TY - JOUR AB - The mechanical properties of joined structures are determined considerably by the chosen joining technology. With the aim of providing a method that enables a faster and more profound decision-making in the spatial distribution of joining points during product development, a new method for the load path analysis of joining points is presented. For an exemplary car body, the load type in the joining elements, i.e. pure tensile, shear and combined tensile-shear loads, is determined using finite element analysis (FEA). Based on the evaluated loads, the resulting load paths in selected joining points are analyzed using a 2D FE-model of a clinching point. State of the art methods for load path analysis are dependent on the selected coordinate system or the existing stress state. Thus, a general statement about the load transmission path is not possible at this time. Here, a novel method for the analysis of load paths is used, which is independent of the alignment of the analyzed geometry. The basic assumption of the new load path analysis method was confirmed by using a simple specimen with a square hole in different orientations. The results presented here show a possibility to display the load transmission path invariantly. In further steps, the method will be extended for 3D analysis and the investigation of more complex assemblies. The primary goal of this methodical approach is an even load distribution over the joining elements and the component. This will provide a basis for future design approaches aimed at reducing the number of joining elements in joined structures. AU - Steinfelder, Christian AU - Martin, Sven AU - Brosius, Alexander AU - Tröster, Thomas ID - 24541 JF - Key Engineering Materials SN - 1662-9795 TI - Load Path Transmission in Joining Elements ER - TY - JOUR AU - Martin, Sven AU - Tröster, Thomas ID - 24548 JF - ESAFORM 2021 TI - Joint point loadings in car bodies – the influence of manufacturing tolerances and scatter in material properties ER - TY - CONF AU - Stallmeister, Tim AU - Martin, Sven AU - Marten, Thorsten AU - Tröster, Thomas ID - 26994 TI - Experimental investigation on lightweight potentials of fiber-metal-laminates for automotive battery cases ER - TY - CONF AU - Dörner, Marius AU - Schöppner, Volker ID - 23835 T2 - ANTEC 21 TI - Development of an Analytical Mathematical Modelling Approach for a More Precise Description of Disperse Melting in Solid Bed Breaking Screw Concepts ER - TY - JOUR AU - Moritzer, Elmar AU - Richters, Maximilian ID - 31769 IS - 12 JF - Journal of Composites Science SN - 2504-477X TI - Injection Molding of Wood-Filled Thermoplastic Polyurethane ER - TY - JOUR AU - Moritzer, Elmar AU - Krassmann, Dimitri ID - 31757 JF - Welding in the World TI - Development of a new joining technology for hybrid joints of sheet metal and continuous fiber-reinforced thermoplastics ER - TY - CONF AU - Rozo Vasquez, Julian AU - Arian, Bahman AU - Riepold, Markus AU - Walther, Frank AU - Homberg, Werner AU - Trächtler, Ansgar ID - 30297 T2 - Proceedings of the 11th International Work­shop NDT in Progress TI - Magnetic Barkhausen noise analysis for microstructural effects separation during flow forming of metastable austenite 304L. ER - TY - CONF AB - One of the main objectives of production engineering is to reproducibly manufacture (complex) defect-free parts. To achieve this, it is necessary to employ an appropriate process or tool design. While this will generally prove successful, it cannot, however, offset stochastic defects with local variations in material properties. Closed-loop process control represents a promising approach for a solution in this context. The state of the art involves using this approach to control geometric parameters such as a length. So far, no research or applications have been conducted with closed-loop control for microstructure and product properties. In the project on which this paper is based, the local martensite content of parts is to be adjusted in a highly precise and reproducible manner. The forming process employed is a special, property-controlled flow-forming process. A model-based controller is thus to generate corresponding correction values for the tool-path geometry and tool-path velocity on the basis of online martensite content measurements. For the controller model, it is planned to use a special process or microstructure (correlation) model. The planned paper not only describes the experimental setup but also presents results of initial experimental investigations for subsequent use in the closed-loop control of α’-martensite content during flow-forming. AU - Arian, Bahman AU - Homberg, Werner AU - Riepold, Markus AU - Trächtler, Ansgar AU - Rozo Vasquez, Julian AU - Walther, Frank ID - 23465 KW - Flow-forming KW - Spinning KW - Process Strategy KW - Martensite Content KW - Property Control KW - Micromagnetic Measurement KW - Metastable Austenitic Stainless Steel SN - 978-2-87019-302-0 TI - Forming of metastable austenitic stainless steel tubes with axially graded martensite content by flow-forming ER - TY - CHAP AU - Ahrens, Stephan ED - Jakob, Reinhard ID - 44367 T2 - Lichtspiele. Kino und Film im Brucker Land von den Anfängen bis zum Siegeszug des Fernsehens. TI - Francesco (Franz) Stefani - Ein Regisseur mit barocken Anklägen. ER - TY - JOUR AB - AbstractIn child–robot interaction (cHRI) research, many studies pursue the goal to develop interactive systems that can be applied in everyday settings. For early education, increasingly, the setting of a kindergarten is targeted. However, when cHRI and research are brought into a kindergarten, a range of ethical and related procedural aspects have to be considered and dealt with. While ethical models elaborated within other human–robot interaction settings, e.g., assisted living contexts, can provide some important indicators for relevant issues, we argue that it is important to start developing a systematic approach to identify and tackle those ethical issues which rise with cHRI in kindergarten settings on a more global level and address the impact of the technology from a macroperspective beyond the effects on the individual. Based on our experience in conducting studies with children in general and pedagogical considerations on the role of the institution of kindergarten in specific, in this paper, we enfold some relevant aspects that have barely been addressed in an explicit way in current cHRI research. Four areas are analyzed and key ethical issues are identified in each area: (1) the institutional setting of a kindergarten, (2) children as a vulnerable group, (3) the caregivers’ role, and (4) pedagogical concepts. With our considerations, we aim at (i) broadening the methodology of the current studies within the area of cHRI, (ii) revalidate it based on our comprehensive empirical experience with research in kindergarten settings, both laboratory and real-world contexts, and (iii) provide a framework for the development of a more systematic approach to address the ethical issues in cHRI research within kindergarten settings. AU - Tolksdorf, Nils Frederik AU - Siebert, Scarlet AU - Zorn, Isabel AU - Horwath, Ilona AU - Rohlfing, Katharina J. ID - 24901 JF - International Journal of Social Robotics SN - 1875-4791 TI - Ethical Considerations of Applying Robots in Kindergarten Settings: Towards an Approach from a Macroperspective ER - TY - JOUR AU - Chormey, Dotse Selali AU - Tonbul, Güldeniz AU - Soylu, Güneş AU - Saygılar, Ahmet AU - Bakırdere, Sezgin ID - 44375 IS - 2 JF - Analytical Letters KW - Dispersive liquid-liquid microextraction (DLLME) KW - gas chromatography – mass spectrometry (GC-MS) KW - polycyclic aromatic hydrocarbons KW - QuEChERS SN - 0003-2719 TI - Determination of Four Priority Polycyclic Aromatic Hydrocarbons in Food Samples by Gas Chromatography – Mass Spectrometry (GC-MS) after Vortex Assisted Dispersive Liquid-Liquid Microextraction (DLLME) VL - 55 ER - TY - GEN AU - Ahrens, Stephan ID - 44386 T2 - In: Filmblatt 25:73/74 TI - Hermann Kappelhoff, Christine Lötscher, Daniel Illger (Hg.): Filmische Seitenblicke. Cinepoetische Exkursionen ins Kino von 1968. Berlin, Bosten: De Gruyter 2018 ER - TY - GEN AU - Ahrens, Stephan ID - 44381 T2 - In: Filmblatt 25:73/74 TI - Christina Gerhardt, Marco Abel (Hg.): Celluloid Revolt. German Screen Cultures and the Long 1968. Rochester: Camden House 2019 ER - TY - GEN AU - Ahrens, Stephan ID - 44392 T2 - Kinema Kommunal, Nummer 2, Juni 2021 TI - Sammler und Beobachter. Das Programm der diesjährigen Internationalen Kurzfilmtage Oberhausen, Dschungel (jungle World) ER - TY - GEN AU - Ahrens, Stephan ID - 44391 T2 - In: Filmdienst, 24.08.2021 TI - Guy Gilles und das Kino der Entwurzelung ER - TY - GEN AU - Ahrens, Stephan ID - 44426 TI - Biografie Cox Habbema ER - TY - GEN AU - Ahrens, Stephan ID - 44431 TI - Biografie Peter Rabenalt ER - TY - CHAP AU - Bruckner, Franziska AU - Eckel, Julia AU - Feyersinger, Erwin AU - Freisleben-Teutscher, Christian F. AU - Ohnmacht, Tina ED - Bruckner, Franziska ED - Hagler, Jürgen ED - Lang, Holger ED - Reinert, Maike Sarah ID - 44466 T2 - In Wirklichkeit Animation … TI - Bilden mit/zu Animation ER - TY - CHAP AU - Eckel, Julia ED - Bruckner, Franziska ED - Hagler, Jürgen ED - Lang, Holger ED - Reinert, Maike Sarah ID - 44465 T2 - In Wirklichkeit Animation ... TI - Tech Demo/Tech Doku. Zur Wirklichkeit des Animierens ER - TY - CHAP AU - Eckel, Julia ED - Kreuzer, Stefanie ID - 44467 T2 - FilmZeit – Zeitdimensionen des Films. TI - Zeitliche Komplexität im Film ER - TY - JOUR AU - Wübbeke, Andrea AU - Schöppner, Volker AU - Arndt, Theresa AU - Maras, Jan-Ole AU - Fitze, Marcus AU - Moltzahn, Christian AU - Wu, Tao AU - Niendorf, Thomas ID - 24383 JF - Polymers TI - Effect of nucleating additives on short- and long-term tensile strength and residual stresses of welded polypropylene samples ER - TY - THES AU - Wübbeke, Andrea ID - 37632 TI - Prozess-Struktur-Eigenschaftsbeziehung beim Heizelementschweißen von Polypropylen ER - TY - CHAP AU - Wiens, Eugen AU - Homberg, Werner AU - Arian, Bahman AU - Möhring, Kerstin AU - Walther, Frank ID - 30296 SN - 2367-1181 T2 - Forming the Future TI - Forming of Parts with Locally Defined Mechanical and Ferromagnetic Properties by Flow-Forming ER - TY - JOUR AU - Wischer, Christian AU - Wiens, Eugen AU - Homberg, Werner ID - 26082 JF - Journal of Advanced Joining Processes SN - 2666-3309 TI - Joining with versatile joining elements formed by friction spinning VL - 3 ER - TY - GEN ED - Wiens, Eugen ED - Wischer, Christian ED - Homberg, Werner ID - 22453 TI - Development of a novel adaptive joining technology employing Friction-Spun Joint Connectors (FSJC) ER - TY - JOUR AB - Multiprofessionelle Teams sind notwendiger Bestandteil inklusiver Schulen. Die Verteilung von Aufgaben, welche über die Zusammenarbeit von allgemeinen und sonderpädagogi­schen Lehrkräften im Unterricht hinausgehen, wurde bislang jedoch selten systematisch untersucht. Im Beitrag werden deskriptive Befunde aus dem Projekt BiFoKi (Bielefelder Fortbildungskonzept zur Kooperation in inklusiven Schulen) zu den Zuständigkeiten von allgemeinen (N = 170) und sonderpädagogischen Lehrkräften (N = 24) sowie Schulsozial­arbeiterinnen (N = 11) an inklusiven Sekundar-­ und Gesamtschulen präsentiert. Sie deuten auf eine Persistenz traditioneller Rollenmuster und Aufgabenverteilungen hin. Bei den befragten sonderpädagogischen Lehrkräften können zwei unterschiedliche Rollenmuster herausgearbeitet werden. Die Schulsozialarbeiterinnen weisen ein enges Arbeitsfeld mit einem Fokus auf Eltern­-Schule-­Kooperation auf. AU - Neumann, Phillip AU - Grüter, Sandra AU - Eckel, Lisa AU - Lütje-Klose, Birgit AU - Wild, Elke AU - Gorges, Julia ID - 34484 IS - 4 JF - Zeitschrift für Heilpädagogik KW - Inklusion KW - Sonderpädagogik KW - Sekundarstufe KW - Gesamtschulen KW - Kooperation KW - Schulsozialarbeit KW - BiFoKi SN - 0513-9066 TI - Aufgaben und Zuständigkeiten von allgemeinen und sonderpädagogischen Lehrkräften sowie Fachkräften der ­Schulsozialarbeit­ in­ inklusiven­ Schulen­ der­ Sekundarstufe I. Erste Ergebnisse aus dem BiFoKi-Projekt VL - 73 ER - TY - CHAP AU - Tecklenburg, Feline ED - Fehle, Hans Jörg ED - Langenbacher, Andrea ID - 44526 T2 - Dass die Welt wohnlich für alle wird. Klartexte, Anfragen, Perspektiven. Ina Praetorius zum 65. Geburtstag TI - Wirtschaft ist Care ist radikale Demokratie ER - TY - JOUR AB - This paper is devoted to algebro-geometric study of infinite dimensional Lie bialgebras, which arise from solutions of the classical Yang–Baxter equation. We regard trigonometric solutions of this equation as twists of the standard Lie bialgebra cobracket on an appropriate affine Lie algebra and work out the corresponding theory of Manin triples, putting it into an algebro-geometric context. As a consequence of this approach, we prove that any trigonometric solution of the classical Yang–Baxter equation arises from an appropriate algebro-geometric datum. The developed theory is illustrated by some concrete examples. AU - Burban, Igor AU - Abedin, R. ID - 44329 IS - 2 JF - Communications in Mathematical Physics TI - Algebraic geometry of Lie bialgebras defined by solutions of the classical Yang-Baxter equation VL - 387 ER - TY - BOOK AU - Adelmann, Ralf ID - 44546 TI - Listen und Rankings. Über Taxonomien des Populären ER - TY - BOOK AU - Buhl, Heike M. AU - Bonanati, Sabrina AU - Eickelmann, Birgit ID - 32464 SN - 978-3-8017-3074-1 TI - Schule in der digitalen Welt ER - TY - CHAP AU - Eickelmann, Birgit ID - 44678 T2 - Remote Schools. Schulisches Distanzlernen in und nach der Corona-Pandemie. TI - Digitale Schultransformation ganzheitlich gestalten ER - TY - GEN AU - Eickelmann, Birgit ID - 44680 TI - Lehren aus der Pandemie: Gleiche Chancen für alle Kinder und Jugendlichen sichern. Stellungnahme der Expert*innenkommission der Friedrich-Ebert-Stiftung ER - TY - CONF AB - Challenges in decisions on technical changes are the lack of knowledge about the expected impact and change propagation. Currently, no literature study contains a systematic differentiation and evaluation of existing approaches, which is a prerequisite for practitioners to select a suitable approach. This research aims at defining differentiation criteria as well as generally applicable requirements for evaluation. A four-step approach is used: systematic literature review on approaches for impact analysis of engineering changes (1), categorization and prioritization of approaches based on reoccuring elements (2), derivation of context specific requirements for evaluation (3), and evaluation of approaches (4). The result indicates existing potential of object-oriented modeling approaches. AU - Gräßler, Iris AU - Wiechel, Dominik ED - Krause, Dieter ED - Paetzold, Kristin ED - Wartzack, Sandro ID - 24280 KW - Engineering Change Management KW - Impact Analysis KW - Engineering Changes KW - Model-based Systems Engineering KW - Product Developmen T2 - DS 111: Proceedings of the 32nd Symposium Design for X TI - Systematische Bewertung von Auswirkungsanalysen des Engineering Change Managements ER - TY - CONF AU - Gräßler, Iris AU - Roesmann, Daniel AU - Wiechel, Dominik AU - Preuß, Daniel AU - Pottebaum, Jens ID - 26866 T2 - 54th CIRP Conference on Manufacturing Systems TI - Determine similarity of assembly operations using semantic technology ER - TY - CONF AU - Gräßler, Iris AU - Wiechel, Dominik AU - Pottebaum, Jens ID - 23392 T2 - Proceedings of 19th Drive Train Technology Conference (ATK 2021), 9. - 11. Mrz. 2021 TI - Role model of model-based systems engineering application ER - TY - CHAP AU - Schreckenberg, Stefan ED - Mecke, Jochen ED - Schoentjes, Pierre ED - Donnarieix, Anne-Sophie ID - 44693 T2 - Esthétique de la guerre - Éthique de la paix. Un siècle de littérature sur la Grande Guerre TI - Éthiques et esthétiques de la Grande Guerre chez des auteurs de la génération des petits-enfants ER - TY - CONF AB - Challenges of the development of mechatronic systems and corresponding production systems have increased steadily. Changes are primarily due to increased product complexity and the connection to the internet of things and services, enabling Cyber-Physical Systems (CPS) and Cyber-Physical Production Systems (CPPS). Major innovations of the revised VDI guideline 2206 for developing mechatronic systems are systems thinking as a core element and six checkpoints for structuring deliverables along the V-Model. These checkpoints serve for orientation in result progress and thus enable a structured and complete development process. However, tasks and checkpoints of the new guideline focus on the product development itself without integrating the development of related CPPS, enabling optimization simultaneously to system development. Implications are derived by a three-step analysis. The paper at hand contributes fundamental extensions of the checkpoint questions regarding integrated CPPS development. These questions provide methodical support for system developers of CPPS for CPS by enabling the project manager to check the status, schedule further development steps and evaluate the maturity of the whole, integrated development. AU - Gräßler, Iris AU - Wiechel, Dominik AU - Roesmann, Daniel AU - Thiele, Henrik ID - 24080 KW - Cyber-Physical Production System (CPPS) KW - V-Model KW - Product System Development KW - Integrated Development KW - VDI 2206 SN - 2212-8271 T2 - Procedia CIRP TI - V-model based development of cyber-physical systems and cyber-physical production systems ER - TY - CONF AB - In order to optimize production processes and to avoid errors, it is not only necessary to automate processes, but also to integrate workers with their individual personality and skill profiles. For this purpose, human factors should be considered in the entire design process. The integrated view of mental human models, the cognitive demand of the working environment and the automation design is essential. Human-System Integration (HSI) constitutes a promising approach. Current model-based approaches offer possibilities to analyze and optimize tasks within an overall system, but they still lack integration. This leads to the research question: How can human factors be integrated into a system model of a socio-technical, Cyber-Physical Production System? The paper at hand contributes an approach of human factor integration into the procedure of Model-Based Systems Engineering for Cyber-Physical Production Systems (CPPS). The approach combines a system model of a CPPS with HSI concepts. In accordance to the benefits of MBSE, SysML is selected to integrate human factors in the development process of a CPPS. The approach is divided into five steps, which includes the extension of the SysML meta model. This allows the optimization of skill-based human-machine interaction. Defined HSI-Profiles enable system developers to integrate employee requirements at early stages within the development process. The approach is demonstrated by the maintenance of a 3D-Printer as a case example. This research enables system developers to depict individual workers with the help of the developed concepts and systematically integrate them into the development process of a CPPS. AU - Gräßler, Iris AU - Wiechel, Dominik AU - Roesmann, Daniel ID - 24281 SN - 2212-8271 T2 - Procedia CIRP TI - Integrating human factors in the model based development of cyber-physical production systems ER - TY - CONF AU - Hesse, Philipp AU - Gräßler, Iris ED - Biedermann, Hubert ED - Posch, Wolfgang ED - Vorbach, Stefan ID - 24444 T2 - Digitalisierung im Kontext von Nachhaltigkeit und Klimawandel TI - Digitaler Zwilling zur Gestaltung der Prozesse im End-of-Life VL - 9 ER - TY - GEN AU - Gräßler, Iris AU - Hentze, Julian AU - Hesse, Philipp AU - Preuß, Daniel AU - Thiele, Henrik AU - Wiechel, Dominik AU - Bothen, Martin AU - Bruckmann, Tobias AU - Dattner, Michael AU - Ehl, Thomas AU - Hawlas, Martin AU - Krimpmann, Christoph AU - Lachmayer, Roland AU - Knöchelmann, Marvin AU - Mock, Randolf AU - Mozgova, Iryna AU - Schneider, Maximilian AU - Stollt, Guido ID - 27680 TI - VDI/VDE 2206 - Entwicklung mechatronischer und cyber-physischer Systeme ER - TY - CONF AB - The battle of developing hardware Trojans and corresponding countermeasures has taken adversaries towards ingenious ways of compromising hardware designs by circumventing even advanced testing and verification methods. Besides conventional methods of inserting Trojans into a design by a malicious entity, the design flow for field-programmable gate arrays (FPGAs) can also be surreptitiously compromised to assist the attacker to perform a successful malfunctioning or information leakage attack. The advanced stealthy malicious look-up-table (LUT) attack activates a Trojan only when generating the FPGA bitstream and can thus not be detected by register transfer and gate level testing and verification. However, also this attack was recently revealed by a bitstream-level proof-carrying hardware (PCH) approach. In this paper, we present a novel attack that leverages malicious routing of the inserted Trojan circuit to acquire a dormant state even in the generated and transmitted bitstream. The Trojan's payload is connected to primary inputs/outputs of the FPGA via a programmable interconnect point (PIP). The Trojan is detached from inputs/outputs during place-and-route and re-connected only when the FPGA is being programmed, thus activating the Trojan circuit without any need for a trigger logic. Since the Trojan is injected in a post-synthesis step and remains unconnected in the bitstream, the presented attack can currently neither be prevented by conventional testing and verification methods nor by recent bitstream-level verification techniques. AU - Ahmed, Qazi Arbab AU - Wiersema, Tobias AU - Platzner, Marco ID - 20681 T2 - 2021 Design, Automation & Test in Europe Conference & Exhibition (DATE) TI - Malicious Routing: Circumventing Bitstream-level Verification for FPGAs ER - TY - GEN AU - Dewerth, Mats-Ole AU - Neukötter, Moritz ID - 42989 TI - Entwicklung eines Versuchsaufbaus zur rheo-optischen Untersuchung des Dehnverhaltens von Polymerschmelzen und -lösungen am Hochdruck-Kapillarrheometer (Studienarbeit) ER - TY - GEN AU - Hütte, Marvin AU - Neukötter, Moritz ID - 43004 TI - Weiterentwicklung des Versuchsaufbaus zur Untersuchung von Polymerschmelzen und -lösungen am Hochdruck-Kapillarrheometer ER - TY - JOUR AU - Mattiolo, Davide AU - Steffen, Eckhard ID - 23456 IS - 1 JF - Journal of Graph Theory KW - factorization KW - perfect matchings KW - regular graphs KW - r-graphs SN - 0364-9024 TI - Highly edge‐connected regular graphs without large factorizable subgraphs VL - 99 ER - TY - JOUR AU - Klopp, Antje AU - Steffen, Eckhard ID - 21827 JF - Graphs and Combinatorics SN - 0911-0119 TI - Fractional Matchings, Component-Factors and Edge-Chromatic Critical Graphs ER - TY - JOUR AU - Steffen, Eckhard AU - Vogel, Alexander ID - 13445 JF - European J. Combinatorics TI - Concepts of signed graph coloring VL - 91 ER - TY - CHAP AU - Dopheide, F. AU - Freitag, Christine AU - Koch, L. AU - Struchholz, C. ED - Gerholz, Karl-Heinz ID - 37537 T2 - Impulse zu Methoden in der deutschsprachigen Civic Engagement-Forschung TI - Gesellschaftliche Wirkprozesse des Civic Engagement qualitativ erforschen ER - TY - JOUR AU - Freitag, Christine ID - 37539 IS - 4 JF - Katechetische Blätter TI - Denk-Wege zu einer religionssensiblen Schulkultur: erziehungswissenschaftliche Perspektiven ER - TY - CHAP AU - Freitag, Christine ED - Gerholz, Karl-Heinz ID - 37533 T2 - Impulse zu Methoden in der deutschsprachigen Civic Engagement-Forschung TI - Gesellschaftlich Wirkprozesse des Civic Engagement qualitativ erforschen ER - TY - GEN AB - Erklärvideos gewinnen auch im Kontext des Physikunterrichts verstärkt an Relevanz. Um zu evaluieren, welche Gestaltungsaspekte ein wirkungsvolles Erklärvideo ausmachen, ist es das Ziel der vorliegenden Masterarbeit herauszufinden, welchen Einfluss die kohärente Gestaltung eines Erklärvideos hat. Dazu wird die Forschungsfrage gestellt: „Welchen Einfluss hat die kohärente Gestaltung eines Erklärvideos auf den dadurch hervorgerufenen Lernzuwachs im Vergleich zu einem in der Hinsicht nicht optimierten Video?“ Um die Forschungsfrage zu beantworten, ist eine quantitative Studie im Prä- und Posttestdesign mit Schüler:innen der Jahrgangsstufe Q1 durchgeführt worden. Außerdem wurde in verschiedenen Kategorien nach einer Bewertung der Videos gefragt. Die Auswertung zeigt, dass durch das optimierte Video mit einem kleinen Effekt bessere Ergebnisse erzielt wurden, diese aber nicht signifikant und auch nicht für alle Aufgaben besser sind. Die Schüler:innen bewerteten das nicht optimierte Video in allen Kategorien besser als das optimierte Video. Auch dieses Ergebnis ist nicht signifikant. AU - Hörnlein, Madeleine ID - 35839 TI - Untersuchung von Erklärvideos im Physikunterricht - Wirksamkeit von Kohärenz ER -