@misc{37506, author = {{Weber, Jutta}}, booktitle = {{Technikanthropologie. Handbuch für Wissenschaft und Studium}}, editor = {{Heßler, Martina and Liggieri, Kevin}}, pages = {{207--214}}, publisher = {{Nomos}}, title = {{{Donna Haraway}}}, year = {{2020}}, } @misc{37508, author = {{Weber, Jutta}}, booktitle = {{Technikanthropologie. Handbuch für Wissenschaft und Studium}}, editor = {{Heßler, Martina and Liggieri, Kevin}}, pages = {{318--324}}, publisher = {{Nomos}}, title = {{{MenschMaschine}}}, year = {{2020}}, } @misc{37536, booktitle = {{Science as Culture}}, editor = {{Weber, Jutta and Kämpf, Katrin}}, number = {{1}}, title = {{{Technosecurity Cultures. Special Issue of ‚Science as Culture‘. Vol. 29(1), März 2020}}}, year = {{2020}}, } @inproceedings{13943, author = {{Krumme, Matthias and Webersen, Manuel and Claes, Leander and Webersen, Yvonne}}, booktitle = {{Fortschritte der Akustik - DAGA 2020}}, pages = {{542--545}}, title = {{{Analoge Klangsynthese zur Vermittlung von Grundkenntnissen der Signalverarbeitung an Studierende nicht-technischer Fachrichtungen}}}, year = {{2020}}, } @article{23436, abstract = {{AbstractAs time-to-market is getting shorter, customer needs have to be identified as early as possible in product development. Correctly applied, corporate foresight can give a glimpse into the future to anticipate such needs and thus gain a competitive advantage. A support tool to choose the appropriate method of foresight is not available yet. Thus, a literature study on foresight methods in industry is performed and a novel decision support tool is proposed which avoids high entrepreneurial risks. Based on the findings, potentials for future work are identified for different types of methods.}}, author = {{Gräßler, Iris and Thiele, Henrik and Scholle, P.}}, issn = {{2633-7762}}, journal = {{Proceedings of the DESIGN 2020 16th International Design Conference}}, pages = {{569--576}}, publisher = {{Cambridge University Press}}, title = {{{ASSESSING THE FUTURE: METHODS AND CRITERIA}}}, doi = {{10.1017/dsd.2020.278}}, volume = {{1}}, year = {{2020}}, } @article{23490, author = {{Thiele, Henrik and Weber, Sebastian and Reichwein, Jannik and Bartolo, Joseph A. and Tchana, Yvan and Jimenez, Lucas and Borg, Jonathan C.}}, journal = {{Proceedings of the DESIGN 2020 16th International Design Conference, 26. - 29. Okt. 2020}}, pages = {{747--756}}, publisher = {{Cambridge University Press}}, title = {{{A Scrum Agile Integrated Development Framework}}}, doi = {{https://doi.org/10.1017/dsd.2020.9}}, volume = {{1}}, year = {{2020}}, } @book{32463, author = {{Bonanati, Sabrina and Greiner, Christian and Gruchel, Nicole and Buhl, Heike M.}}, publisher = {{Springer}}, title = {{{ Lesekompetenz fördern. Ein Manual für das LIFE-Programm zur Stärkung der Zusammenarbeit von Schule und Elternhaus}}}, year = {{2020}}, } @article{23463, author = {{Gräßler, Iris and Scholle, Philipp and Thiele, Henrik}}, journal = {{Proceedings of the DESIGN 2020 16th International Design Conference; 26. - 29. Okt. 2020}}, pages = {{147--156}}, publisher = {{Cambridge University Press}}, title = {{{Improving scenario-technique by a semi-automatized consistency assessment based on pattern recognition by artificial neural networks}}}, volume = {{1}}, year = {{2020}}, } @phdthesis{42068, author = {{Gense, Alexander}}, title = {{{Mechatronischer Entwurf eines geregelten Federungssystems für mittelschwere gepanzerte Kettenfahrzeuge}}}, year = {{2020}}, } @phdthesis{42067, author = {{Bertelsmeier, Fabian}}, title = {{{Produkttolerante Automation zellenbasierter Fertigungssysteme}}}, year = {{2020}}, } @article{16927, author = {{Gharibian, Sevag and Aldi, Marco and de Beaudrap, Niel and Saeedi, Seyran}}, journal = {{Communications in Mathematical Physics}}, title = {{{On efficiently solvable cases of Quantum k-SAT}}}, year = {{2020}}, } @article{38144, author = {{Fuchs, Christian}}, journal = {{Journal for the Theory of Social Behaviour}}, number = {{3}}, pages = {{335--356}}, title = {{{Towards a Critical Theory of Communication as Renewal and Update of Marxist Humanism in the Age of Digital Capitalism}}}, doi = {{https://doi.org/10.1111/jtsb.12247}}, volume = {{50}}, year = {{2020}}, } @article{38139, author = {{Fuchs, Christian}}, journal = {{tripleC: Communication, Capitalism & Critique}}, number = {{1}}, pages = {{1--31}}, title = {{{Communicative Socialism/Digital Socialism}}}, doi = {{https://doi.org/10.31269/triplec.v18i1.1144 }}, volume = {{18}}, year = {{2020}}, } @article{38163, author = {{Fuchs, Christian}}, journal = {{tripleC: Communication, Capitalism & Critique}}, number = {{1}}, pages = {{400--428}}, title = {{{Alltagsleben und Alltagskommunikation im Coronavirus-Kapitalismus}}}, doi = {{https://doi.org/10.31269/triplec.v18i1.1168}}, volume = {{18}}, year = {{2020}}, } @article{38161, author = {{Fuchs, Christian}}, journal = {{tripleC: Communication}}, number = {{1}}, pages = {{375--399}}, title = {{{Everyday Life and Everyday Communication in Coronavirus Capitalism}}}, doi = {{https://doi.org/10.31269/triplec.v18i1.1167}}, volume = {{18}}, year = {{2020}}, } @article{38140, author = {{Fuchs, Christian}}, journal = {{tripleC: Communication, Capitalism & Critique}}, number = {{1}}, pages = {{146--186}}, title = {{{The Utopian Internet, Computing, Communication, and Concrete Utopias}}}, doi = {{https://doi.org/10.31269/triplec.v18i1.1143}}, volume = {{18}}, year = {{2020}}, } @article{38142, author = {{Fuchs, Christian}}, journal = {{Humanity & Society}}, number = {{3}}, pages = {{298--325}}, title = {{{Erich Fromm and the Critical Theory of Communication}}}, doi = {{https://doi.org/10.1177/0160597620930157}}, volume = {{44}}, year = {{2020}}, } @article{38137, author = {{Fuchs, Christian}}, journal = {{Journal of Media Ethics}}, number = {{2}}, pages = {{112--126}}, title = {{{The Ethics of the Digital Commons}}}, doi = {{https://doi.org/10.1080/23736992.2020.1736077}}, volume = {{35}}, year = {{2020}}, } @article{42486, author = {{Fuchs, Christian}}, journal = {{MATRIZes}}, number = {{2}}, pages = {{41--73}}, title = {{{Vida e comunicação cotidianas no capitalism da coronavirus}}}, volume = {{14}}, year = {{2020}}, } @article{25901, abstract = {{Thermally stabilized and subsequently carbonized nanofibers are a promising material for many technical applications in fields such as tissue engineering or energy storage. They can be obtained from a variety of different polymer precursors via electrospinning. While some methods have been tested for post-carbonization doping of nanofibers with the desired ingredients, very little is known about carbonization of blend nanofibers from two or more polymeric precursors. In this paper, we report on the preparation, thermal treatment and resulting properties of poly(acrylonitrile) (PAN)/poly(vinylidene fluoride) (PVDF) blend nanofibers produced by wire-based electrospinning of binary polymer solutions. Using a wide variety of spectroscopic, microscopic and thermal characterization methods, the chemical and morphological transition during oxidative stabilization (280 °C) and incipient carbonization (500 °C) was thoroughly investigated. Both PAN and PVDF precursor polymers were detected and analyzed qualitatively and quantitatively during all stages of thermal treatment. Compared to pure PAN nanofibers, the blend nanofibers showed increased fiber diameters, strong reduction of undesired morphological changes during oxidative stabilization and increased conductivity after carbonization.}}, author = {{Wortmann, Martin and Frese, Natalie and Mamun, Al and Trabelsi, Marah and Keil, Waldemar and Büker, Björn and Javed, Ali and Tiemann, Michael and Moritzer, Elmar and Ehrmann, Andrea and Hütten, Andreas and Schmidt, Claudia and Gölzhäuser, Armin and Hüsgen, Bruno and Sabantina, Lilia}}, issn = {{2079-4991}}, journal = {{Nanomaterials}}, title = {{{Chemical and Morphological Transition of Poly(acrylonitrile)/Poly(vinylidene Fluoride) Blend Nanofibers during Oxidative Stabilization and Incipient Carbonization}}}, doi = {{10.3390/nano10061210}}, year = {{2020}}, } @article{25899, abstract = {{Large Co-MOF-74 crystals of a few hundred micrometers were prepared by solvothermal synthesis, and their structure and morphology were characterized by scanning electron microscopy (SEM), IR, and Raman spectroscopy. The hydrothermal stability of the material up to 60 °C at 93% relative humidity was verified by temperature-dependent XRD. Proton conductivity was studied by impedance spectroscopy, using a single crystal. By varying the relative humidity (70–95%), temperature (21–60 °C), and orientation of the crystal relative to the electrical potential, it was found that proton conduction occurs predominantly through the linear, unidirectional (1D) micropore channels of Co-MOF-74, and that water molecules inside the channels are responsible for the proton mobility by a Grotthuss-type mechanism.}}, author = {{Javed, Ali and Strauss, Ina and Bunzen, Hana and Caro, Jürgen and Tiemann, Michael}}, issn = {{2079-4991}}, journal = {{Nanomaterials}}, title = {{{Humidity-Mediated Anisotropic Proton Conductivity through the 1D Channels of Co-MOF-74}}}, doi = {{10.3390/nano10071263}}, year = {{2020}}, } @inproceedings{19502, author = {{Hetkämper, Tim and Krumme, Matthias and Dreiling, Dmitrij and Claes, Leander}}, booktitle = {{SEFI 48th Annual Conference Proceedings - Engaging Engineering Education}}, location = {{Enschede}}, pages = {{1309--1313}}, publisher = {{SEFI}}, title = {{{A modular, scalable open-hardware platform for project-based laboratory courses in electrical engineering studies}}}, year = {{2020}}, } @techreport{35179, abstract = {{Die Autor*innen werfen einen medienwissenschaftlichen Blick auf die Online-Lehre des Sommersemsters 2020. Dabei betrachten sie unter anderem den Unterschied von klassischen Hörsälen zu den neuen, virtuellen Lernräumen, die aber auch physische Elemente beinhalten. Dabei regen sie an, den Einsatz von Lehr-Lern-Plattformen kritisch zu diskutieren und insgesamt die Lehre mit andauernder Medienreflexion zu begleiten. Ein zentraler Punkt des Papiers ist das Aufzeigen von Inklusions- und Exklusionspotenzialen von Online-Lehre. Vermeintliche Selbstverständnisse spielen hier eine Schlüsselrolle. So wird zum Beispiel häufig eine gewisse technische Infrastruktur seitens der Studierenden vorausgesetzt, die nicht immer vorhanden ist. Andererseits entfallen physische Barrieren, die in Lehrgebäuden vorhanden wären. Die Autor*innen mahnen, bei der Konzeption von Online-Lehre zu vermeiden, nicht-behinderte Personen als die Norm anzunehmen und stattdessen von verschiedenen Körperlichkeiten her zu denken, um die positive Potenziale dieses Lehrmodus zu nutzen. Das Diskussionspapier widmet sich auch ausführlich dem Einsatz von (digitalen) Tools, die weniger als Werkzeuge, denn als Medien der Lehre verstanden werden.}}, author = {{Bohnenkamp, Björn and Burkhardt, Marcus and Grashöfer, Katja and Hlukhovych, Adrianna and Krewani, Angela and Matzner, Tobias and Missomelius, Petra and Raczkowski, Felix and Shnayien, Mary and Weich, Andreas and Wippich, Uwe}}, title = {{{Online-Lehre 2020 – Eine medienwissenschaftliche Perspektive. Diskussionspapier Nr. 10}}}, doi = {{10.25969/mediarep/14846}}, year = {{2020}}, } @article{35180, abstract = {{Die vorübergehende Umstellung der Lehre von Präsenz- auf alternative Formate (sowohl online als auch offline) ist nicht nur eine logistische Herausforderung, sondern hat auch eine medientheoretische und eine wissenschaftspolitische Dimension. Gerade als Medienwissenschaftler_innen sollten wir in dieser Hinsicht reflektiert vorgehen, denn wir haben es mit einer Frage der Übersetzbarkeit von Inhalten zwischen unterschiedlichen Medien zu tun. Der Versuch, Lehrinhalte vom Medium des Sprechens und Diskutierens vor Ort in das Medium etwa einer Konferenzschaltung oder einer kollaborativen schriftlichen Textkommentierung zu übersetzen, verändert diese Inhalte. Wenn wir neue Formate für die Lehre unter besonderen Bedingungen ausprobieren, sollten wir uns die medienwissenschaftliche Prämisse, dass das Medium die Botschaft ist, ständig vor Augen halten. Deshalb schlagen wir vor, diese Aufgabe als ein medienwissenschaftliches Experiment zu betrachten und dieses Experiment im kommenden Semester nicht nur zum Medium, sondern auch zum Inhalt unserer Seminare zu machen.}}, author = {{Heinke, Christian and Shnayien, Mary and Sprenger, Florian and Wippich, Uwe}}, journal = {{-}}, title = {{{Lehre unter besonderen Bedingungen. Leitfaden zur temporären Umstellung der Lehre auf Online-Formate}}}, year = {{2020}}, } @book{35177, abstract = {{Digital media are transformative: they (re)shape the ways of communicating, relating, doing, knowing, and living as much as they are themselves subject to continuous transformation. The contributions in this volume explore these contemporary shifts in and of digital cultures by analyzing a wide range of topics: from data, infrastructures, algorithms, logistics, economies, politics, identities, collectives […] It’s Open Access! Check it out!}}, editor = {{Burkhardt, Marcus and Grashöfer, Katja and Shnayien, Mary}}, publisher = {{meson press}}, title = {{{Explorations in Digital Cultures}}}, doi = {{https://explorations.meson.press/}}, year = {{2020}}, } @article{37014, abstract = {{Jugend wird als eine eigenständige Lebens- und Entwicklungsphase betrachtet. Für junge Geflüchtete stellt sie eine besondere Herausforderung dar. Für sie geht es nicht nur um die Bewältigung alterstypischer Entwicklungsaufgaben, sondern auch um eine gelingende Integration in die Aufnahmegesellschaft. Dazu gehören u. a. das Kennenlernen und die Aneignung von Sprache, Kultur und Werten, genauso die Erschließung von Alltagsräumen und Lebenswelten, z. B. von Freizeitmöglichkeiten, Bildung und von beruflichen Erfahrungsräumen. Die Frage zur gelingenden Integration und Gestaltung von Lebenswelten junger Geflüchteter wurde im Kontext der wissenschaftlichen Begleitung des Projekts „angekommen in Deiner Stadt“ der Walter Blüchert Stiftung genauer untersucht. Der Beitrag referiert u. a. die Ergebnisse einer in diesem Kontext durchgeführten egozentrierten Netzwerkanalyse. Die Ergebnisse zeigen, dass die Angebote den Rahmen für den Aufbau und die Erweiterung kommunikativer, sozialer Netzwerke darstellen und lebensweltliche Zugänge öffnen.}}, author = {{Heisler, Dietmar and Schemmer, Susanne}}, journal = {{BWP@ Berufs- und Wirtschaftspädagogik - online}}, keywords = {{Jugend, Lebensweltorientierung, soziale Netzwerke, geflüchtete Jugendliche, Lebenslagen junger Geflüchteter und Zugewanderter}}, pages = {{1--23}}, title = {{{Lebenswelten und soziale Netzwerke von jungen Geflüchteten und Zugewanderten am Übergang in Ausbildung und Beruf.}}}, year = {{2020}}, } @book{36992, editor = {{Heisler, Dietmar}}, pages = {{237}}, publisher = {{wbv}}, title = {{{Digitalisierung am Übergang Schule Beruf. Ansätze und Perspektiven in Arbeitsdomänen und beruflicher Förderung}}}, doi = {{ 10.3278/6004725w}}, volume = {{56}}, year = {{2020}}, } @article{19190, abstract = {{Polarons in dielectric crystals play a crucial role for applications in integrated electronics and optoelectronics. In this work, we use density-functional theory and Green's function methods to explore the microscopic structure and spectroscopic signatures of electron polarons in lithium niobate (LiNbO3). Total-energy calculations and the comparison of calculated electron paramagnetic resonance data with available measurements reveal the formation of bound polarons at Nb_Li antisite defects with a quasi-Jahn-Teller distorted, tilted configuration. The defect-formation energies further indicate that (bi)polarons may form not only at Nb_Li antisites but also at structures where the antisite Nb atom moves into a neighboring empty oxygen octahedron. Based on these structure models, and on the calculated charge-transition levels and potential-energy barriers, we propose two mechanisms for the optical and thermal splitting of bipolarons, which provide a natural explanation for the reported two-path recombination of bipolarons. Optical-response calculations based on the Bethe-Salpeter equation, in combination with available experimental data and new measurements of the optical absorption spectrum, further corroborate the geometries proposed here for free and defect-bound (bi)polarons.}}, author = {{Schmidt, Falko and Kozub, Agnieszka L. and Biktagirov, Timur and Eigner, Christof and Silberhorn, Christine and Schindlmayr, Arno and Schmidt, Wolf Gero and Gerstmann, Uwe}}, issn = {{2643-1564}}, journal = {{Physical Review Research}}, number = {{4}}, publisher = {{American Physical Society}}, title = {{{Free and defect-bound (bi)polarons in LiNbO3: Atomic structure and spectroscopic signatures from ab initio calculations}}}, doi = {{10.1103/PhysRevResearch.2.043002}}, volume = {{2}}, year = {{2020}}, } @article{41432, author = {{Fuchs, Christian}}, journal = {{tripleC: Communication, Capitalism & Critique}}, number = {{1}}, pages = {{1--285}}, title = {{{Communicative Socialism/Digital Socialism}}}, doi = {{https://doi.org/10.31269/triplec.v18i1.1149}}, volume = {{18}}, year = {{2020}}, } @article{42485, author = {{Fuchs, Christian}}, journal = {{tripleC: Communication, Capitalism & Critique}}, number = {{2}}, pages = {{508--509}}, title = {{{Preface to Manfred Knoche’s Article “Science Communication and Open Access: The Critique of the Political Economy of Capitalist Academic Publishers as Ideology Critique”}}}, doi = {{https://doi.org/10.31269/triplec.v18i2.1183}}, volume = {{18}}, year = {{2020}}, } @article{23854, abstract = {{Micropatterned nanoporous aluminum oxide arrays are prepared on silicon wafer substrates by using photopolymerized poly(dimethylacrylamide) hydrogels as porogenic matrices. Hydrogel micropatterns are fabricated by spreading the prepolymer mixture on the substrate, followed by UV photopolymerization through a micropatterned mask. The hydrogel is covalently bonded to the substrate surface. Al2O3 is produced by swelling the hydrogel in a saturated aluminum nitrate solution and subsequent thermal conversion/calcination. As a result, micropatterned porous Al2O3 microdots with heights in µm range and large specific surface areas up to 274 m2 g−1 are obtained. Hence, the hydrogel fulfills a dual templating function, namely micropatterning and nanoporosity generation. The impact of varying the photopolymerization time on the properties of the products is studied. Samples are characterized by light and confocal laser scanning microscopy, scanning electron microscopy, energy-dispersive x-ray spectrometry, and Kr physisorption analysis.}}, author = {{Chen, Zimei and Kuckling, Dirk and Tiemann, Michael}}, issn = {{0957-4484}}, journal = {{Nanotechnology}}, publisher = {{IOP Publishing}}, title = {{{Nanoporous aluminum oxide micropatterns prepared by hydrogel templating}}}, doi = {{10.1088/1361-6528/aba710}}, volume = {{31}}, year = {{2020}}, } @article{25898, abstract = {{Metal oxide inverse opals are interesting for various applications. To achieve highly ordered inverse opal structures, one important issue during the colloidal crystal templating procedure is to form a stable precursor network before the template loses its structural integrity at high temperature. Using poly(methyl methacrylate), PMMA, colloidal crystal templates, it is essential to consider the physical and chemical changes of the precursors induced by the changes of PMMA during the thermal conversion. For a systematic investigation of this matter, we synthesized a variety of metal oxide inverse opals from the respective metal nitrates, including Cr2O3, Ga2O3, Fe2O3, In2O3, CuO, CeO2, and ZnO, to compare the effect of various modifications of precursors on the structural and optical properties. When the nitrate precursors have a lower thermal stability than the PMMA template, we have modified the metal nitrates by chelating or by polyacrylamide gelation to form more stable precursor networks.}}, author = {{Zhang, Xuyang and Weinberger, Christian and Amrehn, Sabrina and Wu, Xia and Tiemann, Michael and Wagner, Thorsten}}, issn = {{1434-1948}}, journal = {{European Journal of Inorganic Chemistry}}, pages = {{3402--3407}}, title = {{{Synthesis of Metal Oxide Inverse Opals from Metal Nitrates by PMMA Colloidal Crystal Templating}}}, doi = {{10.1002/ejic.202000517}}, year = {{2020}}, } @article{25900, abstract = {{The proton conduction properties of a phosphonato-sulfonate-based coordination polymer are studied by impedance spectroscopy using a single crystal specimen. Two distinct conduction mechanisms are identified. Water-mediated conductance along the crystal surface occurs by mass transport, as evidenced by a high activation energy (0.54 eV). In addition, intrinsic conduction by proton ′hopping′ through the interior of the crystal with a low activation energy (0.31 eV) is observed. This latter conduction is anisotropic with respect to the crystal structure and seems to occur through a channel along the c axis of the orthorhombic crystal. Proton conduction is assumed to be mediated by sulfonate groups and non-coordinating water molecules that are part of the crystal structure.}}, author = {{Javed, Ali and Wagner, Thorsten and Wöhlbrandt, Stephan and Stock, Norbert and Tiemann, Michael}}, issn = {{1439-4235}}, journal = {{ChemPhysChem}}, pages = {{605--609}}, title = {{{Proton Conduction in a Single Crystal of a Phosphonato‐Sulfonate‐Based Coordination Polymer: Mechanistic Insight}}}, doi = {{10.1002/cphc.202000102}}, year = {{2020}}, } @article{25902, abstract = {{This Special Issue on “Functional Nanoporous Materials” in the MDPI journal nanomaterials features seven original papers ...}}, author = {{Weinberger, Christian and Tiemann, Michael}}, issn = {{2079-4991}}, journal = {{Nanomaterials}}, title = {{{Functional Nanoporous Materials}}}, doi = {{10.3390/nano10040699}}, year = {{2020}}, } @article{19189, abstract = {{Density-functional theory calculations of (TiO2)n clusters (n = 1–5) in the gas phase and adsorbed on pristine graphene as well as graphene quantum dots are presented. The cluster adsorption is found to be dominated by van der Waals forces. The electronic structure and in particular the excitation energies of the bare clusters and the TiO2/graphene composites are found to vary largely in dependence on the size of the respective constituents. This holds in particular for the energy and the spatial localization of the highest occupied and lowest unoccupied molecular orbitals. In addition to a substantial gap narrowing, a pronounced separation of photoexcited electrons and holes is predicted in some instances. This is expected to prolong the lifetime of photoexcited carriers. Altogether, TiO2/graphene composites are predicted to be promising photocatalysts with improved electronic and photocatalytic properties compared to bulk TiO2.}}, author = {{Badalov, Sabuhi and Wilhelm, René and Schmidt, Wolf Gero}}, issn = {{0192-8651}}, journal = {{Journal of Computational Chemistry}}, pages = {{1921--1930}}, publisher = {{Willey}}, title = {{{Photocatalytic properties of graphene‐supported titania clusters from density‐functional theory}}}, doi = {{10.1002/jcc.26363}}, year = {{2020}}, } @article{43747, abstract = {{Vortices are topological objects representing the circular motion of a fluid. With their additional degree of freedom, the vorticity, they have been widely investigated in many physical systems and different materials for fundamental interest and for applications in data storage and information processing. Vortices have also been observed in non-equilibrium exciton-polariton condensates in planar semiconductor microcavities. There they appear spontaneously or can be created and pinned in space using ring-shaped optical excitation profiles. However, using the vortex state for information processing not only requires creation of a vortex but also efficient control over the vortex after its creation. Here we demonstrate a simple approach to control and switch a localized polariton vortex between opposite states. In our scheme, both the optical control of vorticity and its detection through the orbital angular momentum of the emitted light are implemented in a robust and practical manner.}}, author = {{Meier, Torsten and Ma, Xuekai and Berger, Bernd and Aßmann, Marc and Driben, Rodislav and Schneider, Christian and Höfling, Sven and Schumacher, Stefan}}, journal = {{Nature communications}}, number = {{1}}, pages = {{897}}, publisher = {{Nature Publishing Group UK}}, title = {{{Realization of all-optical vortex switching in exciton-polariton condensates}}}, doi = {{10.1038/s41467-020-14702-5}}, volume = {{11}}, year = {{2020}}, } @article{16859, author = {{Martin, Sven and Camberg, Alan A. and Tröster, Thomas}}, issn = {{2351-9789}}, journal = {{Procedia Manufacturing}}, location = {{virtually}}, pages = {{419--424}}, publisher = {{Elsevier}}, title = {{{Probability Distribution of Joint Point Loadings in Car Body Structures under Global Bending and Torsion}}}, doi = {{10.1016/j.promfg.2020.04.324}}, year = {{2020}}, } @article{23797, abstract = {{Abstract Safety-relevant components in automobiles require materials that combine high strength with sufficient residual ductility and high-energy absorption. A graded thermo-mechanical treatment of the press-hardening steel 22MnB5 with graded microstructure can provide a material with such properties. Different austenitization temperatures, cooling and forming conditions within a sheet part lead to the development of microstructures with mixed phase compositions. To determine the resulting phase contents in such graded processed parts, a large number of dilatometric tests are usually required. With a non-contact characterization method, it is possible to detect local phase transformations on an inhomogeneously treated flat steel specimen. For press-hardening steel after heat treatment and thermo-mechanical processing, correlations between austenitization temperature, hot deformation strain, microstructure, and hardness are established.}}, author = {{Reitz, Alexander and Grydin, Olexandr and Schaper, Mirko}}, issn = {{1073-5623}}, journal = {{Metallurgical and Materials Transactions A}}, pages = {{5628--5638}}, publisher = {{Springer}}, title = {{{Characterization of Phase Transformations During Graded Thermo-Mechanical Processing of Press-Hardening Sheet Steel 22MnB5}}}, doi = {{10.1007/s11661-020-05976-x}}, year = {{2020}}, } @article{24573, abstract = {{Al-Li based alloys are attractive materials for the aerospace industry. The twin-roll casting of such materials could provide properties not achievable by conventional direct-chill casting and downstream processing methods due to significantly higher solidification rates. An Al-Li-Cu-Mg-Zr alloy was twin-roll cast with the same alloy containing a small addition of Sc. The microstructure of as-cast materials and the influence of Sc on the behavior of the alloy at elevated temperatures were studied by means of light and electron microscopy and by resistivity measurements. A fine-grained structure was formed during twin-roll casting, but several surface and internal defects were found on the strips, which should be suppressed by a further adjustment of the casting conditions. The addition of Sc had a positive effect on grain size uniformity and microstructure stabilization at elevated temperatures, as shown by the precipitation of a fine dispersion of coherent Sc- and Zr-containing precipitates.}}, author = {{Grydin, Olexandr and Stolbchenko, Mykhailo and Schaper, Mirko and Belejová, Sára and Králík, Rostislav and Bajtošová, Lucia and Křivská, Barbora and Hájek, Michal and Cieslar, Miroslav}}, issn = {{2075-4701}}, journal = {{Metals}}, number = {{8}}, title = {{{New Twin-Roll Cast Al-Li Based Alloys for High-Strength Applications}}}, doi = {{10.3390/met10080987}}, volume = {{10}}, year = {{2020}}, } @article{15489, author = {{Claes, Leander and Steidl, Carolin and Hetkämper, Tim and Henning, Bernd}}, journal = {{arXiv.org}}, publisher = {{Cornell University}}, title = {{{Estimation of acoustic wave non-linearity in ultrasonic measurement systems}}}, doi = {{10.48550/arXiv.2001.05708}}, year = {{2020}}, } @book{45662, author = {{Lutz, Katharina and Offergeld, Jana and Freymuth, Nina and Arp, Anna Liza}}, title = {{{Gemeinsam Forschung gestalten. Handreichung zu partizipativer Forschung}}}, year = {{2020}}, } @inproceedings{36546, author = {{Meyer, Lena and Tabeling, Laura and Gasteiger, Hedwig and Bruns, Julia}}, booktitle = {{Beiträge zum Mathematikunterricht 2020}}, editor = {{Siller, Hans-Stefan and Weigel, Wolfgang and Wörler, Jan}}, location = {{Würzburg}}, pages = {{1253--1256}}, publisher = {{WTM-Verlag}}, title = {{{Interaktionen in mathematischen Spielsituationen in Kindertagesstätte und Familie}}}, year = {{2020}}, } @inproceedings{36539, author = {{Bruns, Julia}}, booktitle = {{Beiträge zum Mathematikunterricht 2020}}, editor = {{Siller, Hans-Stefan and Weigel, Wolfgang and Wörler, Jan}}, location = {{Würzburg}}, pages = {{1245--1248}}, publisher = {{WTM-Verlag}}, title = {{{Mathematisches Fachwissen von frühpädagogischen Fachpersonen im Spannungsfeld zwischen Disziplin- und Praxis}}}, doi = {{10.37626/GA9783959871402.0}}, year = {{2020}}, } @article{45317, author = {{Schemmer, Susanne Jutta and Heisler, Dietmar}}, journal = {{bwp@Berufs-und Wirtschaftspädagogik – online, (24.06.2020)}}, number = {{1-23}}, title = {{{Lebenswelten und soziale Netzwerke von jungen Geflüchteten und Zugewanderten am Übergang in Ausbildung und Beruf}}}, volume = {{38}}, year = {{2020}}, } @article{45785, abstract = {{In this paper, we implement the multidomain compact finite difference method to numerically study high dimensional chaos by considering the nine-dimensional Lorenz system. Most of the existing numerical methods converge slowly for this kind of problems and this results in inaccurate approximations. Though highly accurate, the compact finite difference method becomes less accurate for problems characterized by chaotic solutions, even with an increase in the number of grid points. As a result, in this work, we adopt the multidomain approach. This approach remarkably improves the results as well as the efficiency of the method.}}, author = {{Kouagou, N.J. and Dlamini, P.G. and Simelane, S.M.}}, issn = {{1110-0168}}, journal = {{Alexandria Engineering Journal}}, keywords = {{Multidomain, Compact finite difference, 9D Lorenz system}}, number = {{4}}, pages = {{2617--2625}}, title = {{{On the multi-domain compact finite difference relaxation method for high dimensional chaos: The nine-dimensional Lorenz system}}}, doi = {{https://doi.org/10.1016/j.aej.2020.04.025}}, volume = {{59}}, year = {{2020}}, } @phdthesis{46152, abstract = {{Die Dissertation beschäftigt sich mit dem Gebrauch von Präpositionen (z. B. an, für) und Präpositionalphrasen (z. B. an der Wand, für dich) durch Lernende des Deutschen als Fremdsprache (DaF). Es wird untersucht, welche ausgewählten Variablen den Gebrauch dieser Strukturen beeinflussen. Der Schwerpunkt liegt dabei auf Gebrauchsschwierigkeiten. Auf Basis lernersprachlicher Daten im digitalen, frei verfügbaren Lernerkorpus MERLIN (merlin-platform.eu) und unter Berücksichtigung grundlegender Annahmen aktueller Spracherwerbstheorien werden quantitativ ausgerichtete Fallstudien zu folgenden Einflussvariablen durchgeführt: Die Erstsprache der Lernenden, die Sprachkompetenz, die syntaktische Funktion der PP und der semantische Gehalt der Präposition. Die Arbeit bettet sich ein in die Lernerkorpusforschung an der Schnittstelle zur Zweit- und Fremdspracherwerbsforschung. Die Ergebnisse zeigen insgesamt für alle Einflussvariablen einen Effekt und bestätigen damit den Einfluss intralingualer sowie interlingualer Merkmale im Sprachgebrauch von Lernenden. Dabei wird deutlich, dass die Gebrauchsschwierigkeiten nicht quantitativer (Korrektheit), sondern eher qualitativer Natur (Fehlertypen) sind. Die Dissertation liefert empirisch fundierte Erkenntnisse zu Schwierigkeiten im Gebrauch von Präpositionen und PP durch DaF-Lernende, für die bisher systematische, korpusgestützte Untersuchungen fehlten. Die Arbeit zeigt dabei exemplarisch auf, wie Annahmen aus der Spracherwerbsforschung anhand von Lernerkorpusdaten überprüft und mögliche Einflussvariablen im Sprachgebrauch ermittelt werden können. Die Erkenntnisse sind auch für andere Forschungsfelder (u.a. Fremdsprachenunterricht und maschinelle Sprachverarbeitung) relevant. }}, author = {{Weber, Tassja}}, keywords = {{Deutsch als Fremdsprache, Korpuslinguistik, Lernerkorpora, Präpositionen, Präpositionalphrasen, Grammatik, Regressionsanalyse}}, publisher = {{Universität Mannheim}}, title = {{{Präpositionen und Deutsch als Fremdsprache: Quantitative Fallstudien im Lernerkorpus MERLIN}}}, year = {{2020}}, } @article{16277, abstract = {{CP2K is an open source electronic structure and molecular dynamics software package to perform atomistic simulations of solid-state, liquid, molecular, and biological systems. It is especially aimed at massively parallel and linear-scaling electronic structure methods and state-of-theart ab initio molecular dynamics simulations. Excellent performance for electronic structure calculations is achieved using novel algorithms implemented for modern high-performance computing systems. This review revisits the main capabilities of CP2K to perform efficient and accurate electronic structure simulations. The emphasis is put on density functional theory and multiple post–Hartree–Fock methods using the Gaussian and plane wave approach and its augmented all-electron extension.}}, author = {{Kühne, Thomas and Iannuzzi, Marcella and Ben, Mauro Del and Rybkin, Vladimir V. and Seewald, Patrick and Stein, Frederick and Laino, Teodoro and Khaliullin, Rustam Z. and Schütt, Ole and Schiffmann, Florian and Golze, Dorothea and Wilhelm, Jan and Chulkov, Sergey and Mohammad Hossein Bani-Hashemian, Mohammad Hossein Bani-Hashemian and Weber, Valéry and Borstnik, Urban and Taillefumier, Mathieu and Jakobovits, Alice Shoshana and Lazzaro, Alfio and Pabst, Hans and Müller, Tiziano and Schade, Robert and Guidon, Manuel and Andermatt, Samuel and Holmberg, Nico and Schenter, Gregory K. and Hehn, Anna and Bussy, Augustin and Belleflamme, Fabian and Tabacchi, Gloria and Glöß, Andreas and Lass, Michael and Bethune, Iain and Mundy, Christopher J. and Plessl, Christian and Watkins, Matt and VandeVondele, Joost and Krack, Matthias and Hutter, Jürg}}, journal = {{The Journal of Chemical Physics}}, number = {{19}}, title = {{{CP2K: An electronic structure and molecular dynamics software package - Quickstep: Efficient and accurate electronic structure calculations}}}, doi = {{10.1063/5.0007045}}, volume = {{152}}, year = {{2020}}, } @article{12878, abstract = {{In scientific computing, the acceleration of atomistic computer simulations by means of custom hardware is finding ever-growing application. A major limitation, however, is that the high efficiency in terms of performance and low power consumption entails the massive usage of low precision computing units. Here, based on the approximate computing paradigm, we present an algorithmic method to compensate for numerical inaccuracies due to low accuracy arithmetic operations rigorously, yet still obtaining exact expectation values using a properly modified Langevin-type equation.}}, author = {{Rengaraj, Varadarajan and Lass, Michael and Plessl, Christian and Kühne, Thomas}}, journal = {{Computation}}, number = {{2}}, publisher = {{MDPI}}, title = {{{Accurate Sampling with Noisy Forces from Approximate Computing}}}, doi = {{10.3390/computation8020039}}, volume = {{8}}, year = {{2020}}, } @inproceedings{13226, abstract = {{The canonical problem for the class Quantum Merlin-Arthur (QMA) is that of estimating ground state energies of local Hamiltonians. Perhaps surprisingly, [Ambainis, CCC 2014] showed that the related, but arguably more natural, problem of simulating local measurements on ground states of local Hamiltonians (APX-SIM) is likely harder than QMA. Indeed, [Ambainis, CCC 2014] showed that APX-SIM is P^QMA[log]-complete, for P^QMA[log] the class of languages decidable by a P machine making a logarithmic number of adaptive queries to a QMA oracle. In this work, we show that APX-SIM is P^QMA[log]-complete even when restricted to more physical Hamiltonians, obtaining as intermediate steps a variety of related complexity-theoretic results. We first give a sequence of results which together yield P^QMA[log]-hardness for APX-SIM on well-motivated Hamiltonians: (1) We show that for NP, StoqMA, and QMA oracles, a logarithmic number of adaptive queries is equivalent to polynomially many parallel queries. These equalities simplify the proofs of our subsequent results. (2) Next, we show that the hardness of APX-SIM is preserved under Hamiltonian simulations (a la [Cubitt, Montanaro, Piddock, 2017]). As a byproduct, we obtain a full complexity classification of APX-SIM, showing it is complete for P, P^||NP, P^||StoqMA, or P^||QMA depending on the Hamiltonians employed. (3) Leveraging the above, we show that APX-SIM is P^QMA[log]-complete for any family of Hamiltonians which can efficiently simulate spatially sparse Hamiltonians, including physically motivated models such as the 2D Heisenberg model. Our second focus considers 1D systems: We show that APX-SIM remains P^QMA[log]-complete even for local Hamiltonians on a 1D line of 8-dimensional qudits. This uses a number of ideas from above, along with replacing the "query Hamiltonian" of [Ambainis, CCC 2014] with a new "sifter" construction.}}, author = {{Gharibian, Sevag and Piddock, Stephen and Yirka, Justin}}, booktitle = {{Proceedings of the 37th Symposium on Theoretical Aspects of Computer Science (STACS 2020)}}, pages = {{38}}, title = {{{Oracle complexity classes and local measurements on physical Hamiltonians}}}, year = {{2020}}, } @article{33299, abstract = {{The aim of this study was to find out whether teaching how to search for literature would be more beneficial to students and teachers if done online through short videos rather than in person during course time. To find out whether online videos are more beneficial, two courses were asked to fill in questionnaires, one at the beginning and one at the end of the semester. One of the courses received the input online via videos and were given an exercise to put the newly learned skills to use, the other course served as a control group and learned how to search for literature during the course. The results show that while the difference between the two groups is not significant, the videos can still be regarded as being more beneficial than teaching the necessary skills during course time.}}, author = {{Hahn, Charlotte Anna}}, issn = {{ISSN 2199-8825}}, journal = {{die hochschullehre}}, keywords = {{E-Learning, information competence, literature, library, research}}, number = {{6}}, title = {{{Informationskompetenz durch E-Learning? Durch Lernvideos nach Literatur suchen}}}, year = {{2020}}, } @inproceedings{20762, abstract = {{The rising interest in single-channel multi-speaker speech separation sparked development of End-to-End (E2E) approaches to multispeaker speech recognition. However, up until now, state-of-theart neural network–based time domain source separation has not yet been combined with E2E speech recognition. We here demonstrate how to combine a separation module based on a Convolutional Time domain Audio Separation Network (Conv-TasNet) with an E2E speech recognizer and how to train such a model jointly by distributing it over multiple GPUs or by approximating truncated back-propagation for the convolutional front-end. To put this work into perspective and illustrate the complexity of the design space, we provide a compact overview of single-channel multi-speaker recognition systems. Our experiments show a word error rate of 11.0% on WSJ0-2mix and indicate that our joint time domain model can yield substantial improvements over cascade DNN-HMM and monolithic E2E frequency domain systems proposed so far.}}, author = {{von Neumann, Thilo and Kinoshita, Keisuke and Drude, Lukas and Boeddeker, Christoph and Delcroix, Marc and Nakatani, Tomohiro and Haeb-Umbach, Reinhold}}, booktitle = {{ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)}}, pages = {{7004--7008}}, title = {{{End-to-End Training of Time Domain Audio Separation and Recognition}}}, doi = {{10.1109/ICASSP40776.2020.9053461}}, year = {{2020}}, } @inproceedings{20764, abstract = {{Most approaches to multi-talker overlapped speech separation and recognition assume that the number of simultaneously active speakers is given, but in realistic situations, it is typically unknown. To cope with this, we extend an iterative speech extraction system with mechanisms to count the number of sources and combine it with a single-talker speech recognizer to form the first end-to-end multi-talker automatic speech recognition system for an unknown number of active speakers. Our experiments show very promising performance in counting accuracy, source separation and speech recognition on simulated clean mixtures from WSJ0-2mix and WSJ0-3mix. Among others, we set a new state-of-the-art word error rate on the WSJ0-2mix database. Furthermore, our system generalizes well to a larger number of speakers than it ever saw during training, as shown in experiments with the WSJ0-4mix database. }}, author = {{von Neumann, Thilo and Boeddeker, Christoph and Drude, Lukas and Kinoshita, Keisuke and Delcroix, Marc and Nakatani, Tomohiro and Haeb-Umbach, Reinhold}}, booktitle = {{Proc. Interspeech 2020}}, pages = {{3097--3101}}, title = {{{Multi-Talker ASR for an Unknown Number of Sources: Joint Training of Source Counting, Separation and ASR}}}, doi = {{10.21437/Interspeech.2020-2519}}, year = {{2020}}, } @misc{48911, author = {{Hartung, Olaf}}, booktitle = {{Neue Westfälische}}, title = {{{Gedenken an Luftangriffe auf Paderborn: "Erinnerung wird nie obsolet sein" }}}, year = {{2020}}, } @inproceedings{18651, abstract = {{We present an approach to deep neural network based (DNN-based) distance estimation in reverberant rooms for supporting geometry calibration tasks in wireless acoustic sensor networks. Signal diffuseness information from acoustic signals is aggregated via the coherent-to-diffuse power ratio to obtain a distance-related feature, which is mapped to a source-to-microphone distance estimate by means of a DNN. This information is then combined with direction-of-arrival estimates from compact microphone arrays to infer the geometry of the sensor network. Unlike many other approaches to geometry calibration, the proposed scheme does only require that the sampling clocks of the sensor nodes are roughly synchronized. In simulations we show that the proposed DNN-based distance estimator generalizes to unseen acoustic environments and that precise estimates of the sensor node positions are obtained. }}, author = {{Gburrek, Tobias and Schmalenstroeer, Joerg and Brendel, Andreas and Kellermann, Walter and Haeb-Umbach, Reinhold}}, booktitle = {{European Signal Processing Conference (EUSIPCO)}}, title = {{{Deep Neural Network based Distance Estimation for Geometry Calibration in Acoustic Sensor Network}}}, year = {{2020}}, } @inproceedings{20766, abstract = {{Recently, the source separation performance was greatly improved by time-domain audio source separation based on dual-path recurrent neural network (DPRNN). DPRNN is a simple but effective model for a long sequential data. While DPRNN is quite efficient in modeling a sequential data of the length of an utterance, i.e., about 5 to 10 second data, it is harder to apply it to longer sequences such as whole conversations consisting of multiple utterances. It is simply because, in such a case, the number of time steps consumed by its internal module called inter-chunk RNN becomes extremely large. To mitigate this problem, this paper proposes a multi-path RNN (MPRNN), a generalized version of DPRNN, that models the input data in a hierarchical manner. In the MPRNN framework, the input data is represented at several (>_ 3) time-resolutions, each of which is modeled by a specific RNN sub-module. For example, the RNN sub-module that deals with the finest resolution may model temporal relationship only within a phoneme, while the RNN sub-module handling the most coarse resolution may capture only the relationship between utterances such as speaker information. We perform experiments using simulated dialogue-like mixtures and show that MPRNN has greater model capacity, and it outperforms the current state-of-the-art DPRNN framework especially in online processing scenarios.}}, author = {{Kinoshita, Keisuke and von Neumann, Thilo and Delcroix, Marc and Nakatani, Tomohiro and Haeb-Umbach, Reinhold}}, booktitle = {{Proc. Interspeech 2020}}, pages = {{2652--2656}}, title = {{{Multi-Path RNN for Hierarchical Modeling of Long Sequential Data and its Application to Speaker Stream Separation}}}, doi = {{10.21437/Interspeech.2020-2388}}, year = {{2020}}, } @misc{48940, author = {{Treder, Alexandra}}, publisher = {{Friedrich-Schiller-Universität}}, title = {{{Diskriminierung begegnen – Vielfalt gestalten : Veranstaltungsreihe von und für Studierende und Interessierte}}}, year = {{2020}}, } @misc{48941, author = {{Meyberg, Sora and Treder, Alexandra}}, publisher = {{Friedrich-Schiller-Universität}}, title = {{{Mit Methoden der Drama- und Erzählpädagogik Fremdsprachen lernen}}}, year = {{2020}}, } @inproceedings{20753, abstract = {{In this paper we present our system for the detection and classification of acoustic scenes and events (DCASE) 2020 Challenge Task 4: Sound event detection and separation in domestic environments. We introduce two new models: the forward-backward convolutional recurrent neural network (FBCRNN) and the tag-conditioned convolutional neural network (CNN). The FBCRNN employs two recurrent neural network (RNN) classifiers sharing the same CNN for preprocessing. With one RNN processing a recording in forward direction and the other in backward direction, the two networks are trained to jointly predict audio tags, i.e., weak labels, at each time step within a recording, given that at each time step they have jointly processed the whole recording. The proposed training encourages the classifiers to tag events as soon as possible. Therefore, after training, the networks can be applied to shorter audio segments of, e.g., 200ms, allowing sound event detection (SED). Further, we propose a tag-conditioned CNN to complement SED. It is trained to predict strong labels while using (predicted) tags, i.e., weak labels, as additional input. For training pseudo strong labels from a FBCRNN ensemble are used. The presented system scored the fourth and third place in the systems and teams rankings, respectively. Subsequent improvements allow our system to even outperform the challenge baseline and winner systems in average by, respectively, 18.0% and 2.2% event-based F1-score on the validation set. Source code is publicly available at https://github.com/fgnt/pb_sed.}}, author = {{Ebbers, Janek and Haeb-Umbach, Reinhold}}, booktitle = {{Proceedings of the Detection and Classification of Acoustic Scenes and Events 2020 Workshop (DCASE2020)}}, title = {{{Forward-Backward Convolutional Recurrent Neural Networks and Tag-Conditioned Convolutional Neural Networks for Weakly Labeled Semi-Supervised Sound Event Detection}}}, year = {{2020}}, } @article{49467, author = {{Trang, S. and Trenz, M. and Weiger, W. and Tarafdar, M. and Cheung, C.}}, journal = {{European Journal of Information Systems}}, pages = {{415--428}}, title = {{{One app to trace them all? Examining app specifications for mass acceptance of contact-tracing apps}}}, volume = {{29}}, year = {{2020}}, } @misc{49599, author = {{Fastlabend-Vargas, Daniel}}, publisher = {{Zwischentöne.info }}, title = {{{Geschichte(n) der deutschen Migrationsgesellschaft. Jugendliche erzählen begründete historische Geschichten Eine Unterrichtsreihe für das Portal Zwischentöne.info }}}, year = {{2020}}, } @misc{49767, author = {{Huybrechts, Yves}}, publisher = {{BelgienNet}}, title = {{{"Die Bombardierung von Brüssel - teil 1" (PODCAST)}}}, year = {{2020}}, } @misc{49756, author = {{Huybrechts, Yves}}, publisher = {{BelgienNet}}, title = {{{"Ein Gespräch mit Guy Vanhengel - Ein Gespräch mit dem Vizepräsidenten des Brüsseler Parlaments, in zwei Teilen." (VIDEO)}}}, year = {{2020}}, } @misc{49750, author = {{Huybrechts, Yves}}, publisher = {{BelgienNet}}, title = {{{Interview zur Ausstellung "Rubens und der Barock im Norden" - 2 Teile (VIDEO)}}}, year = {{2020}}, } @inbook{49869, author = {{Neiske, Iris and Bücker, Diana}}, booktitle = {{Medienpädagogik als Schlüsseldisziplin in einer mediatisierten Welt. Perspektiven aus Theorie, Empirie und Praxis 37}}, issn = {{1424-3636}}, pages = {{299--312}}, title = {{{Medienpädagogik und Hochschuldidaktik}}}, year = {{2020}}, } @article{32154, author = {{Karsten, Andrea and Weisberg, Jan}}, journal = {{JoSch - Journal der Schreibwissenschaft}}, pages = {{34 -- 42}}, publisher = {{wbv}}, title = {{{Profession und Disziplin. Ein Schreibgespräch über den Weg durch die Fächer, Schreibdidaktik als Feldforschung (und - nebenbei - die Rettung der Schriftkultur). }}}, doi = {{10.3278/JOS2002W}}, volume = {{2}}, year = {{2020}}, } @article{50279, author = {{Daniel-Söltenfuß, Desiree}}, journal = {{bwp@}}, title = {{{Aushandlungsprozesse über Freiheiten und Grenzen im selbstregulierten Lernen. Erwartungen und Handlungsmuster bei Schüler*innen und Lehrpersonen im Übergangssystem}}}, volume = {{38}}, year = {{2020}}, } @article{25806, author = {{Lübbecke, Silvia and Schnedler, Wendelin}}, issn = {{1058-6407}}, journal = {{Journal of Economics & Management Strategy}}, pages = {{420--438}}, title = {{{Don't patronize me! An experiment on preferences for authorship}}}, doi = {{10.1111/jems.12347}}, year = {{2020}}, } @inbook{50697, author = {{Albus, Vanessa}}, booktitle = {{Handbuch Lehrerinnen- und Lehrerbildung}}, editor = {{Cramer, Coli and König, Johannes and Rothland, Martin and Blömeke, Sigrid}}, pages = {{495--500}}, title = {{{Philosophie und Ethik in der Lehrerinnen und Lehrerbildung}}}, year = {{2020}}, } @article{50865, author = {{Blank, Andreas}}, journal = {{Journal of Modern Philosophy}}, number = {{10}}, pages = {{1--18}}, title = {{{“D’Holbach on (Dis-)Esteeming Talent.” }}}, volume = {{2}}, year = {{2020}}, } @article{50926, author = {{Blank, Andreas}}, journal = {{Tópicos. Revista de filosofía de la Universidad de Santa Fe }}, number = {{1}}, pages = {{149--176}}, title = {{{“Leibniz: sobre las presunciones y la simplicidad cognitiva” }}}, volume = {{39}}, year = {{2020}}, } @article{50866, author = {{Blank, Andreas}}, journal = {{European Journal of Philosophy}}, number = {{4}}, pages = {{337--349}}, title = {{{“Helvétius’s Challenge: Moral Luck, Political Constitutions and the Economy of Esteem.” }}}, volume = {{28}}, year = {{2020}}, } @article{51316, abstract = {{AbstractRight-wing populism has strongly polarizing effects in politics, education and science—a problem which this article aims to adress. Instead of claiming a demarcation between science and education on the one hand and right-wing populist ideology on the other, we initially focus on continuities. At the same time, we are concerned with finding a critical distance towards right-wing populism. Using the theoretical framework of boundary-work we therefore analyse a case of right-wing populist educational and scientific efforts. Boundary-work can occur in an institutional, content-related and epistemic dimension. While we identify strong continuities in the institutional and content-related dimensions, we see the main difference in the epistemic dimension. In conclusion, we use the results of our analysis to develop a critical position as scientists and educationists towards right-wing populism, drawing consequences for the epistemic, content-related and institutional dimensions.}}, author = {{Haker, Christoph and Otterspeer, Lukas}}, issn = {{2364-0014}}, journal = {{Zeitschrift für Weiterbildungsforschung}}, keywords = {{General Earth and Planetary Sciences, General Environmental Science}}, number = {{3}}, pages = {{357--376}}, title = {{{Neither demarcation nor confrontation. Finding a critical position towards right-wing populism}}}, doi = {{10.1007/s40955-020-00174-z}}, volume = {{43}}, year = {{2020}}, } @article{51317, author = {{Haker, Christoph and Otterspeer, Lukas}}, issn = {{2195-867X}}, journal = {{Zeitschrift für Diskursforschung}}, number = {{2}}, pages = {{250--271}}, publisher = {{Beltz Juventa}}, title = {{{Right-Wing Populism and Educational Research. Exploring theoretical and methodological perspectives}}}, doi = {{10.3262/ZFD2002250}}, year = {{2020}}, } @article{51319, abstract = {{Frank Beier, Franziska Wyßuwa und Elisa Wagner diskutieren in ihrem aktuellen Beitrag Fallinterpretationen zwischen Theorieund Anwendungsbezug den praktischen Nutzen wissenschaftlicher Erkenntnisse, insbesondere von Theorie, für die Schule und Erwachsenenbildung. Wir greifen ihre Position in einer dialogischen Replik kritisch auf. Die Form des Dialogs bietet uns die Möglichkeit, unsere Perspektiven als Erziehungswissenschaftler, Lehrer und Soziologe in die Debatte einzubringen. Wir möchten so die eingespielten Grenzziehungen in ‚Theorie- Praxis-Debatten‘ irritieren und Beiers, Wyßuwas und Wagners Plädoyer für die Stärke wissenschaftlicher Theorie ergänzen. Diese Stärke kommt weniger zur Geltung, wenn Theorie Kontingenz schließende und mehr, wenn sie Kontingenz öffnende Effekte hat. Zudem sollte Theorie nicht auf Modelle oder auf Theorien begrenzter Reichweite beschränkt und die konkrete Verwendung von Theorie zum Gegenstand der (Selbst)Reflexion und (Selbst)Kritik werden.}}, author = {{Haker, Christoph and Otterspeer, Lukas}}, issn = {{2567-5974}}, journal = {{Debatte. Beiträge zur Erwachsenenbildung}}, keywords = {{Rehabilitation, Physical Therapy, Sports Therapy and Rehabilitation, General Medicine}}, number = {{1-2020}}, pages = {{49--63}}, publisher = {{Verlag Barbara Budrich GmbH}}, title = {{{Zum praktischen Nutzen von Theorie. Ein Dialog über die Grenzen von Bildungspraxis, Erziehungswissenschaft und Soziologie}}}, doi = {{10.3224/debatte.v3i1.05}}, volume = {{3}}, year = {{2020}}, } @article{51318, author = {{Alvear, Rafael and Haker, Christoph}}, journal = {{MAD}}, number = {{42}}, pages = {{1–9}}, title = {{{Teoría de sistemas crítica y teoría crítica de sistemas sociales: Alegato por una distinción necesaria}}}, year = {{2020}}, } @book{48045, editor = {{Münzmay, Andreas and Aquavella-RauchJ, Stefanie and Veit, Joachim}}, publisher = {{Musikwissenschaftliches Seminar der Universität Paderborn und der Hochschule für Musik Detmold}}, title = {{{Brückenschläge zwischen Musikwissenschaft und Informatik. Theoretische und praktische Aspekte der Kooperation}}}, doi = {{10.25366/2020.87}}, volume = {{3}}, year = {{2020}}, } @inbook{47474, author = {{Münzmay, Andreas and Aquavella-Rauch, Stefanie and Veit, Joachim}}, booktitle = {{Brückenschläge zwischen Musikwissenschaft und Informatik. Theoretische und praktische Aspekte der Kooperation}}, editor = {{Münzmay, Andreas and Acquavella-Rauch, Stefanie and Veit, Joachim}}, pages = {{XI--XV}}, publisher = {{Musikwissenschaftliches Seminar der Universität Paderborn und der Hochschule für Musik Detmold}}, title = {{{Brückenschläge zwischen Musikwissenschaft und Informatik – Vorbemerkung}}}, doi = {{10.25366/2020.88}}, volume = {{3}}, year = {{2020}}, } @article{47476, abstract = {{Digital data on tangible and intangible cultural assets is an essential part of daily life, communication and experience. It has a lasting influence on the perception of cultural identity as well as on the interactions between research, the cultural economy and society. Throughout the last three decades, many cultural heritage institutions have contributed a wealth of digital representations of cultural assets (2D digital reproductions of paintings, sheet music, 3D digital models of sculptures, monuments, rooms, buildings), audio-visual data (music, film, stage performances), and procedural research data such as encoding and annotation formats. The long-term preservation and FAIR availability of research data from the cultural heritage domain is fundamentally important, not only for future academic success in the humanities but also for the cultural identity of individuals and society as a whole. Up to now, no coordinated effort for professional research data management on a national level exists in Germany. NFDI4Culture aims to fill this gap and create a user-centered, research-driven infrastructure that will cover a broad range of research domains from musicology, art history and architecture to performance, theatre, film, and media studies. The research landscape addressed by the consortium is characterized by strong institutional differentiation. Research units in the consortium's community of interest comprise university institutes, art colleges, academies, galleries, libraries, archives and museums. This diverse landscape is also characterized by an abundance of research objects, methodologies and a great potential for data-driven research. In a unique effort carried out by the applicant and co-applicants of this proposal and ten academic societies, this community is interconnected for the first time through a federated approach that is ideally suited to the needs of the participating researchers. To promote collaboration within the NFDI, to share knowledge and technology and to provide extensive support for its users have been the guiding principles of the consortium from the beginning and will be at the heart of all workflows and decision-making processes. Thanks to these principles, NFDI4Culture has gathered strong support ranging from individual researchers to high-level cultural heritage organizations such as the UNESCO, the International Council of Museums, the Open Knowledge Foundation and Wikimedia. On this basis, NFDI4Culture will take innovative measures that promote a cultural change towards a more reflective and sustainable handling of research data and at the same time boost qualification and professionalization in data-driven research in the domain of cultural heritage. This will create a long-lasting impact on science, cultural economy and society as a whole.}}, author = {{Altenhöner, Reinhard and Blümel, Ina and Boehm, Franziska and Bove, Jens and Bicher, Katrin and Bracht, Christian and Brand, Ortrun and Dieckmann, Lisa and Effinger, Maria and Hagener, Malte and Hammes, Andrea and Heller, Lambert and Kailus, Angela and Kohle, Hubertus and Ludwig, Jens and Münzmay, Andreas and Pittroff, Sarah and Razum, Matthias and Röwenstrunk, Daniel and Sack, Harald and Simon, Holger and Schmidt, Dörte and Schrade, Torsten and Walzel, Annika-Valeska and Wiermann, Barbara}}, issn = {{2367-7163}}, journal = {{Research Ideas and Outcomes}}, keywords = {{Research Data Management}}, publisher = {{Pensoft Publishers}}, title = {{{NFDI4Culture - Consortium for research data on material and immaterial cultural heritage}}}, doi = {{10.3897/rio.6.e57036}}, volume = {{6}}, year = {{2020}}, } @unpublished{51520, author = {{Hilgert, Joachim and Brennecken, D. and Ciardo, L.}}, title = {{{Algebraically Independent Generators for the Algebra of Invariant Differential Operators on SLn(ℝ)/SOn(ℝ)}}}, year = {{2020}}, } @techreport{51690, author = {{Maaz, Kai and Jungkamp, Burkhard and Antony, Johanna and Becker-Mrotzek, Michael and Chapman, Azalea and Diedrich, Martina and Eger, Joanna and Eickelmann, Birgit and Hanschmann, Felix and Hebborn, Klaus and Heinrich, Martin and Iscan-Pilic, Gülay and Leiss, Dominik and Mülhens-Hackbarth, Ines and Pech, Miriam and Scheinkönig, Christine and Siebert, Matthias and Teichert, Ute and Wagner, Lucia and Wassmuth, Stephan and Werner, Birgit and Wojciechowicz, Anna Aleksandra and Wrase, Michael}}, title = {{{Schule in Zeiten der Pandemie. Empfehlungen für die Gestaltung des Schuljahres 2020/21. Stellungnahme der Expert*innenkommission der Friedrich-Ebert-Stiftung}}}, year = {{2020}}, } @misc{51813, author = {{Schmitt, Martin}}, title = {{{Die Geschichte des Potsdamer Rechenzentrums: Sozialistische Computernutzung und die Digitalisierung in Ostdeutschland}}}, year = {{2020}}, } @techreport{14901, abstract = {{This study investigates whether country risk factors, including political and fiscal budget risk, attenuate the effectiveness of tax policy tools that aim to encourage corporate risk-taking. Exploiting a cross-country panel, we predict and find that the effectiveness of loss offset rules and tax rate changes is fully attenuated for firms located in high-risk countries. We document the attenuating effect of country risk is more pronounced in high-tax countries or when countries increase their corporate tax rate. Additional tests around the U.S. federal budget crises from 2011 to 2013 indicate that temporarily heightened fiscal budget risk attenuates the effectiveness of loss offset rules even in countries with low political risk. We identify conditions (low political and low fiscal budget risk) under which targeted tax policy tools effectively stimulate risk-taking. This suggests that ensuring taxpayers receive tax refunds is important in times of economic crises with budgetary or political challenges. }}, author = {{Osswald, Benjamin and Sureth-Sloane, Caren}}, title = {{{Do Country Risk Factors Attenuate the Effect of Tax Loss Incentives on Corporate Risk-Taking?}}}, doi = {{10.2139/ssrn.3297418}}, volume = {{TRR 266 Accounting for Transparency Working Paper Series No. 28}}, year = {{2020}}, } @article{23827, author = {{Dawood, Abbas O. and Al-Lami, Abbas Jarullah Sangoor and Al-Rkaby, Alaa H.J.}}, issn = {{2214-5095}}, journal = {{Case Studies in Construction Materials}}, title = {{{Behavior of tall masonry chimneys under wind loadings using CFD technique}}}, doi = {{10.1016/j.cscm.2020.e00451}}, year = {{2020}}, } @article{52711, author = {{Jenert, Tobias}}, journal = {{Zeitschrift für Hochschulentwicklung}}, number = {{4}}, pages = {{203--222}}, title = {{{Überlegungen auf dem Weg zu einer Theorie lehrbezogenen Wandels an Hochschulen}}}, volume = {{15}}, year = {{2020}}, } @phdthesis{48925, author = {{Peitz, Nina-Madeleine}}, publisher = {{Friedrich-Alexander Universität Erlangen-Nürnberg}}, title = {{{Professional Development of Vocational Teachers in Language-Sensitive Content Teaching–A Study Visit Abroad as Design-Based Research Intervention for Vocational Teachers Working in School-to-Work Transition Phases}}}, year = {{2020}}, } @inbook{24959, author = {{Bauer, Anna and Reinhold, Peter and Sacher, Marc}}, booktitle = {{Naturwissenschaftliche Bildung als Grundlage für berufliche und gesellschaftliche Teilhabe}}, editor = {{Maurer, Christian}}, pages = {{632--635}}, publisher = {{Gesellschaft für Didaktik der Chemie und Physik}}, title = {{{Erhebung der experimentellen Performanz (Physik-)Studierender}}}, year = {{2019}}, } @article{19945, abstract = {{Many PDEs (Burgers' equation, KdV, Camassa-Holm, Euler's fluid equations, …) can be formulated as infinite-dimensional Lie-Poisson systems. These are Hamiltonian systems on manifolds equipped with Poisson brackets. The Poisson structure is connected to conservation properties and other geometric features of solutions to the PDE and, therefore, of great interest for numerical integration. For the example of Burgers' equations and related PDEs we use Clebsch variables to lift the original system to a collective Hamiltonian system on a symplectic manifold whose structure is related to the original Lie-Poisson structure. On the collective Hamiltonian system a symplectic integrator can be applied. Our numerical examples show excellent conservation properties and indicate that the disadvantage of an increased phase-space dimension can be outweighed by the advantage of symplectic integration.}}, author = {{McLachlan, Robert I and Offen, Christian and Tapley, Benjamin K}}, issn = {{2158-2505}}, journal = {{Journal of Computational Dynamics}}, number = {{1}}, pages = {{111--130}}, publisher = {{American Institute of Mathematical Sciences (AIMS)}}, title = {{{Symplectic integration of PDEs using Clebsch variables}}}, doi = {{10.3934/jcd.2019005}}, volume = {{6}}, year = {{2019}}, } @inproceedings{3287, abstract = {{For optimal placement and orchestration of network services, it is crucial that their structure and semantics are specified clearly and comprehensively and are available to an orchestrator. Existing specification approaches are either ambiguous or miss important aspects regarding the behavior of virtual network functions (VNFs) forming a service. We propose to formally and unambiguously specify the behavior of these functions and services using Queuing Petri Nets (QPNs). QPNs are an established method that allows to express queuing, synchronization, stochastically distributed processing delays, and changing traffic volume and characteristics at each VNF. With QPNs, multiple VNFs can be connected to complete network services in any structure, even specifying bidirectional network services containing loops. We discuss how management and orchestration systems can benefit from our clear and comprehensive specification approach, leading to better placement of VNFs and improved Quality of Service. Another benefit of formally specifying network services with QPNs are diverse analysis options, which allow valuable insights such as the distribution of end-to-end delay. We propose a tool-based workflow that supports the specification of network services and the automatic generation of corresponding simulation code to enable an in-depth analysis of their behavior and performance.}}, author = {{Schneider, Stefan Balthasar and Sharma, Arnab and Karl, Holger and Wehrheim, Heike}}, booktitle = {{2019 IFIP/IEEE International Symposium on Integrated Network Management (IM)}}, location = {{Washington, DC, USA}}, pages = {{116----124}}, publisher = {{IFIP}}, title = {{{Specifying and Analyzing Virtual Network Services Using Queuing Petri Nets}}}, year = {{2019}}, } @inproceedings{21177, abstract = {{Attention mechanisms have seen some success for natural language processing downstream tasks in recent years and generated new state-of-the-art results. A thorough evaluation of the attention mechanism for the task of Argumentation Mining is missing. With this paper, we report a comparative evaluation of attention layers in combination with a bidirectional long short-term memory network, which is the current state-of-the-art approach for the unit segmentation task. We also compare sentence-level contextualized word embeddings to pre-generated ones. Our findings suggest that for this task, the additional attention layer does not improve the performance. In most cases, contextualized embeddings do also not show an improvement on the score achieved by pre-defined embeddings.}}, author = {{Spliethöver, Maximilian and Klaff, Jonas and Heuer, Hendrik}}, booktitle = {{Proceedings of the 6th Workshop on Argument Mining}}, location = {{Florence, Italy}}, pages = {{74--82}}, publisher = {{Association for Computational Linguistics}}, title = {{{Is It Worth the Attention? A Comparative Evaluation of Attention Layers for Argument Unit Segmentation}}}, doi = {{10.18653/v1/W19-4509}}, year = {{2019}}, } @inbook{21426, abstract = {{This chapter examines the drivers of corporate income tax complexity for multinational corporations in South Africa. Based on unique data from a global survey of tax consultants which was conducted in 2016 by Hoppe et al, novel insights can be provided into the complexity of the South African tax system. The data enable a comparison of South Africa with the global mean of tax complexity, as well as with its major trade and investment partners. It is further possible to distinguish between different areas of tax complexity, ie, tax code complexity (complexity inherent in the different regulations of the tax code) and tax framework complexity (complexity that arises from the features and processes of a tax system). Frequent changes in tax regulations, ambiguity and interpretation, as well as record-keeping, are found to be the most important complexity drivers in the tax code of South Africa. The analysis further highlights that anti-avoidance provisions, such as transfer pricing and controlled foreign corporation rules, are perceived as most complex. With respect to tax framework complexity, the poor disclosure of audit selection criteria, the lack of experience or technical skills of tax officers in the audit process and problems associated with tax refunds appear to be serious concerns. Even though South Africa’s overall tax system complexity does not seem to differ very much from other related countries, a closer look into the details reveals a number of future challenges.}}, author = {{Hoppe, Thomas and Safaei, Reyhaneh and Singleton, Amanda and Sureth-Sloane, Caren}}, booktitle = {{Tax Simplification - An African Perspective}}, editor = {{Evans, Chris and Franzsen, Riël and Stack, Elizabeth}}, isbn = {{978-1-920538-96-5}}, pages = {{267--293}}, publisher = {{Pretoria University Law Press}}, title = {{{Tax Complexity for Multinational Corporations in South Africa - Evidence from a Global Survey}}}, year = {{2019}}, } @inproceedings{17329, author = {{Graf-Schlattmann, Marcel and Meister, Dorothee M. and Oevel, Gudrun and Wilde, Melanie}}, booktitle = {{Hochschulforum Digitalisierung (2019). Strategies Beyond Borders – Transforming Higher Education in a Digital Age. Book of Abstracts}}, publisher = {{Hochschulforum Digitalisierung}}, title = {{{Success Factors for the Consolidation and Anchoring of Digitalisation Projects}}}, year = {{2019}}, } @inbook{17330, author = {{Graf-Schlattmann, Marcel and Meister, Dorothee M. and Oevel, Gudrun and Wilde, Melanie}}, booktitle = {{Teilhabe an Bildung und Wissenschaft}}, editor = {{Hafer, J.}}, publisher = {{Waxmann}}, title = {{{Digitalisierungsstrategien auf dem Prüfstand – eine empirische Untersuchung auf Basis der Grounded-Theory-Methodologie an deutschen Hochschulen}}}, volume = {{75}}, year = {{2019}}, } @misc{17332, author = {{Oevel, Gudrun}}, title = {{{Stellungnahme der DFG-Kommission zur Evaluierung des Förderprogramms „Fachinformationsdienste für die Wissenschaft“}}}, year = {{2019}}, } @inproceedings{18874, author = {{Reinhold, Jannik and Frank, Maximilian and Koldewey, Christian and Dumitrescu, Roman and Gausemeier, Jürgen}}, booktitle = {{Proceedings of the ISPIM Connects Ottawa – Innovation for Local and Global Impact}}, publisher = {{LUT Scientific and Expertise Publications}}, title = {{{Competence-based Planning of Value Networks for Smart Services}}}, year = {{2019}}, } @article{19446, abstract = {{We present a multi-channel database of overlapping speech for training, evaluation, and detailed analysis of source separation and extraction algorithms: SMS-WSJ -- Spatialized Multi-Speaker Wall Street Journal. It consists of artificially mixed speech taken from the WSJ database, but unlike earlier databases we consider all WSJ0+1 utterances and take care of strictly separating the speaker sets present in the training, validation and test sets. When spatializing the data we ensure a high degree of randomness w.r.t. room size, array center and rotation, as well as speaker position. Furthermore, this paper offers a critical assessment of recently proposed measures of source separation performance. Alongside the code to generate the database we provide a source separation baseline and a Kaldi recipe with competitive word error rates to provide common ground for evaluation.}}, author = {{Drude, Lukas and Heitkaemper, Jens and Boeddeker, Christoph and Haeb-Umbach, Reinhold}}, journal = {{ArXiv e-prints}}, title = {{{SMS-WSJ: Database, performance measures, and baseline recipe for multi-channel source separation and recognition}}}, year = {{2019}}, } @article{19449, abstract = {{Wenn akustische Signalverarbeitung mit automatisiertem Lernen verknüpft wird: Nachrichtentechniker arbeiten mit mehreren Mikrofonen und tiefen neuronalen Netzen an besserer Spracherkennung unter widrigsten Bedingungen. Von solchen Sensornetzwerken könnten langfristig auch digitale Sprachassistenten profitieren.}}, author = {{Haeb-Umbach, Reinhold}}, journal = {{DFG forschung 1/2019}}, pages = {{12--15}}, title = {{{Lektionen für Alexa und Co?!}}}, doi = {{10.1002/fors.201970104}}, year = {{2019}}, } @inproceedings{9270, abstract = {{As 5G and network function virtualization (NFV) are maturing, it becomes crucial to demonstrate their feasibility and benefits by means of vertical scenarios. While 5GPPP has identified smart manufacturing as one of the most important vertical industries, there is still a lack of specific, practical use cases. Using the experience from a large-scale manufacturing company, Weidm{\"u}ller Group, we present a detailed use case that reflects the needs of real-world manufacturers. We also propose an architecture with specific network services and virtual network functions (VNFs) that realize the use case in practice. As a proof of concept, we implement the required services and deploy them on an emulation-based prototyping platform. Our experimental results indicate that a fully virtualized smart manufacturing use case is not only feasible but also reduces machine interconnection and configuration time and thus improves productivity by orders of magnitude.}}, author = {{Schneider, Stefan Balthasar and Peuster, Manuel and Behnke, Daniel and Marcel, Müller and Bök, Patrick-Benjamin and Karl, Holger}}, booktitle = {{European Conference on Networks and Communications (EuCNC)}}, keywords = {{5g, vertical, smart manufacturing, nfv}}, publisher = {{IEEE}}, title = {{{Putting 5G into Production: Realizing a Smart Manufacturing Vertical Scenario}}}, doi = {{10.1109/eucnc.2019.8802016}}, year = {{2019}}, } @inproceedings{9275, abstract = {{In the last years, store-oriented software ecosystems are gaining more and more attention from a business perspective. In these ecosystems, third-party developers upload extensions to a store which can be downloaded by end users. While the functional scope of such ecosystems is relatively similar, the underlying business models differ greatly in and between their different product domains (e.g. Mobile Phone, Smart TV). This variability, in turn, makes it challenging for store providers to find a business model that fits their own needs. To handle this variability, we introduce the Business Variability Model (BVM) for modeling business model decisions. The basis of these decisions is the analysis of 60 store-oriented software ecosystems in eight different product domains. We map their business model decisions to the Business Model Canvas, condense them to a variability model and discuss particular variants and their dependencies. Our work provides store providers a new approach for modeling business model decisions together with insights of existing business models. This, in turn, supports them in creating new and improving existing business models.}}, author = {{Gottschalk, Sebastian and Rittmeier, Florian and Engels, Gregor}}, booktitle = {{Business Modeling and Software Design}}, editor = {{Shishkov, Boris}}, keywords = {{Software Ecosystems, Business Models, Variabilities}}, location = {{Lisbon}}, pages = {{153--169}}, publisher = {{Springer International Publishing}}, title = {{{Business Models of Store-Oriented Software Ecosystems: A Variability Modeling Approach}}}, doi = {{10.1007/978-3-030-24854-3_10}}, year = {{2019}}, } @article{8113, abstract = {{The ongoing softwarization of networks creates a big need for automated testing solutions to ensure service quality. This becomes even more important if agile environments with short time to market and high demands, in terms of service performance and availability, are considered. In this paper, we introduce a novel testing solution for virtualized, microservice-based network functions and services, which we base on TTCN-3, a well known testing language defined by the European standards institute (ETSI). We use TTCN-3 not only for functional testing but also answer the question whether TTCN-3 can be used for performance profiling tasks as well. Finally, we demonstrate the proposed concepts and solutions in a case study using our open-source prototype to test and profile a chained network service.}}, author = {{Peuster, Manuel and Dröge, Christian and Boos, Clemens and Karl, Holger}}, issn = {{2405-9595}}, journal = {{ICT Express}}, publisher = {{Elsevier BV}}, title = {{{Joint testing and profiling of microservice-based network services using TTCN-3}}}, doi = {{10.1016/j.icte.2019.02.001}}, year = {{2019}}, } @misc{8312, author = {{Bäumer, Frederik Simon and Geierhos, Michaela}}, booktitle = {{encyclopedia.pub}}, keywords = {{OTF Computing, Natural Language Processing, Requirements Engineering}}, publisher = {{MDPI}}, title = {{{Requirements Engineering in OTF-Computing}}}, year = {{2019}}, }