@inproceedings{21383, author = {{Jürgenhake, Christoph and Anacker, Harald and Dumitrescu, Roman}}, booktitle = {{Proceedings of the IEEE}}, location = {{Dortmund}}, title = {{{The digital Stadium – From future scenarios to technology and business model development}}}, year = {{2020}}, } @inproceedings{21384, author = {{Röltgen, Daniel and Dumitrescu, Roman}}, booktitle = {{Procedia CIRP}}, number = {{91}}, pages = {{93--100}}, title = {{{Classification of Industrial Augmented Reality Use Cases}}}, year = {{2020}}, } @inproceedings{21385, author = {{Hobscheidt, Daniela and Kühn, Arno and Dumitrescu, Roman}}, booktitle = {{Procedia CIRP}}, number = {{91}}, pages = {{832–837}}, title = {{{Development of risk-optimized implementation paths for Industry 4.0 based on socio-technical pattern}}}, year = {{2020}}, } @inproceedings{21386, author = {{Wortmann, Fabio and Ellermann, Kai and Kühn, Arno and Dumitrescu, Roman}}, booktitle = {{Procedia CIRP}}, number = {{91}}, pages = {{559--564}}, title = {{{Ideation for digital platforms based on a companies‘ ecosystem}}}, year = {{2020}}, } @inproceedings{21387, author = {{Dyck, Florian and Stöcklein, Jörg and Eckertz, Daniel and Dumitrescu, Roman}}, booktitle = {{Virtual, Augmented and Mixed Reality. Design and Interaction }}, location = {{Copenhagen}}, pages = {{37--49}}, title = {{{Mixed Mock-up – Development of an Interactive Augmented Reality System for Assembly Planning}}}, year = {{2020}}, } @inproceedings{21388, author = {{Bretz, Lukas and Koenemann, Ulf and Anacker, Harald and Dumitrescu, Roman}}, booktitle = {{Procedia CIRP}}, number = {{91}}, pages = {{101--106}}, title = {{{A contribution to the design of organizational structures suitable for Systems Engineering}}}, year = {{2020}}, } @inproceedings{21389, author = {{Hillebrand, Michael and Greinert, Matthias and Herzog, Otthein and Dumitrescu, Roman}}, booktitle = {{Proceedings of the 2020 IEEE 15th International Conference of System of Systems Engineering (SoSE)}}, location = {{Budapest}}, pages = {{163--168}}, title = {{{Advanced Monkey Testing for connected autonomous systems}}}, year = {{2020}}, } @inproceedings{21390, author = {{Hillebrand, Michael and Lakhani, Mohsin and Dumitrescu, Roman}}, booktitle = {{Procedia Manufacturing 52}}, number = {{52}}, pages = {{266--271}}, title = {{{A design methodology for deep reinforcement learning for autonomous Systems}}}, doi = {{https://doi.org/10.1016/j.promfg.2020.11.044}}, year = {{2020}}, } @inbook{21391, author = {{Reinhart, Felix and von Enzberg, Sebastian and Kühn, Arno and Dumitrescu, Roman}}, booktitle = {{Machine Learning for Cyber Physical Systems. Technologien für die intelligente Automation (Technologies for Intelligent Automation)}}, editor = {{Beyerer, Jürgen and Maier, Alexander and Niggemann, Oliver}}, pages = {{25--33}}, publisher = {{Springer Vieweg, Berlin, Heidelberg}}, title = {{{Machine Learning for Process-X: A Taxonomy}}}, volume = {{11}}, year = {{2020}}, } @inproceedings{21392, author = {{Henkenjohann, Mark and Joppen, Robert and Köchling, Daniel and von Enzberg, Sebastian and Kühn, Arno and Dumitrescu, Roman}}, booktitle = {{Procedia CIRP}}, location = {{Gulf of Naples}}, title = {{{Identification and specification of standard modules in production for a material flow simulation}}}, year = {{2020}}, } @inproceedings{21394, author = {{Grote, Eva-Maria and Pfeifer, Stefan and Röltgen, Daniel and Kühn, Arno and Dumitrescu, Roman}}, booktitle = {{Proceedings of the 2020 IEEE International Symposium on Systems Engineering}}, location = {{Wien}}, title = {{{Towards defining role models in Advanced Systems Engineering}}}, year = {{2020}}, } @inbook{21395, author = {{Dumitrescu, Roman and Tschirner, Christian and Bansmann, Michael}}, booktitle = {{Handbuch Gestaltung digitaler und vernetzter Arbeitswelten}}, editor = {{Maier, Günter and Engels, Gregor and Steffen, Eckhard}}, pages = {{405--432}}, publisher = {{Springer-Verlag GmbH}}, title = {{{Systems Engineering als Grundlage der Gestaltung digitaler Arbeitswelten in der Produktentstehung}}}, year = {{2020}}, } @inbook{21396, abstract = {{Verifiable random functions (VRFs) are essentially digital signatures with additional properties, namely verifiable uniqueness and pseudorandomness, which make VRFs a useful tool, e.g., to prevent enumeration in DNSSEC Authenticated Denial of Existence and the CONIKS key management system, or in the random committee selection of the Algorand blockchain. Most standard-model VRFs rely on admissible hash functions (AHFs) to achieve security against adaptive attacks in the standard model. Known AHF constructions are based on error-correcting codes, which yield asymptotically efficient constructions. However, previous works do not clarify how the code should be instantiated concretely in the real world. The rate and the minimal distance of the selected code have significant impact on the efficiency of the resulting cryptosystem, therefore it is unclear if and how the aforementioned constructions can be used in practice. First, we explain inherent limitations of code-based AHFs. Concretely, we assume that even if we were given codes that achieve the well-known Gilbert-Varshamov or McEliece-Rodemich-Rumsey-Welch bounds, existing AHF-based constructions of verifiable random functions (VRFs) can only be instantiated quite inefficiently. Then we introduce and construct computational AHFs (cAHFs). While classical AHFs are information-theoretic, and therefore work even in presence of computationally unbounded adversaries, cAHFs provide only security against computationally bounded adversaries. However, we show that cAHFs can be instantiated significantly more efficiently. Finally, we use our cAHF to construct the currently most efficient verifiable random function with full adaptive security in the standard model.}}, author = {{Jager, Tibor and Niehues, David}}, booktitle = {{Lecture Notes in Computer Science}}, isbn = {{9783030384708}}, issn = {{0302-9743}}, keywords = {{Admissible hash functions, Verifiable random functions, Error-correcting codes, Provable security}}, location = {{Waterloo, Canada}}, title = {{{On the Real-World Instantiability of Admissible Hash Functions and Efficient Verifiable Random Functions}}}, doi = {{10.1007/978-3-030-38471-5_13}}, year = {{2020}}, } @article{21403, abstract = {{Es werden die Anwendungsvoraussetzungen des § 6a GrEStG unter Berücksichtigung der jüngsten BFH-Rspr. dargestellt und ein tabellarischer Überblick über die einzelnen Entscheidungen gegeben. Ausgehend von den Urteilsfällen wird auf die grunderwerbsteuerliche Behandlung von verschiedenen Umwandlungen eingegangen. In einem Ausblick wird der Bezug zum aktuellen Gesetzgebungsverfahren zur Reform der GrESt hergestellt.}}, author = {{Binder, Sebastian and Lorenz, Johannes}}, journal = {{Der Konzern}}, number = {{3}}, pages = {{98--104}}, title = {{{Update zur grunderwerbsteuerlichen Konzernklausel vor dem Hintergrund der jüngsten BFH-Rechtsprechung}}}, volume = {{18}}, year = {{2020}}, } @techreport{21406, abstract = {{Previous accounting research shows that taxes affect decision making by individuals and firms. Most studies assume that agents have an accurate perception regarding their tax burden. However, there is a growing body of literature analyzing whether taxes are indeed perceived correctly. We review 127 studies on the measurement of tax misperception and its behavioral implications. The review reveals that many taxpayers have substantial tax misperceptions that lead to biased decision making. We develop a Behavioral Taxpayer Response Model on the impact of provided tax information on tax perception. Besides individual traits, characteristics of the tax information and the decision environment determine the extent of tax misperception. We discuss opportunities for future research and methodological limitations. While there is much evidence on tax misperception at the individual level, we hardly find any research at the firm level. Little is known about the real effects of managers’ tax misperception and on how tax information is strategically managed to impact stakeholders. This research gap is surprising as a large part of the accounting literature analyzes decision making and disclosure of firms. We recommend a mixed-method approach combining experiments, surveys, and archival data analyses to improve the knowledge on tax misperception and its consequences.}}, author = {{Blaufus, Kay and Chirvi, Malte and Huber, Hans-Peter and Maiterth, Ralf and Sureth-Sloane, Caren}}, title = {{{Tax Misperception and Its Effects on Decision Making - a Literature Review}}}, volume = {{No. 39}}, year = {{2020}}, } @techreport{21407, author = {{Bornemann, Tobias and Schipp, Adrian and Sureth-Sloane, Caren}}, title = {{{ 2018/2019 Umfrage zur Steuerkomplexität in deutschen Finanzverwaltungen}}}, doi = {{10.52569/ILCP9945}}, year = {{2020}}, } @inbook{21408, abstract = {{This study presents a model in which heterogenous, risk-averse agents can use either (legal) tax optimisation or (illegal) tax evasion to reduce their tax burden and thus increase their utility. In addition to introducing individual variables like risk aversion or income, we allow agents to observe the behaviour of their neighbours. Depending on the behaviour of their peer group’s members, the agents’ utilities may increase or decrease, respectively. Simulation results show that taxpayers favour illegal evasion over legal optimisation in most cases. We find that interactions between taxpayers and their social networks have a deep impact on aggregate behaviour. Parameter changes such as increasing audit rates affect the results, often being intensified by social interactions. The effect of such changes varies depending on whether or not a fraction of agents is considered inherently honest.}}, author = {{Diller, Markus and Lorenz, Johannes and Meier, David}}, booktitle = {{ Operations Research Proceedings 2019}}, editor = {{Neufeld, Janis S. and Buscher, Udo and Lasch, Rainer and Möst, Dominik and Schönberger, Jörn}}, isbn = {{978-3-030-48439-2}}, pages = {{633--639}}, publisher = {{Springer}}, title = {{{Tax Avoidance and Social Control}}}, doi = {{10.1007/978-3-030-48439-2_77}}, year = {{2020}}, } @techreport{21409, abstract = {{European regulation mandates public country-by-country reporting for banks and is expected to increase reputational costs in case of tax haven activities. We test whether the availability of additional public information on the locations of banks' subsidiaries reduces their tax haven presence. In a preliminary difference-in-difference analysis we find that indeed, tax haven presence in “Dot-Havens” has declined significantly after the introduction of mandatory public country-by-country reporting for European banks, as compared to the insurance industry which is not subject to this regulation.}}, author = {{Eberhartinger, Eva and Speitmann, Raffael and Sureth-Sloane, Caren}}, title = {{{Real Effects of Public Country-by-Country Reporting and the Firm Structure of European Banks}}}, volume = {{#2020-01}}, year = {{2020}}, } @techreport{21410, abstract = {{We analyze the impact of trust on bargaining behavior between auditor and auditee in a tax setting. We study the effect of interpersonal trust and trust in government on both taxpayer and tax auditor. In an experiment with variation in pairwise trust settings, we find evidence that both kinds of trust affect the bargaining behavior, albeit in different ways. While trust in government increases taxpayers’ tax offers, interpersonal trust may lead to more concessionary behavior of tax auditors moderated by trust in government. Our findings help tax authorities to shape programs to enhance compliance in an atmosphere of trust.}}, author = {{Eberhartinger, Eva and Speitmann, Raffael and Sureth-Sloane, Caren}}, title = {{{How Does Trust Affect Concessionary Behavior in Tax Bargaining?}}}, volume = {{No. 41}}, year = {{2020}}, } @techreport{21411, abstract = {{This study examines the visibility of the GAAP effective tax rate (ETR) in firms’ financial statements as a distinct disclosure choice. Applying a game-theory disclosure model for voluntary disclosure strategies of firms to a tax setting, we argue that firms face a trade-off in their ETR disclosure decisions. On the one hand, firms have an incentive to enhance their ETR disclosure when the ratio offers shareholders “favourable conditions”, for example in terms of higher expected after-tax cash-flows. On the other hand, the disclosure of a favourable low ETR could attract the attention of tax auditors and the public and ultimately result in disclosure costs. We empirically test disclosure behaviour by examining the relation between disclosure visibility and different ETR conditions that reflect different stakeholder specific costs and benefits. While we find that unfavourable ETR conditions are not highlighted, we observe higher disclosure visibility for favourable ETRs (smooth, close to the industry average, decreasing). Additional analyses reveal that this high visibility is characteristic of firm-years with only moderately decreasing ETRs at usual ETR levels, while extreme ETRs are not highlighted. Interestingly and in contrast to our main results, a subsample of family firms do not seem to highlight favourable ETRs.}}, author = {{Flagmeier, Vanessa and Müller, Jens and Sureth-Sloane, Caren}}, title = {{{When Do Firms Highlight Their Effective Tax Rate?}}}, volume = {{No. 37}}, year = {{2020}}, } @article{21412, author = {{Heile, Vanessa and Huber, Hans-Peter and Maiterth, Ralf and Sureth-Sloane, Caren}}, journal = {{Deutsches Steuerrecht}}, number = {{42}}, pages = {{2327--2334}}, title = {{{Steuerliche Maßnahmen als nützliches Mittel zur Bewältigung der Corona-Krise? - Ergebnisse einer Unternehmensbefragung}}}, volume = {{58}}, year = {{2020}}, } @techreport{21414, author = {{Heile, Vanessa and Huber, Hans-Peter and Maiterth, Ralf and Sureth-Sloane, Caren}}, title = {{{Umfrage: Steuerliche Verwaltungskosten, steuerliche Corona-Soforthilfemaßnahmen und Investitionen in der Krise}}}, doi = {{10.52569/RUHF6645}}, year = {{2020}}, } @article{21415, abstract = {{This article comprehensively reviews Australia’s corporate income tax complexity as faced by multinational corporations (MNCs) and compares it to the average of the remaining OECD countries. Building on unique survey data, I find that the Australian tax code is considerably more complex than the OECD average, which is mainly due to overly complex anti-avoidance legislation, such as regulations on transfer pricing, general anti-avoidance or controlled foreign corporations (CFC). In contrast, Australia’s tax framework, which covers processes and features such as tax law enactment or tax audits, is close to the OECD average. A more detailed analysis yields further interesting insights. For example, excessive details in the tax code and the time between the announcement of a tax law change and its enactment turn out to be serious issues in Australia relative to the remaining OECD countries. }}, author = {{Hoppe, Thomas}}, journal = {{Australian Tax Forum}}, number = {{4}}, pages = {{451--475}}, title = {{{Tax Complexity in Australia – a Survey-Based Comparison to the OECD Average}}}, volume = {{35}}, year = {{2020}}, } @techreport{21416, abstract = {{This article comprehensively reviews Australia’s corporate income tax complexity as faced by multinational corporations (MNCs) and compares it to the average of the remaining OECD countries. Building on unique survey data, I find that the Australian tax code is considerably more complex than the OECD average, which is mainly due to overly complex anti-avoidance legislation, such as regulations on transfer pricing, general anti-avoidance or controlled foreign corporations (CFC). In contrast, Australia’s tax framework, which covers processes and features such as tax law enactment or tax audits, is close to the OECD average. A more granular analysis yields further interesting insights. For example, excessive details in the tax code and the time between the announcement of a tax law change and its enactment turn out to be serious issues in Australia relative to the remaining OECD countries.}}, author = {{Hoppe, Thomas}}, title = {{{Tax Complexity in Australia - A Survey-Based Comparison to the OECD Average}}}, volume = {{No. 14}}, year = {{2020}}, } @techreport{21417, author = {{Hoppe, Thomas and Schanz, Deborah and Schipp, Adrian and Siegel, Felix and Sturm, Susann and Sureth-Sloane, Caren}}, title = {{{2018 Global MNC Tax Complexity Survey}}}, doi = {{10.52569/RPVO1003}}, year = {{2020}}, } @techreport{21418, abstract = {{This paper introduces an index that comprehensively measures the complexity of countries’ corporate income tax systems faced by multinational corporations. It builds on surveys of highly experienced tax consultants of the largest international tax services networks. The index, called the Tax Complexity Index (TCI), is composed of a tax code subindex covering tax regulations and a tax framework subindex covering tax processes and features. For a sample of 100 countries, we find that tax complexity varies considerably across countries, and tax code and framework complexity also vary within countries. Among others, tax complexity is strongly driven by the complexity of transfer pricing regulations in the tax code and tax audits in the tax framework. When analyzing the associations with other country characteristics, we identify different patterns. For example, with regard to GDP, we find a positive association with tax code complexity and a negative association with tax framework complexity, suggesting that highly economically developed countries tend to have more complex tax codes and less complex frameworks. Overall, our tax complexity measures can serve as valuable proxies in future research and supportive tools for a variety of firm decisions and national and international tax policy discussions.}}, author = {{Hoppe, Thomas and Schanz, Deborah and Sturm, Susann and Sureth-Sloane, Caren}}, title = {{{Measuring Tax Complexity Across Countries: A Survey Study on MNCs}}}, volume = {{No. 5}}, year = {{2020}}, } @techreport{21419, abstract = {{This paper analyzes the association between tax complexity and foreign direct investments (FDI) based on the newly developed Tax Complexity Index (TCI) and its components. For a sample of 15,607 new foreign subsidiaries, we find no association between total tax complexity, as proxied by the TCI, and the location probability. When we decompose the TCI into tax code complexity and tax framework complexity, we find opposing associations. Tax code complexity is positively related to the location probability, while tax framework complexity is negatively related to it. These associations are, for example, driven by the complexity of transfer pricing and loss offset regulations in the tax code and the dimensions guidance, audits, as well as filing and payments, in the tax framework. In additional analyses, we find that the associations are sensitive to certain characteristics, such as country-specific and firm-specific characteristics. For example, the positive tax code association diminishes when tax rates are high. Overall, we are the first to provide empirical evidence on potential cost-benefit tradeoffs of tax complexity for FDI and thereby enhance prior literature, which has primarily focused on the costs of tax complexity.}}, author = {{Hoppe, Thomas and Schanz, Deborah and Sturm, Susann and Sureth-Sloane, Caren and Voget, Johannes}}, title = {{{The Relation between Tax Complexity and Foreign Direct Investments: Evidence Across Countries}}}, volume = {{No. 13}}, year = {{2020}}, } @article{21422, author = {{Sureth-Sloane, Caren}}, journal = {{AWV-Informationen}}, number = {{5}}, pages = {{16--19}}, title = {{{Steuerkomplexität als Standortfaktor. So komplex ist das Steuersystem in Deutschland}}}, year = {{2020}}, } @misc{21432, abstract = {{Robots are becoming increasingly autonomous and more capable. Because of a limited portable energy budget by e.g. batteries, and more demanding algorithms, an efficient computation is of interest. Field Programmable Gate Arrays (FPGAs) for example can provide fast and efficient processing and the Robot Operating System (ROS) is a popular middleware used for robotic applications. The novel ReconROS combines version 2 of the Robot Operating System with ReconOS, a framework for integrating reconfigurable hardware. It provides a unified interface between software and hardware. ReconROS is evaluated in this thesis by implementing a Sobel filter as the video processing application, running on a Zynq-7000 series System on Chip. Timing measurements were taken of execution and transfer times and were compared to theoretical values. Designing the hardware implementation is done by C code using High Level Synthesis and with the interface and functionality provided by ReconROS. An important aspect is the publish/subscribe mechanism of ROS. The Operating System interface functions for publishing and subscribing are reasonably fast at below 10 ms for a 1 MB color VGA image. The main memory interface performs well at higher data sizes, crossing 100 MB/s at 20 kB and increasing to a maximum of around 150 MB/s. Furthermore, the hardware implementation introduces consistency to the execution times and performs twice as fast as the software implementation.}}, author = {{Henke, Luca-Sebastian}}, title = {{{Evaluation of a ReconOS-ROS Combination based on a Video Processing Application}}}, year = {{2020}}, } @inproceedings{21438, author = {{Japs, Segej and Kharatyan, Aschot and Kaiser, Lydia and Dumitrescu, Roman}}, booktitle = {{Proceedings of the 16th International Design Conference (DESIGN 2020)}}, location = {{Cavtat}}, title = {{{CONSENS 3D: Method for 3D-Environment Driven Domain Knowledge Elicitaion and System Model Generation}}}, year = {{2020}}, } @inproceedings{21439, author = {{Pfeifer, Stefan and Seidenberg, Tobias and Jürgenhake, Christoph and Anacker, Harald and Dumitrescu, Roman}}, booktitle = {{Procedia Manufacturing}}, title = {{{Towards a modular product architecture for electric ferries using Model- Based Systems Engineering}}}, year = {{2020}}, } @inproceedings{21440, author = {{Wiecher, Carsten and Japs, Sergej and Kaiser, Lydia and Greenyer, Joel and Wolff, Carsten and Dumitrescu, Roman}}, booktitle = {{ACM/IEEE 23rd International Conference on Model Driven Engineering Languages and Systems (MODELS ’20 Companion)}}, title = {{{Scenarios in the Loop: Integrated Requirements Analysis and Automotive System Validation}}}, year = {{2020}}, } @inproceedings{21441, author = {{Yee, Jingye and Low, Cheng Yee and Ong, P. and Soh, WS and Hannapiah, Fazah Akhtar and Zakaria, NC and von Enzberg, Sebastian and Asmar, Laban and Dumitrescu, Roman}}, booktitle = {{IOP Conference Series: Materials Science and Engineering}}, title = {{{Verification of Mathematical Model for Upper Limb Spasticity with Clinical Data}}}, doi = {{10.1088/1757-899x/824/1/012013}}, year = {{2020}}, } @article{21444, author = {{Heggemann, Thomas and Homberg, Werner and Sapli, Hüseyin}}, issn = {{2351-9789}}, journal = {{Procedia Manufacturing}}, pages = {{36--42}}, title = {{{Combined Curing and Forming of Fiber Metal Laminates}}}, doi = {{10.1016/j.promfg.2020.04.118}}, year = {{2020}}, } @inproceedings{21480, author = {{Anjorin, Anthony and Weidmann, Nils and Oppermann, Robin and Fritsche, Lars and Schürr, Andy}}, booktitle = {{Proceedings of the 23rd ACM/IEEE International Conference on Model Driven Engineering Languages and Systems, MODELS 2020}}, editor = {{Syriani, Eugene and Sahraoui, Houari and de Lara, Juan and Abrahao, Silvia}}, isbn = {{9781450370196}}, location = {{Virtual Event, Canada}}, publisher = {{ACM}}, title = {{{Automating test schedule generation with domain-specific languages}}}, doi = {{10.1145/3365438.3410991}}, year = {{2020}}, } @inproceedings{21481, author = {{Weidmann, Nils and Fritsche, Lars and Anjorin, Anthony}}, booktitle = {{Proceedings of the 13th ACM SIGPLAN International Conference on Software Language Engineering, SLE 2020}}, editor = {{Lämmel, Ralf and Tratt, Laurcence and de Lara, Juan}}, isbn = {{9781450381765}}, location = {{Virtual Event, USA}}, publisher = {{ACM}}, title = {{{A search-based and fault-tolerant approach to concurrent model synchronisation}}}, doi = {{10.1145/3426425.3426932}}, year = {{2020}}, } @inproceedings{21482, author = {{Weidmann, Nils and Anjorin, Anthony and Cheney, James}}, booktitle = {{Proceedings of the Eleventh International Workshop on Graph Computation Models, GCM@STAF 2020}}, editor = {{Hoffmann, Berthold and Minas, Mark}}, issn = {{2075-2180}}, location = {{Online-Workshop}}, pages = {{1--12}}, publisher = {{EPTCS}}, title = {{{VICToRy: Visual Interactive Consistency Management in Tolerant Rule-based Systems}}}, doi = {{10.4204/eptcs.330.1}}, year = {{2020}}, } @inproceedings{21483, author = {{Jovanovikj, Ivan and Weidmann, Nils and Yigitbas, Enes and Anjorin, Anthony and Sauer, Stefan and Engels, Gregor}}, booktitle = {{Proceedings of the First International Conference on Systems Modelling and Management, ICSMM 2020 }}, editor = {{Babur, Önder and Denil, Joachim and Vogel-Heuser, Birgit}}, isbn = {{9783030581664}}, issn = {{1865-0929}}, location = {{Bergen, Norway}}, publisher = {{Springer}}, title = {{{A Model-Driven Mutation Framework for Validation of Test Case Migration}}}, doi = {{10.1007/978-3-030-58167-1_2}}, year = {{2020}}, } @misc{21486, booktitle = {{ERCIM News}}, editor = {{Bernijazov, Ruslan and Özcan, Leon and Dumitrescu, Roman}}, number = {{122}}, pages = {{36--37}}, title = {{{AI Marketplace – The Ecosystem for Artificial Intelligence in Product Creation }}}, year = {{2020}}, } @inproceedings{21522, author = {{Sapli, Hüseyin and Heggemann, Thomas and Homberg, Werner}}, location = {{Karlsruhe}}, title = {{{Combined Curing and Deep Drawing of Fiber Metal Laminates to Spherical Hybrid Components}}}, year = {{2020}}, } @inproceedings{21534, author = {{Bengs, Viktor and Hüllermeier, Eyke}}, booktitle = {{International Conference on Machine Learning}}, pages = {{778--787}}, title = {{{Preselection Bandits}}}, year = {{2020}}, } @unpublished{21536, abstract = {{We consider a resource-aware variant of the classical multi-armed bandit problem: In each round, the learner selects an arm and determines a resource limit. It then observes a corresponding (random) reward, provided the (random) amount of consumed resources remains below the limit. Otherwise, the observation is censored, i.e., no reward is obtained. For this problem setting, we introduce a measure of regret, which incorporates the actual amount of allocated resources of each learning round as well as the optimality of realizable rewards. Thus, to minimize regret, the learner needs to set a resource limit and choose an arm in such a way that the chance to realize a high reward within the predefined resource limit is high, while the resource limit itself should be kept as low as possible. We derive the theoretical lower bound on the cumulative regret and propose a learning algorithm having a regret upper bound that matches the lower bound. In a simulation study, we show that our learning algorithm outperforms straightforward extensions of standard multi-armed bandit algorithms.}}, author = {{Bengs, Viktor and Hüllermeier, Eyke}}, booktitle = {{arXiv:2011.00813}}, title = {{{Multi-Armed Bandits with Censored Consumption of Resources}}}, year = {{2020}}, } @article{21539, author = {{Ortmann, Regina and Pelster, Matthias and Wengerek, Sascha Tobias}}, issn = {{1544-6123}}, journal = {{Finance Research Letters}}, title = {{{COVID-19 and investor behavior}}}, doi = {{10.1016/j.frl.2020.101717}}, year = {{2020}}, } @inproceedings{21541, abstract = {{In this publication, the near-field to far-field transformation using the self-built near-field scanner NFS3000 is examined with regard to its geometry. This device allows to measure electric and magnetic fields in small distances to the DUT (Device under Test) with high geometric precision and high sensitivity. Leading to a fast examination of EMC (Electromagnetic Compatibility) problems, because the electromagnetic properties are better understandable and therefore easier to solve than e.g. measurements in a far-field chamber. In addition, it is possible to extrapolate the near-fields into the far-field and to determine the radiation pattern of antennas and emitting objects. For this purpose, this paper deals with the basis of this transformation, the so-called surface equivalence theorem. This principle is then adapted to the measurement of near-field scanners and implemented accordingly. Due to the non-ideal design of the near-field scanner, the effects on a far-field transformation are finally presented and discussed.}}, author = {{Lange, Sven and Schroder, Dominik and Hedayat, Christian and Hangmann, Christian and Otto, Thomas and Hilleringmann, Ulrich}}, booktitle = {{2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE}}, isbn = {{978-1-7281-5580-7}}, issn = {{2325-0364 }}, keywords = {{Near-Field Scanner, Near-Field to Far-Field Transformation, Directivity, Surface Equivalence Theorem, Huygens’ Box}}, location = {{Rome, Italy }}, publisher = {{IEEE}}, title = {{{Investigation of the Surface Equivalence Principle on a Metal Surface for a Near-Field to Far-Field Transformation by the NFS3000}}}, doi = {{10.1109/emceurope48519.2020.9245697}}, year = {{2020}}, } @inbook{21542, abstract = {{Using near-field (NF) scan data to predict the far-field (FF) behaviour of radiating electronic systems represents a novel method to accompany the whole RF design process. This approach involves so-called Huygens' box as an efficient radiation model inside an electromagnetic (EM) simulation tool and then transforms the scanned NF measured data into the FF. For this, the basic idea of the Huygens'box principle and the NF-to-FF transformation are briefly presented. The NF is measured on the Huygens' box around a device under test using anNF scanner, recording the magnitude and phase of the site-related magnetic and electric components. A comparison between a fullwave simulation and the measurement results shows a good similarity in both the NF and the simulated and transformed FF.Thus, this method is applicable to predict the FF behaviour of any electronic system by measuring the NF. With this knowledge, the RF design can be improved due to allowing a significant reduction of EM compatibility failure at the end of the development flow. In addition, the very efficient FF radiation model can be used for detailed investigations in various environments and the impact of such an equivalent radiation source on other electronic systems can be assessed.}}, author = {{Schröder, Dominik and Lange, Sven and Hangmann, Christian and Hedayat, Christian}}, booktitle = {{Tensorial Analysis of Networks (TAN) Modelling for PCB Signal Integrity and EMC Analysis}}, isbn = {{9781839530494}}, keywords = {{Huygens' box, NF-to-FF transformation, efficient FF radiation model, FF behaviour, EMI assessment, PCB, near-field measurements, efficient radiation model, far-field behaviour, RF design process, far-field prediction, Huygens'box principle, fullwave simulation, electronic system radiation, equivalent radiation source, electromagnetic simulation tool, near-field scan data, EM compatibility failure reduction}}, pages = {{315--346 (32)}}, publisher = {{ The Institution of Engineering and Technology (IET)}}, title = {{{Far-field prediction combining simulations with near-field measurements for EMI assessment of PCBs}}}, doi = {{10.1049/pbcs072e_ch14}}, year = {{2020}}, } @inbook{21579, author = {{Berger, Thomas and Lanza, Lukas Johannes}}, booktitle = {{Progress in Differential-Algebraic Equations II}}, isbn = {{9783030539047}}, issn = {{2199-7497}}, title = {{{Observers for Differential-Algebraic Systems with Lipschitz or Monotone Nonlinearities}}}, doi = {{10.1007/978-3-030-53905-4_9}}, year = {{2020}}, } @inproceedings{21584, author = {{Gatica, Carlos Paiz and Platzner, Marco}}, booktitle = {{Machine Learning for Cyber Physical Systems (ML4CPS 2017)}}, isbn = {{9783662590836}}, issn = {{2522-8579}}, title = {{{Adaptable Realization of Industrial Analytics Functions on Edge-Devices using Reconfigurable Architectures}}}, doi = {{10.1007/978-3-662-59084-3_9}}, year = {{2020}}, } @article{21608, author = {{Meschede, Henning}}, issn = {{0960-1481}}, journal = {{Renewable Energy}}, pages = {{1480--1491}}, title = {{{Analysis on the demand response potential in hotels with varying probabilistic influencing time-series for the Canary Islands}}}, doi = {{10.1016/j.renene.2020.06.024}}, year = {{2020}}, } @article{17331, author = {{Graf-Schlattmann, Marcel and Meister, Dorothee M. and Oevel, Gudrun and Wilde, Melanie}}, journal = {{Forschungsperspektiven auf Digitalisierung in Hochschulen, Zeitschrift für Hochschulentwicklung}}, number = {{1}}, title = {{{Kollektive Veränderungsbereitschaft als zentraler Erfolgsfaktor von Digitalisierungsprozessen an Hochschulen}}}, volume = {{15}}, year = {{2020}}, } @article{17335, author = {{Hampel, Uwe and Schubert, Markus and Döß, Alexander and Sohr, Johanna and Vishwakarma, Vineet and Repke, Jens‐Uwe and Gerke, Sören J. and Leuner, Hannes and Rädle, Matthias and Kapoustina, Viktoria and Schmitt, Lucas and Grünewald, Marcus and Brinkmann, Jost H. and Plate, Dominik and Kenig, Eugeny and Lutters, Nicole and Bolenz, Lukas and Buckmann, Felix and Toye, Dominique and Arlt, Wolfgang and Linder, Thomas and Hoffmann, Rainer and Klein, Harald and Rehfeldt, Sebastian and Winkler, Thomas and Bart, Hans‐Jörg and Wirz, Dominic and Schulz, Jonas and Scholl, Stephan and Augustin, Wolfgang and Jasch, Katharina and Schlüter, Florian and Schwerdtfeger, Natalie and Jahnke, Stefan and Jupke, Andreas and Kabatnik, Christoph and Braeuer, Andreas Siegfried and D'Auria, Mirko and Runowski, Thomas and Casal, Maria Francisco and Becker, Karsten and David, Anna‐Lena and Górak, Andrzej and Skiborowski, Mirko and Groß, Kai and Qammar, Hina}}, issn = {{0009-286X}}, journal = {{Chemie Ingenieur Technik}}, pages = {{926--948}}, title = {{{Recent Advances in Experimental Techniques for Flow and Mass Transfer Analyses in Thermal Separation Systems}}}, doi = {{10.1002/cite.202000076}}, volume = {{92}}, year = {{2020}}, } @inbook{17337, author = {{Jazayeri, Bahar and Schwichtenberg, Simon and Küster, Jochen and Zimmermann, Olaf and Engels, Gregor}}, booktitle = {{Advanced Information Systems Engineering}}, isbn = {{9783030494346}}, issn = {{0302-9743}}, title = {{{Modeling and Analyzing Architectural Diversity of Open Platforms}}}, doi = {{10.1007/978-3-030-49435-3_3}}, year = {{2020}}, } @inbook{17347, abstract = {{Peer-to-Peer news portals allow Internet users to write news articles and make them available online to interested readers. Despite the fact that authors are free in their choice of topics, there are a number of quality characteristics that an article must meet before it is published. In addition to meaningful titles, comprehensibly written texts and meaning- ful images, relevant tags are an important criteria for the quality of such news. In this case study, we discuss the challenges and common mistakes that Peer-to-Peer reporters face when tagging news and how incorrect information can be corrected through the orchestration of existing Natu- ral Language Processing services. Lastly, we use this illustrative example to give insight into the challenges of dealing with bottom-up taxonomies.}}, author = {{Bäumer, Frederik Simon and Kersting, Joschka and Buff, Bianca and Geierhos, Michaela}}, booktitle = {{Information and Software Technologies}}, editor = {{Audrius, Lopata and Rita, Butkienė and Daina, Gudonienė and Vilma, Sukackė}}, location = {{Kaunas, Litauen}}, pages = {{368----382}}, publisher = {{Springer}}, title = {{{Tag Me If You Can: Insights into the Challenges of Supporting Unrestricted P2P News Tagging}}}, doi = {{https://doi.org/10.1007/978-3-030-59506-7_30}}, volume = {{1283}}, year = {{2020}}, } @inproceedings{17348, author = {{Kucklick, Jan-Peter and Müller, Oliver}}, booktitle = {{Symposium on Statistical Challenges in Electronic Commerce Research (SCECR)}}, title = {{{Location, location, location: Satellite image-based real-estate appraisal}}}, year = {{2020}}, } @inproceedings{17349, author = {{Grabo, Matti and Staggenborg, Christoph and Kenig, Eugeny}}, location = {{Frankfurt am Main}}, title = {{{Modellierung und Optimierung makroverkapselter Latentwärmespeicherelemente für ein luftgeführtes Wärmespeichersystem}}}, year = {{2020}}, } @inbook{17352, author = {{Moritzer, Elmar and Hüttner, Matthias and Henning, Bernd and Webersen, Manuel}}, booktitle = {{Advances in Polymer Processing 2020}}, editor = {{Hopmann, Christian and Dahlmann, Rainer}}, isbn = {{9783662608081}}, location = {{Aachen}}, publisher = {{Springer}}, title = {{{The Influence of Hydrothermal Aging on the Material Properties of Continuous Fiber-Reinforced Thermoplastics and its Non-Destructive Characterization}}}, doi = {{10.1007/978-3-662-60809-8_16}}, year = {{2020}}, } @article{17358, abstract = {{Approximate circuits trade-off computational accuracy against improvements in hardware area, delay, or energy consumption. IP core vendors who wish to create such circuits need to convince consumers of the resulting approximation quality. As a solution we propose proof-carrying approximate circuits: The vendor creates an approximate IP core together with a certificate that proves the approximation quality. The proof certificate is bundled with the approximate IP core and sent off to the consumer. The consumer can formally verify the approximation quality of the IP core at a fraction of the typical computational cost for formal verification. In this paper, we first make the case for proof-carrying approximate circuits and then demonstrate the feasibility of the approach by a set of synthesis experiments using an exemplary approximation framework.}}, author = {{Witschen, Linus Matthias and Wiersema, Tobias and Platzner, Marco}}, issn = {{1557-9999}}, journal = {{IEEE Transactions On Very Large Scale Integration Systems}}, keywords = {{Approximate circuit synthesis, approximate computing, error metrics, formal verification, proof-carrying hardware}}, number = {{9}}, pages = {{2084 -- 2088}}, publisher = {{IEEE}}, title = {{{Proof-carrying Approximate Circuits}}}, doi = {{10.1109/TVLSI.2020.3008061}}, volume = {{28}}, year = {{2020}}, } @article{17359, abstract = {{In this article, we focus on the acceleration of a chemical reaction simulation that relies on a system of stiff ordinary differential equation (ODEs) targeting heterogeneous computing systems with CPUs and field-programmable gate arrays (FPGAs). Specifically, we target an essential kernel of the coupled chemistry aerosol-tracer transport model to the Brazilian developments on the regional atmospheric modeling system (CCATT-BRAMS). We focus on a linear solve step using the QR factorization based on the modified Gram-Schmidt method as the basis of the ODE solver in this application. We target Intel hardware accelerator research program (HARP) architecture with the OpenCL programming environment for these early experiments. Our design exploration reveals a hardware design that is up to 4 times faster than the original iterative Jacobi method used in this solver. Still, even with hardware support, the overall performance of our QR-based hardware is lower than its original software version.}}, author = {{Alberto Oliveira de Souza Junior, Carlos and Bispo, João and Cardoso, João M. P. and Diniz, Pedro C. and Marques, Eduardo}}, issn = {{2079-9292}}, journal = {{Electronics}}, keywords = {{pc2-harp-ressources}}, title = {{{Exploration of FPGA-Based Hardware Designs for QR Decomposition for Solving Stiff ODE Numerical Methods Using the HARP Hybrid Architecture}}}, doi = {{10.3390/electronics9050843}}, year = {{2020}}, } @article{17361, author = {{Johansson-Pajala, Rose-Marie and Thommes, Kirsten and Hoppe, Julia Amelie and Tuisku, Outi and Hennala, Lea and Pekkarinen, Satu and Melkas, Helina and Gustafsson, Christine}}, journal = {{International Journal of Social Robotics}}, pages = {{1--15}}, title = {{{Care Robot Orientation: What, Who and How? Potential Users` Perceptions}}}, doi = {{10.1007/s12369-020-00619-y}}, year = {{2020}}, } @article{17366, author = {{Hoppe, Julia Amelie and Johansson-Pajala, Rose-Marie and Gustafsson, Christine and Melkas, Helinä and Tusku, Outi and Pekkarinen, Satu and Hennala, Lea}}, issn = {{2364-9208}}, journal = {{Industrie 4.0 Management}}, title = {{{Technologieorientierung zu Assistenzrobotik – Welche Akzeptanz besteht bei der Einführung von Assistenzrobotik für die Pflege älterer Menschen?}}}, volume = {{2}}, year = {{2020}}, } @inbook{17367, author = {{Hoppe, Julia Amelie and Johansson-Pajala, Rose-Marie and Gustafsson, Christine and Melkas, Helinä and Tusku, Outi and Pekkarinen, Satu and Hennala, Lea and Thommes, Kirsten}}, booktitle = {{Aging between Participation and Simulation - Ethical Dimensions of Socially Assistive Technologies in elderly care }}, editor = {{Haltaufderheide, Joschka and Hovemann, Johanna and Vollmann, Jochen}}, pages = {{139--156}}, publisher = {{De Gruyter}}, title = {{{Assistive robots in care: Expectations and perceptions of older people}}}, doi = {{10.1515/9783110677485-009}}, year = {{2020}}, } @inproceedings{17368, author = {{Vorbohle, Christian and Szopinski, Daniel and Kundisch, Dennis}}, editor = {{Shishkov, B.}}, isbn = {{978-3-030-52305-3}}, location = {{Potsdam, Germany}}, publisher = {{Springer}}, title = {{{Business Model Dependencies: Towards conceptualizing dependencies for extending modeling languages for business models}}}, volume = {{391}}, year = {{2020}}, } @article{17369, author = {{Ho, Nam and Kaufmann, Paul and Platzner, Marco}}, journal = {{International Journal of Hybrid intelligent Systems}}, publisher = {{IOS Press}}, title = {{{Evolution of Application-Specific Cache Mappings}}}, year = {{2020}}, } @inproceedings{17370, abstract = {{ We consider a natural extension to the metric uncapacitated Facility Location Problem (FLP) in which requests ask for different commodities out of a finite set \( S \) of commodities. Ravi and Sinha (SODA 2004) introduced the model as the \emph{Multi-Commodity Facility Location Problem} (MFLP) and considered it an offline optimization problem. The model itself is similar to the FLP: i.e., requests are located at points of a finite metric space and the task of an algorithm is to construct facilities and assign requests to facilities while minimizing the construction cost and the sum over all assignment distances. In addition, requests and facilities are heterogeneous; they request or offer multiple commodities out of $S$. A request has to be connected to a set of facilities jointly offering the commodities demanded by it. In comparison to the FLP, an algorithm has to decide not only if and where to place facilities, but also which commodities to offer at each. To the best of our knowledge we are the first to study the problem in its online variant in which requests, their positions and their commodities are not known beforehand but revealed over time. We present results regarding the competitive ratio. On the one hand, we show that heterogeneity influences the competitive ratio by developing a lower bound on the competitive ratio for any randomized online algorithm of \( \Omega ( \sqrt{|S|} + \frac{\log n}{\log \log n} ) \) that already holds for simple line metrics. Here, \( n \) is the number of requests. On the other side, we establish a deterministic \( \mathcal{O}(\sqrt{|S|} \cdot \log n) \)-competitive algorithm and a randomized \( \mathcal{O}(\sqrt{|S|} \cdot \frac{\log n}{\log \log n} ) \)-competitive algorithm. Further, we show that when considering a more special class of cost functions for the construction cost of a facility, the competitive ratio decreases given by our deterministic algorithm depending on the function.}}, author = {{Castenow, Jannik and Feldkord, Björn and Knollmann, Till and Malatyali, Manuel and Meyer auf der Heide, Friedhelm}}, booktitle = {{Proceedings of the 32nd ACM Symposium on Parallelism in Algorithms and Architectures}}, isbn = {{9781450369350}}, keywords = {{Online Multi-Commodity Facility Location, Competitive Ratio, Online Optimization, Facility Location Problem}}, title = {{{The Online Multi-Commodity Facility Location Problem}}}, doi = {{10.1145/3350755.3400281}}, year = {{2020}}, } @inproceedings{17371, author = {{Castenow, Jannik and Kling, Peter and Knollmann, Till and Meyer auf der Heide, Friedhelm}}, booktitle = {{Proceedings of the 32nd ACM Symposium on Parallelism in Algorithms and Architectures}}, isbn = {{9781450369350}}, title = {{{Brief Announcement: A Discrete and Continuous Study of the Max-Chain-Formation Problem: Slow Down to Speed up}}}, doi = {{10.1145/3350755.3400263}}, year = {{2020}}, } @article{17375, author = {{Zhou, Jiaqi and Khazaei, Mohammad and Ranjbar, Ahmad and Wang, Vei and Kühne, Thomas D. and Ohno, Kaoru and Kawazoe, Yoshiyuki and Liang, Yunye}}, journal = {{J. Mater. Chem. C}}, pages = {{5211--5221}}, publisher = {{The Royal Society of Chemistry}}, title = {{{Modulation of nearly free electron states in hydroxyl-functionalized MXenes: a first-principles study}}}, doi = {{10.1039/C9TC06837F}}, volume = {{8}}, year = {{2020}}, } @article{17379, author = {{Kumar Sahoo, Sudhir and Heske, Julian Joachim and Azadi, Sam and Zhang, Zhenzhe and V Tarakina, Nadezda and Oschatz, Martin and Z. Khaliullin, Rustam and Antonietti, Markus and Kühne, Thomas}}, journal = {{Scientific Reports}}, number = {{1}}, title = {{{On the Possibility of Helium Adsorption in Nitrogen Doped Graphitic Materials}}}, doi = {{10.1038/s41598-020-62638-z}}, volume = {{10}}, year = {{2020}}, } @article{17381, author = {{Elgabarty, Hossam and Kampfrath, Tobias and Bonthuis, Douwe Jan and Balos, Vasileios and Kaliannan, Naveen Kumar and Loche, Philip and Netz, Roland R. and Wolf, Martin and K{\, Thomas D. and Sajadi, Mohsen}}, journal = {{Science Advances}}, number = {{17}}, publisher = {{American Association for the Advancement of Science}}, title = {{{Energy transfer within the hydrogen bonding network of water following resonant terahertz excitation}}}, doi = {{10.1126/sciadv.aay7074}}, volume = {{6}}, year = {{2020}}, } @article{17382, author = {{Rengaraj, Varadarajan and Lass, Michael and Plessl, Christian and Kühne, Thomas D.}}, issn = {{2079-3197}}, journal = {{Computation}}, number = {{2}}, pages = {{39}}, publisher = {{MDPI AG}}, title = {{{Accurate Sampling with Noisy Forces from Approximate Computing}}}, doi = {{10.3390/computation8020039}}, volume = {{8}}, year = {{2020}}, } @article{17384, author = {{Elgabarty, Hossam and Kühne, Thomas D.}}, journal = {{Phys. Chem. Chem. Phys.}}, pages = {{10397--10411}}, publisher = {{The Royal Society of Chemistry}}, title = {{{Tumbling with a limp: local asymmetry in water's hydrogen bond network and its consequences}}}, doi = {{10.1039/C9CP06960G}}, volume = {{22}}, year = {{2020}}, } @article{17386, author = {{Kühne, Thomas D. and Iannuzzi, Marcella and Del Ben, Mauro and Rybkin, Vladimir V. and Seewald, Patrick and Stein, Frederick and Laino, Teodoro and Khaliullin, Rustam Z. and Schütt, Ole and Schiffmann, Florian and al., et}}, issn = {{1089-7690}}, journal = {{The Journal of Chemical Physics}}, number = {{19}}, pages = {{194103}}, publisher = {{AIP Publishing}}, 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{17390, author = {{Chantakit, Teanchai and Schlickriede, Christian and Sain, Basudeb and Meyer, Fabian and Weiss, Thomas and Chattham, Nattaporn and Zentgraf, Thomas}}, issn = {{2327-9125}}, journal = {{Photonics Research}}, number = {{9}}, pages = {{1435--1440}}, publisher = {{OSA}}, title = {{{All-dielectric silicon metalens for two-dimensional particle manipulation in optical tweezers}}}, doi = {{10.1364/prj.389200}}, volume = {{8}}, year = {{2020}}, } @inproceedings{17398, author = {{Turcanu, Ion and Engel, Thomas and Sommer, Christoph}}, booktitle = {{2019 IEEE Vehicular Networking Conference (VNC)}}, isbn = {{9781728145716}}, title = {{{Fog Seeding Strategies for Information-Centric Heterogeneous Vehicular Networks}}}, doi = {{10.1109/vnc48660.2019.9062816}}, year = {{2020}}, } @inproceedings{17405, author = {{Frank, Maximilian and Gausemeier, Juergen and Hennig-Cardinal von Widdern, Nils and Koldewey, Christian and Menzefricke, Joern Steffen and Reinhold, Jannik}}, booktitle = {{Proceedings of the ISPIM connects}}, publisher = {{International Society for Professional Innovation Management (ISPIM)}}, title = {{{A reference process for the Smart Service business: development and practical implications}}}, year = {{2020}}, } @inproceedings{17406, author = {{Becker, Julia-Kristin and Joachim, Klemens and Koldewey, Christian and Reinhold, Jannik and Dumitrescu, Roman}}, booktitle = {{Proceedings of the 2020 ISPIM Innovation Conference (Virtual) Event "Innovating in Times of Crisis"}}, publisher = {{ISPIM Innovation Conference}}, title = {{{Scaling Digital Business Models: A Case from the Automotive Industry}}}, year = {{2020}}, } @inproceedings{17407, author = {{Tornede, Alexander and Wever, Marcel Dominik and Hüllermeier, Eyke}}, booktitle = {{Discovery Science}}, title = {{{Extreme Algorithm Selection with Dyadic Feature Representation}}}, year = {{2020}}, } @inproceedings{17408, author = {{Hanselle, Jonas Manuel and Tornede, Alexander and Wever, Marcel Dominik and Hüllermeier, Eyke}}, booktitle = {{KI 2020: Advances in Artificial Intelligence}}, title = {{{Hybrid Ranking and Regression for Algorithm Selection}}}, year = {{2020}}, } @inbook{17411, abstract = {{Many dynamical systems possess symmetries, e.g. rotational and translational invariances of mechanical systems. These can be beneficially exploited in the design of numerical optimal control methods. We present a model predictive control scheme which is based on a library of precomputed motion primitives. The primitives are equivalence classes w.r.t. the symmetry of the optimal control problems. Trim primitives as relative equilibria w.r.t. this symmetry, play a crucial role in the algorithm. The approach is illustrated using an academic mobile robot example.}}, author = {{Flaßkamp, Kathrin and Ober-Blöbaum, Sina and Peitz, Sebastian}}, booktitle = {{Advances in Dynamics, Optimization and Computation}}, editor = {{Junge, Oliver and Schütze, Oliver and Froyland, Gary and Ober-Blöbaum, Sina and Padberg-Gehle, Kathrin}}, isbn = {{9783030512637}}, issn = {{2198-4182}}, publisher = {{Springer}}, title = {{{Symmetry in Optimal Control: A Multiobjective Model Predictive Control Approach}}}, doi = {{10.1007/978-3-030-51264-4_9}}, year = {{2020}}, } @inproceedings{17424, author = {{Tornede, Tanja and Tornede, Alexander and Wever, Marcel Dominik and Mohr, Felix and Hüllermeier, Eyke}}, booktitle = {{Proceedings of the ECMLPKDD 2020}}, title = {{{AutoML for Predictive Maintenance: One Tool to RUL Them All}}}, doi = {{10.1007/978-3-030-66770-2_8}}, year = {{2020}}, } @article{17426, abstract = {{The development of renewable energies and smart mobility has profoundly impacted the future of the distribution grid. An increasing bidirectional energy flow stresses the assets of the distribution grid, especially medium voltage switchgear. This calls for improved maintenance strategies to prevent critical failures. Predictive maintenance, a maintenance strategy relying on current condition data of assets, serves as a guideline. Novel sensors covering thermal, mechanical, and partial discharge aspects of switchgear, enable continuous condition monitoring of some of the most critical assets of the distribution grid. Combined with machine learning algorithms, the demands put on the distribution grid by the energy and mobility revolutions can be handled. In this paper, we review the current state-of-the-art of all aspects of condition monitoring for medium voltage switchgear. Furthermore, we present an approach to develop a predictive maintenance system based on novel sensors and machine learning. We show how the existing medium voltage grid infrastructure can adapt these new needs on an economic scale.}}, author = {{Hoffmann, Martin W. and Wildermuth, Stephan and Gitzel, Ralf and Boyaci, Aydin and Gebhardt, Jörg and Kaul, Holger and Amihai, Ido and Forg, Bodo and Suriyah, Michael and Leibfried, Thomas and Stich, Volker and Hicking, Jan and Bremer, Martin and Kaminski, Lars and Beverungen, Daniel and zur Heiden, Philipp and Tornede, Tanja}}, issn = {{1424-8220}}, journal = {{Sensors}}, title = {{{Integration of Novel Sensors and Machine Learning for Predictive Maintenance in Medium Voltage Switchgear to Enable the Energy and Mobility Revolutions}}}, doi = {{10.3390/s20072099}}, year = {{2020}}, } @article{17433, author = {{Wang, D. Q. and Reuter, Dirk and Wieck, A. D. and Hamilton, A. R. and Klochan, O.}}, issn = {{0003-6951}}, journal = {{Applied Physics Letters}}, title = {{{Two-dimensional lateral surface superlattices in GaAs heterostructures with independent control of carrier density and modulation potential}}}, doi = {{10.1063/5.0009462}}, year = {{2020}}, } @article{17434, author = {{Kunnathully, Vinay S. and Riedl, Thomas and Trapp, Alexander and Langer, Timo and Reuter, Dirk and Lindner, Jörg K.N.}}, issn = {{0022-0248}}, journal = {{Journal of Crystal Growth}}, title = {{{InAs heteroepitaxy on nanopillar-patterned GaAs (111)A}}}, doi = {{10.1016/j.jcrysgro.2020.125597}}, year = {{2020}}, } @article{17435, author = {{Geier, M. and Freudenfeld, J. and Silva, J. T. and Umansky, V. and Reuter, Dirk and Wieck, A. D. and Brouwer, P. W. and Ludwig, S.}}, issn = {{2469-9950}}, journal = {{Physical Review B}}, title = {{{Electrostatic potential shape of gate-defined quantum point contacts}}}, doi = {{10.1103/physrevb.101.165429}}, year = {{2020}}, } @article{17436, abstract = {{The study of electron transport in low-dimensional systems is of importance, not only from a fundamental point of view, but also for future electronic and spintronic devices. In this context heterostructures containing a two-dimensional electron gas (2DEG) are a key technology. In particular GaAs/AlGaAs heterostructures, with a 2DEG at typically 100 nm below the surface, are widely studied. In order to explore electron transport in such systems, low-resistance ohmic contacts are required that connect the 2DEG to macroscopic measurement leads at the surface. Here we report on designing and measuring a dedicated device for unraveling the various resistance contributions in such contacts, which include pristine 2DEG series resistance, the 2DEG resistance under a contact, the contact resistance itself, and the influence of pressing a bonding wire onto a contact. We also report here a recipe for contacts with very low resistance values that remain below 10 Ω for annealing times between 20 and 350 s, hence providing the flexibility to use this method for materials with different 2DEG depths. The type of heating, temperature ramp rate and gas forming used for annealing is found to strongly influence the annealing process and hence the quality of the resulting contacts.}}, author = {{Javaid Iqbal, Muhammad and Reuter, Dirk and Wieck, Andreas Dirk and van der Wal, Caspar}}, issn = {{1286-0042}}, journal = {{The European Physical Journal Applied Physics}}, title = {{{Characterization of low-resistance ohmic contacts to a two-dimensional electron gas in a GaAs/AlGaAs heterostructure}}}, doi = {{10.1051/epjap/2020190202}}, year = {{2020}}, } @article{17437, author = {{Ebler, C. and Labud, P. A. and Rai, A. K. and Reuter, Dirk and Wieck, A. D. and Ludwig, A.}}, issn = {{2469-9950}}, journal = {{Physical Review B}}, title = {{{Electrical detection of excitonic states by time-resolved conductance measurements}}}, doi = {{10.1103/physrevb.101.125303}}, year = {{2020}}, } @article{17523, abstract = {{Compact and robust cold atom sources are increasingly important for quantum research, especially for transferring cutting-edge quantum science into practical applications. In this study, we report on a novel scheme that uses a metasurface optical chip to replace the conventional bulky optical elements used to produce a cold atomic ensemble with a single incident laser beam, which is split by the metasurface into multiple beams of the desired polarization states. Atom numbers ~107 and temperatures (about 35 μK) of relevance to quantum sensing are achieved in a compact and robust fashion. Our work highlights the substantial progress toward fully integrated cold atom quantum devices by exploiting metasurface optical chips, which may have great potential in quantum sensing, quantum computing, and other areas.}}, author = {{Zhu, Lingxiao and Liu, Xuan and Sain, Basudeb and Wang, Mengyao and Schlickriede, Christian and Tang, Yutao and Deng, Junhong and Li, Kingfai and Yang, Jun and Holynski, Michael and Zhang, Shuang and Zentgraf, Thomas and Bongs, Kai and Lien, Yu-Hung and Li, Guixin}}, issn = {{2375-2548}}, journal = {{Science Advances}}, number = {{31}}, publisher = {{American Association for the Advancement of Science}}, title = {{{A dielectric metasurface optical chip for the generation of cold atoms}}}, doi = {{10.1126/sciadv.abb6667}}, volume = {{6}}, year = {{2020}}, } @article{17578, author = {{Schweizer, Swetlana and Becker-Staines, Anna and Tröster, Thomas}}, issn = {{0956-053X}}, journal = {{Waste Management}}, pages = {{74--82}}, title = {{{Separation and reclamation of automotive hybrid structures made of metal and fibre-reinforced plastic}}}, doi = {{10.1016/j.wasman.2020.04.042}}, year = {{2020}}, } @article{17589, author = {{Sonnenrein, G. and Baumhögger, Elmar and Elsner, A. and Morbach, A. and Neukötter, M. and Paul, A. and Vrabec, J.}}, issn = {{0140-7007}}, journal = {{International Journal of Refrigeration}}, title = {{{Improving the performance of household refrigerating appliances through the integration of phase change materials in the context of the new global refrigerator standard IEC 62552:2015}}}, doi = {{10.1016/j.ijrefrig.2020.07.025}}, year = {{2020}}, } @unpublished{17605, abstract = {{Syntactic annotation of corpora in the form of part-of-speech (POS) tags is a key requirement for both linguistic research and subsequent automated natural language processing (NLP) tasks. This problem is commonly tackled using machine learning methods, i.e., by training a POS tagger on a sufficiently large corpus of labeled data. While the problem of POS tagging can essentially be considered as solved for modern languages, historical corpora turn out to be much more difficult, especially due to the lack of native speakers and sparsity of training data. Moreover, most texts have no sentences as we know them today, nor a common orthography. These irregularities render the task of automated POS tagging more difficult and error-prone. Under these circumstances, instead of forcing the POS tagger to predict and commit to a single tag, it should be enabled to express its uncertainty. In this paper, we consider POS tagging within the framework of set-valued prediction, which allows the POS tagger to express its uncertainty via predicting a set of candidate POS tags instead of guessing a single one. The goal is to guarantee a high confidence that the correct POS tag is included while keeping the number of candidates small. In our experimental study, we find that extending state-of-the-art POS taggers to set-valued prediction yields more precise and robust taggings, especially for unknown words, i.e., words not occurring in the training data.}}, author = {{Heid, Stefan Helmut and Wever, Marcel Dominik and Hüllermeier, Eyke}}, booktitle = {{Journal of Data Mining and Digital Humanities}}, publisher = {{episciences}}, title = {{{Reliable Part-of-Speech Tagging of Historical Corpora through Set-Valued Prediction}}}, year = {{2020}}, } @techreport{17703, abstract = {{Employing a unique sample of 2,849 tariff imposition announcements by and against the United States (U.S.) over the period from 2018 to 2019, this study analyzes the impact of recent tariff announcements on share prices from 859 U.S. companies. We provide evidence for negative (cumulative) average abnormal stock returns due to tariff announcements during a symmetric three-day event window. We suggest that stock market investors expect adverse impacts of tariff impositions, e.g. a decrease in the companies' future cash flows and a threat of retaliation. The negative wealth effects are observed irrespective of whether the Trump administration announces safeguard tariffs to protect domestic firms or a retaliation is declared by foreign countries. Moreover, building several subsamples, we find that the adverse impact is mostly driven by announcements involving China and is associated with a variety of sector, tariff, trade and firm characteristics.}}, author = {{Wengerek, Sascha Tobias}}, keywords = {{event study, international relations, protectionism, strategic trade policy, tariffs, trade conflict}}, pages = {{63}}, title = {{{Share price reactions to tariff imposition announcements in the Trump era - An event study of the trade conflict}}}, year = {{2020}}, } @article{17730, author = {{Ortmann, Regina and Pelster, Matthias and Wengerek, Sascha Tobias}}, issn = {{1544-6123}}, journal = {{Finance Research Letters}}, title = {{{COVID-19 and investor behavior}}}, doi = {{10.1016/j.frl.2020.101717}}, volume = {{37}}, year = {{2020}}, } @inproceedings{17763, author = {{Haeb-Umbach, Reinhold}}, booktitle = {{Studientexte zur Sprachkommunikation: Elektronische Sprachsignalverarbeitung 2020}}, editor = {{Böck, Ronald and Siegert, Ingo and Wendemuth, Andreas}}, isbn = {{978-3-959081-93-1}}, keywords = {{Poster}}, pages = {{227--234}}, publisher = {{TUDpress, Dresden}}, title = {{{Sprachtechnologien für Digitale Assistenten}}}, year = {{2020}}, } @article{17803, abstract = {{We numerically simulate multiple light scattering in discrete disordered media represented by large clusters of irregular non-absorbing particles. The packing density of clusters is 0.5. With such conditions diffuse scattering is significantly reduced and light transport follows propagation channels that are determined by the particle size and topology of the medium. This kind of localization produces coherent backscattering intensity surge and enhanced negative polarization branch if compared to lower density samples.}}, author = {{Grynko, Yevgen and Shkuratov, Yuriy and Förstner, Jens}}, issn = {{0022-4073}}, journal = {{Journal of Quantitative Spectroscopy and Radiative Transfer}}, keywords = {{tet_topic_scattering}}, pages = {{107234}}, title = {{{Light backscattering from large clusters of densely packed irregular particles}}}, doi = {{10.1016/j.jqsrt.2020.107234}}, volume = {{255}}, year = {{2020}}, } @article{17808, author = {{Gmyr, Robert and Hinnenthal, Kristian and Kostitsyna, Irina and Kuhn, Fabian and Rudolph, Dorian and Scheideler, Christian and Strothmann, Thim}}, journal = {{Nat. Comput.}}, number = {{2}}, pages = {{375--390}}, title = {{{Forming tile shapes with simple robots}}}, doi = {{10.1007/s11047-019-09774-2}}, volume = {{19}}, year = {{2020}}, } @article{17812, author = {{Hielscher, Christian and Grenz, Julian and Camberg, Alan Adam and Wingenbach, Nils}}, issn = {{0001-2785}}, journal = {{ATZ - Automobiltechnische Zeitschrift}}, pages = {{60--65}}, title = {{{Ansatz zur effizienteren Auslegung von Hybridbauteilen}}}, doi = {{10.1007/s35148-020-0284-8}}, year = {{2020}}, } @article{17813, author = {{Hielscher, Christian and Grenz, Julian and Camberg, Alan Adam and Wingenbach, Nils}}, issn = {{2192-9076}}, journal = {{ATZ worldwide}}, pages = {{58--61}}, title = {{{Approach to More Efficient Design of Hybrid Components}}}, doi = {{10.1007/s38311-020-0267-0}}, year = {{2020}}, } @unpublished{17825, abstract = {{Software verification has recently made enormous progress due to the development of novel verification methods and the speed-up of supporting technologies like SMT solving. To keep software verification tools up to date with these advances, tool developers keep on integrating newly designed methods into their tools, almost exclusively by re-implementing the method within their own framework. While this allows for a conceptual re-use of methods, it requires novel implementations for every new technique. In this paper, we employ cooperative verification in order to avoid reimplementation and enable usage of novel tools as black-box components in verification. Specifically, cooperation is employed for the core ingredient of software verification which is invariant generation. Finding an adequate loop invariant is key to the success of a verification run. Our framework named CoVerCIG allows a master verification tool to delegate the task of invariant generation to one or several specialized helper invariant generators. Their results are then utilized within the verification run of the master verifier, allowing in particular for crosschecking the validity of the invariant. We experimentally evaluate our framework on an instance with two masters and three different invariant generators using a number of benchmarks from SV-COMP 2020. The experiments show that the use of CoVerCIG can increase the number of correctly verified tasks without increasing the used resources}}, author = {{Haltermann, Jan Frederik and Wehrheim, Heike}}, booktitle = {{arXiv:2008.04551}}, title = {{{Cooperative Verification via Collective Invariant Generation}}}, year = {{2020}}, } @proceedings{17836, editor = {{Werneck Richa, Andrea and Scheideler, Christian}}, isbn = {{978-3-030-54920-6}}, publisher = {{Springer}}, title = {{{Structural Information and Communication Complexity - 27th International Colloquium, SIROCCO 2020, Paderborn, Germany, June 29 - July 1, 2020, Proceedings}}}, doi = {{10.1007/978-3-030-54921-3}}, volume = {{12156}}, year = {{2020}}, } @proceedings{17839, editor = {{Scheideler, Christian and Spear, Michael}}, isbn = {{978-1-4503-6935-0}}, publisher = {{ACM}}, title = {{{SPAA '20: 32nd ACM Symposium on Parallelism in Algorithms and Architectures, Virtual Event, USA, July 15-17, 2020}}}, doi = {{10.1145/3350755}}, year = {{2020}}, } @inproceedings{18686, author = {{Kersting, Joschka and Bäumer, Frederik Simon}}, booktitle = {{PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON APPLIED COMPUTING 2020}}, keywords = {{Software Requirements, Natural Language Processing, Transfer Learning, On-The-Fly Computing}}, location = {{Lisbon, Portugal}}, pages = {{119----123}}, publisher = {{IADIS}}, title = {{{SEMANTIC TAGGING OF REQUIREMENT DESCRIPTIONS: A TRANSFORMER-BASED APPROACH}}}, year = {{2020}}, } @inbook{18776, author = {{Seng, Eva- Maria and Göttmann, Frank}}, booktitle = {{Innovation in der Bauwirtschaft – Innovation in the building industry. Wesersandstein vom 16. bis 19. Jahrhundert – Weser Sandstone form the 16th to the 19th Century}}, pages = {{1--78}}, publisher = {{(im Druck)}}, title = {{{Einleitung – Introduction}}}, year = {{2020}}, }