@article{34215, abstract = {{Clinching as a mechanical joining technique allows a fast and reliable joining of metal sheets in large-scale production. An efficient design and dimensioning of clinched joints requires a holistic understanding of the material, the joining process and the resulting properties of the joint. In this paper, the process chain for clinching metal sheets is described and experimental techniques are proposed to analyze the process-microstructure-property relationships from the sheet metal to the joined structure. At the example of clinching aluminum EN AW 6014, characterization methods are applied and discussed for the following characteristics: the mechanical properties of the sheet materials, the tribological behavior in the joining system, the joining process and the resulting material structure, the load-bearing behavior of the joint, the damage and degradation as well as the service life and crack growth behavior. The compilation of the characterization methods gives an overview on the advantages and weaknesses of the methods and the multiple interactions of material, process and properties during clinching. In addition, the results of the analyses on EN AW 6014 can be applied for parameterization and validation of simulations.}}, author = {{Kupfer, Robert and Köhler, Daniel and Römisch, David and Wituschek, Simon and Ewenz, Lars and Kalich, Jan and Weiß, Deborah and Sadeghian, Behdad and Busch, Matthias and Krüger, Jan Tobias and Neuser, Moritz and Grydin, Olexandr and Böhnke, Max and Bielak, Christian Roman and Troschitz, Juliane}}, issn = {{2666-3309}}, journal = {{Journal of Advanced Joining Processes}}, keywords = {{Mechanical Engineering, Mechanics of Materials, Engineering (miscellaneous), Chemical Engineering (miscellaneous)}}, publisher = {{Elsevier BV}}, title = {{{Clinching of Aluminum Materials – Methods for the Continuous Characterization of Process, Microstructure and Properties}}}, doi = {{10.1016/j.jajp.2022.100108}}, volume = {{5}}, year = {{2022}}, } @inproceedings{52687, author = {{Bähr, Philipp and Striewe, Marius and Meschut, Gerson and Sommer, Silke}}, booktitle = {{12. Kolloquium: Gemeinsame Forschung in der Mechanischen Fügetechnik}}, title = {{{Ersatzmodellentwicklung zur Berücksichtigung der lokalen Fügeelementkinematik in mechanisch gefügten Verbindungen für die Bauteilauslegung im stahlintensiven Karosseriebau}}}, year = {{2022}}, } @inbook{33864, abstract = {{Im Zentrum Beitrags steht die Frage nach dem Spezifischen einer Didaktik im Wissenschafts- bzw. Hochschulkontext. Dabei hat die Organisation des Wissenschaftssystems in Disziplinen bzw. disziplinäre Gemeinschaften eine besondere Bedeutung. Disziplinen entwickeln spezifische Praktiken, die das Handeln ihrer Angehörigen prägen und sich in Fachkulturen zeigen. Diese Praktiken werden insbesondere an kommunikativen Artefakten sichtbar. Für Personen außerhalb einer disziplinären Gemeinschaft und ganz besonders für jene, die keinen direkten Bezug zum Wissenschaftssystem haben, sind disziplinäre Praktiken häufig schwer zu erschließen. Unsere Konzeption von Wissenschaftsdidaktik lenkt den Blick auf die impliziten Praktiken wissenschaftlicher Disziplinen. Aufgabe von Wissenschaftsdidaktik ist es dem- nach, erstens die impliziten disziplinären Sinnstrukturen, die hinter bestimmten Prak- tiken stehen und in kommunikativen Handlungen und Artefakten verschlüsselt sind, zu entschlüsseln. Zweitens ist es notwendig, die Wahrnehmung disziplinärer Praktiken durch die Studierenden zu analysieren und Differenzen zum Sinnverstehen von Wissenschaftler:innen zu identifizieren. Ausgehend davon kann dann drittens auf eine Verständigung über die Praktiken und deren Sinngehalt hingearbeitet werden. Der Beitrag formuliert die Grundzüge einer Wissenschaftsdidaktik, welche Verständigung über die Praktiken wissenschaftlicher Disziplinen zu einem Kernbestandteil akademischer Lehre macht. Dazu gehört auch ein Moment von Wissenschaftskritik, das auf die Disziplinen und deren Praktiken selbst zurückwirkt. Wissenschaftsdidaktik in diesem Sinne verlangt, den Blick Dritter auf die Praktiken der eigenen Disziplin einzunehmen. Dazu gehör auch, sich einzugestehen, wenn Praktiken keinen Sinn für wissenschaftliche Erkenntnisprozesse (mehr) aufweisen bzw. diesen verloren haben.}}, author = {{Jenert, Tobias and Scharlau, Ingrid}}, booktitle = {{Wissenschaftsdidaktik I: Einführung}}, editor = {{Reinmann, Gabi and Rhein, Rüdiger}}, keywords = {{Wissenschaftsdidaktik, Fachsozialisation, Wissenschaftskritik, Verständigung, Fachkultur, akademische Praktiken, Unterrichtsfach Psychologie}}, pages = {{155 -- 179}}, publisher = {{transcript}}, title = {{{Wissenschaftsdidaktik als Verständigung über wissenschaftliches Handeln – eine Auslegeordnung}}}, doi = {{10.14361/9783839460979-008}}, year = {{2022}}, } @article{46034, abstract = {{Die digitale Transformation führt dazu, dass sich lang etablierte Tätigkeiten und Arbeitsabläufe, welche die Berufsbilder im Kern definieren, verändern und stellt damit Mitarbeitende sowie Beteiligte der beruflichen Bildung vor Herausforderungen. Berufliche Lehramtsstudiengänge sind gefordert, Studierenden bereits im hochschulischen Teil ihrer Ausbildung den Aufbau eines berufsförmigen Wissens zu eröffnen, das ihnen die Erkundung beruflicher Handlungsfelder ermöglicht und eine wichtige Grundlage für die Unterrichtsgestaltung an Berufskollegs bildet. Wir geben in diesem Beitrag Einblicke in die Entwicklungsarbeiten einer fachdidaktisch geprägten Einführungsveranstaltung im Studienfach Wirtschaftswissenschaft für das Lehramt an Berufskollegs. Diese zieht Ansätze der Fallstudiendidaktik heran, um für Studierende eine Möglichkeit zu schaffen, die digitale Transformation von Arbeits- und Geschäftsprozessen zu erkunden und diese mit Blick auf die Gestaltung von Wirtschaftsunterricht an Berufskollegs zu analysieren. Dabei stellen wir die Entstehung der Fallstudie sowie deren Einbettung in das Modulkonzept dar und diskutieren das hochschuldidaktische Lehr-/Lernformat. }}, author = {{Jenert, Tobias and Kremer, H.-Hugo and Sänger, Niklas}}, journal = {{bwp@ Berufs- und Wirtschaftspädagogik}}, title = {{{Digitale Transformation der Berufs- und Arbeitswelt – Einblicke in die fachdidaktische Gestaltung der beruflichen Fachrichtung ‚Wirtschaft und Verwaltung‘}}}, volume = {{43}}, year = {{2022}}, } @article{31678, author = {{Jenert, Tobias and Scharlau, Ingrid}}, journal = {{Zeitschrift für Hochschulentwicklung}}, number = {{2}}, title = {{{Wissenschaftskommunikation als Verständigung: Chance für die Hochschulentwicklung?!}}}, volume = {{17}}, year = {{2022}}, } @article{52708, author = {{Büker, Ronja and Jenert, Tobias and Fust, Alexander Paul and Fahrbach, Manuel and Bellwald, Noah and Winkler, Christoph}}, journal = {{Erziehung & Unterricht}}, number = {{5-6}}, pages = {{383--393}}, title = {{{Mit dem SREL-Training unternehmerische Selbstkompetenzen entwickeln}}}, year = {{2022}}, } @misc{34630, author = {{Scharlau, Ingrid and Jenert, Tobias}}, booktitle = {{duz}}, pages = {{2}}, title = {{{Chance zur Reflexion}}}, volume = {{12}}, year = {{2022}}, } @inproceedings{46035, author = {{Sänger, Niklas}}, location = {{Essen}}, title = {{{Entwicklung didaktischer Fallstudien zur Förderung einer ‚digitalen Inhaltskompetenz‘ im Studienfach Wirtschaftswissenschaft für das Lehramt an Berufskollegs}}}, year = {{2022}}, } @book{39446, editor = {{Becher, Andrea and Blumberg, Eva and Goll, Thomas and Michalik, Kerstin and Tenberge, Claudia}}, isbn = {{9783781524965}}, publisher = {{Klinkhardt}}, title = {{{Sachunterricht in der Informationsgesellschaft}}}, doi = {{10.35468/5935}}, year = {{2022}}, } @misc{51350, author = {{Hansen, Christin}}, booktitle = {{Zeitschrift für Weltgeschichte}}, issn = {{1615-2581}}, keywords = {{General Medicine}}, number = {{2}}, pages = {{475--478}}, publisher = {{Peter Lang, International Academic Publishers}}, title = {{{Rezension zu: Marianne Bechhaus-Gerst, Stefanie Michels, Fabian Fechner (Hg.): Nordrhein-Westfalen und der Imperialismus, Berlin 2022}}}, doi = {{10.3726/zwg02202220}}, volume = {{23}}, year = {{2022}}, } @inproceedings{52850, abstract = {{We report on our work with students in our data science courses, focusing on the analysis of students’ results. This study represents an in-depth analysis of students’ creation and documentation of machine learning models. The students were supported by educationally designed Jupyter Notebooks, which are used as worked examples. Using the worked example, students document their results in a so-called computational essay. We examine which aspects of creating computational essays are difficult for students to find out how worked examples should be designed to support students without being too prescriptive. We analyze the computational essays produced by students and draw consequences for redesigning our worked example.}}, author = {{Fleischer, Yannik and Hüsing, Sven and Biehler, Rolf and Podworny, Susanne and Schulte, Carsten}}, booktitle = {{Bridging the Gap: Empowering and Educating Today’s Learners in Statistics. Proceedings of the Eleventh International Conference on Teaching Statistics}}, publisher = {{International Association for Statistical Education}}, title = {{{Jupyter Notebooks for Teaching, Learning, and Doing Data Science}}}, doi = {{10.52041/iase.icots11.t10e3}}, year = {{2022}}, } @article{52862, author = {{Turhan, Anni-Yasmin}}, issn = {{0933-1875}}, journal = {{KI - Künstliche Intelligenz}}, keywords = {{Artificial Intelligence}}, number = {{1}}, pages = {{1--4}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{A Double Take at Conferences: The Hybrid Format}}}, doi = {{10.1007/s13218-022-00758-6}}, volume = {{36}}, year = {{2022}}, } @inproceedings{52914, author = {{Dellori, Anna and Wessel, Lena}}, booktitle = {{Proceedings of INDRUM2022 (International Network for Didactic Research in University Mathematics }}, editor = {{Trigueros, M and Barquero, B and Hochmuth, R and Peters, J}}, pages = {{572--573}}, title = {{{Design principles for intertwining local and nonlocal mathematics - The case of relating registers and representations in Abstract Algebra}}}, year = {{2022}}, } @inproceedings{52923, author = {{de Camargo e Souza Câmara, Igor and Turhan, Anni-Yasmin}}, booktitle = {{Proceedings of the 20th International Workshop on Non-Monotonic Reasoning, NMR 2022, Part of the Federated Logic Conference (FLoC 2022), Haifa, Israel, August 7-9, 2022}}, editor = {{Arieli, Ofer and Casini, Giovanni and Giordano, Laura}}, pages = {{159–162}}, publisher = {{CEUR-WS.org}}, title = {{{Rational Defeasible Subsumption in DLs with Nested Quantifiers: the Case of ELI\(\perp\)}}}, volume = {{3197}}, year = {{2022}}, } @proceedings{52925, editor = {{Governatori, Guido and Turhan, Anni-Yasmin}}, isbn = {{978-3-031-21540-7}}, publisher = {{Springer}}, title = {{{Rules and Reasoning - 6th International Joint Conference on Rules and Reasoning, RuleML+RR 2022, Berlin, Germany, September 26-28, 2022, Proceedings}}}, doi = {{10.1007/978-3-031-21541-4}}, volume = {{13752}}, year = {{2022}}, } @inproceedings{52919, author = {{Dellori, Anna and Wessel, Lena}}, booktitle = {{ Proceedings of the 24th Annual Conference on Research in Undergraduate Mathematics Education}}, editor = {{Karunakaran, S S and Higgins, A}}, pages = {{1177}}, title = {{{Pre-service Teachers' Professional Development: Relating Abstract Algebra and School Algebra}}}, year = {{2022}}, } @article{53080, abstract = {{Quantitative speciation data for alternative fuels is highly desired to assess their emission potential and to develop and validate chemical kinetic models. In terms of substitute choices for fossil diesel are oxymethylene ethers (OMEs) strongly discussed. Due to the absence of carbon-carbon bonds, soot emis-sions from combustion of OMEs are low, but significant emissions of unregulated pollutants such as alde-hydes emerge. The combustion behavior of OME fuels with different chain lengths, OME0-4, was investigated in lam-inar premixed low-pressure flames using complementary molecular-beam mass spectrometry (MBMS) techniques. MBMS sampling provides an in-situ access directly into the reaction zone of the flame. Al-most all chemical species involved in the oxidation process can be detected and quantified simultane-ously. Neat OME0-3 flames were analyzed by electron ionization (EI) MBMS with high mass resolution ( R approximate to 3900) providing exact elementary composition. To obtain isomer-specific information, an OME1- doped hydrogen flame and a stochiometric OME4 flame were studied by double-imaging photoelectron photoion coincidence (i2PEPICO) spectroscopy. Both, EI-MBMS detection and i2PEPICO spectroscopy, en-ables a complete overview of all intermediates. The results show a dominance of oxygenated intermediates for all measured conditions. Mole fraction profiles for the most important species are presented (i.e. formaldehyde, methanol, methyl formate and formic acid) and compared to modeling results. Hydrocarbons with more than four carbon atoms were not detected under the investigated conditions. Isomers such as ethanol/dimethyl ether (m/z = 46) and ethenol/acetaldehyde (m/z = 44) could be separated using threshold photoelectron spectra for clear iden-tification and photoionization efficiency curves for quantification. This investigation permits the discus-sion and analysis of systematic trends, including intermediate species, for the combustion of the studied series of oxymethylene ether fuels. (c) 2022 The Combustion Institute. Published by Elsevier Inc. All rights reserved.}}, author = {{Gaiser, Nina and Zhang, Hao and Bierkandt, Thomas and Schmitt, Steffen and Zinsmeister, Julia and Kathrotia, Trupti and Hemberger, Patrick and Shaqiri, Shkelqim and Kasper, Tina and Aigner, Manfred and Oßwald, Patrick and Köhler, Markus}}, issn = {{0010-2180}}, journal = {{Combustion and Flame}}, keywords = {{General Physics and Astronomy, Energy Engineering and Power Technology, Fuel Technology, General Chemical Engineering, General Chemistry}}, publisher = {{Elsevier BV}}, title = {{{Investigation of the combustion chemistry in laminar, low-pressure oxymethylene ether flames (OME0–4)}}}, doi = {{10.1016/j.combustflame.2022.112060}}, volume = {{243}}, year = {{2022}}, } @article{53081, abstract = {{Recent progress in molecular combustion chemistry allows for detailed investigation of the intermediate species pool even for complex chemical fuel compositions, as occur for technical fuels. This study pro-vides detailed investigation of a comprehensive set of complex alternative gasoline fuels obtained from laminar flow reactors equipped with molecular-beam sampling techniques for observation of the com-bustion intermediate species pool in homogeneous gas phase reactions. The combination of ionization techniques including double-imaging photoelectron photoion coincidence (i2PEPICO) spectroscopy enables deeper mechanistic insights into the underlying reaction network relevant to technical fuels. The se-lected fuels focus on contemporary automotive engine application as drop-in fuels compliant to European EN 228 specification for gasoline. Therefore, potential alternative gasoline blends containing oxygenated hydrocarbons as octane improvers obtainable from bio-technological production routes, e.g., ethanol, iso- butanol, methyl tert -butyl ether (MTBE), and ethyl tert -butyl ether (ETBE), as well as a Fischer-Tropsch surrogate were investigated. The fuel set is completed by two synthetic naphtha fractions obtained from Fischer-Tropsch and methanol-to-gasoline processes alongside with a fossil reference gasoline. In total, speciation data for 11 technical fuels from two atmospheric flow reactor setups are presented. Detailed main and intermediate species profiles are provided for slightly rich ( 4) = 1.2) and lean ( 4) = 0.8) con-ditions for intermediate to high temperatures. Complementary, the isomer distribution on different mass channels, like m/z = 78 u fulvene/benzene, of four gasolines was investigated. Experimental findings are analyzed in terms of the detailed fuel composition and literature findings for molecular combustion chemistry. Influences of oxygenated fuel components as well as composition of the hydrocarbon frac-tions are examined with a particular focus on the soot precursor chemistry. This dataset is available for validation of chemical kinetic mechanisms for realistic gasolines containing oxygenated hydrocarbons.(c) 2021 The Combustion Institute. Published by Elsevier Inc. All rights reserved.}}, author = {{Zinsmeister, Julia and Gaiser, Nina and Melder, Jens and Bierkandt, Thomas and Hemberger, Patrick and Kasper, Tina and Aigner, Manfred and Köhler, Markus and Oßwald, Patrick}}, issn = {{0010-2180}}, journal = {{Combustion and Flame}}, keywords = {{General Physics and Astronomy, Energy Engineering and Power Technology, Fuel Technology, General Chemical Engineering, General Chemistry}}, publisher = {{Elsevier BV}}, title = {{{On the diversity of fossil and alternative gasoline combustion chemistry: A comparative flow reactor study}}}, doi = {{10.1016/j.combustflame.2021.111961}}, volume = {{243}}, year = {{2022}}, } @article{35111, abstract = {{Forschendes Lernen in der Lehrer:innenbildung ist seit der Ausweitung schulpraktischer Anteile bzw. der Einführung des sogenannten Praxissemesters eng verwoben mit der Lehrer:innenausbildung. Gleichzeitig wird bisher weitestgehend different beantwortet, was Forschendes Lernen ist und sein kann sowie warum es wie hochschuldidaktisch gerahmt wird und werden sollte. Der Beitrag widmet sich dieser Frage. Dabei zeigt sich einerseits, dass hochschuldidaktische Zugänge zur Realisierung Forschenden Lernens in der Lehrer:innenbildung erst vor dem Hintergrund theoretischer Annahmen zur Entwicklung von Lehrpersonen und deren Professionalität sowie zur Gestalt - gemeint ist hier der Beitrag zu dieser Entwicklung sowie der Anteil an Professionalität - Forschenden Lernens entwickelt werden können, eine solche Fundierung aber oftmals ausbleibt. Andererseits wird herausgearbeitet, inwiefern eine Differenz zwischen wissenschaftlicher Forschung und Forschung im Forschenden Lernen besteht. Daran anschließend wird eine habitustheoretische Fundierung Forschenden Lernens vorgestellt und es werden exemplarisch deren Implikationen für die Gestaltung Forschenden Lernens benannt. Abschließend wird anhand empirischer Rekonstruktionen beispielhaft eine praktische Umsetzung diskutiert.}}, author = {{Bloh, Thiemo and Caruso, Carina}}, issn = {{2199-8825}}, journal = {{die hochschullehre}}, keywords = {{Forschendes Lernen, Lehrer:innenausbildung, Praxissemester, Professionalisierung / Research-based learning, teacher education, internships, professionalization}}, number = {{21}}, pages = {{299–312}}, publisher = {{wbv }}, title = {{{Ein kritisch-multiperspektivischer Blick auf Forschendes Lernen in der Lehrkräftebildung}}}, doi = {{10.3278/HSL2221W}}, volume = {{8}}, year = {{2022}}, } @article{53084, abstract = {{AbstractThe thermal decomposition of Zr(acac)4 is studied in a SiC-microreactor on the micro-second time scale. By utilizing synchrotron radiation and photoelectron photoion coincidence spectroscopy, six important zirconium intermediates, as for instance Zr(C5H7O2)2(C5H6O2), and Zr(C5H6O2)2, are identified in the gas phase for the first time. The adiabatic ionization thresholds of intermediately formed zirconium species are estimated and the main products of their thermal decomposition, acetylacetone, acetylallene and acetone are characterized unambiguously and isomer-selectively. Based on all detected intermediates, we deduce the predominant pyrolysis pathways of the precursor in the temperature range from 400 to 900 K. Our findings are complemented by numerical simulations of the flow field in the microreactor, which show that the choice of dilution gas significantly influences the temperature profile and residence times in the microreactor, such that helium provides a more uniform flow field than argon and should preferentially be used. Graphical abstract Using a soft ionization method coupled to velocity map imaging (VMI), leads to valuable insights in the thermal decomposition of Zr(C5H7O2)4, used in the synthesis of functional nanomaterials and ceramic coatings. Thanks to the use of a microreactor, important gas}}, author = {{Grimm, Sebastian and Baik, Seung-Jin and Hemberger, Patrick and Kasper, Tina and Kempf, Andreas M. and Atakan, Burak}}, issn = {{0884-2914}}, journal = {{Journal of Materials Research}}, keywords = {{Mechanical Engineering, Mechanics of Materials, Condensed Matter Physics, General Materials Science}}, number = {{9}}, pages = {{1558--1575}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Insights into the decomposition of zirconium acetylacetonate using synchrotron radiation: Routes to the formation of volatile Zr-intermediates}}}, doi = {{10.1557/s43578-022-00566-6}}, volume = {{37}}, year = {{2022}}, }