TY - JOUR
AU - Pekkarinen, Satu
AU - Hennala, Lea
AU - Tuisku, Outi
AU - Gustafsson, Christine
AU - Johansson-Pajala, Rose-Marie
AU - Thommes, Kirsten
AU - Hoppe, Julia Amelie
AU - Melkas, Helinä
ID - 21126
JF - Gerontechnology
SN - 1569-1101
TI - Care robots in society: Knowledge and orientation needs
ER -
TY - JOUR
AU - Johansson-Pajala, Rose-Marie
AU - Thommes, Kirsten
AU - Hoppe, Julia Amelie
AU - Tuisku, Outi
AU - Hennala, Lea
AU - Pekkarinen, Satu
AU - Melkas, Helinä
AU - Gustafsson, Christine
ID - 21127
JF - Gerontechnology
SN - 1569-1101
TI - The need for care robot orientation in elder care services
ER -
TY - GEN
AB - In modern lightweight designs, it is important to find a compromise between the strength and the weight of the construction detail. Hence, hybrid structures made of aluminum and steel materials are increasingly being used in automotive applications. Due to limitations in the quality of resistance spot welding, self-piercing riveting can be used as an alternative process to join sheets from different material groups. The aim of this project is to develop a computational method to assess the self-piercing riveted components subjected to the cyclic loads. To achieve this goal, two approaches are followed: Evaluation unsing internal forces: A substitute model is developed to describe the stiffness of self-piercing riveted joints subjected to different loading conditions. The parameters of the substitute model are identified and the internal force components acting on the joint are evaluated. The model provides the basis for the subsequent fatigue life estimation of self-piercing riveted components. For joints subjected to low bending moments, the fatigue life of components can be estimated accurately. Due to lack of specimen geometries producing pure bending and the combination of tension-bending forces, it is not possible to estimate the fatigue life of complex components subjected to high bending moments. Based on the results of [Mesc 16], the methodology is further developed to determine the stresses acting on the joint and to characterize the joining point with the use of simulations. The local concept proposed in the FKM guideline nonlinear provides the basis for the analytical assessment of self-piercing riveted components. In this regard, the cyclic behavior of the material and the local stresses are required as input data. The cyclic behavior of the aluminum EN AW-6181A-T6 and steel HX340LAD sheets were already determined in the previous project. Subsequently, in this project the properties of the rivet made of 38B2 steel are identified. The finite element analysis using elastic-plastic material behavior is used to determine the stresses in the joint subjected to the cyclic loads. To verify the model, the results of simulations and experiments are compared concerning the crack initiation zone as well as the determined number of cycles. To determine the stresses that can be used for the analytical assessment, the damage relevant load components need to be identified. In this regard, it is recommended to use the normal stress perpendicular to the crack propagation direction, the stress of crack opening mode I. Using the damage parameter PRAM and considering the support factors according to the FKM guideline nonlinear, a reliable estimation of the crack initiation zone within the joint is possible. Regarding the joint made of aluminum sheet EN AW-6181A, the methodology is able to provide promising results. However, regarding the joints made of aluminum EN AW-6181A and steel HX340LAD sheets, there is still potential to improve the results. The reasons for this are described in chapter 7.2.5 and 7.2.6. An analytical fatigue assessment is relatively easy to achieve with procedure 1. However, contrary to the objective formulated above, expensive fatigue tests are necessary to determine the failure conditions (strength values). This disadvantage can be circumvented by determining the strength information of individual joining points under different load types using procedure 2. The latter, in return, is not suitable for the assessment of complex components with several joining points. Due to the increasing calculation times of the simulation, the application in this case is not economically reasonable. By the described combination of method 1 and 2, the disadvantages of the two individual concepts can be compensated. An analytical fatigue assessment of self-piercing riveted components can be carried out based on the cyclic material behavior. The objective of the project was achieved.
AU - Otroshi, Mortaza
AU - Meschut, Gerson
AU - Masendorf, Lukas
AU - Esderts, Alfons
ID - 21152
SN - 978-3-86776-602-9
TI - Simulationsbasierte Betriebsfestigkeitsanalyse stanzgenieteter Bauteile
ER -
TY - CONF
AB - Overcoming a range of challenges that traditional therapy faces, VRET yields great potential for the treatment of phobias such as acrophobia, the fear of heights. We investigate this potential and present playful user-generated treatment (PUT), a novel game-based approach for VRET. Based on a requirement analysis consisting of a literature review and semi-structured interviews with professional therapists, we designed and implemented the PUT concept as a two-step VR game design. To validate our approach, we conducted two studies. (1) In a study with 31 non-acrophobic subjects, we investigated the effect of content creation on player experience, motivation and height perception, and (2) in an online survey, we collected feedback from professional therapists. Both studies reveal that the PUT approach is well applicable. In particular, the analysis of the user study shows that the design phase leads to increased interest and enjoyment without notably influencing affective measures during the exposure session. Our work can help guiding researchers and practitioners at the intersection of game design and exposure therapy.
AU - Alexandrovsky, Dmitry
AU - Volkmar, Georg
AU - Spliethöver, Maximilian
AU - Finke, Stefan
AU - Herrlich, Marc
AU - Döring, Tanja
AU - Smeddinck, Jan David
AU - Malaka, Rainer
ID - 21174
SN - 9781450380744
T2 - Proceedings of the Annual Symposium on Computer-Human Interaction in Play
TI - Playful User-Generated Treatment: A Novel Game Design Approach for VR Exposure Therapy
ER -
TY - THES
AU - Wolf, Verena
ID - 21205
TI - Service System Innovation: An Ambidexterity Perspective
ER -
TY - THES
AB - Die additive Fertigung mittels Laser Powderbed Fusion Verfahren (L-PBF) von Metallen wird zunehmend genutzt, um Funktionsbauteile endkonturnah zu fertigen. Die in der vor-liegenden Arbeit untersuchte Parameter- und Prozessoptimierung liefert einen Beitrag zur wirtschaftlichen Nutzung des L-PBF und zeigt, dass höhere Aufbauraten bei der ganzheit-lichen Betrachtung des Prozesses realisierbar sind.
Die Parameter- und Prozessoptimierung erfordert eine Untersuchung des Einflusses der Fertigungs- und Nachbearbeitungsparameter auf das erzeugte Volumen sowie auf die Mikrostruktur und die resultierenden Materialeigenschaften. Das Ziel der vorliegenden Arbeit ist die Entwicklung einer optimierten Prozessführung mit abschließender Bewer-tung der Wirtschaftlichkeit. Mit dem entwickelten Gesamtprozess wird eine um den Faktor 1,6 höhere Aufbaurate erzielt. Des Weiteren wird die Methodik zur Erarbeitung des opti-mierten Prozessfensters beschrieben, sodass die Herangehensweise auf weitere Werk-stoffe angewendet werden kann. Die mechanischen Eigenschaften werden für den stati-schen und dynamischen Lastfall untersucht und mit der Mikrostruktur korreliert. Abschlie-ßend wird die Prozessoptimierung zur Fertigung eines Demonstrators eingesetzt und wirtschaftlich validiert. Die Ergebnisse zeigen, dass durch das hier angewendete Vorge-hen eine Prozesszeitreduktion von 22,5% und eine Kostenreduktion von 11% realisiert werden kann.
AU - Ahlers, Dominik
ID - 21209
KW - Additive Manufacturing
KW - SLM
SN - 978-3844074246
TI - Parameter- und Prozessoptimierung für den additiven Fertigungsprozess im Pulverbett am Beispiel der Legierung Ti6Al4V
VL - 19
ER -
TY - CHAP
AU - Jakob, Eva Alexandra
AU - Hansjürgen, Lea
ED - Lutz, Eva
ED - Süß, Stefan
ID - 21216
T2 - Wettbewerbsfähigkeit von Start-ups, Erfolgreiche Düsseldorfer Unternehmen
TI - Volunteer World GmbH – Schildkrötenretten als Business Case
ER -
TY - JOUR
AB - The electrochemical nitrogen reduction reaction (NRR) to ammonia (NH3) is a promising alternative route for an NH3 synthesis at ambient conditions to the conventional high temperature and pressure Haber--Bosch process without the need for hydrogen gas. Single metal ions or atoms are attractive candidates for the catalytic activation of non-reactive nitrogen (N2), and for future targeted improvement of NRR catalysts, it is of utmost importance to get detailed insights into structure-performance relationships and mechanisms of N2 activation in such structures. Here, we report density functional theory studies on the NRR catalyzed by single Au and Fe atoms supported in graphitic C2N materials. Our results show that the metal atoms present in the structure of C2N are the reactive sites, which catalyze the aforesaid reaction by strong adsorption and activation of N2. We further demonstrate that a lower onset electrode potential is required for Fe--C2N than for Au--C2N. Thus, Fe--C2N is theoretically predicted to be a potentially better NRR catalyst at ambient conditions than Au--C2N owing to the larger adsorption energy of N2 molecules. Furthermore, we have experimentally shown that single sites of Au and Fe supported on nitrogen-doped porous carbon are indeed active NRR catalysts. However, in contrast to our theoretical results, the Au-based catalyst performed slightly better with a Faradaic efficiency (FE) of 10.1{\%} than the Fe-based catalyst with an FE of 8.4{\%} at −0.2 V vs. RHE. The DFT calculations suggest that this difference is due to the competitive hydrogen evolution reaction and higher desorption energy of ammonia.
AU - Sahoo, Sudhir K.
AU - Heske, Julian Joachim
AU - Antonietti, Markus
AU - Qin, Qing
AU - Oschatz, Martin
AU - Kühne, Thomas
ID - 21239
IS - 10
JF - ACS Applied Energy Materials
TI - Electrochemical N2 Reduction to Ammonia Using Single Au/Fe Atoms Supported on Nitrogen-Doped Porous Carbon
VL - 3
ER -
TY - JOUR
AB - In this work, a high-throughput screening of binary and ternary pnictide- and halide-based compounds is performed to identify promising p-type transparent conductors. Our investigation profits from the emergence of open-access databases based on ab-initio results. The band gap, stability, hole effective mass, and p-type dopability are employed for the materials screening and the validity of these descriptors is discussed. Among the final candidates, BaSiN2 is the most promising compound.
AU - Wiebeler, Hendrik
AU - Kormath Madam Raghupathy, Ramya
AU - Mirhosseini, S. Hossein
AU - Kühne, Thomas
ID - 21241
IS - 1
JF - Journal of Physics: Materials
TI - Virtual screening of nitrogen-, phosphorous- and halide-containing materials as p-type transparent conductors
VL - 4
ER -
TY - JOUR
AB - Digital data on tangible and intangible cultural assets is an essential part of daily life, communication and experience. It has a lasting influence on the perception of cultural identity as well as on the interactions between research, the cultural economy and society. Throughout the last three decades, many cultural heritage institutions have contributed a wealth of digital representations of cultural assets (2D digital reproductions of paintings, sheet music, 3D digital models of sculptures, monuments, rooms, buildings), audio-visual data (music, film, stage performances), and procedural research data such as encoding and annotation formats. The long-term preservation and FAIR availability of research data from the cultural heritage domain is fundamentally important, not only for future academic success in the humanities but also for the cultural identity of individuals and society as a whole. Up to now, no coordinated effort for professional research data management on a national level exists in Germany. NFDI4Culture aims to fill this gap and create a user-centered, research-driven infrastructure that will cover a broad range of research domains from musicology, art history and architecture to performance, theatre, film, and media studies.
The research landscape addressed by the consortium is characterized by strong institutional differentiation. Research units in the consortium's community of interest comprise university institutes, art colleges, academies, galleries, libraries, archives and museums. This diverse landscape is also characterized by an abundance of research objects, methodologies and a great potential for data-driven research. In a unique effort carried out by the applicant and co-applicants of this proposal and ten academic societies, this community is interconnected for the first time through a federated approach that is ideally suited to the needs of the participating researchers. To promote collaboration within the NFDI, to share knowledge and technology and to provide extensive support for its users have been the guiding principles of the consortium from the beginning and will be at the heart of all workflows and decision-making processes. Thanks to these principles, NFDI4Culture has gathered strong support ranging from individual researchers to high-level cultural heritage organizations such as the UNESCO, the International Council of Museums, the Open Knowledge Foundation and Wikimedia. On this basis, NFDI4Culture will take innovative measures that promote a cultural change towards a more reflective and sustainable handling of research data and at the same time boost qualification and professionalization in data-driven research in the domain of cultural heritage. This will create a long-lasting impact on science, cultural economy and society as a whole.
AU - Altenhöner, Reinhard
AU - Blümel, Ina
AU - Boehm, Franziska
AU - Bove, Jens
AU - Bicher, Katrin
AU - Bracht, Christian
AU - Brand, Ortrun
AU - Dieckmann, Lisa
AU - Effinger, Maria
AU - Hagener, Malte
AU - Hammes, Andrea
AU - Heller, Lambert
AU - Kailus, Angela
AU - Kohle, Hubertus
AU - Ludwig, Jens
AU - Münzmay, Andreas
AU - Pittroff, Sarah
AU - Razum, Matthias
AU - Röwenstrunk, Daniel
AU - Sack, Harald
AU - Simon, Holger
AU - Schmidt, Dörte
AU - Schrade, Torsten
AU - Walzel, Annika-Valeska
AU - Wiermann, Barbara
ID - 21257
JF - Research Ideas and Outcomes
SN - 2367-7163
TI - NFDI4Culture - Consortium for research data on material and immaterial cultural heritage
ER -
TY - CHAP
AU - Huhmann, Tobias
AU - Eilterts, Katja
AU - Schulte, Carsten
AU - Winkelnkemper, Felix
ID - 21268
T2 - Digitales Lernen in der Grundschule II: Aktuelle Trends in Forschung und Praxis
TI - Der Darstellungsflüchtigkeit im Geometrieunterricht durch digitale Unterstützung entgegenwirken
ER -
TY - JOUR
AU - Ködding, Patrick
AU - Reinhold, Jannik
AU - Scholtysik, Michel
AU - Dumitrescu, Roman
ID - 21269
IS - 2
JF - Journal of Systemics, Cybernetics and Informatics
SN - 1690-4524
TI - Consulting via Research in IMPRESS
VL - 18
ER -
TY - JOUR
AU - Drewel, Marvin
AU - Özcan, Leon
AU - Koldewey, Christian
AU - Gausemeier, Jürgen
ID - 21281
JF - Creativity and Innovation Management
SN - 0963-1690
TI - Pattern‐based development of digital platforms
ER -
TY - JOUR
AB - In recent times societal crises such as the coronavirus disease 2019 outbreak have given rise to a tension between formal ‘command and control’ and informal social media activated self-organising information and communication systems that are utilised for crisis management decision-making. Social media distrust affects the dissemination of disaster information as it entails shifts in media perception and participation but also changes in the way individuals and organisations make sense of information in critical situations. So far, a little considered notion in this domain is the concept of sense-giving. Originating from organisational theory, it is used to explain the mechanisms behind intentional information provision that fosters collective meaning creation. In our study, we seek to understand the potential impact of sense-giving from Twitter crisis communication generated during the Hurricane Harvey disaster event. Social network and content analyses performed with a dataset of 9,414,463 tweets yielded insights into how sense-giving occurs during a large-scale disaster event. Theoretically, we specified (1) perpetual sense-giving, which relies primarily on topical authority and frequency; as well as (2) intermittent sense-giving, which occurs from high value of message content and leverage of popularity, that is, retweets. Our findings emphasise the importance of information-rich actors in communication networks and the leverage of their influence in crises such as coronavirus disease 2019 to reduce social media distrust and facilitate sense-making.
AU - Mirbabaie, Milad
AU - Bunker, Deborah
AU - Stieglitz, Stefan
AU - Marx, Julian
AU - Ehnis, Christian
ID - 21282
JF - Journal of Information Technology
SN - 0268-3962
TI - Social media in times of crisis: Learning from Hurricane Harvey for the coronavirus disease 2019 pandemic response
ER -
TY - JOUR
AB - Peer-to-peer markets are especially suitable for the analysis of online ratings as they represent two-sided markets that match buyers to sellers and thus lead to reduced scope for opportunistic behavior. We decompose the online ratings by focusing on the customer’s decision-making process in a leading peer-to-peer ridesharing platform. Using data from the leading peer-to-peer ridesharing platform BlaBlaCar, we analyze 17,584 users registered between 2004 and 2014 and their online ratings focusing on the decomposition of the explicit determinants reflecting the variance of online ratings. We find clear evidence to suggest that a driver’s attitude towards music, pets, smoking, and conversation has a significantly positive influence on his received online ratings. However, we also show that the interaction of female drivers and their attitude towards pets has a significantly negative effect on average ratings.
AU - Kaimann, Daniel
ID - 21287
IS - 15
JF - Sustainability
SN - 2071-1050
TI - Behind the Review Curtain: Decomposition of Online Consumer Ratings in Peer-to-Peer Markets
VL - 12
ER -
TY - JOUR
AU - Stieglitz, Stefan
AU - Wilms, Konstantin
AU - Mirbabaie, Milad
AU - Hofeditz, Lennart
AU - Brenger, Bela
AU - López, Ania
AU - Rehwald, Stephanie
ID - 21306
JF - PLOS ONE
SN - 1932-6203
TI - When are researchers willing to share their data? – Impacts of values and uncertainty on open data in higher education
ER -
TY - CONF
AU - Hofeditz, L.
AU - Mirbabaie, Milad
AU - Stieglitz, S.
ID - 21315
T2 - Proceedings of the 31st Australasian Conference on Information Systems
TI - Virtually Extended Coworking Spaces – The Reinforcement of Social Proximity, Motivation and Knowledge Sharing Through ICT
ER -
TY - CONF
AU - Mirbabaie, Milad
AU - Marx, J.
AU - Braun, L.-M.
AU - Stieglitz, S.
ID - 21316
T2 - Proceedings of the 31st Australasian Conference on Information Systems
TI - Digital Detox – Mitigating Digital Overuse in Times of Remote Work and Social Isolation
ER -
TY - CONF
AU - Marx, J.
AU - Brünker, F.
AU - Mirbabaie, Milad
AU - Hochstrate, E.
ID - 21317
T2 - Proceedings of the 31st Australasian Conference on Information Systems
TI - ‘Conspiracy Machines’ - The Role of Social Bots during the COVID-19 ‘Infodemic’
ER -
TY - CONF
AU - Fromm, J.
AU - Mirbabaie, Milad
AU - Stieglitz, S.
ID - 21318
T2 - Proceedings of the Twenty-Eight European Conference on Information Systems
TI - A Systematic Review of Empirical Affordance Studies: Recommendations for Affordance Research in Information Systems
ER -
TY - CONF
AU - Mirbabaie, Milad
AU - Stieglitz, S.
AU - Lambertz, L.
ID - 21319
T2 - Proceedings of the 15th International Conference on Wirtschaftsinformatik
TI - The Usage of Twitter Data for Early Crisis Detection
ER -
TY - CONF
AU - Brünker, F.
AU - Marx, J.
AU - Ross, B.
AU - Mirbabaie, Milad
AU - Stieglitz, S.
ID - 21320
T2 - Proceedings of the 15. Internationaler Kongress Für Wirtschaftsinformatik
TI - ‘The Tireless Selling-Machine’ – Commercial Deployment of Social Bots during Black Friday Season on Twitter
ER -
TY - CONF
AU - Fromm, J.
AU - Mirbabaie, Milad
AU - Stieglitz, S.
ID - 21321
T2 - Proceedings of the 15. Internationaler Kongress Für Wirtschaftsinformatik
TI - The Effects of Virtual Reality Affordances and Constraints on Negative Group Effects during Brainstorming Sessions
ER -
TY - CONF
AU - Brünker, F.
AU - Wischnewski, M.
AU - Mirbabaie, Milad
AU - Meinert, J.
ID - 21322
T2 - Proceedings of the 51nd Hawaii International Conference on System Sciences
TI - The Role of Social Media during Social Movements – Observations from the #metoo Debate on Twitter
ER -
TY - GEN
AU - Chandrakar, Khushboo
ID - 21324
TI - Comparison of Feature Selection Techniques to Improve Approximate Circuit Synthesis
ER -
TY - CONF
AU - Pierenkemper, Christoph
AU - Gausemeier, Jürgen
ID - 21377
T2 - Proceeding of the ISPIM Connects
TI - Developing Strategies for Digital Transformation in SMEs with Maturity Models
ER -
TY - JOUR
AU - Dumitrescu, Roman
AU - Drewel, Marvin
AU - Falkowski, Tommy
ID - 21379
IS - 1-2
JF - ZWF, Zeitschrift für wirtschaftliche Fabrikplanung
TI - KI-Marktplatz: Das Ökosystem für Künstliche Intelligenz in der Produktentstehung
ER -
TY - CONF
AU - Anacker, Harald
AU - Dumitrescu, Roman
AU - Kharatyan, Aschot
AU - Lipsmeier, Andre
ID - 21380
T2 - Proceedings of the Design Society
TI - Pattern based systems engineering – application of solution patterns in the design of intelligent technical systems
ER -
TY - CONF
AU - Lipsmeier, Andre
AU - Kühn, Arno
AU - Joppen, Robert
AU - Dumitrescu, Roman
ID - 21381
IS - 88
T2 - Procedia CIRP
TI - Process for the development of a digital strategy
ER -
TY - CONF
AU - Japs, Segej
AU - Kharatyan, Aschot
AU - Tekaat, Julian
AU - Kaiser, Lydia
AU - Dumitrescu, Roman
ID - 21382
T2 - Proceedings of the Design Society
TI - Method for 3D-Environment Driven Domain Knowledge Elicitaion and System Model Generation
ER -
TY - CONF
AU - Jürgenhake, Christoph
AU - Anacker, Harald
AU - Dumitrescu, Roman
ID - 21383
T2 - Proceedings of the IEEE
TI - The digital Stadium – From future scenarios to technology and business model development
ER -
TY - CONF
AU - Röltgen, Daniel
AU - Dumitrescu, Roman
ID - 21384
IS - 91
T2 - Procedia CIRP
TI - Classification of Industrial Augmented Reality Use Cases
ER -
TY - CONF
AU - Hobscheidt, Daniela
AU - Kühn, Arno
AU - Dumitrescu, Roman
ID - 21385
IS - 91
T2 - Procedia CIRP
TI - Development of risk-optimized implementation paths for Industry 4.0 based on socio-technical pattern
ER -
TY - CONF
AU - Wortmann, Fabio
AU - Ellermann, Kai
AU - Kühn, Arno
AU - Dumitrescu, Roman
ID - 21386
IS - 91
T2 - Procedia CIRP
TI - Ideation for digital platforms based on a companies‘ ecosystem
ER -
TY - CONF
AU - Dyck, Florian
AU - Stöcklein, Jörg
AU - Eckertz, Daniel
AU - Dumitrescu, Roman
ID - 21387
T2 - Virtual, Augmented and Mixed Reality. Design and Interaction
TI - Mixed Mock-up – Development of an Interactive Augmented Reality System for Assembly Planning
ER -
TY - CONF
AU - Bretz, Lukas
AU - Koenemann, Ulf
AU - Anacker, Harald
AU - Dumitrescu, Roman
ID - 21388
IS - 91
T2 - Procedia CIRP
TI - A contribution to the design of organizational structures suitable for Systems Engineering
ER -
TY - CONF
AU - Hillebrand, Michael
AU - Greinert, Matthias
AU - Herzog, Otthein
AU - Dumitrescu, Roman
ID - 21389
T2 - Proceedings of the 2020 IEEE 15th International Conference of System of Systems Engineering (SoSE)
TI - Advanced Monkey Testing for connected autonomous systems
ER -
TY - CONF
AU - Hillebrand, Michael
AU - Lakhani, Mohsin
AU - Dumitrescu, Roman
ID - 21390
IS - 52
T2 - Procedia Manufacturing 52
TI - A design methodology for deep reinforcement learning for autonomous Systems
ER -
TY - CHAP
AU - Reinhart, Felix
AU - von Enzberg, Sebastian
AU - Kühn, Arno
AU - Dumitrescu, Roman
ED - Beyerer, Jürgen
ED - Maier, Alexander
ED - Niggemann, Oliver
ID - 21391
T2 - Machine Learning for Cyber Physical Systems. Technologien für die intelligente Automation (Technologies for Intelligent Automation)
TI - Machine Learning for Process-X: A Taxonomy
VL - 11
ER -
TY - CONF
AU - Henkenjohann, Mark
AU - Joppen, Robert
AU - Köchling, Daniel
AU - von Enzberg, Sebastian
AU - Kühn, Arno
AU - Dumitrescu, Roman
ID - 21392
T2 - Procedia CIRP
TI - Identification and specification of standard modules in production for a material flow simulation
ER -
TY - CONF
AU - Grote, Eva-Maria
AU - Pfeifer, Stefan
AU - Röltgen, Daniel
AU - Kühn, Arno
AU - Dumitrescu, Roman
ID - 21394
T2 - Proceedings of the 2020 IEEE International Symposium on Systems Engineering
TI - Towards defining role models in Advanced Systems Engineering
ER -
TY - CHAP
AU - Dumitrescu, Roman
AU - Tschirner, Christian
AU - Bansmann, Michael
ED - Maier, Günter
ED - Engels, Gregor
ED - Steffen, Eckhard
ID - 21395
T2 - Handbuch Gestaltung digitaler und vernetzter Arbeitswelten
TI - Systems Engineering als Grundlage der Gestaltung digitaler Arbeitswelten in der Produktentstehung
ER -
TY - CHAP
AB - 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.
AU - Jager, Tibor
AU - Niehues, David
ID - 21396
KW - Admissible hash functions
KW - Verifiable random functions
KW - Error-correcting codes
KW - Provable security
SN - 0302-9743
T2 - Lecture Notes in Computer Science
TI - On the Real-World Instantiability of Admissible Hash Functions and Efficient Verifiable Random Functions
ER -
TY - JOUR
AB - 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.
AU - Binder, Sebastian
AU - Lorenz, Johannes
ID - 21403
IS - 3
JF - Der Konzern
TI - Update zur grunderwerbsteuerlichen Konzernklausel vor dem Hintergrund der jüngsten BFH-Rechtsprechung
VL - 18
ER -
TY - GEN
AB - 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.
AU - Blaufus, Kay
AU - Chirvi, Malte
AU - Huber, Hans-Peter
AU - Maiterth, Ralf
AU - Sureth-Sloane, Caren
ID - 21406
TI - Tax Misperception and Its Effects on Decision Making - a Literature Review
VL - No. 39
ER -
TY - GEN
AU - Bornemann, Tobias
AU - Schipp, Adrian
AU - Sureth-Sloane, Caren
ID - 21407
TI - 2018/2019 Umfrage zur Steuerkomplexität in deutschen Finanzverwaltungen
ER -
TY - CHAP
AB - 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.
AU - Diller, Markus
AU - Lorenz, Johannes
AU - Meier, David
ED - Neufeld, Janis S.
ED - Buscher, Udo
ED - Lasch, Rainer
ED - Möst, Dominik
ED - Schönberger, Jörn
ID - 21408
SN - 978-3-030-48439-2
T2 - Operations Research Proceedings 2019
TI - Tax Avoidance and Social Control
ER -
TY - GEN
AB - 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.
AU - Eberhartinger, Eva
AU - Speitmann, Raffael
AU - Sureth-Sloane, Caren
ID - 21409
TI - Real Effects of Public Country-by-Country Reporting and the Firm Structure of European Banks
VL - #2020-01
ER -
TY - GEN
AB - 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.
AU - Eberhartinger, Eva
AU - Speitmann, Raffael
AU - Sureth-Sloane, Caren
ID - 21410
TI - How Does Trust Affect Concessionary Behavior in Tax Bargaining?
VL - No. 41
ER -
TY - GEN
AB - 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.
AU - Flagmeier, Vanessa
AU - Müller, Jens
AU - Sureth-Sloane, Caren
ID - 21411
TI - When Do Firms Highlight Their Effective Tax Rate?
VL - No. 37
ER -
TY - JOUR
AU - Heile, Vanessa
AU - Huber, Hans-Peter
AU - Maiterth, Ralf
AU - Sureth-Sloane, Caren
ID - 21412
IS - 42
JF - Deutsches Steuerrecht
TI - Steuerliche Maßnahmen als nützliches Mittel zur Bewältigung der Corona-Krise? - Ergebnisse einer Unternehmensbefragung
VL - 58
ER -
TY - GEN
AU - Heile, Vanessa
AU - Huber, Hans-Peter
AU - Maiterth, Ralf
AU - Sureth-Sloane, Caren
ID - 21414
TI - Umfrage: Steuerliche Verwaltungskosten, steuerliche Corona-Soforthilfemaßnahmen und Investitionen in der Krise
ER -
TY - JOUR
AB - 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.
AU - Hoppe, Thomas
ID - 21415
IS - 4
JF - Australian Tax Forum
TI - Tax Complexity in Australia – a Survey-Based Comparison to the OECD Average
VL - 35
ER -
TY - GEN
AB - 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.
AU - Hoppe, Thomas
ID - 21416
TI - Tax Complexity in Australia - A Survey-Based Comparison to the OECD Average
VL - No. 14
ER -
TY - GEN
AU - Hoppe, Thomas
AU - Schanz, Deborah
AU - Schipp, Adrian
AU - Siegel, Felix
AU - Sturm, Susann
AU - Sureth-Sloane, Caren
ID - 21417
TI - 2018 Global MNC Tax Complexity Survey
ER -
TY - GEN
AB - 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.
AU - Hoppe, Thomas
AU - Schanz, Deborah
AU - Sturm, Susann
AU - Sureth-Sloane, Caren
ID - 21418
TI - Measuring Tax Complexity Across Countries: A Survey Study on MNCs
VL - No. 5
ER -
TY - GEN
AB - 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.
AU - Hoppe, Thomas
AU - Schanz, Deborah
AU - Sturm, Susann
AU - Sureth-Sloane, Caren
AU - Voget, Johannes
ID - 21419
TI - The Relation between Tax Complexity and Foreign Direct Investments: Evidence Across Countries
VL - No. 13
ER -
TY - JOUR
AU - Sureth-Sloane, Caren
ID - 21422
IS - 5
JF - AWV-Informationen
TI - Steuerkomplexität als Standortfaktor. So komplex ist das Steuersystem in Deutschland
ER -
TY - GEN
AB - 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.
AU - Henke, Luca-Sebastian
ID - 21432
TI - Evaluation of a ReconOS-ROS Combination based on a Video Processing Application
ER -
TY - CONF
AU - Japs, Segej
AU - Kharatyan, Aschot
AU - Kaiser, Lydia
AU - Dumitrescu, Roman
ID - 21438
T2 - Proceedings of the 16th International Design Conference (DESIGN 2020)
TI - CONSENS 3D: Method for 3D-Environment Driven Domain Knowledge Elicitaion and System Model Generation
ER -
TY - CONF
AU - Pfeifer, Stefan
AU - Seidenberg, Tobias
AU - Jürgenhake, Christoph
AU - Anacker, Harald
AU - Dumitrescu, Roman
ID - 21439
T2 - Procedia Manufacturing
TI - Towards a modular product architecture for electric ferries using Model- Based Systems Engineering
ER -
TY - CONF
AU - Wiecher, Carsten
AU - Japs, Sergej
AU - Kaiser, Lydia
AU - Greenyer, Joel
AU - Wolff, Carsten
AU - Dumitrescu, Roman
ID - 21440
T2 - ACM/IEEE 23rd International Conference on Model Driven Engineering Languages and Systems (MODELS ’20 Companion)
TI - Scenarios in the Loop: Integrated Requirements Analysis and Automotive System Validation
ER -
TY - CONF
AU - Yee, Jingye
AU - Low, Cheng Yee
AU - Ong, P.
AU - Soh, WS
AU - Hannapiah, Fazah Akhtar
AU - Zakaria, NC
AU - von Enzberg, Sebastian
AU - Asmar, Laban
AU - Dumitrescu, Roman
ID - 21441
T2 - IOP Conference Series: Materials Science and Engineering
TI - Verification of Mathematical Model for Upper Limb Spasticity with Clinical Data
ER -
TY - JOUR
AU - Heggemann, Thomas
AU - Homberg, Werner
AU - Sapli, Hüseyin
ID - 21444
JF - Procedia Manufacturing
SN - 2351-9789
TI - Combined Curing and Forming of Fiber Metal Laminates
ER -
TY - CONF
AU - Anjorin, Anthony
AU - Weidmann, Nils
AU - Oppermann, Robin
AU - Fritsche, Lars
AU - Schürr, Andy
ED - Syriani, Eugene
ED - Sahraoui, Houari
ED - de Lara, Juan
ED - Abrahao, Silvia
ID - 21480
SN - 9781450370196
T2 - Proceedings of the 23rd ACM/IEEE International Conference on Model Driven Engineering Languages and Systems, MODELS 2020
TI - Automating test schedule generation with domain-specific languages
ER -
TY - CONF
AU - Weidmann, Nils
AU - Fritsche, Lars
AU - Anjorin, Anthony
ED - Lämmel, Ralf
ED - Tratt, Laurcence
ED - de Lara, Juan
ID - 21481
SN - 9781450381765
T2 - Proceedings of the 13th ACM SIGPLAN International Conference on Software Language Engineering, SLE 2020
TI - A search-based and fault-tolerant approach to concurrent model synchronisation
ER -
TY - CONF
AU - Weidmann, Nils
AU - Anjorin, Anthony
AU - Cheney, James
ED - Hoffmann, Berthold
ED - Minas, Mark
ID - 21482
SN - 2075-2180
T2 - Proceedings of the Eleventh International Workshop on Graph Computation Models, GCM@STAF 2020
TI - VICToRy: Visual Interactive Consistency Management in Tolerant Rule-based Systems
ER -
TY - CONF
AU - Jovanovikj, Ivan
AU - Weidmann, Nils
AU - Yigitbas, Enes
AU - Anjorin, Anthony
AU - Sauer, Stefan
AU - Engels, Gregor
ED - Babur, Önder
ED - Denil, Joachim
ED - Vogel-Heuser, Birgit
ID - 21483
SN - 1865-0929
T2 - Proceedings of the First International Conference on Systems Modelling and Management, ICSMM 2020
TI - A Model-Driven Mutation Framework for Validation of Test Case Migration
ER -
TY - GEN
ED - Bernijazov, Ruslan
ED - Özcan, Leon
ED - Dumitrescu, Roman
ID - 21486
IS - 122
T2 - ERCIM News
TI - AI Marketplace – The Ecosystem for Artificial Intelligence in Product Creation
ER -
TY - CONF
AU - Sapli, Hüseyin
AU - Heggemann, Thomas
AU - Homberg, Werner
ID - 21522
TI - Combined Curing and Deep Drawing of Fiber Metal Laminates to Spherical Hybrid Components
ER -
TY - CONF
AU - Bengs, Viktor
AU - Hüllermeier, Eyke
ID - 21534
T2 - International Conference on Machine Learning
TI - Preselection Bandits
ER -
TY - GEN
AB - 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.
AU - Bengs, Viktor
AU - Hüllermeier, Eyke
ID - 21536
T2 - arXiv:2011.00813
TI - Multi-Armed Bandits with Censored Consumption of Resources
ER -
TY - JOUR
AU - Ortmann, Regina
AU - Pelster, Matthias
AU - Wengerek, Sascha Tobias
ID - 21539
JF - Finance Research Letters
SN - 1544-6123
TI - COVID-19 and investor behavior
ER -
TY - CONF
AB - 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.
AU - Lange, Sven
AU - Schroder, Dominik
AU - Hedayat, Christian
AU - Hangmann, Christian
AU - Otto, Thomas
AU - Hilleringmann, Ulrich
ID - 21541
KW - Near-Field Scanner
KW - Near-Field to Far-Field Transformation
KW - Directivity
KW - Surface Equivalence Theorem
KW - Huygens’ Box
SN - 2325-0364
T2 - 2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE
TI - Investigation of the Surface Equivalence Principle on a Metal Surface for a Near-Field to Far-Field Transformation by the NFS3000
ER -
TY - CHAP
AB - 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.
AU - Schröder, Dominik
AU - Lange, Sven
AU - Hangmann, Christian
AU - Hedayat, Christian
ID - 21542
KW - Huygens' box
KW - NF-to-FF transformation
KW - efficient FF radiation model
KW - FF behaviour
KW - EMI assessment
KW - PCB
KW - near-field measurements
KW - efficient radiation model
KW - far-field behaviour
KW - RF design process
KW - far-field prediction
KW - Huygens'box principle
KW - fullwave simulation
KW - electronic system radiation
KW - equivalent radiation source
KW - electromagnetic simulation tool
KW - near-field scan data
KW - EM compatibility failure reduction
SN - 9781839530494
T2 - Tensorial Analysis of Networks (TAN) Modelling for PCB Signal Integrity and EMC Analysis
TI - Far-field prediction combining simulations with near-field measurements for EMI assessment of PCBs
ER -
TY - CHAP
AU - Berger, Thomas
AU - Lanza, Lukas Johannes
ID - 21579
SN - 2199-7497
T2 - Progress in Differential-Algebraic Equations II
TI - Observers for Differential-Algebraic Systems with Lipschitz or Monotone Nonlinearities
ER -
TY - CONF
AU - Gatica, Carlos Paiz
AU - Platzner, Marco
ID - 21584
SN - 2522-8579
T2 - Machine Learning for Cyber Physical Systems (ML4CPS 2017)
TI - Adaptable Realization of Industrial Analytics Functions on Edge-Devices using Reconfigurable Architectures
ER -
TY - JOUR
AU - Meschede, Henning
ID - 21608
JF - Renewable Energy
SN - 0960-1481
TI - Analysis on the demand response potential in hotels with varying probabilistic influencing time-series for the Canary Islands
ER -
TY - JOUR
AU - Graf-Schlattmann, Marcel
AU - Meister, Dorothee M.
AU - Oevel, Gudrun
AU - Wilde, Melanie
ID - 17331
IS - 1
JF - Forschungsperspektiven auf Digitalisierung in Hochschulen, Zeitschrift für Hochschulentwicklung
TI - Kollektive Veränderungsbereitschaft als zentraler Erfolgsfaktor von Digitalisierungsprozessen an Hochschulen
VL - 15
ER -
TY - JOUR
AU - Hampel, Uwe
AU - Schubert, Markus
AU - Döß, Alexander
AU - Sohr, Johanna
AU - Vishwakarma, Vineet
AU - Repke, Jens‐Uwe
AU - Gerke, Sören J.
AU - Leuner, Hannes
AU - Rädle, Matthias
AU - Kapoustina, Viktoria
AU - Schmitt, Lucas
AU - Grünewald, Marcus
AU - Brinkmann, Jost H.
AU - Plate, Dominik
AU - Kenig, Eugeny
AU - Lutters, Nicole
AU - Bolenz, Lukas
AU - Buckmann, Felix
AU - Toye, Dominique
AU - Arlt, Wolfgang
AU - Linder, Thomas
AU - Hoffmann, Rainer
AU - Klein, Harald
AU - Rehfeldt, Sebastian
AU - Winkler, Thomas
AU - Bart, Hans‐Jörg
AU - Wirz, Dominic
AU - Schulz, Jonas
AU - Scholl, Stephan
AU - Augustin, Wolfgang
AU - Jasch, Katharina
AU - Schlüter, Florian
AU - Schwerdtfeger, Natalie
AU - Jahnke, Stefan
AU - Jupke, Andreas
AU - Kabatnik, Christoph
AU - Braeuer, Andreas Siegfried
AU - D'Auria, Mirko
AU - Runowski, Thomas
AU - Casal, Maria Francisco
AU - Becker, Karsten
AU - David, Anna‐Lena
AU - Górak, Andrzej
AU - Skiborowski, Mirko
AU - Groß, Kai
AU - Qammar, Hina
ID - 17335
JF - Chemie Ingenieur Technik
SN - 0009-286X
TI - Recent Advances in Experimental Techniques for Flow and Mass Transfer Analyses in Thermal Separation Systems
VL - 92
ER -
TY - CHAP
AU - Jazayeri, Bahar
AU - Schwichtenberg, Simon
AU - Küster, Jochen
AU - Zimmermann, Olaf
AU - Engels, Gregor
ID - 17337
SN - 0302-9743
T2 - Advanced Information Systems Engineering
TI - Modeling and Analyzing Architectural Diversity of Open Platforms
ER -
TY - CHAP
AB - 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.
AU - Bäumer, Frederik Simon
AU - Kersting, Joschka
AU - Buff, Bianca
AU - Geierhos, Michaela
ED - Audrius, Lopata
ED - Rita, Butkienė
ED - Daina, Gudonienė
ED - Vilma, Sukackė
ID - 17347
T2 - Information and Software Technologies
TI - Tag Me If You Can: Insights into the Challenges of Supporting Unrestricted P2P News Tagging
VL - 1283
ER -
TY - CONF
AU - Kucklick, Jan-Peter
AU - Müller, Oliver
ID - 17348
T2 - Symposium on Statistical Challenges in Electronic Commerce Research (SCECR)
TI - Location, location, location: Satellite image-based real-estate appraisal
ER -
TY - GEN
AU - Grabo, Matti
AU - Staggenborg, Christoph
AU - Kenig, Eugeny
ID - 17349
TI - Modellierung und Optimierung makroverkapselter Latentwärmespeicherelemente für ein luftgeführtes Wärmespeichersystem
ER -
TY - CHAP
AU - Moritzer, Elmar
AU - Hüttner, Matthias
AU - Henning, Bernd
AU - Webersen, Manuel
ED - Hopmann, Christian
ED - Dahlmann, Rainer
ID - 17352
SN - 9783662608081
T2 - Advances in Polymer Processing 2020
TI - The Influence of Hydrothermal Aging on the Material Properties of Continuous Fiber-Reinforced Thermoplastics and its Non-Destructive Characterization
ER -
TY - JOUR
AB - 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.
AU - Witschen, Linus Matthias
AU - Wiersema, Tobias
AU - Platzner, Marco
ID - 17358
IS - 9
JF - IEEE Transactions On Very Large Scale Integration Systems
KW - Approximate circuit synthesis
KW - approximate computing
KW - error metrics
KW - formal verification
KW - proof-carrying hardware
SN - 1063-8210
TI - Proof-carrying Approximate Circuits
VL - 28
ER -
TY - JOUR
AB - 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.
AU - Alberto Oliveira de Souza Junior, Carlos
AU - Bispo, João
AU - Cardoso, João M. P.
AU - Diniz, Pedro C.
AU - Marques, Eduardo
ID - 17359
JF - Electronics
KW - pc2-harp-ressources
SN - 2079-9292
TI - Exploration of FPGA-Based Hardware Designs for QR Decomposition for Solving Stiff ODE Numerical Methods Using the HARP Hybrid Architecture
ER -
TY - JOUR
AU - Johansson-Pajala, Rose-Marie
AU - Thommes, Kirsten
AU - Hoppe, Julia Amelie
AU - Tuisku, Outi
AU - Hennala, Lea
AU - Pekkarinen, Satu
AU - Melkas, Helina
AU - Gustafsson, Christine
ID - 17361
JF - International Journal of Social Robotics
TI - Care Robot Orientation: What, Who and How? Potential Users` Perceptions
ER -
TY - JOUR
AU - Hoppe, Julia Amelie
AU - Johansson-Pajala, Rose-Marie
AU - Gustafsson, Christine
AU - Melkas, Helinä
AU - Tusku, Outi
AU - Pekkarinen, Satu
AU - Hennala, Lea
ID - 17366
JF - Industrie 4.0 Management
SN - 2364-9208
TI - Technologieorientierung zu Assistenzrobotik – Welche Akzeptanz besteht bei der Einführung von Assistenzrobotik für die Pflege älterer Menschen?
VL - 2
ER -
TY - CHAP
AU - Hoppe, Julia Amelie
AU - Johansson-Pajala, Rose-Marie
AU - Gustafsson, Christine
AU - Melkas, Helinä
AU - Tusku, Outi
AU - Pekkarinen, Satu
AU - Hennala, Lea
AU - Thommes, Kirsten
ED - Haltaufderheide, Joschka
ED - Hovemann, Johanna
ED - Vollmann, Jochen
ID - 17367
T2 - Aging between Participation and Simulation - Ethical Dimensions of Socially Assistive Technologies in elderly care
TI - Assistive robots in care: Expectations and perceptions of older people
ER -
TY - CONF
AU - Vorbohle, Christian
AU - Szopinski, Daniel
AU - Kundisch, Dennis
ED - Shishkov, B.
ID - 17368
SN - 978-3-030-52305-3
TI - Business Model Dependencies: Towards conceptualizing dependencies for extending modeling languages for business models
VL - 391
ER -
TY - JOUR
AU - Ho, Nam
AU - Kaufmann, Paul
AU - Platzner, Marco
ID - 17369
JF - International Journal of Hybrid intelligent Systems
TI - Evolution of Application-Specific Cache Mappings
ER -
TY - CONF
AB - 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.
AU - Castenow, Jannik
AU - Feldkord, Björn
AU - Knollmann, Till
AU - Malatyali, Manuel
AU - Meyer auf der Heide, Friedhelm
ID - 17370
KW - Online Multi-Commodity Facility Location
KW - Competitive Ratio
KW - Online Optimization
KW - Facility Location Problem
SN - 9781450369350
T2 - Proceedings of the 32nd ACM Symposium on Parallelism in Algorithms and Architectures
TI - The Online Multi-Commodity Facility Location Problem
ER -
TY - CONF
AU - Castenow, Jannik
AU - Kling, Peter
AU - Knollmann, Till
AU - Meyer auf der Heide, Friedhelm
ID - 17371
SN - 9781450369350
T2 - Proceedings of the 32nd ACM Symposium on Parallelism in Algorithms and Architectures
TI - Brief Announcement: A Discrete and Continuous Study of the Max-Chain-Formation Problem: Slow Down to Speed up
ER -
TY - JOUR
AU - Zhou, Jiaqi
AU - Khazaei, Mohammad
AU - Ranjbar, Ahmad
AU - Wang, Vei
AU - Kühne, Thomas D.
AU - Ohno, Kaoru
AU - Kawazoe, Yoshiyuki
AU - Liang, Yunye
ID - 17375
JF - J. Mater. Chem. C
TI - Modulation of nearly free electron states in hydroxyl-functionalized MXenes: a first-principles study
VL - 8
ER -
TY - JOUR
AU - Kumar Sahoo, Sudhir
AU - Heske, Julian Joachim
AU - Azadi, Sam
AU - Zhang, Zhenzhe
AU - V Tarakina, Nadezda
AU - Oschatz, Martin
AU - Z. Khaliullin, Rustam
AU - Antonietti, Markus
AU - Kühne, Thomas
ID - 17379
IS - 1
JF - Scientific Reports
TI - On the Possibility of Helium Adsorption in Nitrogen Doped Graphitic Materials
VL - 10
ER -
TY - JOUR
AU - Elgabarty, Hossam
AU - Kampfrath, Tobias
AU - Bonthuis, Douwe Jan
AU - Balos, Vasileios
AU - Kaliannan, Naveen Kumar
AU - Loche, Philip
AU - Netz, Roland R.
AU - Wolf, Martin
AU - K{\, Thomas D.
AU - Sajadi, Mohsen
ID - 17381
IS - 17
JF - Science Advances
TI - Energy transfer within the hydrogen bonding network of water following resonant terahertz excitation
VL - 6
ER -
TY - JOUR
AU - Rengaraj, Varadarajan
AU - Lass, Michael
AU - Plessl, Christian
AU - Kühne, Thomas D.
ID - 17382
IS - 2
JF - Computation
SN - 2079-3197
TI - Accurate Sampling with Noisy Forces from Approximate Computing
VL - 8
ER -
TY - JOUR
AU - Elgabarty, Hossam
AU - Kühne, Thomas D.
ID - 17384
JF - Phys. Chem. Chem. Phys.
TI - Tumbling with a limp: local asymmetry in water's hydrogen bond network and its consequences
VL - 22
ER -
TY - JOUR
AU - Kühne, Thomas D.
AU - Iannuzzi, Marcella
AU - Del Ben, Mauro
AU - Rybkin, Vladimir V.
AU - Seewald, Patrick
AU - Stein, Frederick
AU - Laino, Teodoro
AU - Khaliullin, Rustam Z.
AU - Schütt, Ole
AU - Schiffmann, Florian
AU - al., et
ID - 17386
IS - 19
JF - The Journal of Chemical Physics
SN - 1089-7690
TI - CP2K: An electronic structure and molecular dynamics software package - Quickstep: Efficient and accurate electronic structure calculations
VL - 152
ER -