[{"status":"public","has_accepted_license":"1","page":"114780","publisher":"Elsevier","_id":"29240","ddc":["510"],"user_id":"85279","volume":421,"file_date_updated":"2022-06-28T15:25:50Z","citation":{"ieee":"S. Ober-Blöbaum and C. Offen, “Variational Learning of Euler–Lagrange Dynamics from Data,” <i>Journal of Computational and Applied Mathematics</i>, vol. 421, p. 114780, 2023, doi: <a href=\"https://doi.org/10.1016/j.cam.2022.114780\">10.1016/j.cam.2022.114780</a>.","apa":"Ober-Blöbaum, S., &#38; Offen, C. (2023). Variational Learning of Euler–Lagrange Dynamics from Data. <i>Journal of Computational and Applied Mathematics</i>, <i>421</i>, 114780. <a href=\"https://doi.org/10.1016/j.cam.2022.114780\">https://doi.org/10.1016/j.cam.2022.114780</a>","short":"S. Ober-Blöbaum, C. Offen, Journal of Computational and Applied Mathematics 421 (2023) 114780.","chicago":"Ober-Blöbaum, Sina, and Christian Offen. “Variational Learning of Euler–Lagrange Dynamics from Data.” <i>Journal of Computational and Applied Mathematics</i> 421 (2023): 114780. <a href=\"https://doi.org/10.1016/j.cam.2022.114780\">https://doi.org/10.1016/j.cam.2022.114780</a>.","mla":"Ober-Blöbaum, Sina, and Christian Offen. “Variational Learning of Euler–Lagrange Dynamics from Data.” <i>Journal of Computational and Applied Mathematics</i>, vol. 421, Elsevier, 2023, p. 114780, doi:<a href=\"https://doi.org/10.1016/j.cam.2022.114780\">10.1016/j.cam.2022.114780</a>.","bibtex":"@article{Ober-Blöbaum_Offen_2023, title={Variational Learning of Euler–Lagrange Dynamics from Data}, volume={421}, DOI={<a href=\"https://doi.org/10.1016/j.cam.2022.114780\">10.1016/j.cam.2022.114780</a>}, journal={Journal of Computational and Applied Mathematics}, publisher={Elsevier}, author={Ober-Blöbaum, Sina and Offen, Christian}, year={2023}, pages={114780} }","ama":"Ober-Blöbaum S, Offen C. Variational Learning of Euler–Lagrange Dynamics from Data. <i>Journal of Computational and Applied Mathematics</i>. 2023;421:114780. doi:<a href=\"https://doi.org/10.1016/j.cam.2022.114780\">10.1016/j.cam.2022.114780</a>"},"quality_controlled":"1","external_id":{"arxiv":["2112.12619"]},"oa":"1","title":"Variational Learning of Euler–Lagrange Dynamics from Data","year":"2023","publication_identifier":{"issn":["0377-0427"]},"author":[{"id":"16494","last_name":"Ober-Blöbaum","first_name":"Sina","full_name":"Ober-Blöbaum, Sina"},{"full_name":"Offen, Christian","orcid":"0000-0002-5940-8057","first_name":"Christian","last_name":"Offen","id":"85279"}],"date_updated":"2023-08-10T08:42:39Z","publication_status":"epub_ahead","intvolume":"       421","article_type":"original","language":[{"iso":"eng"}],"doi":"10.1016/j.cam.2022.114780","publication":"Journal of Computational and Applied Mathematics","related_material":{"link":[{"relation":"software","url":"https://github.com/Christian-Offen/LagrangianShadowIntegration"}]},"abstract":[{"lang":"eng","text":"The principle of least action is one of the most fundamental physical principle. It says that among all possible motions connecting two points in a phase space, the system will exhibit those motions which extremise an action functional. Many qualitative features of dynamical systems, such as the presence of conservation laws and energy balance equations, are related to the existence of an action functional. Incorporating variational structure into learning algorithms for dynamical systems is, therefore, crucial in order to make sure that the learned model shares important features with the exact physical system. In this paper we show how to incorporate variational principles into trajectory predictions of learned dynamical systems. The novelty of this work is that (1) our technique relies only on discrete position data of observed trajectories. Velocities or conjugate momenta do not need to be observed or approximated and no prior knowledge about the form of the variational principle is assumed. Instead, they are recovered using backward error analysis. (2) Moreover, our technique compensates discretisation errors when trajectories are computed from the learned system. This is important when moderate to large step-sizes are used and high accuracy is required. For this,\r\nwe introduce and rigorously analyse the concept of inverse modified Lagrangians by developing an inverse version of variational backward error analysis. (3) Finally, we introduce a method to perform system identification from position observations only, based on variational backward error analysis."}],"file":[{"date_updated":"2022-06-28T15:25:50Z","relation":"main_file","file_size":3640770,"access_level":"open_access","file_name":"ShadowLagrangian_revision1_journal_style_arxiv.pdf","title":"Variational Learning of Euler–Lagrange Dynamics from Data","content_type":"application/pdf","file_id":"32274","creator":"coffen","description":"The principle of least action is one of the most fundamental physical principle. It says that among all possible motions\nconnecting two points in a phase space, the system will exhibit those motions which extremise an action functional.\nMany qualitative features of dynamical systems, such as the presence of conservation laws and energy balance equa-\ntions, are related to the existence of an action functional. Incorporating variational structure into learning algorithms\nfor dynamical systems is, therefore, crucial in order to make sure that the learned model shares important features\nwith the exact physical system. In this paper we show how to incorporate variational principles into trajectory predic-\ntions of learned dynamical systems. The novelty of this work is that (1) our technique relies only on discrete position\ndata of observed trajectories. Velocities or conjugate momenta do not need to be observed or approximated and no\nprior knowledge about the form of the variational principle is assumed. Instead, they are recovered using backward\nerror analysis. (2) Moreover, our technique compensates discretisation errors when trajectories are computed from the\nlearned system. This is important when moderate to large step-sizes are used and high accuracy is required. For this,\nwe introduce and rigorously analyse the concept of inverse modified Lagrangians by developing an inverse version of\nvariational backward error analysis. (3) Finally, we introduce a method to perform system identification from position\nobservations only, based on variational backward error analysis.","date_created":"2022-06-28T15:25:50Z"}],"date_created":"2022-01-11T13:24:00Z","type":"journal_article","keyword":["Lagrangian learning","variational backward error analysis","modified Lagrangian","variational integrators","physics informed learning"],"department":[{"_id":"636"}]},{"external_id":{"arxiv":["2201.03911"]},"oa":"1","citation":{"chicago":"McLachlan, Robert, and Christian Offen. “Backward Error Analysis for Conjugate Symplectic Methods.” <i>Journal of Geometric Mechanics</i> 15, no. 1 (2023): 98–115. <a href=\"https://doi.org/10.3934/jgm.2023005\">https://doi.org/10.3934/jgm.2023005</a>.","short":"R. McLachlan, C. Offen, Journal of Geometric Mechanics 15 (2023) 98–115.","ieee":"R. McLachlan and C. Offen, “Backward error analysis for conjugate symplectic methods,” <i>Journal of Geometric Mechanics</i>, vol. 15, no. 1, pp. 98–115, 2023, doi: <a href=\"https://doi.org/10.3934/jgm.2023005\">10.3934/jgm.2023005</a>.","apa":"McLachlan, R., &#38; Offen, C. (2023). Backward error analysis for conjugate symplectic methods. <i>Journal of Geometric Mechanics</i>, <i>15</i>(1), 98–115. <a href=\"https://doi.org/10.3934/jgm.2023005\">https://doi.org/10.3934/jgm.2023005</a>","bibtex":"@article{McLachlan_Offen_2023, title={Backward error analysis for conjugate symplectic methods}, volume={15}, DOI={<a href=\"https://doi.org/10.3934/jgm.2023005\">10.3934/jgm.2023005</a>}, number={1}, journal={Journal of Geometric Mechanics}, publisher={AIMS Press}, author={McLachlan, Robert and Offen, Christian}, year={2023}, pages={98–115} }","ama":"McLachlan R, Offen C. Backward error analysis for conjugate symplectic methods. <i>Journal of Geometric Mechanics</i>. 2023;15(1):98-115. doi:<a href=\"https://doi.org/10.3934/jgm.2023005\">10.3934/jgm.2023005</a>","mla":"McLachlan, Robert, and Christian Offen. “Backward Error Analysis for Conjugate Symplectic Methods.” <i>Journal of Geometric Mechanics</i>, vol. 15, no. 1, AIMS Press, 2023, pp. 98–115, doi:<a href=\"https://doi.org/10.3934/jgm.2023005\">10.3934/jgm.2023005</a>."},"file_date_updated":"2022-08-12T16:48:59Z","quality_controlled":"1","_id":"29236","publisher":"AIMS Press","page":"98-115","volume":15,"ddc":["510"],"user_id":"85279","status":"public","has_accepted_license":"1","date_created":"2022-01-11T12:48:39Z","file":[{"access_level":"open_access","file_size":827030,"file_name":"BEA_MultiStep_Matrix.pdf","date_updated":"2022-08-12T16:48:59Z","relation":"main_file","content_type":"application/pdf","file_id":"32801","title":"Backward error analysis for conjugate symplectic methods","creator":"coffen","date_created":"2022-08-12T16:48:59Z","description":"The numerical solution of an ordinary differential equation can be interpreted as the exact solution of a nearby modified equation. Investigating the behaviour of numerical solutions by analysing the modified equation is known as backward error analysis. If the original and modified equation share structural properties, then the exact and approximate solution share geometric features such as the existence of conserved quantities. Conjugate symplectic methods preserve a modified symplectic form and a modified Hamiltonian when applied to a Hamiltonian system. We show how a blended version of variational and symplectic techniques can be used to compute modified symplectic and Hamiltonian structures. In contrast to other approaches, our backward error analysis method does not rely on an ansatz but computes the structures systematically, provided that a variational formulation of the method is known. The technique is illustrated on the example of symmetric linear multistep methods with matrix coefficients."}],"department":[{"_id":"636"}],"type":"journal_article","keyword":["variational integrators","backward error analysis","Euler--Lagrange equations","multistep methods","conjugate symplectic methods"],"issue":"1","publication":"Journal of Geometric Mechanics","related_material":{"link":[{"relation":"software","url":"https://github.com/Christian-Offen/BEAConjugateSymplectic"}]},"abstract":[{"lang":"eng","text":"The numerical solution of an ordinary differential equation can be interpreted as the exact solution of a nearby modified equation. Investigating the behaviour of numerical solutions by analysing the modified equation is known as backward error analysis. If the original and modified equation share structural properties, then the exact and approximate solution share geometric features such as the existence of conserved quantities. Conjugate symplectic methods preserve a modified symplectic form and a modified Hamiltonian when applied to a Hamiltonian system. We show how a blended version of variational and symplectic techniques can be used to compute modified symplectic and Hamiltonian structures. In contrast to other approaches, our backward error analysis method does not rely on an ansatz but computes the structures systematically, provided that a variational formulation of the method is known. The technique is illustrated on the example of symmetric linear multistep methods with matrix coefficients."}],"language":[{"iso":"eng"}],"doi":"10.3934/jgm.2023005","author":[{"full_name":"McLachlan, Robert","last_name":"McLachlan","first_name":"Robert"},{"full_name":"Offen, Christian","orcid":"0000-0002-5940-8057","last_name":"Offen","first_name":"Christian","id":"85279"}],"title":"Backward error analysis for conjugate symplectic methods","year":"2023","intvolume":"        15","article_type":"original","date_updated":"2023-08-10T08:40:30Z","publication_status":"published"},{"ddc":["510"],"user_id":"85279","volume":33,"_id":"37654","publisher":"AIP Publishing","has_accepted_license":"1","status":"public","oa":"1","external_id":{"arxiv":["2301.07928"]},"file_date_updated":"2023-04-26T16:20:56Z","citation":{"bibtex":"@article{Dierkes_Offen_Ober-Blöbaum_Flaßkamp_2023, title={Hamiltonian Neural Networks with Automatic Symmetry Detection}, volume={33}, DOI={<a href=\"https://doi.org/10.1063/5.0142969\">10.1063/5.0142969</a>}, number={6063115}, journal={Chaos}, publisher={AIP Publishing}, author={Dierkes, Eva and Offen, Christian and Ober-Blöbaum, Sina and Flaßkamp, Kathrin}, year={2023} }","ama":"Dierkes E, Offen C, Ober-Blöbaum S, Flaßkamp K. Hamiltonian Neural Networks with Automatic Symmetry Detection. <i>Chaos</i>. 2023;33(6). doi:<a href=\"https://doi.org/10.1063/5.0142969\">10.1063/5.0142969</a>","mla":"Dierkes, Eva, et al. “Hamiltonian Neural Networks with Automatic Symmetry Detection.” <i>Chaos</i>, vol. 33, no. 6, 063115, AIP Publishing, 2023, doi:<a href=\"https://doi.org/10.1063/5.0142969\">10.1063/5.0142969</a>.","short":"E. Dierkes, C. Offen, S. Ober-Blöbaum, K. Flaßkamp, Chaos 33 (2023).","chicago":"Dierkes, Eva, Christian Offen, Sina Ober-Blöbaum, and Kathrin Flaßkamp. “Hamiltonian Neural Networks with Automatic Symmetry Detection.” <i>Chaos</i> 33, no. 6 (2023). <a href=\"https://doi.org/10.1063/5.0142969\">https://doi.org/10.1063/5.0142969</a>.","ieee":"E. Dierkes, C. Offen, S. Ober-Blöbaum, and K. Flaßkamp, “Hamiltonian Neural Networks with Automatic Symmetry Detection,” <i>Chaos</i>, vol. 33, no. 6, Art. no. 063115, 2023, doi: <a href=\"https://doi.org/10.1063/5.0142969\">10.1063/5.0142969</a>.","apa":"Dierkes, E., Offen, C., Ober-Blöbaum, S., &#38; Flaßkamp, K. (2023). Hamiltonian Neural Networks with Automatic Symmetry Detection. <i>Chaos</i>, <i>33</i>(6), Article 063115. <a href=\"https://doi.org/10.1063/5.0142969\">https://doi.org/10.1063/5.0142969</a>"},"doi":"10.1063/5.0142969","article_number":"063115","language":[{"iso":"eng"}],"date_updated":"2023-08-10T08:37:01Z","publication_status":"published","intvolume":"        33","article_type":"original","title":"Hamiltonian Neural Networks with Automatic Symmetry Detection","year":"2023","author":[{"first_name":"Eva","last_name":"Dierkes","full_name":"Dierkes, Eva"},{"id":"85279","full_name":"Offen, Christian","last_name":"Offen","orcid":"0000-0002-5940-8057","first_name":"Christian"},{"last_name":"Ober-Blöbaum","first_name":"Sina","full_name":"Ober-Blöbaum, Sina","id":"16494"},{"first_name":"Kathrin","last_name":"Flaßkamp","full_name":"Flaßkamp, Kathrin"}],"publication_identifier":{"issn":["1054-1500"]},"type":"journal_article","department":[{"_id":"636"}],"file":[{"creator":"coffen","date_created":"2023-04-26T16:20:56Z","description":"Incorporating physical system knowledge into data-driven\nsystem identification has been shown to be beneficial. The\napproach presented in this article combines learning of an\nenergy-conserving model from data with detecting a Lie\ngroup representation of the unknown system symmetry.\nThe proposed approach can improve the learned model\nand reveal underlying symmetry simultaneously.","access_level":"open_access","file_size":5200111,"file_name":"JournalPaper_main.pdf","date_updated":"2023-04-26T16:20:56Z","relation":"main_file","content_type":"application/pdf","file_id":"44205","title":"Hamiltonian Neural Networks with Automatic Symmetry Detection"}],"date_created":"2023-01-20T09:10:06Z","related_material":{"link":[{"url":"https://github.com/eva-dierkes/HNN_withSymmetries","relation":"software","description":"GitHub"}]},"abstract":[{"lang":"eng","text":"Recently, Hamiltonian neural networks (HNN) have been introduced to incorporate prior physical knowledge when\r\nlearning the dynamical equations of Hamiltonian systems. Hereby, the symplectic system structure is preserved despite\r\nthe data-driven modeling approach. However, preserving symmetries requires additional attention. In this research, we\r\nenhance the HNN with a Lie algebra framework to detect and embed symmetries in the neural network. This approach\r\nallows to simultaneously learn the symmetry group action and the total energy of the system. As illustrating examples,\r\na pendulum on a cart and a two-body problem from astrodynamics are considered."}],"publication":"Chaos","issue":"6"},{"extern":"1","abstract":[{"text":"Ever increasing demands on the performance of microchips are leading to ever more complex semiconductor technologies with ever shrinking feature sizes. Complex applications with high demands on safety and reliability, such as autonomous driving, are simultaneously driving the requirements for test and diagnosis of VLSI circuits. Throughout the life cycle of a microchip, uncertainties occur that affect its timing behavior. For example, weak circuit structures, aging effects, or process variations can lead to a change in the timing behavior of the circuit. While these uncertainties do not necessarily lead to a change of the functional behavior, they can lead to a reliability problem.\r\nWith modular and hybrid compaction two test instruments are presented in this work that can be used for X-tolerant test response compaction in the built-in Faster-than-At-Speed Test (FAST) which is used to detect uncertainties in VLSI circuits. One challenge for test response compaction during FAST is the high and varying X-rate at the outputs of the circuit under test. By dividing the circuit outputs into test groups and separately compacting these test groups using stochastic compactors, the modular compaction is able to handle these high and varying X-rates.\r\nTo deal with uncertainties on logic interconnects, a method for distinguishing crosstalk and process variation is presented. In current semiconductor technologies, the number of parasitic coupling capacitances between logic interconnects is growing. These coupling capacitances can lead to crosstalk, which causes increased current flow in the logic interconnects, which in turn can lead to increased electromigration. In the presented method, delay maps describing the timing behavior of the circuit outputs at different operating points are used to train artificial neural networks which classify the tested circuits into fault-free and faulty.","lang":"eng"},{"text":"Immer größere Anforderungen an die Leistungsfähigkeit von Mikrochips führen zu Halbleitertechnologien mit immer kleiner werdenden Strukturgrößen. Anwendungen mit hohen Ansprüchen an Sicherheit und Zuverlässigkeit, wie z.B. das autonome Fahren, treiben gleichzeitig die Anforderungen an den Test hochintegrierter Schaltungen an. Während des gesamten Lebenszyklus eines Mikrochips kommt es zu Unsicherheiten im Zeitverhalten. So können z.B. schwache Schaltungsstrukturen, Alterungseffekte oder Prozessvariationen zu einer Veränderung des Zeitverhaltens führen. Während diese Unsicherheiten nicht zu einer Veränderung des funktionalen Verhaltens führen müssen, können sie jedoch zu einem Zuverlässigkeitsproblem führen.\r\nMit der modularen und der hybriden Kompaktierung werden in dieser Arbeit zwei Testinstrumente vorgestellt, die für die X-tolerante Testantwortkompaktierung im eingebauten Hochgeschwindigkeitstest verwendet werden können. Eine Herausforderung für die Testantwortkompaktierung während des Hochgeschwindigkeitstests ist die hohe und variierende X-Rate an den Ausgängen der zu testenden Schaltung. Durch die Einteilung der Schaltungsausgänge in Prüfgruppen und die separierte Kompaktierung der Prüfgruppen mithilfe von stochastischen Kompaktierern, können die vorgestellten Verfahren diese hohen und variierenden X-Raten verarbeiten.\r\nFür den Umgang mit Unsicherheiten auf Verbindungsleitungen der Logik-Schaltung wird ein Verfahren zur Unterscheidung von Übersprechen und Prozessvariation vorgestellt. In aktuellen Halbleitertechnologien kommt es vermehrt zu parasitären Koppelkapazitäten zwischen den Verbindungsleitungen. In dem vorgestellten Verfahren werden künstliche neuronale Netze trainiert, um die Schaltungen in fehlerfrei und fehlerhaft zu klassifizieren.","lang":"ger"}],"date_created":"2023-08-12T09:10:38Z","type":"dissertation","keyword":["Testantwortkompaktierung","Prozessvariation","Silicon Lifecycle Management"],"department":[{"_id":"48"}],"year":"2023","title":"Testinstrumente und Testdatenanalyse zur Verarbeitung von Unsicherheiten in Logikblöcken hochintegrierter Schaltungen","author":[{"full_name":"Sprenger, Alexander","first_name":"Alexander","orcid":"0000-0002-0775-7677","last_name":"Sprenger","id":"22707"}],"publication_status":"published","date_updated":"2023-08-12T09:13:18Z","main_file_link":[{"open_access":"1","url":"https://nbn-resolving.org/urn:nbn:de:hbz:466:2-45493"}],"language":[{"iso":"ger"}],"doi":"10.17619/UNIPB/1-1787","citation":{"ieee":"A. Sprenger, <i>Testinstrumente und Testdatenanalyse zur Verarbeitung von Unsicherheiten in Logikblöcken hochintegrierter Schaltungen</i>. Paderborn: Universität Paderborn, 2023.","apa":"Sprenger, A. (2023). <i>Testinstrumente und Testdatenanalyse zur Verarbeitung von Unsicherheiten in Logikblöcken hochintegrierter Schaltungen</i>. Universität Paderborn. <a href=\"https://doi.org/10.17619/UNIPB/1-1787\">https://doi.org/10.17619/UNIPB/1-1787</a>","short":"A. Sprenger, Testinstrumente und Testdatenanalyse zur Verarbeitung von Unsicherheiten in Logikblöcken hochintegrierter Schaltungen, Universität Paderborn, Paderborn, 2023.","chicago":"Sprenger, Alexander. <i>Testinstrumente und Testdatenanalyse zur Verarbeitung von Unsicherheiten in Logikblöcken hochintegrierter Schaltungen</i>. Paderborn: Universität Paderborn, 2023. <a href=\"https://doi.org/10.17619/UNIPB/1-1787\">https://doi.org/10.17619/UNIPB/1-1787</a>.","mla":"Sprenger, Alexander. <i>Testinstrumente und Testdatenanalyse zur Verarbeitung von Unsicherheiten in Logikblöcken hochintegrierter Schaltungen</i>. Universität Paderborn, 2023, doi:<a href=\"https://doi.org/10.17619/UNIPB/1-1787\">10.17619/UNIPB/1-1787</a>.","bibtex":"@book{Sprenger_2023, place={Paderborn}, title={Testinstrumente und Testdatenanalyse zur Verarbeitung von Unsicherheiten in Logikblöcken hochintegrierter Schaltungen}, DOI={<a href=\"https://doi.org/10.17619/UNIPB/1-1787\">10.17619/UNIPB/1-1787</a>}, publisher={Universität Paderborn}, author={Sprenger, Alexander}, year={2023} }","ama":"Sprenger A. <i>Testinstrumente und Testdatenanalyse zur Verarbeitung von Unsicherheiten in Logikblöcken hochintegrierter Schaltungen</i>. Universität Paderborn; 2023. doi:<a href=\"https://doi.org/10.17619/UNIPB/1-1787\">10.17619/UNIPB/1-1787</a>"},"supervisor":[{"id":"209","full_name":"Hellebrand, Sybille","first_name":"Sybille","orcid":"0000-0002-3717-3939","last_name":"Hellebrand"},{"id":"398","last_name":"Platzner","first_name":"Marco","full_name":"Platzner, Marco"}],"place":"Paderborn","oa":"1","status":"public","page":"xi, 160","_id":"46482","publisher":"Universität Paderborn","user_id":"22707"},{"status":"public","title":"Partial observations, coarse graining and equivariance in Koopman  operator theory for large-scale dynamical systems","year":"2023","author":[{"full_name":"Peitz, Sebastian","first_name":"Sebastian","orcid":"0000-0002-3389-793X","last_name":"Peitz","id":"47427"},{"id":"98879","first_name":"Hans","last_name":"Harder","full_name":"Harder, Hans"},{"last_name":"Nüske","first_name":"Feliks","full_name":"Nüske, Feliks"},{"last_name":"Philipp","first_name":"Friedrich","full_name":"Philipp, Friedrich"},{"full_name":"Schaller, Manuel","last_name":"Schaller","first_name":"Manuel"},{"full_name":"Worthmann, Karl","last_name":"Worthmann","first_name":"Karl"}],"date_updated":"2023-08-21T05:53:35Z","main_file_link":[{"url":"https://arxiv.org/pdf/2307.15325","open_access":"1"}],"_id":"46579","language":[{"iso":"eng"}],"user_id":"47427","publication":"arXiv:2307.15325","citation":{"short":"S. Peitz, H. Harder, F. Nüske, F. Philipp, M. Schaller, K. Worthmann, ArXiv:2307.15325 (2023).","chicago":"Peitz, Sebastian, Hans Harder, Feliks Nüske, Friedrich Philipp, Manuel Schaller, and Karl Worthmann. “Partial Observations, Coarse Graining and Equivariance in Koopman  Operator Theory for Large-Scale Dynamical Systems.” <i>ArXiv:2307.15325</i>, 2023.","ieee":"S. Peitz, H. Harder, F. Nüske, F. Philipp, M. Schaller, and K. Worthmann, “Partial observations, coarse graining and equivariance in Koopman  operator theory for large-scale dynamical systems,” <i>arXiv:2307.15325</i>. 2023.","apa":"Peitz, S., Harder, H., Nüske, F., Philipp, F., Schaller, M., &#38; Worthmann, K. (2023). Partial observations, coarse graining and equivariance in Koopman  operator theory for large-scale dynamical systems. In <i>arXiv:2307.15325</i>.","bibtex":"@article{Peitz_Harder_Nüske_Philipp_Schaller_Worthmann_2023, title={Partial observations, coarse graining and equivariance in Koopman  operator theory for large-scale dynamical systems}, journal={arXiv:2307.15325}, author={Peitz, Sebastian and Harder, Hans and Nüske, Feliks and Philipp, Friedrich and Schaller, Manuel and Worthmann, Karl}, year={2023} }","ama":"Peitz S, Harder H, Nüske F, Philipp F, Schaller M, Worthmann K. Partial observations, coarse graining and equivariance in Koopman  operator theory for large-scale dynamical systems. <i>arXiv:230715325</i>. Published online 2023.","mla":"Peitz, Sebastian, et al. “Partial Observations, Coarse Graining and Equivariance in Koopman  Operator Theory for Large-Scale Dynamical Systems.” <i>ArXiv:2307.15325</i>, 2023."},"abstract":[{"text":"The Koopman operator has become an essential tool for data-driven analysis, prediction and control of complex systems, the main reason being the enormous potential of identifying linear function space representations of nonlinear\r\ndynamics from measurements. Until now, the situation where for large-scale systems, we (i) only have access to partial observations (i.e., measurements, as is very common for experimental data) or (ii) deliberately perform coarse\r\ngraining (for efficiency reasons) has not been treated to its full extent. In this paper, we address the pitfall associated with this situation, that the classical EDMD algorithm does not automatically provide a Koopman operator approximation for the underlying system if we do not carefully select the number of observables. Moreover, we show that symmetries in the system dynamics can be carried over to the Koopman operator, which allows us to massively increase the model efficiency. We also briefly draw a connection to domain decomposition techniques for partial differential equations and present numerical evidence using the Kuramoto--Sivashinsky equation.","lang":"eng"}],"external_id":{"arxiv":["2307.15325"]},"date_created":"2023-08-21T05:52:24Z","type":"preprint","oa":"1","department":[{"_id":"655"}]},{"user_id":"94996","volume":14,"publisher":"Elsevier BV","_id":"45602","status":"public","oa":"1","quality_controlled":"1","citation":{"ieee":"Y. Karakaya, H. Somnitz, A. Hermsen, M. Gonchikzhapov, and T. Kasper, “Revisiting the initial reaction rates for TMS combustion and a new evidence for metastable silica nanoparticles in the gas-phase synthesis,” <i>Applications in Energy and Combustion Science</i>, vol. 14, Art. no. 100152, 2023, doi: <a href=\"https://doi.org/10.1016/j.jaecs.2023.100152\">10.1016/j.jaecs.2023.100152</a>.","apa":"Karakaya, Y., Somnitz, H., Hermsen, A., Gonchikzhapov, M., &#38; Kasper, T. (2023). Revisiting the initial reaction rates for TMS combustion and a new evidence for metastable silica nanoparticles in the gas-phase synthesis. <i>Applications in Energy and Combustion Science</i>, <i>14</i>, Article 100152. <a href=\"https://doi.org/10.1016/j.jaecs.2023.100152\">https://doi.org/10.1016/j.jaecs.2023.100152</a>","short":"Y. Karakaya, H. Somnitz, A. Hermsen, M. Gonchikzhapov, T. Kasper, Applications in Energy and Combustion Science 14 (2023).","chicago":"Karakaya, Yasin, H. Somnitz, A. Hermsen, Munko Gonchikzhapov, and Tina Kasper. “Revisiting the Initial Reaction Rates for TMS Combustion and a New Evidence for Metastable Silica Nanoparticles in the Gas-Phase Synthesis.” <i>Applications in Energy and Combustion Science</i> 14 (2023). <a href=\"https://doi.org/10.1016/j.jaecs.2023.100152\">https://doi.org/10.1016/j.jaecs.2023.100152</a>.","mla":"Karakaya, Yasin, et al. “Revisiting the Initial Reaction Rates for TMS Combustion and a New Evidence for Metastable Silica Nanoparticles in the Gas-Phase Synthesis.” <i>Applications in Energy and Combustion Science</i>, vol. 14, 100152, Elsevier BV, 2023, doi:<a href=\"https://doi.org/10.1016/j.jaecs.2023.100152\">10.1016/j.jaecs.2023.100152</a>.","bibtex":"@article{Karakaya_Somnitz_Hermsen_Gonchikzhapov_Kasper_2023, title={Revisiting the initial reaction rates for TMS combustion and a new evidence for metastable silica nanoparticles in the gas-phase synthesis}, volume={14}, DOI={<a href=\"https://doi.org/10.1016/j.jaecs.2023.100152\">10.1016/j.jaecs.2023.100152</a>}, number={100152}, journal={Applications in Energy and Combustion Science}, publisher={Elsevier BV}, author={Karakaya, Yasin and Somnitz, H. and Hermsen, A. and Gonchikzhapov, Munko and Kasper, Tina}, year={2023} }","ama":"Karakaya Y, Somnitz H, Hermsen A, Gonchikzhapov M, Kasper T. Revisiting the initial reaction rates for TMS combustion and a new evidence for metastable silica nanoparticles in the gas-phase synthesis. <i>Applications in Energy and Combustion Science</i>. 2023;14. doi:<a href=\"https://doi.org/10.1016/j.jaecs.2023.100152\">10.1016/j.jaecs.2023.100152</a>"},"doi":"10.1016/j.jaecs.2023.100152","article_number":"100152","main_file_link":[{"open_access":"1","url":"https://www.sciencedirect.com/science/article/pii/S2666352X23000419"}],"language":[{"iso":"eng"}],"publication_status":"published","date_updated":"2023-08-22T20:03:29Z","intvolume":"        14","title":"Revisiting the initial reaction rates for TMS combustion and a new evidence for metastable silica nanoparticles in the gas-phase synthesis","year":"2023","publication_identifier":{"issn":["2666-352X"]},"author":[{"id":"95069","first_name":"Yasin","last_name":"Karakaya","full_name":"Karakaya, Yasin"},{"first_name":"H.","last_name":"Somnitz","full_name":"Somnitz, H."},{"full_name":"Hermsen, A.","last_name":"Hermsen","first_name":"A."},{"id":"94996","full_name":"Gonchikzhapov, Munko","first_name":"Munko","orcid":"https://orcid.org/0000-0002-7773-047X","last_name":"Gonchikzhapov"},{"orcid":"0000-0003-3993-5316 ","last_name":"Kasper","first_name":"Tina","full_name":"Kasper, Tina","id":"94562"}],"type":"journal_article","keyword":["Metastable particles","Nanomaterials","Quartz-crystal-microbalance","Molecular-beam mass spectrometry","Tetramethylsilane","Reaction kinetics"],"department":[{"_id":"728"}],"date_created":"2023-06-13T18:32:33Z","publication":"Applications in Energy and Combustion Science"},{"user_id":"47427","volume":33,"_id":"23428","status":"public","oa":"1","citation":{"ieee":"F. Nüske, S. Peitz, F. Philipp, M. Schaller, and K. Worthmann, “Finite-data error bounds for Koopman-based prediction and control,” <i>Journal of Nonlinear Science</i>, vol. 33, Art. no. 14, 2023, doi: <a href=\"https://doi.org/10.1007/s00332-022-09862-1\">10.1007/s00332-022-09862-1</a>.","apa":"Nüske, F., Peitz, S., Philipp, F., Schaller, M., &#38; Worthmann, K. (2023). Finite-data error bounds for Koopman-based prediction and control. <i>Journal of Nonlinear Science</i>, <i>33</i>, Article 14. <a href=\"https://doi.org/10.1007/s00332-022-09862-1\">https://doi.org/10.1007/s00332-022-09862-1</a>","short":"F. Nüske, S. Peitz, F. Philipp, M. Schaller, K. Worthmann, Journal of Nonlinear Science 33 (2023).","chicago":"Nüske, Feliks, Sebastian Peitz, Friedrich Philipp, Manuel Schaller, and Karl Worthmann. “Finite-Data Error Bounds for Koopman-Based Prediction and Control.” <i>Journal of Nonlinear Science</i> 33 (2023). <a href=\"https://doi.org/10.1007/s00332-022-09862-1\">https://doi.org/10.1007/s00332-022-09862-1</a>.","mla":"Nüske, Feliks, et al. “Finite-Data Error Bounds for Koopman-Based Prediction and Control.” <i>Journal of Nonlinear Science</i>, vol. 33, 14, 2023, doi:<a href=\"https://doi.org/10.1007/s00332-022-09862-1\">10.1007/s00332-022-09862-1</a>.","bibtex":"@article{Nüske_Peitz_Philipp_Schaller_Worthmann_2023, title={Finite-data error bounds for Koopman-based prediction and control}, volume={33}, DOI={<a href=\"https://doi.org/10.1007/s00332-022-09862-1\">10.1007/s00332-022-09862-1</a>}, number={14}, journal={Journal of Nonlinear Science}, author={Nüske, Feliks and Peitz, Sebastian and Philipp, Friedrich and Schaller, Manuel and Worthmann, Karl}, year={2023} }","ama":"Nüske F, Peitz S, Philipp F, Schaller M, Worthmann K. Finite-data error bounds for Koopman-based prediction and control. <i>Journal of Nonlinear Science</i>. 2023;33. doi:<a href=\"https://doi.org/10.1007/s00332-022-09862-1\">10.1007/s00332-022-09862-1</a>"},"doi":"10.1007/s00332-022-09862-1","main_file_link":[{"url":"https://link.springer.com/content/pdf/10.1007/s00332-022-09862-1.pdf","open_access":"1"}],"article_number":"14","language":[{"iso":"eng"}],"date_updated":"2023-08-24T07:50:12Z","publication_status":"published","intvolume":"        33","year":"2023","title":"Finite-data error bounds for Koopman-based prediction and control","author":[{"id":"81513","orcid":"0000-0003-2444-7889","first_name":"Feliks","last_name":"Nüske","full_name":"Nüske, Feliks"},{"id":"47427","first_name":"Sebastian","last_name":"Peitz","orcid":"0000-0002-3389-793X","full_name":"Peitz, Sebastian"},{"full_name":"Philipp, Friedrich","last_name":"Philipp","first_name":"Friedrich"},{"first_name":"Manuel","last_name":"Schaller","full_name":"Schaller, Manuel"},{"full_name":"Worthmann, Karl","first_name":"Karl","last_name":"Worthmann"}],"type":"journal_article","department":[{"_id":"101"},{"_id":"655"}],"date_created":"2021-08-17T12:25:09Z","abstract":[{"lang":"eng","text":"The Koopman operator has become an essential tool for data-driven approximation of dynamical (control) systems in recent years, e.g., via extended dynamic mode decomposition. Despite its popularity, convergence results and, in particular, error bounds are still quite scarce. In this paper, we derive probabilistic bounds for the approximation error and the prediction error depending on the number of training data points; for both ordinary and stochastic differential equations. Moreover, we extend our analysis to nonlinear control-affine systems using either ergodic trajectories or i.i.d.\r\nsamples. Here, we exploit the linearity of the Koopman generator to obtain a bilinear system and, thus, circumvent the curse of dimensionality since we do not autonomize the system by augmenting the state by the control inputs. To the\r\nbest of our knowledge, this is the first finite-data error analysis in the stochastic and/or control setting. Finally, we demonstrate the effectiveness of the proposed approach by comparing it with state-of-the-art techniques showing its superiority whenever state and control are coupled."}],"publication":"Journal of Nonlinear Science"},{"keyword":["Nanoparticle synthesis","Flame spray pyrolysis","SpraySyn burner","Flame structure","Species distribution","Temperature distribution"],"type":"journal_article","department":[{"_id":"43"}],"date_created":"2023-08-22T13:26:37Z","publication":"Applications in Energy and Combustion Science","doi":"10.1016/j.jaecs.2023.100174","main_file_link":[{"open_access":"1","url":"https://www.sciencedirect.com/science/article/pii/S2666352X23000638"}],"article_number":"100174","language":[{"iso":"eng"}],"date_updated":"2023-08-24T08:55:26Z","publication_status":"published","intvolume":"        15","year":"2023","title":"Thermal and chemical structure of ethanol and 2-ethylhexanoic acid/ethanol SpraySyn flames","author":[{"orcid":"https://orcid.org/0000-0002-7773-047X","last_name":"Gonchikzhapov","first_name":"Munko","full_name":"Gonchikzhapov, Munko","id":"94996"},{"id":"94562","first_name":"Tina","orcid":"0000-0003-3993-5316 ","last_name":"Kasper","full_name":"Kasper, Tina"}],"publication_identifier":{"issn":["2666-352X"]},"oa":"1","citation":{"ieee":"M. Gonchikzhapov and T. Kasper, “Thermal and chemical structure of ethanol and 2-ethylhexanoic acid/ethanol SpraySyn flames,” <i>Applications in Energy and Combustion Science</i>, vol. 15, Art. no. 100174, 2023, doi: <a href=\"https://doi.org/10.1016/j.jaecs.2023.100174\">10.1016/j.jaecs.2023.100174</a>.","apa":"Gonchikzhapov, M., &#38; Kasper, T. (2023). Thermal and chemical structure of ethanol and 2-ethylhexanoic acid/ethanol SpraySyn flames. <i>Applications in Energy and Combustion Science</i>, <i>15</i>, Article 100174. <a href=\"https://doi.org/10.1016/j.jaecs.2023.100174\">https://doi.org/10.1016/j.jaecs.2023.100174</a>","short":"M. Gonchikzhapov, T. Kasper, Applications in Energy and Combustion Science 15 (2023).","chicago":"Gonchikzhapov, Munko, and Tina Kasper. “Thermal and Chemical Structure of Ethanol and 2-Ethylhexanoic Acid/Ethanol SpraySyn Flames.” <i>Applications in Energy and Combustion Science</i> 15 (2023). <a href=\"https://doi.org/10.1016/j.jaecs.2023.100174\">https://doi.org/10.1016/j.jaecs.2023.100174</a>.","mla":"Gonchikzhapov, Munko, and Tina Kasper. “Thermal and Chemical Structure of Ethanol and 2-Ethylhexanoic Acid/Ethanol SpraySyn Flames.” <i>Applications in Energy and Combustion Science</i>, vol. 15, 100174, Elsevier BV, 2023, doi:<a href=\"https://doi.org/10.1016/j.jaecs.2023.100174\">10.1016/j.jaecs.2023.100174</a>.","bibtex":"@article{Gonchikzhapov_Kasper_2023, title={Thermal and chemical structure of ethanol and 2-ethylhexanoic acid/ethanol SpraySyn flames}, volume={15}, DOI={<a href=\"https://doi.org/10.1016/j.jaecs.2023.100174\">10.1016/j.jaecs.2023.100174</a>}, number={100174}, journal={Applications in Energy and Combustion Science}, publisher={Elsevier BV}, author={Gonchikzhapov, Munko and Kasper, Tina}, year={2023} }","ama":"Gonchikzhapov M, Kasper T. Thermal and chemical structure of ethanol and 2-ethylhexanoic acid/ethanol SpraySyn flames. <i>Applications in Energy and Combustion Science</i>. 2023;15. doi:<a href=\"https://doi.org/10.1016/j.jaecs.2023.100174\">10.1016/j.jaecs.2023.100174</a>"},"user_id":"94996","volume":15,"_id":"46637","publisher":"Elsevier BV","status":"public"},{"title":"ElectricGrid.jl - A Julia-based modeling and simulationtool for power electronics-driven electric energy grids","year":"2023","publication_identifier":{"issn":["2475-9066"]},"author":[{"id":"11291","full_name":"Wallscheid, Oliver","first_name":"Oliver","orcid":"https://orcid.org/0000-0001-9362-8777","last_name":"Wallscheid"},{"full_name":"Peitz, Sebastian","orcid":"0000-0002-3389-793X","last_name":"Peitz","first_name":"Sebastian","id":"47427"},{"first_name":"Jan","last_name":"Stenner","full_name":"Stenner, Jan","id":"65520"},{"orcid":"0000-0003-3367-5998","last_name":"Weber","first_name":"Daniel","full_name":"Weber, Daniel","id":"24041"},{"last_name":"Boshoff","first_name":"Septimus","full_name":"Boshoff, Septimus"},{"first_name":"Marvin","last_name":"Meyer","full_name":"Meyer, Marvin"},{"full_name":"Chidananda, Vikas","last_name":"Chidananda","first_name":"Vikas"},{"full_name":"Schweins, Oliver","first_name":"Oliver","last_name":"Schweins"}],"date_updated":"2023-09-04T11:06:06Z","publication_status":"published","intvolume":"         8","main_file_link":[{"url":"https://joss.theoj.org/papers/10.21105/joss.05616","open_access":"1"}],"article_number":"5616","language":[{"iso":"eng"}],"doi":"10.21105/joss.05616","publication":"Journal of Open Source Software","issue":"89","date_created":"2023-09-04T11:05:03Z","keyword":["General Earth and Planetary Sciences","General Environmental Science"],"type":"journal_article","department":[{"_id":"655"},{"_id":"52"}],"status":"public","_id":"46784","publisher":"The Open Journal","user_id":"47427","volume":8,"citation":{"ieee":"O. Wallscheid <i>et al.</i>, “ElectricGrid.jl - A Julia-based modeling and simulationtool for power electronics-driven electric energy grids,” <i>Journal of Open Source Software</i>, vol. 8, no. 89, Art. no. 5616, 2023, doi: <a href=\"https://doi.org/10.21105/joss.05616\">10.21105/joss.05616</a>.","apa":"Wallscheid, O., Peitz, S., Stenner, J., Weber, D., Boshoff, S., Meyer, M., Chidananda, V., &#38; Schweins, O. (2023). ElectricGrid.jl - A Julia-based modeling and simulationtool for power electronics-driven electric energy grids. <i>Journal of Open Source Software</i>, <i>8</i>(89), Article 5616. <a href=\"https://doi.org/10.21105/joss.05616\">https://doi.org/10.21105/joss.05616</a>","short":"O. Wallscheid, S. Peitz, J. Stenner, D. Weber, S. Boshoff, M. Meyer, V. Chidananda, O. Schweins, Journal of Open Source Software 8 (2023).","chicago":"Wallscheid, Oliver, Sebastian Peitz, Jan Stenner, Daniel Weber, Septimus Boshoff, Marvin Meyer, Vikas Chidananda, and Oliver Schweins. “ElectricGrid.Jl - A Julia-Based Modeling and Simulationtool for Power Electronics-Driven Electric Energy Grids.” <i>Journal of Open Source Software</i> 8, no. 89 (2023). <a href=\"https://doi.org/10.21105/joss.05616\">https://doi.org/10.21105/joss.05616</a>.","mla":"Wallscheid, Oliver, et al. “ElectricGrid.Jl - A Julia-Based Modeling and Simulationtool for Power Electronics-Driven Electric Energy Grids.” <i>Journal of Open Source Software</i>, vol. 8, no. 89, 5616, The Open Journal, 2023, doi:<a href=\"https://doi.org/10.21105/joss.05616\">10.21105/joss.05616</a>.","bibtex":"@article{Wallscheid_Peitz_Stenner_Weber_Boshoff_Meyer_Chidananda_Schweins_2023, title={ElectricGrid.jl - A Julia-based modeling and simulationtool for power electronics-driven electric energy grids}, volume={8}, DOI={<a href=\"https://doi.org/10.21105/joss.05616\">10.21105/joss.05616</a>}, number={895616}, journal={Journal of Open Source Software}, publisher={The Open Journal}, author={Wallscheid, Oliver and Peitz, Sebastian and Stenner, Jan and Weber, Daniel and Boshoff, Septimus and Meyer, Marvin and Chidananda, Vikas and Schweins, Oliver}, year={2023} }","ama":"Wallscheid O, Peitz S, Stenner J, et al. ElectricGrid.jl - A Julia-based modeling and simulationtool for power electronics-driven electric energy grids. <i>Journal of Open Source Software</i>. 2023;8(89). doi:<a href=\"https://doi.org/10.21105/joss.05616\">10.21105/joss.05616</a>"},"oa":"1"},{"has_accepted_license":"1","status":"public","ddc":["370"],"user_id":"58041","volume":76,"page":"314-320","publisher":"Verlag Klaus Seeberger","_id":"46186","file_date_updated":"2023-09-06T14:10:52Z","citation":{"bibtex":"@article{Höper_Schulte_2023, title={Paradigmenwechsel vom klassischen zum datengetriebenen Problemlösen im Informatikunterricht}, volume={76}, number={4}, journal={MNU journal}, publisher={Verlag Klaus Seeberger}, author={Höper, Lukas and Schulte, Carsten}, year={2023}, pages={314–320} }","ama":"Höper L, Schulte C. Paradigmenwechsel vom klassischen zum datengetriebenen Problemlösen im Informatikunterricht. <i>MNU journal</i>. 2023;76(4):314-320.","mla":"Höper, Lukas, and Carsten Schulte. “Paradigmenwechsel vom klassischen zum datengetriebenen Problemlösen im Informatikunterricht.” <i>MNU journal</i>, vol. 76, no. 4, Verlag Klaus Seeberger, 2023, pp. 314–20.","short":"L. Höper, C. Schulte, MNU journal 76 (2023) 314–320.","chicago":"Höper, Lukas, and Carsten Schulte. “Paradigmenwechsel vom klassischen zum datengetriebenen Problemlösen im Informatikunterricht.” <i>MNU journal</i> 76, no. 4 (2023): 314–20.","ieee":"L. Höper and C. Schulte, “Paradigmenwechsel vom klassischen zum datengetriebenen Problemlösen im Informatikunterricht,” <i>MNU journal</i>, vol. 76, no. 4, pp. 314–320, 2023.","apa":"Höper, L., &#38; Schulte, C. (2023). Paradigmenwechsel vom klassischen zum datengetriebenen Problemlösen im Informatikunterricht. <i>MNU journal</i>, <i>76</i>(4), 314–320."},"oa":"1","date_updated":"2023-09-06T14:12:35Z","intvolume":"        76","title":"Paradigmenwechsel vom klassischen zum datengetriebenen Problemlösen im Informatikunterricht","year":"2023","publication_identifier":{"issn":["0025-5866"]},"author":[{"id":"58041","full_name":"Höper, Lukas","first_name":"Lukas","last_name":"Höper"},{"id":"60311","last_name":"Schulte","first_name":"Carsten","full_name":"Schulte, Carsten"}],"language":[{"iso":"ger"}],"related_material":{"link":[{"relation":"other","url":"https://www.mnu.de/zeitschriften/795-mnu-heft-2023-04"}]},"publication":"MNU journal","issue":"4","type":"journal_article","department":[{"_id":"67"}],"file":[{"date_created":"2023-07-28T05:56:19Z","creator":"hoeper","file_id":"46187","content_type":"application/pdf","relation":"main_file","date_updated":"2023-09-06T14:10:52Z","file_name":"MNU_journal_04_314-320.pdf","file_size":615313,"access_level":"open_access"}],"date_created":"2023-07-28T05:58:37Z"},{"author":[{"full_name":"Blömer, Johannes","last_name":"Blömer","first_name":"Johannes","id":"23"},{"id":"27207","full_name":"Bobolz, Jan","last_name":"Bobolz","first_name":"Jan"},{"first_name":"Henrik","last_name":"Bröcher","full_name":"Bröcher, Henrik","id":"41047"}],"conference":{"end_date":"2023-12-02","name":"TCC 2023","start_date":"2023-11-29","location":"Taipeh, Taiwan"},"year":"2023","title":"On the impossibility of surviving (iterated) deletion of weakly dominated strategies in rational MPC","status":"public","date_updated":"2023-09-07T10:01:00Z","language":[{"iso":"eng"}],"_id":"35014","main_file_link":[{"open_access":"1","url":"https://eprint.iacr.org/2022/1762"}],"user_id":"41047","citation":{"mla":"Blömer, Johannes, et al. <i>On the Impossibility of Surviving (Iterated) Deletion of Weakly Dominated Strategies in Rational MPC</i>. 2023.","bibtex":"@inproceedings{Blömer_Bobolz_Bröcher_2023, title={On the impossibility of surviving (iterated) deletion of weakly dominated strategies in rational MPC}, author={Blömer, Johannes and Bobolz, Jan and Bröcher, Henrik}, year={2023} }","ama":"Blömer J, Bobolz J, Bröcher H. On the impossibility of surviving (iterated) deletion of weakly dominated strategies in rational MPC. In: ; 2023.","ieee":"J. Blömer, J. Bobolz, and H. Bröcher, “On the impossibility of surviving (iterated) deletion of weakly dominated strategies in rational MPC,” presented at the TCC 2023, Taipeh, Taiwan, 2023.","apa":"Blömer, J., Bobolz, J., &#38; Bröcher, H. (2023). <i>On the impossibility of surviving (iterated) deletion of weakly dominated strategies in rational MPC</i>. TCC 2023, Taipeh, Taiwan.","chicago":"Blömer, Johannes, Jan Bobolz, and Henrik Bröcher. “On the Impossibility of Surviving (Iterated) Deletion of Weakly Dominated Strategies in Rational MPC,” 2023.","short":"J. Blömer, J. Bobolz, H. Bröcher, in: 2023."},"project":[{"name":"SFB 901: SFB 901","_id":"1","grant_number":"160364472"},{"name":"SFB 901 - C: SFB 901 - Project Area C","_id":"4"},{"name":"SFB 901 - C1: SFB 901 - Subproject C1","_id":"13"}],"date_created":"2022-12-28T16:02:11Z","department":[{"_id":"34"},{"_id":"64"}],"oa":"1","type":"conference"},{"main_file_link":[{"open_access":"1","url":"https://eprint.iacr.org/2023/464"}],"_id":"43458","language":[{"iso":"eng"}],"user_id":"47434","status":"public","year":"2023","title":"A Generic Construction of an Anonymous Reputation System and Instantiations from Lattices","conference":{"end_date":"2023-12-08","location":"Guangzhou, China","name":"Asiacrypt 2023","start_date":"2023-12-04"},"author":[{"last_name":"Blömer","first_name":"Johannes","full_name":"Blömer, Johannes","id":"23"},{"id":"27207","first_name":"Jan","last_name":"Bobolz","full_name":"Bobolz, Jan"},{"full_name":"Porzenheim, Laurens Alexander","first_name":"Laurens Alexander","last_name":"Porzenheim","id":"47434"}],"date_updated":"2023-09-07T09:53:26Z","date_created":"2023-04-12T08:18:41Z","type":"conference","oa":"1","department":[{"_id":"64"}],"citation":{"ieee":"J. Blömer, J. Bobolz, and L. A. Porzenheim, “A Generic Construction of an Anonymous Reputation System and Instantiations from Lattices,” presented at the Asiacrypt 2023, Guangzhou, China, 2023.","apa":"Blömer, J., Bobolz, J., &#38; Porzenheim, L. A. (2023). <i>A Generic Construction of an Anonymous Reputation System and Instantiations from Lattices</i>. Asiacrypt 2023, Guangzhou, China.","short":"J. Blömer, J. Bobolz, L.A. Porzenheim, in: 2023.","chicago":"Blömer, Johannes, Jan Bobolz, and Laurens Alexander Porzenheim. “A Generic Construction of an Anonymous Reputation System and Instantiations from Lattices,” 2023.","mla":"Blömer, Johannes, et al. <i>A Generic Construction of an Anonymous Reputation System and Instantiations from Lattices</i>. 2023.","bibtex":"@inproceedings{Blömer_Bobolz_Porzenheim_2023, title={A Generic Construction of an Anonymous Reputation System and Instantiations from Lattices}, author={Blömer, Johannes and Bobolz, Jan and Porzenheim, Laurens Alexander}, year={2023} }","ama":"Blömer J, Bobolz J, Porzenheim LA. A Generic Construction of an Anonymous Reputation System and Instantiations from Lattices. In: ; 2023."},"project":[{"name":"SFB 901: SFB 901","_id":"1","grant_number":"160364472"},{"_id":"13","name":"SFB 901 - C1: SFB 901 - Subproject C1"},{"name":"SFB 901 - C: SFB 901 - Project Area C","_id":"4"}]},{"oa":"1","quality_controlled":"1","citation":{"chicago":"Kletetzka, Ivo, Maren Kosanke, Dennis Meinderink, Vanessa Neßlinger, Guido Grundmeier, and Hans-Joachim Schmid. “Influence of the Filler–Matrix Adhesion and the Effects of Conditioning on Tensile Properties of Laser-Sintered Parts Built with Polyamide–Glass Bead Dry Blends.” <i>Progress in Additive Manufacturing</i>, 2023. <a href=\"https://doi.org/10.1007/s40964-023-00501-z\">https://doi.org/10.1007/s40964-023-00501-z</a>.","short":"I. Kletetzka, M. Kosanke, D. Meinderink, V. Neßlinger, G. Grundmeier, H.-J. Schmid, Progress in Additive Manufacturing (2023).","ieee":"I. Kletetzka, M. Kosanke, D. Meinderink, V. Neßlinger, G. Grundmeier, and H.-J. Schmid, “Influence of the filler–matrix adhesion and the effects of conditioning on tensile properties of laser-sintered parts built with polyamide–glass bead dry blends,” <i>Progress in Additive Manufacturing</i>, 2023, doi: <a href=\"https://doi.org/10.1007/s40964-023-00501-z\">10.1007/s40964-023-00501-z</a>.","apa":"Kletetzka, I., Kosanke, M., Meinderink, D., Neßlinger, V., Grundmeier, G., &#38; Schmid, H.-J. (2023). Influence of the filler–matrix adhesion and the effects of conditioning on tensile properties of laser-sintered parts built with polyamide–glass bead dry blends. <i>Progress in Additive Manufacturing</i>. <a href=\"https://doi.org/10.1007/s40964-023-00501-z\">https://doi.org/10.1007/s40964-023-00501-z</a>","bibtex":"@article{Kletetzka_Kosanke_Meinderink_Neßlinger_Grundmeier_Schmid_2023, title={Influence of the filler–matrix adhesion and the effects of conditioning on tensile properties of laser-sintered parts built with polyamide–glass bead dry blends}, DOI={<a href=\"https://doi.org/10.1007/s40964-023-00501-z\">10.1007/s40964-023-00501-z</a>}, journal={Progress in Additive Manufacturing}, publisher={Springer Science and Business Media LLC}, author={Kletetzka, Ivo and Kosanke, Maren and Meinderink, Dennis and Neßlinger, Vanessa and Grundmeier, Guido and Schmid, Hans-Joachim}, year={2023} }","ama":"Kletetzka I, Kosanke M, Meinderink D, Neßlinger V, Grundmeier G, Schmid H-J. Influence of the filler–matrix adhesion and the effects of conditioning on tensile properties of laser-sintered parts built with polyamide–glass bead dry blends. <i>Progress in Additive Manufacturing</i>. Published online 2023. doi:<a href=\"https://doi.org/10.1007/s40964-023-00501-z\">10.1007/s40964-023-00501-z</a>","mla":"Kletetzka, Ivo, et al. “Influence of the Filler–Matrix Adhesion and the Effects of Conditioning on Tensile Properties of Laser-Sintered Parts Built with Polyamide–Glass Bead Dry Blends.” <i>Progress in Additive Manufacturing</i>, Springer Science and Business Media LLC, 2023, doi:<a href=\"https://doi.org/10.1007/s40964-023-00501-z\">10.1007/s40964-023-00501-z</a>."},"user_id":"50769","publisher":"Springer Science and Business Media LLC","_id":"46815","status":"public","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"},{"_id":"9"}],"keyword":["Industrial and Manufacturing Engineering"],"type":"journal_article","date_created":"2023-09-06T06:49:38Z","abstract":[{"text":"In this work, the influence of the filler–matrix adhesion on the tensile properties of laser-sintered parts built with Polyamide 613 filled with glass beads was investigated. For this purpose, dry blends of glass beads with and without organosilane coupling agents and polyamide powder were prepared and processed into tensile specimens on an EOS P396 laser sintering system. The samples were tested both in the dry state and after an accelerated conditioning in a climate chamber. Furthermore, finite element method (FEM) simulations were performed to model the extreme cases of optimum adhesion and no adhesion. By correlating the tensile tests with the simulation results and by analyzing the fracture surfaces, it was shown that the filler–matrix adhesion is sufficient in the dry state but is strongly degraded by conditioning. Even the presence of various organosilane thin films could not prevent a strong deterioration of the filler–matrix adhesion and the associated deterioration of the mechanical properties. Since a comparison with an injection-molded sample of the same polymer filler combination shows identical behavior after conditioning, it is assumed that this problem is not limited to additively manufactured parts.","lang":"eng"}],"publication":"Progress in Additive Manufacturing","doi":"10.1007/s40964-023-00501-z","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://rdcu.be/dlqzG","open_access":"1"}],"publication_status":"published","date_updated":"2023-09-07T11:51:01Z","publication_identifier":{"issn":["2363-9512","2363-9520"]},"author":[{"id":"50769","first_name":"Ivo","last_name":"Kletetzka","full_name":"Kletetzka, Ivo"},{"last_name":"Kosanke","first_name":"Maren","full_name":"Kosanke, Maren"},{"full_name":"Meinderink, Dennis","last_name":"Meinderink","first_name":"Dennis"},{"full_name":"Neßlinger, Vanessa","last_name":"Neßlinger","first_name":"Vanessa"},{"id":"194","full_name":"Grundmeier, Guido","first_name":"Guido","last_name":"Grundmeier"},{"first_name":"Hans-Joachim","last_name":"Schmid","orcid":"000-0001-8590-1921","full_name":"Schmid, Hans-Joachim","id":"464"}],"year":"2023","title":"Influence of the filler–matrix adhesion and the effects of conditioning on tensile properties of laser-sintered parts built with polyamide–glass bead dry blends"},{"date_created":"2023-03-20T09:13:23Z","oa":"1","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"},{"_id":"9"}],"type":"preprint","citation":{"ieee":"I. Kletetzka, M. Kosanke, D. Meinderink, V. Neßlinger, G. Grundmeier, and H.-J. Schmid, “Influence of the filler matrix adhesion and the effects of conditioning on tensile properties of laser sintered parts built with polyamide glass bead dry blends.” Research Square Platform LLC, 2023.","apa":"Kletetzka, I., Kosanke, M., Meinderink, D., Neßlinger, V., Grundmeier, G., &#38; Schmid, H.-J. (2023). <i>Influence of the filler matrix adhesion and the effects of conditioning on tensile properties of laser sintered parts built with polyamide glass bead dry blends</i>. Research Square Platform LLC.","short":"I. Kletetzka, M. Kosanke, D. Meinderink, V. Neßlinger, G. Grundmeier, H.-J. Schmid, (2023).","chicago":"Kletetzka, Ivo, Maren Kosanke, Dennis Meinderink, Vanessa Neßlinger, Guido Grundmeier, and Hans-Joachim Schmid. “Influence of the Filler Matrix Adhesion and the Effects of Conditioning on Tensile Properties of Laser Sintered Parts Built with Polyamide Glass Bead Dry Blends.” Research Square Platform LLC, 2023.","mla":"Kletetzka, Ivo, et al. <i>Influence of the Filler Matrix Adhesion and the Effects of Conditioning on Tensile Properties of Laser Sintered Parts Built with Polyamide Glass Bead Dry Blends</i>. Research Square Platform LLC, 2023.","bibtex":"@article{Kletetzka_Kosanke_Meinderink_Neßlinger_Grundmeier_Schmid_2023, title={Influence of the filler matrix adhesion and the effects of conditioning on tensile properties of laser sintered parts built with polyamide glass bead dry blends}, publisher={Research Square Platform LLC}, author={Kletetzka, Ivo and Kosanke, Maren and Meinderink, Dennis and Neßlinger, Vanessa and Grundmeier, Guido and Schmid, Hans-Joachim}, year={2023} }","ama":"Kletetzka I, Kosanke M, Meinderink D, Neßlinger V, Grundmeier G, Schmid H-J. Influence of the filler matrix adhesion and the effects of conditioning on tensile properties of laser sintered parts built with polyamide glass bead dry blends. Published online 2023."},"abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title>\r\n        <jats:p>In this work, the influence of the filler matrix adhesion on the tensile properties of laser-sintered parts built with Polyamide 613 filled with glass beads was investigated. For this purpose, dry blends of glass beads with and without organosilane coupling agents and polyamide powder were prepared and processed into tensile specimens on an EOS P396. The samples were tested both in the dry state and after an accelerated conditioning in a climate chamber. Furthermore, FEM simulations were performed to model the limiting cases of optimum adhesion and no adhesion. By correlating the tensile tests with the simulation results and by analyzing the fracture surfaces, it was shown that the filler matrix adhesion is sufficient in the dry state but is strongly degraded by conditioning. Even the presence of various organosilane thin films could not prevent a strong deterioration of the filler-matrix adhesion and the associated deterioration of the mechanical properties. Since a comparison with an injection molded sample of the same polymer filler combination shows identical behavior after conditioning, it is assumed that this problem is not limited to additively manufactured parts.</jats:p>"}],"_id":"43049","publisher":"Research Square Platform LLC","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://www.researchsquare.com/article/rs-2664324/v1","open_access":"1"}],"user_id":"50769","author":[{"full_name":"Kletetzka, Ivo","last_name":"Kletetzka","first_name":"Ivo"},{"full_name":"Kosanke, Maren","last_name":"Kosanke","first_name":"Maren"},{"last_name":"Meinderink","first_name":"Dennis","full_name":"Meinderink, Dennis"},{"last_name":"Neßlinger","first_name":"Vanessa","full_name":"Neßlinger, Vanessa"},{"last_name":"Grundmeier","first_name":"Guido","full_name":"Grundmeier, Guido"},{"full_name":"Schmid, Hans-Joachim","first_name":"Hans-Joachim","last_name":"Schmid"}],"status":"public","title":"Influence of the filler matrix adhesion and the effects of conditioning on tensile properties of laser sintered parts built with polyamide glass bead dry blends","year":"2023","date_updated":"2023-09-07T11:52:39Z","publication_status":"published"},{"doi":"https://doi.org/10.1007/s00170-023-11243-1","language":[{"iso":"eng"}],"main_file_link":[{"open_access":"1","url":"https://link.springer.com/article/10.1007/s00170-023-11243-1"}],"publication_status":"published","date_updated":"2023-09-07T11:57:59Z","author":[{"id":"71545","first_name":"Sven Helge","last_name":"Klippstein","full_name":"Klippstein, Sven Helge"},{"last_name":"Kletetzka","first_name":"Ivo","full_name":"Kletetzka, Ivo","id":"50769"},{"last_name":"Sural","first_name":"Ilknur","full_name":"Sural, Ilknur"},{"id":"464","last_name":"Schmid","orcid":"000-0001-8590-1921","first_name":"Hans-Joachim","full_name":"Schmid, Hans-Joachim"}],"title":"Influence of a prolonged shelf time on PA12 laser sintering powder and resulting part properties","year":"2023","department":[{"_id":"150"},{"_id":"624"},{"_id":"219"},{"_id":"9"}],"keyword":["Selective laser sintering","Shelf life","Polyamide 12","powder","PA2200","material ageing"],"type":"journal_article","date_created":"2023-03-18T14:28:46Z","abstract":[{"text":"In the laser sintering technology, the semi-crystalline polymer material is exposed to elevated temperatures during processing, which leads to serious material ageing for most materials. This has already been investigated intensively by various authors. However, the ageing of the material at ambient temperatures during shelf life has not been the focus so far. The need to analyse the shelf life can be derived from an ecological and economic point of view. This work is focusing on the shelf life of PA2200 (PA12). To reduce the potential influences of powder production fluctuations, two different powder batches stored for 5.5 years and 6.5 years are investigated and compared to a reference powder produced 0.5 years before these investigations. Multiple powder analyses and part characterisations have been performed. A significant yellowing and molecular chain length reduction can be derived from the measurement results. Whereas the influence on mechanical part performance was minor, the parts built with the stored powders are more yellowish. As it is most likely that this is due to the consumption of polyamide stabilisers, it can be assumed that these parts will be subject to significantly faster ageing. Therefore, it is still not recommended to use the stored powders for critical parts or light intense and humid environments.","lang":"eng"}],"publication":"The International Journal of Advanced Manufacturing Technology ","user_id":"50769","_id":"43046","publisher":"Springer","status":"public","oa":"1","quality_controlled":"1","citation":{"bibtex":"@article{Klippstein_Kletetzka_Sural_Schmid_2023, title={Influence of a prolonged shelf time on PA12 laser sintering powder and resulting part properties}, DOI={<a href=\"https://doi.org/10.1007/s00170-023-11243-1\">https://doi.org/10.1007/s00170-023-11243-1</a>}, journal={The International Journal of Advanced Manufacturing Technology }, publisher={Springer}, author={Klippstein, Sven Helge and Kletetzka, Ivo and Sural, Ilknur and Schmid, Hans-Joachim}, year={2023} }","ama":"Klippstein SH, Kletetzka I, Sural I, Schmid H-J. Influence of a prolonged shelf time on PA12 laser sintering powder and resulting part properties. <i>The International Journal of Advanced Manufacturing Technology </i>. Published online 2023. doi:<a href=\"https://doi.org/10.1007/s00170-023-11243-1\">https://doi.org/10.1007/s00170-023-11243-1</a>","short":"S.H. Klippstein, I. Kletetzka, I. Sural, H.-J. Schmid, The International Journal of Advanced Manufacturing Technology  (2023).","chicago":"Klippstein, Sven Helge, Ivo Kletetzka, Ilknur Sural, and Hans-Joachim Schmid. “Influence of a Prolonged Shelf Time on PA12 Laser Sintering Powder and Resulting Part Properties.” <i>The International Journal of Advanced Manufacturing Technology </i>, 2023. <a href=\"https://doi.org/10.1007/s00170-023-11243-1\">https://doi.org/10.1007/s00170-023-11243-1</a>.","ieee":"S. H. Klippstein, I. Kletetzka, I. Sural, and H.-J. Schmid, “Influence of a prolonged shelf time on PA12 laser sintering powder and resulting part properties,” <i>The International Journal of Advanced Manufacturing Technology </i>, 2023, doi: <a href=\"https://doi.org/10.1007/s00170-023-11243-1\">https://doi.org/10.1007/s00170-023-11243-1</a>.","mla":"Klippstein, Sven Helge, et al. “Influence of a Prolonged Shelf Time on PA12 Laser Sintering Powder and Resulting Part Properties.” <i>The International Journal of Advanced Manufacturing Technology </i>, Springer, 2023, doi:<a href=\"https://doi.org/10.1007/s00170-023-11243-1\">https://doi.org/10.1007/s00170-023-11243-1</a>.","apa":"Klippstein, S. H., Kletetzka, I., Sural, I., &#38; Schmid, H.-J. (2023). Influence of a prolonged shelf time on PA12 laser sintering powder and resulting part properties. <i>The International Journal of Advanced Manufacturing Technology </i>. <a href=\"https://doi.org/10.1007/s00170-023-11243-1\">https://doi.org/10.1007/s00170-023-11243-1</a>"}},{"abstract":[{"lang":"eng","text":"»Über Geld spricht man nicht.« Diese Benimmregel erweist sich beim Blick in die Ver-\r\ngangenheit als Illusion. Keineswegs war Geld grundsätzlich ein Tabuthema zwischen-\r\nmenschlicher Kommunikation. Ganz im Gegenteil: Mit dem Reden über Geld wird dieses\r\nmit Bedeutung aufgeladen. Die Autor*innen dieses Themenheftes untersuch en Gelddis-\r\nkurse und die Zuschreibungen von Bedeutung an Geld in der internationalen Geschichte."}],"publication":"Werkstatt Geschichte","department":[{"_id":"445"}],"type":"journal_article","keyword":["Financial History","Discourse Analysis","History of Money"],"date_created":"2023-09-21T13:29:50Z","file":[{"file_id":"47156","content_type":"application/pdf","success":1,"file_name":"Schönhärl Schotters Thiemeyer Editorial Reden über Geld.pdf","access_level":"closed","file_size":275465,"relation":"main_file","date_updated":"2023-09-21T13:25:41Z","date_created":"2023-09-21T13:25:41Z","creator":"schoenha"}],"intvolume":"        88","article_type":"original","date_updated":"2023-09-21T13:30:14Z","publication_status":"published","author":[{"full_name":"Schönhärl, Korinna","last_name":"Schönhärl","first_name":"Korinna","orcid":"0000-0002-7967-3261","id":"89037"},{"first_name":"Frederike ","last_name":"Schotters","full_name":"Schotters, Frederike "},{"last_name":"Thiemeyer","first_name":"Guido","full_name":"Thiemeyer, Guido"}],"title":"Editorial","year":"2023","language":[{"iso":"ger"}],"main_file_link":[{"url":"https://werkstattgeschichte.de/wp-content/uploads/2023/09/WG88_009-014_EDITORIAL.pdf","open_access":"1"}],"quality_controlled":"1","citation":{"ama":"Schönhärl K, Schotters F, Thiemeyer G. Editorial. <i>Werkstatt Geschichte</i>. 2023;88.","bibtex":"@article{Schönhärl_Schotters_Thiemeyer_2023, title={Editorial}, volume={88}, journal={Werkstatt Geschichte}, author={Schönhärl, Korinna and Schotters, Frederike  and Thiemeyer, Guido}, year={2023} }","mla":"Schönhärl, Korinna, et al. “Editorial.” <i>Werkstatt Geschichte</i>, vol. 88, 2023.","short":"K. Schönhärl, F. Schotters, G. Thiemeyer, Werkstatt Geschichte 88 (2023).","chicago":"Schönhärl, Korinna, Frederike  Schotters, and Guido Thiemeyer. “Editorial.” <i>Werkstatt Geschichte</i> 88 (2023).","apa":"Schönhärl, K., Schotters, F., &#38; Thiemeyer, G. (2023). Editorial. <i>Werkstatt Geschichte</i>, <i>88</i>.","ieee":"K. Schönhärl, F. Schotters, and G. Thiemeyer, “Editorial,” <i>Werkstatt Geschichte</i>, vol. 88, 2023."},"file_date_updated":"2023-09-21T13:25:41Z","oa":"1","has_accepted_license":"1","jel":["N40"],"status":"public","volume":88,"ddc":["900"],"user_id":"89037","_id":"47155"},{"user_id":"77313","publisher":"Wiley","_id":"46813","status":"public","oa":"1","quality_controlled":"1","citation":{"short":"M.C. Wohlleben, L. Muth, S. Peitz, W. Sextro, in: Proceedings in Applied Mathematics and Mechanics, Wiley, 2023.","chicago":"Wohlleben, Meike Claudia, Lars Muth, Sebastian Peitz, and Walter Sextro. “Transferability of a Discrepancy Model for the Dynamics of Electromagnetic Oscillating Circuits.” In <i>Proceedings in Applied Mathematics and Mechanics</i>. Wiley, 2023. <a href=\"https://doi.org/10.1002/pamm.202300039\">https://doi.org/10.1002/pamm.202300039</a>.","apa":"Wohlleben, M. C., Muth, L., Peitz, S., &#38; Sextro, W. (2023). Transferability of a discrepancy model for the dynamics of electromagnetic oscillating circuits. <i>Proceedings in Applied Mathematics and Mechanics</i>. <a href=\"https://doi.org/10.1002/pamm.202300039\">https://doi.org/10.1002/pamm.202300039</a>","ieee":"M. C. Wohlleben, L. Muth, S. Peitz, and W. Sextro, “Transferability of a discrepancy model for the dynamics of electromagnetic oscillating circuits,” 2023, doi: <a href=\"https://doi.org/10.1002/pamm.202300039\">10.1002/pamm.202300039</a>.","ama":"Wohlleben MC, Muth L, Peitz S, Sextro W. Transferability of a discrepancy model for the dynamics of electromagnetic oscillating circuits. In: <i>Proceedings in Applied Mathematics and Mechanics</i>. Wiley; 2023. doi:<a href=\"https://doi.org/10.1002/pamm.202300039\">10.1002/pamm.202300039</a>","bibtex":"@inproceedings{Wohlleben_Muth_Peitz_Sextro_2023, title={Transferability of a discrepancy model for the dynamics of electromagnetic oscillating circuits}, DOI={<a href=\"https://doi.org/10.1002/pamm.202300039\">10.1002/pamm.202300039</a>}, booktitle={Proceedings in Applied Mathematics and Mechanics}, publisher={Wiley}, author={Wohlleben, Meike Claudia and Muth, Lars and Peitz, Sebastian and Sextro, Walter}, year={2023} }","mla":"Wohlleben, Meike Claudia, et al. “Transferability of a Discrepancy Model for the Dynamics of Electromagnetic Oscillating Circuits.” <i>Proceedings in Applied Mathematics and Mechanics</i>, Wiley, 2023, doi:<a href=\"https://doi.org/10.1002/pamm.202300039\">10.1002/pamm.202300039</a>."},"doi":"10.1002/pamm.202300039","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/pamm.202300039","open_access":"1"}],"date_updated":"2023-09-21T14:47:20Z","publication_status":"published","author":[{"id":"43991","full_name":"Wohlleben, Meike Claudia","last_name":"Wohlleben","orcid":"0009-0009-9767-7168","first_name":"Meike Claudia"},{"last_name":"Muth","orcid":"0000-0002-2938-5616","first_name":"Lars","full_name":"Muth, Lars","id":"77313"},{"id":"47427","full_name":"Peitz, Sebastian","last_name":"Peitz","orcid":"0000-0002-3389-793X","first_name":"Sebastian"},{"id":"21220","last_name":"Sextro","first_name":"Walter","full_name":"Sextro, Walter"}],"publication_identifier":{"issn":["1617-7061","1617-7061"]},"year":"2023","title":"Transferability of a discrepancy model for the dynamics of electromagnetic oscillating circuits","department":[{"_id":"655"},{"_id":"151"}],"type":"conference","keyword":["Electrical and Electronic Engineering","Atomic and Molecular Physics","and Optics"],"date_created":"2023-09-06T05:18:05Z","abstract":[{"lang":"eng","text":"Modelling of dynamic systems plays an important role in many engineering disciplines. Two different approaches are physical modelling and data‐driven modelling, both of which have their respective advantages and disadvantages. By combining these two approaches, hybrid models can be created in which the respective disadvantages are mitigated, with discrepancy models being a particular subclass. Here, the basic system behaviour is described physically, that is, in the form of differential equations. Inaccuracies resulting from insufficient modelling or numerics lead to a discrepancy between the measurements and the model, which can be compensated by a data‐driven error correction term. Since discrepancy methods still require a large amount of measurement data, this paper investigates the extent to which a single discrepancy model can be trained for a physical model with additional parameter dependencies without the need for retraining. As an example, a damped electromagnetic oscillating circuit is used. The physical model is realised by a differential equation describing the electric current, considering only inductance and capacitance; dissipation due to resistance is neglected. This creates a discrepancy between measurement and model, which is corrected by a data‐driven model. In the experiments, the inductance and the capacity are varied. It is found that the same data‐driven model can only be used if additional parametric dependencies in the data‐driven term are considered as well."}],"publication":"Proceedings in Applied Mathematics and Mechanics"},{"status":"public","conference":{"name":"45th Annual Conference of the Cognitive Science Society","location":"Sydney"},"user_id":"91018","publisher":"Cognitive Science Society","_id":"46067","quality_controlled":"1","project":[{"name":"TRR 318 - A05: TRR 318 - Echtzeitmessung der Aufmerksamkeit im Mensch-Roboter-Erklärdialog (Teilprojekt A05)","grant_number":"438445824","_id":"115"}],"popular_science":"1","citation":{"ama":"Singh A, Rohlfing KJ. Contrastiveness in the context of action demonstration: an eye-tracking study on its effects on action perception and action recall. In: <i>Proceedings of the Annual Meeting of the Cognitive Science Society 45 (45)</i>. Cognitive Science Society; 2023.","bibtex":"@inproceedings{Singh_Rohlfing_2023, place={Sydney, Australia}, title={Contrastiveness in the context of action demonstration: an eye-tracking study on its effects on action perception and action recall}, booktitle={Proceedings of the Annual Meeting of the Cognitive Science Society 45 (45)}, publisher={Cognitive Science Society}, author={Singh, Amit and Rohlfing, Katharina J.}, year={2023} }","mla":"Singh, Amit, and Katharina J. Rohlfing. “Contrastiveness in the Context of Action Demonstration: An Eye-Tracking Study on Its Effects on Action Perception and Action Recall.” <i>Proceedings of the Annual Meeting of the Cognitive Science Society 45 (45)</i>, Cognitive Science Society, 2023.","chicago":"Singh, Amit, and Katharina J. Rohlfing. “Contrastiveness in the Context of Action Demonstration: An Eye-Tracking Study on Its Effects on Action Perception and Action Recall.” In <i>Proceedings of the Annual Meeting of the Cognitive Science Society 45 (45)</i>. Sydney, Australia: Cognitive Science Society, 2023.","short":"A. Singh, K.J. Rohlfing, in: Proceedings of the Annual Meeting of the Cognitive Science Society 45 (45), Cognitive Science Society, Sydney, Australia, 2023.","apa":"Singh, A., &#38; Rohlfing, K. J. (2023). Contrastiveness in the context of action demonstration: an eye-tracking study on its effects on action perception and action recall. <i>Proceedings of the Annual Meeting of the Cognitive Science Society 45 (45)</i>. 45th Annual Conference of the Cognitive Science Society, Sydney.","ieee":"A. Singh and K. J. Rohlfing, “Contrastiveness in the context of action demonstration: an eye-tracking study on its effects on action perception and action recall,” presented at the 45th Annual Conference of the Cognitive Science Society, Sydney, 2023."},"oa":"1","place":"Sydney, Australia","date_updated":"2023-09-27T13:51:42Z","publication_status":"published","year":"2023","title":"Contrastiveness in the context of action demonstration: an eye-tracking study on its effects on action perception and action recall","author":[{"id":"91018","last_name":"Singh","first_name":"Amit","orcid":"0000-0002-7789-1521","full_name":"Singh, Amit"},{"id":"50352","first_name":"Katharina J.","last_name":"Rohlfing","full_name":"Rohlfing, Katharina J."}],"main_file_link":[{"url":"https://escholarship.org/uc/item/2w94t4cv","open_access":"1"}],"language":[{"iso":"eng"}],"related_material":{"record":[{"relation":"contains","id":"46067","status":"public"}]},"abstract":[{"text":"<p>The study investigates two different ways of guiding the addressee of an explanation - an explainee, through action demonstration: contrastive and non-contrastive. Their effect was tested on attention to specific action elements (goal) as well as on event memory. In an eye-tracking experiment, participants were shown different motion videos that were either contrastive or non-contrastive with respect to the segments of movement presentation. Given that everyday action demonstration is often multimodal, the stimuli were created with re- spect to their visual and verbal presentation. For visual presentation, a video combined two movements in a contrastive (e.g., Up-motion following a Down-motion) or non-contrastive way (e.g., two Up-motions following each other). For verbal presentation, each video was combined with a sequence of instruction descriptions in the form of negative (i.e., contrastive) or assertive (i.e., non-contrastive) guidance. It was found that a) attention to the event goal increased for this condition in the later time window, and b) participants’ recall of the event was facilitated when a visually contrastive motion was combined with a verbal contrast.</p>","lang":"eng"}],"publication":"Proceedings of the Annual Meeting of the Cognitive Science Society 45 (45)","type":"conference","keyword":["Attention","negation","contrastive  guidance","eye-movements","action understanding","event representation"],"department":[{"_id":"749"},{"_id":"660"}],"date_created":"2023-07-15T12:16:42Z"},{"year":"2023","title":"Show me the verb: Visualisierung von Wortstellungsregeln im DaF-Unterricht für die Grundstufe","author":[{"id":"102760","last_name":"Lentfort","first_name":"Theresa","full_name":"Lentfort, Theresa"},{"full_name":"Mentchen, Silke","last_name":"Mentchen","first_name":"Silke"}],"publication_status":"published","date_updated":"2024-10-14T07:51:15Z","article_type":"original","main_file_link":[{"open_access":"1","url":"http://gfl-journal.de/wp-content/uploads/2024/07/20230206-Lentfort-Mentchen.pdf"}],"language":[{"iso":"ger"}],"publication":"GfL","issue":"2","abstract":[{"lang":"ger","text":"Die charakteristische Verbzweitstellung des Deutschen und die sogenannte Satzklammer führen bei der Sprachproduktion vieler Lernender zu klassischen Fehlern und Frustration. Die Herausforderung für den fremdsprachlichen A1-/A2-Unterricht besteht darin, das Phänomen der Verbstellung didaktisch so zu reduzieren, dass der Gegenstand zwar nicht unzulässig vereinfacht wird, die DaF-Lernenden aber ein leicht handhabbares Modell für die Sprachproduktion zur Verfügung haben, das sie auch ohne umfassende linguistische Vorkenntnisse nutzen können. Im vorliegenden Beitrag werden wir zeigen, wie eine Vermittlung dieses grammatischen Inhalts durch Metaphorisierung und Visualisierung gelingen kann. Dazu untersuchen wir gängige Metaphern, die in Lehrmaterial für A1-/A2-Niveau zur Einführung der Verbzweitstellung und der Klammerstruktur verwendet werden, und geben einen Überblick über die dort eingesetzten Visualisierungen, deren didaktischen Nutzen wir anhand eines von uns erstellten Kriterienkatalogs analysieren. Hierzu fassen wir syntaktische Modelle wie das Feldermodell, die Dependenz- und die Valenztheorie im\r\nKontext unseres Interesses zusammen. Ziel unserer Untersuchung ist es, brauchbare und ausbaufähige Modelle zu identifizieren."}],"date_created":"2023-11-07T16:28:21Z","keyword":["A1-/A2-Unterricht","Verbstellung","Satzklammer","Metapher","Visualisierung","Lerntheorie","Kognitive Linguistik","Lehrmaterial"],"type":"journal_article","status":"public","page":"72 - 97","_id":"48676","user_id":"102760","citation":{"ama":"Lentfort T, Mentchen S. Show me the verb: Visualisierung von Wortstellungsregeln im DaF-Unterricht für die Grundstufe. <i>GfL</i>. 2023;(2):72-97.","bibtex":"@article{Lentfort_Mentchen_2023, title={Show me the verb: Visualisierung von Wortstellungsregeln im DaF-Unterricht für die Grundstufe}, number={2}, journal={GfL}, author={Lentfort, Theresa and Mentchen, Silke}, year={2023}, pages={72–97} }","mla":"Lentfort, Theresa, and Silke Mentchen. “Show me the verb: Visualisierung von Wortstellungsregeln im DaF-Unterricht für die Grundstufe.” <i>GfL</i>, no. 2, 2023, pp. 72–97.","chicago":"Lentfort, Theresa, and Silke Mentchen. “Show me the verb: Visualisierung von Wortstellungsregeln im DaF-Unterricht für die Grundstufe.” <i>GfL</i>, no. 2 (2023): 72–97.","short":"T. Lentfort, S. Mentchen, GfL (2023) 72–97.","apa":"Lentfort, T., &#38; Mentchen, S. (2023). Show me the verb: Visualisierung von Wortstellungsregeln im DaF-Unterricht für die Grundstufe. <i>GfL</i>, <i>2</i>, 72–97.","ieee":"T. Lentfort and S. Mentchen, “Show me the verb: Visualisierung von Wortstellungsregeln im DaF-Unterricht für die Grundstufe,” <i>GfL</i>, no. 2, pp. 72–97, 2023."},"quality_controlled":"1","oa":"1"},{"main_file_link":[{"open_access":"1","url":"http://www.ciha.org/content/motion-migrations-proceedings-35th-world-congress-art-history"}],"page":"1120-1140","language":[{"iso":"eng"}],"_id":"49955","user_id":"61731","editor":[{"last_name":"Mattos Avolese ","first_name":"Claudia ","full_name":"Mattos Avolese , Claudia "}],"title":"Cities Made of Silver. The Impact of Migration Processes and Architectural Theory on the Urban Planning of Early Modern Mining Towns","status":"public","year":"2023","publication_identifier":{"isbn":["978-85-93921-02-5"]},"author":[{"first_name":"Marco","last_name":"Silvestri","full_name":"Silvestri, Marco","id":"47652"}],"date_updated":"2024-10-16T10:23:36Z","place":"São Paulo","date_created":"2023-12-20T14:54:32Z","type":"book_chapter","oa":"1","publication":"Motion: Migrations. Proceedings of the 35th World Congress of Art History","citation":{"short":"M. Silvestri, in: C. Mattos Avolese  (Ed.), Motion: Migrations. Proceedings of the 35th World Congress of Art History, São Paulo, 2023, pp. 1120–1140.","chicago":"Silvestri, Marco. “Cities Made of Silver. The Impact of Migration Processes and Architectural Theory on the Urban Planning of Early Modern Mining Towns.” In <i>Motion: Migrations. Proceedings of the 35th World Congress of Art History</i>, edited by Claudia  Mattos Avolese , 1120–40. São Paulo, 2023.","apa":"Silvestri, M. (2023). Cities Made of Silver. The Impact of Migration Processes and Architectural Theory on the Urban Planning of Early Modern Mining Towns. In C. Mattos Avolese  (Ed.), <i>Motion: Migrations. Proceedings of the 35th World Congress of Art History</i> (pp. 1120–1140).","ieee":"M. Silvestri, “Cities Made of Silver. The Impact of Migration Processes and Architectural Theory on the Urban Planning of Early Modern Mining Towns,” in <i>Motion: Migrations. Proceedings of the 35th World Congress of Art History</i>, C. Mattos Avolese , Ed. São Paulo, 2023, pp. 1120–1140.","ama":"Silvestri M. Cities Made of Silver. The Impact of Migration Processes and Architectural Theory on the Urban Planning of Early Modern Mining Towns. In: Mattos Avolese  C, ed. <i>Motion: Migrations. Proceedings of the 35th World Congress of Art History</i>. ; 2023:1120-1140.","bibtex":"@inbook{Silvestri_2023, place={São Paulo}, title={Cities Made of Silver. The Impact of Migration Processes and Architectural Theory on the Urban Planning of Early Modern Mining Towns}, booktitle={Motion: Migrations. Proceedings of the 35th World Congress of Art History}, author={Silvestri, Marco}, editor={Mattos Avolese , Claudia }, year={2023}, pages={1120–1140} }","mla":"Silvestri, Marco. “Cities Made of Silver. The Impact of Migration Processes and Architectural Theory on the Urban Planning of Early Modern Mining Towns.” <i>Motion: Migrations. Proceedings of the 35th World Congress of Art History</i>, edited by Claudia  Mattos Avolese , 2023, pp. 1120–40."}}]