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B. Arian, W. Homberg, M. Riepold, A. Trächtler, J. Rozo Vasquez, and F. Walther, “Forming of metastable austenitic stainless steel tubes with axially graded martensite content by flow-forming,” presented at the 24th International Conference on Material Forming - ESAFORM 2021, Liège, Belgium, 2021.
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P. Neumann, S. Grüter, L. Eckel, B. Lütje-Klose, E. Wild, and J. Gorges, “Aufgaben und Zuständigkeiten von allgemeinen und sonderpädagogischen Lehrkräften sowie Fachkräften der ­Schulsozialarbeit­ in­ inklusiven­ Schulen­ der­ Sekundarstufe I. Erste Ergebnisse aus dem BiFoKi-Projekt,” Zeitschrift für Heilpädagogik, vol. 73, no. 4, pp. 164–177, 2021.
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I. Gräßler, D. Wiechel, D. Roesmann, and H. Thiele, “V-model based development of cyber-physical systems and cyber-physical production systems,”10.1016/j.procir.2021.05.119__in Procedia CIRP, 2021, pp. 253–258, doi:10.1016/j.procir.2021.05.119 .
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Q. A. Ahmed, T. Wiersema, and M. Platzner, “Malicious Routing: Circumventing Bitstream-level Verification for FPGAs,”10.23919/DATE51398.2021.9474026__presented at the Design, Automation and Test in Europe Conference (DATE’21), Alpexpo | Grenoble, France, 2021, doi:10.23919/DATE51398.2021.9474026 .
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B. Kivská et al., “Intermetallic Phases Identification and Diffusion Simulation in Twin-Roll Cast Al-Fe Clad Sheet,”10.3390/ma14247771__Materials, vol. 14, no. 24, Art. no. 7771, 2021, doi:10.3390/ma14247771 .
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K. Engelkemeier, A. Sun, D. Voswinkel, O. Grydin, M. Schaper, and W. Bremser, “Zinc Anodizing: Structural Diversity of Anodic Zinc Oxide Controlled by the Type of Electrolyte,”10.1002/celc.202100216__ChemElectroChem, pp. 2155–2168, 2021, doi:10.1002/celc.202100216 .
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L. Masendorf, M. Wächter, A. Esderts, M. Otroshi, and G. Meschut, “Service life estimation of selfpiercing riveted joints by linear damage accumulation,”10.1111/ffe.13446__Fatigue &; Fracture of Engineering Materials &; Structures, p. 15, 2021, doi:10.1111/ffe.13446 .
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S. Jensen, H. Gasteiger, and J. Bruns, “Place value and regrouping as seperate constructs of place value understanding,” in Proceedings of the 44th Conference of the International Group for the Psychology of Mathematics Education, Khon Kaen, Thailand, 2021, vol. 3, pp. 101–109.
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S. Jensen, H. Gasteiger, and J. Bruns, “Stellenwertverständnis: Verständnis von Stellenwertprinzip und Bündelungsprinzip als separate Konstrukte,”http://dx.doi.org/10.17877/DE290R-22292__in Beiträge zum Mathematikunterricht 2021, Lüneburg, 2021, doi:http://dx.doi.org/10.17877/DE290R-22292 .
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A. Mattei and O. Eremin, “Corona und Krise. Perspektiven erziehungswissenschaftlicher Frauen- und Geschlechterforschung,” in Bericht zur Jahrestagung der Sektion Frauen- und Geschlechterforschung in der Erziehungswissenschaft in der Deutschen Gesellschaft für Erziehungswissenschaft, Europa-Universität Flensburg  , 2021, pp. 87–89.
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S. J. Schemmer, D. Heisler, and J. Rink, “Entwicklungschance oder Warteschleife? Berufsorientierung und Berufswahl in der Berufsfachschule,” in Entwicklungen und Perspektiven in der Berufsorientierung. Stand und Herausforderungen. Online: (06.12.2021), U. Weyland, B. Ziegler, K. Driesel-Lange, and A. Kruse, Eds. Bonn: Verlag Barbara Budrich, 2021, pp. 60–78.
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I. Neiske, J. Osthushenrich, N. Schaper, U. Trier, and N. Vöing, Eds., Hochschule auf Abstand. Bielefeld, Germany: transcript Verlag, 2021.
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O. K. Aimiyekagbon, A. Bender, and W. Sextro, “On the applicability of time series features as health indicators for technical systems operating under varying conditions,” presented at the Seventeenth International Conference on Condition Monitoring and Asset Management (CM 2021).
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O. K. Aimiyekagbon, L. Muth, M. C. Wohlleben, A. Bender, and W. Sextro, “Rule-based Diagnostics of a Production Line,”10.36001/phme.2021.v6i1.3042__in Proceedings of the European Conference of the PHM Society 2021, 2021, vol. 6, no. 1, pp. 527–536, doi:10.36001/phme.2021.v6i1.3042 .
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C. Lammer, Andrea Karimé: Sterne im Kopf und ein unglaublicher Plan. Köln: Peter Hammer Verlag 2021. Oldenburg: www.kibum.de (Thomas Boyken und Jörn Brüggemann), 2021.
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M. Hajlaoui et al., “Extremely low-energy ARPES of quantum well states in cubic-GaN/AlN and GaAs/AlGaAs heterostructures,”10.1038/s41598-021-98569-6__Scientific Reports, vol. 11, Art. no. 19081, 2021, doi:10.1038/s41598-021-98569-6 .
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C. Boeddeker, F. Rautenberg, and R. Haeb-Umbach, “A Comparison and Combination of Unsupervised Blind Source Separation  Techniques,” presented at the ITG Conference on Speech Communication, Kiel, 2021.
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arXiv: 2106.05627

C. Boeddeker et al., “Convolutive Transfer Function Invariant SDR Training Criteria for Multi-Channel Reverberant Speech Separation,”10.1109/icassp39728.2021.9414661__2021, doi:10.1109/icassp39728.2021.9414661 .
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J. Schmalenstroeer, J. Heitkaemper, J. Ullmann, and R. Haeb-Umbach, “Open Range Pitch Tracking for Carrier Frequency Difference Estimation from HF Transmitted Speech,” in 29th European Signal Processing Conference (EUSIPCO), 2021, pp. 1–5.
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O. Hartung, “Rezension von: Jörg van Norden, Thomas Must, Lars Deile, Peter Riedel, Susan Krause und Wanda Schürenberg (Hgg.): Geschichtsdidaktische Grundbegriffe. Ein Bilderbuch für Studium, Lehre und Beruf. Hannover 2020,” H-Soz-Kult. Clio-online - Historisches Fachinformationssystem e.V., Berlin, 2021.
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T. Gburrek, J. Schmalenstroeer, and R. Haeb-Umbach, “Geometry calibration in wireless acoustic sensor networks utilizing DoA and distance information,”10.1186/s13636-021-00210-x__EURASIP Journal on Audio, Speech, and Music Processing, 2021, doi:10.1186/s13636-021-00210-x .
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T. Gburrek, J. Schmalenstroeer, and R. Haeb-Umbach, “Iterative Geometry Calibration from Distance Estimates for Wireless Acoustic Sensor Networks,”10.1109/icassp39728.2021.9413831__2021, doi:10.1109/icassp39728.2021.9413831 .
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T. Gburrek, J. Schmalenstroeer, and R. Haeb-Umbach, “On Source-Microphone Distance Estimation Using Convolutional Recurrent Neural Networks,” in Speech Communication; 14th ITG-Symposium, 2021, pp. 1–5.
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A. Chinaev, G. Enzner, T. Gburrek, and J. Schmalenstroeer, “Online Estimation of Sampling Rate Offsets in Wireless Acoustic Sensor Networks with Packet Loss,” in 29th European Signal Processing Conference (EUSIPCO), 2021, pp. 1–5.
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T. Moritz, “A. Seidler, I. Monok (Hgg.): Reformation und Bücher. Zentren der Ideen – Zentren der Buchproduktion. Wiesbaden 2020,” sehepunkte, vol. 21, no. 10. 2021.
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J. Ebbers, M. Kuhlmann, T. Cord-Landwehr, and R. Haeb-Umbach, “Contrastive Predictive Coding Supported Factorized Variational Autoencoder for Unsupervised Learning of Disentangled Speech Representations,” in Proceedings of the IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2021, pp. 3860–3864.
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C. Offen and S. Ober-Blöbaum, “Bifurcation preserving discretisations of optimal control problems,”https://doi.org/10.1016/j.ifacol.2021.11.099__vol. 54(19). pp. 334–339, 2021, doi:https://doi.org/10.1016/j.ifacol.2021.11.099 .
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arXiv: 2107.13853

E. Beyreuther et al., “Photoconduction of Polar and Nonpolar Cuts of Undoped Sr0.61B.39Nb2O6 Single Crystals,”10.3390/cryst11070780__Crystals, vol. 11, no. 7, Art. no. 780, 2021, doi:10.3390/cryst11070780 .
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S. Bonanati, N. Gruchel, R. Kurock, and H. M. Buhl, “Teilhabe von Eltern an schulischem Lernen mit Family-Literacy-Programmen. Langzeiteffekte von eLIFE 3 Lesen in Familie erleben“auf die elterliche Unterstützung beim Lesenlernen,”10.31244/dds.2021.03.04__Die Deutsche Schule, vol. 113, no. 3, pp. 2823301, 2021, doi:10.31244/dds.2021.03.04 .
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T. von Neumann, K. Kinoshita, C. Boeddeker, M. Delcroix, and R. Haeb-Umbach, “Graph-PIT: Generalized Permutation Invariant Training for Continuous Separation of Arbitrary Numbers of Speakers,”10.21437/interspeech.2021-1177__presented at the Interspeech, 2021, doi:10.21437/interspeech.2021-1177 .
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T. von Neumann, C. Boeddeker, K. Kinoshita, M. Delcroix, and R. Haeb-Umbach, “Speeding Up Permutation Invariant Training for Source Separation,” presented at the Speech Communication; 14th ITG Conference, Kiel, 2021.
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J. Ebbers and R. Haeb-Umbach, “Self-Trained Audio Tagging and Sound Event Detection in Domestic Environments,” in Proceedings of the 6th Detection and Classification of Acoustic Scenes and Events 2021 Workshop (DCA), 2021, pp. 226–230.
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J. Ebbers, M. C. Keyser, and R. Haeb-Umbach, “Adapting Sound Recognition to A New Environment Via Self-Training,” in Proceedings of the 29th European Signal Processing Conference (EUSIPCO), 2021, pp. 1135–1139.
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J. N. Schneider, “Digital transformation in industry,” in Fostering Digitisation and Industry 4.0: Education – Vocation - Industry – Future. New Opportunities and Challenges for European VET. Insights in the DigI-VET Project, M. Beutner, R. Pechuel, and J. Schneider, Eds. Köln , 2021, pp. 57–62.
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J. Schneider, “Teaching and Learning Materials,” in Fostering Digitisation and Industry 4.0: Education – Vocation - Industry – Future. New Opportunities and Challenges for European VET. Insights in the DigI-VET Project, M. Beutner, R. Pechuel, and J. Schneider, Eds. Köln , 2021, pp. 150–165.
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K. J. Rohlfing et al., “Explanation as a Social Practice: Toward a Conceptual Framework for the Social Design of AI Systems,”10.1109/tcds.2020.3044366__IEEE Transactions on Cognitive and Developmental Systems, vol. 13, no. 3, pp. 717–728, 2021, doi:10.1109/tcds.2020.3044366 .
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M. Riepold, B. Arian, J. R. Vasquez, W. Homberg, F. Walther, and A. Trächtler, “Model approaches for closed-loop property control for flow forming,”10.1016/j.aime.2021.100057__Advances in Industrial and Manufacturing Engineering, Art. no. 100057, 2021, doi:10.1016/j.aime.2021.100057 .
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I. Neiske, “Geflippte E-Tutor*innenschulungen,” in Inverted Classroom and beyond 2021 10 Jahre #icmbeyond. Norderstedt, J. Buchner, C. F. Freisleben-Teutscher, I. Neiske, and I. Morisse, Eds. 2021, pp. 140–148.
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I. Scharlau, A. Karsten, and K. Rohlfing, “Building, emptying out, or dreaming? Action structures and space in undergraduates’ metaphors of academic writing,”10.17239/jowr-2021.12.03.01__Journal of Writing Research, vol. 12, no. 3, pp. 493–529, 2021, doi:10.17239/jowr-2021.12.03.01 .
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R. Krollmann, R. Schmidt, and A. Spill, “Grenzüberschreitung und Distanzierung – Geschlechterforschung in universitären Toiletten,”10.17185/GENDER/20210126__blog interdisziplinäre geschlechterforschung, 2021, doi:10.17185/GENDER/20210126 .
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S. Hohmann, S. Gschwind, A. Müller, J. Nordine, and T.-E. Riesen, “Das Stellarium Gornergrat,” in PhyDid B, 2021, no. 2021, pp. 35–42.
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S. Ekström et al., “Stellarium Gornergrat – A swiss robotic Observatory for Education and Citizen Science,” SPG-Mitteilungen, no. 63, pp. 36–41, 2021.
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