TY - JOUR A1 - Stuhrmann, Björn A1 - Huber, Florian A1 - Käs, Josef T1 - Robust organizational principles of protrusive biopolymer networks in migrating living cells JF - Plos One N2 - Cell migration is associated with the dynamic protrusion of a thin actin-based cytoskeletal extension at the cell front, which has been shown to consist of two different substructures, the leading lamellipodium and the subsequent lamellum. While the formation of the lamellipodium is increasingly well understood, organizational principles underlying the emergence of the lamellum are just beginning to be unraveled. We report here on a 1D mathematical model which describes the reaction-diffusion processes of a polarized actin network in steady state, and reproduces essential characteristics of the lamellipodium-lamellum system. We observe a steep gradient in filament lengths at the protruding edge, a local depolymerization maximum a few microns behind the edge, as well as a differential dominance of the network destabilizer ADF/cofilin and the stabilizer tropomyosin. We identify simple and robust organizational principles giving rise to the derived network characteristics, uncoupled from the specifics of any molecular implementation, and thus plausibly valid across cell types. An analysis of network length dependence on physico-chemical system parameters implies that to limit array treadmilling to cellular dimensions, network growth has to be truncated by mechanisms other than aging-induced depolymerization, e.g., by myosin-associated network dissociation at the transition to the cell body. Our work contributes to the analytical understanding of the cytoskeletal extension's bisection into lamellipodium and lamellum and sheds light on how cells organize their molecular machinery to achieve motility. KW - DOAJ Y1 - 2011 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-34901 SN - 1932-6203 N1 - Funding: This work has been supported by the Leipzig Graduate College ‘‘GK 1097 InterNeuro - Interdisciplinary Approaches in Cellular Neuroscience’’ (http:// www.uni-leipzig.de/˜ineuro/) and the Graduate School ‘‘Leipzig School of Natural Sciences - Building with Molecules and Nano-objects (BuildMoNa)’’ (http://www. buildmona.de/). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. VL - 6 IS - 1 PB - Public Library of Science (PLoS) ER - TY - JOUR A1 - Johanning, M. A1 - Braun, Alexander A1 - Eiteneuer, D. A1 - Paape, C. A1 - Balzer, C. A1 - Neuhauser, W. A1 - Wunderlich, C. T1 - Resonance-enhanced isotope-selective photoionization of YbI for ion trap loading JF - Applied Physics B Y1 - 2011 UR - https://arxiv.org/pdf/0712.0969.pdf U6 - https://doi.org/10.1007/s00340-011-4502-7 SN - 1432-0649 VL - 103 IS - 2 SP - 327 EP - 338 PB - Springer Nature ER - TY - GEN ED - Khabyuk, Olexiy ED - Kops, Manfred T1 - Public Service Broadcasting: A German-Ukrainian Exchange of Opinions Y1 - 2011 SN - 978-3-643-80094-7 VL - Kölner Schriften zur Medienökonomie PB - Lit-Verlag CY - Berlin ER - TY - CHAP A1 - Steffens, Jochen A1 - Küppers, Thomas A1 - Skoda, Sabrina T1 - Psychologische Einflussfaktoren bei der Beurteilung des Innengeräusches von Elektrofahrzeugen T2 - 5. DEGA-Symposium "E-Mobilität & Akustik": 21. Oktober 2011, Stuttgart Y1 - 2011 CY - Stuttgart ER - TY - JOUR A1 - Steffens, Jochen A1 - Küppers, Thomas A1 - Skoda, Sabrina T1 - Psychological factors influencing the evaluation of electric vehicle interior noise JF - Journal of the Acoustical Society of America N2 - Increasing global awareness of the benefits of electromobility has brought about the need for new concepts in terms of the acoustic design of future vehicle generations. This includes both the creative design process and the development of suitable methods for the evaluation of target sounds by trial participants. The main difference between e-car sound surveys and those carried out on familiar sound categories is the potential consumer’s lack of experience with electric vehicles. Thus the consumer has no, or very unspecific, expectations in this regard. Several studies have consequently shown that many subjects have to construct their personal frame of reference for evaluation within the listening experiment. However, this is possibly at odds with experience-based expectations relating to the sounds of conventional combustion engines. The result is a conflict of objectives between the traditional and the modern, familiarity and strangeness and not least between driving freedom and ecological awareness. In this context, the authenticity of the sound and the subjective interpretability of the sound information also appear as moderator variables. Moreover, associations with other vehicle categories, for example streetcars, also influence the perceived sound quality. In the course of this contribution, these factors will be expounded and their influence on the evaluation of interior noise discussed. KW - HB Y1 - 2011 U6 - https://doi.org/10.1121/1.3655176 VL - 130 IS - 4 PB - AIP ER - TY - CHAP A1 - Khabyuk, Olexiy ED - Khabyuk, Olexiy T1 - Protecting Public Service Broadcasting from State Intervention T2 - Public Service Broadcasting: A German-Ukrainian Exchange of Opinions Y1 - 2011 SN - 978-3-643-80094-7 SP - 67 EP - 74 PB - Lit-Verlag CY - Berlin ER - TY - CHAP A1 - Musall, Eike A1 - Voss, Karsten ED - Voss, Karsten ED - Musall, Eike T1 - Projekte und ihre Merkmale im Überblich - Teil 2 T2 - Nullenergiegebäude KW - Projektbeschreibung KW - Querschnittsauswertung Y1 - 2011 UR - https://www.degruyter.com/viewbooktoc/product/205283 SN - 978-3-920034-50-8 N1 - Zugriff via Campuslizenz SP - 114 EP - 119 PB - Detail, Institut für internationale Architektur-Dokumentation CY - München ER - TY - CHAP A1 - Musall, Eike A1 - Voss, Karsten ED - Voss, Karsten ED - Musall, Eike T1 - Projekte und ihre Merkmale im Überblich - Teil 1 T2 - Nullenergiegebäude KW - Projektbeschreibung KW - Querschnittsauswertung KW - Solarenergie KW - Sonnenschutz Y1 - 2011 SN - 978-3-920034-50-8 SP - 50 EP - 55 PB - Detail, Institut für internationale Architektur-Dokumentation CY - München ER - TY - CHAP A1 - Musall, Eike A1 - Voss, Karsten ED - Voss, Karsten ED - Musall, Eike T1 - Plusenergiesiedlung: Freiburg, D 2006 T2 - Nullenergiegebäude KW - Bilanzierung KW - Clusterung KW - Definitionsbeschreibung KW - Messdatenauswertung KW - Projektbeschreuibung KW - Solarenergie KW - Sonnenschutz KW - Verbrauchswerte Y1 - 2011 UR - https://www.degruyter.com/viewbooktoc/product/205283 SN - 978-3-920034-50-8 N1 - Zugriff via Campuslizenz SP - 94 EP - 99 PB - Detail, Institut für internationale Architektur-Dokumentation CY - München ER - TY - CHAP A1 - Zimmermann, Peter A1 - Çelik, Fatma A1 - Iwanski, Alexandra A1 - Mohr, C. A1 - Neumann, Anna ED - Renate, Walthes ED - Renate, Hinz T1 - Persönlichkeitsunterschiede und ihre Auswirkungen im schulischen Kontext T2 - Verschiedenheit als Diskurs Y1 - 2011 SN - 978-3-7720-8401-0 SP - 151 EP - 162 PB - Narr Francke Attempto CY - Tübingen ER - TY - CHAP A1 - Beckers, Kristian A1 - Schmidt, Holger A1 - Küster, Jan-Christoph A1 - Faßbender, Stephan T1 - Pattern-Based Support for Context Establishment and Asset Identification of the ISO 27000 in the Field of Cloud Computing T2 - 2011 Sixth International Conference on Availability, Reliability and Security N2 - The ISO 27000 is a well-established series of information security standards. The scope for applying these standards can be an organisation as a whole, single business processes or even an IT application or IT infrastructure. The context establishment and the asset identification are among the first steps to be performed. The quality of the results produced when performing these steps has a crucial influence on the subsequent steps such as identifying loss, vulnerabilities, possible attacks and defining countermeasures. Thus, a context analysis to gather all necessary information in the initial steps is important, but is not offered in the standard. In this paper, we focus on the scope of cloud computing systems and present a way to support the context establishment and the asset identification described in ISO 27005. A cloud system analysis pattern and different kinds of stakeholder templates serve to understand and describe a given cloud development problem, i.e. the envisaged IT systems and the relevant parts of the operational environment. We illustrate our support using an online banking cloud scenario. KW - security standards KW - IT infrastructure KW - ISO27005 KW - Cloud computing KW - risk management Y1 - 2011 UR - https://ieeexplore.ieee.org/document/6045958 SN - 978-1-4577-0979-1 U6 - https://doi.org/10.1109/ARES.2011.55 N1 - Sie haben Zugriff auf den Volltext innerhalb des HSD Campus. SP - 327 EP - 333 PB - IEEE CY - Vienna ER - TY - CHAP A1 - Grote, Wolfgang A1 - Kastsian, Darya A1 - Mönnigmann, Martin T1 - Optimal power system unit commitment with guaranteed local stability T2 - Proceedings of the 2011 American Control Conference N2 - This article deals with the cost optimal commitment of power systems. System stability is often only considered after solving the commitment problem. We show by example that a cost optimization may result in a mode of operation that, while economically optimal, is unstable or has otherwise unacceptable dynamics. As a remedy, we propose to use the so-called normal vector method, which has been developed for the optimization of nonlinear dynamical systems with stability boundaries and uncertain parameters. We apply the method to a small sample power grid, where the optimization goal is to minimize the energy production costs for a given power consumption. KW - Optimization KW - Power system stability KW - Robustness Y1 - 2011 U6 - https://doi.org/10.1109/ACC.2011.5991058 SN - 2378-5861 SP - 4526 EP - 4531 PB - IEEE ER - TY - BOOK ED - Voss, Karsten ED - Musall, Eike T1 - Nullenergiegebäude: Internationale Projekte zum klimaneutralen Wohnen und Arbeiten KW - Definitionsbeschrieb KW - Eigene Methodik KW - Projektbeschrieb KW - Querschnittsauswertung Y1 - 2011 SN - 978-3-920034-50-8 PB - Detail, Institut für internationale Architektur-Dokumentation CY - München ER - TY - CHAP A1 - Musall, Eike T1 - Null-/Plusenergiegebäude - Erfahrungen und Perspektiven zu klimaneutralen Gebäuden in Deutschland T2 - 1. Internationaler Plusenergie-Kongress, Bern Y1 - 2011 CY - Bern ER - TY - JOUR A1 - Voss, Karsten A1 - Musall, Eike T1 - Null- und Plusenergiegebäude: Allgemeine Bilanzierungsverfahren und Schnittstellen zur normativen Praxis in Deutschland JF - EnEVaktuell N2 - Die Begriffe „Nullenergiehaus“ oder „Plusenergiehaus“ sind in den letzten Jahren national und international zum Inbegriff für die konsequente Zusammenführung von Maßnahmen zur drastischen Energieeinsparung und optimierter, dezentraler Nutzung erneuerbarer Energien geworden. Dabei geht es nicht um energieautarke Gebäude und die dabei große Herausforderung der saisonalen Energiespeicherung. Grundidee ist, dass die von einem Gebäude in ein Netz eingespeiste Energiemenge in der Jahresbilanz mindestens dem Energiebezug entspricht. Sowohl im Kontext der Fortführung der europäischen Gebäuderichtline als auch im aktuellen Energiekonzept und Energieforschungsprogramm der Bundesregierung wird das Thema besetzt. KW - Nullenergiehaus KW - Energieinsparung Y1 - 2011 UR - https://www.btga-arch.uni-wuppertal.de/fileadmin/architektur/btga-arch/btga_veroeffentlichungen/btga_zeitschrift/Null-_und_Plusenergiegeb%EF%BF%BDude_EnEVaktuell_12_2011.pdf IS - IV SP - 3 EP - 5 PB - DIN Deutsches Institut für Normung e.V. ER - TY - JOUR A1 - Yang, Zhengxiong A1 - Kollmannsberger, Stefan A1 - Düster, Alexander A1 - Ruess, Martin A1 - Garcia, Eduardo Grande A1 - Burgkart, Rainer A1 - Rank, Ernst T1 - Non-standard bone simulation: interactive numerical analysis by computational steering JF - Computing and Visualization in Science Y1 - 2011 U6 - https://doi.org/10.1007/s00791-012-0175-y VL - 14 IS - 5 SP - 207 EP - 216 PB - Springer ER - TY - GEN T1 - Newsletter 1/2011 N2 - Inhalt: Neues It Konzept : Austausch des E-Mail Servers hat Priorität; Die Campus IT hilft; Microsoft Office Professional privat nutzen; IT Ziele der Fachhochschule Düsseldorf; KW - Newsletter KW - Campus IT KW - IT Konzept KW - FHD Y1 - 2011 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:hbz:due62-opus-6683 CY - Düsseldorf ER - TY - CHAP A1 - Musall, Eike T1 - Near zero energy home, Net zero energy house, Plus energy building-How is it understood and how is it implemented? T2 - Danfoss Heating Solutions' Technology Management Event, Billund Y1 - 2011 CY - Billund ER - TY - CHAP A1 - Jürjens, Jan A1 - Ochoa, Martín A1 - Schmidt, Holger A1 - Marchal, Loïc A1 - Houmb, Siv Hilde A1 - Islam, Shareeful ED - Bernardo, Marco ED - Issarny, Valérie T1 - Modelling Secure Systems Evolution: Abstract and Concrete Change Specifications T2 - Formal Methods for Eternal Networked Software Systems: 11th International School on Formal Methods for the Design of Computer, Communication and Software Systems, SFM 2011, Bertinoro, Italy, June 13-18, 2011. Advanced Lectures N2 - Developing security-critical systems is difficult, and there are many well-known examples of vulnerabilities exploited in practice. In fact, there has recently been a lot of work on methods, techniques, and tools to improve this situation already at the system specification and design. However, security-critical systems are increasingly long-living and undergo evolution throughout their lifetime. Therefore, a secure software development approach that supports maintaining the needed levels of security even through later software evolution is highly desirable. In this chapter, we recall the UMLsec approach to model-based security and discuss on tools and techniques to model and verify evolution of UMLsec models. KW - software evolution KW - UMLsec KW - UMLseCH KW - security Y1 - 2011 UR - https://link.springer.com/chapter/10.1007/978-3-642-21455-4_15 SN - 978-3-642-21455-4 U6 - https://doi.org/10.1007/978-3-642-21455-4_15 VL - LNCS, 6659 SP - 504 EP - 526 PB - Springer CY - Berlin, Heidelberg ER - TY - CHAP A1 - Linnemann, Christian A1 - Echternacht, David A1 - Breuer, Christopher A1 - Moser, Albert T1 - Modeling optimal redispatch for the European Transmission grid T2 - 2011 IEEE Trondheim PowerTech,19.06.2011 - 23.06.2011, Trondheim Y1 - 2011 UR - http://ieeexplore.ieee.org/document/6019442/ SN - 978-1-4244-8418-8 U6 - https://doi.org/10.1109/PTC.2011.6019442 SP - 1 EP - 8 PB - IEEE ER -