@inproceedings{55631, abstract = {{This paper investigates the remaining useful lifetime (RUL) estimation of bearings under dynamic, i.e., time-varying, operating conditions (OC). Unlike conventional studies that assume constant OC in bearing accelerated life tests, we introduce a dataset with time-varying OC during run-to-failure experiments, simulating real-world scenarios. We explore data-driven approaches to identify the transition point from a healthy to an unhealthy state and estimate the RUL. Additionally, we examine strategies for integrating OC information to enhance RUL estimations. These methodologies are evaluated through numerical experiments using various machine learning algorithms.}}, author = {{Javanmardi, Alireza and Aimiyekagbon, Osarenren Kennedy and Bender, Amelie and Kimotho, James Kuria and Sextro, Walter and Hüllermeier, Eyke}}, booktitle = {{PHM Society European Conference}}, isbn = {{978-1-936263-40-0}}, location = {{Prague, Czech Republic}}, number = {{1}}, publisher = {{PHM Society}}, title = {{{Remaining Useful Lifetime Estimation of Bearings Operating under Time-Varying Conditions}}}, doi = {{10.36001/phme.2024.v8i1.4101}}, volume = {{8}}, year = {{2024}}, } @article{58543, abstract = {{This work analyses load profiles for East African microgrids, and then investigates the integration of electric two-wheelers and portable storage into a solar PV with battery microgrid in Uganda, East Africa. By introducing e-mobility and portable storage, demand side management strategic load growth can thus be achieved and electricity access can be expanded. Battery degradation is also considered. The results showed a 98.5% reduction in PV energy curtailment and a 57% reduction in the levelized cost of energy (LCOE) from 0.808 USD/kWh to 0.350 USD/kWh when the electric two-wheeler and portable storage loads were introduced. Such reductions are important enablers of financial viability and sustainability of microgrids. It is possible to avoid emissions of up to 73.27 tons of CO2/year with the proposed e-bikes, and an average of 160 customers could be served annually as off-microgrid consumers without requiring an investment in additional distribution infrastructure. Annual revenue could be increased by 135% by incorporating the additional loads. Sensitivity analyses were conducted by varying component costs, the battery lifetime, the interest rate, and the priority weighting of the additional loads. The battery costs were found to be a major contributor to lifecycle costs (LCC) and also have a big impact on the LCOE. The interest rate significantly affects the LCC as well.}}, author = {{Kakande, Josephine Nakato and Philipo, Godiana Hagile and Krauter, Stefan}}, issn = {{2673-9941}}, journal = {{Solar}}, number = {{4}}, pages = {{694--727}}, publisher = {{MDPI AG}}, title = {{{Optimized E-Mobility and Portable Storage Integration in an Isolated Rural Solar Microgrid in Uganda}}}, doi = {{10.3390/solar4040033}}, volume = {{4}}, year = {{2024}}, } @misc{55359, booktitle = {{MedienPädagogik}}, editor = {{Glawe, Katrin and Kamin, Anna-Maria and Herding, Jana and Büker, Petra}}, issn = {{1424-3636}}, number = {{62}}, title = {{{Lehrer:innenbildung unter der Perspektive von Inklusion und Digitalisierung. Mit Offenen Bildungsressourcen (OER) zu offenen, innovativen Bildungs­praktiken (OEP) }}}, doi = {{https://doi.org/10.21240/mpaed/62.X}}, year = {{2024}}, } @article{57586, abstract = {{Der folgende Beitrag beschreibt die Gestaltung einer sprachreflexiven Lernumgebung im Sinne der Design Based Research-Forschung. Auf der Grundlage des Conjecture Mapping nach Sandoval (2014) wurden Annahmen formuliert und Design-Elemente entwickelt. Ziel der Forschung ist es, neben der Entwicklung des Designs, Erkenntnisse über das Potential illustrierter mehrsprachiger Kinder- und Jugendliteratur zur (Weiter-)Entwicklung der individuellen Sprach(en)bewusstheit aus kindlicher Perspektive zu erhalten. In einem den Beitrag abschließenden Ausblick werden erste Forschungsergebnisse aus der Erprobung dieses Designs vorgestellt.}}, author = {{Härtel, Kira}}, issn = {{2511-0667}}, journal = {{EDeR – Educational Design Research}}, number = {{2}}, pages = {{1–18}}, publisher = {{Staats- und Universitatsbibliothek Hamburg Carl von Ossietzky}}, title = {{{Sprach(en)bewusstheit im Deutschunterricht: Gestaltung einer sprachreflexiven Lernumgebung in einem designbasierten Projekt}}}, doi = {{10.15460/eder.8.2.2206}}, volume = {{8}}, year = {{2024}}, } @article{58560, author = {{Glawe, Katrin and Kamin, Anna-Maria and Herding, Jana and Büker, Petra}}, issn = {{1424-3636}}, journal = {{MedienPädagogik}}, number = {{62}}, pages = {{i--x}}, title = {{{Editorial: Lehrer:innenbildung unter der Perspektive von Inklusion und Digitalisierung}}}, doi = {{https://doi.org/10.21240/mpaed/62/2024.07.11.X}}, year = {{2024}}, } @phdthesis{58450, abstract = {{Die vorliegende Arbeit befasst sich mit der modellprädiktiven Planung zeitoptimierter Trajektorien für mehrachsige kinematisch redundante Mechanismen. Es werden zunächst grundlegende Begriffe erläutert, bevor der Stand der Wissenschaft und Technik hinsichtlich der Trajektorienplanung von kinematisch redundanten und nicht-redundanten Mechanismen sowie der Ausführung von Optimierungen auf Industriesteuerungen vorgestellt wird. Im Anschluss wird die modellprädiktive Planung erläutert. Diese nutzt die Mehrdeutigkeit bei der Ermittlung der Gelenkpositionen kinematisch redundanter Mechanismen, um die Verfahrzeit zwischen Sollpositionen im Rahmen von Punkt-zu-Punkt-Bewegungen zu minimieren. Anhand eines kinematisch redundanten hybridkinematischen Mechanismus erfolgt zunächst eine simulative Validierung des Ansatzes. Bezogen auf die immer flexibler werdenden Fertigungen im Kontext Losgröße-1 sind jedoch echtzeitfähige selbstoptimierende Steuerungen erforderlich, die sich zur Laufzeit auf wechselnde Aufgaben einstellen und mit weiteren Systemen interagieren. Aus diesem Grund liegt der Fokus auf der echtzeitfähigen Ausführung des Ansatzes auf einer Industriesteuerung, ein entscheidender Punkt, um die erforderliche Flexibilität und industrielle Einsetzbarkeit zu erreichen und gleichzeitig ein signifikanter Unterschied zum Stand der Technik. Hierzu erfolgt die Umsetzung auf das reale System und der Nachweis der echtzeitfähigen Ausführung mit Optimierungszeiten kleiner einer Millisekunde.}}, author = {{Rüting, Arne Thorsten}}, title = {{{Echtzeitfähige modellprädiktive Planung zeitoptimierter Trajektorien für kinematisch redundante Mechanismen auf industrieller Hardware}}}, doi = {{10.17619/UNIPB/1-2112}}, year = {{2024}}, } @inproceedings{56004, author = {{von Neumann, Thilo and Boeddeker, Christoph and Cord-Landwehr, Tobias and Delcroix, Marc and Haeb-Umbach, Reinhold}}, booktitle = {{2024 IEEE International Conference on Acoustics, Speech, and Signal Processing Workshops (ICASSPW)}}, publisher = {{IEEE}}, title = {{{Meeting Recognition with Continuous Speech Separation and Transcription-Supported Diarization}}}, doi = {{10.1109/icasspw62465.2024.10625894}}, year = {{2024}}, } @inproceedings{56272, author = {{Boeddeker, Christoph and Cord-Landwehr, Tobias and Haeb-Umbach, Reinhold}}, booktitle = {{Interspeech 2024}}, publisher = {{ISCA}}, title = {{{Once more Diarization: Improving meeting transcription systems through segment-level speaker reassignment}}}, doi = {{10.21437/interspeech.2024-1286}}, year = {{2024}}, } @inproceedings{57659, author = {{Vieting, Peter and Berger, Simon and von Neumann, Thilo and Boeddeker, Christoph and Schlüter, Ralf and Haeb-Umbach, Reinhold}}, booktitle = {{2024 IEEE Spoken Language Technology Workshop (SLT)}}, title = {{{Combining TF-GridNet and Mixture Encoder for Continuous Speech Separation for Meeting Transcription}}}, year = {{2024}}, } @article{58612, author = {{Luis-Sunga, Maximina and González-Orive, Alejandro and Calderón, Juan Carlos and Gamba, Ilaria and Ródenas, Airán and de los Arcos de Pedro, Maria Teresa and Hernández-Creus, Alberto and Grundmeier, Guido and Pastor, Elena and García, Gonzalo}}, issn = {{2574-0970}}, journal = {{ACS Applied Nano Materials}}, title = {{{Nickel-Induced Reduced Graphene Oxide Nanoribbon Formation on Highly Ordered Pyrolytic Graphite for Electronic and Magnetic Applications}}}, doi = {{10.1021/acsanm.3c05949}}, year = {{2024}}, } @article{58611, abstract = {{AFM-IR investigation of thin PECVD SiOx films on a polypropylene substrate in the surface-sensitive mode}}, author = {{Müller, Hendrik and Stadler, Hartmut and de los Arcos de Pedro, Maria Teresa and Keller, Adrian and Grundmeier, Guido}}, issn = {{2190-4286}}, journal = {{Beilstein Journal of Nanotechnology}}, number = {{1}}, pages = {{603–611}}, title = {{{AFM-IR investigation of thin PECVD SiO x films on a polypropylene substrate in the surface-sensitive mode}}}, doi = {{10.3762/bjnano.15.51}}, volume = {{15}}, year = {{2024}}, } @article{58620, author = {{Dehn, Freya}}, journal = {{Sprache im Beruf}}, number = {{2}}, pages = {{243--246}}, title = {{{Freya Dehn (Universität Paderborn) rezensiert: Ariane Steuber: Tätigkeit und Sprache. Zur Didaktik inklusiver Sprachförderung in der Berufsvorbereitung (Beiträge zur Sonderpädagogik, 32)}}}, volume = {{7}}, year = {{2024}}, } @article{58309, abstract = {{This study evaluates four widely used fracture simulation methods, comparing their computational expenses and implementation complexities within the finite element (FE) framework when employed on heterogeneous solids. Fracture methods considered encompass the intrinsic cohesive zone model (CZM) using zero-thickness cohesive interface elements (CIEs), the standard phase-field fracture (SPFM) approach, the cohesive phase-field fracture (CPFM) approach, and an innovative hybrid model. The hybrid approach combines the CPFM fracture method with the CZM, specifically applying the CZM within the interface zone. The finite element model studied is characterized by three specific phases: inclusions, matrix, and the interface zone. This case study serves as a potential template for meso- or micro-level simulations involving a variety of composite materials. The thorough assessment of these modeling techniques indicates that the CPFM approach stands out as the most effective computational model, provided that the thickness of the interface zone is not significantly smaller than that of the other phases. In materials like concrete, which contain interfaces within their microstructure, the interface thickness is notably small when compared to other phases. This leads to the hybrid model standing as the most authentic finite element model, utilizing CIEs within the interface to simulate interface debonding. A significant finding from this investigation is that within the CPFM method, for a specific interface thickness, convergence with the hybrid model can be observed. This suggests that the CPFM fracture method could serve as a unified fracture approach for multiphase materials when a specific interfacial thickness is used. In addition, this research provides valuable insights that can advance efforts to fine-tune material microstructures. An investigation of the influence of interfacial material properties, voids, and the spatial arrangement of inclusions shows a pronounced effect of these parameters on the fracture toughness of the material.}}, author = {{Najafi Koopas, Rasoul and Rezaei, Shahed and Rauter, Natalie and Ostwald, Richard and Lammering, Rolf}}, issn = {{2076-3417}}, journal = {{Applied Sciences}}, number = {{1}}, publisher = {{MDPI AG}}, title = {{{Comparative Analysis of Phase-Field and Intrinsic Cohesive Zone Models for Fracture Simulations in Multiphase Materials with Interfaces: Investigation of the Influence of the Microstructure on the Fracture Properties}}}, doi = {{10.3390/app15010160}}, volume = {{15}}, year = {{2024}}, } @inproceedings{58648, author = {{Unruh, Roland and Böcker, Joachim and Schafmeister, Frank}}, booktitle = {{Proceedings of the Energy Conversion Congress & Expo (ECCE Europe)}}, location = {{Darmstadt}}, publisher = {{IEEE}}, title = {{{Experimentally Verified 22 kW, 40 kHz LLC Resonant Converter Design with new Control for a 1 MW Cascaded H-Bridge Converter}}}, doi = {{10.1109/ECCEEurope62508.2024.10751954}}, year = {{2024}}, } @article{57305, author = {{Gräßler, Iris and Pottebaum, Jens and Grewe, Benedikt}}, journal = {{VDI Konstruktion}}, pages = {{60--61}}, title = {{{Forschen für die Zukunft der Produktentstehung. Innovation erleben und validieren}}}, volume = {{76}}, year = {{2024}}, } @misc{51149, author = {{Reimer, Jens and Massopo, Orlando and Schmid, Hans-Joachim}}, title = {{{Entwicklung einer Datenbank hergestellter Nanomaterialien mittels Gasphasensynthese (Studienarbeit)}}}, year = {{2024}}, } @unpublished{58663, abstract = {{We present a general and intuitive ambiguity model for intersections, junctions and other structures in binary edge images. The model is combined with edge tracing, where edges are ordered sequences of connected pixels. The objective is to provide a versatile preprocessing method for tasks such as figure-ground segmentation, object recognition, topological analysis, etc. By using only a small set of straightforward principles, the results are intuitive to describe. This helps to implement subsequent processing steps, such as resolving ambiguous edge connections at junctions. By using an augmented edge map, neighboring edges can be directly accessed using quick local search operations. The edge tracing uses recursion, which leads to compact programming code. We explain our algorithm using pseudocode, compare it with related methods, and show how simple modular postprocessing steps can be used to optimize the results. The complete algorithm, including all data structures, requires less than 50 lines of pseudocode. We also provide a C++ implementation of our method.}}, author = {{Hennig, Markus and Leineke, Marc and Mertsching, Bärbel}}, booktitle = {{arXiv:2408.01712}}, title = {{{A General Ambiguity Model for Binary Edge Images with Edge Tracing and its Implementation}}}, year = {{2024}}, } @book{58684, abstract = {{Die Forschung zum kindlichen Wortlernen hat in den letzten Jahren aufgezeigt, dass der Erwerb eines neuen Wortes durch Prozessualität gekennzeichnet ist. Ein aktuelles Forschungsinteresse richtet sich in diesem Zusammenhang auf die Frage, inwieweit die längerfristigen kontextuellen Gegebenheiten diesen Lernprozess beeinflussen und ob der Erwerbsprozess durch stabile kontextuelle Bedingungen oder durch kontextuelle Variabilität begünstigt wird. Während sich bisherige Arbeiten in dieser Hinsicht vornehmlich auf isolierte Kontextfaktoren konzentrierten, rückt dieser Band die rahmende soziale Handlung und die beteiligten interaktiven Prozesse in den Mittelpunkt. Er zielt darauf ab, die Auswirkungen langfristiger Kontextbedingungen auf das Wortlernen von Vorschulkindern mit sozialen Robotern und menschlichen Interaktionspartnern systematisch zu untersuchen.}}, author = {{Tolksdorf, Nils Frederik}}, isbn = {{9783381114528}}, publisher = {{A. Francke Verlag}}, title = {{{Wortlernen mit sozialen Robotern}}}, doi = {{10.24053/9783381114528}}, year = {{2024}}, } @inproceedings{58685, abstract = {{In quantitativen Fragebogenstudien arbeiten Forschende mit großen Datensätzen, bei deren Erhebung sie häufig auf Online-Fragebögen anstelle der klassischen Paper-Pencil-Fragebögen setzen. Forschende bevorzugen diese Art der Datenerhebung, da die Daten direkt nach der Eingabe digitalisiert sind; zu bedenken ist aber auch, dass Online-Fragebögen komplexer sind und mehr Vorbereitung benö'gen als Paper-Pencil-Fragebögen. In diesem Workshop werden die Tools LimeSurvey und SoSci Survey vorgestellt, wobei der Fokus zum einen auf „klassischen“ Umfragen (LimeSurvey) und zum anderen auf Experimenten wie Akzeptabilitätsurteilen (SoSci Survey) liegen wird. Außerdem werden wir Vor- und Nachteile, Darstellungs- und Designanforderungen sowie Dos und Don’ts bei der Erstellung von Online-Fragebögen behandeln. Wenn Sie bereits einen eigenen Fragebogen erstellt haben und diesen gerne in LimeSurvey oder SoSci Survey erstellen möchten, bringen Sie ihn gerne zum Workshop mit. Zur Vorbereitung auf den Workshop sollten Sie einen Account bei LimeSurvey (https://www.limesurvey.org/de) und/oder SoSci Survey (https://www.soscisurvey.de/) erstellen. Sollte Ihre Universität über eine eigene LimeSurvey- oder SoSci Survey-Lizenz verfügen, können Sie auch dort einen Account anlegen. Empfehlenswert ist ferner, sich im Vorfeld das DGFF-Kolleg-Webinar von Henning Rossa zum Thema Fragebogen (https://www.dgff.de/fragebogen-henning-rossa/) anzuschauen.}}, author = {{Hambach, Dennis and Gövert, Andre}}, location = {{Paderborn / Bielefeld}}, title = {{{Hands‐on‐Workshop: Online‐Fragebogen}}}, year = {{2024}}, } @article{58698, abstract = {{ Background/Purpose Return to sport decision-making may be improved by assessing an athlete’s ability to coordinate movement with opponents in sport. The purpose was to investigate whether previous injuries associated with female soccer players’ interpersonal coordination during a collision avoidance task. The authors hypothesized that external perturbations would disrupt the strength and stability of coordinated movement, and that individuals with a history of injury would be less likely to recover coordinated movement. Study Design Cross-Sectional Methods Nine female athletes with a history of lower extremity injuries and nine without injuries were paired into dyads. Each dyad completed twenty trials of an externally paced collision-avoidance agility task with an unanticipated perturbation. Participant trajectories were digitized and analyzed using cross-recurrence quantification analysis (CRQA) to determine the strength and stability of interpersonal coordination dynamics. Trials in which participants with injury history assumed leader or follower roles within each dyad were then used to study how dyadic coordination varied across task stages (early, perturbation, and late) using linear mixed effect models. Cohen’s d effect sizes were calculated to demonstrate magnitude of differences. In exploratory analysis, psychological readiness (i.e., self-reported knee functioning, fear of injury, and risk-taking propensity) was evaluated for their association with leader-follower status. Results Perturbation disrupted the strength (R2=0.65, p<0.001, early=49.7±1.7, perturbation=41.1±1.7, d=0.39) and stability (R2=0.71, p < 0.001, early=65.0±1.6, perturbation=58.0±1.7, d=0.38) of interpersonal coordination regardless of leader-follower status. Individuals with injury history failed to restore coordination after the perturbation compared to control participants (injury=44.2.0±2.1, control=50.8±2.6, d=0.39). Neither demographic nor psychological measures were associated with leader-follower roles (B=0.039, p=0.224). Conclusion Individuals with a history of lower extremity injury may have a diminished ability to adapt interpersonal coordination to perturbations, possibly contributing to a higher risk of re-injury. Level of Evidence 3 }}, author = {{Fernandes, Courtney A and Norte, Grant E and Schwab, Sarah M and Gokeler, Alli and Murray, Amanda and Bazett-Jones, David M and Sherman, David A}}, issn = {{2159-2896}}, journal = {{International Journal of Sports Physical Therapy}}, number = {{5}}, publisher = {{International Journal of Sports Physical Therapy}}, title = {{{Interpersonal Coordination between Female Soccer Players: Leader-Follower Roles within a Collision-Avoidance Task}}}, doi = {{10.26603/001c.116156}}, volume = {{19}}, year = {{2024}}, }