@inproceedings{24732, author = {{Röder, Michael and de Souza, Geraldo and Kuchelev, Denis and Amer Desouki, Abdelmoneim and Ngonga Ngomo, Axel-Cyrille}}, booktitle = {{15th {IEEE} International Conference on Semantic Computing, {ICSC} 2021, Laguna Hills, CA, USA, January 27-29, 2021}}, pages = {{272--279}}, publisher = {{{IEEE}}}, title = {{{ORCA - a Benchmark for Data Web Crawlers}}}, doi = {{10.1109/ICSC50631.2021.00054}}, year = {{2021}}, } @phdthesis{24760, abstract = {{Anwendungen von Laser-Sinter Bauteilen als Sichtteile sind aufgrund der vergleichsweise schlechten Oberflächenqualität sehr begrenzt. In dieser Arbeit werden dreidimensionale Kennwerte benutzt, um die Oberflächenqualität von Laser-Sinter Bauteiloberflächen und die Einflüsse aus unterschiedlichen Bereichen der gesamten Prozesskette zu evaluieren. Beispielsweise wurden objektive Kennwerte, mit deren Hilfe Orangenhaut zu identifizieren ist, und Prozessparameter, die diese deutlich vermindern, gefunden. Mittels Durchführung von haptischen Versuchen wurde das subjektive Empfinden ermittelt und konnten zu objektiven Kennwerten korreliert werden. Eine mikroskopische Betrachtung des flachen Oberflächenwinkels mit verschieden farbigen Pulvern zeigt neue Erkenntnisse zum Anschmelzvorgang von Partikeln an die Schmelze. Zur nachträglichen Glättung von Oberflächen wurden mechanische, chemische und optische Nachbehandlungsmethoden verwendet und deren Potential aufgezeigt. Eine abschließende neuartige Simulation der dreidimensionalen Topografie bildet die Grundlage für ein Programm zur automatischen und funktionsgerechten Orientierung von Bauteilen, welche am Beispiel eines realen Bauteils erfolgreich validiert wurde. Zusammengenommen zeigen die Ergebnisse, dass die richtige Wahl von Bauorientierung und Prozessparametern entscheidend für die Bauteilqualität ist und selbst eine aufwendige Nachbearbeitung eine ungeschickte Wahl derer nur schwerlich ausgleichen kann. }}, author = {{Delfs, Patrick}}, isbn = {{978-3-8440-7825-1}}, keywords = {{Additive Fertigung, Oberflächenqualität, 3D, Topografie, Simulation, PA12, Laser-Sintern, Rauheit}}, pages = {{126}}, publisher = {{Shaker Verlag GmbH}}, title = {{{Dreidimensionale Oberflächenanalyse und Topografie-Simulation additiv hergestellter Laser-Sinter Bauteile}}}, volume = {{22}}, year = {{2021}}, } @inproceedings{25208, author = {{Speck, Ren{\'{e}} and Moussallem, Diego and Ngonga Ngomo, Axel-Cyrille}}, booktitle = {{15th {IEEE} International Conference on Semantic Computing, {ICSC} 2021, Laguna Hills, CA, USA, January 27-29, 2021}}, pages = {{298--305}}, publisher = {{{IEEE}}}, title = {{{Twitter Network Mimicking for Data Storage Benchmarking}}}, doi = {{10.1109/ICSC50631.2021.00057}}, year = {{2021}}, } @phdthesis{28374, author = {{Bretz, Lukas}}, isbn = {{978-3-947647-20-0}}, publisher = {{Verlagsschriftenreihe des Heinz Nixdorf Instituts, Paderborn}}, title = {{{Rahmenwerk zur Planung und Einführung von Systems Engineering und Model-Based Systems Engineering}}}, volume = {{401}}, year = {{2021}}, } @article{24169, author = {{Nüske, Feliks and Gelß, Patrick and Klus, Stefan and Clementi, Cecilia}}, issn = {{0167-2789}}, journal = {{Physica D: Nonlinear Phenomena}}, title = {{{Tensor-based computation of metastable and coherent sets}}}, doi = {{10.1016/j.physd.2021.133018}}, year = {{2021}}, } @inproceedings{24427, author = {{Magerkohl, Sebastian and Brüggemann, Jan-Peter}}, title = {{{3D-Druck in der industriellen Anwendung - Funktions- und fertigungsgerechte Konstruktion mit additiver Fertigung (Vortrag)}}}, year = {{2021}}, } @article{26011, author = {{Hense, Dominik and Büngeler, Anne and Kollmann, Fabian and Hanke, Marcel and Orive, Alejandro and Keller, Adrian and Grundmeier, Guido and Huber, Klaus and Strube, Oliver I.}}, issn = {{1525-7797}}, journal = {{Biomacromolecules}}, pages = {{4084–4094}}, title = {{{Self-Assembled Fibrinogen Hydro- and Aerogels with Fibrin-like 3D Structures}}}, doi = {{10.1021/acs.biomac.1c00489}}, volume = {{22}}, year = {{2021}}, } @inproceedings{26830, author = {{Mager, Thomas and Jürgenhake, Christoph and Dumitrescu, Roman}}, booktitle = {{14th International Congress Molded Interconnect Devices (MID)}}, location = {{Amberg}}, pages = {{1--9}}, title = {{{Approach for a modular design methodology for an efficient development of 3D MID components}}}, year = {{2021}}, } @inproceedings{28917, author = {{Feldmann, Michael and Padalkin, Andreas and Scheideler, Christian and Dolev, Shlomi}}, booktitle = {{Stabilization, Safety, and Security of Distributed Systems - 23rd International Symposium, (SSS) 2021, Virtual Event, November 17-20, 2021, Proceedings}}, editor = {{Johnen, Colette and Michael Schiller, Elad and Schmid, Stefan}}, pages = {{484--488}}, publisher = {{Springer}}, title = {{{Coordinating Amoebots via Reconfigurable Circuits}}}, doi = {{10.1007/978-3-030-91081-5\_34}}, volume = {{13046}}, year = {{2021}}, } @inproceedings{27056, author = {{Japs, Sergej and Anacker, Harald and Kaiser, Lydia and Holtmann, Jörg and Dumitrescu, Roman and Kargl, Frank}}, booktitle = {{Proceedings of the IEEE}}, location = {{Notre Dame, IN, USA}}, pages = {{412--414}}, title = {{{D-REQs: Determination of security & safety requirements in workshops based on the use of model-based systems engineering}}}, volume = {{1}}, year = {{2021}}, } @article{27574, abstract = {{In adults with major depressive disorder (MDD), a dysfunction between the hypothalamus-pituitary-adrenal (HPA) and the hypothalamus-pituitary-thyroid (HPT) axis has been shown, but the interaction of both axes has not yet been studied in adolescent major depressive disorder (MDD). Data from 273 adolescents diagnosed with MDD from two single center cross-sectional studies were used for analysis. Serum levels of thyrotropin (TSH), free levothyroxine (fT4), and cortisol were determined as indicators of basal HPT and HPA axis functioning and compared to that of adolescent controls by t-tests. Quantile regression was employed in the sample of adolescents with MDD to investigate the relationship between both axes in the normal as well as the pathological range of cortisol levels, considering confounders of both axes. In adolescent MDD, cortisol levels and TSH levels were significantly elevated in comparison to controls (p = <.001, d = 1.35, large effect size, and p = <.001, d = 0.79, moderate effect size, respectively). There was a positive linear relationship between TSH and cortisol (p = .003, d = 0.25, small effect size) at the median of cortisol levels (50th percentile). However, no relationship between TSH and cortisol was found in hypercortisolemia (cortisol levels at the 97.5th percentile). These findings imply that HPT and HPA axis dysfunction is common in adolescents with MDD and that function of both axes is only loosely related. Moreover, the regulation of the HPA and HPT axis are likely subjected to age-related maturational adjustments since findings of this study differ from those reported in adults.}}, author = {{Hirtz, Raphael and Libuda, Lars and Hinney, Anke and Föcker, Manuel and Bühlmeier, Judith and Antel, Jochen and Holterhus, Paul-Martin and Kulle, Alexandra and Kiewert, Cordula and Hebebrand, Johannes and Grasemann, Corinna}}, issn = {{1664-2392}}, journal = {{Frontiers in Endocrinology}}, title = {{{Lack of Evidence for a Relationship Between the Hypothalamus-Pituitary-Adrenal and the Hypothalamus-Pituitary-Thyroid Axis in Adolescent Depression}}}, doi = {{10.3389/fendo.2021.662243}}, year = {{2021}}, } @article{21264, abstract = {{Abstract Background Hand amputation can have a truly debilitating impact on the life of the affected person. A multifunctional myoelectric prosthesis controlled using pattern classification can be used to restore some of the lost motor abilities. However, learning to control an advanced prosthesis can be a challenging task, but virtual and augmented reality (AR) provide means to create an engaging and motivating training. Methods In this study, we present a novel training framework that integrates virtual elements within a real scene (AR) while allowing the view from the first-person perspective. The framework was evaluated in 13 able-bodied subjects and a limb-deficient person divided into intervention (IG) and control (CG) groups. The IG received training by performing simulated clothespin task and both groups conducted a pre- and posttest with a real prosthesis. When training with the AR, the subjects received visual feedback on the generated grasping force. The main outcome measure was the number of pins that were successfully transferred within 20 min (task duration), while the number of dropped and broken pins were also registered. The participants were asked to score the difficulty of the real task (posttest), fun-factor and motivation, as well as the utility of the feedback. Results The performance (median/interquartile range) consistently increased during the training sessions (4/3 to 22/4). While the results were similar for the two groups in the pretest, the performance improved in the posttest only in IG. In addition, the subjects in IG transferred significantly more pins (28/10.5 versus 14.5/11), and dropped (1/2.5 versus 3.5/2) and broke (5/3.8 versus 14.5/9) significantly fewer pins in the posttest compared to CG. The participants in IG assigned (mean ± std) significantly lower scores to the difficulty compared to CG (5.2 ± 1.9 versus 7.1 ± 0.9), and they highly rated the fun factor (8.7 ± 1.3) and usefulness of feedback (8.5 ± 1.7). Conclusion The results demonstrated that the proposed AR system allows for the transfer of skills from the simulated to the real task while providing a positive user experience. The present study demonstrates the effectiveness and flexibility of the proposed AR framework. Importantly, the developed system is open source and available for download and further development. }}, author = {{Boschmann, Alexander and Neuhaus, Dorothee and Vogt, Sarah and Kaltschmidt, Christian and Platzner, Marco and Dosen, Strahinja}}, issn = {{1743-0003}}, journal = {{Journal of NeuroEngineering and Rehabilitation}}, title = {{{Immersive augmented reality system for the training of pattern classification control with a myoelectric prosthesis}}}, doi = {{10.1186/s12984-021-00822-6}}, year = {{2021}}, } @article{21297, author = {{Mirbabaie, Milad and Ehnis, C. and Stieglitz, S. and Bunker, D. and Rose, T.}}, journal = {{Information Systems Frontiers}}, title = {{{Digital Nudging in Social Media Disaster Communication}}}, year = {{2021}}, } @article{23598, author = {{Kessler, Jan and Calcavecchia, Francesco and Kühne, Thomas D.}}, issn = {{2513-0390}}, journal = {{Advanced Theory and Simulations}}, title = {{{Artificial Neural Networks as Trial Wave Functions for Quantum Monte Carlo}}}, doi = {{10.1002/adts.202000269}}, year = {{2021}}, } @article{23609, author = {{Guzelturk, Burak and Winkler, Thomas and Van de Goor, Tim W. J. and Smith, Matthew D. and Bourelle, Sean A. and Feldmann, Sascha and Trigo, Mariano and Teitelbaum, Samuel W. and Steinrück, Hans-Georg and de la Pena, Gilberto A. and Alonso-Mori, Roberto and Zhu, Diling and Sato, Takahiro and Karunadasa, Hemamala I. and Toney, Michael F. and Deschler, Felix and Lindenberg, Aaron M.}}, issn = {{1476-1122}}, journal = {{Nature Materials}}, pages = {{618--623}}, title = {{{Visualization of dynamic polaronic strain fields in hybrid lead halide perovskites}}}, doi = {{10.1038/s41563-020-00865-5}}, volume = {{20}}, year = {{2021}}, } @article{23610, author = {{Paul, Partha P. and McShane, Eric J. and Colclasure, Andrew M. and Balsara, Nitash and Brown, David E. and Cao, Chuntian and Chen, Bor‐Rong and Chinnam, Parameswara R. and Cui, Yi and Dufek, Eric J. and Finegan, Donal P. and Gillard, Samuel and Huang, Wenxiao and Konz, Zachary M. and Kostecki, Robert and Liu, Fang and Lubner, Sean and Prasher, Ravi and Preefer, Molleigh B. and Qian, Ji and Rodrigues, Marco‐Tulio Fonseca and Schnabel, Manuel and Son, Seoung‐Bum and Srinivasan, Venkat and Steinrück, Hans-Georg and Tanim, Tanvir R. and Toney, Michael F. and Tong, Wei and Usseglio‐Viretta, Francois and Wan, Jiayu and Yusuf, Maha and McCloskey, Bryan D. and Nelson Weker, Johanna}}, issn = {{1614-6832}}, journal = {{Advanced Energy Materials}}, pages = {{2100372}}, title = {{{A Review of Existing and Emerging Methods for Lithium Detection and Characterization in Li‐Ion and Li‐Metal Batteries}}}, doi = {{10.1002/aenm.202100372}}, volume = {{11}}, year = {{2021}}, } @article{23616, author = {{Galluzzo, Michael D. and Grundy, Lorena S. and Takacs, Christopher J. and Cao, Chuntian and Steinrück, Hans-Georg and Fu, Sean and Rivas Valadez, Michael A. and Toney, Michael F. and Balsara, Nitash P.}}, issn = {{0024-9297}}, journal = {{Macromolecules}}, pages = {{7808--7824}}, title = {{{Orientation-Dependent Distortion of Lamellae in a Block Copolymer Electrolyte under DC Polarization}}}, doi = {{10.1021/acs.macromol.1c01295}}, volume = {{54}}, year = {{2021}}, } @article{23842, author = {{Baron, Elias and Feneberg, Martin and Goldhahn, Rüdiger and Deppe, Michael and Tacken, Fabian and As, Donat Josef}}, issn = {{0022-3727}}, journal = {{Journal of Physics D: Applied Physics}}, title = {{{Optical evidence of many-body effects in the zincblende Al$_\mathrm{x}$Ga$_\mathrm{1-x}$N alloy system}}}, doi = {{10.1088/1361-6463/abb97a}}, year = {{2021}}, } @inproceedings{22283, abstract = {{ We show how to construct an overlay network of constant degree and diameter $O(\log n)$ in time $O(\log n)$ starting from an arbitrary weakly connected graph. We assume a synchronous communication network in which nodes can send messages to nodes they know the identifier of and establish new connections by sending node identifiers. If the initial network's graph is weakly connected and has constant degree, then our algorithm constructs the desired topology with each node sending and receiving only $O(\log n)$ messages in each round in time $O(\log n)$, w.h.p., which beats the currently best $O(\log^{3/2} n)$ time algorithm of [Götte et al., SIROCCO'19]. Since the problem cannot be solved faster than by using pointer jumping for $O(\log n)$ rounds (which would even require each node to communicate $\Omega(n)$ bits), our algorithm is asymptotically optimal. We achieve this speedup by using short random walks to repeatedly establish random connections between the nodes that quickly reduce the conductance of the graph using an observation of [Kwok and Lau, APPROX'14]. Additionally, we show how our algorithm can be used to efficiently solve graph problems in \emph{hybrid networks} [Augustine et al., SODA'20]. Motivated by the idea that nodes possess two different modes of communication, we assume that communication of the \emph{initial} edges is unrestricted. In contrast, only polylogarithmically many messages can be communicated over edges that have been established throughout an algorithm's execution. For an (undirected) graph $G$ with arbitrary degree, we show how to compute connected components, a spanning tree, and biconnected components in time $O(\log n)$, w.h.p. Furthermore, we show how to compute an MIS in time $O(\log d + \log \log n)$, w.h.p., where $d$ is the initial degree of $G$.}}, author = {{Götte, Thorsten and Hinnenthal, Kristian and Scheideler, Christian and Werthmann, Julian}}, booktitle = {{Proc. of the 40th ACM Symposium on Principles of Distributed Computing (PODC '21)}}, editor = {{Censor-Hillel, Keren}}, location = {{Virtual}}, publisher = {{ACM}}, title = {{{Time-Optimal Construction of Overlays}}}, doi = {{10.1145/3465084.3467932}}, year = {{2021}}, } @article{22510, abstract = {{Over the past decades, the Gathering problem, which asks to gather a group of robots in finite time given some restrictions, has been intensively studied. In this paper, we are given a group of n autonomous, dimensionless, deterministic, and anonymous robots, with bounded viewing range. Assuming a continuous time model, the goal is to gather these robots into one point in finite time. We introduce a simple convergence criterion that defines a new class of algorithms which perform gathering in O(nd) time, where d is the diameter of the initial robot configuration. We show that some gathering algorithms in the literature belong to this class and propose two new algorithms that belong to this class and have quadratic running time, namely, Go-To-The-Relative-Center algorithm (GTRC) and Safe-Go-To-The-Relative-Center algorithm (S-GTRC). We prove that the latter can perform gathering without collision by using a slightly more complex robot model: non oblivious, chiral, and luminous (i.e. robots have observable external memory, as in [8]). We also consider a variant of the Gathering problem, the Near-Gathering problem, in which robots must get close to each other without colliding. We show that S-GTRC solves the Near-Gathering problem in quadratic time and assumes a weaker robot model than the one assumed in the current state-of-the-art.}}, author = {{Li, Shouwei and Markarian, Christine and Meyer auf der Heide, Friedhelm and Podlipyan, Pavel}}, issn = {{0304-3975}}, journal = {{Theoretical Computer Science}}, keywords = {{Local algorithms, Distributed algorithms, Collisionless gathering, Mobile robots, Multiagent system}}, pages = {{41--60}}, title = {{{A continuous strategy for collisionless gathering}}}, doi = {{10.1016/j.tcs.2020.10.037}}, volume = {{852}}, year = {{2021}}, }