@inbook{20573, author = {{Koldewey, Christian and Reinhold, Jannik and Dumitrescu, Roman}}, booktitle = {{Der Geschäftsmodell-Toolguide}}, editor = {{Buchholz, Birgit and Bürger, Matthias}}, pages = {{138 -- 143}}, publisher = {{Campus Verlag}}, title = {{{Geschäftsmodell-Roadmapping}}}, year = {{2020}}, } @article{20644, abstract = {{Plasmonic nanoantennas for visible and infrared radiation strongly improve the interaction of light with the matter on the nanoscale due to their strong near-field enhancement. In this study, we investigate a double-resonant plasmonic nanoantenna, which makes use of plasmonic field enhancement, enhanced outcoupling of second harmonic light, and resonant lattice effects. Using this design, we demonstrate how the efficiency of second harmonic generation can be increased significantly by fully embedding the nanoantennas into nonlinear dielectric material ZnO, instead of placing them on the surface. Investigating two different processes, we found that the best fabrication route is embedding the gold nanoantennas in ZnO using an MBE overgrowth process where a thin ZnO layer was deposited on nanoantennas fabricated on a ZnO substrate. In addition, second harmonic generation measurements show that the embedding leads to an enhancement compared to the emission of nanoantennas placed on the ZnO substrate surface. These promising results facilitate further research to determine the influence of the periodicity of the nanoantenna arrangement of the resulting SHG signal.}}, author = {{Volmert, Ruth and Weber, Nils and Meier, Cedrik}}, issn = {{1089-7550}}, journal = {{Journal of Applied Physics}}, number = {{4}}, title = {{{Nanoantennas embedded in zinc oxide for second harmonic generation enhancement}}}, doi = {{10.1063/5.0012813}}, volume = {{128}}, year = {{2020}}, } @inproceedings{20647, author = {{Aßmuth, Verena and Teutenberg, Dominik and Meschut, Gerson and Stepanov, Sergey and Stalling, Annika and Ihde, Jörg and Mayer, Bernd}}, booktitle = {{20. Kolloquium Gemeinsame Forschung in der Klebtechnik}}, location = {{Würzburg}}, pages = {{97--98}}, title = {{{Offenzeit plasmaaktivierter Polymeroberflächen für robuste klebtechnische Prozesse – OffPlas}}}, year = {{2020}}, } @inproceedings{20650, author = {{Aßmuth, Verena and Teutenberg, Dominik and Meschut, Gerson}}, booktitle = {{20. Kolloquium Gemeinsame Forschung in der Klebtechnik}}, location = {{Würzburg}}, pages = {{99--101}}, title = {{{Analyse und Vorhersage rezeptur- und zeitabhängiger Enthaftungserscheinungen geklebter SMC-Bauteile}}}, year = {{2020}}, } @inproceedings{20652, author = {{Aßmuth, Verena and Teutenberg, Dominik and Meschut, Gerson and Philipp, Jens and Stammen, Elisabeth and Dilger, Klaus}}, booktitle = {{20. Kolloquium Gemeinsame Forschung in der Klebtechnik}}, location = {{Würzburg}}, pages = {{85--87}}, title = {{{Lokales Konzept zur Auslegung von elastischen Klebverbindungen (LoKAl)}}}, year = {{2020}}, } @article{20673, author = {{Aßmuth, Verena and Teutenberg, Dominik and Meschut, Gerson and Stepanov, Sergey and Ihde, Jörg and Mayer, Bernd}}, issn = {{0032-1338}}, journal = {{Plastverarbeiter}}, number = {{11}}, pages = {{22--25}}, publisher = {{Hüthig GmbH}}, title = {{{Aktivieren für robuste Klebprozesse - Wie lange sind plasmaaktivierte Polymeroberflächen offen?}}}, volume = {{71}}, year = {{2020}}, } @book{20674, author = {{Aßmuth, Verena and Teutenberg, Dominik and Meschut, Gerson and Stepanov, Sergey and Ihde, Jörg and Mayer, Bernd}}, pages = {{116}}, publisher = {{DECHEMA Gesellschaft für Chemische Technik und Biotechnologie e.V. }}, title = {{{Offenzeit plasmaaktivierter Polymeroberflächen für robuste klebtechnische Prozesse}}}, year = {{2020}}, } @book{20676, author = {{Aßmuth, Verena and Teutenberg, Dominik and Meschut, Gerson}}, pages = {{109}}, publisher = {{DECHEMA Gesellschaft für Chemische Technik und Biotechnologie e.V.}}, title = {{{Analyse rezepturabhängiger und alterungsbedingter Enthaftungserscheinungen geklebter SMC-Bauteile}}}, year = {{2020}}, } @inproceedings{20695, author = {{Boeddeker, Christoph and Nakatani, Tomohiro and Kinoshita, Keisuke and Haeb-Umbach, Reinhold}}, booktitle = {{ICASSP 2020 - 2020 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)}}, isbn = {{9781509066315}}, title = {{{Jointly Optimal Dereverberation and Beamforming}}}, doi = {{10.1109/icassp40776.2020.9054393}}, year = {{2020}}, } @inproceedings{20700, author = {{Boeddeker, Christoph and Cord-Landwehr, Tobias and Heitkaemper, Jens and Zorila, Catalin and Hayakawa, Daichi and Li, Mohan and Liu, Min and Doddipatla, Rama and Haeb-Umbach, Reinhold}}, booktitle = {{Proc. CHiME 2020 Workshop on Speech Processing in Everyday Environments}}, title = {{{Towards a speaker diarization system for the CHiME 2020 dinner party transcription}}}, year = {{2020}}, } @inproceedings{20701, abstract = {{This paper describes Asteroid , the PyTorch -based audio source separation toolkit for researchers. Inspired by the most successful neural source separation systems, it provides all neural building blocks required to build such a system. To improve reproducibility, Kaldi-style recipes on common audio source separation datasets are also provided. This paper describes the software architecture of Asteroid and its most important features. By showing experimental results obtained with Asteroid ’s recipes, we show that our implementations are at least on par with most results reported in reference papers. The toolkit is publicly available at github.com/mpariente/asteroid.}}, author = {{Pariente, Manuel and Cornell, Samuele and Cosentino, Joris and Sivasankaran, Sunit and Tzinis, Efthymios and Heitkaemper, Jens and Olvera, Michel and Stöter, Fabian-Robert and Hu, Mathieu and Martín-Doñas, Juan M. and Ditter, David and Frank, Ariel and Deleforge, Antoine and Vincent, Emmanuel}}, booktitle = {{Interspeech 2020}}, title = {{{Asteroid: The PyTorch-Based Audio Source Separation Toolkit for Researchers}}}, doi = {{10.21437/interspeech.2020-1673}}, year = {{2020}}, } @misc{20703, issn = {{1424-3636}}, title = {{{Orientierungen in der digitalen Welt}}}, doi = {{10.21240/mpaed/39.x}}, year = {{2020}}, } @book{20705, editor = {{Herzig, Bardo and Klar, Tilman-Mathies and Martin, Alexander and Meister, Dorothee}}, issn = {{1424-3636}}, title = {{{Orientierungen in der digitalen Welt}}}, doi = {{10.21240/mpaed/39.x}}, year = {{2020}}, } @article{20707, abstract = {{Mediatisierung und Digitalisierung sind zu Synonymen für gesellschaftliche Transformationsprozesse geworden, die sich in tiefgreifenden Veränderungen unserer Lebenspraxen in Alltag, Freizeit und Beruf niederschlagen. Viele technologische Entwicklungen führen auf der einen Seite zu bereichernden Formen der Lebensgestaltung und Erhöhung der Lebensqualität, auf der anderen Seite stellen sie Selbstbestimmung, Teilhabe und Autonomie aber auch grundlegend in Frage. Wenngleich zwar der Begriff Digitalisierung im engeren technischen Sinne die Überführung von analogen Erscheinungsformen in digitale Daten – also elektronisch gespeicherte Zeichen, die in programmierbaren Computern maschinell verarbeitet werden können – beschreibt, werden die damit verbundenen Transformationsprozesse in ihrer gesellschaftlichen und (medien-)pädagogischen Bedeutung erst deutlich ,wenn man die Dimensionen der Vernetzung, der zunehmenden Generierung von Daten durch aktive (eigene) Produktion oder durch sensorische Systeme und die Algorithmisierung von Prozessen, insbesondere auch im Kontext selbstlernender Systeme, in den Blick nimmt. Orientierung wird hier nicht nur in Bezug auf die technologischen Entwicklungen zu einer zunehmenden Herausforderung, sondern auch mit Blick auf die dadurch einem dynamischen und fortlaufenden Wandel unterliegenden Medienwelten. Die stetig zunehmende Bedeutung der Digitalisierung für Individuum und Gesellschaft kann mit der Chiffre «permanent online, permanent verbunden» umsponnen werden. Mit mobilen Endgeräten – insbesondere Smartphones, die leistungsfähigen Computern in ihren Funktionalitäten in nichts nachstehen – sind wir heute zu jeder Zeit und an nahezu jedem Ort der Welt miteinander vernetzt und haben Zugriff auf eine enorme Menge von Medienangeboten. Gleichzeitig produzieren wir eine enorme Menge an Daten, die nicht nur funktionale Bedeutung haben, sondern insbesondere ökonomische und (gesellschafts-)politische. Auch das soziale Beziehungsgefüge, der Lebenswandel und Lebensstil verändern sich. Die damit verbundenen Möglichkeiten changieren zwischen Hoffnung und Sorge, Chance und Risiko, Mündigkeit und Unmündigkeit oder kurzum kann von einem durch ein einerseits-andererseits geprägten Spannungsfeld gesprochen werden. Von der Medienpädagogik darf zurecht erwartet werden, im Strom dieser hohen Dynamik und den oftmals enorm kurzen Innovationszyklen von Entwicklungen in mindestens zweierlei Hinsicht Orientierungen zu bieten: zum einen im Hinblick auf die für eine Orientierung in der digitalen Welt notwendigen oder angemessenen individuellen und kollektiven Bildungsressourcen; zum anderen im Hinblick auf die pädagogischen Zugänge und Massnahmen zur Ermöglichung von Orientierung sowie damit verbundene Forschungen. Gleichzeitig drängt sich die Frage auf, welchen Einfluss Medienpädagogik auf die Gestaltung von zukünftigen Entwicklungen nimmt oder nehmen kann. Können angesichts der Komplexität von (digitalen) Medien bzw. der damit verbundenen technologischen Strukturen, kulturellen Praxen, ökonomischen Bedingungen und gesellschaftlichen Implikationen solche Orientierungsleistungen – die sich auf eine im Grunde nur interdisziplinär beschreib- und verstehbare digitale Welt beziehen – überhaupt von einer Medienpädagogik als genuin erziehungswissenschaftliche Disziplin eigenständig erbracht werden? Welchen Beitrag kann Medienpädagogik in dieser interdisziplinären Gemengelage leisten? Und noch grundsätzlicher könnte danach gefragt werden, was Orientierung und Gestaltungsmöglichkeiten angesichts der Unbestimmtheit von Entwicklungen eigentlich bedeuten. Ausgehend von diesen Perspektiven und Erwägungen hat die Frühjahrstagung 2019 der Sektion Medienpädagogik folgende Fragen in den Mittelpunkt gestellt: Welche Rolle spielt die Medienpädagogik in interdisziplinären Kontexten von Mediatisierung und Digitalisierung? Welche Rolle nimmt die Medienpädagogik bei der Gestaltung von zukünftigen Entwicklungen ein? Welchen Beitrag kann die Medienpädagogik in innovativen Feldern, wie z.B. VR/AR oder KI leisten? Welche Orientierungsleistungen in Erziehung und Bildung können von der Medienpädagogik erwartet werden? }}, author = {{Herzig, Bardo and Klar, Tilman-Mathies and Martin, Alexander and Meister, Dorothee M.}}, issn = {{1424-3636}}, journal = {{Orientierungen in der digitalen Welt}}, pages = {{i--vii}}, title = {{{Editorial: Orientierungen in der digitalen Welt}}}, doi = {{10.21240/mpaed/39/2020.12.12.x}}, year = {{2020}}, } @techreport{20712, author = {{Schubert, Philipp and Bodden, Eric and Hermann, Ben}}, title = {{{Accelerating Static Call-Graph, Points-to and Data-Flow Analysis Through Persisted Summaries}}}, year = {{2020}}, } @inproceedings{20723, author = {{Ivanjko, Martin and Meschut, Gerson}}, booktitle = {{10. Fügetechnisches Gemeinschaftskolloquium}}, title = {{{Einsatzgrenzenerweiterung und Flexibilitätssteigerung von einseitig wirkenden mechanischen Fügeverfahren durch prozessintegrierte Fügeteilerwärmung für den stahlintensiven Leichtbau}}}, year = {{2020}}, } @unpublished{20748, abstract = {{On the circuit level, the design paradigm Approximate Computing seeks to trade off computational accuracy against a target metric, e.g., energy consumption. This trade-off is possible for many applications due to their inherent resiliency against inaccuracies. In the past, several automated approximation frameworks have been presented, which either utilize designated approximation techniques or libraries to replace approximable circuit parts with inaccurate versions. The frameworks invoke a search algorithm to iteratively explore the search space of performance degraded circuits, and validate their quality individually. In this paper, we propose to reverse this procedure. Rather than exploring the search space, we delineate the approximate parts of the search space which are guaranteed to lead to valid approximate circuits. Our methodology is supported by formal verification and independent of approximation techniques. Eventually, the user is provided with quality bounds of the individual approximable circuit parts. Consequently, our approach guarantees that any approximate circuit which implements these parts within the determined quality constraints satisfies the global quality constraints, superseding a subsequent quality verification. In our experimental results, we present the runtimes of our approach.}}, author = {{Witschen, Linus Matthias and Wiersema, Tobias and Platzner, Marco}}, booktitle = {{Fifth Workshop on Approximate Computing (AxC 2020)}}, pages = {{2}}, title = {{{Search Space Characterization for AxC Synthesis}}}, year = {{2020}}, } @inproceedings{20750, author = {{Lienen, Christian and Platzner, Marco and Rinner, Bernhard}}, booktitle = {{Proceedings of the 2020 International Conference on Field-Programmable Technology (FPT)}}, title = {{{ReconROS: Flexible Hardware Acceleration for ROS2 Applications}}}, year = {{2020}}, } @inproceedings{20755, abstract = {{We consider the problem of computing shortest paths in \emph{hybrid networks}, in which nodes can make use of different communication modes. For example, mobile phones may use ad-hoc connections via Bluetooth or Wi-Fi in addition to the cellular network to solve tasks more efficiently. Like in this case, the different communication modes may differ considerably in range, bandwidth, and flexibility. We build upon the model of Augustine et al. [SODA '20], which captures these differences by a \emph{local} and a \emph{global} mode. Specifically, the local edges model a fixed communication network in which $O(1)$ messages of size $O(\log n)$ can be sent over every edge in each synchronous round. The global edges form a clique, but nodes are only allowed to send and receive a total of at most $O(\log n)$ messages over global edges, which restricts the nodes to use these edges only very sparsely. We demonstrate the power of hybrid networks by presenting algorithms to compute Single-Source Shortest Paths and the diameter very efficiently in \emph{sparse graphs}. Specifically, we present exact $O(\log n)$ time algorithms for cactus graphs (i.e., graphs in which each edge is contained in at most one cycle), and $3$-approximations for graphs that have at most $n + O(n^{1/3})$ edges and arboricity $O(\log n)$. For these graph classes, our algorithms provide exponentially faster solutions than the best known algorithms for general graphs in this model. Beyond shortest paths, we also provide a variety of useful tools and techniques for hybrid networks, which may be of independent interest. }}, author = {{Feldmann, Michael and Hinnenthal, Kristian and Scheideler, Christian}}, booktitle = {{Proceedings of the 24th International Conference on Principles of Distributed Systems (OPODIS)}}, publisher = {{Schloss Dagstuhl - Leibniz-Zentrum für Informatik}}, title = {{{Fast Hybrid Network Algorithms for Shortest Paths in Sparse Graphs}}}, doi = {{10.4230/LIPIcs.OPODIS.2020.31}}, year = {{2020}}, } @inproceedings{20812, author = {{Jean, Frederic and Maslovskaya, Sofya}}, booktitle = {{2019 IEEE 58th Conference on Decision and Control (CDC)}}, isbn = {{9781728113982}}, title = {{{Injectivity of the inverse optimal control problem for control-affine systems}}}, doi = {{10.1109/cdc40024.2019.9028877}}, year = {{2020}}, } @misc{20820, author = {{Thiele, Simon}}, title = {{{Implementing Machine Learning Functions as PYNQ FPGA Overlays}}}, year = {{2020}}, } @misc{20821, author = {{Jaganath, Vivek}}, title = {{{Extension and Evaluation of Python-based High-Level Synthesis Tool Flows}}}, year = {{2020}}, } @article{20834, author = {{Webb, Mary E and Fluck, Andrew and Magenheim, Johannes and Malyn-Smith, Joyce and Waters, Juliet and Deschênes , Michelle and Zagami, Jason}}, journal = {{Educational Technology Research and Development}}, pages = {{1--22}}, publisher = {{Springer}}, title = {{{Machine learning for human learners: opportunities, issues, tensions and threats}}}, doi = {{10.1007/s11423-020-09858-2}}, year = {{2020}}, } @article{20835, author = {{Magenheim, Johannes}}, journal = {{MedienPädagogik: Zeitschrift für Theorie und Praxis der Medienbildung}}, pages = {{139--163}}, title = {{{< Big Data> aus der Perspektive von Informatischer Bildung und Medienpädagogik}}}, doi = {{10.21240/mpaed/37/2020.07.08.X}}, volume = {{37}}, year = {{2020}}, } @article{20836, author = {{Magenheim, Johannes and Schulte, Carsten}}, journal = {{Encyclopedia of Education and Information Technologies. Cham: Springer}}, title = {{{Data science education}}}, doi = {{10.1007/978-3-030-10576-1_253}}, year = {{2020}}, } @inbook{20840, author = {{Schulte, Carsten and Budde, Lea and Winkelnkemper, Felix}}, booktitle = {{Mobile Medien im Schulkontext}}, pages = {{215--240}}, publisher = {{Springer}}, title = {{{Programmieren - Lehren und Lernen mit und über Medien}}}, doi = {{10.1007/978-3-658-29039-9}}, year = {{2020}}, } @inproceedings{20843, author = {{Wu, Tao and Tinkloh, Steffen Rainer and Tröster, Thomas and Zinn, Wolfgang}}, booktitle = {{Proceedings of the 4th International Conference Hybrid 2020 Materials and Structures}}, location = {{Web-Conference, Germany}}, title = {{{Residual stress measurement in GFRP/steel hybrid components}}}, year = {{2020}}, } @inbook{20847, author = {{Zentgraf, Thomas and Chen, Shumei and Li, Guixin and Zhang, Shuang}}, booktitle = {{Nanoantennas and Plasmonics: Modelling, design and fabrication}}, editor = {{Werner, Douglas H. and Campbell, Sawyer D. and Kang, Lei}}, publisher = {{The Institution of Engineering and Technology}}, title = {{{Plasmonic metasurfaces for controlling harmonic generations}}}, doi = {{10.1049/SBEW540E_ch8}}, year = {{2020}}, } @article{20848, author = {{Tischendorf, R. and Simmler, M. and Weinberger, C. and Bieber, M. and Reddemann, M. and Fröde, F. and Lindner, J. and Pitsch, H. and Kneer, R. and Tiemann, M. and Nirschl, H. and Schmid, H.-J.}}, issn = {{0021-8502}}, journal = {{Journal of Aerosol Science}}, title = {{{Examination of the evolution of iron oxide nanoparticles in flame spray pyrolysis by tailored in situ particle sampling techniques}}}, doi = {{10.1016/j.jaerosci.2020.105722}}, year = {{2020}}, } @inproceedings{20852, author = {{Unruh, Eduard and Hein, David and Meschut, Gerson}}, booktitle = {{10. Fügetechnisches Gemeinschaftskolloquium}}, title = {{{Analytische Auslegung der Schwingfestigkeit geclinchter Verbindungen}}}, year = {{2020}}, } @inproceedings{20853, author = {{Bähr, Philipp and Sommer, Silke and Unruh, Eduard and Hein, David and Meschut, Gerson}}, title = {{{Charakterisierung und Modellierung von Kerbeffekten durch Mischverbindungen in Karosseriebauteilen aus höchstfesten Stählen}}}, year = {{2020}}, } @inproceedings{20854, author = {{Camberg, Alan Adam and Tröster, Thomas}}, location = {{Seoul, South Korea}}, title = {{{A simplified method for the evaluation of the layer compression test using one 3D digital image correlation system and considering the material anisotropy by the equibiaxial Lankford parameter}}}, doi = {{10.1088/1757-899X/967/1/012077}}, year = {{2020}}, } @inproceedings{20856, author = {{Camberg, Alan Adam and Erhart, Tobias and Tröster, Thomas}}, location = {{Seoul, South Korea}}, title = {{{Predicting fracture at non-isothermal forming conditions: A temperature dependent extension of the LS-DYNA GISSMO fracture indicator framework}}}, doi = {{10.13140/RG.2.2.23924.17288}}, year = {{2020}}, } @inbook{20860, author = {{Strauß, Sara and Schäfer-Althaus, Sarah}}, booktitle = {{Transient Bodies in Anglophone Literature and Culture}}, editor = {{Strauß, Sara and Schäfer-Althaus, Sarah }}, isbn = {{9783825346638}}, pages = {{7--22}}, publisher = {{Winter}}, title = {{{Transient Bodies, Bodies in Transition: An Introduction}}}, year = {{2020}}, } @inbook{20861, author = {{Strauß, Sara}}, booktitle = {{Transient Bodies in Anglophone Literature and Culture}}, editor = {{Strauß, Sara and Schäfer-Althaus, Sarah}}, isbn = {{9783825346638}}, pages = {{205--226}}, publisher = {{Winter}}, title = {{{Ageing (Female) Bodies and Mortality in Eighteenth-Century Poetry}}}, year = {{2020}}, } @article{20862, author = {{Strauß, Sara}}, issn = {{0944-9094}}, journal = {{Journal for the Study of British Cultures}}, number = {{1}}, pages = {{63--76}}, title = {{{Visualising Memory Loss and the Politics of Representation in Contemporary Portraiture}}}, volume = {{27}}, year = {{2020}}, } @article{20866, author = {{Sievers, Sönke and Degen, Dominik and Kim, Daniel and Kengelbach, Jens}}, journal = {{M&A Review Europe }}, title = {{{How Private Equity can leverage downturn M&A for value creation}}}, year = {{2020}}, } @techreport{20871, abstract = {{How is merger and acquisition (M&A) success associated with firm internal M&A process organization? The literature thus far acknowledges that unobservable internal firm characteristics are at least as important as observable firm- and deal-specific characteristics in regard to explaining M&A success. Thus, this paper directly asks M&A experts around the globe to shed more light on this important issue. We investigate three indices, capturing the degree of M&A 1) process standardization, 2) process duration, and 3) process attention. Next, we analyze the process participation among four organizational layers, i.e., the functional involvement of the a) top management team, b) headquarters, c) business unit management, and d) business unit functions. We predict and find that all three indices are positively associated with M&A success, while process standardization and attention to deal strategy are of particular importance. Turning to the four organizational layers, a textured analysis shows that, for instance, target valuation should be performed by the headquarters functions but not by the top management team or the business unit. Overall, our findings are important to better understand unexplored M&A success drivers and provide directions for future research. Finally, our results might help practitioners adjust their M&A process organization to further improve their M&A success.}}, author = {{Sievers, Sönke and Alexander, Schmitz}}, keywords = {{Mergers, Acquisitions, Success, Processes, Organization}}, pages = {{73}}, title = {{{What matters for organizing M&As successfully?}}}, doi = {{10.2139/ssrn.3679155}}, year = {{2020}}, } @techreport{20873, author = {{Sievers, Sönke and Keienburg, Georg and Degen, Dominik and Söllner, Tobias and Kashyrkin, Anton}}, publisher = {{The Boston Consulting Group, Inc., M&A Report}}, title = {{{Alternative Deals Gain Traction}}}, year = {{2020}}, } @article{20874, author = {{Sievers, Sönke and Degen, Dominik and Kim, Daniel and Kengelbach, Jens}}, journal = {{M&A Review}}, pages = {{266--271}}, title = {{{Downturn M&A: Die Erfolgsstrategie der Stunde?}}}, year = {{2020}}, } @article{20882, author = {{Hoffmann, Christin and Thommes, Kirsten}}, issn = {{0167-2681}}, journal = {{Journal of Economic Behavior & Organization}}, pages = {{49--65}}, title = {{{Can digital feedback increase employee performance and energy efficiency in firms? Evidence from a field experiment}}}, doi = {{10.1016/j.jebo.2020.09.034}}, year = {{2020}}, } @article{20883, abstract = {{We experimentally compare the consequences for group cooperation of two decision mechanisms involving the extension of group membership. We analyze an exogenous decision (random draw) and an endogenous decision (made by a particular group member) mechanism to extend a temporary agent’s group membership. Our results reveal that the prospect of group membership extension affects not only the temporary but also the permanent group members’ contributions with an endogenous mechanism.}}, author = {{Grund, Christian and Harbring, Christine and Thommes, Kirsten and Tilkes, Katja Rebecca}}, issn = {{2073-4336}}, journal = {{Games}}, title = {{{Decisions on Extending Group Membership—Evidence from a Public Good Experiment}}}, doi = {{10.3390/g11040061}}, year = {{2020}}, } @article{20888, author = {{Blömer, Johannes and Brauer, Sascha and Bujna, Kathrin}}, issn = {{1549-6325}}, journal = {{ACM Transactions on Algorithms}}, number = {{4}}, pages = {{1--25}}, title = {{{A Complexity Theoretical Study of Fuzzy K-Means}}}, doi = {{10.1145/3409385}}, volume = {{16}}, year = {{2020}}, } @inbook{20891, abstract = {{Today, software systems are rarely developed monolithically, but may be composed of numerous individually developed features. Their modularization facilitates independent development and verification. While feature-based strategies to verify features in isolation have existed for years, they cannot address interactions between features. The problem with feature interactions is that they are typically unknown and may involve any subset of the features. Contrary, a family-based verification strategy captures feature interactions, but does not scale well when features evolve frequently. To the best of our knowledge, there currently exists no approach with focus on evolving features that combines both strategies and aims at eliminating their respective drawbacks. To fill this gap, we introduce Fefalution, a feature-family-based verification approach based on abstract contracts to verify evolving features and their interactions. Fefalution builds partial proofs for each evolving feature and then reuses the resulting partial proofs in verifying feature interactions, yielding a full verification of the complete software system. Moreover, to investigate whether a combination of both strategies is fruitful, we present the first empirical study for the verification of evolving features implemented by means of feature-oriented programming and by comparing Fefalution with another five family-based approaches varying in a set of optimizations. Our results indicate that partial proofs based on abstract contracts exhibit huge reuse potential, but also come with a substantial overhead for smaller evolution scenarios. }}, author = {{Knüppel, Alexander and Krüger, Stefan and Thüm, Thomas and Bubel, Richard and Krieter, Sebastian and Bodden, Eric and Schaefer, Ina}}, booktitle = {{Lecture Notes in Computer Science}}, isbn = {{9783030643539}}, issn = {{0302-9743}}, title = {{{Using Abstract Contracts for Verifying Evolving Features and Their Interactions}}}, doi = {{10.1007/978-3-030-64354-6_5}}, year = {{2020}}, } @article{20892, author = {{Bürger, Julius and Riedl, Thomas and Lindner, Jörg K.N.}}, issn = {{0304-3991}}, journal = {{Ultramicroscopy}}, title = {{{Influence of lens aberrations, specimen thickness and tilt on differential phase contrast STEM images}}}, doi = {{10.1016/j.ultramic.2020.113118}}, year = {{2020}}, } @article{20893, abstract = {{Block copolymer (BCP) self-assembly is a promising tool for next generation lithography as microphase separated polymer domains in thin films can act as templates for surface nanopatterning with sub-20 nm features. The replicated patterns can, however, only be as precise as their templates. Thus, the investigation of the morphology of polymer domains is of great importance. Commonly used analytical techniques (neutron scattering, scanning force microscopy) either lack spatial information or nanoscale resolution. Using advanced analytical (scanning) transmission electron microscopy ((S)TEM), we provide real space information on polymer domain morphology and interfaces between polystyrene (PS) and polymethylmethacrylate (PMMA) in cylinder- and lamellae-forming BCPs at highest resolution. This allows us to correlate the internal structure of polymer domains with line edge roughnesses, interface widths and domain sizes. STEM is employed for high-resolution imaging, electron energy loss spectroscopy and energy filtered TEM (EFTEM) spectroscopic imaging for material identification and EFTEM thickness mapping for visualisation of material densities at defects. The volume fraction of non-phase separated polymer species can be analysed by EFTEM. These methods give new insights into the morphology of polymer domains the exact knowledge of which will allow to improve pattern quality for nanolithography.}}, author = {{Bürger, Julius and Kunnathully, Vinay S. and Kool, Daniel and Lindner, Jörg K. N. and Brassat, Katharina}}, issn = {{2079-4991}}, journal = {{Nanomaterials}}, title = {{{Characterisation of the PS-PMMA Interfaces in Microphase Separated Block Copolymer Thin Films by Analytical (S)TEM}}}, doi = {{10.3390/nano10010141}}, year = {{2020}}, } @article{17995, author = {{Riha, Christian and Buchholz, Sven S. and Chiatti, Olivio and Wieck, Andreas D. and Reuter, Dirk and Fischer, Saskia F.}}, issn = {{0003-6951}}, journal = {{Applied Physics Letters}}, title = {{{Excess noise in Al x Ga 1 − xAs/GaAs based quantum rings}}}, doi = {{10.1063/5.0002247}}, year = {{2020}}, } @inbook{18014, author = {{El Mesaoudi-Paul, Adil and Weiß, Dimitri and Bengs, Viktor and Hüllermeier, Eyke and Tierney, Kevin}}, booktitle = {{Learning and Intelligent Optimization. LION 2020.}}, isbn = {{9783030535513}}, issn = {{0302-9743}}, pages = {{216 -- 232}}, publisher = {{Springer}}, title = {{{Pool-Based Realtime Algorithm Configuration: A Preselection Bandit Approach}}}, doi = {{10.1007/978-3-030-53552-0_22}}, volume = {{12096}}, year = {{2020}}, } @unpublished{18017, abstract = {{We consider an extension of the contextual multi-armed bandit problem, in which, instead of selecting a single alternative (arm), a learner is supposed to make a preselection in the form of a subset of alternatives. More specifically, in each iteration, the learner is presented a set of arms and a context, both described in terms of feature vectors. The task of the learner is to preselect $k$ of these arms, among which a final choice is made in a second step. In our setup, we assume that each arm has a latent (context-dependent) utility, and that feedback on a preselection is produced according to a Plackett-Luce model. We propose the CPPL algorithm, which is inspired by the well-known UCB algorithm, and evaluate this algorithm on synthetic and real data. In particular, we consider an online algorithm selection scenario, which served as a main motivation of our problem setting. Here, an instance (which defines the context) from a certain problem class (such as SAT) can be solved by different algorithms (the arms), but only $k$ of these algorithms can actually be run.}}, author = {{El Mesaoudi-Paul, Adil and Bengs, Viktor and Hüllermeier, Eyke}}, booktitle = {{arXiv:2002.04275}}, title = {{{Online Preselection with Context Information under the Plackett-Luce Model}}}, year = {{2020}}, } @inbook{18020, author = {{Graf-Schlattmann, Marcel and Meister, Dorothee M. and Oevel, Gudrun and Wilde, Melanie}}, booktitle = {{Zeitschrift für Hochschulentwicklung}}, pages = {{19 -- 39}}, title = {{{Kollektive Veränderungsbereitschaft als zentraler Erfolgsfaktor von Digitalisierungsprozessen an Hochschulen}}}, year = {{2020}}, } @inproceedings{18021, author = {{Yigitbas, Enes and Tejedor, Christopher Bernal and Engels, Gregor}}, booktitle = {{Proceedings of the Mensch und Computer 2020 (MuC ’20)}}, title = {{{Experiencing and Programming the ENIAC in VR}}}, year = {{2020}}, } @inproceedings{18022, author = {{Augstein, Mirjam and Buschek, Daniel and Herder, Eelco and Loepp, Benedikt and Yigitbas, Enes and Ziegler, Jürgen}}, booktitle = {{Proceedings of the Mensch und Computer 2020 (MuC ’20)}}, publisher = {{ACM}}, title = {{{UCAI 2020 - 1st International Workshop on User-Centered Artificial Intelligence}}}, year = {{2020}}, } @inproceedings{18038, author = {{Böttcher, Stefan and Hartel, Rita and Peeters, Sven}}, booktitle = {{Proceedings of The International Workshop on Semantic Big Data}}, isbn = {{9781450379748}}, title = {{{QSGG: query simulation in grammar-compressed graphs}}}, doi = {{10.1145/3391274.3393638}}, year = {{2020}}, } @inproceedings{18039, author = {{Böttcher, Stefan and Hartel, Rita and Peeters, Sven}}, booktitle = {{2020 Data Compression Conference (DCC) (Poster)}}, isbn = {{9781728164571}}, title = {{{Pattern Search in Grammar-Compressed Graphs}}}, doi = {{10.1109/dcc47342.2020.00054}}, year = {{2020}}, } @misc{18066, author = {{Skowronek, Michael}}, publisher = {{Universität Paderborn}}, title = {{{Approaches for Competetive Routing through Intersections of Hole Abstractions in Hybrid Communication Networks}}}, year = {{2020}}, } @misc{18085, author = {{Heimann, Jonas}}, title = {{{Distributed Key Generation for Attribute-Based Signatures}}}, year = {{2020}}, } @inproceedings{18109, author = {{Yigitbas, Enes and Jovanovikj, Ivan and Scholand, Janis and Engels, Gregor}}, booktitle = {{Proceedings of the 26th ACM Symposium on Virtual Reality Software and Technology (VRST)}}, publisher = {{ACM}}, title = {{{VR Training for Warehouse Management }}}, year = {{2020}}, } @book{18142, author = {{Büker, Petra and Höke, Julia}}, publisher = {{Kohlhammer}}, title = {{{Bildungsdokumentation in KiTa und Grundschule stärkenorientiert gestalten}}}, volume = {{7}}, year = {{2020}}, } @inproceedings{18249, abstract = {{Augmented Reality (AR) has recently found high attention in mobile shopping apps such as in domains like furniture or decoration. Here, the developers of the apps focus on the positioning of atomic 3D objects in the physical environment. With this focus, they neglect the configuration of multi-faceted 3D object composition according to the user needs and environmental constraints. To tackle these challenges, we present a model-based approach to support AR-assisted product con-figuration based on the concept of Dynamic Software Product Lines. Our approach splits products (e.g. table) into parts (e.g. tabletop, ta-ble legs, funnier) with their 3D objects and additional information (e.g. name, price). The possible products, which can be configured out of these parts, are stored in a feature model. At runtime, this feature model can be used to configure 3D object compositions out of the product parts and adapt to user needs and environmental constraints. The benefits of this approach are demonstrated by a case study of configuring modular kitchens with the help of a prototypical mobile-based implementation.}}, author = {{Gottschalk, Sebastian and Yigitbas, Enes and Schmidt, Eugen and Engels, Gregor}}, booktitle = {{Human-Centered Software Engineering. HCSE 2020}}, editor = {{Bernhaupt, Regina and Ardito, Carmelo and Sauer, Stefan}}, keywords = {{Product Configuration, Augmented Reality, Runtime Adaptation, Dynamic Software Product Lines}}, location = {{Eindhoven}}, publisher = {{Springer}}, title = {{{Model-based Product Configuration in Augmented Reality Applications}}}, doi = {{10.1007/978-3-030-64266-2_5}}, volume = {{12481}}, year = {{2020}}, } @inproceedings{18276, abstract = {{Algorithm selection (AS) deals with the automatic selection of an algorithm from a fixed set of candidate algorithms most suitable for a specific instance of an algorithmic problem class, where "suitability" often refers to an algorithm's runtime. Due to possibly extremely long runtimes of candidate algorithms, training data for algorithm selection models is usually generated under time constraints in the sense that not all algorithms are run to completion on all instances. Thus, training data usually comprises censored information, as the true runtime of algorithms timed out remains unknown. However, many standard AS approaches are not able to handle such information in a proper way. On the other side, survival analysis (SA) naturally supports censored data and offers appropriate ways to use such data for learning distributional models of algorithm runtime, as we demonstrate in this work. We leverage such models as a basis of a sophisticated decision-theoretic approach to algorithm selection, which we dub Run2Survive. Moreover, taking advantage of a framework of this kind, we advocate a risk-averse approach to algorithm selection, in which the avoidance of a timeout is given high priority. In an extensive experimental study with the standard benchmark ASlib, our approach is shown to be highly competitive and in many cases even superior to state-of-the-art AS approaches.}}, author = {{Tornede, Alexander and Wever, Marcel Dominik and Werner, Stefan and Mohr, Felix and Hüllermeier, Eyke}}, booktitle = {{ACML 2020}}, location = {{Bangkok, Thailand}}, title = {{{Run2Survive: A Decision-theoretic Approach to Algorithm Selection based on Survival Analysis}}}, year = {{2020}}, } @article{18350, author = {{Koldewey, Christian and Meyer, Maurice and Stockbrügger, Patrick and Dumitrescu, Roman and Gausemeier, Jürgen}}, issn = {{2212-8271}}, journal = {{Procedia CIRP}}, number = {{91}}, pages = {{851--857}}, title = {{{Framework and Functionality Patterns for Smart Service Innovation}}}, doi = {{10.1016/j.procir.2020.02.244}}, year = {{2020}}, } @phdthesis{18520, author = {{Setzer, Alexander}}, publisher = {{Universität Paderborn}}, title = {{{Local Graph Transformation Primitives For Some Basic Problems In Overlay Networks}}}, doi = {{10.17619/UNIPB/1-1026}}, year = {{2020}}, } @article{18534, author = {{Vukadinovic, Yannik and Burkhardt, Lukas and Päpcke, Ayla and Miletic, Anabel and Fritsch, Lorena and Altenburger, Björn and Schoch, Roland and Neuba, Adam and Lochbrunner, Stefan and Bauer, Matthias}}, issn = {{0020-1669}}, journal = {{Inorganic Chemistry}}, pages = {{8762--8774}}, title = {{{When Donors Turn into Acceptors: Ground and Excited State Properties of FeII Complexes with Amine-Substituted Tridentate Bis-imidazole-2-ylidene Pyridine Ligands}}}, doi = {{10.1021/acs.inorgchem.0c00393}}, year = {{2020}}, } @misc{18637, author = {{Schürmann, Patrick}}, publisher = {{Universität Paderborn}}, title = {{{A Group Signature Scheme from Flexible Public Key Signatures and Structure-Preserving Signatures on Equivalence Classes}}}, year = {{2020}}, } @misc{18639, author = {{Terfort, Tobias}}, publisher = {{Universität Paderborn}}, title = {{{Enhancing Security by Usage of Universal One-Way Hash Functions}}}, year = {{2020}}, } @misc{18648, author = {{Guggenmos, Andreas}}, publisher = {{Universität Paderborn}}, title = {{{Algorithmen für selbststabilisierende Skip+-Delaunaygraphen}}}, year = {{2020}}, } @inproceedings{22138, author = {{Brüggemann, J.P. and Risse, L. and Woodcock, S.C. and Joy, T.D. and Neumann, J. and Vidner , J. and Kullmer, G. and Richard, H.A.}}, booktitle = {{DVM-Bericht 252, Arbeitskreis: Bruchmechanische Werkstoff- und Bauteilbewertung: Beanspruchungsanalyse, Prüfmethoden und Anwendungen, Deutscher Verband für Materialforschung und -prüfung e.V.}}, title = {{{Strukturoptimierung einer Messradkomponente zur realitätsnäheren Erfassung von Fahrzeuglastdaten und Bruchmechanische Bewertung}}}, volume = {{252}}, year = {{2020}}, } @inproceedings{22142, author = {{Brüggemann, J.P. and Risse, L. and Woodcock, S.C. and Kullmer, G. and Richard, H.A.}}, booktitle = {{DVM-Bericht 405, Arbeitskreis: Additiv gefertigte Bauteile und Strukturen, Deutscher Verband für Materialforschung und -prüfung e.V.}}, title = {{{Einsatz von Topologieoptimierungssoftware - Der Ersatz für den Ingenieur?}}}, volume = {{405}}, year = {{2020}}, } @inproceedings{22143, author = {{Risse, L. and Kullmer, G.}}, booktitle = {{DVM-Bericht 405, Arbeitskreis: Additiv gefertigte Bauteile und Strukturen, Deutscher Verband für Materialforschung und -prüfung e.V.}}, title = {{{Implementierung additiver Fertigungsverfahren in den chirurgischen Arbeitsablauf}}}, volume = {{405}}, year = {{2020}}, } @techreport{22161, author = {{Kundisch, Dennis}}, pages = {{1}}, title = {{{Digitale mehrseitige Plattformen – Besser verstehen, wie digitale Plattformen funktionieren}}}, volume = {{3}}, year = {{2020}}, } @inproceedings{22182, author = {{Kummert, Christina and Diekmann, Wolfgang and Tews, Katrin and Schmid, Hans-Joachim}}, booktitle = {{29th Annual International Solid Freeform Fabrication Symposium}}, pages = {{735--744}}, title = {{{Influence of Part Microstructure on Mechanicl Properties of PA6X Laser Sintered Specimens}}}, doi = {{http://utw10945.utweb.utexas.edu/sites/default/files/2019/063%20Influence%20of%20Part%20Microstructure%20on%20Mechanical%20Pro.pdf}}, volume = {{29}}, year = {{2020}}, } @techreport{22207, author = {{Kundisch, Dennis}}, pages = {{48}}, title = {{{Das Technologiedesign umfassend und strukturiert anpassen}}}, volume = {{2}}, year = {{2020}}, } @techreport{22208, author = {{Kundisch, Dennis}}, pages = {{15}}, title = {{{Förderung von Kompetenzen im Bereich Wirtschat 4.0 an Fachschulen}}}, volume = {{1}}, year = {{2020}}, } @article{22290, author = {{Salten, Alexander Heinrich Johannes and Maćkowiak, Jan F. and Maćkowiak, Jerzy K. and Kenig, Eugeny}}, issn = {{0009-2509}}, journal = {{Chemical Engineering Science}}, title = {{{A new hydrodynamic analogy model for the determination of transport phenomena in random packings}}}, doi = {{10.1016/j.ces.2020.116246}}, volume = {{233}}, year = {{2020}}, } @inproceedings{22293, author = {{Salten, Alexander Heinrich Johannes and Ehlert, Thomas and Maćkowiak, J. F. and Maćkowiak, J. and Kenig, Eugeny}}, keywords = {{PubList}}, publisher = {{Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption und Extraktion}}, title = {{{Einfluss der Füllkörpergeometrie und Strömungsformen auf die Trennleistung von Absorptionskolonnen}}}, year = {{2020}}, } @inproceedings{22294, author = {{Maćkowiak, J. F. and Maćkowiak, J. and Salten, Alexander Heinrich Johannes and Kenig, Eugeny}}, keywords = {{PubList}}, location = {{Web-Konferenz}}, publisher = {{10. ProcessNet-Jahrestagung und 34. DECHEMA-Jahrestagung der Biotechnologen}}, title = {{{Entwicklung eines Gitterfüllkörpers ENVIPAC 4 unterstützt durch prädiktive Modellierung}}}, year = {{2020}}, } @inproceedings{22458, author = {{Bothe, Mike and Fedorov, Alexander and Frei, Herrmann and Lutters, Nicole and Kenig, Eugeny}}, location = {{Berchtesgaden}}, publisher = {{Jahrestreffen der ProcessNet-Fachgruppen Fluidverfahrenstechnik, Adsorption und Extraktion}}, title = {{{Entwicklung modellbasierter Werkzeuge zur Vermeidung von Notfallsituationen bei der chemischen Absorption}}}, year = {{2020}}, } @article{22464, author = {{Wende, Marc and Philippi, K. and Kenig, Eugeny}}, issn = {{0009-286X}}, journal = {{Chemie Ingenieur Technik}}, number = {{9}}, pages = {{1297--1298}}, title = {{{Numerische Simulation von Gravidestillationsapparaten zur Trennung eines binären Ethanol/Wasser‐Gemisches}}}, doi = {{10.1002/cite.202055148}}, volume = {{92}}, year = {{2020}}, } @book{22465, editor = {{Meister, Dorothee M. and Mindt, Ilka}}, isbn = {{9783658290382}}, issn = {{2512-112X}}, title = {{{Mobile Medien im Schulkontext}}}, doi = {{10.1007/978-3-658-29039-9}}, year = {{2020}}, } @inbook{22466, author = {{Meister, Dorothee and Mindt, Ilka}}, booktitle = {{Mobile Medien im Schulkontext}}, isbn = {{978-3-658-29038-2}}, pages = {{1--6}}, publisher = {{Springer VS}}, title = {{{Einleitung}}}, doi = {{10.1007/978-3-658-29039-9}}, volume = {{41}}, year = {{2020}}, } @inbook{22467, author = {{Mindt, Ilka and Kaymak, Yasemin}}, booktitle = {{Mobile Medien im Schulkontext}}, editor = {{Meister, Dorothee and Mindt, Ilka}}, isbn = {{978-3-658-29038-2}}, pages = {{155--174}}, publisher = {{Springer VS}}, title = {{{Digitale Elemente im Englischunterricht}}}, doi = {{https://doi.org/10.1007/978-3-658-29039-9_8}}, volume = {{41}}, year = {{2020}}, } @inbook{22470, author = {{Schmidt, Rebekka and Dietrich, Nico and Mindt, Ilka}}, booktitle = {{Digitale Innovationen und Kompetenzen in der Lehramtsausbildung}}, editor = {{Beißwenger, Michael}}, title = {{{Viele Wege führen nach Rom - Möglichkeiten und Modelle des Inverted-Classroom-Modells aus interdisziplinärer Sicht}}}, doi = {{10.17185/duepublico/73330}}, year = {{2020}}, } @inbook{22472, author = {{Mindt, Ilka and Schmidt, Rebekka and Beißwenger, Michael and Dietrich, Nico}}, booktitle = {{Digitale Innovationen und Kompetenzen in der Lehramtsausbildung}}, editor = {{Beißwenger, Michael and Bulizek, Björn and Gryl, Inga and Schacht, Florian}}, pages = {{165--207}}, publisher = {{Universitätsverlag Rhein-Ruhr}}, title = {{{Mit digitalen Arbeitsformen das Lernen bereichern: zur Gestaltung sinnstiftender Präsenzphasen mit dem Inverted-Classroom-Modell}}}, doi = {{10.17185/duepublico/73330}}, year = {{2020}}, } @inbook{22473, author = {{Mindt, Ilka and Schmidt, Rebekka}}, booktitle = {{Tagungsband zur Tagung Inverted Classroom and beyond 2020}}, editor = {{Brandhofer, G. and Buchner, J. and Freisleben-Teutscher, C. and Tengler, K.}}, pages = {{1--16}}, publisher = {{BoD}}, title = {{{Student engagement im Inverted Classrom}}}, year = {{2020}}, } @misc{22477, author = {{Mindt, Ilka}}, number = {{3}}, pages = {{247--248}}, title = {{{Kristin Bech and Ruth Möhlig-Falke, eds. Grammar – Discourse – Context: Grammar and Usage in Language Variation and Change. Berlin and Boston, MA: De Gruyter, 2019}}}, doi = {{https://doi.org/10.33675/ANGL/2020/3/18}}, volume = {{31}}, year = {{2020}}, } @phdthesis{22493, abstract = {{Federkraftbremsen für industrielle Anwendungen tragen häufig zur Erfüllung einer Sicherheitsfunktion bei. Um Sicherheitsfunktionen zu validieren, sind Sicherheitskennzahlen einzelner Elemente erforderlich. Für Federkraftbremsen werden diese bis dato nur vereinzelt zur Verfügung gestellt. Weiterhin existiert kein Konsens über deren Ermittlung. In dieser Arbeit wird ein bauteilorientierter Ansatz zur Ermittlung von Sicherheitskennzahlen für Federkraftbremsen diskutiert. Unter Berücksichtigung relevanter rechtlich-normativer Rahmenbedingungen wird eine qualitative Zuverlässigkeitsanalyse durchgeführt. Es folgt die simulative und experimentelle Untersuchung einer konkreten Bauteilschadensart. Abschließend wird ein Zuverlässigkeitsblockdiagramm auf Grundlage gewonnener Erkenntnisse hergeleitet.}}, author = {{Hübner, Christoph}}, isbn = {{978-3-8440-7889-3}}, keywords = {{Federkraftbremsen, Funktionale Sicherheit, Technische Zuverlässigkeit, Verschleiß}}, publisher = {{Shaker Verlag GmbH}}, title = {{{Beitrag zur Bewertung der funktionalen Sicherheit von Federkraftbremsen}}}, year = {{2020}}, } @phdthesis{22501, abstract = {{Elektromechanische Spindelhubantriebe werden in einer Vielzahl von unterschiedlichen Anwendungen mit jeweils spezifischen Prozesskennwerten eingesetzt. Dabei kann es vorkommen, dass das dynamische Betriebsverhalten eines Spindelhubantriebs unerwünschte Schwingungen aufweist. Um unerwünschte Betriebszustände bereits vor dem realen Anwendungsfall ersichtlich zu machen, wird im Rahmen dieser Arbeit ein Simulationsmodell von Spindelhubantrieben mit Trapezgewindespindel entwickelt. Dazu wird zunächst recherchiert, welche Schwingungsphänomene in einem Spindelhubantrieb entstehen können. Die Modellbildung wird durch eine Verifikation anhand der identifizierten Schwingphänomene begleitet. Im Anschluss erfolgt eine Validierung des Simulationsmodells durch experimentelle Messungen. Mittels einer Parameterstudie werden Einflussgrößen von zwei Schwingphänomenen analysiert. Die erzielten Erkenntnisse werden anschließend erfolgreich auf ein zuvor schwingungsanfälliges Antriebssystem zugunsten eines stabilen, dynamischen Betriebsverhaltens übertragen, wodurch die Gültigkeit des Modells nachgewiesen wird.}}, author = {{Tominski, Johannes}}, isbn = {{978-3-8440-7499-4}}, publisher = {{Shaker Verlag GmbH}}, title = {{{Entwurf eines Simulationsmodells zur Beurteilung und Beeinflussung des dynamischen Betriebsverhalten von Spindelhubantrieben mit Trapezgewindespindel}}}, year = {{2020}}, } @article{22644, abstract = {{The aggregation of human islet amyloid polypeptide (hIAPP) plays a major role in the pathogenesis of type 2 diabetes mellitus (T2DM), and numerous strategies for controlling hIAPP aggregation have been investigated so far. In particular, several organic and inorganic nanoparticles (NPs) have shown the potential to influence the aggregation of hIAPP and other amyloidogenic proteins and peptides. In addition to conventional NPs, DNA nanostructures are receiving more and more attention from the biomedical field. Therefore, in this work, we investigated the effects of two different DNA origami nanostructures on hIAPP aggregation. To this end, we employed in situ turbidity measurements and ex situ atomic force microscopy (AFM). The turbidity measurements revealed a retarding effect of the DNA nanostructures on hIAPP aggregation, while the AFM results showed the co-aggregation of hIAPP with the DNA origami nanostructures into hybrid peptide–DNA aggregates. We assume that this was caused by strong electrostatic interactions between the negatively charged DNA origami nanostructures and the positively charged peptide. Most intriguingly, the influence of the DNA origami nanostructures on hIAPP aggregation differed from that of genomic double-stranded DNA (dsDNA) and appeared to depend on DNA origami superstructure. DNA origami nanostructures may thus represent a novel route for modulating amyloid aggregation in vivo.}}, author = {{Hanke, Marcel and Gonzalez Orive, Alejandro and Grundmeier, Guido and Keller, Adrian}}, issn = {{2079-4991}}, journal = {{Nanomaterials}}, pages = {{2200}}, title = {{{Effect of DNA Origami Nanostructures on hIAPP Aggregation}}}, doi = {{10.3390/nano10112200}}, volume = {{10}}, year = {{2020}}, } @article{22645, abstract = {{Immobile Holliday junctions represent not only the most fundamental building block of structural DNA nanotechnology but are also of tremendous importance for the in vitro investigation of genetic recombination and epigenetics. Here, we present a detailed study on the room-temperature assembly of immobile Holliday junctions with the help of the single-strand annealing protein Redβ. Individual DNA single strands are initially coated with protein monomers and subsequently hybridized to form a rigid blunt-ended four-arm junction. We investigate the efficiency of this approach for different DNA/protein ratios, as well as for different DNA sequence lengths. Furthermore, we also evaluate the potential of Redβ to anneal sticky-end modified Holliday junctions into hierarchical assemblies. We demonstrate the Redβ-mediated annealing of Holliday junction dimers, multimers, and extended networks several microns in size. While these hybrid DNA–protein nanostructures may find applications in the crystallization of DNA–protein complexes, our work shows the great potential of Redβ to aid in the synthesis of functional DNA nanostructures under mild reaction conditions.}}, author = {{Ramakrishnan, Saminathan and Subramaniam, Sivaraman and Kielar, Charlotte and Grundmeier, Guido and Stewart, A. Francis and Keller, Adrian}}, issn = {{1420-3049}}, journal = {{Molecules}}, pages = {{5099}}, title = {{{Protein-Assisted Room-Temperature Assembly of Rigid, Immobile Holliday Junctions and Hierarchical DNA Nanostructures}}}, doi = {{10.3390/molecules25215099}}, volume = {{25}}, year = {{2020}}, } @article{22646, abstract = {{Abstract The surface-assisted hierarchical self-assembly of DNA origami lattices represents a versatile and straightforward method for the organization of functional nanoscale objects such as proteins and nanoparticles. Here, we demonstrate that controlling the binding and exchange of different monovalent and divalent cation species at the DNA-mica interface enables the self-assembly of highly ordered DNA origami lattices on mica surfaces. The development of lattice quality and order is quantified by a detailed topological analysis of high-speed atomic force microscopy (HS-AFM) images. We find that lattice formation and quality strongly depend on the monovalent cation species. Na+ is more effective than Li+ and K+ in facilitating the assembly of high-quality DNA origami lattices, because it is replacing the divalent cations at their binding sites in the DNA backbone more efficiently. With regard to divalent cations, Ca2+ can be displaced more easily from the backbone phosphates than Mg2+ and is thus superior in guiding lattice assembly. By independently adjusting incubation time, DNA origami concentration, and cation species, we thus obtain a highly ordered DNA origami lattice with an unprecedented normalized correlation length of 8.2. Beyond the correlation length, we use computer vision algorithms to compute the time course of different topological observables that, overall, demonstrate that replacing MgCl2 by CaCl2 enables the synthesis of DNA origami lattices with drastically increased lattice order.}}, author = {{Xin, Yang and Martinez Rivadeneira, Salvador and Grundmeier, Guido and Castro, Mario and Keller, Adrian}}, issn = {{1998-0124}}, journal = {{Nano Research}}, pages = {{3142--3150}}, title = {{{Self-assembly of highly ordered DNA origami lattices at solid-liquid interfaces by controlling cation binding and exchange}}}, doi = {{10.1007/s12274-020-2985-4}}, volume = {{13}}, year = {{2020}}, } @article{22647, author = {{Kielar, Charlotte and Zhu, Siqi and Grundmeier, Guido and Keller, Adrian}}, issn = {{1433-7851}}, journal = {{Angewandte Chemie International Edition}}, pages = {{14336--14341}}, title = {{{Quantitative Assessment of Tip Effects in Single‐Molecule High‐Speed Atomic Force Microscopy Using DNA Origami Substrates}}}, doi = {{10.1002/anie.202005884}}, volume = {{59}}, year = {{2020}}, } @article{22648, abstract = {{

DNA origami lattice formation at solid–liquid interfaces is surprisingly resilient toward the incorporation of DNA origami impurities with different shapes.

}}, author = {{Xin, Yang and Ji, Xueyin and Grundmeier, Guido and Keller, Adrian}}, issn = {{2040-3364}}, journal = {{Nanoscale}}, pages = {{9733--9743}}, title = {{{Dynamics of lattice defects in mixed DNA origami monolayers}}}, doi = {{10.1039/d0nr01252a}}, volume = {{12}}, year = {{2020}}, } @article{22649, author = {{Xin, Yang and Kielar, Charlotte and Zhu, Siqi and Sikeler, Christoph and Xu, Xiaodan and Möser, Christin and Grundmeier, Guido and Liedl, Tim and Heuer‐Jungemann, Amelie and Smith, David M. and Keller, Adrian}}, issn = {{1613-6810}}, journal = {{Small}}, pages = {{1905959}}, title = {{{Cryopreservation of DNA Origami Nanostructures}}}, doi = {{10.1002/smll.201905959}}, volume = {{16}}, year = {{2020}}, } @article{22650, author = {{Keller, Adrian and Linko, Veikko}}, issn = {{1433-7851}}, journal = {{Angewandte Chemie International Edition}}, pages = {{15818--15833}}, title = {{{Challenges and Perspectives of DNA Nanostructures in Biomedicine}}}, doi = {{10.1002/anie.201916390}}, volume = {{59}}, year = {{2020}}, } @article{22651, author = {{Keller, Adrian and Grundmeier, Guido}}, issn = {{0169-4332}}, journal = {{Applied Surface Science}}, pages = {{144991}}, title = {{{Amyloid aggregation at solid-liquid interfaces: Perspectives of studies using model surfaces}}}, doi = {{10.1016/j.apsusc.2019.144991}}, volume = {{506}}, year = {{2020}}, } @article{22684, author = {{Huang, Jingyuan and Suma, Antonio and Cui, Meiying and Grundmeier, Guido and Carnevale, Vincenzo and Zhang, Yixin and Kielar, Charlotte and Keller, Adrian}}, issn = {{2688-4062}}, journal = {{Small Structures}}, pages = {{2000038}}, title = {{{Arranging Small Molecules with Subnanometer Precision on DNA Origami Substrates for the Single‐Molecule Investigation of Protein–Ligand Interactions}}}, doi = {{10.1002/sstr.202000038}}, volume = {{1}}, year = {{2020}}, } @phdthesis{22689, abstract = {{Das grundlegende Verständnis von makroskopischen Haftungsphänomenen beginnt bei der Analyse von molekularen Wechselwirkungen unter kontrollierten Bedingungen (Materialeigenschaften, chemische Oberflächenzusammensetzung, und weiteren Einflussfaktoren wie z.B. pH-Wert, Elektrolytzusammensetzung). In dieser Arbeit wurden die molekularen und makroskopischen Haftungseigenschaften von makromolekularer Poly(acrylsäure) (PAA) als potenzieller Haftungsvermittler auf Edelstahl und verschiedenen nanostrukturierten Zinkoxid (ZnO) Oberflächen untersucht, die mittels elektrochemischer und hydrothermalen Abscheidemethoden auf Edelstahl und feuerverzinktem Stahl (HDG) abgeschieden wurden. Molekulare Haftungsmechanismen zwischen PAA und ZnO basierend auf multi-koordinativen Bindungen in Abhängigkeit von der Oberflächenchemie und der Verweilzeit konnten mit der s.g. Einzelmolekülspektroskopie aufgeklärt werden. Die Ergebnisse aus weiteren makroskopischen Enthaftungsexperimenten und Rückseitenanalytik bei der Verwendung von verdünnten, wässrigen PAA-Lösungen zur Vorbehandlung von nanostrukturierten ZnO Filmen auf HDG Stahl untermauerten die starken Wechselwirkungen zwischen ZnO-PAA. Mittels Elektropolymerisation abgeschiedene PAA Filme zeigten eine signifikante Steigerung in den makroskopischen Haftungseigenschaften bei einem ausgewählten Model-Epoxid-Amin-Klebstoff auf Edelstahl. Die Kombination von ZnO Tetrapoden (ZnO TP) und PAA als hybridische, haftungsverbessernde Sprühbeschichtungen aus wässrigen Dispersionen auf Poly(propylen) Folien bestätigten, sowohl die chemischen, als auch mechanischen Haftungseigenschaften von nanostrukturierten ZnO/PAA Interphasen. Daher können PAA/Metalloxid-Grenzflächen die Tür in diversen technischen Ansätzen für innovative Anwendungen öffnen, wie z.B. in Sprühapplikationstechniken.}}, author = {{Meinderink, Dennis}}, title = {{{Molecular adhesion science and engineering of nanostructured poly(acrylic acid)/metal oxide interfaces}}}, doi = {{10.17619/UNIPB/1-1087}}, year = {{2020}}, } @article{22696, author = {{Grothe, R. and Knust, S. and Meinderink, Dennis and Voigt, M. and Orive, A. González and Grundmeier, Guido}}, issn = {{0257-8972}}, journal = {{Surface and Coatings Technology}}, title = {{{Spray pyrolysis of thin adhesion-promoting ZnO films on ZnMgAl coated steel}}}, doi = {{10.1016/j.surfcoat.2020.125869}}, year = {{2020}}, } @article{22771, author = {{Stefszky, Michael and Santandrea, Matteo and vom Bruch, Felix and Krapick, S. and Eigner, Christof and Ricken, R. and Quiring, V. and Herrmann, Harald and Silberhorn, Christine}}, issn = {{1094-4087}}, journal = {{Optics Express}}, title = {{{Waveguide resonator with an integrated phase modulator for second harmonic generation}}}, doi = {{10.1364/oe.412824}}, year = {{2020}}, } @article{22824, author = {{Hermanns, Patrick and Boeddeker, Simon and Bracht, Vera and Bibinov, Nikita and Grundmeier, Guido and Awakowicz, Peter}}, issn = {{0022-3727}}, journal = {{Journal of Physics D: Applied Physics}}, title = {{{Investigation of the frequency dependent spatio-temporal dynamics and controllability of microdischarges in unipolar pulsed plasma electrolytic oxidation}}}, doi = {{10.1088/1361-6463/abbde4}}, year = {{2020}}, }