TY - CHAP AU - Eke, Norbert Otto ED - Gather, Katharina ID - 19101 T2 - Zwischen Emanzipation und Sozialdisziplinierung: Pädagogik im Vormärz TI - Habitueller Antiklassizismus. Christian Dietrich Grabbe und die Kritik an Klassik und Romantik im Vormärz ER - TY - JOUR AU - Vascellari, A AU - Grassi, A AU - Canata, GL AU - Zaffagnini, S AU - Gokeler, A AU - Jones, H ID - 20414 JF - Knee Surg Sports Traumatol Arthrosc SN - 0942-2056 TI - Hamstrings substitution via anteromedial portal with optional anterolateral ligament reconstruction is the preferred surgical technique for anterior cruciate ligament reconstruction: a survey among ESSKA members. ER - TY - BOOK ED - Albus, Vanessa ED - Schalk, Helge ID - 50636 TI - Handbuch Medien im Philosophie- und Ethikunterricht ER - TY - GEN AU - Peckhaus, Volker ID - 18996 T2 - Mathematical Reviews TI - Hanke, Miroslav, “The Probabilistic Logic of Eusebius Amort (1692–1775)”, In: Early Science and Medicine 24 (2019), 186–211 ER - TY - JOUR AU - Ehland, Christoph ID - 35505 IS - 3 JF - Critical Survey TI - Happiness Against All Odds: Incestuous Desires in John Ford’s ’Tis Pity She’s a Whore VL - 32 ER - TY - JOUR AB -

We investigate the structure-activity correlations of methanation catalysts obtained by thermal decomposition of a Ni-based metal-organic framework, using pair distribution function, X-ray absorption spectroscopy and X-ray diffraction.

AU - Prinz, Nils AU - Schwensow, Leif AU - Strübbe, Sven AU - Jentys, Andreas AU - Bauer, Matthias AU - Kleist, Wolfgang AU - Zobel, Mirijam ID - 41025 IS - 29 JF - Nanoscale KW - General Materials Science SN - 2040-3364 TI - Hard X-ray-based techniques for structural investigations of CO2 methanation catalysts prepared by MOF decomposition VL - 12 ER - TY - CONF AB - Historically, the field of financial forecasting almost exclusively relied on so-called hard information – i.e., numerical data with well-defined and unambiguous meaning. Over the last few decades, however, researchers and practitioners alike have, following the advances in natural language understanding, started recognizing the benefits of integrating soft information into financial modelling. In line with the above, this paper examines whether contemporary attention-based sequence-to-sequence models, known as Transformers, can help improve stock return volatility prediction when applied to corporate annual reports. Using a publicly available benchmark dataset, we show, in an empirical analysis, that out-of-the-box Transformer models have the ability to outmatch current state-of-the-art results and, more importantly, that our proposed feature-based Transformer approach can outperform a robust numerical baseline. To the best of our knowledge, this is the first empirical study focusing on stock return volatility prediction (1) to ever experiment with state-of-the-art Transformer architectures and (2) to demonstrate that a model based solely on soft information can surpass its numerical counterpart. Furthermore, we show that by including an additional numerical feature into our best text-only model, we can push the performance of our model even further, suggesting that soft and hard information contain different predictive signals. AU - Caron, Matthew AU - Müller, Oliver ID - 21563 T2 - 2020 IEEE International Conference on Big Data (Big Data) TI - Hardening Soft Information: A Transformer-Based Approach to Forecasting Stock Return Volatility ER - TY - BOOK ED - Egidi, Margreth ED - Greulich, Markus ED - Winter, Marie-Sophie ID - 31515 TI - Hartmann von Aue 1230–1517. Kulturgeschichtliche Perspektiven der handschriftlichen Überlieferung ER - TY - GEN AU - Budde, Kirsten AU - Barela, José A AU - Weigelt, Matthias ED - Amesberger, Günter ED - Würth, Sabine ED - Finkenzeller, Thomas ID - 48038 T2 - Abstractband der 52. Jahrestagung der Arbeitsgemeinschaft für Sportpsychologie (asp) TI - Hat die Körperposition (sitzen vs. stehen) einen Einfluss auf die Leistung in einer Mentalen Rotationsaufgabe? ER - TY - JOUR AU - Güldenpenning, Iris AU - Kunde, Wilfried AU - Weigelt, Matthias ID - 37760 IS - 1 JF - International Journal of Sport and Exercise Psychology KW - Applied Psychology KW - Social Psychology SN - 1612-197X TI - Head-fake perception in basketball: the relative contributions of expertise, visual or motor training, and test repetition VL - 20 ER - TY - JOUR AB - Summary As health concepts develop through exposure to, and experience with particular contexts, and as health concepts influence health behaviour, it is important for actors in health promotion programmes to understand an individual’s health concepts. This study focussed on health concepts among socially disadvantaged children in France, Germany, Italy and Switzerland—a hitherto less researched population group. We conducted focus groups with a total of 167 children aged 7–11 years (mean=8.76 years, SD=0.68). The aim of this study was to explore if the life situation across four different countries leads to similar health concepts, and how the particular, national health discourses are reflected in the children’s health concepts. The data were analysed through a structured qualitative content analysis and revealed four categories: ‘Symbols/symptoms of health/illness’, ‘Emotionality’, ‘Healthy/unhealthy practices’, and ‘Consequences of health problems’. The children’s health concepts are linked to concrete events and objects, and they are able to think in logical sequences. However, the children’s causal argumentation is uni-dimensional; they do not cover the complexity of the development of health problems. In particular, overweight stands for illness and is exclusively the result of unhealthy practices. In their concepts, the children reflect the national health promotion programme discourses about overweight. They seem to understand the messages of health education as ‘behaving well means being healthy’; however, such a health education message initiates accusations of ‘unhealthy persons’. In consequence, challenges for sensitive health education programmes (at school) are discussed. AU - Grimminger-Seidensticker, Elke AU - Aceti, Monica AU - Knobé, Sandrine AU - Vieille Marchiset, Gilles ID - 28343 JF - Health Promotion International SN - 0957-4824 TI - Health concepts among socially disadvantaged children in France, Germany and Switzerland VL - 35 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 - GEN AU - Keizer, MNJ AU - Hijmans, JM AU - Gokeler, A AU - Benjaminse, A AU - Otten, E ID - 20416 IS - 1 SN - 2197-1153 T2 - J Exp Orthop 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 - CONF AU - Benz, Manuel AU - Krogh Kristensen, Erik AU - Luo, Linghui AU - P. Borges Jr., Nataniel AU - Bodden, Eric AU - Zeller, Andreas ID - 20510 T2 - International Conference for Software Engineering (ICSE) TI - Heaps'n Leaks: How Heap Snapshots Improve Android Taint Analysis ER - TY - CONF AB - Heat dissipation is a limiting factor in the performance of many power electronic components. Especially in the TO-263-7 package, which is used for several SiC-MOSFETs, the heat transfer must take place through the cross section of the printed circuit board (PCB) to the heatsink at the bottom side. Most commonly, thermal vias are used to form this path in a perpendicular direction through all PCB-layers. In a given soft- and hard switched example applications with the use of C3M0065090J SiC-MOSFETs, this conventional approach limited the component’s maximum heat dissipation to approx. 13 W. A recent alternative approach are massive copper blocks (”pedestals”) being integrated in PCBs and reaching from their top- to the bottom-side in relevant footprint areas under SMD-housed power semiconductors. Pedestals allowing to increase the heat dissipation in the given case to even 36 W. This step is achieved due to the clearly superior heat spreading capability of that massive thermal connection between SiC-MOSFET and heatsink. For the hard switched example application the number of switch-elements can be halved to one, by using the pedestal instead of thermal vias. Independently of optimizing the heat transfer path, the up-front avoidance of losses helps to stay within existing heat dissipation limits, of course. The dominant conduction losses of the mentioned soft-switched example application could be halved by changing to SiC-MOSFET types with significant lowered RDSon. By using pedestals and changing to SiC-MOSFETs with lowered RDSon, the number of switch-elements can also be halved for the soft switched application. AU - Strothmann, Benjamin AU - Piepenbrock, Till AU - Schafmeister, Frank AU - Böcker, Joachim ID - 30001 T2 - PCIM Europe digital days 2020; International Exhibition and Conference for Power Electronics, Intelligent Motion, Renewable Energy and Energy Management TI - Heat dissipation strategies for silicon carbide power SMDs and their use in different applications ER - TY - JOUR AB - Heat pumps are the key technology to decarbonise thermal processes by upgrading industrial surplus heat using renewable electricity. Existing insight-based integration methods refer to the idealised Grand Composite Curve requiring the full exploitation of heat recovery potential but leave the question of how to deal with technical or economic limitations unanswered. In this work, a novel Heat Pump Bridge Analysis (HPBA) is introduced for practically targeting technical and economic heat pump potential by applying Coefficient of Performance curves into the Modified Energy Transfer Diagram (METD). Removing cross-Pinch violations and operating heat exchangers at minimum approach temperatures by combined application of Bridge Analysis increases the heat recovery rate and reduce the temperature lift to be pumped at the same time. The insight-based METD allows the individual matching of heat surpluses and deficits of individual streams with the capabilities and performance of different market-available heat pump concepts. For an illustrative example, the presented modifications based on HPBA increase the economically viable share of the technical heat pump potential from 61% to 79%. AU - Schlosser, Florian AU - Wiebe, Heinrich AU - Walmsley, Timothy G. AU - Atkins, Martin J. AU - Walmsley, Michael R. W. AU - Hesselbach, Jens ID - 24630 JF - Energies SN - 1996-1073 TI - Heat Pump Bridge Analysis Using the Modified Energy Transfer Diagram ER - TY - JOUR AU - Lammer, Christina AU - Scharlau, Ingrid ID - 30958 JF - Paderborner Universitätszeitschrift TI - Herausforderungen für die Chancengleichheit. Online-Mentoring für Studentinnen der Universität Paderborn ER - TY - JOUR AU - Albers, Timm AU - Weltzien, Dörte AU - Ali-Tani, Caroline AU - Döther, Sabrina AU - Söhnen, Sarah Aileen AU - Verhoeven, Nadja ID - 32043 IS - 3 JF - QfI - Qualifizierung für Inklusion. Online-Zeitschrift zur Forschung über Aus-, Fort- und Weiterbildung pädagogischer Fachkräfte TI - Herausforderungen inklusiver Bildung in Kita-Teams – Konzipierung eines individualisierten Curriculums für Weiterbildung und Prozessbegleitung VL - 2 ER - TY - BOOK AU - Westphal, Petra ID - 29333 TI - Herausforderungen studentischen Peer-Mentorings. Eine Situationsanalyse vor dem Hintergrund universitärer Arenen ER - TY - CONF AU - Senkbeil, M. AU - Schwippert, K. AU - Drossel, Kerstin AU - Vennemann, M. ID - 52522 T2 - Vortrag im Rahmen des Symposiums ‚Computer- und informationsbezogene Kompetenzen von Schülerinnen und Schülern im zweiten internationalen Vergleich und Kompetenzen im Bereich ‚Computational Thinking‘ - Befunde der IEA-Studie ICILS 2018 – Teil 1‘ (OrganisatorInnen: Birgit Eickelmann, Wilfried Bos, Julia Gerick & Amelie Labusch, Diskutant: Johannes Naumann) auf der 8. Tagung der Gesellschaft für Empirische Bildungsforschung (GEBF). Universität Potsdam TI - Herkunftsbedingte Unterschiede in den computer- und informationsbezogenen Kompetenzen von Schülerinnen und Schülern in ICILS 2018 und Ansatzpunkte zur Ermöglichung von Partizipation(angenommen, Konferenz abgesagt) ER - TY - GEN ED - Eke, Norbert Otto ID - 23853 T2 - edition text + kritik TI - Herta Müller. Text + Kritik 155/2020. 2. Auflage: Neufassung. Hg. von Norbert Otto Eke und Christof Hamann. ER - TY - JOUR AU - Tanim, Tanvir R. AU - Paul, Partha P. AU - Thampy, Vivek AU - Cao, Chuntian AU - Steinrück, Hans-Georg AU - Nelson Weker, Johanna AU - Toney, Michael F. AU - Dufek, Eric J. AU - Evans, Michael C. AU - Jansen, Andrew N. AU - Polzin, Bryant J. AU - Dunlop, Alison R. AU - Trask, Stephen E. ID - 23602 JF - Cell Reports Physical Science SN - 2666-3864 TI - Heterogeneous Behavior of Lithium Plating during Extreme Fast Charging VL - 1 ER - TY - JOUR AB - AbstractFluoride ion batteries (FIBs) are a recent alternative all-solid-state battery technology. However, the FIB systems proposed so far suffer from poor cycling performance. In this work, we report La2NiO4.13 with a Ruddlesden-Popper type structure as an intercalation-based active cathode material in all solid-state FIB with excellent cycling performance. The critical charging conditions to maintain the conductivity of the cell were determined, which seems to be a major obstacle towards improving the cycling stability of FIBs. For optimized operating conditions, a cycle life of about 60 cycles and over 220 cycles for critical cut-off capacities of 50 mAh/g and 30 mAh/g, respectively, could be achieved, with average Coulombic efficiencies between 95 – 99%. Cycling of the cell is a result of fluorination/de-fluorination into and from the La2NiO4+d cathode, and it is revealed that La2NiO4.13 is a multivalent electrode material. Our findings suggest that La2NiO4.13 is a promising high energy cathode for FIBs. AU - Nowroozi, Mohammad Ali AU - Wissel, Kerstin AU - Donzelli, Manuel AU - Hosseinpourkahvaz, Niloofar AU - Plana-Ruiz, Sergi AU - Kolb, Ute AU - Schoch, Roland AU - Bauer, Matthias AU - Malik, Ali Muhammad AU - Rohrer, Jochen AU - Ivlev, Sergei AU - Kraus, Florian AU - Clemens, Oliver ID - 41027 IS - 1 JF - Communications Materials KW - Mechanics of Materials KW - General Materials Science SN - 2662-4443 TI - High cycle life all-solid-state fluoride ion battery with La2NiO4+d high voltage cathode VL - 1 ER - TY - JOUR AU - Schryen, Guido AU - Kliewer, Natalia AU - Fink, Andreas ID - 14985 IS - 1 JF - Business & Information Systems Engineering TI - High Performance Business Computing VL - 62 ER - TY - JOUR AU - Zhao, Jie AU - Ma, Chaoxuan AU - Rüsing, Michael AU - Mookherjea, Shayan ID - 47952 IS - 16 JF - Physical Review Letters KW - General Physics and Astronomy SN - 0031-9007 TI - High Quality Entangled Photon Pair Generation in Periodically Poled Thin-Film Lithium Niobate Waveguides VL - 124 ER - TY - CONF AU - Sharma, Arnab AU - Wehrheim, Heike ID - 16724 T2 - Proceedings of the ACM SIGSOFT International Symposium on Software Testing and Analysis (ISSTA). TI - Higher Income, Larger Loan? Monotonicity Testing of Machine Learning Models ER - TY - JOUR AU - Akrivis, Georgios AU - Feischl, Michael AU - Kovács, Balázs AU - Lubich, Christian ID - 45955 IS - 329 JF - Mathematics of Computation KW - Applied Mathematics KW - Computational Mathematics KW - Algebra and Number Theory SN - 0025-5718 TI - Higher-order linearly implicit full discretization of the Landau–Lifshitz–Gilbert equation VL - 90 ER - TY - CHAP AU - Schroeter-Wittke, Harald AU - Flath, Beate AU - König, Bernhard AU - Venus, Viktoria ED - Helmke, Julia ED - Rentsch, Stefanie ID - 41076 SN - 9783579082134 T2 - Deutscher Evangelischer Kirchentag Dortmund 2019. Dokumente TI - Hiob und das Leiden: Vertrauensfrage - Hiob 2,7-13. Bibelarbeit auf dem Weg am Donnerstag, 20. Juni 2019 ER - TY - BOOK AU - Günther, Katrin ID - 31572 TI - Historisches Vergleichen: Vergleichsaufgaben in Lehrwerken des Gesellschaftslehre- und Geschichtsunterrichts der Sekundarstufe II. Eine Untersuchung von (Schüler*innen-)Lösungen zu einer Vergleichsaufgabe am Beispiel eines Darstellungstextes zur Industriellen Revolution, Bd. 7: Geschichtsdidaktische Studien ER - TY - JOUR AU - Röder, Michael AU - Kuchelev, Denis AU - Ngonga Ngomo, Axel-Cyrille ID - 25326 IS - 1 JF - Data Sci. TI - HOBBIT: A platform for benchmarking Big Linked Data VL - 3 ER - TY - CHAP AU - Biehler, Rolf AU - Kempen, Leander AU - Paravicini, Walther ED - Siller, H.-S. ED - Weigel, W. ED - Wörler, J. F. ID - 35819 T2 - Beiträge zum Mathematikunterricht 2020 TI - Hochschuldidaktik Mathematik: Fachbezogenes Design und empirische Studien ER - TY - GEN AU - Topalović, Elvira AU - Uhl, Benjamin ID - 40924 TI - Hören – Sprechen – Lesen – Schreiben. Basale Sprachfähigkeiten. ER - TY - GEN AU - Topalović, Elvira AU - Uhl, Benjamin ID - 40923 TI - Hören – Sprechen – Lesen – Schreiben. Basale Sprachfähigkeiten. ER - TY - CONF AU - Albrecht, Mirko AU - Bialaschik, Max AU - Gehde, Michael AU - Schöppner, Volker ID - 23873 TI - Hot gas welding – Influences of the tool design ER - TY - CONF AU - Franzen, Katja AU - Hellmich, Frank ID - 36211 TI - How can primary school teachers’ self-efficacy beliefs in inclusive education be explained? Single Paper. ECER 2020 (European Conference on Educational Research). “Educational Research (Re)connecting Communities” ER - TY - GEN AB - We analyze the impact of trust on bargaining behavior between auditor and auditee in a tax setting. We study the effect of interpersonal trust and trust in government on both taxpayer and tax auditor. In an experiment with variation in pairwise trust settings, we find evidence that both kinds of trust affect the bargaining behavior, albeit in different ways. While trust in government increases taxpayers’ tax offers, interpersonal trust may lead to more concessionary behavior of tax auditors moderated by trust in government. Our findings help tax authorities to shape programs to enhance compliance in an atmosphere of trust. AU - Eberhartinger, Eva AU - Speitmann, Raffael AU - Sureth-Sloane, Caren ID - 21410 TI - How Does Trust Affect Concessionary Behavior in Tax Bargaining? VL - No. 41 ER - TY - JOUR AU - Sievers, Sönke AU - Degen, Dominik AU - Kim, Daniel AU - Kengelbach, Jens ID - 20866 JF - M&A Review Europe TI - How Private Equity can leverage downturn M&A for value creation ER - TY - JOUR AU - Svartdal, Frode AU - Dahl, Tove I. AU - Gamst-Klaussen, Thor AU - Koppenborg, Markus AU - Klingsieck, Katrin B. ID - 29110 JF - Frontiers in Psychology SN - 1664-1078 TI - How Study Environments Foster Academic Procrastination: Overview and Recommendations ER - TY - CONF AU - Purrmann, Maren AU - Wünderlich, Nancy ID - 16116 T2 - Proceedings of the 2020 AMA Winter Academic Conference TI - How to Build Trust on Peer-to-Peer Platforms: An Investigation of the Antecedents of Peer and Platform Trust ER - TY - JOUR AU - Blömer, Johannes AU - Brauer, Sascha AU - Bujna, Kathrin AU - Kuntze, Daniel ID - 10790 JF - Advances in Data Analysis and Classification SN - 1862-5347 TI - How well do SEM algorithms imitate EM algorithms? A non-asymptotic analysis for mixture models VL - 14 ER - TY - JOUR AU - Weber, Jutta ID - 36261 IS - 2/3 JF - Das Argument TI - Human-Machine Learning und Digital Commons. K/Ein Manifest VL - 335, 62. Jg. / Heft 2/3 ER - TY - JOUR AB - Large Co-MOF-74 crystals of a few hundred micrometers were prepared by solvothermal synthesis, and their structure and morphology were characterized by scanning electron microscopy (SEM), IR, and Raman spectroscopy. The hydrothermal stability of the material up to 60 °C at 93% relative humidity was verified by temperature-dependent XRD. Proton conductivity was studied by impedance spectroscopy, using a single crystal. By varying the relative humidity (70–95%), temperature (21–60 °C), and orientation of the crystal relative to the electrical potential, it was found that proton conduction occurs predominantly through the linear, unidirectional (1D) micropore channels of Co-MOF-74, and that water molecules inside the channels are responsible for the proton mobility by a Grotthuss-type mechanism. AU - Javed, Ali AU - Strauss, Ina AU - Bunzen, Hana AU - Caro, Jürgen AU - Tiemann, Michael ID - 25899 JF - Nanomaterials SN - 2079-4991 TI - Humidity-Mediated Anisotropic Proton Conductivity through the 1D Channels of Co-MOF-74 ER - TY - CHAP AU - Schulze, Max ED - Gliem, Vera ED - Strsembski, Stephan ID - 48963 KW - Editionen KW - Kunst KW - Fotografie KW - Siebdruck KW - Farbattentat T2 - Provinz Editionen 2011-2020 TI - Hunger (Eduardo Chillida) und Swingcolor ER - TY - JOUR AU - Rudic, Biljana AU - Hubner-Benz, Sylvia AU - Baum, Matthias ID - 48521 JF - Journal of Business Venturing Insights KW - Management of Technology and Innovation KW - Business and International Management SN - 2352-6734 TI - Hustlers, hipsters and hackers: Potential employees’ stereotypes of entrepreneurial leaders VL - 15 ER - TY - JOUR AB - A dielectric step-index optical fiber with tube-like profile is considered, being positioned with a small gap on top of a dielectric slab waveguide. We propose a 2.5-D hybrid analytical/numerical coupled mode model for the evanescent excitation of the tube through semi-guided waves propagating in the slab at oblique angles. The model combines the directional polarized modes supported by the slab with analytic solutions for the TE-, TM-, and orbital-angular-momentum (OAM) modes of the tube-shaped fiber. Implementational details of the scheme are discussed, complemented by finite-element simulations for verification purposes. Our results include configurations with resonant in-fiber excitation of OAM modes with large orbital angular momentum and strong field enhancement. AU - Hammer, Manfred AU - Ebers, Lena AU - Förstner, Jens ID - 20189 JF - Optical and Quantum Electronics KW - tet_topic_waveguides SN - 0306-8919 TI - Hybrid coupled mode modelling of the evanescent excitation of a dielectric tube by semi-guided waves at oblique angles VL - 52 ER - TY - JOUR AU - Eckhoff, Marco AU - Blöchl, Peter E. AU - Behler, Jörg ID - 19503 JF - Physical Review B KW - pc2-ressources SN - 2469-9950 TI - Hybrid density functional theory benchmark study on lithium manganese oxides ER - TY - CONF AU - Hanselle, Jonas Manuel AU - Tornede, Alexander AU - Wever, Marcel Dominik AU - Hüllermeier, Eyke ID - 17408 T2 - KI 2020: Advances in Artificial Intelligence TI - Hybrid Ranking and Regression for Algorithm Selection ER - TY - CHAP AU - Sellmann, Meinolf AU - Tierney, Kevin ID - 19561 KW - pc2-ressources SN - 0302-9743 T2 - Lecture Notes in Computer Science TI - Hyper-parameterized Dialectic Search for Non-linear Box-Constrained Optimization with Heterogenous Variable Types ER - TY - CONF AB - The continuous innovation of its business models is an important task for a company to stay competitive. During this process, the company has to validate various hypotheses about its business models by adapting to uncertain and changing customer needs effectively and efficiently. This adaptation, in turn, can be supported by the concept of Software Product Lines (SPLs). SPLs reduce the time to market by deriving products for customers with changing requirements using a common set of features, structured as a feature model. Analogously, we support the process of business model adaptation by applying the engineering process of SPLs to the structure of the Business Model Canvas (BMC). We call this concept a Business Model Decision Line (BMDL). The BMDL matches business domain knowledge in the form of a feature model with customer needs to derive hypotheses about the business model together with experiments for validation. Our approach is effective by providing a comprehensive overview of possible business model adaptations and efficient by reusing experiments for different hypotheses. We implement our approach in a tool and illustrate the usefulness with an example of developing business models for a mobile application. AU - Gottschalk, Sebastian AU - Rittmeier, Florian AU - Engels, Gregor ID - 16933 KW - Business Model Decision Line KW - Business Model Adaptation KW - Hypothesis-driven Adaptation KW - Software Product Line KW - Feature Model T2 - Proceedings of the 22nd IEEE International Conference on Business Informatics TI - Hypothesis-driven Adaptation of Business Models based on Product Line Engineering ER - TY - JOUR AU - M. Zahera, Hamada AU - Jalota, Rricha AU - Ahmed Sherif, Mohamed AU - Ngonga Ngomo, Axel-Cyrille ID - 25356 JF - CoRR TI - I-AID: Identifying Actionable Information from Disaster-related Tweets VL - abs/2008.13544 ER - TY - JOUR AU - Teichert, Jeannine ID - 44201 JF - merzWissenschaft TI - Ich habe auch Facebook-Freunde“ – Erinnerungspraktiken in vergangenen Freundschaften VL - 6 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 - BOOK AU - Labusch, Amelie AU - Eickelmann, Birgit AU - Conze, Daniela ID - 28905 TI - ICILS 2018 #Transfer. Gestaltung digitaler Schulentwicklung in Deutschland ER - TY - JOUR AU - Eickelmann, Birgit ID - 28840 JF - Friedrich Jahresheft #schuleDIGITAL TI - ICILS 2018 – Wo steht Deutschland im internationalen Vergleich? VL - 38 ER - TY - CONF AU - Eickelmann, Birgit ID - 51992 T2 - Vortrag im Rahmen der Sitzung des wissenschaftlichen Beirats ‚Bildung und Begabung‘. Bonn TI - ICILS 2018#Deutschland. Computer- und informationsbezogene Kompetenzen von Schülerinnen und Schülern im zweiten internationalen Vergleich und Kompetenzen im Bereich Computational Thinking ER - TY - JOUR AU - Eickelmann, Birgit AU - Labusch, Amelie ID - 28847 IS - 5 JF - SchulVerwaltung NRW. Fachzeitschrift für Schulentwicklung und Schulmanagement TI - ICILS 2018-NRW. Zentrale Ergebnisse und Perspektiven für die Entwicklung schulischer Digitalisierungsprozesse in Nordrhein-Westfalen VL - 31 ER - TY - DATA AU - Teidla-Kunitsõn, Gertha ID - 27873 TI - ICT usage across Europe: A literature review and an overview of existing data ER - TY - DATA AU - Ayllón, Sara AU - Barbovschi, Monica AU - Casamassima, Gianna AU - Drossel, Kerstin AU - Eickelmann, Birgit AU - Ghețău, Cosmin AU - Haragus, Teo Paul AU - Holmarsdottir, Halla Bjork AU - Hyggen, Christer AU - Kapella, Olaf AU - Karatzogianni, Athina AU - Lado, Samuel AU - Levine, Diane AU - Lorenz, Theresa AU - Mifsud, Louise AU - Parsanoglou, Dimitris AU - Port, Sonja AU - Sisask, Merike AU - Symeonaki, Maria AU - Teidla-Kunitsõn, Gertha ID - 27868 TI - ICT usage across Europe: A literature review and an overview of existing data ER - TY - CONF AU - Wortmann, Fabio AU - Ellermann, Kai AU - Kühn, Arno AU - Dumitrescu, Roman ID - 21386 IS - 91 T2 - Procedia CIRP TI - Ideation for digital platforms based on a companies‘ ecosystem ER - TY - CONF AU - Henkenjohann, Mark AU - Joppen, Robert AU - Köchling, Daniel AU - von Enzberg, Sebastian AU - Kühn, Arno AU - Dumitrescu, Roman ID - 21392 T2 - Procedia CIRP TI - Identification and specification of standard modules in production for a material flow simulation ER - TY - CONF AU - Schnasse, Felix AU - Menzefricke, Jörn Steffen AU - Gabriel, Stefan AU - Hobscheidt, Daniela AU - Parlings, Matthias AU - Kühn, Arno AU - Dumitrescu, Roman ID - 20307 T2 - Proceedings of the Hamburg International Conference of Logistics (HICL) TI - Identification of socio-technical changes caused by Industry 4.0 VL - 29 ER - TY - JOUR AU - Albus, Vanessa AU - Petermann, Hans-Bernhard ID - 50694 JF - ZDPE TI - Im Interview mit…. VL - 3 ER - TY - JOUR AB - Let D<0 be a fundamental discriminant and denote by E(D) the exponent of the ideal class group Cl(D) of K=ℚ(√D). Under the assumption that no Siegel zeros exist we compute all such D with E(D) dividing 8. We compute all D with |D| ≤ 3.1⋅10²⁰ such that E(D) ≤ 8. AU - Elsenhans, Andreas-Stephan AU - Klüners, Jürgen AU - Nicolae, Florin ID - 34842 IS - 3 JF - Acta Arithmetica KW - Algebra and Number Theory SN - 0065-1036 TI - Imaginary quadratic number fields with class groups of small exponent VL - 193 ER - TY - BOOK AB - Durch seine immanente Kritik soziologischer Theorie reflektiert Christoph Haker Theorie als Praxis. Sein hierfür entwickelter heuristischer Bezugsrahmen ist die soziologische Differenz, in der sich die Theorien von ihrem Anderen - d.h. erstens von der Gesellschaft, zweitens von anderen Theorien und drittens reflexiv von sich selbst - unterscheiden. Das Ziel der Kritik ist ein praktischer Umgang mit der Multiparadigmatizität der Soziologie und die Öffnung ihrer Kontingenz: Theorien sollen auf diesem Weg ihre Geschlossenheit verlieren und ihre Selbstverständlichkeit einbüßen. AU - Haker, Christoph ID - 51257 SN - 2703-1276 TI - Immanente Kritik soziologischer Theorie ER - TY - JOUR AU - Schmidt, Rebekka ID - 49996 JF - #schuleDIGITAL. Friedrich Jahresheft XXXVIII TI - Immer alles digital? Digitale Medien als Potenzial und Aufgabe für den Kunstunterricht ER - TY - JOUR AB - AbstractThe value of models is well recognised in product and systems engineering. Modelling languages and diagrams are used to capture mental models and to handle model complexity. Literature research indicates that there are only very few approaches to utilise the potential of virtual and augmented reality for supporting tasks in model based (systems) engineering. The paper at hand contributes a new morphology of intuitive interaction for Immersive Abstraction as a holistic approach to extend that coverage. It presents a holistic framework to categorise solutions and future research directions. AU - Gräßler, Iris AU - Pottebaum, Jens ID - 23468 JF - Proceedings of the Design Society: DESIGN Conference; 26. - 29. Okt. 2020 SN - 2633-7762 TI - Immersive Abstraction: A new Morphology of Intuitive Interaction with System Models VL - Band 1 ER - TY - JOUR AU - Streiter, Martin AU - Fischer, Tillmann G. AU - Wiebeler, Christian AU - Reichert, Sebastian AU - Langenickel, Jörn AU - Zeitler, Kirsten AU - Deibel, Carsten ID - 20496 JF - The Journal of Physical Chemistry C KW - pc2-ressources SN - 1932-7447 TI - Impact of Chlorine on the Internal Transition Rates and Excited States of the Thermally Delayed Activated Fluorescence Molecule 3CzClIPN ER - TY - JOUR AU - Abdelsamie, Maged AU - Xu, Junwei AU - Bruening, Karsten AU - Tassone, Christopher J. AU - Steinrück, Hans-Georg AU - Toney, Michael F. ID - 23601 JF - Advanced Functional Materials SN - 1616-301X TI - Impact of Processing on Structural and Compositional Evolution in Mixed Metal Halide Perovskites during Film Formation VL - 30 ER - TY - BOOK ED - Ehland, Christoph ID - 35497 SN - 9789004426559 TI - Imperial Middlebrow VL - Volume 7 ER - TY - JOUR AU - Breuer, Judith AU - Vogelsang, Christoph AU - Reinhold, Peter ID - 35527 JF - PhyDid A - Physik und Didaktik in Schule und Hochschule TI - Implementation und Nutzung von Unterrichtsmaterialien im schulischen Unterricht – Eine Bestandsaufnahme der mathematisch-naturwissenschaftlichen Fächer ER - TY - CONF AU - Risse, L. AU - Kullmer, G. ID - 22143 T2 - DVM-Bericht 405, Arbeitskreis: Additiv gefertigte Bauteile und Strukturen, Deutscher Verband für Materialforschung und -prüfung e.V. TI - Implementierung additiver Fertigungsverfahren in den chirurgischen Arbeitsablauf VL - 405 ER - TY - GEN AU - Thiele, Simon ID - 20820 TI - Implementing Machine Learning Functions as PYNQ FPGA Overlays ER - TY - JOUR AU - Soleymani, Mohammad AU - Santamaria, Ignacio AU - Schreier, Peter J ID - 40675 IS - 10 JF - IEEE Transactions on Vehicular Technology TI - Improper Gaussian Signaling for the $K$-User MIMO Interference Channels With Hardware Impairments VL - 69 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 - Gräßler, Iris AU - Scholle, Philipp AU - Thiele, Henrik ID - 23463 JF - Proceedings of the DESIGN 2020 16th International Design Conference; 26. - 29. Okt. 2020 TI - Improving scenario-technique by a semi-automatized consistency assessment based on pattern recognition by artificial neural networks VL - 1 ER - TY - JOUR AU - Sonnenrein, G. AU - Baumhögger, Elmar AU - Elsner, A. AU - Morbach, A. AU - Neukötter, M. AU - Paul, A. AU - Vrabec, J. ID - 17589 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 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 - BOOK ED - Autsch, Sabiene ED - Pickartz, Tim ID - 49915 TI - Impulse 5. Texte und Bilder zur Kunstvermittlung: Go West! Kunst- und Ausstellungsszene New York 2019. ER - TY - GEN AU - Ahrens, Stephan ID - 44394 TI - In memoriam Sarah Maldoror ER - TY - JOUR AB - Photovoltaics is one of the most promising and fastest-growing renewable energy technologies. Although the price-performance ratio of solar cells has improved significantly over recent years{,} further systematic investigations are needed to achieve higher performance and lower cost for future solar cells. In conjunction with experiments{,} computer simulations are powerful tools to investigate the thermodynamics and kinetics of solar cells. Over the last few years{,} we have developed and employed advanced computational techniques to gain a better understanding of solar cells based on copper indium gallium selenide (Cu(In{,}Ga)Se2). Furthermore{,} we have utilized state-of-the-art data-driven science and machine learning for the development of photovoltaic materials. In this Perspective{,} we review our results along with a survey of the field. AU - Mirhosseini, S. Hossein AU - Kormath Madam Raghupathy, Ramya AU - Sahoo, Sudhir K. AU - Wiebeler, Hendrik AU - Chugh, Manjusha AU - Kühne, Thomas ID - 21112 JF - Phys. Chem. Chem. Phys. TI - In silico investigation of Cu(In,Ga)Se2-based solar cells VL - 22 ER - TY - CHAP AU - Scharlau, Ingrid AU - Schreiber, Christine ED - Geiß, Paul Georg ED - Tulis-Oswald, Maria ID - 31662 KW - Unterrichtsfach Psychologie T2 - Psychologie unterrichten in Deutschland, Österreich und der Schweiz: Leitlinien und Grundlagen TI - In Zeiten von p-hacking und fake science: Wissenschaftsorientierung als Herausforderung an die Psychologiedidaktik ER - TY - CONF AU - Reinhold, Jannik AU - Frank, Maximilian AU - Koldewey, Christian AU - Dumitrescu, Roman AU - Buss, Eugen ID - 18876 T2 - Proceedings of the ISPIM Connects Bangkok – Partnering for an Innovative Community TI - In-depth Analysis of the Effects of Smart Services on Value Creation ER - TY - JOUR AU - Kunnathully, Vinay S. AU - Riedl, Thomas AU - Trapp, Alexander AU - Langer, Timo AU - Reuter, Dirk AU - Lindner, Jörg K.N. ID - 17434 JF - Journal of Crystal Growth SN - 0022-0248 TI - InAs heteroepitaxy on nanopillar-patterned GaAs (111)A ER - TY - JOUR AU - Kunnathully, Vinay S. AU - Riedl, Thomas AU - Trapp, Alexander AU - Langer, Timo AU - Reuter, Dirk AU - Lindner, Jörg ID - 34091 JF - Journal of Crystal Growth KW - Materials Chemistry KW - Inorganic Chemistry KW - Condensed Matter Physics SN - 0022-0248 TI - InAs heteroepitaxy on nanopillar-patterned GaAs (111)A VL - 537 ER - TY - JOUR AU - Heyser, Per AU - Sartisson, Vadim AU - Meschut, Gerson AU - Droß, Marcel AU - Dröder, Klaus ID - 20235 JF - Materials Testing SN - 0025-5300 TI - Increased load bearing capacity of mechanically joined FRP/metal joints using a pin structured auxiliary joining element ER - TY - CONF AU - Dreiling, Dmitrij AU - Itner, Dominik Thor AU - Feldmann, Nadine AU - Gravenkamp, Hauke AU - Henning, Bernd ID - 17089 TI - Increasing the sensitivity in the determination of material parameters by using arbitrary loads in ultrasonic transmission measurements ER - TY - CONF AU - Knickenberg, Margarita ID - 45052 TI - Individualisierung des Lernens im inklusiven Unterricht aus der Perspektive von Lehrkräften und Kindern. ER - TY - CONF AU - Hellmich, Frank AU - Schwab, Susanne ID - 36236 TI - Individualisierung des Lernens im inklusiven Unterricht aus der Perspektive von Lehrkräften und Kindern. Symposium auf der 8. Tagung der Gesellschaft für Empirische Bildungsforschung (GEBF). Thema: „Bildung gestalten – Partizipation erreichen – Digitalisierung nutzen“ ER - TY - CONF AU - Lange, Sven AU - Schroder, Dominik AU - Hedayat, Christian AU - Otto, Thomas AU - Hilleringmann, Ulrich ID - 39410 T2 - 2019 17th IEEE International New Circuits and Systems Conference (NEWCAS) TI - Inductive Locating Method to Locate Miniaturized Wireless Sensors within Inhomogeneous Dielectrics ER - TY - JOUR AB - A lower 24-h urine pH (24h-pH), i.e., a higher renal excretion of free protons, at a given acid load to the body, denotes a reduction in the kidney’s capacity for net acid excretion (NAE). There is increasing evidence, not only for patients with type 2 diabetes but also for healthy individuals, that higher body fatness or waist circumference (WC) has a negative impact on renal function to excrete acids (NAE). We hypothesized that adiposity-related inflammation molecules might mediate this relation between adiposity and renal acid excretion function. Twelve biomarkers of inflammation were measured in fasting blood samples from 162 adult participants (18–25 yr old) of the Dortmund Nutritional and Anthropometric Longitudinally Designed (DONALD) study who had undergone anthropometric measurements and collected 24-h urine samples. Both Baron and Kenny’s (B&K’s) steps to test mediation and causal mediation analysis were conducted to examine the potential mediatory roles of biomarkers of inflammation in the WC-24-h pH relationship after strictly controlling for laboratory-measured NAE. In B&K’s mediation analysis, leptin, soluble intercellular adhesion molecule 1 (sICAM-1), and adiponectin significantly associated with the outcome 24-h pH and attenuated the WC-pH relation. In agreement herewith, causal mediation analysis estimated the “natural indirect effects” of WC on 24-h pH via leptin ( P = 0.01) and adiponectin ( P = 0.03) to be significant, with a trend for sICAM-1 ( P = 0.09). The calculated proportions mediated by leptin, adiponectin, and sICAM-1 were 64%, 23%, and 12%, respectively. Both mediation analyses identified an inflammatory cytokine (leptin) and an anti-inflammatory cytokine (adiponectin) along with sICAM-1 as being potentially involved in mediating adiposity-related influences on renal acid excretion capacity. AU - Hua, Yifan AU - Herder, Christian AU - Kalhoff, Hermann AU - Buyken, Anette AU - Esche, Jonas AU - Krupp, Danika AU - Wudy, Stefan A. AU - Remer, Thomas ID - 27800 JF - American Journal of Physiology-Renal Physiology SN - 1931-857X TI - Inflammatory mediators in the adipo-renal axis: leptin, adiponectin, and soluble ICAM-1 ER - TY - JOUR AU - Knust, Steffen AU - Kuhlmann, Andreas AU - Orive, Alejandro G. AU - de los Arcos de Pedro, Maria Teresa AU - Grundmeier, Guido ID - 22536 JF - Surface and Interface Analysis SN - 0142-2421 TI - Influence of dielectric barrier plasma treatment of ZnMgAl alloy‐coated steel on the adsorption of organophosphonic acid monolayers ER - TY - GEN AU - Tischendorf, Ricardo AU - Schmid, Hans-Joachim AU - Bieber, M. AU - Reddemann , M. AU - Kneer, R. AU - Fröde, F. AU - Grenga, T. AU - Pitsch, H. ID - 25062 TI - Influence of differing nozzle configurations on the final particle characteristics and particle structure evolution in spray flames ER - TY - JOUR AU - Bürger, Julius AU - Riedl, Thomas AU - Lindner, Jörg K.N. ID - 20892 JF - Ultramicroscopy SN - 0304-3991 TI - Influence of lens aberrations, specimen thickness and tilt on differential phase contrast STEM images ER - TY - JOUR AU - Bürger, Julius AU - Riedl, Thomas AU - Lindner, Jörg ID - 34088 JF - Ultramicroscopy KW - Instrumentation KW - Atomic and Molecular Physics KW - and Optics KW - Electronic KW - Optical and Magnetic Materials SN - 0304-3991 TI - Influence of lens aberrations, specimen thickness and tilt on differential phase contrast STEM images VL - 219 ER - TY - CONF AU - Schöppner, Volker AU - Bialaschik, Max ID - 24471 T2 - 73th Annual Assembly of the International Institute of Welding (IIW) TI - Influence of Material Degradation on Weld Seam Quality in Hot Gas Welding of Polyamides ER - TY - JOUR AU - Grydin, Olexandr AU - Matzelt, Manuel AU - Andreiev, Anatolii AU - Frolov, Yaroslav AU - Schaper, Mirko ID - 23899 JF - Advanced Engineering Materials SN - 1438-1656 TI - Influence of Microstructure in Near‐Surface Areas of Feedstocks on the Bond Strength of Roll Bonded Aluminum Clads ER - TY - CHAP AU - Grydin, Olexandr AU - Stolbchenko, Mykhailo AU - Schaper, Mirko ID - 24575 SN - 2367-1181 T2 - Light Metals 2020 TI - Influence of Nozzle Shape on Near-Surface Segregation Formation During Twin-Roll Casting of Aluminum Strips ER - TY - CONF AU - Kummert, Chrstina AU - Diekmann, Wolfgang AU - Tews, Karina AU - Schmid, Hans-Joachim ID - 27106 T2 - 29th Annual International Solid Freeform Fabrication Symposium TI - Influence of Part Microstructure on Mechanical Properties of PA6X Laser Sintered Specimens ER - TY - CONF AU - Kummert, Christina AU - Diekmann, Wolfgang AU - Tews, Katrin AU - Schmid, Hans-Joachim ID - 22182 T2 - 29th Annual International Solid Freeform Fabrication Symposium TI - Influence of Part Microstructure on Mechanicl Properties of PA6X Laser Sintered Specimens VL - 29 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 -