@inproceedings{WagnerHayNeidhartetal., author = {Wagner, Bernd and Hay, Stefan and Neidhart, Thomas and Spirkl, Florian and Ried, Michael and Zrenner, Louis and Weidlich, Ingo and Gabriel, Eugen and Banning, Timo}, title = {TFSB as Bedding Material in District Heating Pipe Constructin - Scientifically Proven Long-Term Experience}, series = {Proceedings of the 19th International Symposium on District Heating and Cooling; 2025, Genk (Belgium)}, booktitle = {Proceedings of the 19th International Symposium on District Heating and Cooling; 2025, Genk (Belgium)}, editor = {Vanhoudt, Dirk}, publisher = {Springer}, address = {Cham}, isbn = {9783032098443}, doi = {10.1007/978-3-032-09844-3_10}, pages = {99 -- 108}, abstract = {Following the explanation of the increasing importance of alternative backfill materials like TFSB, TFSB and their status in terms of science and technology are depicted. Selected results of the research project FW-ZFSV 4.0 are presented: computer-aided static calculation, in situ long term loading of district heating pipes in TFSB and sand, quality assurance and resource conservation. The conclusions provide an overall assessment of the use of TFSB in district heating pipe construction.}, language = {en} } @misc{Spirkl, author = {Spirkl, Florian}, title = {Untersuchungen und Analyse des Verhaltens von B{\"o}den und Boden-Bindemittel-Gemischen unter zyklischer Belastung}, pages = {32}, abstract = {W{\"a}hrend es zahlreiche Untersuchungen zum Verhalten von B{\"o}den unter zyklischen und dynamischen Belastungen gibt, gibt es nur wenige Ver{\"o}ffentlichungen zu zyklischen Belastungen an Bindemittel-stabilisierter B{\"o}den. Dabei werden diese Boden-Bindemittel-Gemische (BBG) vielseitig eingesetzt (z.B. qualifizierte Bodenverfestigung, Bodenmischs{\"a}ulen, zeitweise fließf{\"a}hige Erdbaustoffe). Die durchgef{\"u}hrten Versuche zielen darauf ab, ein tiefergehendes Verst{\"a}ndnis f{\"u}r das Materialverhalten von BBG zu gewinnen. Hierf{\"u}r wurden an verschiedenen Mischungen zyklische Versuche mit variierenden Spannungsamplituden durchgef{\"u}hrt. Die bisher durchgef{\"u}hrten Versuche untersuchen sowohl Zyklen im niedrigen Lastbereich als auch im hohen Lastbereich nahe der einaxialen Druckfestigkeit. G{\"a}ngige Modelle zur Beschreibung des Setzungsverhaltens in Folge von zyklischer Einwirkung werden vorgestellt und mit den Ergebnissen f{\"u}r BBG verglichen.}, language = {de} } @article{KranzWagnerPointneretal., author = {Kranz, Michael and Wagner, Maria Stella and Pointner, Daniel and Haus, Moritz and Lubnow, Matthias and Lehle, Karla and Krenkel, Lars}, title = {Polymer embedding of membrane lungs for histological investigations of intra-device clot formation}, series = {Cardiovascular Medicine}, volume = {13}, journal = {Cardiovascular Medicine}, publisher = {Frontiers}, address = {Lausanne}, doi = {10.3389/fcvm.2026.1650978}, pages = {21}, abstract = {Extracorporeal membrane oxygenation (ECMO) is an invasive but potentially lifesaving treatment option for severe cardiac or respiratory failure. Despite its beneficial effect, coagulation-related complications, mainly due to clot formation, excessive bleeding and the accumulation of deposits in the membrane lung (ML) remain common, causing higher mortality. In this context, the formation of clots and other deposits in the ML is of particular interest. Previous histological examinations of the polymethylpentene fiber mats inside the ML could only be performed in a top view, prohibiting valid quantification and examination of the multi-layered deposits or fiber mat spanning structures. Our objective was the establishment of a polymer embedding to increase the mechanical stability of the deposits and thus enable cross-sectional microtome cutting through the ML hollow-fibers. Clinically used MLs (PLS, Getinge, Rastatt, Germany) were stabilized with a polymer resin (HistoCURE 8100). Specimens were cut out of the embedded MLs and microtome sections with a thickness of 10 µm were performed. In addition to standard histological staining with hematoxylin-eosin (HE) and Pappenheim (May-Grunwald-Giemsa), fluorescence DNA staining for nucleated cells with 4′,6-diamidino-2-phenylindole (DAPI) and SYTOX™ Green as well as immunohistochemical and immunofluorescence staining for the lysosomal enzyme myeloperoxidase (MPO) and von Willebrand factor (vWF) were established. The protocol provides a method for large volume embedding (400 mL). The cellular and extracellular deposits were securely fixed by the polymer scaffold allowing the examination of clots in MLs in native position which was not possible with conventional paraffin embedding. Multi-layered deposits and fiber mat spanning structures are no longer disrupted during specimen extraction and can now be quantified. Staining with HE, Pappenheim, DAPI, SYTOX™ Green, MPO, and vWF was successfully tested with this protocol. This method may be the foundation for new insights into the complex clotting phenomena observed in MLs}, language = {en} } @misc{BesserGiraudHammonetal., author = {Besser, Elisabeth and Giraud, Jara and Hammon, Michaela and Mayer, Josefa and Schiener, Sophie and Mertens, Johannis and Pfingsten, Andrea}, title = {Kulturell adaptierte Schmerzgeschichte f{\"u}r die PNE im deutschsprachigen Raum}, series = {9. Forschungssymposium Physiotherapie (FSPT), 2025, Bremen}, volume = {21}, journal = {9. Forschungssymposium Physiotherapie (FSPT), 2025, Bremen}, number = {S02}, publisher = {Thieme}, address = {Stuttgart}, doi = {10.1055/s-0045-1811330}, abstract = {Einleitung Pain Neuroscience Education (PNE) ist eine Aufkl{\"a}rungsstrategie, welche das Ziel hat, Schmerzpatient*innen neurophysiologische und -biologische Vorg{\"a}nge im K{\"o}rper mittels Metaphern und Geschichten zu vermitteln. Der Wissenszugewinn {\"u}ber schmerzphysiologische Prozesse kann - insbesondere bei chronischen Schmerzpatient*innen - psychosoziale Symptome wie Bewegungsangst und Katastrophisierung von Schmerz positiv beeinflussen und zu einem Umdenken im Umgang mit Schmerz anregen. Trotz zahlreicher PNE-Studien wird die vermutlich entscheidende Anpassung von Schmerzgeschichten an den kulturellen Hintergrund der Betroffenen bis jetzt kaum ber{\"u}cksichtigt. Ziel des Projekts war es, eine f{\"u}r die deutsche Kultur angepasste Schmerzgeschichte nach dem Vorbild des amerikanischen „Why You Hurt"- Konzepts zu entwickeln und diese hinsichtlich ihrer Verst{\"a}ndlichkeit und Anwendbarkeit zu {\"u}berpr{\"u}fen Material und Methodik Auf Grundlage der Literatur sowie eines fachlichen Austauschs mit dem PNE-Experten Prof. Dr. Emilio „Louie" Puentedura wurde eine metaphorische, kulturell adaptierte Schmerzgeschichte entwickelt und grafisch aufbereitet. Die Datenerhebung erfolgte durch leitfadengest{\"u}tzte Interviews mit jeweils drei Therapeut*innen und Patient*innen. Die Auswertung erfolgte mittels qualitativer Inhaltsanalyse in MAXQDA. Ergebnisse Die Teilnehmenden beschrieben die Geschichte als „leicht verst{\"a}ndlich, nachvollziehbar und anschaulich". Die Kombination aus Erz{\"a}hlung und graphischer Darstellung erleichterte das Verst{\"a}ndnis der physiologischen Vorg{\"a}nge. Therapeut*innen reagierten positiv auf die Umsetzbarkeit und signalisierten Bereitschaft zur k{\"u}nftigen Anwendung, bevorzugt mit geringem organisatorischem Aufwand - etwa in Form von Karten mit variierenden Inhalten oder einer App-Version. Zus{\"a}tzlich wurde erw{\"a}hnt, die Geschichte nur bei Kindern anzuwenden. Zusammenfassung Die erstellte Schmerzgeschichte wurde von den Befragten als verst{\"a}ndlich und umsetzbar bewertet. Zuk{\"u}nftig sollten weitere quantitative Studien mit gr{\"o}ßerer Teilnehmerzahl durchgef{\"u}hrt werden, um belastbarere Aussagen bez{\"u}glich der Anwendbarkeit und des Verst{\"a}ndnisses von Schmerzgeschichten in der Gesamtpopulation treffen zu k{\"o}nnen. Neben der kulturellen Adaptation k{\"o}nnte auch die Anpassung an das Bildungsniveau sowie das Alter der Betroffenen und eine m{\"o}gliche PNE-App f{\"u}r zuk{\"u}nftige Untersuchungen relevant sein.}, subject = {PNE}, language = {de} } @techreport{SchwarzBockWeiss, author = {Schwarz, Philipp and Bock, Sebastian and Weiß, Martin}, title = {Abschlussbericht Projekt LeaP - Learning Poses : Posenerkennung mit Neuronalen Netzen}, address = {Regensburg}, doi = {10.35096/othr/pub-8851}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-88514}, pages = {45}, abstract = {Die Sch{\"a}tzung der 6D-Pose bekannter Objekte findet Anwendungen in der Robotik, der Luft- und Raumfahrtsteuerung und automatisierten Produktionsumgebungen. Es ist nach wie vor g{\"a}ngige Praxis, klassische Bildverarbeitungsmethoden zu verwenden, um eine hohe Pr{\"a}zision zu erreichen. Diese Methoden erfordern jedoch eine manuelle Parametrisierung der verwendeten Erkennungswerkzeuge f{\"u}r jedes einzelne Objekt. Dies wirft die Frage auf, ob maschinelle Lerntechniken, insb. convolutional neural networks, Netzwerke, so trainiert werden k{\"o}nnen, dass sie die in der Industrie geforderte Pr{\"a}zision ohne individuelle Programmierung erreichen k{\"o}nnen. Dar{\"u}ber sollen in Produktionsumgebungen Umwelteinfl{\"u}sse wie Lichtverh{\"a}ltnisse minimiert werden. Es werden verschiedene Netzstrukturen entwickelt und auf ihre Leistung bei diesem Szenario untersucht, mit 1 bis 6 Freiheitsgraden in der Aufgabenstellung und einer oder mehreren Kameras. Zus{\"a}tzlich wird ein Ansatz mit reinforcement learning entwickelt und untersucht.}, language = {de} } @techreport{Schultz, author = {Schultz, Maximilian}, title = {1.Bericht f{\"u}r das Regensburg Center of Health Sciences and Technology (RCHST)}, volume = {2024}, publisher = {OTH Regensburg}, address = {Regensburg}, doi = {10.35096/othr/pub-7312}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-73125}, pages = {17}, abstract = {Der vorliegende Bericht zeigt den aktuellen Stand des Projekts „K{\"u}nstliche Intelligenz f{\"u}r Nichtregierungsorganisationen (KINiro) - Bedarf, Akzeptanz und Umsetzungsm{\"o}glichkeiten" an der OTH Regensburg am Institut f{\"u}r Sozialforschung und Technikfolgenabsch{\"a}tzung (IST). Im Projektbericht wird das Projekt KINiro mit besonderem Blick auf die Erkenntnisse und T{\"a}tigkeiten im Gesundheitswesen aufgezeigt. Das Projekt KINiro wird mit Laufzeit Januar 2023 bis Dezember 2025 durch das Bundesministerium f{\"u}r Familie, Senioren, Frauen und Jugend (BMFSFJ) gef{\"o}rdert. Eine zus{\"a}tzliche Unterst{\"u}tzung bietet das Regensburg Center of Health Sciences and Technology (RCHST)}, language = {de} } @article{QiaoGradNonn, author = {Qiao, Yu and Grad, Marius and Nonn, Aida}, title = {Toward an Efficient and Robust Process-Structure Prediction Framework for Filigree L-PBF 316L Stainless Steel Structures}, series = {Metals}, volume = {15}, journal = {Metals}, number = {7}, publisher = {MDPI}, issn = {2075-4701}, doi = {10.3390/met15070812}, pages = {22}, abstract = {Additive manufacturing (AM), particularly laser powder bed fusion (L-PBF), provides unmatched design flexibility for creating intricate steel structures with minimal post-processing. However, adopting L-PBF for high-performance applications is difficult due to the challenge of predicting microstructure evolution. This is because the process is sensitive to many parameters and has a complex thermal history. Thin-walled geometries present an added challenge because their dimensions often approach the scale of individual grains. Thus, microstructure becomes a critical factor in the overall integrity of the component. This study focuses on applying cellular automata (CA) modeling to establish robust and efficient process-structure relationships in L-PBF of 316L stainless steel. The CA framework simulates solidification-driven grain evolution and texture development across various processing conditions. Model predictions are evaluated against experimental electron backscatter diffraction (EBSD) data, with additional quantitative comparisons based on texture and morphology metrics. The results demonstrate that CA simulations calibrated with relevant process parameters can effectively reproduce key microstructural features, including grain size distributions, aspect ratios, and texture components, observed in thin-walled L-PBF structures. This work highlights the strengths and limitations of CA-based modeling and supports its role in reliably designing and optimizing complex L-PBF components.}, language = {en} } @inproceedings{SchwaegerlUhrigWestfechtel, author = {Schw{\"a}gerl, Felix and Uhrig, Sabrina and Westfechtel, Bernhard}, title = {A Graph-based Algorithm for Three-way Merging of Ordered Collections in EMF Models}, series = {Science of Computer Programming}, volume = {113}, booktitle = {Science of Computer Programming}, number = {Part 1}, doi = {10.1016/j.scico.2015.02.008}, pages = {51 -- 81}, abstract = {In EMF models, ordered collections appear as the values of multi-valued structural features. Traditional, text-based version control systems do not sufficiently support three-way merging of ordered collections inside EMF models since they cannot guarantee a consistent result. The operation three-way merging is defined as follows: based on a common base version b, two alternative versions and were developed by copying and modifying the base version. To reconcile these changes, a merged version m is to be created as a common successor of and . In this paper, we present a graph algorithm to solve the problem of three-way merging of ordered collections in EMF models. Each version of a collection can be represented by means of a linearly ordered graph. To create the merged version, these graphs are combined to a merged collection graph using set formula. To create the merged collection, a generalized topological sort is performed on the merged collection graph. Conflicts occur in case the order of elements cannot be deduced automatically; these conflicts are resolved either interactively or by default rules. We have implemented the merge algorithm in our tool BTMerge, which performs a consistency-preserving three-way merge of versions of EMF models being instances of arbitrary Ecore models. Our implementation relies on an alternative form of representing multiple versions of a collection, namely a versioned collection graph which forms a superimposition of collection versions. The algorithm presented here is purely state-based. Matching and merging of collections are clearly separated sub-problems. Insertions and deletions performed on the elements of the collection are propagated into the merged version in a consistent way. Our algorithm makes only minimal assumptions with regard to the underlying product model and thus may be applied to ordered collections inside plain text or XML files. By taking arbitrary move operations into account, the algorithm considerably goes beyond the functionality of contemporary merge tools which cannot adequately handle move operations.}, language = {en} } @inproceedings{BuchmannSchwaegerl, author = {Buchmann, Thomas and Schw{\"a}gerl, Felix}, title = {Breaking the Boundaries of Meta Models and Preventing Information Loss in Model-Driven Software Product Lines}, series = {Proceedings of the 11th International Conference on Evaluation of Novel Software Approaches to Software Engineering, Vol 1, 2016, Rome, Italy}, booktitle = {Proceedings of the 11th International Conference on Evaluation of Novel Software Approaches to Software Engineering, Vol 1, 2016, Rome, Italy}, publisher = {SCITEPRESS - Science and and Technology Publications}, doi = {10.5220/0005789100730083}, pages = {83}, abstract = {Model-driven software product line engineering is an integrating discipline for which tool support has become available recently. However, existing tools are still immature and have several weaknesses. Among others, limitations in variability, caused by meta model restrictions, and unintended information loss are not addressed. In this paper, we present two conceptual extensions to model-driven product line engineering based on negative variability, being alternative mappings and surrogates. Alternative mappings allow for unconstrained variability, mitigating meta model restrictions by virtually extending the underlying multi-variant domain model. Surrogates prevent unintended information loss during product derivation based on a contextsensitive product analysis, which can be controlled by a declarative OCL-based language. Both extensions have been implemented in FAMILE, a model-driven product line tool that is based on EMF, provides dedicated consistency repair mechanisms, and completely automates application engineering. The added value of alternative mappings and surrogates is demonstrated by a running example.}, language = {en} } @inproceedings{SchwaegerlUhrigWestfechtel, author = {Schw{\"a}gerl, Felix and Uhrig, Sabrina and Westfechtel, Bernhard}, title = {Model-based tool support for consistent three-way merging of EMF models}, series = {ACME '13, Proceedings of the workshop on ACadeMics Tooling with Eclipse}, booktitle = {ACME '13, Proceedings of the workshop on ACadeMics Tooling with Eclipse}, publisher = {ACM}, address = {New York, NY, USA}, doi = {10.1145/2491279.2491281}, abstract = {Inadequate version control has been identified as a major obstacle to the application of model-driven software engineering. In particular, sophisticated support for merging model versions is urgently needed. We present a tool for merging of EMF models which may be applied to instances of arbitrary Ecore models. The tool advances the state of the art by guaranteeing a consistent merge result. Furthermore, it detects and resolves not only context-free, but also context-sensitive conflicts. Our merge tool is model-based; it relies on EMF for its implementation. Initial experiences gained from its application confirm that the merge tool operates both accurately and efficiently.}, language = {en} } @unpublished{Chow, author = {Chow, Rosan}, title = {Narcissistic and Embodied Human-Centered-Design}, isbn = {978-3-0356-3012-1}, doi = {10.35096/othr/pub-8755}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-87557}, pages = {5}, abstract = {In recent years, there have been calls to replace Human-Centered-Design (HCD) with More-Than-Human-Design (MTHD). The proponents of MTHD dismiss HCD for various reasons; however, the fact that they use the same title, terms and phrases such as posthuman, decenter human, anti-anthropocentric; systematically or not, coherently or not, together they create a strong sense that HCD is pass{\´e} and must be left behind. Anthropocentrism has gotten a lot of beatings from multiple quarters to the extent that the term carries now a negative connotation. This negative mood seems to get carried away and over to the criticisms of HCD as human-centered is synonymous with anthropocentric. My contribution is to point out, while anthropocentrism is a position of value; it might also be understood as an inescapable condition. Before the MTHD movement sweeps away indiscriminately all HCD, a more careful look is in order.}, subject = {Design, Human-Centered, Posthuman, Anthropocentrism}, language = {en} } @inproceedings{SachenbacherLeucker, author = {Sachenbacher, Martin and Leucker, Martin}, title = {Towards Monitoring and Diagnosis of Quantum Digital Twins}, series = {Lecture Notes in Informatics (LNI)}, volume = {P-366}, booktitle = {Lecture Notes in Informatics (LNI)}, publisher = {Gesellschaft f{\"u}r Informatik e.V.}, address = {Bonn}, doi = {10.18420/INF2025_159}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-87546}, pages = {1767 -- 1772}, abstract = {As access to larger-scale quantum computers is still limited, it is useful to simulate quantum algorithms on specialized programmable logic hardware such as FPGAs to exploit analogies between quantum and digital circuits, and allow for analysis and efficient debugging of quantum programs. Such simulations can be viewed as digital representations of actual physical systems, commonly referred to as Digital Twins (DTs). In previous work, we applied formal methods from runtime verification to synthesize monitors capable of real-time analysis of conventional DTs. Specifically, these monitors supervise alignment with their physical counterparts and support model-based diagnosis to identify potential root causes of observed deviations. In this short paper, we present ongoing work aimed at adapting and extending our approach to hardware-based simulation and analysis of quantum software on FPGAs, with the objective of improving both accuracy and resilience.}, language = {en} }