[{"title":"Learning Bilinear Models of Actuated Koopman Generators from Partially-Observed Trajectories","external_id":{"arxiv":["2209.09977"]},"publication_status":"published","project":[{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"department":[{"_id":"655"}],"doi":"10.1137/22M1523601","oa":"1","date_updated":"2024-03-18T10:40:08Z","language":[{"iso":"eng"}],"user_id":"47427","abstract":[{"text":"Data-driven models for nonlinear dynamical systems based on approximating the underlying Koopman operator or generator have proven to be successful tools for forecasting, feature learning, state estimation, and control. It has become well known that the Koopman generators for control-affine systems also have affine dependence on the input, leading to convenient finite-dimensional bilinear approximations of the dynamics. Yet there are still two main obstacles that limit the scope of current approaches for approximating the Koopman generators of systems with actuation. First, the performance of existing methods depends heavily on the choice of basis functions over which the Koopman generator is to be approximated; and there is currently no universal way to choose them for systems that are not measure preserving. Secondly, if we do not observe the full state, we may not gain access to a sufficiently rich collection of such functions to describe the dynamics. This is because the commonly used method of forming time-delayed observables fails when there is actuation. To remedy these issues, we write the dynamics of observables governed by the Koopman generator as a bilinear hidden Markov model, and determine the model parameters using the expectation-maximization (EM) algorithm. The E-step involves a standard Kalman filter and smoother, while the M-step resembles control-affine dynamic mode decomposition for the generator. We demonstrate the performance of this method on three examples, including recovery of a finite-dimensional Koopman-invariant subspace for an actuated system with a slow manifold; estimation of Koopman eigenfunctions for the unforced Duffing equation; and model-predictive control of a fluidic pinball system based only on noisy observations of lift and drag.","lang":"eng"}],"volume":23,"status":"public","date_created":"2022-09-22T07:21:40Z","publisher":"SIAM","author":[{"last_name":"Otto","first_name":"Samuel E.","full_name":"Otto, Samuel E."},{"id":"47427","last_name":"Peitz","orcid":"0000-0002-3389-793X","full_name":"Peitz, Sebastian","first_name":"Sebastian"},{"full_name":"Rowley, Clarence W.","first_name":"Clarence W.","last_name":"Rowley"}],"publication":"SIAM Journal on Applied Dynamical Systems","issue":"1","_id":"33461","intvolume":" 23","year":"2024","citation":{"ieee":"S. E. Otto, S. Peitz, and C. W. Rowley, “Learning Bilinear Models of Actuated Koopman Generators from Partially-Observed Trajectories,” SIAM Journal on Applied Dynamical Systems, vol. 23, no. 1, pp. 885–923, 2024, doi: 10.1137/22M1523601.","short":"S.E. Otto, S. Peitz, C.W. Rowley, SIAM Journal on Applied Dynamical Systems 23 (2024) 885–923.","mla":"Otto, Samuel E., et al. “Learning Bilinear Models of Actuated Koopman Generators from Partially-Observed Trajectories.” SIAM Journal on Applied Dynamical Systems, vol. 23, no. 1, SIAM, 2024, pp. 885–923, doi:10.1137/22M1523601.","bibtex":"@article{Otto_Peitz_Rowley_2024, title={Learning Bilinear Models of Actuated Koopman Generators from Partially-Observed Trajectories}, volume={23}, DOI={10.1137/22M1523601}, number={1}, journal={SIAM Journal on Applied Dynamical Systems}, publisher={SIAM}, author={Otto, Samuel E. and Peitz, Sebastian and Rowley, Clarence W.}, year={2024}, pages={885–923} }","ama":"Otto SE, Peitz S, Rowley CW. Learning Bilinear Models of Actuated Koopman Generators from Partially-Observed Trajectories. SIAM Journal on Applied Dynamical Systems. 2024;23(1):885-923. doi:10.1137/22M1523601","apa":"Otto, S. E., Peitz, S., & Rowley, C. W. (2024). Learning Bilinear Models of Actuated Koopman Generators from Partially-Observed Trajectories. SIAM Journal on Applied Dynamical Systems, 23(1), 885–923. https://doi.org/10.1137/22M1523601","chicago":"Otto, Samuel E., Sebastian Peitz, and Clarence W. Rowley. “Learning Bilinear Models of Actuated Koopman Generators from Partially-Observed Trajectories.” SIAM Journal on Applied Dynamical Systems 23, no. 1 (2024): 885–923. https://doi.org/10.1137/22M1523601."},"type":"journal_article","page":"885-923","main_file_link":[{"url":"https://arxiv.org/pdf/2209.09977.pdf","open_access":"1"}]},{"language":[{"iso":"eng"}],"oa":"1","doi":"10.1063/5.0172287","date_updated":"2024-01-09T11:29:06Z","publication_status":"published","publication_identifier":{"issn":["1054-1500"]},"department":[{"_id":"636"}],"related_material":{"link":[{"relation":"software","description":"GitHub","url":"https://github.com/Christian-Offen/DLNN_pde"}]},"title":"Learning of discrete models of variational PDEs from data","external_id":{"arxiv":["2308.05082 "]},"year":"2024","type":"journal_article","citation":{"short":"C. Offen, S. Ober-Blöbaum, Chaos 34 (2024).","ieee":"C. Offen and S. Ober-Blöbaum, “Learning of discrete models of variational PDEs from data,” Chaos, vol. 34, no. 1, Art. no. 013104, 2024, doi: 10.1063/5.0172287.","chicago":"Offen, Christian, and Sina Ober-Blöbaum. “Learning of Discrete Models of Variational PDEs from Data.” Chaos 34, no. 1 (2024). https://doi.org/10.1063/5.0172287.","ama":"Offen C, Ober-Blöbaum S. Learning of discrete models of variational PDEs from data. Chaos. 2024;34(1). doi:10.1063/5.0172287","apa":"Offen, C., & Ober-Blöbaum, S. (2024). Learning of discrete models of variational PDEs from data. Chaos, 34(1), Article 013104. https://doi.org/10.1063/5.0172287","mla":"Offen, Christian, and Sina Ober-Blöbaum. “Learning of Discrete Models of Variational PDEs from Data.” Chaos, vol. 34, no. 1, 013104, AIP Publishing, 2024, doi:10.1063/5.0172287.","bibtex":"@article{Offen_Ober-Blöbaum_2024, title={Learning of discrete models of variational PDEs from data}, volume={34}, DOI={10.1063/5.0172287}, number={1013104}, journal={Chaos}, publisher={AIP Publishing}, author={Offen, Christian and Ober-Blöbaum, Sina}, year={2024} }"},"issue":"1","article_number":"013104","intvolume":" 34","_id":"46469","status":"public","has_accepted_license":"1","date_created":"2023-08-10T08:24:48Z","volume":34,"file":[{"file_name":"Accepted manuscript with AIP banner CHA23-AR-01370.pdf","date_created":"2024-01-09T10:48:38Z","access_level":"open_access","title":"Accepted Manuscript Chaos","creator":"coffen","file_id":"50376","file_size":13222105,"relation":"main_file","date_updated":"2024-01-09T10:48:38Z","content_type":"application/pdf"},{"date_created":"2024-01-09T11:19:49Z","file_name":"LDensityPDE_AIP.pdf","access_level":"open_access","file_id":"50390","creator":"coffen","title":"Learning of discrete models of variational PDEs from data","file_size":12960884,"description":"We show how to learn discrete field theories from observational data of fields on a space-time lattice. For this, we train\na neural network model of a discrete Lagrangian density such that the discrete Euler–Lagrange equations are consistent\nwith the given training data. We, thus, obtain a structure-preserving machine learning architecture. Lagrangian\ndensities are not uniquely defined by the solutions of a field theory. We introduce a technique to derive regularisers for\nthe training process which optimise numerical regularity of the discrete field theory. Minimisation of the regularisers\nguarantees that close to the training data the discrete field theory behaves robust and efficient when used in numerical\nsimulations. Further, we show how to identify structurally simple solutions of the underlying continuous field theory\nsuch as travelling waves. This is possible even when travelling waves are not present in the training data. This is\ncompared to data-driven model order reduction based approaches, which struggle to identify suitable latent spaces\ncontaining structurally simple solutions when these are not present in the training data. Ideas are demonstrated on\nexamples based on the wave equation and the Schrödinger equation.","relation":"main_file","content_type":"application/pdf","date_updated":"2024-01-09T11:19:49Z"}],"quality_controlled":"1","publisher":"AIP Publishing","author":[{"id":"85279","last_name":"Offen","full_name":"Offen, Christian","orcid":"0000-0002-5940-8057","first_name":"Christian"},{"id":"16494","last_name":"Ober-Blöbaum","full_name":"Ober-Blöbaum, Sina","first_name":"Sina"}],"file_date_updated":"2024-01-09T11:19:49Z","publication":"Chaos","user_id":"85279","ddc":["510"],"article_type":"original","abstract":[{"text":"We show how to learn discrete field theories from observational data of fields on a space-time lattice. For this, we train a neural network model of a discrete Lagrangian density such that the discrete Euler--Lagrange equations are consistent with the given training data. We, thus, obtain a structure-preserving machine learning architecture. Lagrangian densities are not uniquely defined by the solutions of a field theory. We introduce a technique to derive regularisers for the training process which optimise numerical regularity of the discrete field theory. Minimisation of the regularisers guarantees that close to the training data the discrete field theory behaves robust and efficient when used in numerical simulations. Further, we show how to identify structurally simple solutions of the underlying continuous field theory such as travelling waves. This is possible even when travelling waves are not present in the training data. This is compared to data-driven model order reduction based approaches, which struggle to identify suitable latent spaces containing structurally simple solutions when these are not present in the training data. Ideas are demonstrated on examples based on the wave equation and the Schrödinger equation. ","lang":"eng"}]},{"citation":{"ama":"Harnack M. Lebendiges Silberschmiedehandwerk in Westfalen am Beispiel der 1892 gegründeten Werkstatt Cassau in Paderborn. Graugold Magazin für Alltagskultur.","apa":"Harnack, M. (n.d.). Lebendiges Silberschmiedehandwerk in Westfalen am Beispiel der 1892 gegründeten Werkstatt Cassau in Paderborn. Graugold. Magazin Für Alltagskultur.","chicago":"Harnack, Maria. “Lebendiges Silberschmiedehandwerk in Westfalen Am Beispiel Der 1892 Gegründeten Werkstatt Cassau in Paderborn.” Graugold. Magazin Für Alltagskultur, n.d.","bibtex":"@article{Harnack, title={Lebendiges Silberschmiedehandwerk in Westfalen am Beispiel der 1892 gegründeten Werkstatt Cassau in Paderborn}, journal={Graugold. Magazin für Alltagskultur}, author={Harnack, Maria} }","mla":"Harnack, Maria. “Lebendiges Silberschmiedehandwerk in Westfalen Am Beispiel Der 1892 Gegründeten Werkstatt Cassau in Paderborn.” Graugold. Magazin Für Alltagskultur.","short":"M. Harnack, Graugold. Magazin Für Alltagskultur (n.d.).","ieee":"M. Harnack, “Lebendiges Silberschmiedehandwerk in Westfalen am Beispiel der 1892 gegründeten Werkstatt Cassau in Paderborn,” Graugold. Magazin für Alltagskultur."},"type":"journal_article","year":"2024","language":[{"iso":"eng"}],"_id":"46081","date_updated":"2023-07-19T07:17:00Z","author":[{"full_name":"Harnack, Maria","first_name":"Maria","id":"54828","last_name":"Harnack"}],"publication":"Graugold. Magazin für Alltagskultur","publication_status":"accepted","status":"public","date_created":"2023-07-18T19:59:16Z","title":"Lebendiges Silberschmiedehandwerk in Westfalen am Beispiel der 1892 gegründeten Werkstatt Cassau in Paderborn","user_id":"54828"},{"citation":{"short":"V. Carillo Beber, P. Fernandes, C. Nagel, C. Köster, A. Matzenmiller, M. Hecht, J. Baumgartner, T. Melz, K. Tews, S. Çavdar, G. Meschut, in: 24. Kolloquium: Gemeinsame Forschung in der Klebtechnik, 2024.","apa":"Carillo Beber, V., Fernandes, P., Nagel, C., Köster, C., Matzenmiller, A., Hecht, M., Baumgartner, J., Melz, T., Tews, K., Çavdar, S., & Meschut, G. (2024). Lebensdauerprognose für Stahlklebverbindungen bei multiaxialer Belastung mit Phasenverschiebung, veränderlicher Mittelspannung und variablen Amplituden. 24. Kolloquium: Gemeinsame Forschung in der Klebtechnik. 24. Kolloquium: Gemeinsame Forschung in der Klebtechnik, Köln.","ama":"Carillo Beber V, Fernandes P, Nagel C, et al. Lebensdauerprognose für Stahlklebverbindungen bei multiaxialer Belastung mit Phasenverschiebung, veränderlicher Mittelspannung und variablen Amplituden. In: 24. Kolloquium: Gemeinsame Forschung in der Klebtechnik. ; 2024.","chicago":"Carillo Beber, Vinicius, Pedro Fernandes, Christof Nagel, Christian Köster, Anton Matzenmiller, Mathias Hecht, Jörg Baumgartner, et al. “Lebensdauerprognose für Stahlklebverbindungen bei multiaxialer Belastung mit Phasenverschiebung, veränderlicher Mittelspannung und variablen Amplituden.” In 24. Kolloquium: Gemeinsame Forschung in der Klebtechnik, 2024.","ieee":"V. Carillo Beber et al., “Lebensdauerprognose für Stahlklebverbindungen bei multiaxialer Belastung mit Phasenverschiebung, veränderlicher Mittelspannung und variablen Amplituden,” presented at the 24. Kolloquium: Gemeinsame Forschung in der Klebtechnik, Köln, 2024.","bibtex":"@inproceedings{Carillo Beber_Fernandes_Nagel_Köster_Matzenmiller_Hecht_Baumgartner_Melz_Tews_Çavdar_et al._2024, title={Lebensdauerprognose für Stahlklebverbindungen bei multiaxialer Belastung mit Phasenverschiebung, veränderlicher Mittelspannung und variablen Amplituden}, booktitle={24. Kolloquium: Gemeinsame Forschung in der Klebtechnik}, author={Carillo Beber, Vinicius and Fernandes, Pedro and Nagel, Christof and Köster, Christian and Matzenmiller, Anton and Hecht, Mathias and Baumgartner, Jörg and Melz, Tobias and Tews, Karina and Çavdar, Serkan and et al.}, year={2024} }","mla":"Carillo Beber, Vinicius, et al. “Lebensdauerprognose für Stahlklebverbindungen bei multiaxialer Belastung mit Phasenverschiebung, veränderlicher Mittelspannung und variablen Amplituden.” 24. Kolloquium: Gemeinsame Forschung in der Klebtechnik, 2024."},"type":"conference","year":"2024","language":[{"iso":"ger"}],"conference":{"end_date":"2024-02-28","start_date":"2024-02-27","name":"24. Kolloquium: Gemeinsame Forschung in der Klebtechnik","location":"Köln"},"date_updated":"2024-02-29T12:33:37Z","_id":"52215","department":[{"_id":"157"}],"publication":"24. Kolloquium: Gemeinsame Forschung in der Klebtechnik","author":[{"first_name":"Vinicius","full_name":"Carillo Beber, Vinicius","last_name":"Carillo Beber"},{"last_name":"Fernandes","first_name":"Pedro","full_name":"Fernandes, Pedro"},{"last_name":"Nagel","first_name":"Christof","full_name":"Nagel, Christof"},{"first_name":"Christian","full_name":"Köster, Christian","last_name":"Köster"},{"full_name":"Matzenmiller, Anton","first_name":"Anton","last_name":"Matzenmiller"},{"first_name":"Mathias","full_name":"Hecht, Mathias","last_name":"Hecht"},{"last_name":"Baumgartner","full_name":"Baumgartner, Jörg","first_name":"Jörg"},{"full_name":"Melz, Tobias","first_name":"Tobias","last_name":"Melz"},{"last_name":"Tews","id":"40263","first_name":"Karina","full_name":"Tews, Karina"},{"id":"36456","last_name":"Çavdar","full_name":"Çavdar, Serkan","first_name":"Serkan"},{"full_name":"Meschut, Gerson","orcid":"0000-0002-2763-1246","first_name":"Gerson","id":"32056","last_name":"Meschut"}],"date_created":"2024-02-29T12:29:17Z","status":"public","title":"Lebensdauerprognose für Stahlklebverbindungen bei multiaxialer Belastung mit Phasenverschiebung, veränderlicher Mittelspannung und variablen Amplituden","user_id":"40263"},{"status":"public","date_created":"2024-02-05T08:11:03Z","editor":[{"id":"217","last_name":"Herzig","full_name":"Herzig, Bardo","first_name":"Bardo"},{"last_name":"Eickelmann","id":"40387","first_name":"Birgit","full_name":"Eickelmann, Birgit"},{"first_name":"Franziska","full_name":"Schwabl, Franziska","last_name":"Schwabl","id":"37157"},{"last_name":"Schulze","full_name":"Schulze, J.","first_name":"J."},{"last_name":"Niemann","id":"32467","first_name":"Jan","full_name":"Niemann, Jan"}],"publication_status":"inpress","publisher":"Waxmann Verlag GmbH","department":[{"_id":"462"}],"user_id":"40387","title":"Lehrkräftebildung in der digitalen Welt – zukunftsorientierte Forschungs- und Praxisperspektiven","place":"Münster","language":[{"iso":"ger"}],"citation":{"bibtex":"@book{Herzig_Eickelmann_Schwabl_Schulze_Niemann, place={Münster}, title={Lehrkräftebildung in der digitalen Welt – zukunftsorientierte Forschungs- und Praxisperspektiven}, publisher={Waxmann Verlag GmbH} }","mla":"Herzig, Bardo, et al., editors. Lehrkräftebildung in der digitalen Welt – zukunftsorientierte Forschungs- und Praxisperspektiven. Waxmann Verlag GmbH.","chicago":"Herzig, Bardo, Birgit Eickelmann, Franziska Schwabl, J. Schulze, and Jan Niemann, eds. Lehrkräftebildung in der digitalen Welt – zukunftsorientierte Forschungs- und Praxisperspektiven. Münster: Waxmann Verlag GmbH, n.d.","apa":"Herzig, B., Eickelmann, B., Schwabl, F., Schulze, J., & Niemann, J. (Eds.). (n.d.). Lehrkräftebildung in der digitalen Welt – zukunftsorientierte Forschungs- und Praxisperspektiven. Waxmann Verlag GmbH.","ama":"Herzig B, Eickelmann B, Schwabl F, Schulze J, Niemann J, eds. Lehrkräftebildung in der digitalen Welt – zukunftsorientierte Forschungs- und Praxisperspektiven. Waxmann Verlag GmbH","ieee":"B. Herzig, B. Eickelmann, F. Schwabl, J. Schulze, and J. Niemann, Eds., Lehrkräftebildung in der digitalen Welt – zukunftsorientierte Forschungs- und Praxisperspektiven. Münster: Waxmann Verlag GmbH.","short":"B. Herzig, B. Eickelmann, F. Schwabl, J. Schulze, J. Niemann, eds., Lehrkräftebildung in der digitalen Welt – zukunftsorientierte Forschungs- und Praxisperspektiven, Waxmann Verlag GmbH, Münster, n.d."},"type":"book_editor","year":"2024","_id":"51129","date_updated":"2024-02-05T08:12:13Z"},{"oa":"1","date_updated":"2024-02-09T22:38:15Z","_id":"17740","language":[{"iso":"eng"}],"year":"2024","type":"encyclopedia_article","citation":{"ieee":"V. Peckhaus, “Leibniz’s Influence on 19th Century Logic,” in The Stanford Encyclopedia of Philosophy, first published Sep 4, 2009, substantive revision Feb 2, 2024, E. N. . Zalta and U. Nodelman, Eds. 2024.","short":"V. Peckhaus, in: E.N.. Zalta, U. Nodelman (Eds.), The Stanford Encyclopedia of Philosophy, First Published Sep 4, 2009, Substantive Revision Feb 2, 2024, 2024.","mla":"Peckhaus, Volker. “Leibniz’s Influence on 19th Century Logic.” The Stanford Encyclopedia of Philosophy, First Published Sep 4, 2009, Substantive Revision Feb 2, 2024, edited by Edward N.. Zalta and Uri Nodelman, 2024.","bibtex":"@inbook{Peckhaus_2024, title={Leibniz’s Influence on 19th Century Logic}, booktitle={The Stanford Encyclopedia of Philosophy, first published Sep 4, 2009, substantive revision Feb 2, 2024}, author={Peckhaus, Volker}, editor={Zalta, Edward N.. and Nodelman, Uri}, year={2024} }","ama":"Peckhaus V. Leibniz’s Influence on 19th Century Logic. In: Zalta EN., Nodelman U, eds. The Stanford Encyclopedia of Philosophy, First Published Sep 4, 2009, Substantive Revision Feb 2, 2024. ; 2024.","apa":"Peckhaus, V. (2024). Leibniz’s Influence on 19th Century Logic. In E. N. . Zalta & U. Nodelman (Eds.), The Stanford Encyclopedia of Philosophy, first published Sep 4, 2009, substantive revision Feb 2, 2024.","chicago":"Peckhaus, Volker. “Leibniz’s Influence on 19th Century Logic.” In The Stanford Encyclopedia of Philosophy, First Published Sep 4, 2009, Substantive Revision Feb 2, 2024, edited by Edward N.. Zalta and Uri Nodelman, 2024."},"main_file_link":[{"url":"https://plato.stanford.edu/entries/leibniz-logic-influence/","open_access":"1"}],"user_id":"391","title":"Leibniz’s Influence on 19th Century Logic","status":"public","date_created":"2020-08-10T06:08:50Z","editor":[{"full_name":"Zalta, Edward N..","first_name":"Edward N..","last_name":"Zalta"},{"last_name":"Nodelman","first_name":"Uri","full_name":"Nodelman, Uri"}],"author":[{"last_name":"Peckhaus","id":"391","first_name":"Volker","full_name":"Peckhaus, Volker"}],"publication":"The Stanford Encyclopedia of Philosophy, first published Sep 4, 2009, substantive revision Feb 2, 2024","department":[{"_id":"520"}]},{"series_title":"Poesis. Schriften zu Literatur und den Künsten der Frühmoderne / Habilitationsschrift, Universität Paderborn","citation":{"apa":"Schlieper, H. (n.d.). Liebestragödie. Genealogien einer französischen Gattung des 17. Jahrhunderts. Brill / Fink .","ama":"Schlieper H. Liebestragödie. Genealogien Einer Französischen Gattung Des 17. Jahrhunderts. Brill / Fink","chicago":"Schlieper, Hendrik. Liebestragödie. Genealogien Einer Französischen Gattung Des 17. Jahrhunderts. Poesis. Schriften Zu Literatur Und Den Künsten Der Frühmoderne / Habilitationsschrift, Universität Paderborn. Paderborn: Brill / Fink , n.d.","mla":"Schlieper, Hendrik. Liebestragödie. Genealogien Einer Französischen Gattung Des 17. Jahrhunderts. Brill / Fink .","bibtex":"@book{Schlieper, place={Paderborn}, series={Poesis. Schriften zu Literatur und den Künsten der Frühmoderne / Habilitationsschrift, Universität Paderborn}, title={Liebestragödie. Genealogien einer französischen Gattung des 17. Jahrhunderts}, publisher={Brill / Fink }, author={Schlieper, Hendrik}, collection={Poesis. Schriften zu Literatur und den Künsten der Frühmoderne / Habilitationsschrift, Universität Paderborn} }","short":"H. Schlieper, Liebestragödie. Genealogien Einer Französischen Gattung Des 17. Jahrhunderts, Brill / Fink , Paderborn, n.d.","ieee":"H. Schlieper, Liebestragödie. Genealogien einer französischen Gattung des 17. Jahrhunderts. Paderborn: Brill / Fink ."},"type":"book","year":"2024","language":[{"iso":"eng"}],"date_updated":"2023-12-06T09:37:10Z","_id":"49504","department":[{"_id":"116"}],"author":[{"full_name":"Schlieper, Hendrik","first_name":"Hendrik","last_name":"Schlieper"}],"publisher":"Brill / Fink ","publication_status":"inpress","date_created":"2023-12-06T09:35:44Z","status":"public","place":"Paderborn","title":"Liebestragödie. Genealogien einer französischen Gattung des 17. Jahrhunderts","user_id":"29963"},{"publication_status":"published","publication_identifier":{"issn":["2837-6714"]},"department":[{"_id":"15"},{"_id":"623"}],"title":"Low-noise balanced homodyne detection with superconducting nanowire single-photon detectors","language":[{"iso":"eng"}],"doi":"10.1364/opticaq.502201","date_updated":"2024-01-25T11:54:14Z","status":"public","date_created":"2024-01-25T11:48:02Z","volume":2,"publisher":"Optica Publishing Group","author":[{"first_name":"Maximilian","full_name":"Protte, Maximilian","last_name":"Protte","id":"46170"},{"first_name":"Timon","orcid":"0000-0001-7652-1716","full_name":"Schapeler, Timon","last_name":"Schapeler","id":"55629"},{"first_name":"Jan","orcid":"0000-0002-5844-3205","full_name":"Sperling, Jan","last_name":"Sperling","id":"75127"},{"first_name":"Tim","full_name":"Bartley, Tim","last_name":"Bartley","id":"49683"}],"publication":"Optica Quantum","user_id":"55629","abstract":[{"lang":"eng","text":"Superconducting nanowire single-photon detectors (SNSPDs) have been widely used to study the discrete nature of quantum states of light in the form of photon-counting experiments. We show that SNSPDs can also be used to study continuous variables of optical quantum states by performing homodyne detection at a bandwidth of 400 kHz. By measuring the interference of a continuous-wave field of a local oscillator with the field of the vacuum state using two SNSPDs, we show that the variance of the difference in count rates is linearly proportional to the photon flux of the local oscillator over almost five orders of magnitude. The resulting shot-noise clearance of (46.0 ± 1.1) dB is the highest reported clearance for a balanced optical homodyne detector, demonstrating their potential for measuring highly squeezed states in the continuous-wave regime. In addition, we measured a CMRR = 22.4 dB. From the joint click counting statistics, we also measure the phase-dependent quadrature of a weak coherent state to demonstrate our device’s functionality as a homodyne detector."}],"type":"journal_article","citation":{"mla":"Protte, Maximilian, et al. “Low-Noise Balanced Homodyne Detection with Superconducting Nanowire Single-Photon Detectors.” Optica Quantum, vol. 2, no. 1, 1, Optica Publishing Group, 2024, doi:10.1364/opticaq.502201.","bibtex":"@article{Protte_Schapeler_Sperling_Bartley_2024, title={Low-noise balanced homodyne detection with superconducting nanowire single-photon detectors}, volume={2}, DOI={10.1364/opticaq.502201}, number={11}, journal={Optica Quantum}, publisher={Optica Publishing Group}, author={Protte, Maximilian and Schapeler, Timon and Sperling, Jan and Bartley, Tim}, year={2024} }","chicago":"Protte, Maximilian, Timon Schapeler, Jan Sperling, and Tim Bartley. “Low-Noise Balanced Homodyne Detection with Superconducting Nanowire Single-Photon Detectors.” Optica Quantum 2, no. 1 (2024). https://doi.org/10.1364/opticaq.502201.","ama":"Protte M, Schapeler T, Sperling J, Bartley T. Low-noise balanced homodyne detection with superconducting nanowire single-photon detectors. Optica Quantum. 2024;2(1). doi:10.1364/opticaq.502201","apa":"Protte, M., Schapeler, T., Sperling, J., & Bartley, T. (2024). Low-noise balanced homodyne detection with superconducting nanowire single-photon detectors. Optica Quantum, 2(1), Article 1. https://doi.org/10.1364/opticaq.502201","ieee":"M. Protte, T. Schapeler, J. Sperling, and T. Bartley, “Low-noise balanced homodyne detection with superconducting nanowire single-photon detectors,” Optica Quantum, vol. 2, no. 1, Art. no. 1, 2024, doi: 10.1364/opticaq.502201.","short":"M. Protte, T. Schapeler, J. Sperling, T. Bartley, Optica Quantum 2 (2024)."},"year":"2024","issue":"1","article_number":"1","_id":"50840","intvolume":" 2"},{"language":[{"iso":"eng"}],"date_updated":"2024-02-05T12:25:00Z","doi":"https://doi.org/10.1016/j.jaecs.2023.100235","department":[{"_id":"150"}],"publication_status":"published","editor":[{"full_name":"Tischendorf, Ricardo","first_name":"Ricardo","id":"67002","last_name":"Tischendorf"},{"first_name":"Orlando","full_name":"Massopo, Orlando","last_name":"Massopo","id":"98419"},{"orcid":"000-0001-8590-1921","full_name":"Schmid, Hans-Joachim","first_name":"Hans-Joachim","id":"464","last_name":"Schmid"},{"last_name":"Pyrmak","first_name":"Olek","full_name":"Pyrmak, Olek"},{"first_name":"Sophie","full_name":"Dupont, Sophie","last_name":"Dupont"},{"first_name":"Fabian","full_name":"Fröde, Fabian","last_name":"Fröde"},{"last_name":"Pitsch","first_name":"Heinz","full_name":"Pitsch, Heinz"},{"last_name":"Kneer","first_name":"Reinhold","full_name":"Kneer, Reinhold"}],"title":"Maghemite nanoparticles synthesis via spray flame synthesis and particle characterization by hole in a tube sampling and scanning mobility particle sizing (HIAT-SMPS)","main_file_link":[{"url":"https://www.sciencedirect.com/science/article/pii/S2666352X23001243?ref=cra_js_challenge&fr=RR-1"}],"type":"journal_editor","citation":{"short":"R. Tischendorf, O. Massopo, H.-J. Schmid, O. Pyrmak, S. Dupont, F. Fröde, H. Pitsch, R. Kneer, eds., Maghemite Nanoparticles Synthesis via Spray Flame Synthesis and Particle Characterization by Hole in a Tube Sampling and Scanning Mobility Particle Sizing (HIAT-SMPS), Elsevier, 2024.","ieee":"R. Tischendorf et al., Eds., Maghemite nanoparticles synthesis via spray flame synthesis and particle characterization by hole in a tube sampling and scanning mobility particle sizing (HIAT-SMPS). Elsevier, 2024.","apa":"Maghemite nanoparticles synthesis via spray flame synthesis and particle characterization by hole in a tube sampling and scanning mobility particle sizing (HIAT-SMPS). (2024). In R. Tischendorf, O. Massopo, H.-J. Schmid, O. Pyrmak, S. Dupont, F. Fröde, H. Pitsch, & R. Kneer (Eds.), Applications in Energy and Combustion Science. Elsevier. https://doi.org/10.1016/j.jaecs.2023.100235","ama":"Tischendorf R, Massopo O, Schmid H-J, et al., eds. Maghemite Nanoparticles Synthesis via Spray Flame Synthesis and Particle Characterization by Hole in a Tube Sampling and Scanning Mobility Particle Sizing (HIAT-SMPS). Elsevier; 2024. doi:https://doi.org/10.1016/j.jaecs.2023.100235","chicago":"Tischendorf, Ricardo, Orlando Massopo, Hans-Joachim Schmid, Olek Pyrmak, Sophie Dupont, Fabian Fröde, Heinz Pitsch, and Reinhold Kneer, eds. Maghemite Nanoparticles Synthesis via Spray Flame Synthesis and Particle Characterization by Hole in a Tube Sampling and Scanning Mobility Particle Sizing (HIAT-SMPS). Applications in Energy and Combustion Science. Elsevier, 2024. https://doi.org/10.1016/j.jaecs.2023.100235.","mla":"Tischendorf, Ricardo, et al., editors. “Maghemite Nanoparticles Synthesis via Spray Flame Synthesis and Particle Characterization by Hole in a Tube Sampling and Scanning Mobility Particle Sizing (HIAT-SMPS).” Applications in Energy and Combustion Science, Elsevier, 2024, doi:https://doi.org/10.1016/j.jaecs.2023.100235.","bibtex":"@book{Tischendorf_Massopo_Schmid_Pyrmak_Dupont_Fröde_Pitsch_Kneer_2024, title={Maghemite nanoparticles synthesis via spray flame synthesis and particle characterization by hole in a tube sampling and scanning mobility particle sizing (HIAT-SMPS)}, DOI={https://doi.org/10.1016/j.jaecs.2023.100235}, journal={Applications in Energy and Combustion Science}, publisher={Elsevier}, year={2024} }"},"year":"2024","_id":"51133","publication":"Applications in Energy and Combustion Science","keyword":["Flame Spray Pyrolysis","SpraySyn2","Spray flame synthesis","Maghemite nanoparticles","Gas to particle-conversion","Hole in a tube sampling"],"publisher":"Elsevier","date_created":"2024-02-05T12:02:57Z","status":"public","has_accepted_license":"1","abstract":[{"text":"In order to standardize spray flame synthesis (SFS) studies, intensive work has been done in recent years on the design of burner types. Thus, in 2019, the so-called SpraySyn1 burner was introduced (SS1), which was subsequently characterized in numerical and experimental studies. Based on this research, a modification of the nozzle design was proposed, which has now been considered in the successor model, SpraySyn2 (SS2). As little is known about the effect of the nozzle adaptation on the particle formation, we operated both burners under identical operating conditions to produce maghemite. The final powder comparison showed that SS2 yielded considerable higher specific surface areas (associated with smaller primary particle sizes), lower polydispersity, and higher phase purity. To obtain further information on the size distributions of aggregates and agglomerates generated by SS2, aerosol samples were extracted by hole in a tube (HIAT) sampling and characterized by scanning mobility particle sizing (SMPS). Samples were extracted along the centerline at different heights above the burner (HAB) above the visible flame tip (>7 cm), and quenching experiments were performed to extract the aerosol samples at different dilution rates. Thereby, it was demonstrated that performing detailed quenching experiments is crucial for obtaining representative HIAT-SMPS data. In particular, agglomerates/aggregate sizes were overestimated by up to ~70 % if samples were not sufficiently diluted. If sufficient dilution was applied, distribution widths and mean particle mobility diameters were determined with high accuracy (sample standard derivation <5 %). Our data suggested the evolution of primary particle sizes was mostly completed <7 cm HAB and it was shown aggregates/agglomerates present above the visible flame were compact in structure (non- fractal). The mean diameter of the particle ensemble grew along the centerline from 6.9 nm (7 cm) to 11.4 nm (15 cm), while distribution widths grew from 1.42 to 1.52.","lang":"eng"}],"user_id":"98419","ddc":["660"]},{"title":"Making “the Two” Into One Body: De- and Recategorization of (Un-)Circumcision,","user_id":"70423","place":"Tübingen","editor":[{"last_name":"Annette","first_name":"Weissenrieder","full_name":"Annette, Weissenrieder"}],"status":"public","date_created":"2023-12-18T16:40:32Z","author":[{"last_name":"Taschl-Erber","first_name":"Andrea","full_name":"Taschl-Erber, Andrea"}],"publication":"Reconsidering the Letter to the Ephesians in Context ","_id":"49815","date_updated":"2023-12-18T16:44:31Z","citation":{"ieee":"A. Taschl-Erber, “Making ‘the Two’ Into One Body: De- and Recategorization of (Un-)Circumcision,” in Reconsidering the Letter to the Ephesians in Context , W. Annette, Ed. Tübingen, 2024.","short":"A. Taschl-Erber, in: W. Annette (Ed.), Reconsidering the Letter to the Ephesians in Context , Tübingen, 2024.","mla":"Taschl-Erber, Andrea. “Making ‘the Two’ Into One Body: De- and Recategorization of (Un-)Circumcision,.” Reconsidering the Letter to the Ephesians in Context , edited by Weissenrieder Annette, 2024.","bibtex":"@inbook{Taschl-Erber_2024, place={Tübingen}, series={Wissenschaftliche Untersuchungen zum Neuen Testament}, title={Making “the Two” Into One Body: De- and Recategorization of (Un-)Circumcision,}, booktitle={Reconsidering the Letter to the Ephesians in Context }, author={Taschl-Erber, Andrea}, editor={Annette, Weissenrieder}, year={2024}, collection={Wissenschaftliche Untersuchungen zum Neuen Testament} }","chicago":"Taschl-Erber, Andrea. “Making ‘the Two’ Into One Body: De- and Recategorization of (Un-)Circumcision,.” In Reconsidering the Letter to the Ephesians in Context , edited by Weissenrieder Annette. Wissenschaftliche Untersuchungen Zum Neuen Testament. Tübingen, 2024.","ama":"Taschl-Erber A. Making “the Two” Into One Body: De- and Recategorization of (Un-)Circumcision,. In: Annette W, ed. Reconsidering the Letter to the Ephesians in Context . Wissenschaftliche Untersuchungen zum Neuen Testament. ; 2024.","apa":"Taschl-Erber, A. (2024). Making “the Two” Into One Body: De- and Recategorization of (Un-)Circumcision,. In W. Annette (Ed.), Reconsidering the Letter to the Ephesians in Context ."},"year":"2024","type":"book_chapter","language":[{"iso":"eng"}],"series_title":"Wissenschaftliche Untersuchungen zum Neuen Testament"},{"year":"2024","citation":{"short":"J. Wingenbach, S. Schumacher, X. Ma, Physical Review Research, in Press (2024).","ieee":"J. Wingenbach, S. Schumacher, and X. Ma, “Manipulating spectral topology and exceptional points by nonlinearity in non-Hermitian polariton systems,” Physical Review Research, in press, 2024.","apa":"Wingenbach, J., Schumacher, S., & Ma, X. (2024). Manipulating spectral topology and exceptional points by nonlinearity in non-Hermitian polariton systems. Physical Review Research, in Press.","ama":"Wingenbach J, Schumacher S, Ma X. Manipulating spectral topology and exceptional points by nonlinearity in non-Hermitian polariton systems. Physical Review Research, in press. Published online 2024.","chicago":"Wingenbach, Jan, Stefan Schumacher, and Xuekai Ma. “Manipulating Spectral Topology and Exceptional Points by Nonlinearity in Non-Hermitian Polariton Systems.” Physical Review Research, in Press, 2024.","bibtex":"@article{Wingenbach_Schumacher_Ma_2024, title={Manipulating spectral topology and exceptional points by nonlinearity in non-Hermitian polariton systems}, journal={Physical Review Research, in press}, author={Wingenbach, Jan and Schumacher, Stefan and Ma, Xuekai}, year={2024} }","mla":"Wingenbach, Jan, et al. “Manipulating Spectral Topology and Exceptional Points by Nonlinearity in Non-Hermitian Polariton Systems.” Physical Review Research, in Press, 2024."},"type":"journal_article","language":[{"iso":"eng"}],"_id":"51105","date_updated":"2024-01-31T13:52:56Z","date_created":"2024-01-31T13:49:29Z","status":"public","publication":"Physical Review Research, in press","department":[{"_id":"15"}],"author":[{"id":"69187","last_name":"Wingenbach","full_name":"Wingenbach, Jan","first_name":"Jan"},{"id":"27271","last_name":"Schumacher","orcid":"0000-0003-4042-4951","full_name":"Schumacher, Stefan","first_name":"Stefan"},{"full_name":"Ma, Xuekai","first_name":"Xuekai","id":"59416","last_name":"Ma"}],"title":"Manipulating spectral topology and exceptional points by nonlinearity in non-Hermitian polariton systems","user_id":"59416"},{"language":[{"iso":"eng"}],"type":"book_chapter","year":"2024","citation":{"ama":"Taschl-Erber A. Martha and Her Sister(s) – Female Voices in the Fourth Gospel,. In: Franchi R, Barnes A, eds. More than Female Disciples: An Examination of Women’s Authority in Ancient Christianity (Ist-VIth Centuries). ; 2024.","apa":"Taschl-Erber, A. (2024). Martha and Her Sister(s) – Female Voices in the Fourth Gospel,. In R. Franchi & A. Barnes (Eds.), More than Female Disciples: An Examination of Women’s Authority in Ancient Christianity (Ist-VIth centuries).","chicago":"Taschl-Erber, Andrea. “Martha and Her Sister(s) – Female Voices in the Fourth Gospel,.” In More than Female Disciples: An Examination of Women’s Authority in Ancient Christianity (Ist-VIth Centuries), edited by Roberta Franchi and Aneilya Barnes. Brepols, 2024.","mla":"Taschl-Erber, Andrea. “Martha and Her Sister(s) – Female Voices in the Fourth Gospel,.” More than Female Disciples: An Examination of Women’s Authority in Ancient Christianity (Ist-VIth Centuries), edited by Roberta Franchi and Aneilya Barnes, 2024.","bibtex":"@inbook{Taschl-Erber_2024, place={Brepols}, title={Martha and Her Sister(s) – Female Voices in the Fourth Gospel,}, booktitle={More than Female Disciples: An Examination of Women’s Authority in Ancient Christianity (Ist-VIth centuries)}, author={Taschl-Erber, Andrea}, editor={Franchi, Roberta and Barnes, Aneilya }, year={2024} }","short":"A. Taschl-Erber, in: R. Franchi, A. Barnes (Eds.), More than Female Disciples: An Examination of Women’s Authority in Ancient Christianity (Ist-VIth Centuries), Brepols, 2024.","ieee":"A. Taschl-Erber, “Martha and Her Sister(s) – Female Voices in the Fourth Gospel,” in More than Female Disciples: An Examination of Women’s Authority in Ancient Christianity (Ist-VIth centuries), R. Franchi and A. Barnes, Eds. Brepols, 2024."},"date_updated":"2023-12-18T16:44:24Z","_id":"49816","date_created":"2023-12-18T16:44:00Z","status":"public","editor":[{"last_name":"Franchi","full_name":"Franchi, Roberta","first_name":"Roberta"},{"last_name":"Barnes","first_name":"Aneilya ","full_name":"Barnes, Aneilya "}],"publication":"More than Female Disciples: An Examination of Women’s Authority in Ancient Christianity (Ist-VIth centuries)","author":[{"first_name":"Andrea","full_name":"Taschl-Erber, Andrea","last_name":"Taschl-Erber"}],"user_id":"70423","title":"Martha and Her Sister(s) – Female Voices in the Fourth Gospel,","place":"Brepols"},{"title":"Materialschonende Verarbeitung von Thermoplasten auf Wave-Schnecken","place":"Düren","publication_identifier":{"isbn":["978-3-8440-9334-6"]},"publication_status":"published","department":[{"_id":"148"},{"_id":"321"},{"_id":"9"}],"date_updated":"2024-01-16T09:49:07Z","language":[{"iso":"ger"}],"series_title":"Schriftenreihe Kunststofftechnik Paderborn","user_id":"44224","abstract":[{"lang":"ger","text":"Die Extrusion stellt das mengenmäßig dominante Verarbeitungsverfahren für thermoplastische Kunststoffe dar. Daher gibt es starke Bestrebungen in diesem Bereich hin zu einer höheren Wirtschaftlichkeit, welche beispielsweise durch höheren Massedurchsatz bei gleichbleibender Maschinengröße erreicht werden kann, oder aber auch im Hinblick auf eine Kreislaufwirtschaft die Bestrebung hin zu einer materialschonenden Verarbeitung. Beide Bestrebungen erfordern spezielle Schneckenkonzepte. Hierunter fallenWave- Schnecken, welche in beiden Bereichen ein vorteilhaftes Prozessverhalten aufzeigen sollen. Die Auslegung von Wave-Schnecken erfordert jedoch ein stärkeres Verständnis über das geometrieabhängige Prozessverhalten in der Extrusion. \r\nIm Rahmen der Dissertation werden zwei Themengebiete angegangen. Das erste Thema ist die Herleitung einer Methode zur Charakterisierung des Abbauverhaltens von Thermoplasten sowie die Nutzung der Charakterisierung als Vorhersagemodell. Das zweite Thema behandelt die Auslegung von Wave-Schnecken basierend auf numerischen Simulationen samt Validierung anhand von sieben Energy-Transfer-Schnecken im Vergleich zu drei konventionellen Schnecken. Hierbei werden unter anderem der Materialabbau, die thermische und die stoffliche Homogenität betrachtet, um ein umfassendes Bild über das Prozessverhalten der Schnecken zu schaffen. Die vorgestellten Untersuchungen dienen schlussendlich zu einer Bestätigung des vorteilhaften Prozessverhaltens von Wave-Schnecken."},{"text":"The extrusion process is the dominant processing method for thermoplastics in terms of quantity. For this reason, there are strong efforts in this area towards greater economic efficiency, which can be achieved, for example, through higher mass throughput with the same machine size, or, with regard to a circular economy, towards material-preserving processing. Both endeavours require special screw concepts. These include wave screws, which should demonstrate advantageous process behaviour in both areas. However, the design of wave screws requires a better understanding of the geometry-dependent process behaviour in extrusion. \r\nTwo topics are addressed in the dissertation. The first topic is the derivation of a method to characterise the degradation behaviour of thermoplastics and the use of the characterisation as a predictive model. The second topic deals with the design of wave screws based on numerical simulations including validation using seven energy transfer screws in comparison to three conventional screws. Among other things, the material degradation, the thermal and the material homogeneity are considered in order to create a comprehensive picture of the process behaviour of the screws. The presented investigations ultimately serve to confirm the advantageous process behaviour of wave screws.","lang":"eng"}],"status":"public","date_created":"2024-01-16T09:48:27Z","volume":"Band 2/2024","author":[{"first_name":"Christoph Wilhelm Theodor","full_name":"Schall, Christoph Wilhelm Theodor","last_name":"Schall","id":"44224"}],"publisher":"Shaker Verlag","_id":"50530","supervisor":[{"id":"20530","last_name":"Schöppner","full_name":"Schöppner, Volker","first_name":"Volker"}],"year":"2024","citation":{"ieee":"C. W. T. Schall, Materialschonende Verarbeitung von Thermoplasten auf Wave-Schnecken, vol. Band 2/2024. Düren: Shaker Verlag, 2024.","short":"C.W.T. Schall, Materialschonende Verarbeitung von Thermoplasten auf Wave-Schnecken, Shaker Verlag, Düren, 2024.","mla":"Schall, Christoph Wilhelm Theodor. Materialschonende Verarbeitung von Thermoplasten auf Wave-Schnecken. Shaker Verlag, 2024.","bibtex":"@book{Schall_2024, place={Düren}, series={Schriftenreihe Kunststofftechnik Paderborn}, title={Materialschonende Verarbeitung von Thermoplasten auf Wave-Schnecken}, volume={Band 2/2024}, publisher={Shaker Verlag}, author={Schall, Christoph Wilhelm Theodor}, year={2024}, collection={Schriftenreihe Kunststofftechnik Paderborn} }","chicago":"Schall, Christoph Wilhelm Theodor. Materialschonende Verarbeitung von Thermoplasten auf Wave-Schnecken. Vol. Band 2/2024. Schriftenreihe Kunststofftechnik Paderborn. Düren: Shaker Verlag, 2024.","ama":"Schall CWT. Materialschonende Verarbeitung von Thermoplasten auf Wave-Schnecken. Vol Band 2/2024. Shaker Verlag; 2024.","apa":"Schall, C. W. T. (2024). Materialschonende Verarbeitung von Thermoplasten auf Wave-Schnecken: Vol. Band 2/2024. Shaker Verlag."},"type":"dissertation","page":"224"},{"title":"Mechanisches Verhalten: Charakterisierung von Klebstoffen","user_id":"40263","date_created":"2024-02-29T12:33:31Z","status":"public","department":[{"_id":"157"}],"author":[{"id":"40263","last_name":"Tews","full_name":"Tews, Karina","first_name":"Karina"},{"id":"537","last_name":"Teutenberg","full_name":"Teutenberg, Dominik","first_name":"Dominik"},{"id":"32056","last_name":"Meschut","full_name":"Meschut, Gerson","orcid":"0000-0002-2763-1246","first_name":"Gerson"}],"conference":{"location":"Köln","name":"DECHEMA Workshop für Klebstoffanwender Simulation von Klebverbindungen","start_date":"22024-02-26"},"date_updated":"2024-02-29T12:33:36Z","_id":"52216","type":"conference","year":"2024","citation":{"chicago":"Tews, Karina, Dominik Teutenberg, and Gerson Meschut. “Mechanisches Verhalten: Charakterisierung von Klebstoffen,” 2024.","ama":"Tews K, Teutenberg D, Meschut G. Mechanisches Verhalten: Charakterisierung von Klebstoffen. In: ; 2024.","apa":"Tews, K., Teutenberg, D., & Meschut, G. (2024). Mechanisches Verhalten: Charakterisierung von Klebstoffen. DECHEMA Workshop für Klebstoffanwender Simulation von Klebverbindungen, Köln.","mla":"Tews, Karina, et al. Mechanisches Verhalten: Charakterisierung von Klebstoffen. 2024.","bibtex":"@inproceedings{Tews_Teutenberg_Meschut_2024, title={Mechanisches Verhalten: Charakterisierung von Klebstoffen}, author={Tews, Karina and Teutenberg, Dominik and Meschut, Gerson}, year={2024} }","short":"K. Tews, D. Teutenberg, G. Meschut, in: 2024.","ieee":"K. Tews, D. Teutenberg, and G. Meschut, “Mechanisches Verhalten: Charakterisierung von Klebstoffen,” presented at the DECHEMA Workshop für Klebstoffanwender Simulation von Klebverbindungen, Köln, 2024."},"language":[{"iso":"ger"}]},{"title":"Media, Economy and Society: A Critical Introduction.","user_id":"21863","place":"Abingdon","publication_status":"published","status":"public","date_created":"2023-11-21T11:07:58Z","author":[{"first_name":"Fuchs","full_name":"Christian, Fuchs","last_name":"Christian"}],"publisher":"Routledge","department":[{"_id":"136"},{"_id":"11"}],"doi":"10.4324/9781003391203","date_updated":"2023-11-21T11:08:03Z","_id":"49088","citation":{"chicago":"Christian, Fuchs. Media, Economy and Society: A Critical Introduction. Abingdon: Routledge, 2024. https://doi.org/10.4324/9781003391203.","ama":"Christian F. Media, Economy and Society: A Critical Introduction. Routledge; 2024. doi:10.4324/9781003391203","apa":"Christian, F. (2024). Media, Economy and Society: A Critical Introduction. Routledge. https://doi.org/10.4324/9781003391203","mla":"Christian, Fuchs. Media, Economy and Society: A Critical Introduction. Routledge, 2024, doi:10.4324/9781003391203.","bibtex":"@book{Christian_2024, place={Abingdon}, title={Media, Economy and Society: A Critical Introduction.}, DOI={10.4324/9781003391203}, publisher={Routledge}, author={Christian, Fuchs}, year={2024} }","short":"F. Christian, Media, Economy and Society: A Critical Introduction., Routledge, Abingdon, 2024.","ieee":"F. Christian, Media, Economy and Society: A Critical Introduction. Abingdon: Routledge, 2024."},"type":"book","year":"2024","language":[{"iso":"eng"}],"main_file_link":[{"url":"https://doi.org/10.4324/9781003391203"}]},{"title":"Mediennutzung von Jugendlichen zu sozialen und politischen Fragen, schulische Aktivitäten und Lehrkräftefortbildungen","user_id":"48921","place":"Münster","editor":[{"first_name":"H.J.","full_name":"Abs, H.J.","last_name":"Abs"},{"full_name":"Hahn-Laudenberg, K.","first_name":"K.","last_name":"Hahn-Laudenberg"},{"first_name":"D.","full_name":"Deimel, D.","last_name":"Deimel"},{"last_name":"Ziemes","full_name":"Ziemes, J.F.","first_name":"J.F."}],"publication_status":"published","status":"public","date_created":"2024-01-31T12:44:54Z","publisher":"Waxmann Verlag GmbH","author":[{"last_name":"Welsandt","full_name":"Welsandt, N.J.","first_name":"N.J."},{"full_name":"Huschle, L.","first_name":"L.","last_name":"Huschle"},{"full_name":"Drossel, Kerstin","first_name":"Kerstin","id":"48921","last_name":"Drossel"},{"last_name":"Deimel","first_name":"D.","full_name":"Deimel, D."},{"first_name":"H.J.","full_name":"Abs, H.J.","last_name":"Abs"}],"publication":"ICCS 2022. Schulische Sozialisation und politische Bildung von 14-Jährigen im internationalen Vergleich","department":[{"_id":"462"}],"_id":"51099","date_updated":"2024-02-27T08:33:04Z","type":"book_chapter","citation":{"mla":"Welsandt, N. J., et al. “Mediennutzung von Jugendlichen zu sozialen und politischen Fragen, schulische Aktivitäten und Lehrkräftefortbildungen.” ICCS 2022. Schulische Sozialisation und politische Bildung von 14-Jährigen im internationalen Vergleich, edited by H.J. Abs et al., Waxmann Verlag GmbH, 2024, pp. 239–76.","bibtex":"@inbook{Welsandt_Huschle_Drossel_Deimel_Abs_2024, place={Münster}, title={Mediennutzung von Jugendlichen zu sozialen und politischen Fragen, schulische Aktivitäten und Lehrkräftefortbildungen}, booktitle={ICCS 2022. Schulische Sozialisation und politische Bildung von 14-Jährigen im internationalen Vergleich}, publisher={Waxmann Verlag GmbH}, author={Welsandt, N.J. and Huschle, L. and Drossel, Kerstin and Deimel, D. and Abs, H.J.}, editor={Abs, H.J. and Hahn-Laudenberg, K. and Deimel, D. and Ziemes, J.F.}, year={2024}, pages={239–276} }","ama":"Welsandt NJ, Huschle L, Drossel K, Deimel D, Abs HJ. Mediennutzung von Jugendlichen zu sozialen und politischen Fragen, schulische Aktivitäten und Lehrkräftefortbildungen. In: Abs HJ, Hahn-Laudenberg K, Deimel D, Ziemes JF, eds. ICCS 2022. Schulische Sozialisation und politische Bildung von 14-Jährigen im internationalen Vergleich. Waxmann Verlag GmbH; 2024:239-276.","apa":"Welsandt, N. J., Huschle, L., Drossel, K., Deimel, D., & Abs, H. J. (2024). Mediennutzung von Jugendlichen zu sozialen und politischen Fragen, schulische Aktivitäten und Lehrkräftefortbildungen. In H. J. Abs, K. Hahn-Laudenberg, D. Deimel, & J. F. Ziemes (Eds.), ICCS 2022. 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