TY - CONF AU - Bohn, Nicolai AU - Kundisch, Dennis ID - 2558 T2 - Proceedings of the 25th European Conference on Information Systems (ECIS) TI - The Role of Technology Pivots in Software Startups: Antecedents and Consequences ER - TY - GEN AU - Arendt, Lukas Sebastian ID - 2559 TI - Datengetriebene Geschäftsmodelle: Ein Literaturüberblick ER - TY - GEN AU - Eke, Norbert Otto ID - 19499 IS - Juni 2018 T2 - Bargfelder Bote TI - Einverleibungen [zu: Hans-Edwin Friedrich (Hg.): Arno Schmidt und das 18. Jahrhundert. Göttingen: Wallstein 2017] VL - 423-424 ER - TY - GEN AB - Object ranking is an important problem in the realm of preference learning. On the basis of training data in the form of a set of rankings of objects, which are typically represented as feature vectors, the goal is to learn a ranking function that predicts a linear order of any new set of objects. Current approaches commonly focus on ranking by scoring, i.e., on learning an underlying latent utility function that seeks to capture the inherent utility of each object. These approaches, however, are not able to take possible effects of context-dependence into account, where context-dependence means that the utility or usefulness of an object may also depend on what other objects are available as alternatives. In this paper, we formalize the problem of context-dependent ranking and present two general approaches based on two natural representations of context-dependent ranking functions. Both approaches are instantiated by means of appropriate neural network architectures, which are evaluated on suitable benchmark task. AU - Pfannschmidt, Karlson AU - Gupta, Pritha AU - Hüllermeier, Eyke ID - 19524 T2 - arXiv:1803.05796 TI - Deep Architectures for Learning Context-dependent Ranking Functions ER - TY - BOOK AB - Bd. 58: Hermann Hesse Today/Hermann Hesse heute. Hg. v. Ingo Cornils und Osman Durrani. Amsterdam – New York: Rodopi 2005. 221 S. Bd. 59: Textmaschinenkörper. Genderorientierte Lektüren des Androiden. Hg. v. Eva Kormann, Anke Gilleir und Angelika Schlimmer. Amsterdam – New York: Rodopi 2006. 253 S. Bd. 60: Bombs Away! Representing the Air War over Europe and Japan. Hg. V. Wilfried Rasch und William Rasch. Amsterdam – New York: Rodopi 2006. 404 S. Bd. 61: Schiller: National Poet – Poet of Nations. A Birmingham Symposium. Hg. v. Nicholas Martin. Amsterdam – New York: Rodopi 2006. 341 S. Bd. 62: The Enlightened Eye. Goethe and Visual Culture. Hg. v. Evelyn K. Moore und Patricia Anne Simpson. Amsterdam – New York: Rodopi 2007. 322 S. Bd. 63: Processes of Transposition. German Literature and Film. Hg. v. Christiane Schönfeld in Verbindung mit Hermann Rasche. Amsterdam – New York: Rodopi 2007. 384 S. Bd. 64: Literatur im Krebsgang. Totenbeschwörung und memoria in der deutschsprachigen Literatur nach 1989. Hg. v. Arne De Winde und Anke Gilleir. Amsterdam – New York: Rodopi 2008. 363 S. Bd. 65: Trunkenheit. Kulturen des Rausches. Hg. v. Thomas Strässle und Simon Zumsteg. Amsterdam – New York: Rodopi 2008. 266 S. Bd. 66: „Verwisch die Spuren!“ Bertolt Brecht’s Work and Legacy. A Reassess-ment. Hg. v. Robert Gillet und Godela Weiss-Sussex. Amsterdam – New York: Rodopi 2008. 359 S. Bd. 67: Neulektüren – New Readings. Festschrift für Gerd Labroisse zum 80. Geburtstag. Hg. v. Norbert Otto Eke und Gerhard P. Knapp. Amsterdam – New York: Rodopi 2009. 389 S. Bd. 68: Exiles Traveling. Exploring Displacement, Crossing Boundaries in German Exile Arts and Writing 1933-1945. Hg. v. Johannes F. Evelein. Amsterdam – New York: Rodopi 2009. 391 S. Bd. 69: Von der nationalen zur internationalen Literatur. Transkulturelle deutschsprachige Literatur und Kultur im Zeitalter globaler Migration. Hg. v. Helmut Schmitz. Amsterdam – New York: Rodopi 2009. 362 S. Bd. 70: Gender and Laughter. Comic Affirmation and Subversion in Traditional and Modern Media. Hg. v. Gaby Pailer, Andreas Böhn, Stefan Horlacher und Ulrich Scheck. Amsterdam – New York: Rodopi 2009. 386 S. Bd. 71: „Friede, Freiheit, Brot!“ Romane zur deutschen Novemberrevolution. Hg. v. Ulrich Kittstein und Regine Zeller. Amsterdam – New York: Rodopi 2009. 368 S. Bd. 72: Schreiben expatria / Expatriate Writing. Hg. von Gerhard Fischer. Amsterdam – New York: Rodopi 2009. 527 S. Bd. 73: Justitiabilität und Rechtmäßigkeit. Verrechtlichungsprozesse von Literatur und Film in der Moderne. Hg. von Claude D. Conter. Amsterdam – New York: Rodopi 2010. 286 S. Bd. 74: Wege des essayistischen Schreibens im deutschsprachigen Raum (1900-1920). Hg. von Marina Marzia Brambilla und Maurizio Pirro. Amsterdam – New York: Rodopi 2010. 442 S. Bd. 75: Spatial Turns. Space, Place, and Mobility in German Literary and Visual Culture. Hg. von Jaimey Fisher und Barbara Mennel. Amsterdam – Ney York: Rodopi 2010. 469 S. Bd. 76: Weltanschauliche Orientierungsversuche im Exil / New Orientations of World View in Exile. Hg. von Reinhard Andress. Mitherausgeber Evelyn Meyer und Greg Divers. Amsterdam – Ney York: Rodopi 2010. 371 S. Bd. 77: Karl Philipp Moritz. Signaturen des Denkens. Hg. von Anthony Krupp. Amsterdam – New York. Rodopi 2011. 314 S. Bd. 78: GeschlechterSpielRäume. Dramatik, Theater, Performance und Gender. Hg. von Gaby Pailer und Franziska Schößler. Amsterdam – New York. Rodopi 2011. 374 S. Bd. 79: Contemplating Violence. Critical Studies in Modern German Culture. Hg. von Stefani Engelstein und Carl Niekerk. Amsterdam – New York. Rodopi 2011. 296 S. Bd. 80: Deutsch-afrikanische Diskurse in Geschichte und Gegenwart. Literatur- und kulturwissenschaftliche Perspektiven. Hg. von Michael Hofmann und Rita Morrien. Amsterdam-New York: Rodopi 2012. 317 S. Bd. 81: Commitment and Compassion. Essays on Georg Büchner. Festschrift for Gerhard P. Knapp. Hg. von Patrick Fortmann und Martha B. Helfer. Amsterdam-New York: Rodopi 2012. 345 S. Bd. 82: Literatur inter- und transmedial / Inter- and Transmedial Literature. Hg. von David Bathrick und Heinz-Peter Preußer. Amsterdam-New York: Rodopi 2012. 450 S. Bd. 83: „Nach der Mauer der Abgrund“? (Wieder-)Annäherungen an die DDR-Literatur. Hg. von Norbert Otto Eke. Amsterdam-New York: Rodopi 2013. 362 S. Bd. 84: Der Nationalsozialismus und die Shoah in der deutschsprachigen Gegenwartsliteratur. Hg. von Torben Fischer, Philipp Hammermeister und Sven Kramer. Amsterdam – New York: Rodopi 2014. 344 S. Bd. 85: Voices from Exile. Essays in Memory of Hamish Ritchie. Hg. von Ian Wallace. Leiden, Boston: Brill Rodopi 2015. 337 S. Bd. 86: Scholarly Editing and German Literature. Hg. Von Lydia Jones, Bodo Plachta, Gaby Pailer und Catherine Karen Roy. Leiden, Boston: Brill Rodopi 2015. 306 S. Bd. 87: Networks of Refugees from Nazi Germany. Continuities, Reorientations, and Collaborations in Exile. Hg. von Helga Schreckenberger. Leiden, Boston: Brill Rodopi 2016. 293 S. Bd. 88: Der Essay als Universalgattung des Zeitalters. Diskurse, Themen und Positionen zwischen Jahrhundertwende und Nachkriegszeit. Hg. von Michael Ansel, Jürgen Egyptien und Hans-Edwin Friedrich. Leiden, Boston: Brill Rodopi 2016. 444 S. Bd. 89: Georg Büchner. Contemporary Perspectives. Hg. von Robert Gillet, Ernest Schonfield und Daniel Steuer. Leiden, Boston: Brill│Rodopi 2017. 384 S. Bd. 90: Shakespeare as German Author. Reception, Translation Theory, and Cultural Transfer.Hg. von John A.McCarthy. Leiden, Boston: Brill│Rodopi 2018. 245 S. ED - Eke, Norbert Otto ED - Donahue, William Collins ED - Helfer, Martha B. ED - Kramer, Sven ID - 19593 TI - Amsterdamer Beiträge zur neueren Germanistik (Herausgebertätigkeit von Norbert Otto Eke von Bd. 58, 2005, bis Bd. 90, 2018) ER - TY - JOUR AU - Ditter, Jan AU - Wünsche, Marc AU - Meschut, Gerson AU - Wibbeke, Tim Michael ID - 19742 JF - Welding in the World SN - 0043-2288 TI - Mechanical properties of repair welded joints for automobile body structures ER - TY - CONF AU - Ditter, Jan AU - Meschut, Gerson ED - da Silva, Lucas ID - 19754 TI - Qualification of Fast Curing Processes for Elementary Bonded Structures ER - TY - CONF AB - Angegebener Monat: November 2018 AU - Büker, Petra AU - Höke, Julia ID - 19772 TI - Der „Paderborner Qualitätsstern©“ als Selbsteinschätzungsinstrument für Kooperationsnetz-werke aus Kitas und Grundschulen – Gelingensbedingungen für Transfer und Dialog von Wissenschaft, Bildungsadministration und Praxis. Open-Space-Beitrag im Rahmen der Fachtagung „Transfer in der frühkindlichen Bildung: Wissenschaft, Praxis und Bildungsadministration im Dialog“, Robert-Bosch-Stiftung Berlin ER - TY - CONF AB - Angegebener Monat: September 2018 AU - Büker, Petra AU - Hüpping, Birgit ID - 19774 TI - Kinder partizipativ in Forschung einbeziehen: Ein kinderrechtsbasiertes Stufenmodell. Vortrag an der 27. Jahrestagung der Kommission Grundschulforschung und Pädagogik der Primarstufe an der Goethe Universität Frankfurt ER - TY - CONF AB - Angegebener Monat: September 2018 AU - Büker, Petra ID - 19776 TI - Grundschule im Wandel. Bildung heute für die Welt von morgen. Keynote anlässlich des 1. Delbrücker Grundschultages: „50 Jahre Schulform Grundschule“. Initiiert vom Arbeitskreis Delbrücker Grundschulen ER - TY - CONF AB - Angegebener Monat: August 2018 AU - Büker, Petra AU - Hüpping, Birgit ID - 19777 TI - Design of participatory educational processes in a primary school from the perspective of children. Symposiumsbeitrag im Rahmen der 28 th EECERA conference - European Early Childhood Research Association. Universität Budapest, Ungarn ER - TY - CONF AB - Angegebener Monat: Juni 2018 AU - Büker, Petra ID - 19778 TI - Qualität in Kooperationsverbünden erhalten und weiter ausbauen. Perspektiven einer kinder-stärkenden und professionalisierenden Zusammenarbeit. Impulsvortrag im Rahmen der Regionalkonferenz Netzwerk Übergang Kita-Grundschule, Bildungsbüro Kind & Ko Paderborn ER - TY - GEN AU - Camberg, Alan Adam AU - Tröster, Thomas AU - Sotirov, Nikolay AU - Tölle, Jörn AU - Bohner, Friedrich ID - 19868 T2 - Materials Science and Engineering (MSE) Congress 2018 TI - Investigation of ductility and damage characteristics of EN AW-5182 H18 at non-isothermal forming conditions ER - TY - GEN AU - Vorderbrüggen, Julian AU - Meschut, Gerson AU - Augenthaler, Florian AU - Ditz, Michael AU - Günter, Heinrich AU - Schmal, Christopher ID - 19898 T2 - Jahresmagazin Werkstofftechnik TI - Fügetechnik: Schlüsseltechnologie für ressourceneffiziente Hochleistungsverbundsysteme ER - TY - JOUR AB - A bifurcation is a qualitative change in a family of solutions to an equation produced by varying parameters. In contrast to the local bifurcations of dynamical systems that are often related to a change in the number or stability of equilibria, bifurcations of boundary value problems are global in nature and may not be related to any obvious change in dynamical behaviour. Catastrophe theory is a well-developed framework which studies the bifurcations of critical points of functions. In this paper we study the bifurcations of solutions of boundary-value problems for symplectic maps, using the language of (finite-dimensional) singularity theory. We associate certain such problems with a geometric picture involving the intersection of Lagrangian submanifolds, and hence with the critical points of a suitable generating function. Within this framework, we then study the effect of three special cases: (i) some common boundary conditions, such as Dirichlet boundary conditions for second-order systems, restrict the possible types of bifurcations (for example, in generic planar systems only the A-series beginning with folds and cusps can occur); (ii) integrable systems, such as planar Hamiltonian systems, can exhibit a novel periodic pitchfork bifurcation; and (iii) systems with Hamiltonian symmetries or reversing symmetries can exhibit restricted bifurcations associated with the symmetry. This approach offers an alternative to the analysis of critical points in function spaces, typically used in the study of bifurcation of variational problems, and opens the way to the detection of more exotic bifurcations than the simple folds and cusps that are often found in examples. AU - McLachlan, Robert I AU - Offen, Christian ID - 19935 JF - Nonlinearity SN - 0951-7715 TI - Bifurcation of solutions to Hamiltonian boundary value problems ER - TY - JOUR AB - Symplectic integrators can be excellent for Hamiltonian initial value problems. Reasons for this include their preservation of invariant sets like tori, good energy behaviour, nonexistence of attractors, and good behaviour of statistical properties. These all refer to {\em long-time} behaviour. They are directly connected to the dynamical behaviour of symplectic maps φ:M→M' on the phase space under iteration. Boundary value problems, in contrast, are posed for fixed (and often quite short) times. Symplecticity manifests as a symplectic map φ:M→M' which is not iterated. Is there any point, therefore, for a symplectic integrator to be used on a Hamiltonian boundary value problem? In this paper we announce results that symplectic integrators preserve bifurcations of Hamiltonian boundary value problems and that nonsymplectic integrators do not. AU - McLachlan, Robert I AU - Offen, Christian ID - 19937 JF - Numerical Algorithms SN - 1017-1398 TI - Symplectic integration of boundary value problems ER - TY - GEN AB - We introduce the \emph{Online Connected Dominating Set Leasing} problem (OCDSL) in which we are given an undirected connected graph $G = (V, E)$, a set $\mathcal{L}$ of lease types each characterized by a duration and cost, and a sequence of subsets of $V$ arriving over time. A node can be leased using lease type $l$ for cost $c_l$ and remains active for time $d_l$. The adversary gives in each step $t$ a subset of nodes that need to be dominated by a connected subgraph consisting of nodes active at time $t$. The goal is to minimize the total leasing costs. OCDSL contains the \emph{Parking Permit Problem}~\cite{PPP} as a special subcase and generalizes the classical offline \emph{Connected Dominating Set} problem~\cite{Guha1998}. It has an $\Omega(\log ^2 n + \log |\mathcal{L}|)$ randomized lower bound resulting from lower bounds for the \emph{Parking Permit Problem} and the \emph{Online Set Cover} problem~\cite{Alon:2003:OSC:780542.780558,Korman}, where $|\mathcal{L}|$ is the number of available lease types and $n$ is the number of nodes in the input graph. We give a randomized $\mathcal{O}(\log ^2 n + \log |\mathcal{L}| \log n)$-competitive algorithm for OCDSL. We also give a deterministic algorithm for a variant of OCDSL in which the dominating subgraph need not be connected, the \emph{Online Dominating Set Leasing} problem. The latter is based on a simple primal-dual approach and has an $\mathcal{O}(|\mathcal{L}| \cdot \Delta)$-competitive ratio, where $\Delta$ is the maximum degree of the input graph. AU - Markarian, Christine ID - 19978 T2 - arXiv:1805.02994 TI - Online Connected Dominating Set Leasing ER - TY - JOUR AB - Approximate computing has shown to provide new ways to improve performance and power consumption of error-resilient applications. While many of these applications can be found in image processing, data classification or machine learning, we demonstrate its suitability to a problem from scientific computing. Utilizing the self-correcting behavior of iterative algorithms, we show that approximate computing can be applied to the calculation of inverse matrix p-th roots which are required in many applications in scientific computing. Results show great opportunities to reduce the computational effort and bandwidth required for the execution of the discussed algorithm, especially when targeting special accelerator hardware. AU - Lass, Michael AU - Kühne, Thomas AU - Plessl, Christian ID - 20 IS - 2 JF - Embedded Systems Letters SN - 1943-0663 TI - Using Approximate Computing for the Calculation of Inverse Matrix p-th Roots VL - 10 ER - TY - CONF AU - Meyer, Sebastian AU - Meschut, Gerson AU - Behrens, Bernd-Arno AU - Hübner, Sven AU - Vogt, Hendrik ID - 20133 TI - Integration mechanischer Funktionselemente in den Warmumformprozess ER - TY - CONF AU - Habernal, Ivan AU - Wachsmuth, Henning AU - Gurevych, Iryna AU - Stein, Benno ID - 20188 T2 - Proceedings of the 16th Annual Conference of the North American Chapter of the Association for Computational Linguistics: Human Language Technologies TI - The Argument Reasoning Comprehension Task: Identification and Reconstruction of Implicit Warrants ER - TY - CONF AU - Göddecke, Johannes AU - Meschut, Gerson AU - Teutenberg, Dominik ED - da Silva, Lucas ID - 20263 SN - 978-989-8927-24-8 T2 - 12TH EUROPEAN ADHESION CONFERENCE (EURADH 2018) TI - Constructive design of bonded FRP mixed joints under consideration of edge effects ER - TY - BOOK AU - Göddecke, Johannes AU - Meschut, Gerson ID - 20267 SN - 978-3-86780-559-9 TI - FOREL-Studie 2018: Ressourceneffizienter Leichtbau für die Mobilität (Wandel-Prognose-Transfer) ER - TY - JOUR AB - Modern developments in the automotive sector are motivated by the objective of lowering the emission of pollutants. In contrast, growing demands for safety and comfort lead to a potential increase of the weight of vehicles. Thus, the consequent use of lightweight design is indispensable. This includes the use of different materials for the construction of car bodies. Because of various material properties, joining of dissimilar materials is challenging and requires often the application of non-thermic processes like riveting or clinching. These processes are limited by the mechanical properties of the joining partners. Especially the increasing use of ultra-high strength alloys, like the hot stamped steel 22MnB5, makes the development of new joining technologies necessary. One of these innovative technologies is shear-clinching. By combining shear-cutting and clinching in one process, this technology produces durable and tight connections of dissimilar materials with high differences regarding strength and formability. In contrast to shear-cutting the die-sided material has no contact with the punch. Since the process of shear-clinching is a combination of cutting and joining using the same tool, the tool loads differ from common shear-cutting. Especially cutting hot stamped steels is a challenge due to their high ultimate strength which leads to high tool loads. Thus, the analysis of the load condition is essential for the dimensioning of durable and wear resistant tools. Hence, the scope of this paper is a numerical investigation of the tool loads during the indirect cutting process and the subsequent step of joining by forming during shear-clinching. Since an experimental investigation of the occurring tool loads in the closed process is not practicable, the finite element method has to be used. Therefore, a damage-based numerical model is set up to enable the coupled simulation of the combined cutting and joining process and the resulting tool loads. This allows the analysis of the loads during the whole process, identifying the influences of materials and sheet thicknesses. AU - Wiesenmayer, Sebastian AU - Müller, Martin AU - Dornberger, Peter AU - Han, Daxin AU - Hörhold, Réjane AU - Meschut, Gerson AU - Merklein, Marion ID - 20282 JF - Key Engineering Materials SN - 1662-9795 TI - Numerical Investigation of the Tool Load in Joining by Forming of Dissimilar Materials Using Shear-Clinching Technology ER - TY - JOUR AU - Han, Daxin AU - Hörhold, Réjane AU - Wiesenmayer, Sebastian AU - Merklein, Marion AU - Meschut, Gerson ID - 20283 JF - Procedia Manufacturing SN - 2351-9789 TI - Investigation of the influence of tool-sided parameters on deformation and occurring tool loads in shear-clinching processes ER - TY - JOUR AU - Ivanjko, Martin AU - Meschut, Gerson ID - 20289 JF - Welding in the World SN - 0043-2288 TI - Innovative joining technology for multi-material applications with high manganese steels in lightweight car body structures ER - TY - JOUR AU - Weber, KS AU - Simon, MC AU - Strassburger, K AU - Markgraf, DF AU - Buyken, Anette AU - Szendroedi, J AU - Müssig, K AU - Roden, M AU - Group, GDS ID - 27981 IS - 6 JF - Nutrients SN - 2072-6643 TI - Habitual Fructose Intake Relates to Insulin Sensitivity and Fatty Liver Index in Recent-Onset Type 2 Diabetes Patients and Individuals without Diabetes. VL - 10 ER - TY - CONF AU - Bloh, Thiemo AU - Bloh, Bea ID - 28005 TI - „Persons in the Shadow“ und ihre Bedeutung für die Entwicklung von Lehrerexpertise ER - TY - CONF AU - Bloh, Thiemo AU - Bloh, Bea AU - van Ophuysen, Stefanie ID - 28007 TI - Professionelle Lerngemeinschaften und Communities of Practice – Unterschiedliche theoretische Ansätze zur Erforschung von Lehrerkooperation ER - TY - CONF AU - Bloh, Bea AU - Schürer, Sina AU - Behrmann, Lars AU - van Ophuysen, Stefanie ID - 28020 TI - Vermittlungsstrategien zum Forschenden Lernen in der Lehrerbildung - Was nutzt der Nutzen? ER - TY - JOUR AU - Gries, Thomas AU - Grundmann, Rainer ID - 2814 IS - 3 JF - Journal of International Development TI - Fertility and Modernization: The Role of Urbanization in Developing Countries VL - 30 ER - TY - GEN AU - Kundisch, Dennis AU - Beverungen, Daniel ID - 2821 TI - Als Wirtschaftsinformatiker die digitale Transformation in Organisationen gestalten ER - TY - CONF AB - We consider a market where final products or services are compositions of a number of basic services. Users are asked to evaluate the quality of the composed product after purchase. The quality of the basic service influences the performance of the composed services but cannot be observed directly. The question we pose is whether it is possible to use user evaluations on composed services to assess the quality of basic services. We discuss how to combine aggregation of evaluations across users and disaggregation of information on composed services to derive valuations for the single components. As a solution we propose to use the (weighted) average as aggregation device in connection with the Shapley value as disaggregation method, since this combination fulfills natural requirements in our context. In addition, we address some occurring computational issues: We give an approximate solution concept using only a limited number of evaluations which guarantees nearly optimal results with reduced running time. Lastly, we show that a slightly modified Shapley value and the weighted average are still applicable if the evaluation profiles are incomplete. AU - Feldotto, Matthias AU - Haake, Claus-Jochen AU - Skopalik, Alexander AU - Stroh-Maraun, Nadja ID - 2831 SN - 978-1-4503-5916-0 T2 - Proceedings of the 13th Workshop on Economics of Networks, Systems and Computation (NetEcon 2018) TI - Disaggregating User Evaluations Using the Shapley Value ER - TY - CONF AU - Schlangenotto, Darius AU - Kundisch, Dennis AU - Poniatowski, Martin ID - 2832 T2 - Proceedings of the 24th Americas Conference on Information Systems (AMCIS) TI - What Drives Paid Search Success: A Systematic Literature Review ER - TY - JOUR AU - Grimminger-Seidensticker, Elke AU - Möhwald, Aiko Julia AU - Korte, J. AU - Trojan, J. ID - 28344 IS - 7 JF - European Journal of Sport Science SN - 1746-1391 TI - Body dissatisfaction in normal weight children – Sports activities and motives for engaging in sports VL - 18 ER - TY - GEN AU - Gausemeier, Jürgen ID - 28361 SN - 978-3-947647-04-0 TI - Vorausschau und Technologieplanung. 14. Symposium für Vorausschau und Technologieplanung, Heinz Nixdorf Institut, 8. und 9. November 2018 VL - 385 ER - TY - CHAP AU - Homt, Martina AU - van Ophuysen, Stefanie ED - Rothland, Martin ED - Biederbeck, Ina ID - 28419 T2 - Praxisphasen in der Lehrerbildung im Fokus der Bildungsforschung TI - Wie kann der Aufbau einer forschenden Grundhaltung im Praxissemester gelingen? Erste Ergebnisse einer qualitativen vergleichenden Fallstudie ER - TY - JOUR AB - An der Westfälischen Wilhelms-Universität Münster gilt Forschendes Lernen als wesentliche Zielsetzung des Praxissemesters. Die Lehramtsstudierenden sollen dazu befähigt werden, mit einer explizit forschenden Grundhaltung zu lernen. Dies erfolgt im Praxissemester insbesondere in Form von drei Studienprojekten, die die Studierenden in drei Projektseminaren planen, unter Begleitung der Dozierenden in der Praxisphase umsetzen und abschließend reflektieren. Im Fokus des Beitrags stehen die Projektseminare aus Sicht der Studierenden. Wie werden diese in den Projektseminaren an die Studienprojekte herangeführt? Welche Erfahrungen machen sie in den verschiedenen Seminaren und wie bewerten sie diese im Hinblick auf die Vorbereitung der Studienprojekte? Zehn Studierende wurden mittels leitfadengestützter Interviews befragt. Die Daten werden inhaltsanalytisch ausgewertet, um die von den Studierenden wahrgenommene Thematisierung und Vorbereitung auf die Studienprojekte in den Projektseminaren abzubilden. Die Befunde weisen auf differente Ausgestaltungen der Projektseminare sowie auf uneinheitliche Anforderungen und Vorstellungen der Dozierenden hinsichtlich der Studienprojekte hin, welche wiederum auf Seiten der Studierenden zu Unklarheiten führen. Es stellt sich die Frage, inwieweit unter diesen Gegebenheiten der Aufbau einer forschenden Grundhaltung gelingen kann. Die Ergebnisse werden im Hinblick auf Implikationen für die weitere Ausgestaltung der universitären Ausbildung im Kontext des Praxissemesters in Anlehnung an Erkenntnisse aus der Implementationsforschung diskutiert. AU - Homt, Martina AU - van Ophuysen, Stefanie ID - 28421 IS - 2 JF - Herausforderung Lehrer_innenbildung. Zeitschrift zur Konzeption, Gestaltung und Diskussion TI - Die Studienprojekte im Praxissemester. Wie nehmen Studierende die universitäre Vorbereitung in den Projektseminaren wahr? VL - 1 ER - TY - CONF AU - Homt, Martina AU - van Ophuysen, Stefanie ID - 28429 TI - Gelingensbedingungen für den Aufbau einer forschenden Grundhaltung im Praxissemester – Die Thematisierung Forschenden Lernens in den Begleitveranstaltungen ER - TY - JOUR AU - Li, Shouwei AU - Markarian, Christine AU - Meyer auf der Heide, Friedhelm ID - 2848 IS - 5 JF - Algorithmica TI - Towards Flexible Demands in Online Leasing Problems. VL - 80 ER - TY - JOUR AU - Abu-Khzam, Faisal N. AU - Markarian, Christine AU - Meyer auf der Heide, Friedhelm AU - Schubert, Michael ID - 2849 JF - Theory of Computing Systems TI - Approximation and Heuristic Algorithms for Computing Backbones in Asymmetric Ad-hoc Networks ER - TY - CONF AU - Hamann, Heiko AU - Markarian, Christine AU - Meyer auf der Heide, Friedhelm AU - Wahby, Mostafa ID - 2850 T2 - Ninth International Conference on Fun with Algorithms (FUN) TI - Pick, Pack, & Survive: Charging Robots in a Modern Warehouse based on Online Connected Dominating Sets ER - TY - CONF AU - Mohr, Felix AU - Lettmann, Theodor AU - Hüllermeier, Eyke AU - Wever, Marcel Dominik ID - 2857 T2 - Proceedings of the 1st ICAPS Workshop on Hierarchical Planning TI - Programmatic Task Network Planning ER - TY - CONF AB - The Digital Transformation alters business models in all fields of application, but not all industries transform at the same speed. While recent innovations in smart products, big data, and machine learn-ing have profoundly transformed business models in the high-tech sector, less digitalized industries—like agriculture—have only begun to capitalize on these technologies. Inspired by predictive mainte-nance strategies for industrial equipment, the purpose of this paper is to design, implement, and evaluate a predictive maintenance method for agricultural machines that predicts future defects of a machine’s components, based on a data-driven analysis of service records. An evaluation with 3,407 real-world service records proves that the method predicts damaged parts with a mean accuracy of 86.34%. The artifact is an exaptation of previous design knowledge from high-tech industries to agriculture—a sector in which machines move through rough territory and adverse weather conditions, are utilized exten-sively for short periods, and do not provide sensor data to service providers. Deployed on a platform, the prediction method enables co-creating a predictive maintenance service that helps farmers to avoid resources shortages during harvest seasons, while service providers can plan and conduct maintenance service preemptively and with increased efficiency. AU - Lüttenberg, Hedda AU - Bartelheimer, Christian AU - Beverungen, Daniel ID - 2861 TI - Designing Predictive Maintenance for Agricultural Machines ER - TY - CONF AU - Blömer, Johannes AU - Eidens, Fabian AU - Juhnke, Jakob ID - 2862 SN - 0302-9743 T2 - Topics in Cryptology - {CT-RSA} 2018 - The Cryptographers' Track at the {RSA} Conference 2018, Proceedings TI - Practical, Anonymous, and Publicly Linkable Universally-Composable Reputation Systems ER - TY - JOUR AU - Eickelmann, Birgit AU - Jarsinski, Sascha ID - 28678 JF - Zeitschrift Schulmagazin TI - Digitale Schulbücher – Fluch oder Segen? Aspekte für die Sekundarstufe I VL - 2 ER - TY - JOUR AU - Eickelmann, Birgit ID - 28679 IS - 1-2 JF - Städte- und Gemeinderat - Fachzeitschrift für Kommunal- und Landespolitik in Nordrhein-Westfalen TI - Schulen in der digitalen Welt – Forschung und Perspektiven VL - 72 ER - TY - JOUR AU - Eickelmann, Birgit AU - Gerick, Julia ID - 28680 IS - 5 JF - SchulVerwaltung NRW TI - Herausforderungen und Zielsetzungen im Kontext der Digitalisierung von Schule und Unterricht. Teil 3: Neue Aufgaben für die Schulleitung VL - 29 ER - TY - JOUR AU - Eickelmann, Birgit AU - Gerick, Julia ID - 28681 IS - 4 JF - SchulVerwaltung NRW TI - Herausforderungen und Zielsetzungen im Kontext der Digitalisierung von Schule und Unterricht. Teil 2: Fünf Dimensionen der Schulentwicklung zur erfolgreichen Integration digitaler Medien VL - 29 ER - TY - JOUR AU - Eickelmann, Birgit AU - Gerick, Julia ID - 28682 IS - 2 JF - SchulVerwaltung NRW TI - Herausforderungen und Zielsetzungen im Kontext der Digitalisierung von Schule und Unterricht. Teil 1: Vier Bereiche des Lernens mit digitalen Medien VL - 29 ER - TY - CONF AU - Bloh, Thiemo ID - 28699 TI - Professionelle Lerngemeinschaften und Kompetenzentwicklung – Eine praxistheoretische Perspektive ER - TY - CHAP AU - Eickelmann, Birgit ED - Voogt, Joke ED - Knezek, Gerald ED - Christensen, Rhonda ED - Lai, Kwok-Wing ID - 28710 SN - 2197-1951 T2 - Second Handbook of Information Technology in Primary and Secondary Education TI - Cross-national policies on information and communication technology in primary and secondary schools – an international perspective ER - TY - CHAP AU - Eickelmann, Birgit ED - Voogt, Joke ED - Knezek, Gerald ED - Christensen, Rhonda ED - Lai, Kwok-Wing ID - 28711 SN - 2197-1951 T2 - Second Handbook of Information Technology in Primary and Secondary Education TI - Section introduction: international policies on information and communication technology in primary and secondary schools ER - TY - CHAP AU - Eickelmann, Birgit ED - McElvany, Nele ED - Schwabe, Franziska ED - Bos, Wilfried ED - Holtappels, Heinz Günter ID - 28712 T2 - Digitalisierung in der schulischen Bildung. Chancen und Herausforderungen TI - Digitalisierung in der schulischen Bildung – Entwicklungen, Befunde und Perspektiven für die Schulentwicklung und die Bildungsforschung ER - TY - CHAP AU - Voogt, Joke AU - Eickelmann, Birgit AU - Labusch, Amelie AU - Yadav, Aman AU - Leftwich, Anne AU - Strijker, Allard AU - Rich, Kathryn AU - Good, Jon AU - Sands, Phil ED - Langran, Elizabeth ED - Borup, Jered ID - 28714 T2 - Proceedings of Society for Information Technology & Teacher Education International Conference TI - Learning and teaching computational thinking – challenges for teacher education ER - TY - JOUR AU - Eickelmann, Birgit AU - Gerick, Julia ID - 28715 IS - 7-8 JF - SchulVerwaltung Hessen/Rheinland-Pfalz TI - Herausforderungen und Zielsetzungen im Kontext der Digitalisierung von Schule und Unterricht. Teil 3: Neue Aufgaben für die Schulleitung VL - 23 ER - TY - JOUR AU - Eickelmann, Birgit AU - Gerick, Julia ID - 28716 IS - 6 JF - SchulVerwaltung Hessen/Rheinland-Pfalz TI - Herausforderungen und Zielsetzungen im Kontext der Digitalisierung von Schule und Unterricht. Teil 2: Fünf Dimensionen der Schulentwicklung zur erfolgreichen Integration digitaler Medien VL - 23 ER - TY - JOUR AU - Eickelmann, Birgit AU - Gerick, Julia ID - 28717 IS - 5 JF - SchulVerwaltung Hessen/Rheinland-Pfalz TI - Herausforderungen und Zielsetzungen im Kontext der Digitalisierung von Schule und Unterricht. Teil 1: Vier Bereiche des Lernens mit digitalen Medien VL - 23 ER - TY - JOUR AU - Gerick, Julia AU - Eickelmann, Birgit ID - 28718 JF - schulmanagement TI - Mobiles Lernen und BYOD an Gemeinschaftsschulen. Voraussetzungen und Potenziale aus Sicht der Schulentwicklung VL - 3 ER - TY - JOUR AU - Eickelmann, Birgit ID - 28719 IS - 5 JF - Neue Deutsche Schule TI - IT-Ausstattung und -Support in Schule. Pädagogische Prozesse geben den Takt vor ER - TY - JOUR AB - Aufgrund gesellschaftlicher Veränderungen und der steigenden Relevanz eines kompetenten, selbstbestimmten und reflektierten Umgangs mit digitalen Medien, ergeben sich auch für Schulen neue Herausforderungen, den Erwerb entsprechender Kompetenzen zu unterstützen. Studien deuten bzgl. des Kompetenzerwerbs auf Disparitäten zwischen Mädchen und Jungen hin – Mädchen schneiden in computer- und informationsbezogenen Kompetenzen besser ab und geben zu höheren Anteilen an, diese Kompetenzen schulisch erworben zu haben. Hinsichtlich der Vermittlung dieser Kompetenzen deuten aktuelle Entwicklungen darauf hin, dass Schulen vermehrt auf 1:1-Ausstattung mit digitalen Medien setzen, da vor allem schülereigenen mobilen Endgeräten vielseitige Potenziale zugeschrieben werden. Der Beitrag fokussiert daher auf Grundlage eines Tablets-Projekts die Frage, ob die Einführung schülereigener Tablets den schulischen Kompetenzerwerb für Mädchen und Jungen tatsächlich unterstützt. Im Ergebnis zeigt sich, dass die Einführung von Tablets nicht automatisch dazu führt, dass Mädchen und Jungen gleichermaßen einen schulischen Kompetenzerwerb wahrnehmen. AU - Massek, Corinna AU - Drossel, Kerstin AU - Eickelmann, Birgit ID - 28723 JF - Medienimpulse TI - Eine geschlechtsspezifische Analyse zum schulischen Erwerb computerbezogener Kompetenzen in Tablet-Klassen am Gymnasium VL - 4 ER - TY - JOUR AU - Irion, Thomas AU - Eickelmann, Birgit ID - 28724 IS - 7 JF - Zeitschrift Grundschule TI - Digitale Bildung in der Grundschule: 7 Handlungsansätze. Basisartikel ER - TY - JOUR AU - Eickelmann, Birgit ID - 28725 IS - 4 JF - SchulVerwaltung Spezial TI - Digitalisierung an Schulen. Eine Bestandsaufnahme VL - 20 ER - TY - JOUR AU - Eickelmann, Birgit ID - 28726 IS - 2 JF - Zeitschrift für Bildungsverwaltung TI - Schulen und Lehrerbildung in der digitalen Welt – Thesen zwischen Hype und Zukunftsfähigkeit VL - 29 ER - TY - BOOK AU - Cress, Ulrike AU - Diethelm, Ira AU - Eickelmann, Birgit AU - Köller, Olaf AU - Nickolaus, Reinhold AU - Pant, Hans Anand AU - Reiss, Kristina ID - 28727 TI - Schule in der digitalen Transformation. Perspektiven der Bildungswissenschaften ER - TY - BOOK AU - Gerick, Julia AU - Vennemann, Mario AU - Eickelmann, Birgit AU - Bos, Wilfried AU - Mews, Sina ID - 28729 TI - ICILS 2013 – Dokumentation der Erhebungsinstrumente der International Computer and Information Literacy Study ER - TY - JOUR AU - Eickelmann, Birgit AU - Drossel, Kerstin ID - 28730 JF - SchulVerwaltung NRW TI - Digitale Medien in TIMSS 2015 und IGLU 2016. Ergebnisse zur Nutzung und zum Stellenwert von Lehrerfortbildungen für Grundschulen in Deutschland im internationalen Vergleich ER - TY - JOUR AU - Eickelmann, Birgit ID - 28731 IS - 5 JF - SchulVerwaltung Spezial TI - Schulisches Lernen und Lehren in der digitalen Gesellschaft. Schule und Unterricht zukunftsfähig gestalten VL - 20 ER - TY - CONF AU - Urbanek, Stefan AU - Ponick, Bernd AU - Taube, Alexander AU - Hoyer, Kay-Peter AU - Schaper, Mirko AU - Lammers, Stefan AU - Lieneke, Tobias AU - Zimmer, Detmar ID - 24105 T2 - 2018 IEEE Transportation Electrification Conference and Expo (ITEC) TI - Additive Manufacturing of a Soft Magnetic Rotor Active Part and Shaft for a Permanent Magnet Synchronous Machine ER - TY - GEN ED - Eiber, Marion ED - Richard, Hans Albert ID - 24115 TI - Einfluss unterschiedlicher Pulvereigenschaften beim selektiven Laserstrahlschmelzen von TiAl6V4 auf die Werkstoffeigenschaften ER - TY - GEN ED - Eiber, Marion ED - Richard, Hans Albert ID - 24116 TI - Metallische Legierungssysteme für die additive Fertigung belastungsangepasster Implantate ER - TY - JOUR AU - Inguva, Venkatesh AU - Kathuria, Sagar V. AU - Bilsel, Osman AU - Perot, Blair James ED - Dao, Ming ID - 24121 JF - PLOS ONE SN - 1932-6203 TI - Computer design of microfluidic mixers for protein/RNA folding studies ER - TY - JOUR AU - Bader, Shujaut H. AU - Inguva, Venkatesh AU - Perot, J. B. ID - 24123 JF - Wind Energy SN - 1095-4244 TI - Improving the efficiency of wind farms via wake manipulation ER - TY - JOUR AU - Inguva, Venkatesh AU - Rothstein, Jonathan P. AU - Bilsel, Osman AU - Perot, Blair J. ID - 24124 JF - Experiments in Fluids SN - 0723-4864 TI - High-speed velocimetry in microfluidic protein mixers using confocal fluorescence decay microscopy ER - TY - JOUR AU - Ramaswamy, Arunselvan AU - Bhatnagar, Shalabh ID - 24150 IS - 6 JF - IEEE Transactions on Automatic Control TI - Stability of stochastic approximations with “controlled markov” noise and temporal difference learning VL - 64 ER - TY - JOUR AU - Demirel, Burak AU - Ramaswamy, Arunselvan AU - Quevedo, Daniel E AU - Karl, Holger ID - 24151 IS - 4 JF - IEEE Control Systems Letters TI - Deepcas: A deep reinforcement learning algorithm for control-aware scheduling VL - 2 ER - TY - CONF AB - In this poster, we present the first experimental results of our OFDM-based Vehicular VLC (V-VLC) prototype. Our Bit Error Rate (BER) measurements show that for lower Modulation and Coding Schemes (MCS), the performance of our hardware-setup roughly behaves the same as it does in simulation for AWGN channel. However, for higher order MCS with high PAPR, the BER performance gets degraded due to non-linear behavior of LEDs, and deviates further from AWGN performance as the MCS order is increased. The obtained results suggest that unlike RF-Communications, where the focus is usually towards linearity of the amplifiers, for V-VLC, linearity within the whole system is required to achieve optimal performance. AU - Koepe, Jörn AU - Kaltschmidt, Christian AU - Illian, Marvin AU - Puknat, Robert AU - Kneuper, Pascal AU - Wittemeier, Steffen AU - Memedi, Agon AU - Tebruegge, Claas AU - Amjad, Muhammad Sohaib AU - Kruse, Stephan AU - Kress, Christian AU - Scheytt, Christoph AU - Dressler, Falko ID - 24185 T2 - 2018 IEEE Vehicular Networking Conference (VNC) TI - First Performance Insights on Our Noval OFDM-based Vehicular VLC Prototype ER - TY - CONF AB - A 2nd transconductance subharmonic receiver for 245 GHz spectroscopy sensor applications has been proposed. The receiver consists of a 245 GHz on-chip folded dipole antenna, a CB (common base) LNA, a 2nd transconductance SHM (subharmonic mixer), and a 120 GHz push-push VCO with 1/64 divider. The receiver is fabricated in fT/fmax = 300/500 GHz SiGe:C BiCMOS technology. The receiver dissipates a low power of 288 mW. Integrated with the on-chip antenna, the receiver is measured on-chip with a conversion gain of 15 dB, a bandwidth of 15 GHz, and the chip will be utilized in PCB board design for gas spectroscopy sensor application. AU - Mao, Yanfei AU - Shiju, E. AU - Schmalz, Klaus AU - Scheytt, Christoph ID - 24186 T2 - Journal of Semiconductors TI - 245 GHz Subharmonic Receiver With Onchip Antenna for Gas Spectroscopy Application ER - TY - CONF AB - We present a transmitter circuit to drive a commercial Light Emitting Diode (LED)-based headlight for automotive Visible Light Communication (VLC). Based on the design of the presented transmitter (TX), we provide a design methodology for VLC TXs and make it available as Open Hardware. Furthermore, a complete wireless VLC link is built using the GNU Radio signal processing tool chain and demonstrated on an Universal Software Radio Peripheral (USRP). The Total Harmonic Distortion (THD) of the system is below 5% for a wide input voltage range and the 1 dB compression point (P1dB) is at 1.02V, which makes the circuit attractive for more advanced modulation formates like Orthogonal Frequency Division Multiplexing (OFDM) or Pulse-Amplitude Modulation (PAM). AU - Kruse, Stephan AU - Kress, Christian AU - Memedi, Agon AU - Tebruegge, Claas AU - Amjad, Muhammad Sohaib AU - Scheytt, Christoph AU - Dressler, Falko ID - 24190 T2 - ANALOG 2018 16. GMM/ITG-Fachtagung TI - Design of an Automotive Visible Light Communications Link using a Off-The-Shelf LED Headlight ER - TY - CONF AB - The terahertz frequency range provides abundant bandwidth (25GHz ~ 50 GHz) to achieve ultra-high-speed wireless communication and enables data rates up to and above 100 Gbps. We choose Parallel Sequence Spread Spectrum (PSSS) as an analog friendly modulation and coding scheme that allows for an efficient mixed-signal implementation of a 100 Gbps wireless communication system. In our system design, we require a DAC (Digital to Analog converters) running at 1.67 G symbols/sec. The optimization of the bit resolution of this DAC will considerably reduce the hardware implementation efforts. In this work, we presented the analytical model for PSSS modulation and deduced a mathematical formula to calculate the number of discrete level amplitudes along with their probability distribution appearing at the output of the PSSS modulated signal. The analytical analysis assists in predicting the number of the quantization level of the DAC needed at the PSSS transmitter. The theoretical analysis shows that there are in total 225 discrete levels at the output of the PSSS encoder which leads to an 8-bit resolution of DAC. In this paper, we analyzed the variation of BER (Bit Error Rate) to the clipping of low probability amplitude levels and found that there is an only slight increase of the BER when we clip off the low probability amplitude levels. Thus, there is a tradeoff involved in a minor growth of BER concerning the reduction of the DAC bit resolution. Finally, we can reduce the DAC bit resolution from 8 bits to 7 bits and thus simplify the hardware implementation efforts of DAC operating at 1.67 Gbps. AU - Karthik, KrishneGowda AU - Wimmer, Lara AU - Javed, Abdul Rehman AU - Wolf, Andreas AU - Scheytt, Christoph AU - Kraemer, Rolf ID - 24192 T2 - 15th International Symposium on Wireless Communication Systems (ISWCS) TI - Analysis of PSSS modulation for optimization of DAC bit resolution for 100 Gbps systems ER - TY - CONF AB - A complete system analysis for an integrated passive RFID transponder designed at 5.8 GHz range is presented, and a comprehensive set of design concerns for the rectifier circuit as the core of the harvesting block is also discussed. The system analysis is complemented by transistor-level design and simulation of harvesting circuits in a commercial 65 nm CMOS technology. A differential drive rectifier (DDR) has been selected as the most efficient harvesting topology for microwave frequency applications, which works at very low input power levels. The circuit was designed and simulated including chip layout parasitics and antenna matching circuitry. Considering the power budget of the tag chip, a power conversion efficiency of roughly 68.4% is achieved in simulation for an input RF power of around -11.26dBm. AU - Haddadian, Sanaz AU - Scheytt, Christoph ID - 24193 T2 - Electromagnetics Research Symposium TI - Wireless Energy Harvesting in RFID Applications at 5.8 GHz ISM Band, a System Analysis VL - 40th ER - TY - JOUR AU - Adelt, Peer AU - Koppelmann, Bastian AU - Müller, Wolfgang ID - 24194 JF - International Workshop on RISC-V Research Activities TI - Current and Future RISC-V Activities for Virtual Prototyping and Chip Design VL - Presentation ER - TY - CONF AB - This paper demonstrates system level analysis of an energy efficient Radio Frequency (RF) receiver. The receiver is based on a Surface Acoustic Wave (SAW) correlator which is used for highly linear demodulation and interferer suppression in conjunction with envelope detection for ultra-low power dissipation and hardware efficiency. The receiver is to be used in Wireless Sensor Networks (WSN) as a Wake-up Receiver (WuR) to reduce the network nodes power dissipation and provide asynchronous data communication. Low latency and high interference robustness makes this scheme interesting for industrial real-time applications. In this paper, the SAW correlator transfer function is derived, which functions as a Matched Filter (MF). Since the receiver uses envelope detection and based on the characteristic of the SAW, the receiver sensitivity is analyzed by means of a non-linear approach. AU - Abughannam, Saed AU - Scheytt, Christoph ID - 24195 T2 - 2nd URSI AT-RASC TI - System Analysis of a Wake-Up Receiver Based on Surface Acoustic Wave Correlator ER - TY - CONF AB - This paper presents an approach for analog fault effect simulation automation based on random fault selection with a high fault coverage of the circuit under test by means of fault injection and simulation based on advanced sampling techniques. The random fault selection utilizes the likelihood of the fault occurrence of different electrical components in the circuit with a confidence level. Defect models of different devices are analyzed for the calculation of the fault probability. A case study with our implemented tool demonstrates that likelihood calculation and fault simulation provides means for efficient fault effect simulation automation. AU - Wu, Liang AU - Hussain, Mohammad Khizer AU - Abughannam, Saed AU - Müller, Wolfgang AU - Scheytt, Christoph AU - Ecker, Wolfgang ID - 24196 T2 - 2018 13th International Conference on Design & Technology of Integrated Systems In Nanoscale Era (DTIS)) TI - Analog fault simulation automation at schematic level with random sampling techniques ER - TY - GEN AU - Scheytt, Christoph AU - Wu, Liang ID - 24198 TI - Integrier‐ und Halte‐Schaltung ER - TY - CONF AB - This work describes a dielectric sensing system applying a 120 GHz electrical interferometer for contactless permittivity measurements. The applied IC was fabricated in a 130 nm SiGe process featuring an ft and fmax of 240 GHz and 330 GHz. The on-chip system contains a 120 GHz VCO with a tuning range of 7 GHz featuring a divide-by-64 circuit to enable external PLL operation. An important feature of the IC is high-precision and high-resolution phase shifting based on a slow-wave transmission lines approach with digital control. This allows for direct digital readout ability. The on chip power detector provides DC output signals giving the opportunity to record transfer functions of the interferometer. It enables sample emulation capability by phase shift inducement in the measurement as well as a reference transmission line. The motherboard of the system provides PLL stabilization for frequency sweeps. The proposed approach is capable of automated dielectric monitoring by phase compensation. AU - Wessel, Jan AU - Schmalz, Klaus AU - Scheytt, Christoph AU - Kissinger, Dietmar ID - 24199 SN - 2164-2974 T2 - 2018 IEEE Radio and Wireless Symposium (RWS) TI - Sensitive permittivity detector for dielectric samples at 120 GHz ER - TY - CONF AB - We study the Online Prize-collecting Node-weighted Steiner Forest problem (OPC-NWSF) in which we are given an undirected graph \(G=(V, E)\) with \(|V| = n\) and node-weight function \(w: V \rightarrow \mathcal {R}^+\). A sequence of k pairs of nodes of G, each associated with a penalty, arrives online. OPC-NWSF asks to construct a subgraph H such that each pair \(\{s, t\}\) is either connected (there is a path between s and t in H) or its associated penalty is paid. The goal is to minimize the weight of H and the total penalties paid. The current best result for OPC-NWSF is a randomized \(\mathcal {O}(\log ^4 n)\)-competitive algorithm due to Hajiaghayi et al. (ICALP 2014). We improve this by proposing a randomized \(\mathcal {O}(\log n \log k)\)-competitive algorithm for OPC-NWSF, which is optimal up to constant factor since OPC-NWSF has a randomized lower bound of \(\varOmega (\log ^2 n)\) due to Korman [11]. Moreover, our result also implies an improvement for two special cases of OPC-NWSF, the Online Prize-collecting Node-weighted Steiner Tree problem (OPC-NWST) and the Online Node-weighted Steiner Forest problem (ONWSF). In OPC-NWST, there is a distinguished node which is one of the nodes in each pair. In ONWSF, all penalties are set to infinity. The currently best known results for OPC-NWST and ONWSF are a randomized \(\mathcal {O}(\log ^3 n)\)-competitive algorithm due to Hajiaghayi et al. (ICALP 2014) and a randomized \(\mathcal {O}(\log n \log ^2 k)\)-competitive algorithm due to Hajiaghayi et al. (FOCS 2013), respectively. AU - Markarian, Christine ID - 24396 SN - 0302-9743 T2 - International Workshop on Combinatorial Algorithms (IWOCA) TI - An Optimal Algorithm for Online Prize-Collecting Node-Weighted Steiner Forest ER - TY - THES AU - Hopp, Matthias ID - 24527 TI - Verfahrenstechnische Entwicklung zum Kleben von WPC für Anwendungsgebiete aus dem Holz-/Kunststoffbereich ER - TY - JOUR AU - Philipp, Matthias AU - Schumm, Gregor AU - Heck, Patrick AU - Schlosser, Florian AU - Peesel, Ron-Hendrik AU - Walmsley, Timothy G. AU - Atkins, Martin J. ID - 24635 JF - Energy SN - 0360-5442 TI - Increasing energy efficiency of milk product batch sterilisation ER - TY - CONF AU - Seevers, Jan-Peter AU - Schlosser, Florian AU - Hechelmann, Ron-Hendrik AU - Hesselbach, Jens ID - 24667 T2 - Chemical Engineering Transactions TI - Dimensioning of Heat Pump Systems Based on Pinch Analysis and Energy Monitoring Data VL - 70 ER - TY - CONF AU - Hechelmann, Ron-Hendrik AU - Schlosser, Florian AU - Schaumburg, Christian AU - Meschede, Henning AU - Dunkelberg, Heiko AU - Walmsley, Timothy G. ID - 24668 T2 - Chemical Engineering Transactions TI - Predictive Simulation-based Optimisation of Cooling System Including a Sprinkler Tank ER - TY - CONF AU - Schlosser, Florian AU - Dunkelberg, Heiko AU - Veitengruber, Frank AU - Meschede, Henning AU - Pag, Felix AU - Schmitt, Bastian ID - 24679 TI - Experimental Assessment of Solar Process heat Potential of German Plastic Injection Moulders ER - TY - CONF AU - Mohr, Felix AU - Wever, Marcel Dominik AU - Hüllermeier, Eyke ID - 2471 T2 - SCC TI - On-The-Fly Service Construction with Prototypes ER - TY - CONF AU - Auroux, Sébastien AU - Karl, Holger ID - 2472 TI - Distributed Placement of Virtualized Control Applications in Mobile Backhaul Networks ER - TY - CONF AU - Gutt, Dominik ID - 2564 T2 - Proceedings of the 25th European Conference on Information Systems (ECIS) TI - In the Eye of the Beholder? – Empirically Decomposing Different Economic Implications of the Online Rating Variance ER - TY - GEN AB - This note deals with agreeability in nontransferable utility (NTU) differential games. We introduce state feedback Pareto weights to enrich the set of efficient cooperative solutions. The framework is particularly useful if constant weights fail to support agreeability, but cooperation is desired nonetheless. The concept is applied to an adverting differential game. AU - Hoof, Simon ID - 2565 KW - NTU differential games KW - variable Pareto weights KW - agreeability TI - Feedback Pareto weights in cooperative NTU differential games VL - 112 ER - TY - JOUR AB - We show that the Boston school choice mechanism (BM), the student proposing deferred acceptance algorithm (DA) and the top trading cycles algorithm (TTC) generate the same outcome when the colleges’ priorities are modified according to students’ preferences in a “first preferences first” manner. This outcome coincides with the BM outcome under original priorities. As a result, the DA and TTC mechanism that are non-manipulable under original priorities become vulnerable to strategic behavior. AU - Haake, Claus-Jochen AU - Stroh-Maraun, Nadja ID - 2566 JF - Economics Letters TI - Outcome Equivalence in School Choice with Reciprocal Preferences VL - 170 ER - TY - CONF AU - Moritzer, Elmar AU - Budde, Christopher AU - Hüttner, Matthias AU - Krassmann, Dimitri ID - 25784 TI - Spritznieten als neuartige Fügetechnik für Organoblech-Metall-Hybridverbindungen ER - TY - CONF AU - Moritzer, Elmar AU - Budde, Christopher AU - Hüttner, Matthias AU - Krassmann, Dimitri ID - 25785 TI - Stempelnieten als neuartige Fügetechnik für Organoblech-Metall-Hybridverbindungen ER - TY - GEN ED - Moritzer, Elmar ED - Budde, Christopher ED - Hüttner, Matthias ED - Krassmann, Dimitri ID - 25787 TI - Spritznieten als neuartige Fügetechnik für Organoblech-Metall-Hybridverbindungen ER - TY - GEN ED - Moritzer, Elmar ED - Budde, Christopher ED - Hüttner, Matthias ED - Krassmann, Dimitri ID - 25788 TI - Stempelnieten als neuartige Fügetechnik für Organoblech-Metall-Hybridverbindungen ER -