@inproceedings{23726, author = {{Marx, J. and Mirbabaie, Milad and Brendel, A.B. and Zander, K.}}, booktitle = {{The Americas Conference on Information Systems}}, title = {{{The Role of Parasocial Interactions for Podcast Backchannel Response}}}, year = {{2021}}, } @inproceedings{23730, author = {{Castenow, Jannik and Harbig, Jonas and Jung, Daniel and Knollmann, Till and Meyer auf der Heide, Friedhelm}}, booktitle = {{Proceedings of the 17th International Symposium on Algorithms and Experiments for Wireless Sensor Networks (ALGOSENSORS)}}, editor = {{Gasieniec, Leszek and Klasing, Ralf and Radzik, Tomasz}}, location = {{Lissabon}}, pages = {{29 -- 44}}, publisher = {{Springer}}, title = {{{Gathering a Euclidean Closed Chain of Robots in Linear Time}}}, doi = {{10.1007/978-3-030-89240-1_3}}, volume = {{12961}}, year = {{2021}}, } @inbook{23734, author = {{Lammers, Stefan and Kruse, Anne and Gierse, Jan and Tominski, Johannes and Lindemann, Christian-Friedrich}}, booktitle = {{Mehrzieloptimierte und durchgängig automatisierte Bauteilentwicklung für Additive Fertigungsverfahren im Produktentstehungsprozess}}, editor = {{Koch, Rainer and Zimmer, Detmar and Tröster, Thomas and Gräßler, Iris}}, isbn = {{978-3-8440-7932-6}}, title = {{{Konstruktionsrichtlinien in der Produktentwicklung}}}, year = {{2021}}, } @inproceedings{23760, abstract = {{The laser sintering process has been a well-established AM process for many years. Disadvantages of LS are the low material variety and the thermal damage of the unprocessed material. The low temperature laser sintering attacks at this point and processes powder material at a build chamber temperature lower than the recrystallization temperature. This drastic reduction in temperature results in significantly less thermal damage to the material. This work deals with the low temperature laser sintering of Polyamide 12 (PA12) on a commercial, unmodified laser sintering system to compare it to standard laser sintered PA12 and to create the basis for low temperature laser sintering of high temperature materials on such a system. First results by changing the exposure parameters and by fixing parts on a building platform show a processing of PA12 on an EOS P396 at a build chamber temperature less than 100 °C instead of standard approx. 175 °C.}}, author = {{Menge, Dennis and Schmid, Hans-Joachim}}, keywords = {{Low Temp LS, Low Temperature Laser Sintering, Polyamid 12}}, location = {{Austin, TX}}, title = {{{Low Temperature Laser Sintering on a Standard System: First Attempts and Results with PA12}}}, year = {{2021}}, } @inproceedings{23779, abstract = {{Produktentstehung (PE) bezieht sich auf den Prozess der Planung und Entwicklung eines Produkts sowie der damit verbundenen Dienstleistungen von der ersten Idee bis zur Herstellung und zum Vertrieb. Während dieses Prozesses gibt es zahlreiche Aufgaben, die von menschlichem Fachwissen abhängen und typischerweise von erfahrenen Experten übernommen werden. Da sich das Feld der Künstlichen Intelligenz (KI) immer weiterentwickelt und seinen Weg in den Fertigungssektor findet, gibt es viele Möglichkeiten für eine Anwendung von KI, um bei der Lösung der oben genannten Aufgaben zu helfen. In diesem Paper geben wir einen umfassenden Überblick über den aktuellen Stand der Technik des Einsatzes von KI in der PE. Im Detail analysieren wir 40 bestehende Surveys zu KI in der PE und 94 Case Studies, um herauszufinden, welche Bereiche der PE von der aktuellen Forschung in diesem Bereich vorrangig adressiert werden, wie ausgereift die diskutierten KI-Methoden sind und inwieweit datenzentrierte Ansätze in der aktuellen Forschung genutzt werden.}}, author = {{Bernijazov, Ruslan and Dicks, Alexander and Dumitrescu, Roman and Foullois, Marc and Hanselle, Jonas Manuel and Hüllermeier, Eyke and Karakaya, Gökce and Ködding, Patrick and Lohweg, Volker and Malatyali, Manuel and Meyer auf der Heide, Friedhelm and Panzner, Melina and Soltenborn, Christian}}, booktitle = {{Proceedings of the 30th International Joint Conference on Artificial Intelligence (IJCAI-21)}}, keywords = {{Artificial Intelligence Product Creation Literature Review}}, location = {{Montreal, Kanada}}, title = {{{A Meta-Review on Artificial Intelligence in Product Creation}}}, year = {{2021}}, } @article{23791, author = {{Johannesmann, Sarah and Claes, Leander and Henning, Bernd}}, journal = {{tm - Technisches Messen}}, number = {{s1}}, pages = {{s28--s33}}, publisher = {{Walter de Gruyter {GmbH}}}, title = {{{Lamb wave based approach to the determination of elastic and viscoelastic material parameters}}}, doi = {{10.1515/teme-2021-0070}}, volume = {{88}}, year = {{2021}}, } @article{23815, abstract = {{In this paper, silicon oxynitride films (SiON) grown by plasma-enhanced chemical vapor deposition are investigated. As precursor gases silane (SiH4), nitrous oxide (N2O), nitrogen (N2) and ammonia (NH3) are used with different compositions. We find that for achieving high nitrogen content adding ammonia to the precursor mix is most efficient. Moreover, we investigate the balance between adsorption and desorption processes during film growth by investigating the film growth rate as a function of the substrate temperature. From these data we are able to determine an effective activation energy for the film growth, corresponding to the difference between adsorption and desorption energy. Finally, we have thoroughly investigated the optical properties of the films using spectroscopic ellipsometry. From these measurements, we suggest a parametrized model for the refractive index and extinction coefficient in a wide range of compositions based on a Cauchy- and a Lorentz-fit.}}, author = {{Aschwanden, R. and Köthemann, R. and Albert, M. and Golla, C. and Meier, Cedrik}}, issn = {{0040-6090}}, journal = {{Thin Solid Films}}, title = {{{Optical properties of silicon oxynitride films grown by plasma-enhanced chemical vapor deposition}}}, doi = {{10.1016/j.tsf.2021.138887}}, volume = {{736}}, year = {{2021}}, } @inproceedings{23824, author = {{Sterzing, Fabian and Szabone Varnai, Agnes and Reinhold, Peter}}, booktitle = {{Naturwissenschaftlicher Unterricht und Lehrerbildung im Umbruch?}}, editor = {{Habig, Sebastian}}, pages = {{113--116}}, publisher = {{Universität Duisburg-Essen}}, title = {{{Theoriebasierte Gestaltung & Validierung der Qualität von Erklärvideos: Gesellschaft für Didaktik der Chemie und Physik, Online Jahrestagung 2020}}}, year = {{2021}}, } @article{23839, author = {{Marschik, Christian and Roland, Wolfgang and Döner, Marius and Steinbichler, Georg and Schöppner, Volker}}, journal = {{Polymers}}, publisher = {{MDPI AG }}, title = {{{A New Approach to Modeling Leakage Flow in 2 Single-Screw Extrusion}}}, year = {{2021}}, } @article{23842, author = {{Baron, Elias and Feneberg, Martin and Goldhahn, Rüdiger and Deppe, Michael and Tacken, Fabian and As, Donat Josef}}, issn = {{0022-3727}}, journal = {{Journal of Physics D: Applied Physics}}, title = {{{Optical evidence of many-body effects in the zincblende Al$_\mathrm{x}$Ga$_\mathrm{1-x}$N alloy system}}}, doi = {{10.1088/1361-6463/abb97a}}, year = {{2021}}, } @inproceedings{23851, author = {{Moritzer, Elmar and Bürenhaus, Franziska Isabelle}}, booktitle = {{SPE ANTEC 2021 Proceedings}}, title = {{{Influence of Processing Parameters on Fiber Length Degradation during Injection Molding}}}, year = {{2021}}, } @article{23977, author = {{Tölle, Lisa and Hopp , Matthias}}, journal = {{Kunststoffland NRW Report }}, title = {{{Recycling faserverstärkter Kunststoffe zu Ende gedacht… }}}, year = {{2021}}, } @article{24002, author = {{Grabo, Matti and Acar, Emre and Kenig, Eugeny Y.}}, issn = {{0960-1481}}, journal = {{Renewable Energy}}, pages = {{1087--1097}}, title = {{{Modeling and improvement of a packed bed latent heat storage filled with non-spherical encapsulated PCM-Elements}}}, doi = {{10.1016/j.renene.2021.04.022}}, year = {{2021}}, } @article{20302, author = {{Günter, Heinrich and Meschut, Gerson}}, journal = {{Welding in the World}}, title = {{{Joining of ultra-high-strength steels using resistance element welding on conventional resistance spot welding guns}}}, doi = {{https://doi.org/10.1007/s40194-021-01122-2}}, year = {{2021}}, } @inproceedings{20303, author = {{Günter, Heinrich and Meschut, Gerson and Fuss, Dennis and Werner, Kai and Bangel, Martin and Rotzsche, Dirk and Uffelmann, Marcel and Oleff, Nils}}, booktitle = {{Joining in Car Body Engineering 2021}}, location = {{Online}}, title = {{{Joining of press-hardened profiles for the mixed-intensive lightweight structural design in electric vehicles}}}, year = {{2021}}, } @inproceedings{20540, author = {{Jovanovikj, Ivan and Thottam, Anu Tony and Joseph Vincent, Vishal and Yigitbas, Enes and Sauer, Stefan and Engels, Gregor}}, booktitle = {{Proceedings of the 9th International Conference on Model-Driven Engineering and Software Development }}, location = {{Vienna}}, pages = {{232--239}}, publisher = {{SCITEPRESS}}, title = {{{A Modeling Workbench for the Development of Situation-specific Test Co-Migration Methods }}}, year = {{2021}}, } @article{20592, abstract = {{GaAs-(111)-nanostructures exhibiting second harmonic generation are new building blocks in nonlinear optics. Such structures can be fabricated through epitaxial lift-off using selective etching of Al-containing layers and subsequent transfer to glass substrates. Herein, the selective etching of (111)B-oriented AlxGa1−xAs sacrificial layers (10–50 nm thick) with different aluminum concentrations (x = 0.5–1.0) in 10\% hydrofluoric acid is investigated and compared with standard (100)-oriented structures. The thinner the sacrificial layer and the lower the aluminum content, the lower the lateral etch rate. For both orientations, the lateral etch rates are in the same order of magnitude, but some quantitative differences exist. Furthermore, the epitaxial lift-off, the transfer, and the nanopatterning of thin (111)B-oriented GaAs membranes are demonstrated. Atomic force microscopy and high-resolution X-ray diffraction measurements reveal the high structural quality of the transferred GaAs-(111) films.}}, author = {{Henksmeier, Tobias and Eppinger, Martin and Reineke, Bernhard and Zentgraf, Thomas and Meier, Cedrik and Reuter, Dirk}}, journal = {{physica status solidi (a)}}, keywords = {{epitaxial lift-off, GaAs/AlxGa1−xAs heterostructures, selective etching}}, number = {{3}}, pages = {{2000408}}, title = {{{Selective Etching of (111)B-Oriented AlxGa1−xAs-Layers for Epitaxial Lift-Off}}}, doi = {{https://doi.org/10.1002/pssa.202000408}}, volume = {{218}}, year = {{2021}}, } @inproceedings{20641, author = {{Aßmuth, Verena and Teutenberg, Dominik and Meschut, Gerson}}, booktitle = {{10. Doktorandenseminar Klebtechnik}}, isbn = {{978-3-96144-139-6}}, location = {{Kassel}}, publisher = {{DVS Media GmbH}}, title = {{{Analyse rezepturabhängiger und alterungsbedingter Enthaftungserscheinungen geklebter SMC-Bauteile}}}, volume = {{369}}, year = {{2021}}, } @article{20683, author = {{Feldkord, Björn and Knollmann, Till and Malatyali, Manuel and Meyer auf der Heide, Friedhelm}}, journal = {{Theory of Computing Systems}}, pages = {{943–984}}, title = {{{Managing Multiple Mobile Resources}}}, doi = {{10.1007/s00224-020-10023-8}}, volume = {{65}}, year = {{2021}}, } @inproceedings{20693, abstract = {{In practical, large-scale networks, services are requested by users across the globe, e.g., for video streaming. Services consist of multiple interconnected components such as microservices in a service mesh. Coordinating these services requires scaling them according to continuously changing user demand, deploying instances at the edge close to their users, and routing traffic efficiently between users and connected instances. Network and service coordination is commonly addressed through centralized approaches, where a single coordinator knows everything and coordinates the entire network globally. While such centralized approaches can reach global optima, they do not scale to large, realistic networks. In contrast, distributed approaches scale well, but sacrifice solution quality due to their limited scope of knowledge and coordination decisions. To this end, we propose a hierarchical coordination approach that combines the good solution quality of centralized approaches with the scalability of distributed approaches. In doing so, we divide the network into multiple hierarchical domains and optimize coordination in a top-down manner. We compare our hierarchical with a centralized approach in an extensive evaluation on a real-world network topology. Our results indicate that hierarchical coordination can find close-to-optimal solutions in a fraction of the runtime of centralized approaches.}}, author = {{Schneider, Stefan Balthasar and Jürgens, Mirko and Karl, Holger}}, booktitle = {{IFIP/IEEE International Symposium on Integrated Network Management (IM)}}, keywords = {{network management, service management, coordination, hierarchical, scalability, nfv}}, location = {{Bordeaux, France}}, publisher = {{IFIP/IEEE}}, title = {{{Divide and Conquer: Hierarchical Network and Service Coordination}}}, year = {{2021}}, }