@article{35572, author = {{Schluter, Nils and Darup, Moritz Schulze}}, issn = {{0018-9286}}, journal = {{IEEE Transactions on Automatic Control}}, keywords = {{Electrical and Electronic Engineering, Computer Science Applications, Control and Systems Engineering}}, number = {{10}}, pages = {{5610--5613}}, publisher = {{Institute of Electrical and Electronics Engineers (IEEE)}}, title = {{{On the Stability of Linear Dynamic Controllers With Integer Coefficients}}}, doi = {{10.1109/tac.2021.3131126}}, volume = {{67}}, year = {{2021}}, } @article{53268, author = {{Soleymani, Mohammad and Santamaria, Ignacio and Schreier, Peter J.}}, issn = {{2169-3536}}, journal = {{IEEE Access}}, keywords = {{General Engineering, General Materials Science, General Computer Science}}, pages = {{96948--96963}}, publisher = {{Institute of Electrical and Electronics Engineers (IEEE)}}, title = {{{Distributed Algorithms for Spectral and Energy-Efficiency Maximization of K-User Interference Channels}}}, doi = {{10.1109/access.2021.3094976}}, volume = {{9}}, year = {{2021}}, } @article{45844, abstract = {{Abstract Abductive reasoning is a non-monotonic formalism stemming from the work of Peirce. It describes the process of deriving the most plausible explanations of known facts. Considering the positive version, asking for sets of variables as explanations, we study, besides the problem of wether there exists a set of explanations, two explanation size limited variants of this reasoning problem (less than or equal to, and equal to a given size bound). In this paper, we present a thorough two-dimensional classification of these problems: the first dimension is regarding the parameterized complexity under a wealth of different parameterizations, and the second dimension spans through all possible Boolean fragments of these problems in Schaefer’s constraint satisfaction framework with co-clones (T. J. Schaefer. The complexity of satisfiability problems. In Proceedings of the 10th Annual ACM Symposium on Theory of Computing, May 1–3, 1978, San Diego, California, USA, R.J. Lipton, W.A. Burkhard, W.J. Savitch, E.P. Friedman, A.V. Aho eds, pp. 216–226. ACM, 1978). Thereby, we almost complete the parameterized complexity classification program initiated by Fellows et al. (The parameterized complexity of abduction. In Proceedings of the Twenty-Sixth AAAI Conference on Articial Intelligence, July 22–26, 2012, Toronto, Ontario, Canada, J. Homann, B. Selman eds. AAAI Press, 2012), partially building on the results by Nordh and Zanuttini (What makes propositional abduction tractable. Artificial Intelligence, 172, 1245–1284, 2008). In this process, we outline a fine-grained analysis of the inherent parameterized intractability of these problems and pinpoint their FPT parts. As the standard algebraic approach is not applicable to our problems, we develop an alternative method that makes the algebraic tools partially available again.}}, author = {{Mahmood, Yasir and Meier, Arne and Schmidt, Johannes}}, issn = {{0955-792X}}, journal = {{Journal of Logic and Computation}}, keywords = {{Logic, Hardware and Architecture, Arts and Humanities (miscellaneous), Software, Theoretical Computer Science}}, number = {{1}}, pages = {{266--296}}, publisher = {{Oxford University Press (OUP)}}, title = {{{Parameterized complexity of abduction in Schaefer’s framework}}}, doi = {{10.1093/logcom/exaa079}}, volume = {{31}}, year = {{2021}}, } @article{37822, author = {{Han, Daxin and Yang, Keke and Meschut, Gerson}}, issn = {{0924-0136}}, journal = {{Journal of Materials Processing Technology}}, keywords = {{Industrial and Manufacturing Engineering, Metals and Alloys, Computer Science Applications, Modeling and Simulation, Ceramics and Composites}}, publisher = {{Elsevier BV}}, title = {{{Mechanical joining of glass fibre reinforced polymer (GFRP) through an innovative solid self-piercing rivet}}}, doi = {{10.1016/j.jmatprotec.2021.117182}}, volume = {{296}}, year = {{2021}}, } @article{37146, abstract = {{AbstractOrganizations increasingly introduce collaborative technologies in form of virtual assistants (VAs) to save valuable resources, especially when employees are assisted with work-related tasks. However, the effect of VAs on virtual teams and collaboration remains uncertain, particularly whether employees show social loafing (SL) tendencies, i.e., applying less effort for collective tasks compared to working alone. While extant research indicates that VAs collaboratively working in teams exert greater results, less is known about SL in virtual collaboration and how responsibility attribution alters. An online experiment with N = 102 was conducted in which participants were assisted by a VA in solving a task. The results indicate SL tendencies in virtual collaboration with VAs and that participants tend to cede responsibility to the VA. This study makes a first foray and extends the information systems (IS) literature by analyzing SL and responsibility attribution thus updates our knowledge on virtual collaboration with VAs.}}, author = {{Stieglitz, Stefan and Mirbabaie, Milad and Möllmann, Nicholas R. J. and Rzyski, Jannik}}, issn = {{1387-3326}}, journal = {{Information Systems Frontiers}}, keywords = {{Computer Networks and Communications, Information Systems, Theoretical Computer Science, Software}}, number = {{3}}, pages = {{745--770}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Collaborating with Virtual Assistants in Organizations: Analyzing Social Loafing Tendencies and Responsibility Attribution}}}, doi = {{10.1007/s10796-021-10201-0}}, volume = {{24}}, year = {{2021}}, } @article{37144, abstract = {{AbstractArtificial intelligence (AI) is being increasingly integrated into enterprises to foster collaboration within humanmachine teams and assist employees with work-related tasks. However, introducing AI may negatively impact employees’ identifications with their jobs as AI is expected to fundamentally change workplaces and professions, feeding into individuals’ fears of being replaced. To broaden the understanding of the AI identity threat, the findings of this study reveal three central predictors for AI identity threat in the workplace: changes to work, loss of status position, and AI identity predicting AI identity threat in the workplace. This study enriches information systems literature by extending our understanding of collaboration with AI in the workplace to drive future research in this field. Researchers and practitioners understand the implications of employees’ identity when collaborating with AI and comprehend which factors are relevant when introducing AI in the workplace.}}, author = {{Mirbabaie, Milad and Brünker, Felix and Möllmann Frick, Nicholas R. J. and Stieglitz, Stefan}}, issn = {{1019-6781}}, journal = {{Electronic Markets}}, keywords = {{Management of Technology and Innovation, Marketing, Computer Science Applications, Economics and Econometrics, Business and International Management}}, number = {{1}}, pages = {{73--99}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{The rise of artificial intelligence – understanding the AI identity threat at the workplace}}}, doi = {{10.1007/s12525-021-00496-x}}, volume = {{32}}, year = {{2021}}, } @article{37445, abstract = {{A prerequisite for child reading support at school is adequate assessment. Embedding (repeated) assessment into daily teaching routine is often challenging for teachers in terms of time and organization. The use of digital tools can help teachers in the assessment process (in preparation, evaluation, documentation, etc.). A digital assessment tool (Graz Reading Comprehension test: GraLeV), focusing on assessing reading comprehension skills in Grades 3 and 4 is currently being developed in Austria. This reading assessment covers reading comprehension at the word, sentence, and text level. Text level is assessed via two subtests (Subtest I: presentation of nonsense-stories and corresponding questions, and Subtest II: maze selection). The other levels consist of one subtest each. This paper focusses on the subtests at text level. More specifically, the paper reports the results of two studies. Study 1 describes the development phases and the first piloting of these two subtests (data collection: 10/2019-12/2019). Testing 273 students with preliminary versions of the subtests (Subtest I: 30 items, Subtest II: 60 items) produced information on (a) item difficulty, (b) item discriminatory power, and (c) time limits for future speed testing. Items not meeting the required quality criteria were excluded. The final version of Subtest I consists of 16 questions referring to eight different, short, nonsense-texts. Its testing time (without instructions) is three minutes. The final version of the Subtest II consists of 2 texts each with 15 maze selections (30 items) and testing time is 100 seconds. The internal consistency is found to be good for Subtest I (α=.87) and Subtest II (α=.78 to .80). Study 2 reports on testing for validity and retest-reliability (data collection: 09/2020-11/2020). Student scores in another reading comprehension test, together with teacher assessments of reading comprehension, were used to assess congruent validity. Divergent validity was assessed using teacher assessments of mathematical and socio-emotional skills. As expected, the correlations with the congruent measures were higher than those with the divergent measures. A subsample was tested twice with the GraLeV. Retest-reliability was acceptable for Subtest II. However, the scores obtained at time 2 were higher compared to those at time 1 in both subtests. This is probably the result of increased student familiarity with the digital device and the digital test environment at time 2. The results are discussed in the light of teachers’ needs for standardized digital assessments in order to facilitate the tailoring of student reading support.  }}, author = {{Seifert, Susanne and Paleczek, Lisa}}, issn = {{1479-4403}}, journal = {{Electronic Journal of e-Learning}}, keywords = {{Computer Science Applications, Education}}, number = {{5}}, pages = {{pp336--348}}, publisher = {{Academic Conferences International Ltd}}, title = {{{Digitally Assessing Text Comprehension in Grades 3-4: Test Development and Validation}}}, doi = {{10.34190/ejel.19.5.2467}}, volume = {{19}}, year = {{2021}}, } @article{37443, abstract = {{AbstractThe range of teaching materials now available is becoming increasingly diverse. Despite this, however, the use and influence of textbooks in teaching still remains very high. When instructing reading comprehension, teachers often use textbooks as the basis for teaching in language lessons. Establishing a good match between textbooks and the skills to be acquired is therefore essential. In this paper, I investigate whether textbooks used in Austrian schools can adequately support the teaching of reading comprehension skills. Since reading comprehension is the basis for acquiring knowledge in all subjects, science textbooks are examined in addition to (German) language lesson textbooks. Thus, the content pages of four language textbooks and four science textbooks for fourth and sixth grade were analysed in terms of five different categories, i.e. general structural setup, learning goals, text types, text structures, and activities. The results reveal clear variations with respect to learning goals in language textbooks. For example, the extent to which reading comprehension is addressed ranges from 13.64 to 69.70%, depending on the book used. Although not addressed as a learning goal in the science textbooks, reading comprehension is often presupposed, especially in sixth grade. While the instruction of reading comprehension ought to entail coverage of reading strategies, this is often neglected, or only dealt with indirectly. Given the diversity of textbooks analysed, it seems all the more important to stress that teachers should: 1) clarify the goals and teaching strategies of a book before using it, 2) become aware of strategies that support the development of students' reading comprehension, and 3) use textbooks as a complementary (and not sole) tool to support reading comprehension in all subjects.}}, author = {{Seifert, Susanne}}, issn = {{2211-1662}}, journal = {{Technology, Knowledge and Learning}}, keywords = {{Computer Science Applications, Human-Computer Interaction, Education, Mathematics (miscellaneous)}}, number = {{2}}, pages = {{383--405}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Is Reading Comprehension Taken for Granted? An Analysis of Austrian Textbooks in Fourth and Sixth Grade}}}, doi = {{10.1007/s10758-021-09490-w}}, volume = {{26}}, year = {{2021}}, } @article{30372, author = {{Zahera, H.M.A and Jalota, Rricha and Sherif, Mohamed Ahmed and Ngomo, Axel-Cyrille Ngonga}}, issn = {{2169-3536}}, journal = {{IEEE Access}}, keywords = {{General Engineering, General Materials Science, General Computer Science}}, pages = {{118861--118870}}, publisher = {{Institute of Electrical and Electronics Engineers (IEEE)}}, title = {{{I-AID: Identifying Actionable Information From Disaster-Related Tweets}}}, doi = {{10.1109/access.2021.3107812}}, volume = {{9}}, year = {{2021}}, } @article{53333, author = {{Winkler, Michael}}, issn = {{2036-2145}}, journal = {{ANNALI SCUOLA NORMALE SUPERIORE - CLASSE DI SCIENZE}}, keywords = {{Mathematics (miscellaneous), Theoretical Computer Science}}, pages = {{141--172}}, publisher = {{Scuola Normale Superiore - Edizioni della Normale}}, title = {{{$L^1$ solutions to parabolic Keller-Segel systems involving arbitrary superlinear degradation}}}, doi = {{10.2422/2036-2145.202005_016}}, year = {{2021}}, } @article{38525, author = {{Prikoszovits, Matthias}}, issn = {{2198-2430}}, journal = {{Deutsch als Fremdsprache}}, keywords = {{Computer Science Applications, History, Education}}, number = {{2}}, publisher = {{Erich Schmidt Verlag GmbH & Co. KG}}, title = {{{Christian Efing / Karl-Hubert Kiefer (Hg.): Sprachbezogene Curricula und Aufgaben in der beruflichen Bildung. Aktuelle Konzepte und Forschungsergebnisse}}}, doi = {{10.37307/j.2198-2430.2018.02.14}}, year = {{2020}}, } @article{53270, author = {{Soleymani, Mohammad and Santamaria, Ignacio and Schreier, Peter J.}}, issn = {{0018-9545}}, journal = {{IEEE Transactions on Vehicular Technology}}, keywords = {{Electrical and Electronic Engineering, Computer Networks and Communications, Aerospace Engineering, Automotive Engineering}}, number = {{10}}, pages = {{11632--11645}}, publisher = {{Institute of Electrical and Electronics Engineers (IEEE)}}, title = {{{Improper Gaussian Signaling for the $K$-User MIMO Interference Channels With Hardware Impairments}}}, doi = {{10.1109/tvt.2020.3015558}}, volume = {{69}}, year = {{2020}}, } @article{38059, abstract = {{Advances in EEG filtering algorithms enable analysis of EEG recorded during motor tasks. Although methods such as artifact subspace reconstruction (ASR) can remove transient artifacts automatically, there is virtually no knowledge about how the vigor of bodily movements affects ASRs performance and optimal cut-off parameter selection process. We compared the ratios of removed and reconstructed EEG recorded during a cognitive task, single-leg stance, and fast walking using ASR with 10 cut-off parameters versus visual inspection. Furthermore, we used the repeatability and dipolarity of independent components to assess their quality and an automatic classification tool to assess the number of brain-related independent components. The cut-off parameter equivalent to the ratio of EEG removed in manual cleaning was strictest for the walking task. The quality index of independent components, calculated using RELICA, reached a maximum plateau for cut-off parameters of 10 and higher across all tasks while dipolarity was largely unaffected. The number of independent components within each task remained constant, regardless of the cut-off parameter used. Surprisingly, ASR performed better in motor tasks compared with non-movement tasks. The quality index seemed to be more sensitive to changes induced by ASR compared to dipolarity. There was no benefit of using cut-off parameters less than 10.}}, author = {{Anders, Phillipp and Müller, Helen Martha and Skjæret-Maroni, Nina and Vereijken, Beatrix and Baumeister, Jochen}}, issn = {{0140-0118}}, journal = {{Medical & Biological Engineering & Computing}}, keywords = {{Computer Science Applications, Biomedical Engineering}}, number = {{11}}, pages = {{2673--2683}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{The influence of motor tasks and cut-off parameter selection on artifact subspace reconstruction in EEG recordings}}}, doi = {{10.1007/s11517-020-02252-3}}, volume = {{58}}, year = {{2020}}, } @inproceedings{17667, abstract = {{Resolving distributed attacks benefits from collaboration between networks. We present three approaches for the same multi-domain defensive action that can be applied in such an alliance: 1) Counteract Everywhere, 2) Minimize Countermeasures, and 3) Minimize Propagation. First, we provide a formula to compute efficiency of a defense; then we use this formula to compute the efficiency of the approaches under various circumstances. Finally, we discuss how task execution order and timing influence defense efficiency. Our results show that the Minimize Propagation approach is the most efficient method when defending against the chosen attack.}}, author = {{Koning, Ralph and Polevoy, Gleb and Meijer, Lydia and de Laat, Cees and Grosso, Paola}}, booktitle = {{2019 6th IEEE International Conference on Cyber Security and Cloud Computing (CSCloud)/ 2019 5th IEEE International Conference on Edge Computing and Scalable Cloud (EdgeCom)}}, issn = {{null}}, keywords = {{computer network security, multinetwork environments, multidomain defensive action, task execution order, timing influence defense efficiency, distributed attacks, collaborative security defence approach, minimize propagation approach, minimize countermeasure approach, counteract everywhere approach, Conferences, Cloud computing, Computer crime, Edge computing, Security, Defense Approaches, Multi-Domain Defense, Collaborative Defense, Defense Algorithms, Computer Networks}}, pages = {{113--123}}, title = {{{Approaches for Collaborative Security Defences in Multi Network Environments}}}, doi = {{10.1109/CSCloud/EdgeCom.2019.000-9}}, year = {{2019}}, } @article{35566, abstract = {{Zusammenfassung Zukünftige Regelungskonzepte werden verstärkt auf Cloud-Computing und verteiltes Rechnen setzen. In den resultierenden vernetzten Regelungssystemen werden sensible Daten über öffentliche Netzwerke kommuniziert und auf Plattformen Dritter verarbeitet. Verschlüsselte Regelungen zielen darauf ab, die Vertraulichkeit dieser Daten im gesamten Regelkreis zu sichern. Um dieses Ziel zu erreichen, werden klassische Regelungsalgorithmen so modifiziert, dass sie verschlüsselte Regeleingriffe basierend auf verschlüsselten Systemzuständen berechnen. Zum Einsatz kommen dabei homomorphe Verschlüsselungsverfahren, die einfache mathematische Operationen auf verschlüsselten Daten ermöglichen. Der Artikel erläutert die Implementierung verschlüsselter Regelungen anhand von drei wegweisenden Realisierungen in der Cloud.}}, author = {{Schulze Darup, Moritz}}, issn = {{2196-677X}}, journal = {{at - Automatisierungstechnik}}, keywords = {{Electrical and Electronic Engineering, Computer Science Applications, Control and Systems Engineering}}, number = {{8}}, pages = {{668--681}}, publisher = {{Walter de Gruyter GmbH}}, title = {{{Verschlüsselte Regelung in der Cloud – Stand der Technik und offene Probleme}}}, doi = {{10.1515/auto-2019-0022}}, volume = {{67}}, year = {{2019}}, } @article{47948, abstract = {{Mach-Zehnder electro-optic modulators (EOM) based on thin-film lithium niobate bonded to a silicon photonic waveguide circuit have been shown to achieve very high modulation bandwidths. Open eye-diagram measurements made in the time domain of beyond-small-signal modulation are used to support the modulation-sideband measurements in showing that such EOM’s can support high-frequency modulations well beyond 100 GHz.}}, author = {{Wang, Xiaoxi and Weigel, Peter O. and Zhao, Jie and Rüsing, Michael and Mookherjea, Shayan}}, issn = {{2378-0967}}, journal = {{APL Photonics}}, keywords = {{Computer Networks and Communications, Atomic and Molecular Physics, and Optics}}, number = {{9}}, publisher = {{AIP Publishing}}, title = {{{Achieving beyond-100-GHz large-signal modulation bandwidth in hybrid silicon photonics Mach Zehnder modulators using thin film lithium niobate}}}, doi = {{10.1063/1.5115243}}, volume = {{4}}, year = {{2019}}, } @article{40604, author = {{Taetz, Bertram and Teufl, Wolfgang and Weidmann, Alexander and Pietschmann, Juliane and Jöllenbeck, Thomas and Bleser, Gabriele}}, issn = {{1025-5842}}, journal = {{Computer Methods in Biomechanics and Biomedical Engineering}}, keywords = {{Computer Science Applications, Human-Computer Interaction, Biomedical Engineering, General Medicine, Bioengineering}}, number = {{1}}, pages = {{12--22}}, publisher = {{Informa UK Limited}}, title = {{{Depth camera based statistical shape fitting approach for the creation of an individualized lower body biomechanical model: validity and reliability}}}, doi = {{10.1080/10255842.2019.1688310}}, volume = {{23}}, year = {{2019}}, } @article{20543, author = {{Nguyen Quang Do, Lisa and Krüger, Stefan and Hill, Patrick and Ali, Karim and Bodden, Eric}}, issn = {{2326-3881}}, journal = {{IEEE Transactions on Software Engineering}}, keywords = {{Debugging, Static analysis, Tools, Computer bugs, Standards, Writing, Encoding, Testing and Debugging, Program analysis, Development tools, Integrated environments, Graphical environments, Usability testing}}, pages = {{1--1}}, title = {{{Debugging Static Analysis}}}, doi = {{10.1109/TSE.2018.2868349}}, year = {{2018}}, } @article{42677, author = {{Klowait, Nils}}, issn = {{0951-5666}}, journal = {{AI & SOCIETY}}, keywords = {{Artificial Intelligence, Human-Computer Interaction, Philosophy}}, number = {{4}}, pages = {{527--536}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{The quest for appropriate models of human-likeness: anthropomorphism in media equation research}}}, doi = {{10.1007/s00146-017-0746-z}}, volume = {{33}}, year = {{2017}}, } @article{33260, abstract = {{In this paper we continue the study of group representations which are counterexamples to the Ize conjecture. As in previous papers we find new infinite series of finite groups leading to such counterexamples. These new series are quite different from the previous ones, for example the group orders do not form an arithmetic progression. However, as before we find Lie groups which contain all these groups. This additional structure was observed, but not used in the previous studies of this problem. Here we also investigate the related bifurcations. To a large extent, these are closely related to the presence of mentioned compact Lie group containing the finite groups. This might give a tool to study the bifurcations related to all low dimensional counterexamples of the Ize conjecture. It also gives an indication of where we can expect to find examples where the bifurcation behaviour is different from what we have seen in the known examples.}}, author = {{Lauterbach, Reiner and Schwenker, Sören}}, issn = {{1468-9367}}, journal = {{Dynamical Systems}}, keywords = {{Computer Science Applications, General Mathematics}}, number = {{1}}, pages = {{117--147}}, publisher = {{Informa UK Limited}}, title = {{{Equivariant bifurcations in four-dimensional fixed point spaces}}}, doi = {{10.1080/14689367.2016.1219696}}, volume = {{32}}, year = {{2016}}, }