@inproceedings{21803, author = {{Tews, Karina and Aubel, Tobias and Teutenberg, Dominik and Meschut, Gerson and Duffe, Tobias and Kullmer, Gunter}}, booktitle = {{DECHEMA, Gesellschaft für Chemische Technik und Biotechnologie e.V. (Ed.), 21. Kolloquium: Gemeinsame Forschung in der Klebtechnik}}, title = {{{Methodenentwicklung zur numerischen Lebensdauerprognose von hyperelastischen Klebverbindungen infolge zyklischer Beanspruchung mittels bruchmechanischer Ansätze}}}, year = {{2021}}, } @article{41909, abstract = {{The continuous development of medical methods in recent decades has achieved measurable improvement. The interdisciplinary cooperation of engineers and physicians is a forward-looking component of this development. However, this cooperation also results in new interfaces on the communication and software level, which must be defined by implementing a systematic workflow. In this paper, the step-by-step implementation of engineering methods into the surgical workflow is shown. The focus is on the basic requirements and the necessary exchange of information. Additively manufactured models for preoperative elucidation of the patient are used as a psychological added value to increase the transparency of the surgical procedure. In addition, the models serve to train young surgeons and provide the opportunity to plan advanced surgical techniques.}}, author = {{Risse, Lena and Kullmer, Gunter}}, issn = {{2059-4755}}, journal = {{Journal of 3D Printing in Medicine}}, keywords = {{General Medicine}}, number = {{2}}, pages = {{111--121}}, publisher = {{Future Medicine Ltd}}, title = {{{Application of engineering methods in the planning process of surgical treatments}}}, doi = {{10.2217/3dp-2020-0020}}, volume = {{5}}, year = {{2021}}, } @inproceedings{41910, author = {{Duffe, Tobias and Schramm, Britta and Kullmer, Gunter}}, pages = {{157--166}}, publisher = {{Deutscher Verband für Materialforschung und –prüfung e.V.}}, title = {{{Experimentelle Ermittlung von Rissfortschrittskurven für hyperelastische Klebstoffe}}}, doi = {{10.48447/BR-2021-018}}, volume = {{DVM-Bericht 253}}, year = {{2021}}, } @inproceedings{29499, author = {{Duffe, Tobias and Kullmer, Gunter and Tews, Karina and Aubel, Tobias and Meschut, Gerson}}, booktitle = {{51. DVM-Tagung, Arbeitskreis Bruchmechanik und Bauteilsicherung}}, title = {{{Bruchmechanische Lebensdauervorhersage für hyperelastische Klebverbindungen}}}, year = {{2021}}, } @inproceedings{29899, abstract = {{LLC resonant converters are typically unsuitable to be applied for wide voltage-transfer ratio applications. With a full-bridge inverter, however, they can be operated in a variety of different modulations. Most notably, by permanently turning on one MOSFET and turning off the other MOSFET of the same bridge leg, the LLC can be operated in half-bridge configuration reducing the gain by a factor of two. The resonant capacitor is hereby charged to an average voltage of half the input voltage. In this modulation, however, the switch that is permanently turned on is stressed by the complete resonant current while exhibiting no switching losses. This paper proves that the frequency-doubler modulation can better balance the losses among all MOSFETs and should be the preferred mode of operation favored over the conventional half-bridge modulation. This paper analyzes the beneficial loss distribution, proposes an on-the-fly morphing modulation and discusses potential operating strategies to further reduce the junction temperature. Furthermore, it is shown that this modulation can also be altered to achieve the asymmetrical LLC operation. Experimental measurement results show that the modulation results in a substantial decrease of the maximum MOSFET temperature and shows that the converter can be smoothly transitioned during operation from full-bridge modulation to the frequency-doubler half-bridge operation and back.}}, author = {{Rehlaender, Philipp and Unruh, Roland and Hankeln, Lars and Schafmeister, Frank and Böcker, Joachim}}, booktitle = {{23rd European Conference on Power Electronics and Applications (EPE'21 ECCE Europe)}}, isbn = {{978-9-0758-1537-5}}, keywords = {{Resonant converter, High frequency power converter, Switched-mode power supply, Converter control, Control methods for electrical systems}}, location = {{Ghent, Belgium}}, publisher = {{IEEE}}, title = {{{Frequency-Doubler Modulation for Reduced Junction Temperatures for LLC Resonant Converters Operated in Half-Bridge Configuration}}}, doi = {{10.23919/EPE21ECCEEurope50061.2021.9570674}}, year = {{2021}}, } @phdthesis{42013, author = {{Stolbchenko, Mykhailo }}, isbn = {{978-3-8440-7971-5}}, publisher = {{Shaker Verlag}}, title = {{{Zwei-Rollen-Gießwalzen und thermomechanische Behandlung von dünnen Bändern aus der Aluminiumlegierung EN AW-6082}}}, year = {{2021}}, } @article{41940, author = {{Lang, Susanne and Topalović, Elvira}}, journal = {{In: Praxis Deutschunterricht}}, pages = {{30--35}}, title = {{{Komplexe Wörter richtig schreiben. Wortanalyse als Rechtschreibstrategie.}}}, volume = {{4}}, year = {{2021}}, } @article{41939, author = {{Noack, Christina and Topalović, Elvira}}, journal = {{ In: Praxis Deutschunterricht}}, pages = {{4--10}}, title = {{{Rechtschreibstrategien und Sprachstrukturen.}}}, volume = {{4}}, year = {{2021}}, } @phdthesis{42141, author = {{Sonnenrein, Gerrit}}, title = {{{Effizienzsteigerung von Haushaltskühlgeräten durch polymergebundene Phasenwechselmaterialien}}}, year = {{2021}}, } @phdthesis{42069, author = {{Lankeit, Christopher}}, title = {{{Systematik zur Evolution technischer Anforderungen}}}, year = {{2021}}, } @book{42250, author = {{Eckel, Julia}}, isbn = {{ 978-3-8394-5320-9}}, pages = {{380}}, publisher = {{transcript}}, title = {{{ Das Audioviduum. Eine Theoriegeschichte des Menschenmotivs in audiovisuellen Medien}}}, year = {{2021}}, } @book{42305, author = {{Elshahawy, Ahmed}}, publisher = {{LIT Verlag}}, title = {{{Islamischer Religionsunterricht. Beitrag zu einem friedlichen Zusammenleben}}}, year = {{2021}}, } @article{42279, author = {{Abdelrahem, Mohammed and Abdallah, Ali and Pasqualone, Antonella}}, journal = {{Journal of Ethnic Foods}}, title = {{{The multiplicity of halal standards: a case study of application to slaughterhouses}}}, year = {{2021}}, } @phdthesis{28370, author = {{Kohlstedt, Andreas}}, isbn = {{978-3-947647-15-6}}, publisher = {{Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn}}, title = {{{Modellbasierte Synthese einer hybriden Kraft-/Positionsregelung für einen Fahrzeugachsprüfstand mit hydraulischem Hexapod}}}, volume = {{396}}, year = {{2021}}, } @phdthesis{42529, author = {{Keck, Stefan}}, isbn = {{978-3-18-335418-4}}, issn = {{0178-9457}}, pages = {{124}}, title = {{{Rissverhalten von unidirektionalen Flachsfaser-Epoxidharz-Verbunden infolge statischer Belastung}}}, volume = {{354}}, year = {{2021}}, } @article{31666, author = {{Schreiber, Christine and Scharlau, Ingrid and Patrzek, Justine}}, journal = {{Psychologieunterricht}}, keywords = {{Unterrichtsfach Psychologie}}, pages = {{19 -- 21}}, title = {{{„Power Poses“ – Fakten, frisierte Daten, Forschungslyrik? Ein Unterrichtsvorhaben zu Praktiken und Darstellungsformen psychologischer Forschung am Beispiel von nonverbaler Kommunikation}}}, year = {{2021}}, } @inproceedings{24547, abstract = {{Over the last years, several approaches for the data-driven estimation of expected possession value (EPV) in basketball and association football (soccer) have been proposed. In this paper, we develop and evaluate PIVOT: the first such framework for team handball. Accounting for the fast-paced, dynamic nature and relative data scarcity of hand- ball, we propose a parsimonious end-to-end deep learning architecture that relies solely on tracking data. This efficient approach is capable of predicting the probability that a team will score within the near future given the fine-grained spatio-temporal distribution of all players and the ball over the last seconds of the game. Our experiments indicate that PIVOT is able to produce accurate and calibrated probability estimates, even when trained on a relatively small dataset. We also showcase two interactive applications of PIVOT for valuing actual and counterfactual player decisions and actions in real-time.}}, author = {{Müller, Oliver and Caron, Matthew and Döring, Michael and Heuwinkel, Tim and Baumeister, Jochen}}, booktitle = {{8th Workshop on Machine Learning and Data Mining for Sports Analytics (ECML PKDD 2021)}}, keywords = {{expected possession value, handball, tracking data, time series classification, deep learning}}, location = {{Online}}, title = {{{PIVOT: A Parsimonious End-to-End Learning Framework for Valuing Player Actions in Handball using Tracking Data}}}, year = {{2021}}, } @inproceedings{25029, abstract = {{In early 2021, the finance world was taken by storm by the dramatic price surge of the GameStop Corp. stock. This rise is being, at least in part, attributed to a group of Redditors belonging to the now-famous r/wallstreetbets (WSB) subreddit group. In this work, we set out to address if user activity on the WSB subreddit is associated with the trading volume of the GME stock. Leveraging a unique dataset containing more than 4.9 million WSB posts and comments, we assert that user activity is associated with the trading volume of the GameStop stock. We further show that posts have a significantly higher predictive power than comments and are especially helpful for predicting unusually high trading volume. Lastly, as recent events have shown, we believe that these findings have implications for retail and institutional investors, trading platforms, and policymakers, as these can have disruptive potential.}}, author = {{Caron, Matthew and Gulenko, Maryna and Müller, Oliver}}, booktitle = {{42nd International Conference on Information Systems (ICIS 2021)}}, keywords = {{Retail investors, GameStop, Social Networks, Reddit, WallStreetBets}}, location = {{Austin, Texas}}, title = {{{To the Moon! Analyzing the Community of “Degenerates” Engaged in the Surge of the GME Stock}}}, year = {{2021}}, } @article{29780, abstract = {{A central tenet of theoretical cryptography is the study of the minimal assumptions required to implement a given cryptographic primitive. One such primitive is the one-time memory (OTM), introduced by Goldwasser, Kalai, and Rothblum [CRYPTO 2008], which is a classical functionality modeled after a non-interactive 1-out-of-2 oblivious transfer, and which is complete for one-time classical and quantum programs. It is known that secure OTMs do not exist in the standard model in both the classical and quantum settings. Here, we propose a scheme for using quantum information, together with the assumption of stateless (i.e., reusable) hardware tokens, to build statistically secure OTMs. Via the semidefinite programming-based quantum games framework of Gutoski and Watrous [STOC 2007], we prove security for a malicious receiver making at most 0.114n adaptive queries to the token (for n the key size), in the quantum universal composability framework, but leave open the question of security against a polynomial amount of queries. Compared to alternative schemes derived from the literature on quantum money, our scheme is technologically simple since it is of the "prepare-and-measure" type. We also give two impossibility results showing certain assumptions in our scheme cannot be relaxed.}}, author = {{Broadbent, Anne and Gharibian, Sevag and Zhou, Hong-Sheng}}, issn = {{2521-327X}}, journal = {{Quantum}}, keywords = {{Physics and Astronomy (miscellaneous), Atomic and Molecular Physics, and Optics}}, publisher = {{Verein zur Forderung des Open Access Publizierens in den Quantenwissenschaften}}, title = {{{Towards Quantum One-Time Memories from Stateless Hardware}}}, doi = {{10.22331/q-2021-04-08-429}}, volume = {{5}}, year = {{2021}}, } @inbook{38153, author = {{Fuchs, Christian}}, booktitle = {{The Public Service Media and Public Service Internet Manifesto}}, editor = {{Fuchs, Christian and Unterberger, Klaus}}, pages = {{19--68}}, publisher = {{University of Westminster Press}}, title = {{{The Public Service Media and Public Service Internet Utopias Survey Report}}}, doi = {{https://doi.org/10.16997/book60.c}}, year = {{2021}}, }