TY - CONF AU - Shekarpour, Saeedeh AU - Auer, Sören AU - Ngonga Ngomo, Axel-Cyrille AU - Gerber, Daniel AU - Hellmann, Sebastian AU - Stadler, Claus ED - Boissier, Olivier ED - Benatallah, Boualem ED - P. Papazoglou, Mike ED - W. Ras, Zbigniew ED - Hacid, Mohand-Said ID - 25427 T2 - Proceedings of the 2011 {IEEE/WIC/ACM} International Conference on Web Intelligence, {WI} 2011, Campus Scientifique de la Doua, Lyon, France, August 22-27, 2011 TI - Keyword-Driven SPARQL Query Generation Leveraging Background Knowledge ER - TY - GEN ED - Ghidini, Chiara ED - Ngonga Ngomo, Axel-Cyrille ED - N. Lindstaedt, Stefanie ED - Pellegrini, Tassilo ID - 25428 SN - 978-1-4503-0621-8 TI - Proceedings the 7th International Conference on Semantic Systems, I-SEMANTICS 2011, Graz, Austria, September 7-9, 2011 ER - TY - CHAP AU - Eke, Norbert Otto ID - 19455 T2 - Kathrin Röggla: das stottern des realismus: fiktion und fingiertes, ironie und kritik TI - Vorwort ER - TY - GEN AU - Eke, Norbert Otto ID - 19500 IS - H. 1/2 T2 - Germanistik TI - Zaal Andronikashvili: Die Erzeugung des dramatischen Textes. Ein Beitrag zur Theorie des Sujets VL - 52 ER - TY - GEN AU - Eke, Norbert Otto ID - 19505 IS - H. 1/2 T2 - Germanistik TI - Anna Souksengphet-Dachlauer: Text als Klangmaterial. Heiner Müllers Texte in Heiner Goebbes‘ Hörstücken VL - 52 ER - TY - JOUR AU - Büker, Petra AU - Kordulla, Agnes AU - Pollmann, Achim ID - 19594 IS - 250 JF - Die Grundschulzeitschrift, Ausgabe 250 TI - Eine neue Didaktik für den Übergang? KiTa- und Grundschulkinder erforschen gemeinsam das Phänomen "Wasser" ER - TY - CHAP AU - Büker, Petra ED - Kucharz, Diemut ED - Iron, Thomas ED - Reinhoffer, Bernd ID - 19595 T2 - Grundlegende Bildung ohne Brüche (Jahrbuch Grundschulforschung; Bd. 15) TI - Brüche zwischen Schein und Sein. Zu den Chancen, Risiken und unbeabsichtigten Nebenwirkungen interkultureller Bildung für Grundschulkinder VL - 15 ER - TY - CHAP AU - Büker, Petra AU - Nitsche, Angelika ED - Eckhardt, Juliane ED - al., et ID - 19596 T2 - Ästhetisch-biographische Reflexion in Lehrerbildung und Schule TI - "Denk-Pausen" als Impulse zur biographischen Reflexion - Konturen eines anschlussfähigen Konzeptes zur Professionalisierung der ersten und zweiten Phase der Lehrerausbildung ER - TY - THES AU - Korzeniowski, Miroslaw ID - 19619 SN - 978-3-942647-08-3 TI - Dynamic Load Balancing in Peer-to-Peer Networks VL - 289 ER - TY - JOUR AU - Briest, Patrick AU - Krysta, Piotr AU - Hoefer, Martin ID - 19677 JF - Algorithmica TI - Stackelberg Network Pricing Games VL - 62 ER - TY - CONF AB - Infrastructure as a Service providers use virtualization to abstract their hardware and to create a dynamic data center. Virtualization enables the consolidation of virtual machines as well as the migration of them to other hosts during runtime. Each provider has its own strategy to efficiently operate a data center. We present a rule based mapping algorithm for VMs, which is able to automatically adapt the mapping between VMs and physical hosts. It offers an interface where policies can be defined and combined in a generic way. The algorithm performs the initial mapping at request time as well as a remapping during runtime. It deals with policy and infrastructure changes. We extended the open source IaaS solution Eucalyptus and we evaluated it with typical policies: maximizing the compute performance and VM locality to achieve a high performance and minimizing energy consumption. The evaluation was done on state-of-the-art servers in our own data center and by simulations using a workload of the Parallel Workload Archive. The results show that our algorithm performs well in dynamic data centers environments. AU - Kleineweber, Christoph AU - Keller, Axel AU - Niehörster, Oliver AU - Brinkmann, André ID - 1968 T2 - Proc. Int. Conf. on Parallel, Distributed and Network-Based Computing (PDP) TI - Rule Based Mapping of Virtual Machines in Clouds ER - TY - JOUR AB - System virtualization has become the enabling technology to manage the increasing number of different applications inside data centers. The abstraction from the underlying hardware and the provision of multiple virtual machines (VM) on a single physical server have led to a consolidation and more efficient usage of physical servers. The abstraction from the hardware also eases the provision of applications on different data centers, as applied in several cloud computing environments. In this case, the application need not adapt to the environment of the cloud computing provider, but can travel around with its own VM image, including its own operating system and libraries. System virtualization and cloud computing could also be very attractive in the context of high‐performance computing (HPC). Today, HPC centers have to cope with both, the management of the infrastructure and also the applications. Virtualization technology would enable these centers to focus on the infrastructure, while the users, collaborating inside their virtual organizations (VOs), would be able to provide the software. Nevertheless, there seems to be a contradiction between HPC and cloud computing, as there are very few successful approaches to virtualize HPC centers. This work discusses the underlying reasons, including the management and performance, and presents solutions to overcome the contradiction, including a set of new libraries. The viability of the presented approach is shown based on evaluating a selected parallel, scientific application in a virtualized HPC environment. AU - Birkenheuer, Georg AU - Brinkmann, André AU - Kaiser, Jürgen AU - Keller, Axel AU - Keller, Matthias AU - Kleineweber, Christoph AU - Konersmann, Christoph AU - Niehörster, Oliver AU - Schäfer, Thorsten AU - Simon, Jens AU - Wilhelm, Maximilan ID - 1971 JF - Software: Practice and Experience TI - Virtualized HPC: a contradiction in terms? ER - TY - CONF AB - We present a multi-agent system on top of the IaaS layer consisting of a scheduler agent and multiple worker agents. Each job is controlled by an autonomous worker agent, which is equipped with application specific knowledge (e.g., performance functions) allowing it to estimate the type and number of necessary resources. During runtime, the worker agent monitors the job and adapts its resources to ensure the specified quality of service - even in noisy clouds where the job instances are influenced by other jobs. All worker agents interact with the scheduler agent, which takes care of limited resources and does a cost-aware scheduling by assigning jobs to times with low energy costs. The whole architecture is self-optimizing and able to use public or private clouds. AU - Niehörster, Oliver AU - Keller, Axel AU - Brinkmann, André ID - 1972 T2 - Proc. Int. Meeting of the IEEE Int. Symp. on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS) TI - An Energy-Aware SaaS Stack ER - TY - CONF AB - In dieser Arbeit stellen wir ein flexibles System zur Entwicklung und Evaluation von 3-D-Renderingalgorithmen vor, das die Visualisierung komplexer virtueller Szenen auf einem breiten Spektrum an Geräten erlaubt. Die Aufbereitung und Echtzeitdarstellung solcher virtueller Szenen, wie sie beispielsweise aus detaillierten CAD-Daten erzeugt werden, stellt in vielerlei Hinsicht eine algorithmische und technische Herausforderung dar. Die 3-D-Szenendaten können nach dem Dateiimport aus einem Austauschformat in eine Vielzahl unterschiedlicher Datenstrukturen überführt werden. Es muss ein geeignetes Renderingverfahren ausgewählt und eingestellt werden, welches sowohl die Eigenschaften der Szene (Zahl der Polygone, Grad der Verdeckung etc.) als auch die Fähigkeiten der Hardware berücksichtigt. Auf der einen Seite stellt die Darstellung auf mobilen Endgeräten wie Smartphones besonders hohe Anforderungen aufgrund der Speicherbeschränkung und der geringen Leistungsfähigkeit der Grafikhardware. Auf der anderen Seite stehen bei Großprojektionssystemen, wie beispielsweise dem HD-Visualisierungscenter des Heinz Nixdorf Instituts, die hohe Bildqualität bei stereoskopischer Darstellung und die Unterstützung von Trackingsystemen im Vordergrund. Der Fokus des von uns entwickelten Systems PADrend liegt in der Bereitstellung einer flexiblen und leicht erweiterbaren Grundlage für die Entwicklung und Evaluation von 3-D-Renderingalgorithmen und räumlichen Datenstrukturen im Bereich der Forschung und der universitären Ausbildung. Durch den modularen Aufbau und die große Bandbreite an unterstützten Systemen wird gewährleistet, dass eine Vielzahl unterschiedlicher Entwicklungen und Anwendungen auf PADrend aufsetzen können. In diesem Artikel geben wir einen Überblick über den Aufbau und die Fähigkeiten des Systems. Des Weiteren geben wir ein Beispiel für ein Anwendungsszenario, in dem PADrend eingesetzt wird: die Visualisierung von architektonischen Modellen auf einem Multiprojektionssystem. AU - Jähn, Claudius AU - Petring, Ralf AU - Eikel, Benjamin ID - 19845 T2 - Augmented & Virtual Reality in der Produktentstehung TI - PADrend: Platform for Algorithm Development and Rendering VL - 295 ER - TY - CONF AB - November 2011 AU - Büker, Petra ID - 19908 TI - Heterogenität im Klassenzimmer. Herausforderungen für Lehrer/innenbildung und Praxis. Einführungsvortrag zum Praxistag: Interkulturelles Klassenmanagement des PLAZ sowie des Netzwerkes Lehrkräfte mit Zuwanderungsgeschichte NRW ER - TY - CONF AB - September 2011 AU - Büker, Petra AU - Berning, Hanna ID - 19909 TI - Das Praxissemester in der Ausbildungsregion der Universität Paderborn. Vortrag im Rahmen des Symposions: Das neue Grundschullehramt in NRW an der 20. Jahrestagung der Kommission "Grundschulforschung und Pädagogik in der Primarstufe" der Deutschen Gesellschaft für Erziehungswissenschaft. Universität Paderborn ER - TY - CONF AB - September 2011 AU - Büker, Petra AU - Hüpping, Birgit ID - 19910 TI - Sichtweisen, Handlungslogiken und Belastungserleben von Grundschullehrer/innen im Umgang mit kultureller Vielfalt: Forschungsbefunde aus der Paderborner Professionsstudie Pro-LEG. Vortrag an der 20. Jahrestagung der Kommission "Grundschulforschung und Pädagogik in der Primarstufe" der Deutschen Gesellschaft für Erziehungswissenschaft. Universität Paderborn ER - TY - CONF AB - September 2011 AU - Büker, Petra AU - Bührmann, Thorsten AU - Kordulla, Agnes ID - 19911 TI - Schul- und Kindergartenentwicklung als neues interdisziplinäres Forschungsfeld: Methodologische Herausforderungen am Beispiel des Paderborner Modellprojektes "Kinderbildungshaus". Vortrag an der 20. Jahrestagung der Kommission "Grundschulforschung und Pädagogik der Primarstufe" der Deutschen Gesellschaft für Erziehungswissenschaften. Universität Paderborn ER - TY - CONF AB - September 2011 AU - Büker, Petra AU - Kordulla, Agnes AU - Bunte, Nicola ID - 19913 TI - Lernen in multiprofessionellen Teams - Integrierte Praxisforschung im Paderborner Modellprojekt "Kinderbildungshaus". Vortrag an der Jahrestagung des Nordverbunds Schulbegleitforschung an der Universität Paderborn ER - TY - CONF AB - The challenging scientific field of self-reconfiguring modular robotics (i.e., decentrally controlled 'super-robots' based on autonomous, interacting robot modules with variable morphologies) calls for novel paradigms of designing robot controllers. One option is the approach of evolutionary robotics. In this approach, the challenge is to achieve high evaluation numbers with the available resources which may even affect the feasibility of this approach. Simulations are usually applied at least in a preliminary stage of research to support controller design. However, even simulations are computationally expensive which gets even more burdensome once comprehensive studies and comparisons between different controller designs and approaches have to be done. Hence, a benchmark with low computational cost is needed that still contains the typical challenges of decentral control, is comparable, and easily manageable. We propose such a benchmark and report an empirical study of its characteristics including the transition from the single-robot setting to the multi-robot setting, typical local optima, and properties of adaptive walks through the fitness landscape. AU - Hamann, Heiko AU - Schmickl, Thomas AU - Crailsheim, Karl AU - Krasnogor, Natalio AU - Luca Lanzi, Pier ID - 20180 T2 - Proceedings of the 13th Annual Genetic and Evolutionary Computation Conference, GECCO 2011 TI - Coupled inverted pendulums: A benchmark for evolving decentral controllers in modular robotics ER - TY - CONF AB - The current definitions of emergence have no effects in the context of artificial life that could convincingly be called `constructive'. They are rather descriptive labels or tests. In order to get towards recipes of generating emergence we need to know systemic characteristics that help during the design phase of artificial life systems and worlds. In this paper, we develop and discuss five hypotheses that are not meant to be irrevocable but rather thought-provoking. We introduce two modeling approaches for Langton's ant to clarify these hypotheses. Then we discuss general properties of systems, such as (ir-)reversibility, dependence on initial states, computation, discreetness, and undecidable properties of system states. AU - Hamann, Heiko AU - Schmickl, Thomas AU - Crailsheim, Karl ID - 20181 T2 - IEEE Symposium on Artificial Life (IEEE ALIFE 2011) TI - Thermodynamics of Emergence: Langton's Ant Meets Boltzmann ER - TY - CONF AU - Hamann, Heiko AU - Schmickl, Thomas AU - Crailsheim, Karl ID - 20183 SN - 0302-9743 T2 - 10th European Conference on Artificial Life (ECAL'09) TI - Evolving for Creativity: Maximizing Complexity in a Self-organized Multi-particle System VL - 5777 ER - TY - CONF AU - Hamann, Heiko AU - Schmickl, Thomas AU - Stradner, Jürgen AU - Crailsheim, Karl AU - Thenius, Rona AU - Fitch, Robert ID - 20184 T2 - Robotic Organisms: Artificial Homeostatic Hormone System and Virtual Embryogenesis as Examples TI - Robotic Organisms: Artificial Homeostatic Hormone System and Virtual Embryogenesis as Examples for Adaptive Reaction-Diffusion Controllers ER - TY - JOUR AU - Krimphove, Dieter ID - 2019 IS - Bd. 61. Heft 1 JF - Zeitschrift für das gesamte Genossenschaftswesen ZFgG TI - Die Europäische Genossenschaft (SCE) auf dem Prüfstand ER - TY - CHAP AU - Hamann, Heiko AU - Schmickl, Thomas ED - Xiao, Yang ID - 20193 T2 - Bio-inspired Computing and Communication Networks TI - {BEECLUST}: {A} Swarm Algorithm Derived from Honeybees ER - TY - CONF AU - Hamann, Heiko AU - Karsai, Istvan AU - Schmickl, Thomas AU - Stradner, Jürgen AU - Crailsheim, Karl AU - Thenius, Ronald AU - Kampis, Gyoergy AU - Szathmary, Eoers ID - 20194 T2 - Advances in Artificial Life, 10th European Conference, ECAL 2009 TI - Evolving a novel bio-inspired controller in reconfigurable robots ER - TY - CONF AU - Hamann, Heiko AU - Schmickl, Thomas AU - Crailsheim, Karl AU - Thenius, Ronald AU - Kengyel, Daniela ID - 20195 T2 - 10th European Conference on Artificial Life (ECAL'09) TI - Embodiment of Honeybee's Thermotaxis in a Mobile Robot Swarm ER - TY - CHAP AU - Hamann, Heiko AU - Schmickl, Thomas AU - Crailsheim, Karl ED - Lenaerts, Tom ED - Giacobini, Mario ED - Bersini, Hugues ED - Bourgine, Paul ED - Dorigo, Marco ED - Doursat, Rene ID - 20196 T2 - Advances in Artificial Life, ECAL 2011: Proceedings of the 11th European Conference on the Synthesis and Simulation of Living Systems TI - Explaining Emergent Behavior in a Swarm System Based on an Inversion of the Fluctuation Theorem ER - TY - CHAP AU - Hamann, Heiko AU - Schmickl, Thomas AU - Stradner, Jürgen AU - Crailsheim, Karl AU - Winkler, Lutz ID - 20214 T2 - New Horizons in Evolutionary Robotics TI - Major Feedback Loops Supporting Artificial Evolution in Multi-modular Robotics ER - TY - JOUR AU - Schmickl, Thomas AU - Hamann, Heiko AU - Crailsheim, Karl ID - 20215 IS - 3 JF - Mathematical and Computer Modelling of Dynamical Systems SN - 1387-3954 TI - Modelling a hormone-inspired controller for individual- and multi-modular robotic systems VL - 17 ER - TY - JOUR AU - Gerick, Julia AU - Bloh, Bea ID - 28047 TI - Erweiterter Gestaltungspielraum für Schulen. Welche Veränderungen beschreiben Schulleiterinnen und Schulleiter in ihrem beruflichen Selbstverständnis? VL - 10 ER - TY - CHAP AU - Anskeit, Nadine AU - Eickelmann, Birgit ED - Bonsen, Martin ED - Homeier, Wulf ED - Tschekan, Kerstin ED - Ubben, Lotta ID - 28114 T2 - Unterrichtsqualität sichern – Grundschule TI - Wiki-Einsatz im Deutschunterricht - Mit neuen Technologien kooperatives Lernen unterstützen ER - TY - DATA AU - Davis, Niki AU - Eickelmann, Birgit AU - Patru, Mariana AU - Schulz-Zander, Renate AU - Dzvimbo, Peter ID - 28116 TI - EduSummIT 2011: Restructuring educational systems to move into the digital age ER - TY - JOUR AU - Eickelmann, Birgit ID - 28117 IS - 1 JF - Journal for Educational Research Online/Journal für Bildungsforschung Online TI - Editorial. Technology to enhance learning: Problems and Promises VL - 3 ER - TY - JOUR AU - Lorenz, Ramonda AU - Kahnert, Julia AU - Eickelmann, Birgit AU - Bos, Wilfried ID - 28120 IS - 6 JF - Zeitschrift Schul-Management TI - Mehr Gerechtigkeit durch Zentralabitur? – Analysen einer Lehrerbefragung in NRW VL - 42 ER - TY - JOUR AU - Eickelmann, Birgit AU - Kahnert, Julia AU - Lorenz, Ramona AU - Bos, Wilfried ID - 28121 JF - SchulVerwaltung NRW TI - Das Zentralabitur in Nordrhein-Westfalen aus der Lehrerperspektive. Veränderungen für den Unterricht ER - TY - JOUR AU - Eickelmann, Birgit AU - Bos, Wilfried ID - 28122 IS - 4 JF - Zeitschrift Medienimpulse TI - Messung computer- und informationsbezogener Kompetenzen von Schülerinnen und Schülern als Schlüsselkompetenz im 21. Jahrhundert VL - 3 ER - TY - THES AB - This dissertation explores learner beliefs about pronunciation and their interaction with identity negotiations in a study-abroad context. Current research on studying abroad has experienced a wave of interest in learner-centered questions, gradually moving away from the narrow focus on students’ linguistic development. In particular, the effects of study abroad on learner identities have attracted attention, revealing the impact of the dispositions of individuals, as well as of interlocutors, on the language learning process. The realm of speaking, especially with regard to pronunciation research, however, has hardly benefited from this interest in the individual perspectives of sojourners. Existing studies merely measure the extent to which learners appropriate native-like accents, resulting in partly inconsistent findings with limited insight into individual learning processes and factors. I thus adopt a different focus by qualitatively investigating the interplay between sojourners’ beliefs about pronunciation and their identity constructions and negotiations. My research is based on five case studies of Canadian learners of German. Each research subject has attended a German university for one or two semesters. In applying narrative inquiry as a research tool for both the within- and cross-case analyses, I investigate participants’ accounts in interviews and e-journals, as conducted at different stages throughout the first sojourn term. Poststructuralist-constructivist conceptualizations of learner identities and beliefs guide the data analysis and interpretation. The results of the holistic and categorical content analyses give insight into the intricate relationship between beliefs about pronunciation and learners’ identity work. In their narratives, learners appear to actively use pronunciation as a tool to construct identity facets in correspondence to specific communities of practice, giving meaning to their investment in the sojourn experience. This process of mediating between different identity constructions appears to be highly complex and partially conflict-laden. The participants’ beliefs and reported learning behaviours are interconnected with their definitions of learning goals, which draw on native-speaker ideals to different extents and with varying results. These orientations are in turn related to the subjects’ degrees of critical language awareness, the latter a factor that appears to play a vital role in shaping the ability of learners to take advantage of learning opportunities. In assessing participants’ learning objectives and their readiness to reflect upon their beliefs and orientations, my study also sheds light on the influence of different learning factor constellations on intercultural learning. The results indicate that unidirectional cause-and-effect relationships cannot be drawn between learners’ beliefs about pronunciation and their abilities to approach their roles as intercultural speakers in sojourn environments. My study rather underlines the importance of illuminating individual learning experiences in their idiosyncrasies and complexities, which may lead to a stronger consideration of learners’ subjective stances in both research and teaching practice. The findings of my study suggest that the primary way that language pedagogy can thus foster the ability to engage in intercultural encounters is by helping learners to become aware of their subjective stances, their self-constructions, and the influence of those on the learning process. Therefore, developing the ability and willingness to critically reflect is crucial, especially with regard to pronunciation. In illuminating the intricate nature of learner beliefs and their influence on the learning process, my study demonstrates the importance of qualitative, emic research into the acquisition of L2 pronunciation. AU - Müller, Mareike ID - 28357 TI - Learners' identity negotiations and beliefs about pronunciation in study abroad contexts ER - TY - GEN AU - Böttger, Timm ID - 2872 TI - Bicriteria-Approximation für das k-Median-Clustering mit Bregman-Divergenzen ER - TY - BOOK AU - Aufenanger, Mark ID - 25878 TI - Situativ trainierte Regeln zur Ablaufsteuerung in Fertigungssystemen und ihre Integration in Simulationssysteme VL - 269 ER - TY - CHAP AU - Betz, Stefan ED - Betz, Stefan ID - 2606 T2 - Ausgewählte Probleme des Logistikmanagements TI - Internationale Standortwahl als strategisches Logistikproblem ER - TY - CHAP AU - Betz, Stefan ED - Betz, Stefan ID - 2607 T2 - Ausgewählte Probleme des Logistikmanagements TI - Bedarfsorientiertes Kapazitätsmanagement in Supply Chains ER - TY - BOOK AU - Brink, Volker ID - 26185 TI - Verfahren zur Entwicklung konsistenter Produkt- und Technologiestrategien VL - 280 ER - TY - THES AU - Pohl, Christopher ID - 26187 TI - Konfigurierbare Hardwarebeschleuniger für selbst-organisierende Karten VL - 285 ER - TY - THES AU - Dumitrescu, Roman ID - 26188 TI - Entwicklungssystematik zur Integration kognitiver Funktionen in fortgeschrittene mechatronische Systeme VL - 286 ER - TY - THES AU - Reyes Perez, Mariana ID - 26189 TI - A Specification Technique for the Conceptual Design of Manufacturing Systems VL - 291 ER - TY - THES AU - Krol, Rafal ID - 26194 TI - Eine Reduktionsmethode zur Ableitung elektromechanischer Ersatzmodelle für piezoelektrische Wandler unter Verwendung der Finite-Elemente- Methode (FEM). VL - 293 ER - TY - GEN ED - Gausemeier, Jürgen ED - Rammig, Franz-Josef ED - Schäfer, Wilhelm ED - Trächtler, Ansgar ID - 26195 TI - 8. Paderborner Workshop Entwurf mechatronischer Systeme VL - 294 ER - TY - GEN ED - Gausemeier, Jürgen ED - Grafe, Michael ED - Meyer auf der Heide, Friedhelm ID - 26196 TI - 10. Paderborner Workshop Augmented & Virtual Reality in der Produktentstehung VL - 295 ER - TY - THES AU - Pook, Sebastian ID - 26197 TI - Eine Methode zum Entwurf von Zielsystemen selbstoptimierender mechatronischer Systeme VL - 296 ER - TY - GEN ED - Gausemeier, Jürgen ID - 26198 TI - Vorausschau und Technologieplanung. 7. Symposium für Vorausschau und Technologieplanung VL - 300 ER - TY - CONF AU - Hosseinimehr, Masoud AU - Montealegre, Norma ID - 26276 T2 - The 23rd IASTED International Conference on Parallel and Distributed Computing and Systems (PDCS 2011) TI - Implementation of a Singular Value Decomposition Module on an FPGA ER - TY - CONF AB - In this paper an approach for automatic feature classification based on their motion in the image plane is introduced. By combining concepts of the human perception of motion with techniques belonging to the area of cluster analysis, we subsequently abstract the visual data in order to separate features, whose motion is caused by the sensor motion from features, which possibly belong to dynamic objects in the environment. The presented algorithm exclusively works on data, that can be extracted from the two dimensional image plane. Hence, no external data like the current motion of the applied camera is required. Furthermore, the algorithm works on any type of tracked feature, as long as it can be statistically represented. The results of the presented approach constitute a very good starting point for additional object detection mechanisms. AU - Jungmann, Alexander AU - Kleinjohann, Bernd ID - 26279 T2 - Proceedings of the 5th International Conference on Automation, Robotics and Applications (ICARA) TI - Automatic Feature Classification for Object Detection based on Motion Analysis ER - TY - CONF AB - This paper introduces a novel method for registering a large amount of aerial images when camera parameters are almost unknown and no reference images are available. The envisioned application is the creation of an overview map of a disaster area from images made by unmanned aerial vehicles (UAVs) equipped with cameras. The camera systems only have uncertain information about flight attitude. With traditional methods, the relatively small perspective errors per image sum up over time resulting in perspective errors which prevent building a consistent map from successively arriving images. By using virtual forces between images, the image parameters are continuously adapted to the current map. The small projective errors of quasi orthographic images are distributed among overlapping images. Having UAVs which deliver quasi orthographic images, our approach can build a contemporary overview without the need to have all images in advance. AU - Stern, Claudius AU - Rasche, Christoph AU - Kleinjohann, Lisa AU - Kleinjohann, Bernd ID - 26281 T2 - The 5th International Conference on Automation, Robotics and Applications (ICARA 2011) TI - Towards Using Virtual Forces for Image Registration ER - TY - JOUR AU - Sperling, Jan AU - Vogel, W. ID - 26357 JF - Physical Review A SN - 1050-2947 TI - Determination of the Schmidt number ER - TY - JOUR AU - Sperling, Jan AU - Vogel, W ID - 26358 JF - Physica Scripta SN - 0031-8949 TI - The Schmidt number as a universal entanglement measure ER - TY - JOUR AU - Diller, M. AU - Kundisch, Dennis AU - Späth, T. ID - 2644 IS - 3 JF - CORPORATE FINANCE biz TI - Zur Bewertung von Verlustgesellschaften nach den Änderungen des §8c KStG durch das Wachstumsbeschleunigungsgesetz ER - TY - CHAP AU - Dannewitz, Christian AU - al, et ID - 2662 T2 - Architecture and Design for the Future Internet TI - How to manage and Search/Retrieve Information Objects ER - TY - CHAP AU - Dannewitz, Christian AU - al, et ID - 2663 T2 - Architecture and Design for the Future Internet TI - Integrating Generic Paths and NetInf ER - TY - CONF AB - During rescue scenarios it is indispensable to obtain an overview of the situation. Unmanned aerial vehicles (UAVs) can gather the necessary information in a fast and efficient way. This paper presents an approach for path planning in 3D environments offering a solution to explore disaster areas including, e.g., partially or completely destroyed buildings. Using multiple UAVs decreases the time needed to receive a complete overview if the problem of coordination and task allocation is solved. We present an approach for the use of multiple UAVs. The UAVs work in a distributed manner without any central coordination instance and cover the exploration of terrains as well as goal-oriented path planning. When using multiple UAVs redundant exploration is avoided through the use of inter-UAV-communication. The approach is based on potential fields and uses the simplicity of the gradient method to calculate paths for fast exploration of the terrain. AU - Rasche, Christoph AU - Stern, Claudius AU - Kleinjohann, Lisa AU - Kleinjohann, Bernd ID - 26660 T2 - The 5th International Conference on Automation, Robotics and Applications (ICARA 2011) TI - A Distributed Multi-UAV Path Planning Approach for 3D Environments ER - TY - CONF AU - Mathews, Emi AU - Graf, Tobias AU - Kulathunga, K. S. S. B. ID - 26663 T2 - Sixth International ICST Conference on Bio-Inspired Models of Network, Information, and Computing Systems TI - A Bio-inspired Coverage and Connectivity Maintenance Algorithm ER - TY - CONF AU - Kuznik, Christoph AU - Müller, Wolfgang ID - 26667 T2 - Proc. of the 8th International SoC Design Conference 2011 (ISOCC 2011) TI - Aspect enhanced functional coverage driven verification in the SystemC HDVL ER - TY - CONF AU - Xie, Tao AU - Müller, Wolfgang ID - 26669 T2 - Proceedings of the 16th IEEE International High Level Design Validation and Test Workshop (HLDVT) TI - IP-XACT based System Level Mutation Testing ER - TY - JOUR AU - Henkler, Stefan AU - Oberthür, Simon AU - Giese, Holger AU - Seibel, Andreas ID - 26670 JF - International Journal of Computer Systems Science & Engineering 26 (6) TI - Model-driven runtime resource predictions for advanced mechatronic systems with dynamic data structures ER - TY - JOUR AU - Baldin, Daniel AU - Grösbrink, Stefan AU - Oberthür, Simon ID - 26671 JF - International Journal on Computing (JoC) 1(4) TI - Enabling Constraint-based Binary Reconfiguration by Binary Analysis ER - TY - CONF AU - Bin Tariq, Fahad ID - 26673 T2 - 1st International Workshop on Adaptive Services for the Future Internet, 4th European Conference, ServiceWave 2011 TI - F-DRARE: A Framework for Deterministic runtime adaptation of Cyber Physical Systems ER - TY - CONF AU - Orfanus, Dalimir AU - Janacik, Peter AU - Eliassen, Frank AU - Orten, Pal ID - 26687 T2 - Proceedings of Third World Congress on Nature and Biologically Inspired Computing (NaBIC2011) TI - High-Level Construction of Emergent Self-Organizing Behavior in Massively Distributed Embedded Systems ER - TY - BOOK ED - Betz, Stefan ID - 2669 TI - Ausgewählte Probleme des Logistikmanagements ER - TY - CONF AU - Xie, Tao AU - Müller, Wolfgang ID - 26698 T2 - Proceedings of the 14th Euromicro Conference on Digital System Design (DSD) TI - HDL-Mutation Based Simulation Data Generation by Propagation Guided Search ER - TY - CONF AB - In this paper, we introduce a test bed for demonstrating and investigating self-x properties, such as self-optimization and self-organization, within the scope of multi-robot societies under realistic conditions. By doing so, we shift the investigation and demonstration of biologically inspired mechanisms from the simulative point of view to a dynamic and more complex realistic environment. For this purpose, we developed a controlled real-world environment to overcome common problems such as self-localization. Furthermore, we elaborated a concept for a descriptive robotic real-world game. By means of this game, we provide an instrument, which is easily accessible for any kind of audience on the one hand, while it still leaves enough space for an extensive scientific investigation on the other hand. AU - Jungmann, Alexander AU - Lutterbeck, Jan AU - Werdehausen, Benjamin AU - Kleinjohann, Bernd ID - 26699 T2 - Proceedings of the 9th IEEE International Conference on Industrial Informatics (INDIN) TI - A Test Bed for Investigating Self-X Properties in Multi-Robot Societies ER - TY - CONF AB - Machines are omnipresent. They produce, they transport. Machines facilitate work and assist. The increasing penetration of mechanical engineering by information technology enables considerable benefits. We refer to such systems as advanced mechatronic systems, which relay on the close interaction of mechanics, electric/electronics, control engineering and software engineering. Hence, the design and production of such systems is an interdisciplinary and complex task. Our ambition is a new school for the design of advanced mechatronic systems. Consequently, we need an avant-garde basic system which can be used to develop and to test future applications. The miniature robot BeBot is such a basic system. This robot constitutes the test bench for the applications, being based on modern approaches, such as self-optimization, self-organization and self-coordination as well as on the use of new manufacturing technologies. AU - Gausemeier, Jürgen AU - Schierbaum, Thomas AU - Dumitrescu, Roman AU - Herbrechtsmeier, Stefan AU - Jungmann, Alexander ID - 26701 T2 - Proceedings of the 9th IEEE International Conference on Industrial Informatics (INDIN) TI - Miniature Robot BeBot: Mechatronic Test Platform for Self-X Properties ER - TY - CONF AU - Thuy, Andreas ID - 26702 T2 - Reconfigurable Communication-centric Systems-on-Chip (ReCoSoC), 2011 6th International Workshop on TI - Comparison of periodic and aperiodic task models for cyber-physical-systems ER - TY - JOUR AB - In the area of dynamic verification of virtual prototypes, functional coverage is a valuable tool for answering the "Are we done?" question and achieving verification closure. Recent verification methodologies such as OVM and UVM contain multi-language support that provides a basic SystemC version. However, due to language shortcoming they cannot be utilized for the same amount of verification tasks in the SystemC ecosystem as in other supported hardware design and verification languages. In this presentation, we propose to boost the verification capabilities of SystemC by implementing functional coverage collection and evaluation according to the same metric as defined in the widely accepted IEEE-1800 SystemVerilog cover group feature. We implement a functional coverage library to enable coverage-driven verification of SystemC designs on multiple levels of abstraction enabling value, transition, and expression coverage. To our knowledge, the overall functionalities are not available in the IEEE-1666 SystemC standard or the SCV add-on library, nor are they complete compared to the aforementioned in any publicly available SystemC library. AU - Kuznik, Christoph AU - Müller, Wolfgang ID - 26705 JF - North American SystemC User Group Meeting (16th) TI - Verification Closure of SystemC Designs with Functional Coverage ER - TY - CONF AB - Planar graph routing works provably correct if the underlying network graph is connected and planar. Typically, wireless networks modeled as 2D graphs, are not planar and planar graph routing applied on such unprocessed network graphs may fail. Planarizing a given connected graph by removing intersecting links might be impossible if the outcome still needs to be a connected subgraph. It becomes even more difficult with distributed planarization techniques, where each node is allowed to use only the information about its local neighborhood. Furthermore, it is getting complicated if the nodes' assigned positions do not reflect the exact physical location. With or without exact location information, the outcome might be disconnected, nonplanar, or both of it. With all these unsolvable problems, the question arises how to apply planar graph routing in a realistic network setting? Fortunately, wireless network graphs bear one property which distinguishes them from arbitrary graphs: due to limited communication range, network links cannot become arbitrarily long. In this work we exploit this locality property to build a new localized planarization algorithm, which is location fault tolerant and which produces planar connected graphs in most cases in realistic wireless models. We evaluate our algorithm using the Log Normal Shadowing model and show that our algorithm always produces planar connected graphs in all simulations even when large location errors are present. AU - Mathews, Emi AU - Frey, Hannes ID - 26707 T2 - IEEE International Symposium on a World of Wireless, Mobile and Multimedia Networks (WoWMoM) TI - A Localized Planarization Algorithm for Realistic Wireless Networks ER - TY - CONF AU - Becker, Markus AU - Zabel, Henning AU - Müller, Wolfgang AU - Elfeky, Ahmed AU - DiPasquale, Anthony ID - 26710 T2 - 8. Paderborner Workshop Entwurf mechatronischer Systeme, Band 294 TI - Virtual Prototyping softwareintensiver mechatronischer Systeme – Eine Fallstudie VL - 294 ER - TY - JOUR AU - Rasche, Christoph AU - Stern, Claudius AU - Kleinjohann, Lisa AU - Kleinjohann, Bernd ID - 26711 JF - ThinkMind, International Journal On Advances in Software 3 (3&4) TI - Coordinated Exploration and Goal-Oriented Path Planning using Multiple UAVs ER - TY - CONF AU - Khaluf, Yara AU - Mathews, Emi AU - Rammig, Franz-Josef ID - 26712 T2 - 14th IEEE International Symposium on Object/Component/Service-Oriented Real-Time Distributed Computing Workshops (ISORCW) TI - Self-Organized Cooperation in Swarm Robotics ER - TY - CONF AU - Klobedanz, Kay AU - König, A. AU - Müller, Wolfgang ID - 26713 T2 - Proceedings of Design, Automation, Test Europe - DATE2011 TI - A Reconfiguration Approach for Fault-Tolerant FlexRay Networks ER - TY - CONF AU - Klobedanz, Kay AU - König, A. AU - Müller, Wolfgang AU - Rettberg, Achim ID - 26714 T2 - Second IEEE Workshop on Self-Organizing Real-Time Systems - SORT 2011 TI - Self-Reconfiguration for Fault-Tolerant FlexRay Networks ER - TY - CONF AB - SystemC is a versatile C++ based design and verification language, offering various mechanisms and constructs required for embedded systems modeling. Using the add-on SystemC Verification Library (SCV) elemental constrained-random stimuli techniques may be used for verification. However, SCV has several drawbacks such as lack of a functional coverage facility supporting coverage collection on RTL and TLM models. In this article we present a functional coverage library which implements parts of the IEEE 1800-2005 SystemVerilog standard capturing functional coverage throughout the design and verification process, and allows to facilitate coverage-driven verification in SystemC. AU - Kuznik, Christoph AU - Müller, Wolfgang ID - 26715 T2 - Proceedings of DVCON TI - Functional Coverage-driven Verification with SystemC on Multiple Level of Abstraction ER - TY - CONF AB - UML profiles like SysML and MARTE have been a major research topic in electronic system design, but are mainly applied for specification and analysis in early design phases. High-Level Synthesis (HLS), however, addresses the physical implementation aspect of electronic systems, and thus leads to different requirements on the accuracy of models. For this, modular interfaces are a novel object-oriented synthesizable technique to overcome the conflict between a higher degree of abstraction and necessary details for further synthesis. In this paper, we present our approach to use SysML as an adequate modeling language for modular interfaces and C/C++/SystemC-based HLS. We extended SysML with annotations for synthesizable SystemC and high-level synthesis constraints and implemented a code generation scheme to achieve design flow automation. Based on the SysML editor Artisan Studio and an industrial case study, we demonstrate the applicability of SysML as a retargetable front-end for HLS design flows. AU - Mischkalla, Fabian AU - He, Da AU - Müller, Wolfgang ID - 26716 T2 - Proceedings of 2nd Workshop on Model Based Engineering for Embedded Systems Design (M-BED) TI - A Retargetable SysML-based Front-End for High-Level Synthesis ER - TY - CONF AU - He, Da AU - Mischkalla, Fabian AU - Müller, Wolfgang ID - 26717 T2 - Proceedings of 1st international QEMU Users Forum TI - A SysML-based Framework with QEMU-SystemC Code Generation ER - TY - BOOK ED - Hellmich, Frank ID - 26726 TI - Selbstkonzepte im Grundschulalter – Modelle, empirische Ergebnisse, pädagogische Konsequenzen ER - TY - CHAP AU - Hellmich, Frank ED - Wember, Franz B. ED - Heimlich , Ulrich ID - 26745 T2 - Didaktik des Unterrichts im Förderschwerpunkt Lernen. Ein Handreichung für Studium und Praxis TI - Lehren und Lernen im Geometrieunterricht ER - TY - CHAP AU - Hellmich, Frank ED - Kucharz, Diemut ED - Irion, Thomas ED - Reinhoffer , Bernd ID - 26749 T2 - Grundlegende Bildung ohne Brüche TI - Implizite Fähigkeitstheorien von Grundschulkindern vor dem Übergang auf die weiterführenden Schulen VL - 15 ER - TY - CHAP AU - Hellmich, Frank AU - Günther, Frederike ED - Hellmich, Frank ID - 26750 T2 - Selbstkonzepte im Grundschulalter – Modelle, empirische Ergebnisse, pädagogische Konsequenzen TI - Entwicklung von Selbstkonzepten bei Kindern im Grundschulalter – ein Überblick ER - TY - CHAP AU - Hellmich, Frank AU - Niebuhr-Siebert, Sandra ED - Hornberg, Sabine ED - Valtin, Renate ID - 26751 T2 - Mehrsprachigkeit: Chance oder Hürde beim Schriftspracherwerb? – empirische Befunde und Beispiele guter Praxis TI - Förderung der Lesekompetenz durch ein wortschatzbasiertes Lesestrategietraining bei Kindern mit Deutsch als Zweitsprache ER - TY - CONF AU - Becker, Markus ID - 26782 T2 - 1st International QEMU Users Forum (QUF'11) TI - QEMU/SystemC Cosimulation at Different Abstraction Levels ER - TY - CHAP AU - Adelt, Philipp AU - Esau, Natascha AU - Hölscher, Christian AU - Kleinjohann, Bernd AU - Kleinjohann, Lisa AU - Krüger, Martin AU - Zimmer, Detmar ID - 26783 T2 - Intelligent Mechatronics; Kapitel 10 TI - Hybrid Planning for Self-Optimization in Railbound Mechatronic Systems ER - TY - CONF AU - Gnokam Defo, Gilles Bertrand AU - Müller, Wolfgang ID - 26784 T2 - Methoden und Beschreibungssprachen zur Modellierung und Verifikation von Schaltungen und Systemen (MBMV) TI - Synchronisation eines SystemC Restbus-Simulators mit einem Hardware-In-the-Loop FlexRay Netzwerk ER - TY - CONF AU - Khaluf, Lial AU - Gerth, Christian AU - Engels, Gregor ID - 26787 T2 - Proceedings of the 23rd international conference on Advanced information systems engineering (CAiSE'11) TI - Pattern-Based Modeling and Formalizing of Business Process Quality Constraints ER - TY - CONF AB - Mutation analysis is a powerful tool for white-box testing of the verification environment in order to produce dependable and higher quality software products. However, due to high computational costs and the focus on high-level software languages such as Java mutation analysis is not yet widely used in commercial design flows targeting embedded (software) systems. Here the industry is modeling both hardware and related software parts at higher levels of abstraction, called virtual prototypes, to accelerate parallel development and shorten time-to-market. In this paper we propose a mutation testing verification flow for SystemC based virtual prototypes that may not rely on source code only but on annotated basic blocks and enables mutant creation at assembler level to heavily reduce execution costs and equivalence mutants likelihood. AU - Kuznik, Christoph AU - Müller, Wolfgang ID - 26789 T2 - Proceedings of the 17th IEEE Pacific Rim International Symposium on Dependable Computing TI - Native binary mutation analysis for embedded software and virtual prototypes in SystemC ER - TY - CHAP AU - Esau, Natascha AU - Kleinjohann, Lisa ID - 26792 T2 - Emotional Engineering TI - Emotional Robot Competence and Its Use in Robot Behavior Control ER - TY - CONF AB - In this paper we introduce an infrastructure for investigating Organic Computing principles such as self-optimization and self-organization in real-world scenarios based on a heterogeneous society of robots. This infrastructure, the R3PB-Workbench (Remote Real Robots at the University of Paderborn), provides a controlled environment for conducting real-world multi robot experiments, while relieving the developer from common problems like getting a global view of the entire environment and self-localization within this environment. In addition, it provides a communication layer that hides the heterogeneity of the controlled robot types and also facilitates access to each robot's subjective view. Currently we provide three types of mobile robots with different size and capabilities. Since the workbench is easily customizable, it supports the integration of additional types of robots. Hence, the degree of heterogeneity of the robot group conducting the experiments in the scope of our real-world scenario can be modified as needed. Furthermore, we elaborated a multi-robot game as an illustrative real-world scenario, which on the one hand allows for sophisticated scientific investigations and on the other hand is also appealing for an audience, even with little technical background. AU - Jungmann, Alexander AU - Lutterbeck, Jan AU - Werdehausen, Benjamin AU - Kleinjohann, Bernd AU - Kleinjohann, Lisa ID - 26794 T2 - Proceedings of the 2011 workshop on Organic computing TI - Towards a Real-World Scenario for Investigating Organic Computing Principles in Heterogeneous Societies of Robots ER - TY - CHAP AB - In this article we present an approach that enables robots to learn how to act and react robustly in continuous and noisy environments while not loosing track of the overall feasibility, i.e. minimising the execution time in order to keep up continuous learning. We do so by combining reinforcement learning mechanisms with techniques belonging to the field of multivariate statistics on three different levels of abstraction: the motivation layer and the two simultaneously learning strategy and skill layers. The motivation layer allows for modelling occasionally contradicting goals in terms of drives in a very intuitive fashion. A drive represents one single goal, that a robot wants to be satisfied, like charging its battery, when it is nearly exhausted, or transporting an object to a target position. The strategy layer encapsulates the main reinforcement learning algorithm based on an abstracted and dynamically adjusted Markovian state space. By means of state abstraction, we minimise the overall state space size in order to ensure feasibility of the learning process in a dynamically changing environment. The skill layer finally realises a generalised learning method for learning reactive low-level behaviours, that enable a robot to interact with the environment. AU - Jungmann, Alexander AU - Kleinjohann, Bernd AU - Richert, Willi ID - 26805 T2 - Organic Computing — A Paradigm Shift for Complex Systems, Autonomic Systems TI - A Fast Hierarchical Learning Approach for Autonomous Robots ER - TY - CHAP AB - The paradigm of imitation provides a powerful means for increasing the overall learning speed in a group of robots. While separately exploring the environment in order to learn how to behave with respect to a pre-defined goal, a robot gathers experience based on its own actions and interactions with the surroundings, respectively. By accumulating additional experience via observing the behaviour of other robots, the learning process can be significantly improved in terms of speed and quality. Within this article we present an approach, that enables robots in a multi-robot society to imitate any other available robot without imposing unnecessary restrictions regarding the robots’ design. Therefore, it benefits not only from its own actions, but also from actions that an observed robot performs. In order to realise the imitation paradigm, we solve three main challenges, namely enabling a robot to decide whom and when to imitate, to interpret and thereby understand the behaviour of an observed robot, and to integrate the experience gathered by observation into its individual learning process. AU - Jungmann, Alexander AU - Kleinjohann, Bernd AU - Richert, Willi ID - 26810 T2 - Organic Computing — A Paradigm Shift for Complex Systems, Autonomic Systems, Band 1 TI - Increasing Learning Speed by Imitation in Multi-robot Societies ER - TY - JOUR AU - Herbst, Antje AU - Diethelm, Katharina AU - Cheng, Guo AU - Alexy, Ute AU - Icks, Andrea AU - Buyken, Anette ID - 26904 JF - The Journal of Nutrition SN - 0022-3166 TI - Direction of Associations between Added Sugar Intake in Early Childhood and Body Mass Index at Age 7 Years May Depend on Intake Levels ER - TY - JOUR AB - AbstractObjectiveNutrition-related health problems such as obesity are frequent among children and adolescents of Turkish descent living in Germany, yet data on their dietary habits are scarce. One reason might be the lack of validated assessment tools for this target group. We therefore aimed to validate protein and K intakes from one 24 h recall against levels estimated from one 24 h urine sample in children and adolescents of Turkish descent living in Germany.DesignCross-sectional analyses comprised estimation of mean differences, Pearson correlation coefficients, cross-classifications and Bland–Altman plots to assess the agreement between the nutritional intake estimated from a single 24 h recall and a single 24 h urine sample collected on the previous day.SettingDortmund, Germany.SubjectsData from forty-three study participants (aged 5–18 years; 26 % overweight) with a traditional Turkish background were included.ResultsThe 24 h recall significantly overestimated mean protein and K intake by 10·7 g/d (95 % CI of mean difference: 0·6, 20·7 g/d) and 344 mg/d (95 % CI 8, 680 mg/d), respectively. Correlations between intake estimates were r = 0·25 (P = 0·1) and 0·31 (P = 0·05). Both methods classified 70 % and 69 % of the participants into the same/adjacent quartile of protein and K intake and misclassified 7 % and 7 %, respectively, into the opposite quartile. Bland–Altman plots indicated a wide scattering of differences in both protein and K intake.ConclusionsAmong children and adolescents of traditional Turkish descent living in Germany, one 24 h recall may only be valid for categorizing subjects into high, medium or low consumers. AU - Bokhof, Beate AU - Buyken, Anette AU - Doğan, Canan AU - Karaboğa, Arzu AU - Kaiser, Josa AU - Sonntag, Antje AU - Kroke, Anja ID - 26906 JF - Public Health Nutrition SN - 1368-9800 TI - Validation of protein and potassium intakes assessed from 24 h recalls against levels estimated from 24 h urine samples in children and adolescents of Turkish descent living in Germany: results from the EVET! Study ER - TY - THES AU - Mracek, Boris ID - 26976 TI - Untersuchung des dynamischen Verhaltens gekoppelter piezoelektrischer Ultraschallmotoren mit Stoßkontakt VL - Band 297 ER - TY - CHAP AU - Gries, Thomas ED - Welfens, Paul J.J. ID - 3290 SN - 978-3-642-17606-7 T2 - Zukunftsfähige Wirtschaftspolitik für Deutschland und Europa TI - Internationale Umweltpolitik bei akkumulierender und asymmetrischer Verschmutzungsdynamik ER -