TY - JOUR AB - This Special Issue on “Functional Nanoporous Materials” in the MDPI journal nanomaterials features seven original papers ... AU - Weinberger, Christian AU - Tiemann, Michael ID - 25902 JF - Nanomaterials SN - 2079-4991 TI - Functional Nanoporous Materials ER - TY - GEN AU - Kraft, Kerstin ID - 42870 TI - Kleider in Bewegung. Frauenmode seit 1850 ER - TY - CONF AU - Petrov, Dmitry AU - Hilleringmann, Ulrich ID - 39405 T2 - 2020 IEEE SENSORS TI - Water-based primary cell for powering of wireless sensors ER - TY - BOOK AB - Die h-Moll-Messe und die Johannes-Passion sind unzweifelhaft zwei Hauptwerke Johann Sebastian Bachs. Der vorliegende Band versammelt die Vorträge aus zwei Symposien, die im Oktober 2017 und März 2019 in Essen abgehalten worden sind. Im Dialog zwischen Theologie und Musikwissenschaft werden in den Beiträgen unterschiedliche Aspekte fokussiert, die je nach Werk zum einen eher auf dem Gebiet der Genese, Rezeption und Edition (h-Moll-Messe), zum anderen eher auf dessen theologischem oder musikgeschichtlichem Kontext (Johannes-Passion) liegen. In dieser interdisziplinären Zusammenstellung werden zahlreiche neue Facetten der Werke und ihrer Kontexte erhellt. ED - Höink, Dominik ED - Jacob, Andreas ID - 36432 SN - 978-3-487-15916-4 TI - Musikwissenschaft und Theologie im Dialog - Johann Sebastian Bachs "h-Moll-Messe" und "Johannes-Passion" VL - 20 ER - TY - CHAP AU - Höink, Dominik ED - Höink, Dominik ED - Jacob, Andreas ID - 36461 SN - 9783487159164 T2 - Musikwissenschaft und Theologie im Dialog - Johann Sebastian Bachs "h-Moll-Messe" und "Johannes-Passion" TI - Die h-Moll-Messe szenisch: Rosamund Gilmore (1986), Achim Freyer (1996) und Jochen Biganzoli (2017) VL - 20 ER - TY - CHAP AU - Dehmel, Lukas AU - Gerhardts, Lara AU - Meister, Dorothee M. ED - Meister, Dorothee M. ED - Mindt, Ilka ID - 43144 T2 - Mobile Medien im Schulkontext TI - Zur Stabilisierung medienbezogener Handlungsroutinen im Lehrer*innenberuf. Längsschnittliche Betrachtungen zur Integration von Tablets in den Arbeitsalltag ER - TY - GEN AU - Bohnenkamp, Björn AU - Burkhardt, Marcus AU - Grashöfer, Katja AU - Hlukhovych, Adrianna AU - Krewani, Angela AU - Matzner, Tobias AU - Missomelius, Petra AU - Shnayien, Marie-Luise ID - 42912 TI - Online-Lehre 2020 – Eine medienwissenschaftliche Perspektive. Diskussionspapier Nr. 10 ER - TY - BOOK ED - Burkhardt, Marcus ED - Grashöfer, Katja ED - Shnayien, Marie-Luise ID - 42916 TI - Explorations in Digital Cultures ER - TY - CHAP AB - Jeder Wissenschaftsdisziplin hilft ein Bewusstsein ihrer Geschichte und die Kenntnis ihrer Vielfalt, Paradigmen und Entwicklungsmöglichkeiten. Darauf basierend können Forschende ihr spezifisches Potential, Wissen und Handlungsrepertoire entfalten. Dabei ist Geschichtsschreibung und historische Berufsbildungsforschung immer zugleich selbst gefangen in ihrer je eigenen Zeit, beschränkt durch die Perspektiven der Personen, die sich an dem Rückblick beteiligen. Das macht Geschichte auch immer zur Geschichte der Herrschenden, die eine spezifische Perspektive und die mit ihr verbundene Forschung schreibend tradieren. Deshalb ist Vielfalt für die historische Berufsbildungsforschung so wertvoll, weil sie sich gegen verengte, eindimensionale Retrospektive stellt, gewissermaßen in die Ritzen und Fugen der Zeit schauen lässt. Basierend auf einer Tagung der Herausgeber im September 2019 zu „Retrospektiven, Perspektiven & Synergien einer Historischen Berufsbildungs- und Wissenschaftsforschung" an der Universität Rostock, entfaltet sich die Bandbreite der historischen Berufsbildungsforschung. Der Band vereint paradigmatische, mal stärker biografischen Zugänge sowie systemisch-gesellschaftspolitische und schließlich Analysen zur Genese der Wissenschaftsdisziplin. In den Beiträgen wird dem Einfluss von Einzelpersönlichkeiten und Forschungsparadigmen ebenso wie dem von Bildungssystemen am Beispiel der DDR, Skandinaviens und der bundesdeutschen Bildungspolitik nachgegangen. Vereint sind sowohl Beiträge zur Entstehung der Berufs- und Wirtschaftspädagogik, zur Rekonstruktion der Benachteiligtenförderung, Soziökonomie, Pflegedidaktik und Frauenforschung als auch Analysen berufsspezifischer Betrachtungen am Beispiel des Druckgewerbes, der Offiziere und der Ausbilder*innen. AU - Heisler, Dietmar ED - Kaiser, Franz ED - Götzel, Mathias ID - 37004 KW - Benachteiligtenförderung KW - historische Berufsbildungsforschung KW - berufliche Förderung KW - Sozialpädagogik T2 - Historische Berufsbildungsforschung Perspektiven auf Wissenschaftsgenese und -dynamik. TI - Reparaturbetrieb, Inklusion und Fachkräftesicherung Transformation der Benachteiligtenförderung in Deutschland. ER - TY - JOUR AU - Hälterlein, Jens ID - 43352 IS - 1 JF - TATuP TI - (Un)Sicherheitsproduktion im Cyberspace. Cybersecurity-Architekturen in Deutschland und der Schweiz VL - 29 ER - TY - JOUR AU - Hälterlein, Jens ID - 43351 JF - Soziopolis TI - Die Simulation der Pandemie..Ein Beitrag zur Reihe "Sicherheit in der Krise". ER - TY - CONF AU - Engemann, Mario ID - 43411 TI - Lehrerkooperation und Digitalisierung - Gestaltung digital-kooperativer Arbeitsbeziehungen und der Stellenwert einer Fachlichkeitskonzeption von Lehrenden der Fächergruppe Erziehungswissenschaft ER - TY - GEN AU - Schroeter-Wittke, Harald ID - 41071 SN - 0540–6226 T2 - Jahrbuch für Evangelische Kirchengeschichte des Rheinlandes TI - Gero Fuchs: Gewinn als Umbruch der Ordnung? Der Fall des Siegburger Töpfers Peter Knütgen im 16. Jahrhundert, Tübingen 2019 VL - 69 ER - TY - GEN AU - Schroeter-Wittke, Harald ID - 41072 SN - 0540–6226 T2 - Jahrbuch für Evangelische Kirchengeschichte des Rheinlandes TI - Laura Schmidt: Weihnachtliches Theater. Zur Entstehung und Geschichte einer bürgerlichen Fest- und Theaterkultur, Bielefeld 2017 VL - 69 ER - TY - JOUR AB - Dieser Beitrag basiert auf den Ergebnissen eines im Jahr 2019 abgeschlossenen Promotionsvorhabens im Rahmen des interventiv angelegten, in Dortmund angesiedelten, Forschungsprojekts KidSmart – Medienkompetent zum Schulübergang zu den Mediensozialisationsbedingungen von deutschen, deutsch-türkischen und deutsch-anderen vier und fünf Jahre alten Mädchen und Jungen in den sozialen Feldern Familie und Kita. Im vorliegenden Beitrag wird auf die Befragung der ErzieherInnen fokussiert, die mittels halbstandardisierter Fragebögen durchgeführt wurde. Untersucht wurde, wie sich der sprachlich-kulturelle Hintergrund der Kinder für das Kommunikationsverhalten der ErzieherInnen mit den Kindern in pädagogischer Anschlusskommunikation und in Gesprächen mit den Eltern der Kinder auswirkt. Hier wurde auch eine intersektionale Perspektive eingenommen und parallel zur Herkunftskultur auch das biologische Geschlecht der Kinder in die Auswertung einbezogen. Es stellte sich heraus, dass die Kommunikation sowohl mit den Kindern als auch mit den Eltern in Abhängigkeit der Herkunftskultur der Kinder und auch ihres Geschlechtes erfolgt. Pädagogisch ist zu fragen, inwiefern es den pädagogischen Fachkräften gelingt, benachteiligende Ausgangslagen auch tatsächlich auszugleichen und Partizipation im Sinne von Inklusion zu ermöglichen. Ausgehend von diesen Ergebnissen wird in diesem Beitrag die Bedeutung und Relevanz der Überschneidungen und Interdependenzen von Ungleichheitsdimensionen für eine inklusionsorientierte Qualifikation pädagogischer Fachkräfte in institutionell-frühkindlichen Medienbildungskontexten diskutiert. Konkret richtet sich der Blick auf die sprachlich-kulturelle Ein- und Vielfalt in den frühkindlichen Einrichtungen sowie die Wahrnehmungen und Einschätzungen der pädagogischen Fachkräfte, die sie in Hinblick auf die Kooperationswilligkeit der Eltern, die Anschlusskommunikation mit den Kindern und schließlich die medialen Fähig- und Fertigkeiten der Kinder äußern. AU - Günesli, Habib ID - 44057 IS - 3 JF - QfI - Qualifizierung für Inklusion Online-Zeitschrift zur Forschung über Aus-, Fort- und Weiterbildung pädagogischer Fachkräfte TI - Inklusion und Intersektionalität im Kontext frühkindlicher Medienbildungsforschung. Sprachkulturelle Homogenität und Diversität sowie ihre Auswirkungen auf pädagogische Kommunikation in der Frühen Bildung VL - 2 ER - TY - CONF AU - Chadha, Gavneet Singh AU - Meydani, Elnaz AU - Schwung, Andreas ID - 44074 T2 - Recent Advances in Big Data and Deep Learning: Proceedings of the INNS Big Data and Deep Learning Conference INNSBDDL2019, held at Sestri Levante, Genova, Italy 16-18 April 2019 TI - Regularizing neural networks with gradient monitoring ER - TY - JOUR AB - We devise a method to certify nonclassical features via correlations of phase-space distributions by unifying the notions of quasiprobabilities and matrices of correlation functions. Our approach complements and extends recent results that were based on Chebyshev's integral inequality \cite{BA19}. The method developed here correlates arbitrary phase-space functions at arbitrary points in phase space, including multimode scenarios and higher-order correlations. Furthermore, our approach provides necessary and sufficient nonclassicality criteria, applies to phase-space functions beyond s-parametrized ones, and is accessible in experiments. To demonstrate the power of our technique, the quantum characteristics of discrete- and continuous-variable, single- and multimode, as well as pure and mixed states are certified only employing second-order correlations and Husimi functions, which always resemble a classical probability distribution. Moreover, nonlinear generalizations of our approach are studied. Therefore, a versatile and broadly applicable framework is devised to uncover quantum properties in terms of matrices of phase-space distributions. AU - Bohmann, Martin AU - Agudelo, Elizabeth AU - Sperling, Jan ID - 26290 JF - Quantum SN - 2521-327X TI - Probing nonclassicality with matrices of phase-space distributions ER - TY - JOUR AU - Sperling, Jan AU - Walmsley, I A ID - 26292 JF - Physica Scripta SN - 0031-8949 TI - Classical evolution in quantum systems ER - TY - JOUR AB - Semiconductor microcavities are frequently studied in the context of semiconductor lasers and in application-oriented fundamental research on topics such as linear and nonlinear polariton systems, polariton lasers, polariton pattern formation, and polaritonic Bose–Einstein condensates. A commonly used approach to describe theoretical properties includes a phenomenological single-mode equation that complements the equation for the nonlinear optical response (interband polarization) of the semiconductor. Here, we show how to replace the single-mode equation by a fully predictive transfer function method that, in contrast to the single-mode equation, accounts for propagation, retardation, and pulse-filtering effects of the incident light field traversing the distributed Bragg reflector (DBR) mirrors, without substantially increasing the numerical complexity of the solution. As examples, we use cavities containing GaAs quantum wells and transition-metal dichalcogenides (TMDs). AU - Carcamo, M. AU - Schumacher, Stefan AU - Binder, R. ID - 40438 IS - 22 JF - Applied Optics KW - Atomic and Molecular Physics KW - and Optics KW - Engineering (miscellaneous) KW - Electrical and Electronic Engineering SN - 1559-128X TI - Transfer function replacement of phenomenological single-mode equations in semiconductor microcavity modeling VL - 59 ER - TY - JOUR AU - Ma, Xuekai AU - Kartashov, YV AU - Kavokin, A AU - Schumacher, Stefan ID - 20586 IS - 20 JF - Optics Letters SN - 0146-9592 TI - Chiral condensates in a polariton hexagonal ring. VL - 45 ER - TY - JOUR AU - von Bardeleben, H. J. AU - Rauls, E. AU - Gerstmann, Uwe ID - 40444 IS - 18 JF - Physical Review B SN - 2469-9950 TI - Carbon vacancy-related centers in 3C-silicon carbide: Negative-U properties and structural transformation VL - 101 ER - TY - JOUR AB -

EPR spectroscopy reveals the universality class and dynamic effects of the [NH4][Zn(HCOO)3] hybrid formate framework.

AU - Navickas, Marius AU - Giriūnas, Laisvydas AU - Kalendra, Vidmantas AU - Biktagirov, Timur AU - Gerstmann, Uwe AU - Schmidt, Wolf Gero AU - Mączka, Mirosław AU - Pöppl, Andreas AU - Banys, Jūras AU - Šimėnas, Mantas ID - 17070 JF - Physical Chemistry Chemical Physics SN - 1463-9076 TI - Electron paramagnetic resonance study of ferroelectric phase transition and dynamic effects in a Mn2+ doped [NH4][Zn(HCOO)3] hybrid formate framework VL - 22 ER - TY - JOUR AU - Biktagirov, Timur AU - Gerstmann, Uwe ID - 29745 IS - 2 JF - Physical Review Research KW - General Engineering SN - 2643-1564 TI - Spin-orbit driven electrical manipulation of the zero-field splitting in high-spin centers in solids VL - 2 ER - TY - JOUR AB - Density-functional theory calculations of (TiO2)n clusters (n = 1–5) in the gas phase and adsorbed on pristine graphene as well as graphene quantum dots are presented. The cluster adsorption is found to be dominated by van der Waals forces. The electronic structure and in particular the excitation energies of the bare clusters and the TiO2/graphene composites are found to vary largely in dependence on the size of the respective constituents. This holds in particular for the energy and the spatial localization of the highest occupied and lowest unoccupied molecular orbitals. In addition to a substantial gap narrowing, a pronounced separation of photoexcited electrons and holes is predicted in some instances. This is expected to prolong the lifetime of photoexcited carriers. Altogether, TiO2/graphene composites are predicted to be promising photocatalysts with improved electronic and photocatalytic properties compared to bulk TiO2. AU - Badalov, Sabuhi AU - Wilhelm, René AU - Schmidt, Wolf Gero ID - 19189 JF - Journal of Computational Chemistry SN - 0192-8651 TI - Photocatalytic properties of graphene‐supported titania clusters from density‐functional theory ER - TY - JOUR AB - AbstractSemiconductor quantum dots are excellent candidates for ultrafast coherent manipulation of qubits by laser pulses on picosecond timescales or even faster. In inhomogeneous ensembles a macroscopic optical polarization decays rapidly due to dephasing, which, however, is reversible in photon echoes carrying complete information about the coherent ensemble dynamics. Control of the echo emission time is mandatory for applications. Here, we propose a concept to reach this goal. In a two-pulse photon echo sequence, we apply an additional resonant control pulse with multiple of 2π area. Depending on its arrival time, the control slows down dephasing or rephasing of the exciton ensemble during its action. We demonstrate for self-assembled (In,Ga)As quantum dots that the photon echo emission time can be retarded or advanced by up to 5 ps relative to its nominal appearance time without control. This versatile protocol may be used to obtain significantly longer temporal shifts for suitably tailored control pulses. AU - Kosarev, Alexander N. AU - Rose, Hendrik AU - Poltavtsev, Sergey V. AU - Reichelt, Matthias AU - Schneider, Christian AU - Kamp, Martin AU - Höfling, Sven AU - Bayer, Manfred AU - Meier, Torsten AU - Akimov, Ilya A. ID - 20773 IS - 1 JF - Communications Physics SN - 2399-3650 TI - Accurate photon echo timing by optical freezing of exciton dephasing and rephasing in quantum dots VL - 3 ER - TY - JOUR AB - Vortices are topological objects representing the circular motion of a fluid. With their additional degree of freedom, the vorticity, they have been widely investigated in many physical systems and different materials for fundamental interest and for applications in data storage and information processing. Vortices have also been observed in non-equilibrium exciton-polariton condensates in planar semiconductor microcavities. There they appear spontaneously or can be created and pinned in space using ring-shaped optical excitation profiles. However, using the vortex state for information processing not only requires creation of a vortex but also efficient control over the vortex after its creation. Here we demonstrate a simple approach to control and switch a localized polariton vortex between opposite states. In our scheme, both the optical control of vorticity and its detection through the orbital angular momentum of the emitted light are implemented in a robust and practical manner. AU - Meier, Torsten AU - Ma, Xuekai AU - Berger, Bernd AU - Aßmann, Marc AU - Driben, Rodislav AU - Schneider, Christian AU - Höfling, Sven AU - Schumacher, Stefan ID - 43747 IS - 1 JF - Nature communications TI - Realization of all-optical vortex switching in exciton-polariton condensates VL - 11 ER - TY - CONF AU - Hannes, Wolf-Rüdiger AU - Meier, Torsten ED - Betz, Markus ED - Elezzabi, Abdulhakem Y. ID - 20770 SN - 9781510633193 T2 - Ultrafast Phenomena and Nanophotonics XXIV TI - k.p-based multiband simulations of non-degenerate two-photon absorption in bulk GaAs VL - 11278 ER - TY - JOUR AU - Hannes, W.-R. AU - Trautmann, Alexander AU - Stein, M. AU - Schäfer, F. AU - Koch, M. AU - Meier, Torsten ID - 20563 IS - 7 JF - Physical Review B TI - Strongly nonresonant four-wave mixing in semiconductors VL - 101 ER - TY - JOUR AU - Song, Xiaohong AU - Yang, Shidong AU - Zuo, Ruixin AU - Meier, Torsten AU - Yang, Weifeng ID - 20772 JF - Physical Review A SN - 2469-9926 TI - Enhanced high-order harmonic generation in semiconductors by excitation with multicolor pulses VL - 101 ER - TY - JOUR AU - Bocchini, Adriana AU - Eigner, Christof AU - Silberhorn, Christine AU - Schmidt, Wolf Gero AU - Gerstmann, Uwe ID - 20682 JF - Phys. Rev. Materials TI - Understanding gray track formation in KTP: Ti^3+ centers studied from first principles VL - 4 ER - TY - CONF AU - Müller, Inez ID - 44159 SN - 978-3-86205-600-2 TI - Generationelle und gesellschaftliche Differenzen im wiedervereinigten Deutschland - "Der neunzigste Geburtstag. Ein ländliches Idyll" von Günter de Bruyn in postkolonialer Lesart. VL - 11 ER - TY - JOUR AU - Müller, Inez ID - 44160 JF - Peter Weiss Jahrbuch SN - 978-3-86110-748-4 TI - Transmediale und transkulturelle Schreibweisen im Exil der Gegenwart - Prosa und Lyrik syrischer Autoren in Europa VL - 28 ER - TY - CHAP AU - Moritzer, Elmar AU - Hüttner, M. AU - Henning, Bernd AU - Webersen, Manuel ID - 24479 T2 - Advances in Polymer Processing 2020 TI - The Influence of Hydrothermal Aging on the Material Properties of Continuous Fiber-Reinforced Thermoplastics and its Non-Destructive Characterization ER - TY - JOUR AU - Grabo, Matti AU - Staggenborg, Christoph AU - Philippi, Kai Alexander AU - Kenig, Eugeny ID - 22266 JF - Frontiers in Energy Research SN - 2296-598X TI - Modeling and Optimization of Rectangular Latent Heat Storage Elements in an Air-Guided Heat Storage System VL - 8 ER - TY - JOUR AB - The influence of latent heat storage elements on the cooling performance and the temperature rise time of household refrigerating appliances is studied experimentally in the context of the “new global refriger- ator standard”IEC 62552:2015. In addition to the daily energy consumption, this international standard- ization introduced performance tests for cooling capacity and temperature rise time. While the cooling capacity has long been anchored in various test procedures of consumer organizations, the temperature rise time, which has only been tested on freezers so far, will be a decisive factor in the future. Moreover, the need for so-called "smart appliances" that may balance power consumption is increasing since such devices may compensate the volatility of renewable energies and thus stabilize the power grid. Against this background, eight commercial household refrigerators and refrigerator-freezers are equipped with polymer-bound phase change materials (PCM) and their performance is determined under the new stan- dard test conditions. The results show that the introduction of PCM increases the cooling capacity by up to 33 % and also increases the temperature rise time by up to 145 %, without affecting power consump- tion, as compared to the unmodified refrigeration appliances. AU - Sonnenrein, Gerrit AU - Baumhögger, Elmar AU - Elsner, Andreas AU - Morbach, A. AU - Neukötter, Moritz AU - Paul, Andreas AU - Vrabec, J. ID - 21514 JF - International Journal of Refrigeration SN - 0140-7007 TI - Improving the performance of household refrigerating appliances through the integration of phase change materials in the context of the new global refrigerator standard IEC 62552:2015 VL - 119 ER - TY - JOUR AB - Despite the omnipresence of household refrigeration appliances, there is still a lack of knowledge about their agerelated efficiency loss over time. Past studies provide basic evidence for increasing electricity consumption of cooling appliances with ageing but fail to investigate the associated technical wear. Concentrating on the degradation of the thermal insulation, we first determined the ageing process of sealed samples of polyurethane rigid foam by investigating changes in cell gas composition and thermal conductivity over time. Simultaneously, the main challenge was to develop an approach that investigates the age-related efficiency loss of the insulation without its destruction. This testing procedure is referred to as the Bonn method. The non-destructive Bonn method was applied to varying refrigerator models in a series of successive experiments to evaluate the insulation degradation over time. Subsequently, the physical relationship between the test value of the Bonn method and the heat transfer through the multi-layered compartment walls of domestic refrigeration appliances was established, ultimately characterising the degrading insulation in terms of increasing heat transfer. Our results give substantiated evidence that the efficiency loss of cooling appliances is greatly influenced by insulation degradation over time. The ageing of sealed samples of polyurethane rigid foam indicates a large initial increase of thermal conductivity by 15% within the first year, corresponding to a change in cell gas composition. These results are in line with those of the Bonn method, emphasising an increasing heat flow through the multi-layered compartment walls of domestic refrigerators with ageing. Therewith, the present study is of significance to a wide range of stakeholders and forms the basis for future research. AU - Hueppe, Christian AU - Geppert, Jasmin AU - Stamminger, Rainer AU - Wagner, Hendrik AU - Hoelscher, Heike AU - Vrabec, Jadran AU - Paul, Andreas AU - Elsner, Andreas AU - Becker, Wolfgang AU - Gries, Ulrich AU - Freiberger, Alfred ID - 21512 JF - Applied Thermal Engineering SN - 1359-4311 TI - Age-related efficiency loss of household refrigeration appliances: Development of an approach to measure the degradation of insulation properties VL - 173 ER - TY - GEN AB - Due to the trend towards lightweight design in car body development mechanical joining technologies become increasingly important. These techniques allow for the joining of dissimilar materials and thus enable multi-material design, while thermic joining methods reach their limits. Semi-tubular self-piercing riveting is an important mechanical joining technology. The rivet production, however, is costly and time-consuming, as the process consists of several process steps including the heat treatment and coating of the rivets in order to achieve an adequate strength and corrosion resistance. The use of high nitrogen steel as rivet material leads to the possibility of reducing process steps and hence increasing the efficiency of the process. However, the high tool loads being expected due to the high strain hardening of the material are a major challenge during the rivet production. Thus, there is a need for appropriate forming strategies, such as the manufacturing of the rivets at elevated temperatures. Prior investigations led to the conclusion that forming already at 200 °C results in a distinct reduction of the yield strength. To create a deeper understanding of the forming behaviour of high nitrogen steel at elevated temperatures, compression tests were conducted in a temperature range between room temperature and 200 °C. The determined true stress – true strain curves are the basis for the further process and tool design of the rivet production. Another key factor for the rivet manufacturing at elevated temperatures is the influence of the process temperature on the tribological conditions. For this reason, ring compression tests at room temperature and 200 °C are carried out. The friction factors are determined on the basis of calibration curves resulting from the numerical analysis of the ring compression process. The investigations indicate that the friction factor at 200 °C is significantly higher compared to room temperature. This essential fact has to be taken into account for the process and tool design for the rivet production using high nitrogen steel. ED - Kuball, Clara-Maria ED - Jung, R ED - Uhe, Benedikt ED - Meschut, Gerson ED - Merklein, Marion ID - 19974 KW - High nitrogen steel KW - Self-piercing riveting KW - Joining by forming KW - Bulk forming KW - Strain hardening TI - Influence of the process temperature on the forming behaviour and the friction during bulk forming of high nitrogen steel VL - 1 ER - TY - JOUR AB - As a result of lightweight design, increased use is being made of high-strength steel and aluminium in car bodies. Self-piercing riveting is an established technique for joining these materials. The dissimilar properties of the two materials have led to a number of different rivet geometries in the past. Each rivet geometry fulfils the requirements of the materials within a limited range. In the present investigation, an improved rivet geometry is developed, which permits the reliable joining of two material combinations that could only be joined by two different rivet geometries up until now. Material combination 1 consists of high-strength steel on both sides, while material combination 2 comprises aluminium on the punch side and high-strength steel on the die side. The material flow and the stress and strain conditions prevailing during the joining process are analysed by means of numerical simulation. The rivet geometry is then improved step-by-step on the basis of this analysis. Finally, the improved rivet geometry is manufactured and the findings of the investigation are verified in experimental joining tests. AU - Uhe, Benedikt AU - Kuball, Clara-Maria AU - Merklein, Marion AU - Meschut, Gerson ID - 19973 JF - Production Engineering KW - Self-piercing riveting KW - Joining technology KW - Rivet geometry KW - Multi-material design KW - High-strength steel KW - Aluminium TI - Improvement of a rivet geometry for the self-piercing riveting of high-strength steel and multi-material joints VL - 14 ER - TY - JOUR AU - Tinkloh, Steffen Rainer AU - Wu, Tao AU - Tröster, Thomas AU - Niendorf, Thomas ID - 15945 JF - Composite Structures SN - 0263-8223 TI - A micromechanical-based finite element simulation of process-induced residual stresses in metal-CFRP-hybrid structures VL - 238 ER - TY - JOUR AU - Martin, Sven AU - Camberg, Alan A. AU - Tröster, Thomas ID - 16859 JF - Procedia Manufacturing SN - 2351-9789 TI - Probability Distribution of Joint Point Loadings in Car Body Structures under Global Bending and Torsion ER - TY - CONF AU - Bertling, René AU - Hack, Mathias AU - Ausner, Ilja AU - Kenig, Eugeny ID - 23409 TI - CFD Simulation of Film and Rivulet Flows on Microstructured Surfaces ER - TY - CONF AU - Rozo Vasquez, Julian AU - Arian, Bahman AU - Riepold, Markus AU - Homberg, Werner AU - Trächtler, Ansgar AU - Walther, Frank ID - 22965 T2 - 54. Metallographie-Tagung TI - Microstructural investigation on phase transformation during flow forming of the metastable austenite AISI 304 ER - TY - JOUR AU - Ma, Xuekai AU - Berger, B AU - Aßmann, M AU - Driben, R AU - Meier, Torsten AU - Schneider, C AU - Höfling, S AU - Schumacher, Stefan ID - 20580 IS - 1 JF - Nature Communications SN - 2041-1723 TI - Realization of all-optical vortex switching in exciton-polariton condensates VL - 11 ER - TY - JOUR AU - Ahrens, Stephan ID - 44371 IS - Nr. 1 JF - Journal of Italian Cinema & Media Studies 9, Nr. 1 TI - Federico Fellini’s Sanctifying Effect. ER - TY - BOOK AU - Ahrens, Stephan ID - 44365 TI - Vom Klang bewegt. Das Kino und Ludwig van Beethoven. ER - TY - JOUR AU - Ahrens, Stephan ID - 44393 JF - Dschungel (jungle World) TI - Offensive Sensation. Ein Porträt von Melina Mercouri ER - TY - GEN AU - Ahrens, Stephan ID - 44395 T2 - in die tageszeitung TI - Glücklich ohne Happy End ER - TY - GEN AU - Ahrens, Stephan ID - 44396 T2 - Dschungel (Jungle World) TI - Das Stadtgespräch ER - TY - GEN AU - Ahrens, Stephan ID - 44394 TI - In memoriam Sarah Maldoror ER - TY - GEN AU - Ahrens, Stephan ID - 44402 TI - Eine andere Welt, Porträt Stéphane Brizé ER - TY - JOUR AU - Schultz, Andreas Maximilian AU - Lamers, Christoph AU - Koch, Rainer AU - Lüke, Richard AU - Sauerland, Torben ID - 22898 JF - vfdb-Zeitschrift TI - IRiS – Intelligente Rettung im SmartHome VL - 4 ER - TY - CHAP AU - Eckel, Julia ED - Beyer, Marcel ID - 44470 T2 - Exzess und Entzug: Ferres vor Gursky, Ferres vor Immendorff TI - Ferres vor/neben/mit/am … – Instagrammatikalische Präpositionen ER - TY - CHAP AU - Eckel, Julia ED - Althoff, Sebastian ED - Linseisen, Elisa ED - Müller, Maja-Lisa ED - Winter, Franziska ID - 44471 T2 - Re-/Dissolving Mimesis TI - Re/Dis-Solved Selves: (Re)Searching Selfies, (Inter)Facing the Face ER - TY - CHAP AU - Spiegel, Anna ED - Poferl, Angelika ED - Winkel, Heidemarie ID - 36726 T2 - Multiple Gender Cultures, Sociology and Plural Modernities. Re-reading Social Constructions of Gender across the Globe in a De-Colonial Perspective. TI - The Work of Entanglement. Translating Women's Rights in Malaysia ER - TY - BOOK ED - Köngeter, Stefan ED - Engel, Nicolas ED - Spiegel, Anna ED - Klemm, Matthias ED - Struve, Karen ED - Klein-Zimmer, Kathrin ED - Duscha, Annemarie ED - Chmelar, Kristina ED - Bretting, Johannes ID - 44480 SN - 3837643808 TI - Wissen in der Transnationalisierung. Zur Ubiquität und Krise der Übersetzung ER - TY - CONF AB - This paper presents the results of static short-term and long-term tensile tests for beta-nucleated joined polypropylene samples by the hot plate welding process. In the present study different dimensionless joining displacements are accounted for. The results show that high short-term tensile strength does not directly transfer to high long-term tensile strength. The morphology of the weld seam in the joined samples is examined by means of transmitted and reflected light microscopy. For the dimensionless joining displacements of 0.75 and 0.95, stretched spherulites are obtained. X-Ray diffraction can be used as a tool for qualitative and quantitative analysis and eventually for differentiation of samples of various joining displacements. AU - Wübbeke, Andrea AU - Schöppner, Volker AU - Paul, André AU - Tiemann, Michael AU - Austermeier, Laura AU - Fitze, Marcus AU - Chen, Mingie AU - Jakob, Fabian AU - Heim, Hans-Peter AU - Wu, Tao AU - Niendorf, Thomas AU - Röhricht, Marie-Luise AU - Schmidt, Michael ID - 42892 T2 - SPE ANTEC 2020: The Virtual Edition 5 TI - Long- and Short-Term Tensile Strength and Morphology of Joined Beta-Nucleated Polypropylene Parts ER - TY - CONF AU - Schöppner, Volker AU - Wübbeke, Andrea AU - Geißler, B. AU - Schmidt, M. AU - Maginer, A. AU - Wu, T. AU - Niendorf, T. AU - Jakob, F. AU - Heim, H. ID - 24245 T2 - 73rd Annual Assembly of the International Institute of Welding (IIW) TI - Investigation of residual stresses of hot plate welding ER - TY - JOUR AB - In diesem Artikel werden das Scherzugverhalten und der morphologische Zustand von konturgeschweißtem Polypropylen (PP) mit einem Massenanteil von 0,2% Ruß untersucht. Dabei zeigen die Ergebnisse ... AU - Schöppner, Volker AU - Wübbeke, Andrea AU - Schriegel, Fabian AU - Paul, Andrej AU - Tiemann, Michael AU - Geißler, Bastian AU - Schmidt, Michael AU - Magnier, Arnaud AU - Niendorf, Thomas ID - 24236 JF - Joining Plastics TI - Selected Aspects for the Assessment of Laser Transmission Welding ER - TY - CONF AU - Schöppner, Volker AU - Wübbeke, Andrea AU - Paul, A. AU - Tiemann, M. AU - Austermeier, Laura AU - Fitze, M. AU - Chen, M. AU - Jakob, F. AU - Heim, H.-P- AU - Wu, T. AU - Niendorf, T. AU - Röhricht, M.-L. AU - Schmidt, M. ID - 24472 T2 - ANTEC20 TI - LONG- AND SHORT-TERM TENSILE STRENGTH AND MORPHOLOGY OF JOINED BETA-NUCLEATED POLYPROPYLENE PARTS ER - TY - JOUR AU - Rostek, Tim AU - Wiens, Eugen AU - Homberg, Werner ID - 30713 JF - Procedia Manufacturing TI - Joining with Versatile Friction-Spun Joint Connectors VL - 47 ER - TY - CONF AB - Even though the spectrum of parts is expected to shift over the long term as a result of increasing e-mobility, there is still an extremely high demand for complex components made of high-strength materials which can only be produced by hydroforming technologies. The innovative combination of hydroforming processes with other forming processes, as well as the improvement of the processes themselves, offers considerable potential for improvement. A number of promising ways of improving the hydroforming process chain are therefore the subject of this contribution. The focus of the article is on possible approaches for combining (incremental) pre- and post-forming operations, which can permit considerable improvements in both quality and features at a reduced cost. Furthermore, a novel combination of quasi-static and high-speed forming processes is presented, leading to an improved overall forming process (with a high application potential) for the production of complex parts. AU - Wiens, Eugen AU - Djakow, Eugen AU - Homberg, Werner ID - 21447 KW - Hydroforming KW - Incremental Forming KW - Internal Flow-turning KW - High-speed Forming T2 - Nebu/Nehy 2020 TI - Some ideas for the further development of hydroforming process chains ER - TY - JOUR AB - In this paper, we study properties of the algebras of planar quasi-invariants. These algebras are Cohen–Macaulay and Gorenstein in codimension one. Using the technique of matrix problems, we classify all Cohen–Macaulay modules of rank one over them and determine their Picard groups. In terms of this classification, we describe the spectral modules of the planar rational Calogero–Moser systems. Finally, we elaborate the theory of the algebraic inverse scattering method, providing explicit computations of some ‘isospectral deformations’ of the planar rational Calogero–Moser system in the case of the split rational potential. AU - Burban, Igor AU - Zheglov, A. ID - 44331 IS - 4 JF - Proceedings of the London Mathematical Society TI - Cohen-Macaulay modules over the algebra of planar quasi-invariants and Calogero-Moser systems VL - 121 ER - TY - CHAP AU - van Ackeren, Isabell AU - Buhl, Heike M. AU - Eickelmann, Birgit AU - Heinrich, Martin AU - Wolfswinkler, Günther ED - Kaspar, Kai ED - Becker-Mrotzek, Michael ED - Hofhues, Sandra ED - König, Johannes ED - Schmeinck, Daniela ID - 28883 T2 - Bildung, Schule und Digitalisierung TI - Digitalisierung in der Lehrerbildung durch Communities of Practice. Konzeption, Governance und Qualitätsmanagement des ComeIn-Verbundvorhabens in Nordrhein-Westfalen ER - TY - CHAP AU - Labusch, Amelie AU - Eickelmann, Birgit AU - Drossel, Kerstin AU - Vennemann, Mario ED - Eickelmann, Birgit ED - Labusch, Amelie ED - Drossel, Kerstin ED - Vennemann, Mario ID - 27838 T2 - ICILS 2018 #NRW. Vertiefende Analysen und Befunde für Nordrhein-Westfalen im internationalen Vergleich TI - Digitalisierungsbezogene Berufswahlneigung und Sichtweisen von Mädchen und Jungen auf die Relevanz digitaler Medien für die Gesellschaft ER - TY - JOUR AU - Eickelmann, Birgit AU - Drossel, Kerstin ID - 28882 JF - SchulVerwaltung BW TI - Schulschließungen und Perspektiven für die Pandemie-Zeit –– Ergebnisse der Studie ‚Schule auf Distanz‘ VL - 12 ER - TY - JOUR AU - Eickelmann, Birgit AU - Kummer Wyss, Annemarie ID - 28908 IS - 4 JF - Journal für Schulentwicklung TI - Fortbildung im digitalen Zeitalter. Editorial VL - 24 ER - TY - BOOK AU - Labusch, Amelie AU - Eickelmann, Birgit AU - Conze, Daniela ID - 28905 TI - ICILS 2018 #Transfer. Gestaltung digitaler Schulentwicklung in Deutschland ER - TY - CHAP AU - Eickelmann, Birgit AU - Drossel, Kerstin AU - Labusch, Amelie AU - Heldt, Melanie ED - Eickelmann, Birgit ED - Labusch, Amelie ED - Drossel, Kerstin ED - Vennemann, Mario ID - 27839 T2 - ICILS 2018 #NRW. Vertiefende Analysen und Befunde für Nordrhein-Westfalen im internationalen Vergleich TI - Wünsche zur schulischen Nutzung digitaler Medien, digitalisierungsbezogene Berufswahlneigung und Sichtweisen von Schülerinnen und Schülern auf die Relevanz digitaler Medien für die Gesellschaft ER - TY - CHAP AU - Drossel, Kerstin AU - Lorenz, Ramona AU - Labusch, Amelie AU - Eickelmann, Birgit ED - Eickelmann, Birgit ED - Labusch, Amelie ED - Drossel, Kerstin ED - Vennemann, Mario ID - 27853 T2 - ICILS 2018 #NRW. Vertiefende Analysen und Befunde für Nordrhein-Westfalen im internationalen Vergleich TI - Selbsteingeschätzte Kompetenzen von Lehrkräften zum schulischen Einsatz digitaler Medien ER - TY - CHAP AU - Labusch, Amelie AU - Eickelmann, Birgit AU - Gerick, Julia AU - Drossel, Kerstin ED - Eickelmann, Birgit ED - Labusch, Amelie ED - Drossel, Kerstin ED - Vennemann, Mario ID - 27842 T2 - ICILS 2018 #NRW. Vertiefende Analysen und Befunde für Nordrhein-Westfalen im internationalen Vergleich TI - Kompetenzen im Bereich ‚Computational Thinking‘ von Mädchen und Jungen ER - TY - CHAP AU - Drossel, Kerstin AU - Eickelmann, Birgit ED - Eickelmann, Birgit ED - Labusch, Amelie ED - Drossel, Kerstin ED - Vennemann, Mario ID - 27849 T2 - ICILS 2018 #NRW. Vertiefende Analysen und Befunde für Nordrhein-Westfalen im internationalen Vergleich TI - Lehrkräftekooperation im Kontext des Lernens und Lehrens mit digitalen Medien ER - TY - CHAP AU - Eickelmann, Birgit AU - Drossel, Kerstin AU - Labusch, Amelie ED - Eickelmann, Birgit ED - Labusch, Amelie ED - Drossel, Kerstin ED - Vennemann, Mario ID - 27855 T2 - ICILS 2018 #NRW. Vertiefende Analysen und Befunde für Nordrhein-Westfalen im internationalen Vergleich TI - Schulischer IT-Support: Sichtweisen und Zuständigkeiten ER - TY - CHAP AU - Labusch, Amelie AU - Eickelmann, Birgit AU - Drossel, Kerstin ED - Eickelmann, Birgit ED - Labusch, Amelie ED - Drossel, Kerstin ED - Vennemann, Mario ID - 27856 T2 - ICILS 2018 #NRW. Vertiefende Analysen und Befunde für Nordrhein-Westfalen im internationalen Vergleich TI - Schulische IT-Ausstattung und Wahrnehmung der IT-Ausstattungsqualität ER - TY - CHAP AU - Conze, Daniela AU - Drossel, Kerstin AU - Eickelmann, Birgit ED - Kaspar, Kai ED - Becker-Mrotzek, Michael ED - Hofhues, Sandra ED - König, Johannes ED - Schmeinck, Daniela ID - 27862 T2 - Bildung, Schule und Digitalisierung TI - Lehrer*innenbildung in virtuellen Lernnetzwerken – Warum engagieren sich Lehrkräfte im #twitterlehrerzimmer? ER - TY - CHAP AU - Eickelmann, Birgit AU - Labusch, Amelie AU - Drossel, Kerstin AU - Vennemann, Mario ED - Eickelmann, Birgit ED - Labusch, Amelie ED - Drossel, Kerstin ED - Vennemann, Mario ID - 27857 T2 - ICILS 2018 #NRW. Vertiefende Analysen und Befunde für Nordrhein-Westfalen im internationalen Vergleich TI - Anlage der Studie ICILS 2018-NRW ER - TY - JOUR AU - Eickelmann, Birgit AU - Drossel, Kerstin ID - 27861 JF - SchulVerwaltung NRW TI - Schulschließungen und Perspektiven für die Pandemie-Zeit - Ergebnisse der Studie ‚Schule auf Distanz‘ VL - 9 ER - TY - BOOK ED - Eickelmann, Birgit ED - Labusch, Amelie ED - Drossel, Kerstin ED - Vennemann, Mario ID - 27858 TI - ICILS 2018 #NRW. Vertiefende Analysen und Befunde für Nordrhein-Westfalen im internationalen Vergleich ER - TY - JOUR AU - Rezat, Sara AU - Rezat, Sebastian ID - 33594 JF - Die Grundschulzeitschrift 320 TI - Schulbücher. Werkzeuge zum Üben in den Fächern Deutsch und Mathematik ER - TY - CHAP AU - Rezat, Sebastian ED - Meister, Dorothee ED - Ilka, Mindt ID - 44688 SN - 2512-112X T2 - Mobile Medien im Schulkontext TI - Mathematiklernen mit digitalen Schulbüchern im Spannungsfeld zwischen Individualisierung und Kooperation ER - TY - CHAP AU - Schreckenberg, Stefan ED - Chihaia, Matei ED - Henningfeld, Ursula ID - 44692 T2 - Guernica entre ícono y mito. Productividad y presencia de memorias colectivas TI - Miradas francesas sobre Gernika y Guernica ER - TY - CONF AU - Gräßler, Iris AU - Hentze, Julian AU - Hesse, Philipp ID - 23523 SN - 978-94-6384-131- T2 - Proceedings of TMCE Conference 2020 TI - Anchoring Points as a Method for Interdisciplinary Systems Engineering with the New V-Model ER - TY - JOUR AU - Gerhardts, L. AU - Kamin, A.M. AU - Meister, Dorothee M. AU - Richter, L. AU - Teichert, Jeannine ID - 44204 IS - 6 JF - PraxisForschungLehrer*innenBildung TI - Entwicklung von Selbstlern- und Medienkompetenz im Homeschooling – Chancen und konzeptionelle Anforderungen VL - 2 ER - TY - JOUR AU - Gerhardts, L. AU - Kamin, A.M. AU - Meister, Dorothee M. AU - Richter, L. AU - Teichert, Jeannine ID - 44203 IS - 2 JF - Medienimpulse TI - Lernen auf Distanz – Einblicke in den familialen Alltag des Homeschoolings und Formen der Bewältigung VL - 58 ER - TY - JOUR AU - Teichert, Jeannine ID - 44201 JF - merzWissenschaft TI - Ich habe auch Facebook-Freunde“ – Erinnerungspraktiken in vergangenen Freundschaften VL - 6 ER - TY - JOUR AU - Lu, You AU - Luo, Rong AU - Schubert, Michael AU - Steffen, Eckhard AU - Zhang, Cun-Quan ID - 13114 JF - SIAM J. Discrete Math TI - Flows on signed graphs without long barbells VL - 34 (4) ER - TY - JOUR AU - Jin, Ligang AU - Steffen, Eckhard ID - 12971 JF - J. of Combinatorics TI - Unions of 1-factors in r-graphs and overfull graphs VL - 11 ER - TY - JOUR AU - Dreßler, C. AU - Kabbe, G. AU - Brehm, Martin AU - Sebastiani, D. ID - 44995 JF - J. Chem. Phys. TI - Exploring Non-Equilibrium Molecular Dynamics of Mobile Protons in the Solid Acid CsH2PO4 on the Micrometer and Microsecond Scale VL - 152 (16) ER - TY - JOUR AU - Brehm, Martin AU - Radicke, J. AU - Pulst, M. AU - Shaabani, F. AU - Sebastiani, D. AU - Kressler, J. ID - 44997 JF - Molecules TI - Dissolving Cellulose in 1,2,3-Triazolium- and Imidazolium-Based Ionic Liquids with Aromatic Anions VL - 25 (15) ER - TY - JOUR AU - Hunold, J. AU - Eisermann, J. AU - Brehm, Martin AU - Hinderberger, D. ID - 44998 JF - J. Phys. Chem. B TI - Characterization of Aqueous Lower Polarity Solvation Shells Around Amphiphilic TEMPO Radicals in Water VL - 124 (39) ER - TY - JOUR AU - Scarbath-Evers, L. AU - Hammer, R. AU - Golze, D. AU - Brehm, Martin AU - Sebastiani, D. AU - Widdra, W. ID - 44993 JF - Nanoscale TI - From Flat to Tilted: Gradual Interfaces in Organic Thin Film Growth VL - 12 ER - TY - JOUR AU - Dreßler, C. AU - Kabbe, G. AU - Brehm, Martin AU - Sebastiani, D. ID - 44994 JF - J. Chem. Phys. TI - Dynamical Matrix Propagator Scheme for Large-Scale Proton Dynamics Simulations VL - 152 (11) ER - TY - JOUR AU - Weiß, M. AU - Brehm, Martin ID - 44999 JF - Molecules TI - Exploring Free Energy Profiles of Enantioselective Organocatalytic Aldol Reactions under Full Solvent Influence VL - 25 (24) ER - TY - JOUR AU - Brehm, Martin AU - Thomas, M. AU - Gehrke, S. AU - Kirchner, B. ID - 44996 JF - J. Chem. Phys. TI - TRAVIS – A Free Analyzer for Trajectories from Molecular Simulation VL - 152 (16) ER - TY - JOUR AU - Ditter, Jan AU - Aubel, Tobias AU - Meschut, Gerson ID - 45072 IS - 1 JF - adhesion ADHESIVES + SEALANTS KW - Polymers and Plastics KW - General Chemical Engineering KW - General Chemistry SN - 2192-2624 TI - Simple Determination of Fast Curing Parameters for Bonded Structures VL - 17 ER - TY - JOUR AU - Ditter, Jan AU - Meschut, Gerson AU - Wibbeke, Tim Michael ID - 45077 IS - 3 JF - adhesion ADHESIVES + SEALANTS KW - Polymers and Plastics KW - General Chemical Engineering KW - General Chemistry SN - 2192-2624 TI - Joining and Disjoining Concepts for Adhesive Bonded Lightweight Structures VL - 16 ER - TY - JOUR AU - Haines, Mackenzie AU - Murray, Amanda M. AU - Glaviano, Neal R. AU - Gokeler, Alli AU - Norte, Grant E. ID - 45125 JF - Human Movement Science KW - Experimental and Cognitive Psychology KW - Orthopedics and Sports Medicine KW - General Medicine KW - Biophysics SN - 0167-9457 TI - Restricting ankle dorsiflexion does not mitigate the benefits of external focus of attention on landing biomechanics in healthy females VL - 74 ER - TY - JOUR AB - Abstract Purpose It has been reported that there is no correlation between anterior tibia translation (ATT) in passive and dynamic situations. Passive ATT (ATTp) may be different to dynamic ATT (ATTd) due to muscle activation patterns. This study aimed to investigate whether muscle activation during jumping can control ATT in healthy participants. Methods ATTp of twenty-one healthy participants was measured using a KT-1000 arthrometer. All participants performed single leg hops for distance during which ATTd, knee flexion angles and knee flexion moments were measured using a 3D motion capture system. During both tests, sEMG signals were recorded. Results A negative correlation was found between ATTp and the maximal ATTd (r = − 0.47, p = 0.028). An N-Way ANOVA showed that larger semitendinosus activity was seen when ATTd was larger, while less biceps femoris activity and rectus femoris activity were seen. Moreover, larger knee extension moment, knee flexion angle and ground reaction force in the anterior-posterior direction were seen when ATTd was larger. Conclusion Participants with more ATTp showed smaller ATTd during jump landing. Muscle activation did not contribute to reduce ATTd during impact of a jump-landing at the observed knee angles. However, subjects with large ATTp landed with less knee flexion and consequently showed less ATTd. The results of this study give information on how healthy people control knee laxity during jump-landing. Level of evidence III AU - Keizer, Michèle N. J. AU - Hijmans, Juha M. AU - Gokeler, Alli AU - Benjaminse, Anne AU - Otten, Egbert ID - 45126 IS - 1 JF - Journal of Experimental Orthopaedics KW - Orthopedics and Sports Medicine SN - 2197-1153 TI - Healthy subjects with lax knees use less knee flexion rather than muscle control to limit anterior tibia translation during landing VL - 7 ER - TY - JOUR AB - Abstract Purpose An increased posterior tibia plateau angle is associated with increased risk for anterior cruciate ligament injury and re-rupture after reconstruction. The aims of this study were to determine whether the tibia plateau angle correlates with dynamic anterior tibia translation (ATT) after an anterior cruciate ligament reconstruction and whether the tibia plateau angle correlates with aspects of knee kinematics and kinetics during jump landing. Methods Thirty-seven patients after anterior cruciate ligament reconstruction with autograft hamstring tendon were included. Knee flexion angle and knee extension moment during single leg hops for distance were determined using a motion capture system and the dynamic ATT with its embedded method. The medial and lateral posterior tibia plateau angle were measured using MRI. Moreover, passive ATT was measured using the KT-1000 arthrometer. Results A weak negative correlation was found between the maximal dynamic ATT and the medial tibia plateau angle (p = 0.028, r = − 0.36) and between the maximal knee flexion angle and the lateral tibia plateau angle (p = 0.025, r = − 0.37) during landing. Patients with a smaller lateral tibia plateau angle show larger maximal knee flexion angle during landing than the patients with larger lateral tibia plateau angle. Also, the lateral tibia plateau angle is associated the amount of with muscle activity. Conclusion The posterior medical tibia plateau angle is associated with dynamic ATT. The maximal knee flexion angle and muscle activity are associated with the posterior lateral tibia plateau angle. Level of evidence III AU - Keizer, Michèle N. J. AU - Hijmans, Juha M. AU - Gokeler, Alli AU - Otten, Egbert AU - Brouwer, Reinoud W. ID - 45127 IS - 1 JF - Journal of Experimental Orthopaedics KW - Orthopedics and Sports Medicine SN - 2197-1153 TI - Sagittal knee kinematics in relation with the posterior tibia slope during jump landing after an anterior cruciate ligament reconstruction VL - 7 ER - TY - JOUR AU - Letafatkar, Amir AU - Rabiei, Pouya AU - Ghanati, Hadi Abbaszadeh AU - Khosrokiani, Zohre AU - Ghahremani, Naji AU - Gokeler, Alli ID - 45128 IS - 4 JF - Sport Sciences for Health KW - Orthopedics and Sports Medicine SN - 1824-7490 TI - Training athletes with an external attentional focus enhances athletic performance during countermovement jump VL - 16 ER - TY - GEN AU - N., N. ID - 42307 TI - Weitsichtigkeit zur Bildung stabiler Koalitionen - eine spieltheoretische Analyse ER -