TY - JOUR AU - Kehne, Miriam AU - Brandl-Bredenbeck, Hans-Peter ID - 47459 IS - 4 JF - Praxis der Psychomotorik TI - "Walking Bus" - Der aktive Schulweg VL - 34 ER - TY - CONF AB - Im Projekt DOPPLER (Dortmunder Projekt Physik Lehren und Lernen) arbeiten Teams von Lehrkräften und Fachdidaktikern gemeinsam an der Erstellung neuer Unterrichtsmaterialien, die teilweise auch in der Praxis eingesetzt werden. Der Unterricht und auch die Teamsitzungen wurden aufgezeichnet. Im Verlauf der mehrjährigen Zusammenarbeit konnten vielfältige Informationen zu Lehrerkognitionen gewonnen werden. Die Auswertung der Teamsitzungen führte u.a. auch zu der Frage, inwiefern Lehrkräfte über ihren eigenen Unterricht alltäglich reflektieren. Es wurden strukturierte Interviews zum individuellen Planungs- und Reflexionsverhalten durchgeführt. Im Vortrag wird auf das alltägliche (also nicht videobasierte) Reflexionsverhalten von Physiklehrkräften eingegangen. Insbesondere wird der Frage nachgegangen, inwiefern Planungsprozesse durch individuelle Reflexionsprozesse beeinflusst werden. AU - Jonas-Ahrend, Gabriela AU - Wilbers, Jens ID - 47610 TI - Alltägliche Lehrerreflexion - Intuition oder Information? ER - TY - GEN AU - Bartz, Christina ID - 47767 T2 - Medienwissenschaften. Rezensionen – Reviews TI - Zu: Ralf Kaumanns/Veit Siegenheim/Insa Sjurts (Hrsg.): Auslaufmodell Fernsehen? Perspektiven des TV in der digitalen Medienwelt. Wiesbaden 2008 VL - 4 ER - TY - CONF AB - In this work we focus on the fabrication of ohmic contacts and of Schottky barrier devices (SBD) on non-polar cubic GaN epilayers grown by molecular beam epitaxy (MBE). A Ti/Al/Ni/Au metallization was used for ohmic contacts and the contact resistance was measured by transmission line measurements (TLM). Ni, Pd, Ag and NiSi Schottky barrier devices 300 µm in diameter were fabricated by thermal evaporation using contact lithography on cubic GaN epilayers. The current-voltage (I-V) and the capacity-voltage (C-V) characteristics were studied at room temperature in detail. A clear rectifying behavior was measured in all SBDs. In the Ni and Ag SBDs an abnormal large leakage current under reverse bias was observed. Isochronal thermal annealing of these Ni and Ag based SBDs at 200°C in air improved the reverse characteristics by up to three orders of magnitude. This is in contrast to the Pd contacts, where the as grown contact showed already good performance and thermal annealing had nearly no influence on the I-V characteristics. For all SBDs the magnitude of the reverse current is generally larger than that expected due to thermionic emission and an exponential increase of the reverse current is observed with increasing reverse voltage. In-depth analysis of the I-V characteristic showed that a thin surface barrier is formed at the metal semiconductor interface and that crystal defects like dislocations may be the reasons for the discrepancy between experimental data and thermionic emission theory. AU - As, Donat J. AU - Tschumak, Elena AU - Laubenstein, Irina AU - Kemper, Ricarda M. AU - Lischka, Klaus ID - 4218 T2 - Materials Research Society Symposium Proceedings TI - Schottky and Ohmic Contacts on Non-Polar Cubic GaN Epilayers VL - 1108 ER - TY - BOOK ED - Jacke, Christoph ED - Zierold, Martin ID - 48028 SN - 0259-7446 TI - Populäre Erinnerungskulturen. Erinnern und Vergessen in der Medienkultur VL - 24 ER - TY - BOOK AU - Jacke, Christoph ID - 48024 SN - 9783643101419 TI - Einführung in Populäre Musik und Medien VL - 1 ER - TY - GEN AU - Güldenpenning, Iris AU - Kunde, Wilfried AU - Weigelt, Matthias AU - Schack, Thomas ID - 48056 T2 - 42. Herbsttreffen Experimentelle Kognitionspsychologie (HexKoP) TI - Subliminales Priming bei Stimuli einer komplexen Bewegung ER - TY - CONF AU - Schmalenstroeer, Joerg AU - Leutnant, Volker AU - Haeb-Umbach, Reinhold ID - 11900 T2 - 1st International Workshop on Distributed Computing in Ambient Environments within 32nd Annual Conference on Artificial Intelligence TI - Audio-Visual Data Processing for Ambient Communication ER - TY - CHAP AU - Hartung, Olaf ED - Hodel, Jan ED - Ziegler, Bèatrice ID - 48684 SN - 978-3-03905-450-3 T2 - Forschungswerkstatt Geschichtsdidaktik 07: Beiträge zur Tagung "Geschichtsdidaktik empirisch 07" TI - Geschichte – Schreiben – Lernen. Empirische Erkundungen epistemischer Textarbeitsformen im Geschichtsunterricht ER - TY - CHAP AU - Schulze, Max AU - Menne, Katrin ED - Kwangchul, Kim ID - 49035 SN - 1795-7905 T2 - Graphic TI - Schwarzweiss Magazin VL - 10 ER - TY - BOOK ED - Schulze, Max ED - Menne, Katrin ID - 49066 TI - schwarzweiss-drei VL - 3 ER - TY - CHAP AU - Gretz, Daniela ED - Tamcke, Martin ED - Manukyan, Arthur ID - 49230 T2 - Protestanten im Orient TI - »wie der Orient sich im Auge einer Tochter des Okzidents abspiegelt« – Frauen-Reisen in den Orient von Ida Pfeiffer bis Ella Maillart ER - TY - CHAP AU - Bartz, Christina ED - Berton, Mireille ED - Weber, Anne-Katrin ID - 47734 T2 - La télévision du téléphonoscope à youtube. Pour une archéologie de l'audiovision TI - Normativité et normalité du discours allmand sur la télévision dans les années 1950 ER - TY - CHAP AU - Schuster, Britt-Marie ED - Linke , Angelika ED - Feilke , Helmuth ID - 31292 KW - Fachkommunikation T2 - Oberfläche und Performanz. Untersuchungen zur Sprache als dynamische Gestalt TI - Professionalisierung durch Oberflächen: Schreiben über psychisch Kranke im 19. Jahrhundert ER - TY - CHAP AU - Schuster, Britt-Marie ED - Klein , Christian ID - 31290 KW - Historische Medienlinguistik T2 - Handbuch Biographie. Methoden, Traditionen, Theorien TI - Biographisches Erzählen und digitale Medien ER - TY - CHAP AU - Schuster, Britt-Marie AU - Wich-Reif, Claudia ED - Schuster, Britt-Marie ID - 31288 KW - Textsemantik T2 - Praxis Deutsch 215 TI - Backfisch – Jugendlicher – Teenie. Veränderungen von Personenbezeichnungen wahrnehmen ER - TY - CONF AB - Over the last decades, evolutionary algorithms (EA) have proven their applicability to hard and complex industrial optimization problems in many cases. However, especially in cases with high computational demands for fitness evaluations (FE), the number of required FE is often seen as a drawback of these techniques. This is partly due to lacking robust and reliable methods to determine convergence, which would stop the algorithm before useless evaluations are carried out. To overcome this drawback, we define a method for online convergence detection (OCD) based on statistical tests, which invokes a number of performance indicators and which can be applied on a stand-alone basis (no predefined Pareto fronts, ideal and reference points). Our experiments show the general applicability of OCD by analyzing its performance for different algorithmic setups and on different classes of test functions. Furthermore, we show that the number of FE can be reduced considerably – compared to common suggestions from literature – without significantly deteriorating approximation accuracy. AU - Wagner, Tobias AU - Trautmann, Heike AU - Naujoks, Boris ED - Ehrgott, Matthias ED - Fonseca, Carlos M. ED - Gandibleux, Xavier ED - Hao, Jin-Kao ED - Sevaux, Marc ID - 46414 SN - 978-3-642-01020-0 T2 - Evolutionary Multi-Criterion Optimization TI - OCD: Online Convergence Detection for Evolutionary Multi-Objective Algorithms Based on Statistical Testing ER - TY - CONF AB - Noisy environments are a challenging task for multiobjective evolutionary algorithms. The algorithms may be trapped in local optima or even become a random search in the decision and objective space. In the course of the paper the classical definition of Pareto-dominance is enhanced subject to noisy objective functions in order to make the evolutionary search process more robust and to generate a reliable Pareto front. At each point in the decision space the objective functions are evaluated a fixed number of times and the convex hull of the objective function vectors is computed. Expectation is associated with the median of the objective function values while uncertainty is reflected by the average distance of the median in each dimension to the points defining the convex hull. By combining these two indicators a new concept of Pareto-dominance is set up. An implementation in NSGA-II and application to test problems show a gain in robustness and search quality. AU - Trautmann, Heike AU - Mehnen, Jorn AU - Naujoks, Boris ID - 46415 SN - 1941-0026 T2 - 2009 IEEE Congress on Evolutionary Computation TI - Pareto-dominance in noisy environments ER - TY - CONF AB - Industry applications of multiobjective optimization problems mostly are characterized by the demand for high quality solutions on the one hand. On the other hand an optimization result is desired which at any rate meets the time constraints for the evolutionary multiobjective algorithms (EMOA). The handling of this trade-off is a frequently discussed issue in multiobjective evolutionary optimization. AU - Naujoks, Boris AU - Trautmann, Heike ID - 46413 SN - 1941-0026 T2 - 2009 IEEE Congress on Evolutionary Computation TI - Online convergence detection for multiobjective aerodynamic applications ER - TY - JOUR AU - Trautmann, Heike AU - Mehnen, J ID - 46416 IS - 2 JF - International Journal of Computational Intelligence Research TI - Statistical Methods for Improving Multi-objective Evolutionary Optimisation VL - 5 ER -