 201 PB - Springer CY - Berlin ER - TY - JOUR A1 - Antoniou, Stella A1 - Pashalidis, I. A1 - Gessner, Andre A1 - Kumke, Michael Uwe T1 - The effect of humic acid on the formation and solubility of secondary solid phases (Nd(OH)CO3 and Sm(OH)CO3) JF - Radiochimica acta : international journal for chemical aspects of nuclear science and technology N2 - The formation of secondary Ln(III) solid phases (e.g. Nd(OH)CO3 and Sm(OH)CO3) has been studied as a function of the humic acid (HA) concentration in 0.1 M NaClO4 aqueous solution and their solubility has been investigated in the neutral pH range (6.5-8) under normal atmospheric conditions. Nd(III) and Sm(III) were selected as analogues for trivalent lanthanide and actinide ions. The solid phases under investigation have been prepared by alkaline precipitation and characterized by TGA, ATR-FTIR, XRD, TRLFS, DR-UV-Vis and Raman spectroscopy, and solubility measurements. The spectroscopic data obtained indicate that Nd(OH)CO3 and Sm(OH)CO3 are stable and remain the solubility limiting solid phases even in the presence of increased HA concentration (0.5 g/L) in solution. Upon base addition in the Ln(III)-HA system decomplexation of the previously formed Ln(III)-humate complexes and precipitation of two distinct phases occurs, the inorganic (Ln(OH)CO3) and the organic phase (HA), which is adsorbed on the particle surface of the former. Nevertheless, HA affects the particle size of the solid phases. Increasing HA concentration results in decreasing crystallite size of the Nd(OH)CO3 and increasing crystallite size of the Sm(OH)CO3 solid phase, and affects inversely the solubility of the solid phases. However, this impact on the solid phase properties is expected to be of minor relevance regarding the chemical behavior and migration of trivalent lanthanides and actinides in the geosphere. KW - Lanthanide ions KW - Humic acid KW - Solid phase KW - Solubility KW - Raman KW - TRLFS KW - DR-UV-Vis Y1 - 2011 U6 - https://doi.org/10.1524/ract.2011.1812 SN - 0033-8230 VL - 99 IS - 4 SP - 217 EP - 223 PB - De Gruyter CY - Berlin ER -