TY - JOUR AU - Elit, Stefan ID - 31357 JF - Wirkendes Wort TI - Literarisches Wissen vom marxistischen Wissenschaftsbetrieb. Historiographische Ideologiedebatten in Gerti Tetzners „Karen W.“ ER - TY - CHAP AU - Zierau, Cornelia ED - Ahouli, Akila ID - 33752 T2 - Germanistik im Kontext des LMD-Systems. Didaktische und curriculare Herausforderung einer regionalen Hochschulpolitik für das Deutsch-Studium in Westafrika TI - Literatur im Studium Deutsch als Fremdsprache und in der internationalen Germanistik: Sprachbildung und Förderung interkultureller Kompetenzen durch literarische Texte ER - TY - CHAP AU - Kruse, Iris ED - Brüggemann, Jörn ED - Mesch, Birgit ID - 34321 T2 - Sprache als Herausforderung - Literatur als Ziel. Kinder- und jugendliterarische Texte und Medien als Ressource für sprachsensibles Lernen TI - Literatursprache im Medienvergleich erfahren. Literaturbezogene sprachliche Handlungserweiterungen in Lehr-Lernarrangements zu kinderliterarischen Medienverbünden ER - TY - CONF AB - LLC resonant converters generally employ MOSFETs in the inverter stage, which can be of half-bridge (HB) or full-bridge (FB) type. The generally weak intrinsic (body) diodes of the MOSFETs cause turn-on losses when being forced to hard current commutations finally leading to the components self-destruction when operated constantly in this way. Consequently, zero-voltage switching (ZVS) operation is more or less essential in a silicon (Si) MOSFET-based HB or FB. To ensure ZVS, the LLC is operated in the inductive region, i.e. with lagging resonant current. On the contrary, IGBTs show dominant turn-off losses and therefore are conventionally not applied in LLCs typically requiring high switching frequencies to achieve low output voltages. Yet, if the LLC is intentionally designed for the capacitive region, i. e. operation with leading current, zero-current switching (ZCS) enabling IGBTs in the inverter stage can be ensured. This paper explores in detail the LLC in the capacitive operating region and gives design considerations for a capacitive LLC utilizing both robust and cost-efficient IGBTs for an exemplary 2.2 kW automotive on-board DC-DC converter application. The results of a loss analysis show that the LLC resonant converter can be operated well in the capacitive region. In the given case, significantly lower overall and 30 % lower inverter stage losses are achieved in the thermally relevant worst-case comparison with an inductive LLC based on Si MOSFETs. AU - Urbaneck, Daniel AU - Rehlaender, Philipp AU - Schafmeister, Frank AU - Böcker, Joachim ID - 29874 T2 - PCIM Europe digital days 2020 TI - LLC Converter Design in Capacitive Operation utilizes ZCS for IGBTs – a Concept Study for a 2.2 kW Automotive DC-DC Stage ER - TY - CONF AB - In this work, we initiate the research about the Gathering problem for robots with limited viewing range in the three-dimensional Euclidean space. In the Gathering problem, a set of initially scattered robots is required to gather at the same position. The robots' capabilities are very restricted -- they do not agree on any coordinate system or compass, have a limited viewing range, have no memory of the past and cannot communicate. We study the problem in two different time models, in FSYNC (fully synchronized discrete rounds) and the continuous time model. For FSYNC, we introduce the 3D-Go-To-The-Center-strategy and prove a runtime of $\Theta(n^2)$ that matches the currently best runtime bound for the same model in the Euclidean plane [SPAA'11]. Our main result is the generalization of contracting strategies (continuous time) from [Algosensors'17] to three dimensions. In contracting strategies, every robot that is located on the global convex hull of all robots' positions moves with full speed towards the inside of the convex hull. We prove a runtime bound of $O(\Delta \cdot n^{3/2})$ for any three-dimensional contracting strategy, where $\Delta$ denotes the diameter of the initial configuration. This comes up to a factor of $\sqrt{n}$ close to the lower bound of $\Omega (\Delta \cdot n)$ which is already true in two dimensions. In general, it might be hard for robots with limited viewing range to decide whether they are located on the global convex hull and which movement maintains the connectivity of the swarm, rendering the design of concrete contracting strategies a challenging task. We prove that the continuous variant of 3D-Go-To-The-Center is contracting and keeps the swarm connected. Moreover, we give a simple design criterion for three-dimensional contracting strategies that maintains the connectivity of the swarm and introduce an exemplary strategy based on this criterion. AU - Braun, Michael AU - Castenow, Jannik AU - Meyer auf der Heide, Friedhelm ID - 16968 T2 - Proceedings of the 27th Conference on Structural Information and Communication Complexity (SIROCCO) TI - Local Gathering of Mobile Robots in Three Dimensions ER - TY - THES AU - Setzer, Alexander ID - 18520 TI - Local Graph Transformation Primitives For Some Basic Problems In Overlay Networks ER - TY - JOUR AU - Hesse, Kerstin AU - Sloan, Ian H. AU - Womersley, Robert S. ID - 34629 JF - Journal of Computational and Applied Mathematics KW - Applied Mathematics KW - Computational Mathematics SN - 0377-0427 TI - Local RBF-based penalized least-squares approximation on the sphere with noisy scattered data VL - 382 ER - TY - JOUR AU - Nitsche, Thomas AU - De, Syamsundar AU - Barkhofen, Sonja AU - Meyer-Scott, Evan AU - Tiedau, Johannes AU - Sperling, Jan AU - Gábris, Aurél AU - Jex, Igor AU - Silberhorn, Christine ID - 26289 JF - Physical Review Letters SN - 0031-9007 TI - Local Versus Global Two-Photon Interference in Quantum Networks ER - TY - JOUR AB - Many countries have opened their health care markets to private for-profit providers, aiming to promote quality and choice for patients. The prices are regulated and providers compete in location and quality. We show that whereas opening a public hospital market typically raises quality, the private provider strategically locates towards the corner of the market to avoid costly quality competition. Social welfare depends on the size of the regulator's budget and on the altruism of the public provider. If the budget is large, high quality results and welfare is highest in a duopoly whenever entry is optimal. If the budget is small, quality levels in a duopoly mirror the quality level in a monopoly. It can be optimal for the regulator not to use the full budget. AU - Hehenkamp, Burkhard AU - Kaarbøe, Odvar M. ID - 17350 JF - Journal of Economic Behavior & Organization TI - Location Choice and Quality Competition in Mixed Hospital Markets VL - 177 ER - TY - CONF AU - Kucklick, Jan-Peter AU - Müller, Oliver ID - 17348 T2 - Symposium on Statistical Challenges in Electronic Commerce Research (SCECR) TI - Location, location, location: Satellite image-based real-estate appraisal ER -