@inproceedings{63658,
author = {{Klüttermann, Simon and Rutinowski, Jérôme and Polachowski, Frederik and Nguyen, Anh and Grimme, Britta and Roidl, Moritz and Müller, Emmanuel}},
booktitle = {{2024 International Conference on Machine Learning and Applications (ICMLA)}},
pages = {{1705–1711}},
title = {{{On the Effectiveness of Heterogeneous Ensemble Methods for Re-identification}}},
year = {{2024}},
}
@phdthesis{56654,
abstract = {{Residual stresses in directly joined laminates made of steel and carbon fiber reinforced epoxy resin reduce the interface and bond strength and thus have to be taken into account for the strength analysis of structural components. For a holistic description of residual stresses, a thermo-chemo-mechanical constitutive model is introduced in the present work and presented for the multi-scale analysis of residual stress patterns. In this context, the analysis of representative unit cells with regular and stochastic distribution of fibers gives information about the associated deformation and stress fields. Dehomogenization at macroscopically highly stressed regions, characterized by local stress peaks, reveals the effect of gradient deformation in the microstructure. Another aspect of this work is the development of FFT-based Galerkin methods, which allows an evaluation of the effect of defect densities, heterogeneities and morphologies on the applicability of the incremental hole drilling method. It could be demonstrated that the incremental hole drilling method is particularly sensitive to defects running along the surface.}},
author = {{Tinkloh, Steffen Rainer}},
isbn = {{9783757887650}},
keywords = {{Hybride Werkstoffverbunde, Eigenspanungen, FFT-basierte Galerkin-Methode, Mikromechanik, Finite-Elemente-Methode}},
pages = {{168}},
publisher = {{BoD - Books on Demand}},
title = {{{Mikromechanische Analyse von Eigenspannungen in direktgefügten kohlenstofffaserverstärkten Kunststoff-Stahl-Schichtverbunden}}},
year = {{2024}},
}
@article{57699,
abstract = {{The optimization of process parameters in powder Directed Energy Deposition (DED) is essential for achieving consistent, high-quality bead geometries, which directly influence the performance and structural integrity of fabricated components. As a subset of additive manufacturing (AM), the DED process, also referred to as laser metal deposition (LMD), enables precise, layer-by-layer material deposition, making it highly suitable for complex geometries and part repair applications. Critical parameters, such as the laser power, feed rate, powder mass flow, and substrate temperature govern the deposition process, impacting the bead height, width, contact angle, and dilution. Inconsistent control over these variables can lead to defects, such as poor bonding, dimensional inaccuracies, and material weaknesses, ultimately compromising the final product. This paper investigates the effects of various process parameters, specifically the substrate temperature, on bead track geometry in DED processes for stainless steel (1.4404). A specialized experimental setup, integrated within a DED machine, facilitates the controlled thermal conditioning of sample sheets. Using Design of Experiments (DoE) methods, individual bead marks are generated and analyzed to assess geometric characteristics. Regression models, including both linear and quadratic approaches, are constructed to predict machine parameters for achieving the desired bead geometry at different substrate temperatures. Validation experiments confirm the accuracy and reliability of the models, particularly in predicting the bead height, bead width, and contact angle across a broad range of substrate temperatures. However, the models demonstrated limitations in accurately predicting dilution, indicating the need for further refinement. Despite some deviations in measured values, successful fabrication is achieved, demonstrating robust bonding between the bead and substrate. The developed models offer insights into optimizing DED process parameters to achieve desired bead characteristics, advancing the precision and reliability of additive manufacturing technology. Future work will focus on refining the regression models to improve predictions, particularly for dilution, and further investigate non-linear interactions between process variables.}},
author = {{Chalicheemalapalli Jayasankar, Deviprasad and Gnaase, Stefan and Lehnert, Dennis and Walter, Artur and Rohling, Robin and Tröster, Thomas}},
issn = {{2075-4701}},
journal = {{Metals}},
keywords = {{additive manufacturing, direct energy deposition, laser metal deposition}},
number = {{12}},
publisher = {{MDPI AG}},
title = {{{Effect of Substrate Temperature on Bead Track Geometry of 316L in Directed Energy Deposition: Investigation and Regression Modeling}}},
doi = {{10.3390/met14121353}},
volume = {{14}},
year = {{2024}},
}
@article{56089,
abstract = {{Additive manufacturing (AM) technologies enable near-net-shape designs and demand-oriented material usage, which significantly minimizes waste. This points to a substantial opportunity for further optimization in material savings and process design. The current study delves into the advancement of sustainable manufacturing practices in the automotive industry, emphasizing the crucial role of lightweight construction concepts and AM technologies in enhancing resource efficiency and reducing greenhouse gas emissions. By exploring the integration of novel AM techniques such as selective laser melting (SLM) and laser metal deposition (LMD), the study aims to overcome existing limitations like slow build-up rates and limited component resolution. The study’s core objective revolves around the development and validation of a continuous process chain that synergizes different AM routes. In the current study, the continuous process chain for DMG MORI Lasertec 65 3D’s LMD system and the DMG MORI Lasertec 30 3D’s was demonstrated using 316L and 1.2709 steel materials. This integrated approach is designed to significantly curtail process times and minimize component costs, thus suggesting an industry-oriented process chain for future manufacturing paradigms. Additionally, the research investigates the production and material behavior of components under varying manufacturing processes, material combinations, and boundary layer materials. The culmination of this study is the validation of the proposed process route through a technology demonstrator, assessing its scalability and setting a benchmark for resource-efficient manufacturing in the automotive sector.}},
author = {{Chalicheemalapalli Jayasankar, Deviprasad and Gnaase, Stefan and Kaiser, Maximilian Alexander and Lehnert, Dennis and Tröster, Thomas}},
issn = {{2075-4701}},
journal = {{Metals}},
keywords = {{additive manufacturing (AM), selective laser melting (SLM), laser metal deposition (LMD), hybrid manufacturing, process optimization, 316L, 1.2709}},
number = {{7}},
publisher = {{MDPI AG}},
title = {{{Advancements in Hybrid Additive Manufacturing: Integrating SLM and LMD for High-Performance Applications}}},
doi = {{10.3390/met14070772}},
volume = {{14}},
year = {{2024}},
}
@article{55743,
abstract = {{The use of hybrid materials as a combination of fibre-reinforced plastic (FRP) and metal is of great interest in order to meet the increasing demands for sustainability, efficiency, and emission reduction based on the principle of lightweight design. These two components can therefore be joined using the intrinsic joining technique, which is formed by curing the matrix of the FRP component. In this study, for the hybrid joint, unidirectionally pre-impregnated semi-finished products (prepregs) with duromer matrix resin and micro-alloyed HC340LA steel were used. In order to conduct a detailed investigation, the damage mechanisms of intrinsically produced fibre metal laminates (FMLs), a new clamping device, and a novel pressing tool were designed and put into operation. The prepregs were prestressed by applying a preloading force using a specially designed prestressing frame. Hybrid specimens were then produced and subjected to nanoindentation and a shear tensile test. In particular, the effect of the residual stress state by varying the defined prestressing force on the damage mechanisms was studied. The results showed that no fracture patterns occurred in the interface of the specimens without preloading as a result of curing at 120 °C, whereas specimens with preloading failed at the boundary layer in the tensile range. Nevertheless, all specimens cured at 160 °C failed at the boundary layer in the tensile range. Furthermore, it was proven that the force and displacement of the preloaded specimens were promisingly higher than those of the unpreloaded specimens.}},
author = {{Irmak, Hayrettin and Tinkloh, Steffen Rainer and Marten, Thorsten and Tröster, Thomas}},
issn = {{2504-477X}},
journal = {{Journal of Composites Science}},
keywords = {{CFRP, prestressing, fibre metal laminate, interface, prepreg, shear tensile test}},
number = {{8}},
publisher = {{MDPI AG}},
title = {{{Development of a Tool Concept for Prestressed Fibre Metal Laminates and Their Effect on Interface Failure}}},
doi = {{10.3390/jcs8080316}},
volume = {{8}},
year = {{2024}},
}
@inproceedings{65119,
author = {{Schöppner, Volker and Arndt, Theresa}},
title = {{{Experimental investigations on anvil-free ultrasonic welding for welding situations with one sided access}}},
year = {{2024}},
}
@book{65123,
abstract = {{ Inhalt Aktuelle rechtliche Rahmenbedingungen TA Luft – Wesentliche Änderungen, Herausforderungen, Konsequenzen in der Praxis und laufende Aktivitäten 1 Die Lösungsmittelbilanz bei VOC Anlagen als Nachweis der Einhaltung des Grenzwertes für diffuse Emissionen The solvent mass balance for VOC installations as verification of compliance with the limit value for fugitive emissions 11 Diffuse Emissionen Dichte Flanschverbindungen – Richtlinie VDI 2290 23 Technik zur Vermeidung und Verminderung von diffusen Emissionen – Regel- und Absperrarmaturen 37 Erstellung der Lösungsmittelbilanz im Kontext der 31. BImSchV – Rechtliche Anforderungen, praktische Herausforderungen und Unsicherheiten Preparation of the solvent balance in the context of the 31. BImSchV - legal requirements, practical challenges and uncertainties 45 Entwicklung einer analytischen Berechnungsmethode zur Auslegung thermoplastischer Flanschsysteme 61 VKA Control - Bewertung von Legionellenemissionen aus Verdunstungskühlanlagen: Neue Erkenntnisse und Methoden 71 Verbrennungsführung und Minderung organischer Emissionen 27. BImSchV versus Klimaschut...
}},
editor = {{Moritzer, Elmar and Bartmann, Finn and Riedl, Alexander}},
isbn = {{9783181024324}},
publisher = {{VDI Verlag}},
title = {{{Entwicklung einer analytischen Berechnungsmethode zur Auslegung thermoplastischer Flanschsysteme}}},
doi = {{10.51202/9783181024324}},
year = {{2024}},
}
@inproceedings{65125,
abstract = {{"In the course of environmental protection and the amendment of TA Luft, emissions from flange connections must be reduced (to L0.01). The design and calculation of steel flanges is easy to handle with the help of EN 1591-1 and EN 13555. However, these standards are not suitable in their current form for thermoplastic sealing joints, such as those used in natural gas supply. For this reason, lengthy and cost-intensive tests must currently be carried out to verify tightness and strength. The aim of a doctoral project is to develop a time-efficient and cost-effective analytical calculation method based on the existing standards. For this purpose, the energy-elastic material parameters of the steel must be replaced by elastoplastic material parameters of the thermoplastics and the calculation algorithm adapted accordingly. The problem is to be investigated with the aid of numerical structural simulations (FEM) and experimental tests."}},
author = {{Bartmann, Finn and Riedl, Alexander and Moritzer, Elmar}},
booktitle = {{22nd International Sealing Conference 2024}},
publisher = {{VDMA Fluidtechnik}},
title = {{{Development of an analytical calculation method for the design of thermoplastic flange systems}}},
doi = {{10.61319/pqdsdeu6}},
year = {{2024}},
}
@inproceedings{59159,
author = {{Moritzer, Elmar and Held, Christian}},
booktitle = {{DVS Plenarsitzung AG W4 Fügen von Kunststoffen}},
publisher = {{DVS}},
title = {{{Direktverschraubung additiv gefertigter Kunststoffbauteile}}},
year = {{2024}},
}
@inbook{65161,
abstract = {{Despite increasing ethnic diversity in Germany, racist structures are still deeply rooted in society,
as is demonstrated by various initiatives and studies. Racism is also evident in the depiction of
Jesus Christ, who traditionally is portrayed as 'white' in Christian art, although he must be read
biblically as a Person of Color (PoC). Examples such as the “Wales Window for Alabama” (1964)
by Ronald John Petts and the contemporary icon by Kelly Latimore “Christ in The Rubble” (2023)
show Jesus as PoC and address racism and social justice. Children’s Bibles continue to be
dominated by ‘white’ depictions of Jesus and the people around him. Works such as the chil-
dren’s Bibles by Desmond Tutu (lyrics) / Laure Fournier et al. (illustration) (2010), Sören Dalevi
(lyrics) / Marcus-Gunnar Petterson (illustration) (2022), Willemijn de Weerd (lyrics) / Marieke ten
Berge (illustration) (2022) and Andrea Karimé (lyrics) / Anna Lisicki-Hehn (illustration) (2023) of-
fer more diverse and racism-sensitive depictions that contribute to the promotion of diversity
competence and positive identity formation. The article argues for a more extensive representa-
tion of diversity in depictions of Jesus Christ in Christian art and children’s Bibles in order to
avoid discriminatory stereotypes and to encourage PoC, children and adults.
}},
author = {{Keuchen, Marion and Lerke, Stephanie}},
booktitle = {{Die Bibel in der Kunst/ Bible in the Arts}},
pages = {{1--21}},
title = {{{Vielfalt begrüßen. Ein rassismuskritischer Blick auf Jesus-Darstellungen in christlicher Kunst und Kinderbibeln}}},
volume = {{8}},
year = {{2024}},
}
@article{65163,
abstract = {{Dieser Beitrag untersucht aktuelle pädagogische und hermeneutische Ansätze der
jüdischen, christlichen und muslimischen Religionspädagogik in Kindertora, Kinderbibel
und Kinderkoran. Er betont die Notwendigkeit für Lehrkräfte, sich mit den spezifischen
pädagogischen und hermeneutischen Ansätzen der drei monotheistischen Religionen
vertraut zu machen, um die didaktischen Heiligen Schriften im Unterricht angemessen
nutzen zu können. Beispiele aus dem aktuellen Religionsunterricht zeigen
Missverständnisse und Überraschungen auf, die durch unzureichendes Wissen entstehen.
Der Artikel hebt die Bedeutung einer jüdischen Identitätsbildung, einer christlichen
diversitätssensiblen Perspektive und von muslimischen normativen Diskursen in den
verschiedenen Religionspädagogiken hervor und diskutiert die Herausforderungen und
Chancen, die mit der Nutzung didaktisierter Heiliger Schriften verbunden sind.
}},
author = {{Keuchen, Marion}},
journal = {{TheoWeb. Zeitschrift für Religionspädagogik}},
keywords = {{Heilige Schriften, interreligiöses Lernen, Schrifthermeneutik, Identität, diversitätssensible Religionspädagogik, jüdische Religionspädagogik, muslimische Religionspädagogik, christliche Religionspädagogik, Holy scriptures, interreligious learning, hermeneutics of scripture, identity, diversity-sensitive religious education, Jewish religious education, Muslim religious education, Christian religious education}},
pages = {{224--237}},
title = {{{Aktuelle pädagogische und hermeneutische Ansätze aus Judentum, Christentum und Islam in Kindertora, Kinderbibel und Kinderkoran: Identitätsbildung, diversitätssensible Religionspädagogik und normative Diskurse}}},
doi = {{10.23770/tw0360}},
volume = {{2}},
year = {{2024}},
}
@article{65189,
author = {{Keuchen, Marion}},
journal = {{ru in-tern. Informationen für Religionslehrer*innen in Westfalen und Lippe}},
pages = {{24--27}},
title = {{{Himmels-Lieder. Bibel-Lieder zur Friedens- und Subjektbildung im Religionsunterricht}}},
volume = {{2}},
year = {{2024}},
}
@unpublished{58873,
abstract = {{We prove that the Patterson-Sullivan and Wigner distributions on the unit
sphere bundle of a convex-cocompact hyperbolic surface are asymptotically
identical. This generalizes results in the compact case by
Anantharaman-Zelditch and Hansen-Hilgert-Schr\"oder.}},
author = {{Delarue, Benjamin and Palmirotta, Guendalina}},
booktitle = {{arXiv:2411.19782}},
title = {{{Patterson-Sullivan and Wigner distributions of convex-cocompact hyperbolic surfaces}}},
year = {{2024}},
}
@inbook{65223,
author = {{Trier, Matthias and Tölle, Laura}},
booktitle = {{Handbuch Netzwerkforschung}},
publisher = {{Springer Fachmedien Wiesbaden}},
title = {{{Struktur und Dynamik in der Netzwerkanalyse}}},
year = {{2024}},
}
@inproceedings{65230,
author = {{Tölle, Laura and Trier, Matthias}},
location = {{Dresden}},
title = {{{The Multidimensional Nature of Polarization in Social Networks: Towards a Typological Model}}},
year = {{2024}},
}
@inproceedings{57309,
author = {{Safranoglou, Ioannis and Stavroulakis, Alexis and Pottebaum, Jens and Ebel, Marcel and Lamprinakis, Georgios and Dimelli, Despina and Mania, Katerina}},
booktitle = {{2024 IEEE International Symposium on Mixed and Augmented Reality Adjunct (ISMAR-Adjunct)}},
publisher = {{IEEE}},
title = {{{Augmented Reality for Real-Time Decision-Making in Flood Emergencies}}},
doi = {{https://doi.org/10.1109/ISMAR-Adjunct64951.2024.00032}},
year = {{2024}},
}
@article{52587,
author = {{Bodden, Eric and Pottebaum, Jens and Fockel, Markus and Gräßler, Iris}},
issn = {{1540-7993}},
journal = {{IEEE Security & Privacy}},
keywords = {{Law, Electrical and Electronic Engineering, Computer Networks and Communications}},
number = {{1}},
pages = {{69--72}},
publisher = {{Institute of Electrical and Electronics Engineers (IEEE)}},
title = {{{Evaluating Security Through Isolation and Defense in Depth}}},
doi = {{10.1109/msec.2023.3336028}},
volume = {{22}},
year = {{2024}},
}
@inproceedings{56636,
abstract = {{Abstract. Business reputation ecosystems are a widely untapped research field. In these ecosystems, agents can selectively exchange (monetary) ratings to in-form about the experienced quality in a market. We build a model for conducting a multi-agent simulation that can be used to simulate and evaluate business rep-utation ecosystems as a new system class. We explore the factual occurring vol-untary payment to create positive (pay) or negative ratings (no pay), selling rat-ings selectively to alleviate information asymmetry, and the workings of counter-ratings to prevent buyers' dishonest ratings. Thereby, we analyze, among others, agent profitability, the occurrence of dishonest ratings, and reputation bias and sensitivity. The results provide simulation-based empirical evidence that the con-cept of monetary reputation systems provides necessary incentives for participa-tion, and high-quality sellers and honest buyers benefit from such a system. The results indicate that counter-ratings prompt buyers}},
author = {{Ibrahimli, Ulvi and Hemmrich, Simon and Zauke, Simon and Winkelmann, Axel}},
booktitle = {{19. Internationale Tagung Wirtschaftsinformatik (WI24)}},
keywords = {{Reputation System, Payment as Rating, Multi-Agent Simulation, Lemon Markets}},
location = {{Würzburg}},
title = {{{Overcoming Lemon Markets with Business Reputation Ecosystem – A Multi-agent Simulation on Monetary Ratings}}},
year = {{2024}},
}
@article{60689,
author = {{Weiss Lucas, C and Kochs, S and Jost, J and Loução, R and Kocher, M and Goldbrunner, R and Wiewrodt, D and Jonas, Kristina}},
journal = {{Frontiers in. Psychology}},
title = {{{ Digital participation of brain tumour patients in the assessment and treatment of communication disorders}}},
doi = {{https://doi.org/10.3389/fpsyg.2023.1287747 }},
volume = {{14}},
year = {{2024}},
}
@article{60688,
author = {{Jonas, Kristina and Jaecks, P and Frieg, H}},
journal = {{Frontiers in. Psychology}},
title = {{{Editorial: Digital participation and communication disorders across the lifespan}}},
doi = {{https://doi.org/10.3389/fpsyg.2024.1417994 }},
volume = {{15}},
year = {{2024}},
}