TY - THES A1 - Thumann, Maria T1 - Anpassung der Verarbeitungseigenschaften von Frischbetonmischungen für die Entwicklung von Spritzbetonen mit reduziertem Versinterungspotential N2 - In nicht druckwasserhaltenden Tunnelbauwerken wird das Bergwasser über Entwässerungs� systeme gesammelt und aus dem Bauwerk geleitet. Versinterungen der Drainageleitungen des sekundären Entwässerungssystems führen zu Querschnittsverminderungen und -verschlüssen, wodurch die gezielte Ableitung des Bergwassers aus dem Bauwerk gestört wird. Zur Vermeidung von Schäden am Tunnelbauwerk oder von Wassereintritten in den Tunnel, aufgrund eines Anstiegs des Bergwasserdrucks hinter der Innenschale, sind regelmäßige Reinigungsarbeiten erforderlich. Die Reinigung der Drainageleitungen ist häufig sehr kosten� intensiv und führt zu Verkehrsbehinderungen in den Tunneln. Die Entstehung von Versinterungen wird durch die chemisch-physikalische Zusammensetzung des Bergwassers, die Umgebungsbedingungen im Bereich des Tunnels, die Ausführung des Entwässerungssystems und den Kontakt des Bergwassers mit zementgebundenen Materialien, z. B. dem Spritzbeton, beeinflusst. Ein Ansatz, um die Entstehung von Versinterungen zu reduzieren, ist die Optimierung der Spritzbetonrezeptur. Die Änderung der Rezeptur� zusammensetzung beeinflusst aber auch die Verarbeitbarkeit der Frischbetonmischung, die Frühfestigkeitsentwicklung des jungen Spritzbetons und die Festigkeitsentwicklung des Spritzbetons. Die Versuchsergebnisse von Auslaugversuchen mit Mörtel-, Spritzmörtel- und Spritzbeton� proben im Rahmen dieser Arbeit belegen, dass das Versinterungspotential durch eine Reduzierung des Klinkergehalts im Bindemittel, den Einsatz von puzzolanischen oder latent� hydraulischen Zusatzstoffen und eine geringe Porosität reduziert wird. Die Änderungen der Bindemittelzusammensetzung des Spritzbetons haben Auswirkungen auf den Klinkergehalt, den Wasserbedarf und den Leimgehalt und damit auch auf die Verarbeitbarkeit der Frischbetonmischung. Für die Beurteilung der Verarbeitbarkeit, v. a. der Pumpbarkeit, von Frischbetonen und Frischbetonmischungen wurden Konsistenzprüfverfahren, rheologische Prüfverfahren und Prüfverfahren zur Beurteilung der Stabilität ausgewählt. Ihre Eignung und Aussagekraft wurde bei Pumpversuchen mit einer mobilen Spritzbetonmaschine verifiziert. Für die Pumpbarkeit von Frischbetonmischungen ist zum einen ein ausreichendes Leimvolumen zur Ausbildung einer Gleitschicht an der Rohrwandung erforderlich und zum anderen müssen die Mischungen unter Druck ausreichend stabil bleiben, damit während des Pumpens keine Blockaden in den Förderleitungen auftreten. Sofern diese Aspekte bei den entwickelten Rezepturen erfüllt sind, ist eine ausreichende Verarbeitbarkeit der Frischbetonmischungen erreicht. Darüber hinaus konnten die Anforderungen an die Frühfestigkeitsentwicklung und die 28 d Druckfestigkeit der Spritzbetone mit optimierten Mischungen erfüllt werden. Im Rahmen dieser Arbeit wurde gezeigt, welche Aspekte bei der Entwicklung von Spritzbetonen mit einem reduzierten Versinterungspotential berücksichtigt werden müssen, um auch die genannten baupraktischen Anforderungen zu erfüllen. N2 - In double-shell tunnel linings, the construction of ‚umbrella’ insulations helps preventing water ingress: depressurized ground water is led to drainage pipes, relieving the tunnel lining from water pressure. However, these solutions are associated in many cases with sintering (precipitation of carbonates) in the drainage system. Over time, the drainage pipes get clogged and the water cannot flow off. Subsequently, the water pressure increases and the tunnel may be damaged. The cleaning of the drainage pipes during operation of traffic tunnels is possible, but very costly and time consuming. To minimize the tunnel maintenance work, it is crucial to reduce such precipitations to a minimum. The parameters that influence the sintering process are (i) the chemical composition of the ground water, (ii) the environmental conditions, (iii) the design of the drainage system, (iv) and the contact of the water with cementitious materials, e.g. the sprayed concrete. In fact, the mix design of the sprayed concrete can be adapted to develop mixes with low sintering potential. To achieve this purpose special care has to be taken to avoid compromising the workability of the wet mix, the early strength development of the young sprayed concrete and the strength development of the hardened sprayed concrete. Results of leaching tests show that the calcium released from mortar, sprayed mortar and sprayed concrete samples can be reduced by lowering the clinker content of the binder, by adding supplementary cementitious materials, or by producing a dense matrix. Changes in the binder composition influence the clinker content in the binder, the water demand, the paste content, and thus the workability of the wet-mixes. The workability, and specifically the pumpability, of the wet-mixes was characterised using different test methods. The reliability of the selected test-methods was verified in pumping tests with a spraying machine. Results of lab tests and pumping tests show that the pumpability of wet-mixes requires, on the one hand, sufficient paste volume to form a lubricating layer on the pipe wall and, on the other hand, that the concrete remains stable even under pressure to avoid blockages in the conveying pipe. In addition to the requirements concerning the workability of the wet-mix, the requirements for early strength development and 28 day compressive strength of the sprayed concrete must be met. This work describes the various aspects that have to be taken into account when designing new mixes for sprayed concrete with low sintering potential, fulfilling at the same time the corresponding requirements for workability and hardened concrete properties. Y1 - 2019 UR - https://www.baustoffe.ruhr-uni-bochum.de/bs/mam/content/dissertation_maria_thumann.pdf CY - Regensburg ER - TY - GEN A1 - Grabinger, Lisa T1 - Data of a systematic literature research on eye tracking in software engineering [Data set] N2 - How did the data collection work? By systematic research in the IEEE Xplore and ACM digital libraries we extracted 125 papers. Further details on the procedure can be found in the journal paper. What data is provided? In this repository you can find the extracted data, i.e., file data.xlsx. Y1 - 2024 U6 - https://doi.org/10.5281/zenodo.11279180 N1 - Im Zusammenhang mit folgender Publikation: Grabinger, L., Hauser, F., Wolff, C. et al. On Eye Tracking in Software Engineering. SN COMPUT. SCI. 5, 729 (2024). https://doi.org/10.1007/s42979-024-03045-3 ER - TY - GEN A1 - Glavan, Gašper A1 - Belyaeva, Inna A. A1 - Shamonin (Chamonine), Mikhail T1 - Transient Response of Macroscopic Deformation of Magnetoactive Elastomeric Cylinders in Uniform Magnetic Fields [Data set] Y1 - 2024 U6 - https://doi.org/10.5281/zenodo.10679499 N1 - This is the data set for all the figures in the paper with the title: "Transient Response of Macroscopic Deformation of Magnetoactive Elastomeric Cylinders in Uniform Magnetic Fields" published in the Polymers journal (doi:10.3390/polym16050586). ER - TY - GEN A1 - Glavan, Gašper A1 - Belyaeva, Inna A. A1 - Shamonin (Chamonine), Mikhail A1 - Ruwisch, Kevin A1 - Wollschläger, Joachim T1 - Magnetoelectric Response of Laminated Cantilevers Comprising a Magnetoactive Elastomer and a Piezoelectric Polymer, in Pulsed Uniform Magnetic Fields [Data set] Y1 - 2025 U6 - https://doi.org/10.5281/zenodo.14652152 N1 - This is the data set for all the figures in the paper with the title: "Magnetoelectric Response of Laminated Cantilevers Comprising a Magnetoactive Elastomer and a Piezoelectric Polymer, in Pulsed Uniform Magnetic Fields" published in the Sensors journal (doi:10.3390/s21196390). ER - TY - CHAP A1 - Deutel, Mark A1 - Mallah, Maen A1 - Wissing, Julio A1 - Scheele, Stephan ED - Vermesan, Ovidiu ED - Pagani, Alain ED - Meloni, Paolo T1 - Recent Trends in Edge AI: Efficient Design, Training and Deployment of Machine Learning Models T2 - Charting the Intelligence Frontiers – Edge AI Systems Nexus N2 - With a rising demand for ubiquitous smart systems, processing and interpreting large quantities of data generated on the edge at a high velocity is becoming an increasingly important challenge. Machine learning (ML) models such as Deep Neural Networks (DNNs) are an essential tool of today’s artificial intelligence due to their ability to make accurate predictions given complex tasks and environments. However, Deep Learning is computationally complex and energy intensive. This seems to contradict the characteristics of many edge devices, which have only limited memory, computational resources, and energy budget available. To overcome this challenge, an efficient ML model design is crucial that incorporates available optimization techniques from hardware, software, and methodological perspective to enable energy-efficient deployment and operation on the edge. This work comprehensively summarizes recent techniques for training, optimizing, and deploying ML models targeting edge devices. We discuss different strategies for finding deployable ML models, scalable DNN architectures, neural architecture search, and multi-objective optimization approaches, to enable feasible trade-offs considering available resources and latency. Furthermore, we give insight into DNN compression methods such 182as quantization and pruning. We conclude by investigating different forms of cascaded processing, from simple multi-level approaches to highly branched compute graphs and early-exit DNNs. Y1 - 2026 SN - 9788743808862 U6 - https://doi.org/10.1201/9788743808862-9 SP - 181 EP - 220 PB - River Publishers CY - New York ER - TY - JOUR A1 - Kuettner, Andreas A1 - Fischer, Samuel A1 - Laumer, Tobias T1 - Mechanical and structural characterization of heat-staked parts realized by selective laser sintering of polyamide 12 JF - The International Journal of Advanced Manufacturing Technology N2 - Heat staking is a joining process in which thermoplastic pins are formed by heat and pressure in a form-fitting and insoluble way. This study evaluates the mechanical performance and microstructure of selective laser sintered (SLS) polyamide 12 (PA 12) components before and after heat staking, compared with conventionally turned reference specimens. The components were characterized using tensile tests, micrographs, microscopy, and micro-CT measurements. For the tests, the forces and temperatures during heat staking were varied to determine the best process parameters. Tensile tests revealed that SLS joints achieved strengths of up to 33.6 MPa, approaching the 39.9 MPa of the turned references. Microstructural analysis showed a marked reduction in porosity due to heat staking. Porosity decreased from 3.9% to 1.56% at a staking force of 300 N and from 4.29% to 0.81% at 1000 N, highlighting the beneficial effect of increased force. These results demonstrate that heat staking parameters significantly influence local densification and mechanical performance, and that, under suitable conditions, SLS components can achieve joint strengths comparable to conventionally manufactured parts. The study shows that the heat staking process parameters have a significant influence on the local microstructure and thus on the mechanical performance and provides a basis for optimizing SLS components for new heat staking applications. KW - Additive manufacturing KW - Heat staking KW - Material qualification KW - Polyamid 12 (PA) KW - Selective laser sintering (SLS) Y1 - 2026 U6 - https://doi.org/10.1007/s00170-025-17319-4 PB - Springer ER - TY - JOUR A1 - Zürner, Christian T1 - Von der „Ästhetischen“ zur „Kulturellen Bildung“ – (heimlicher) Verlust eines kritischen Selbstverständnisses JF - Pädagogische Rundschau Y1 - 2015 VL - 69 IS - 1 SP - 75 EP - 89 PB - Lang ER - TY - GEN A1 - Kriegl, Raphael T1 - Microstructured Magnetoactive Elastomers for Switchable Wettability [Data set] Y1 - 2022 U6 - https://doi.org/10.5281/zenodo.13124555 N1 - Data for the Figures in Microstructured Magnetoactive Elastomers for Switchable Wettability https://doi.org/10.3390/polym14183883 ER - TY - GEN A1 - Grabinger, Lisa A1 - Hauser, Florian A1 - Mottok, Jürgen T1 - Study: Notation of Causal Graphs [Data set] N2 - This repository contains the material and obtained data of an eye tracking study on the topic "Notation of Causal Graphs". Y1 - 2022 U6 - https://doi.org/10.5281/zenodo.7241158 ER - TY - GEN A1 - Grabinger, Lisa A1 - Hauser, Florian A1 - Mottok, Jürgen T1 - Study: Layout of Causal Graphs [Data set] N2 - This repository contains the material and obtained data of an eye tracking study on the topic "Layout of Causal Graphs". Y1 - 2022 U6 - https://doi.org/10.5281/zenodo.7241097 ER - TY - GEN A1 - Grabinger, Lisa A1 - Homann, Alexander A1 - Hauser, Florian A1 - Mottok, Jürgen T1 - Study: MISRA C coding guidelines [Data set] N2 - This repository contains the material and obtained data of an eye tracking study on the topic "MISRA C coding guidelines". Y1 - 2023 U6 - https://doi.org/10.5281/zenodo.7898606 ER - TY - GEN A1 - Moser, Elisabeth A1 - Eberhardt, Matthias A1 - Meyer, Selina A1 - Schmidhuber, Maximilian A1 - Ketterer, Daniel T1 - ARGO ship classification dataset [Data set] N2 - The ARGO ship classification dataset holds 1750 labelled images from PlanetScope-4-Band satelites. The dataset creation process and results on the dataset are published in the demo paper: {CITE} The imagery is provided as numpy binary files. All image data is licensed by Planet Labs PBC. The channel ordering is BGRN. The dataset is provided in two folders named "ship" and "non_ship". Those folders correspond to the original labels created during automated dataset creation. The files are numbered. Two additional .csv files are provided. The shipsAIS_2017_Zone17.csv file holds the AIS information on the imagery contained in the ship folder. The data was retrieved from marinecadastre.gov. During the experiments errors in the automatically created dataset emerged which are further described in the paper. The manual relabelling is supplied in the corrected_labels.csv file. Y1 - 2022 U6 - https://doi.org/10.5281/zenodo.6058710 ER - TY - GEN A1 - Rahim, Stefan A1 - Schumm, Leon T1 - Weather Data Cutouts for the Wasserstoffatlas (Hydrogen Map) [Data set] N2 - The cutouts are required to calculate the solar PV and wind onshore feed-in profiles of the Wasserstoffatlas. The provided cutouts are spatiotemporal subsets of the European weather data from the ECMWF ERA5 reanalysis dataset and the CMSAF SARAH-2 solar surface radiation dataset for the year 2013. They have been prepared by and are for use with the atlite tool (https://atlite.readthedocs.io/). ECMWF ERA5 Source: https://cds.climate.copernicus.eu/cdsapp#!/dataset/reanalysis-era5-single-levels?tab=overview Terms of Use: https://cds.climate.copernicus.eu/api/v2/terms/static/20180314_Copernicus_License_V1.1.pdf CMSAF SARAH-2 Pfeifroth, Uwe; Kothe, Steffen; Müller, Richard; Trentmann, Jörg; Hollmann, Rainer; Fuchs, Petra; Werscheck, Martin (2017): Surface Radiation Data Set - Heliosat (SARAH) - Edition 2, Satellite Application Facility on Climate Monitoring, DOI:10.5676/EUM_SAF_CM/SARAH/V002, https://doi.org/10.5676/EUM_SAF_CM/SARAH/V002 Terms of Use: https://www.eumetsat.int/cs/idcplg?IdcService=GET_FILE&dDocName=pdf_leg_data_policy&allowInterrupt=1&noSaveAs=1&RevisionSelectionMethod=LatestReleased Y1 - 2023 U6 - https://doi.org/10.5281/zenodo.8135586 ER - TY - GEN A1 - Bittner, Dominik A1 - Ezer, Timur A1 - Grabinger, Lisa A1 - Hauser, Florian A1 - Mottok, Jürgen T1 - Eye Tracking based Learning Style Identification for Learning Management Systems [Data set] N2 - In recent years, universities have been faced with increasing numbers of students dropping out. This is partly due to the fact that students are limited in their ability to explore individual learning paths through different course materials. However, a promising remedy to this issue is the implementation of adaptive learning management systems. These systems recommend customised learning paths to students - based on their individual learning styles. Learning styles are commonly classified using questionnaires and learning analytics, but both methods are prone to error. Questionnaires may yield superficial responses due to time constraints or lack of motivation, while learning analytics ignore offline learning behaviour. To address these limitations, this study aims to integrating Eye Tracking for a more accurate classification of students' learning styles. Ultimately, this comprehensive approach could not only open up a deeper understanding of subconscious processes, but also provide valuable insights into students' unique learning preferences. Y1 - 2023 U6 - https://doi.org/10.5281/zenodo.8349468 N1 - Related works: Is new version of publication: 10.1145/3593663.3593680 (DOI) Is published in publication: 10.21125/iceri.2023.1291 (DOI) ER - TY - GEN A1 - Staufer, Susanne T1 - Persistence of Learning Style, Learning Strategy, and Personality Traits [Data set] N2 - This dataset contains the result of the survey to learning styles, learning strategies, and personality traits. The survey was executed in winter term 2023/24 and summer term 2023 in a German university (OTH Regensburg) during the course "Software Engineering". Examined questionnaires are ILS (learning styles), LIST-K (learning strategies), and BFI-10 (personality traits). The same three questionnaires were asked at two different survey periods three to four months apart while each survey period lasts one to two weeks. Pretest data were examined at the start of the term, while posttest data at the end. Y1 - 2024 U6 - https://doi.org/10.5281/zenodo.12743866 ER - TY - GEN A1 - Bugert, Flemming T1 - Applying Ariadne: Dataset on Learning Styles and Moodle-Based Learning Paths [Data set] N2 - This dataset contains information queried from 22 students inside a Moodle based learning management system during the winter term 2023/24 at a German university. Abstract With the use of learning management systems students benefit from being recommended suitable learning elements based on their individual needs. In doing so, recommendation algorithms are applied which first query the student’s learning style. To improve the recommendation of learning elements a continuous analysis of the individual’s learning style is required. A frequent questionnaire assessment would however be too time consuming. Instead, in a prior study an algorithm has been designed to identify changes in learning styles from the student’s selection of learning elements. In this paper, we investigate the functionality of that algorithm by applying it on real student data. In particular, we test if the algorithm correctly indicates changes in learning styles. The utilised data is collected in our learning management system. To be precise, the data is obtained from 22 students enrolled in a software engineering course during the winter term of 2023/24. The data comprises two types of information for each student: 1) learning style collected at the start and end of the term, and 2) the user’s actual selection of learning elements inside the learning management system. The uniqueness of this study lies in the data and the evaluation strategy based on it. Having the learning style at the end of the semester period as ground truth allows us to test if the algorithm operates correctly with actual user data from our learning management system. The results validate the behaviour of our algorithm, yet they strongly suggest the need for an adaptation. Further research is required on how to parameterise the underlying models. Y1 - 2024 U6 - https://doi.org/10.5281/zenodo.12594911 ER - TY - GEN A1 - Schmidbauer, Lukas A1 - Lobe, Elisabeth A1 - Schäfer, Ina A1 - Mauerer, Wolfgang T1 - It's Quick to be Square: Fast Quadratisation for Quantum Toolchains [Data set] N2 - Many of the envisioned use-cases for quantum computers involve optimisation processes. While there are many algorithmic primitives to perform the required calculations, all eventually lead to quantum gates operating on quantum bits, with an order as determined by the structure of the objective function and the properties of target hardware. When the structure of the problem representation is not aligned with structure and boundary conditions of the executing hardware, various overheads to degrade the computation may arise, possibly negating any possible quantum advantage. Therefore, automatic transformations of problem representations play an important role in quantum computing when descriptions (semi-)targeted at humans must be cast into forms that can be executed on quantum computers. Mathematically equivalent formulations are known to result in substantially different non-functional properties depending on hardware, algorithm and detail properties of the problem. Given the current state of noisy-intermediate scale quantum hardware (NISQ), these effects are considerably more pronounced than in classical computing. Likewise, efficiency of the transformation itself is relevant because possible quantum advantage may easily be eradicated by the overhead of transforming between representations. In this paper we consider a specific class of higher-level representations (polynomial unconstrained binary optimisation problems), and devise novel automatic transformation mechanisms into widely used quadratic unconstrained binary optimisation problems that substantially improve efficiency and versatility over the state of the art. We also identify what influence factors of lower-level details can be abstracted away in the transformation process, and which details must be made available to higher-level abstractions. Y1 - 2024 U6 - https://doi.org/10.5281/zenodo.14245588 N1 - Paper: 10.48550/arXiv.2411.19934 Software: https://github.com/lfd/Fast_Quadratisation ER - TY - GEN A1 - Birett, Falk A1 - Schumm, Leon A1 - Hofrichter, Andreas A1 - Heusgen, Valentin A1 - Rahim, Stefan T1 - Wasserstoffatlas Deutschland (Hydrogen Map) [Data set] N2 - Input files required for Hydrogen Map workflow in the project "Wasserstoffatlas Deutschland", funded by the BMBF. Y1 - 2025 U6 - https://doi.org/10.5281/zenodo.13960465 N1 - Further versions linked on Zenodo. ER - TY - GEN A1 - Stocker, Philipp A1 - Lehrer, Tobias T1 - Machine Learning Dataset of U-Channel Sheet Metal Geometry Representations with Supervision Information for Drawability Assessment and Part Segmentation [Data set] N2 - The dataset contains 2533 geometries from four different parametric CAD models sampled from the U-Channel python package. The representations include the original CAD geometries (.step), graph binaries (.bin), meshes (.off), and point clouds (.xyz). Additionally, we provide labels for supervised learning use cases of local and global drawability assessment and part segmentation (.json) for all representations. Custom label computation for drawability assessment is enabled by the provided strains.zip file, which contains minor and major true strains for the given meshes. For more details, refer to the associated publication. Y1 - 2025 U6 - https://doi.org/10.5281/zenodo.15327950 N1 - Zugehörige Publikation: Lehrer, Tobias and Stocker, Philipp and Duddeck, Fabian and Wagner, Marcus, UCSM: Dataset of U-Shaped Parametric CAD Geometries and Real-World Sheet Metal Meshes for Deep Drawing (May 21, 2025). https://doi.org/10.2139/ssrn.5268323 ER - TY - GEN A1 - Schmidbauer, Lukas A1 - Mauerer, Wolfgang T1 - SAT Strikes Back: Parameter and Path Relations in Quantum Toolchains [Data set] N2 - In the foreseeable future, toolchains for quantum computing should offer automatic means of transforming a high level problem formulation down to a hardware executable form. Thereby, it is crucial to find (multiple) transformation paths that are optimised for (hardware specific) metrics. We zoom into this pictured tree of transformations by focussing on k-SAT instances as input and their transformation to QUBO, while considering structure and characteristic metrics of input, intermediate and output representations. Our results can be used to rate valid paths of transformation in advance—also in automated (quantum) toolchains. We support the automation aspect by considering stability and therefore predictability of free parameters and transformation paths. Moreover, our findings can be used in the manifesting era of error correction (since considering structure in a high abstraction layer can benefit error correcting codes in layers below). We also show that current research is closely linked to quadratisation techniques and their mathematical foundation. Y1 - 2025 U6 - https://doi.org/10.5281/zenodo.15464391 N1 - Repositoriy URL: https://github.com/lfd/QSW25-SAT-Strikes-Back ER - TY - GEN A1 - Kriegl, Raphael T1 - Tunable rebound of millimeter-sized rigid balls by magnetic actuation of elastomer-based surface microstructures [Data set] Y1 - 2023 U6 - https://doi.org/10.5281/zenodo.10419411 N1 - This is the data used to plot Figures 7-10 of our paper "Tunable rebound of millimeter-sized rigid balls by magnetic actuation of elastomer-based surface microstructures" https://doi.org/10.1088/1361-665X/ad41a9 ER - TY - GEN A1 - Kriegl, Raphael T1 - Characterization of Wetting Properties of Magnetoactive Elastomer Surfaces [Data set] Y1 - 2023 U6 - https://doi.org/10.5281/zenodo.13124610 N1 - Data for the Figures in Characterization of Wetting Properties of Magnetoactive Elastomer Surfaces https://doi.org/10.1115/SMASIS2023-110998 ER - TY - GEN A1 - Kriegl, Raphael T1 - Preservation of wetting ridges using field-induced plasticity of magnetoactive elastomers (Version 3) [Data set] N2 - How to access data: html: Open in browser to view interactive figure pdf/png: Static figure, open with desired program json: Contains data for figures Open using Python pandas: import pandas as pd data = pd.read_json("filename") data then contains a pandas table. The cells in columns describing x,y data might contain entire arrays. Naming: Figure files are named after their respective ordering (i.e. figure1_*). Data and figure files are always named correspondingly. Zip archives (indiv_3D_*.zip) contain multiple additional figures, one for each surface measurement. There is a zip archive with the static renders and one with the interactive plots. Y1 - 2024 U6 - https://doi.org/10.5281/zenodo.14502155 ER - TY - GEN A1 - Mauerer, Wolfgang A1 - Joblin, Mitchell A1 - Tamburri, Damian Andrew A1 - Paradis, Carlos A1 - Kazman, Rick A1 - Apel, Sven T1 - In Search of Socio-Technical Congruence: A Large-Scale Longitudinal Study [Data set] Y1 - 2021 U6 - https://doi.org/10.5281/zenodo.4766388 N1 - Archive of the accompanying website including all datasets for "In Search of Socio-Technical Congruence: A Large-Scale Longitudinal Study" (IEEE Transactions on Software Engineering): https://doi.org/10.1109/TSE.2021.3082074 ER - TY - GEN A1 - Mauerer, Wolfgang A1 - Scherzinger, Stefanie T1 - Nullius in Verba - Reproducibility Tutorial [Data set] N2 - Reproduction package (docker image) for the ICDE 2021 tutorial "Nullius in Verba". Y1 - 2021 U6 - https://doi.org/10.5281/zenodo.4730023 N1 - In Verbindung mit dem Konferenzbeitrag: Nullius in Verba: Reproducibility for Database Systems Research, Revisited - https://doi.org/10.1109/ICDE51399.2021.00270 ER - TY - GEN A1 - Glavan, Gašper A1 - Belyaeva, Inna A. A1 - Shamonin (Chamonine), Mikhail T1 - On the Piezomagnetism of Magnetoactive Elastomeric Cylinders in Uniform Magnetic Fields: Height Modulation in the Vicinity of an Operating Point by Time-Harmonic Fields [Data set] Y1 - 2024 U6 - https://doi.org/10.5281/zenodo.13834054 N1 - This is the data set for all the figures in the paper with the title: "On the Piezomagnetism of Magnetoactive Elastomeric Cylinders in Uniform Magnetic Fields: Height Modulation in the Vicinity of an Operating Point by Time-Harmonic Fields" published in the Polymers journal (doi:10.3390/polym16192706). ER - TY - GEN A1 - Glavan, Gašper A1 - Belyaeva, Inna A. A1 - Shamonin (Chamonine), Mikhail T1 - Multiferroic Cantilevers Containing a Magnetoactive Elastomer: Magnetoelectric Response to Low-Frequency Magnetic Fields of Triangular and Sinusoidal Waveform [Data set] Y1 - 2025 U6 - https://doi.org/10.5281/zenodo.14651784 N1 - This is the data set for all the figures in the paper with the title: "Multiferroic Cantilevers Containing a Magnetoactive Elastomer: Magnetoelectric Response to Low-Frequency Magnetic Fields of Triangular and Sinusoidal Waveform" published in the Sensor journal (doi:10.3390/s22103791). ER - TY - CHAP A1 - Wagner, Bernd A1 - Hay, Stefan A1 - Neidhart, Thomas A1 - Spirkl, Florian A1 - Ried, Michael A1 - Zrenner, Louis A1 - Weidlich, Ingo A1 - Gabriel, Eugen A1 - Banning, Timo ED - Vanhoudt, Dirk T1 - TFSB as Bedding Material in District Heating Pipe Constructin - Scientifically Proven Long-Term Experience T2 - Proceedings of the 19th International Symposium on District Heating and Cooling; 2025, Genk (Belgium) N2 - 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. Y1 - 2026 SN - 9783032098443 U6 - https://doi.org/10.1007/978-3-032-09844-3_10 SP - 99 EP - 108 PB - Springer CY - Cham ER - TY - GEN A1 - Spirkl, Florian T1 - Untersuchungen und Analyse des Verhaltens von Böden und Boden-Bindemittel-Gemischen unter zyklischer Belastung N2 - Während es zahlreiche Untersuchungen zum Verhalten von Böden unter zyklischen und dynamischen Belastungen gibt, gibt es nur wenige Veröffentlichungen zu zyklischen Belastungen an Bindemittel-stabilisierter Böden. Dabei werden diese Boden-Bindemittel-Gemische (BBG) vielseitig eingesetzt (z.B. qualifizierte Bodenverfestigung, Bodenmischsäulen, zeitweise fließfähige Erdbaustoffe). Die durchgeführten Versuche zielen darauf ab, ein tiefergehendes Verständnis für das Materialverhalten von BBG zu gewinnen. Hierfür wurden an verschiedenen Mischungen zyklische Versuche mit variierenden Spannungsamplituden durchgeführt. Die bisher durchgeführten Versuche untersuchen sowohl Zyklen im niedrigen Lastbereich als auch im hohen Lastbereich nahe der einaxialen Druckfestigkeit. Gängige Modelle zur Beschreibung des Setzungsverhaltens in Folge von zyklischer Einwirkung werden vorgestellt und mit den Ergebnissen für BBG verglichen. Y1 - 2025 ER - TY - JOUR A1 - Kranz, Michael A1 - Wagner, Maria Stella A1 - Pointner, Daniel A1 - Haus, Moritz A1 - Lubnow, Matthias A1 - Lehle, Karla A1 - Krenkel, Lars T1 - Polymer embedding of membrane lungs for histological investigations of intra-device clot formation JF - Cardiovascular Medicine N2 - 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 KW - clot formation KW - ECMO KW - HistoCURE 8100 KW - histology KW - membrane lungs KW - polymer embedding KW - Technovit 8100 Y1 - 2026 U6 - https://doi.org/10.3389/fcvm.2026.1650978 VL - 13 PB - Frontiers CY - Lausanne ER - TY - GEN A1 - Besser, Elisabeth A1 - Giraud, Jara A1 - Hammon, Michaela A1 - Mayer, Josefa A1 - Schiener, Sophie A1 - Mertens, Johannis A1 - Pfingsten, Andrea T1 - Kulturell adaptierte Schmerzgeschichte für die PNE im deutschsprachigen Raum T2 - 9. Forschungssymposium Physiotherapie (FSPT), 2025, Bremen N2 - Einleitung Pain Neuroscience Education (PNE) ist eine Aufklärungsstrategie, welche das Ziel hat, Schmerzpatient*innen neurophysiologische und -biologische Vorgänge im Körper mittels Metaphern und Geschichten zu vermitteln. Der Wissenszugewinn über 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 berücksichtigt. Ziel des Projekts war es, eine für die deutsche Kultur angepasste Schmerzgeschichte nach dem Vorbild des amerikanischen „Why You Hurt“- Konzepts zu entwickeln und diese hinsichtlich ihrer Verständlichkeit und Anwendbarkeit zu überprüfen 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 leitfadengestützte 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 verständlich, nachvollziehbar und anschaulich“. Die Kombination aus Erzählung und graphischer Darstellung erleichterte das Verständnis der physiologischen Vorgänge. Therapeut*innen reagierten positiv auf die Umsetzbarkeit und signalisierten Bereitschaft zur künftigen Anwendung, bevorzugt mit geringem organisatorischem Aufwand – etwa in Form von Karten mit variierenden Inhalten oder einer App-Version. Zusätzlich wurde erwähnt, die Geschichte nur bei Kindern anzuwenden. Zusammenfassung Die erstellte Schmerzgeschichte wurde von den Befragten als verständlich und umsetzbar bewertet. Zukünftig sollten weitere quantitative Studien mit größerer Teilnehmerzahl durchgeführt werden, um belastbarere Aussagen bezüglich der Anwendbarkeit und des Verständnisses von Schmerzgeschichten in der Gesamtpopulation treffen zu können. Neben der kulturellen Adaptation könnte auch die Anpassung an das Bildungsniveau sowie das Alter der Betroffenen und eine mögliche PNE-App für zukünftige Untersuchungen relevant sein. KW - PNE KW - PNE KW - Physiotherapie KW - Forschungssymposium KW - FSPT Y1 - 2025 U6 - https://doi.org/10.1055/s-0045-1811330 VL - 21 IS - S02 PB - Thieme CY - Stuttgart ER - TY - RPRT A1 - Schwarz, Philipp A1 - Bock, Sebastian A1 - Weiß, Martin T1 - Abschlussbericht Projekt LeaP - Learning Poses : Posenerkennung mit Neuronalen Netzen BT - Programm zur Förderung der angewandten Forschung und Entwicklung an Hochschulen für angewandte Wissenschaften – Fachhochschulen (Kap. 15 49 TG 78), Förderperiode 2018 – 2021; Programmsäule Strukturimpuls Forschungseinstieg - Projekt “Posenerkennung mit Neuronalen Netzen” N2 - Die Schätzung der 6D-Pose bekannter Objekte findet Anwendungen in der Robotik, der Luft- und Raumfahrtsteuerung und automatisierten Produktionsumgebungen. Es ist nach wie vor gängige Praxis, klassische Bildverarbeitungsmethoden zu verwenden, um eine hohe Präzision zu erreichen. Diese Methoden erfordern jedoch eine manuelle Parametrisierung der verwendeten Erkennungswerkzeuge für jedes einzelne Objekt. Dies wirft die Frage auf, ob maschinelle Lerntechniken, insb. convolutional neural networks, Netzwerke, so trainiert werden können, dass sie die in der Industrie geforderte Präzision ohne individuelle Programmierung erreichen können. Darüber sollen in Produktionsumgebungen Umwelteinflüsse wie Lichtverhältnisse 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. Zusätzlich wird ein Ansatz mit reinforcement learning entwickelt und untersucht. KW - Posenermittlung KW - convolutional neural network KW - Konvergenzverhalten Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-88514 CY - Regensburg ER - TY - RPRT A1 - Schultz, Maximilian T1 - 1.Bericht für das Regensburg Center of Health Sciences and Technology (RCHST) N2 - Der vorliegende Bericht zeigt den aktuellen Stand des Projekts „Künstliche Intelligenz für Nichtregierungsorganisationen (KINiro) – Bedarf, Akzeptanz und Umsetzungsmöglichkeiten“ an der OTH Regensburg am Institut für Sozialforschung und Technikfolgenabschätzung (IST). Im Projektbericht wird das Projekt KINiro mit besonderem Blick auf die Erkenntnisse und Tätigkeiten im Gesundheitswesen aufgezeigt. Das Projekt KINiro wird mit Laufzeit Januar 2023 bis Dezember 2025 durch das Bundesministerium für Familie, Senioren, Frauen und Jugend (BMFSFJ) gefördert. Eine zusätzliche Unterstützung bietet das Regensburg Center of Health Sciences and Technology (RCHST) KW - Künstliche Intelligenz KW - Gesundheit Y1 - 2024 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-73125 VL - 2024 PB - OTH Regensburg CY - Regensburg ER - TY - JOUR A1 - Qiao, Yu A1 - Grad, Marius A1 - Nonn, Aida T1 - Toward an Efficient and Robust Process–Structure Prediction Framework for Filigree L-PBF 316L Stainless Steel Structures JF - Metals N2 - 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. Y1 - 2025 U6 - https://doi.org/10.3390/met15070812 SN - 2075-4701 VL - 15 IS - 7 PB - MDPI ER - TY - CHAP A1 - Schwägerl, Felix A1 - Uhrig, Sabrina A1 - Westfechtel, Bernhard T1 - A Graph-based Algorithm for Three-way Merging of Ordered Collections in EMF Models T2 - Science of Computer Programming N2 - 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. KW - EMF Models KW - Model Merging KW - Graph Algorithms Y1 - 2014 U6 - https://doi.org/10.1016/j.scico.2015.02.008 VL - 113 IS - Part 1 SP - 51 EP - 81 ER - TY - CHAP A1 - Buchmann, Thomas A1 - Schwägerl, Felix T1 - Breaking the Boundaries of Meta Models and Preventing Information Loss in Model-Driven Software Product Lines T2 - Proceedings of the 11th International Conference on Evaluation of Novel Software Approaches to Software Engineering, Vol 1, 2016, Rome, Italy N2 - 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. KW - Software Product Lines KW - Model-Driven Development KW - Unconstrained Variability KW - Information Loss KW - Negative Variability KW - Application Engineering Y1 - 2016 U6 - https://doi.org/10.5220/0005789100730083 SP - 83 PB - SCITEPRESS - Science and and Technology Publications ER - TY - CHAP A1 - Schwägerl, Felix A1 - Uhrig, Sabrina A1 - Westfechtel, Bernhard T1 - Model-based tool support for consistent three-way merging of EMF models T2 - ACME '13, Proceedings of the workshop on ACadeMics Tooling with Eclipse N2 - 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. Y1 - 2013 U6 - https://doi.org/10.1145/2491279.2491281 PB - ACM CY - New York, NY, USA ER - TY - INPR A1 - Chow, Rosan T1 - Narcissistic and Embodied Human-Centered-Design N2 - 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 passé 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. KW - Design, Human-Centered, Posthuman, Anthropocentrism KW - More-Than-Human Y1 - 2026 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-87557 SN - 978-3-0356-3012-1 N1 - Preprint des Buchkapitels: Narcissistic- und Embodied Human-Centered-Design in Nutzen statt Besitzen: https://opus4.kobv.de/opus4-oth-regensburg/frontdoor/index/index/start/0/rows/10/sortfield/score/sortorder/desc/searchtype/simple/query/978-3-0356-3012-1/docId/8847 ER - TY - CHAP A1 - Sachenbacher, Martin A1 - Leucker, Martin T1 - Towards Monitoring and Diagnosis of Quantum Digital Twins T2 - Lecture Notes in Informatics (LNI) N2 - 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. Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-87546 VL - P-366 SP - 1767 EP - 1772 PB - Gesellschaft für Informatik e.V. CY - Bonn ER - TY - GEN A1 - Gschoßmann, Lukas A1 - Schedel, Valentin A1 - Süß, Franz A1 - Weber, Markus A1 - Pfingsten, Andrea A1 - Dendorfer, Sebastian T1 - Evaluating Knee Joint Loads Across Exercises and Activities of Daily Living to Personalize TKA Rehabilitation T2 - ISB 2025 - The XXX Congress of the International Society of Biomechanics, 27.-31. July 2025, Stockholm N2 - This study assessed knee joint loading during various physiotherapy exercises and activities of daily living in 30 healthy subjects. Results showed that lunges and squats caused the highest joint forces, while gait and stair activities also imposed substantial loads. These findings support datadriven exercise selection for personalized rehabilitation after total knee arthroplasty. Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-87252 ER - TY - CHAP A1 - Chow, Rosan ED - Brandes, Uta ED - Bieling, Tom ED - Christensen, Michelle ED - Jonas, Wolfgang T1 - Narcissistic- und Embodied Human-Centered-Design T2 - Nutzen statt Besitzen N2 - 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 passé 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. KW - Design KW - Human-Centered KW - Posthuman KW - Anthropocentrism Y1 - 2025 SN - 978-3-0356-3012-1 N1 - Preprint des Kapitels auf Englisch auch auf OPUS unter: https://doi.org/10.35096/othr/pub-8755 SP - 91 EP - 101 PB - Birkhäuser CY - Basel ER - TY - JOUR A1 - Rueckert, Tobias A1 - Rauber, David A1 - Maerkl, Raphaela A1 - Klausmann, Leonard A1 - Yildiran, Suemeyye R. A1 - Gutbrod, Max A1 - Nunes, Danilo Weber A1 - Moreno, Alvaro Fernandez A1 - Luengo, Imanol A1 - Stoyanov, Danail A1 - Toussaint, Nicolas A1 - Cho, Enki A1 - Kim, Hyeon Bae A1 - Choo, Oh Sung A1 - Kim, Ka Young A1 - Kim, Seong Tae A1 - Arantes, Gonçalo A1 - Song, Kehan A1 - Zhu, Jianjun A1 - Xiong, Junchen A1 - Lin, Tingyi A1 - Kikuchi, Shunsuke A1 - Matsuzaki, Hiroki A1 - Kouno, Atsushi A1 - Manesco, João Renato Ribeiro A1 - Papa, João Paulo A1 - Choi, Tae-Min A1 - Jeong, Tae Kyeong A1 - Park, Juyoun A1 - Alabi, Oluwatosin A1 - Wei, Meng A1 - Vercauteren, Tom A1 - Wu, Runzhi A1 - Xu, Mengya A1 - Wang, An A1 - Bai, Long A1 - Ren, Hongliang A1 - Yamlahi, Amine A1 - Hennighausen, Jakob A1 - Maier-Hein, Lena A1 - Kondo, Satoshi A1 - Kasai, Satoshi A1 - Hirasawa, Kousuke A1 - Yang, Shu A1 - Wang, Yihui A1 - Chen, Hao A1 - Rodríguez, Santiago A1 - Aparicio, Nicolás A1 - Manrique, Leonardo A1 - Palm, Christoph A1 - Wilhelm, Dirk A1 - Feussner, Hubertus A1 - Rueckert, Daniel A1 - Speidel, Stefanie A1 - Nasirihaghighi, Sahar A1 - Al Khalil, Yasmina A1 - Li, Yiping A1 - Arbeláez, Pablo A1 - Ayobi, Nicolás A1 - Hosie, Olivia A1 - Lyons, Juan Camilo T1 - Comparative validation of surgical phase recognition, instrument keypoint estimation, and instrument instance segmentation in endoscopy: Results of the PhaKIR 2024 challenge JF - Medical Image Analysis N2 - Reliable recognition and localization of surgical instruments in endoscopic video recordings are foundational for a wide range of applications in computer- and robot-assisted minimally invasive surgery (RAMIS), including surgical training, skill assessment, and autonomous assistance. However, robust performance under real-world conditions remains a significant challenge. Incorporating surgical context – such as the current procedural phase – has emerged as a promising strategy to improve robustness and interpretability. To address these challenges, we organized the Surgical Procedure Phase, Keypoint, and Instrument Recognition (PhaKIR) sub-challenge as part of the Endoscopic Vision (EndoVis) challenge at MICCAI 2024. We introduced a novel, multi-center dataset comprising thirteen full-length laparoscopic cholecystectomy videos collected from three distinct medical institutions, with unified annotations for three interrelated tasks: surgical phase recognition, instrument keypoint estimation, and instrument instance segmentation. Unlike existing datasets, ours enables joint investigation of instrument localization and procedural context within the same data while supporting the integration of temporal information across entire procedures. We report results and findings in accordance with the BIAS guidelines for biomedical image analysis challenges. The PhaKIR sub-challenge advances the field by providing a unique benchmark for developing temporally aware, context-driven methods in RAMIS and offers a high-quality resource to support future research in surgical scene understanding. KW - Surgical phase recognition KW - Instrument keypoint estimation KW - Instrument instance segmentation KW - Robot-assisted surgery Y1 - 2026 U6 - https://doi.org/10.1016/j.media.2026.103945 SN - 1361-8415 N1 - Corresponding author der OTH Regensburg: Tobias Rueckert Die Preprint-Version ist ebenfalls in diesem Repositorium verzeichnet unter: https://opus4.kobv.de/opus4-oth-regensburg/solrsearch/index/search/start/0/rows/10/sortfield/score/sortorder/desc/searchtype/simple/query/2507.16559 VL - 109 PB - Elsevier ER - TY - JOUR A1 - Hollweck, Christoph A1 - Leidinger, Lukas A1 - Hartmann, Stefan A1 - Wagner, Marcus A1 - Wüchner, Roland T1 - An analysis of the critical time step size for explicit dynamics using trimmed B-splines, LR-splines, and THB-splines JF - Computer Methods in Applied Mechanics and Engineering N2 - Isogeometric analysis (IGA) combined with explicit dynamics is increasingly used in academia and has already been successfully applied in industrial simulations, including crash and sheet-metal forming. Since explicit schemes are only conditionally stable, accurate estimation of the critical time step is essential for both stability and efficiency. Adaptive mesh refinement is widely used to balance accuracy and computational cost. In IGA, THB- and LR-splines break the tensor-product structure of standard B-splines and enable local refinement, but their effect on the critical time step under trimming has not been systematically studied - a key requirement for reliable time step estimation. We investigate the critical time step in explicit dynamic simulations using trimmed B-splines, LR-splines, and THB-splines, based on a lumped mass matrix obtained by simple row summation. One-dimensional bar, two-dimensional membrane, and trimmed shell models are analyzed to determine how trimming and local refinement influence element and system eigenfrequencies, which directly control the stable time step. Refined boundary elements in open knot vectors are identified as the main bottleneck. Trimming these elements can increase the stable time step, though certain trimming configurations introduce new restrictions. Results show that LR- and THB-splines impose time step constraints similar to B-splines, making them equally suitable for explicit simulations. We also present a general method for computing element-wise Bézier extraction operators for LR- and THB-splines, enabling straightforward integration into standard finite element solvers. The findings are validated through nonlinear sheet-metal forming simulations in LS-DYNA using shells discretized with trimmed B-, LR-, and THB-splines. This represents the first such application and demonstrates their practical feasibility for industrial use. Y1 - 2026 U6 - https://doi.org/10.1016/j.cma.2025.118656 SN - 0045-7825 N1 - Corresponding author der OTH Regensburg: Christoph Hollweck VL - 450 PB - Elsevier ER - TY - GEN A1 - Amberger, Franziska T1 - Optimierung der Bemessung von Mauerwerksbauten unter Horizontallast Y1 - 2025 ER - TY - JOUR A1 - Käss, Sebastian A1 - Strahringer, Susanne A1 - Westner, Markus T1 - Archetypes, Situations, and Practices : a Guide to Successful Low-Code Adoption JF - Information Resources Management Journal N2 - This paper extends prior work on low-code by explaining when adoption archetypes occur and how to use them. Motivated by information technology (IT) talent shortages and uneven low-code development platform (LCDP) outcomes, the paper seeks practical guidance for post-adoption choices in work systems. Using a multiple mini case study of 36 cases in large German organizations, this study analyzes interviews and context questionnaires with within-/cross-case coding and pattern matching against a 13-factor model. This analysis identifies situations that trigger three adoption archetypes—application development democratizers, synergy realizers, and IT resource shortage mitigators—and one non-adoption archetype, intricacy adversaries. The analysis also maps advantages and disadvantages and distills 12 good practices. Across adoption cases, efficiency is the dominant goal, whereas non-adoption stems from high application sophistication. The results give actionable guidance: align goals to an archetype, stick to LCDP standards, involve IT and foster an open culture, invest in skilling, reuse platform components, and reserve LCDPs for less-complex apps while planning architecture early. KW - Business-managed IT KW - Low-Code Development KW - Citizen Development KW - Shadow IT KW - Multiple Mini Case Studies KW - Work Systems Theory KW - Good Practices Y1 - 2025 U6 - https://doi.org/10.4018/IRMJ.396005 SN - 1040-1628 VL - 38 IS - 1 PB - IGI Global ER - TY - CHAP A1 - Westner, Markus ED - Hofbauer, Günter T1 - Generative AI in Business BT - Opportunities, Challenges, and Strategic Implications Authors Markus Westner T2 - Artificial Intelligence in Business and Engineering N2 - Generative Artificial Intelligence (GenAI) is transforming industries at an unprecedented rate, offering novel opportunities for productivity and innovation. This article explores the adoption of GenAI, highlighting its accelerated uptake compared to previous technologies. Key topics include productivity gains through GenAI tools (e.g., ChatGPT, Klarna’s AI assistant), challenges such as data quality and organizational readiness, and the implications for business strategy. Practical recommendations for managing generative AI adoption and maximizing its impact on both individual and organizational levels are also provided. The analysis underscores the necessity of aligning AI capabilities with customer needs and creating data-driven, adaptable business models. KW - Generative AI KW - Productivity KW - Technology Adoption Y1 - 2025 SN - 978-3-17-046742-2 SP - 38 EP - 50 PB - Kohlhammer CY - Stuttgart ER - TY - CHAP A1 - Preiß, Niklas A1 - Westner, Markus T1 - From Agents to Copilots: a Systematic Review of Digital Assistant Technology Adoption in Proprietary Productivity Software T2 - Annals of Computer Science and Information Systems N2 - This study provides a systematic review of how the impact and adaptation of digital assistant technologies (DATs) are defined, operationalized, and studied, synthesizing key domains where DATs generate or are expected to generate value. Based on an analysis of 61 articles published since 2013, it identifies five main areas of impact: productivity and efficiency, business development, resource optimization, quality enhancement, and the promotion of learning and creativity. The review highlights DAT adoption across various disciplines and industries, while revealing limited longitudinal research on benefits and adaptation. Key gaps remain in understanding strategic use and sustained impact. Future research should explore longitudinal comparisons of recently introduced generative AI-driven DATs and their organizational implications. This review contributes to information systems research by structuring current knowledge on DAT adoption and outcomes, and by proposing a research agenda to support deeper exploration of their value and long-term integration. KW - Digital Assistant Technology KW - Copilot KW - Generative AI KW - Technology Adoption KW - Productivity Y1 - 2025 U6 - https://doi.org/10.15439/2025F3271 SN - 2300-5963 VL - 43 SP - 565 EP - 576 PB - Polish Information Processing Society ER - TY - CHAP A1 - Köhler, Jessica A1 - Harl, Maximilian Victor A1 - Westner, Markus A1 - Strahringer, Susanne T1 - Can AI be a Scholar? A Systematic Review on the Role of Generative AI in Systematic Literature Reviews T2 - 2025 27th International Conference on Business Informatics (CBI), 09-12. September 2025, Lisbon, Portugal N2 - Systematic literature reviews (SLRs) are foundational for research but resource-intensive to conduct. With the rise of large language models (LLMs) such as ChatGPT, generative AI (GenAI) tools are being increasingly explored for their potential to support and transform the SLR process. This study presents a systematic review of peerreviewed articles that examine how LLM-based GenAI tools are used in different SLR phases. Following the PRISMA 2020 guidelines, we screened 1,846 publications published since January 2021 until April 2025 and selected 54 for in-depth analysis. Each study was coded by review phase, prompting approach, automation level, validation type and challenges. Our findings show that GenAI is most often used to support in the screening, search, and writing phases, typically through Basic Prompting and under human oversight. While many studies report efficiency gains, concerns remain regarding validity, transparency, and methodological rigor. Moreover, GenAI is frequently applied to isolated tasks but is rarely embedded in a structured, methodologically guided review processhighlighting the need for clearer phase-specific guidance and standards. We offer a structured, phase-specific synthesis that highlights both the promise and the current limitations of GenAI in literature reviews and thereby offer practical recommendations for the responsible use of GenAI in literature reviews. KW - Generative AI KW - Large Language Models KW - ChatGPT KW - Systematic Literature Review KW - Evidence Synthesis KW - AI-assisted Literature Review Y1 - 2025 U6 - https://doi.org/10.1109/CBI68102.2025.00012 PB - IEEE ER - TY - THES A1 - Fleischmann, Florian T1 - Ein Beitrag zur Bestimmung der Rheologischen Eigenschaften Selbstverdichtender Betone mit dem Kugel-Messsystem N2 - Zur Erfassung der rheologischen Eigenschaften Selbstverdichtender Betone (SVB) existieren unterschiedlichste Betonrheometer und Messsysteme. Aufgrund der besonderen Eigenschaften Selbstverdichtender Betone ist die Erfassung deutlich schwieriger als bei Flüssigkeiten und feinkörnigen Suspensionen. Vor allem die Zusammensetzung unterschiedlicher Ausgangsstoffe, die verwendete grobe Gesteinskörnung sowie die ablaufende Hydratation und die dabei entstehenden Wechselwirkungskräfte erschweren die Bestimmung der rheologischen Eigenschaften. Ferner haben diese Eigenheiten zur Folge, dass die geforderten Randbedingungen der klassischen Rheologie nicht mehr eingehalten sind und eine genormte Darstellung der Ergebnisse nicht möglich ist. Bei den existierenden Betonrheometern handelt es sich daher meist um Relativ-Messsysteme, die an die Rheometer der klassischen Rheologie angepasst sind. Eine exakte Bestimmung der rheologischen Eigenschaften Selbstverdichtender Betone ist daher schwierig. Ein Kennzeichen vieler Betonrheometer ist zudem die hohe Schergeschwindigkeit und die permanente Scherung der Probe. Diese Scherbelastung entspricht aber in den meisten Fällen nicht dem tatsächlichen Fließverhalten Selbstverdichtender Betone. Aufgrund dieser Sachlage hat sich diese Arbeit ergeben. Ziel war die Entwicklung eines Betonrheometers, das die speziellen Eigenschaften des SVB berücksichtigt und die tatsächlichen Fließbedingungen simuliert. Als Ausgangspunkt diente die exzentrisch rotierende Kugel (Kugel-Messsystem), die bereits für rheologische Untersuchungen von Leimen und Mörtel erfolgreich eingesetzt wird. Eine Kugel bewegt sich dabei auf einer Kreisbahn durch den Leim oder den Mörtel und erfasst das Widerstandsmoment bei definierter Geschwindigkeit. Rheometer auf der Grundlage des Kugel-Messsystems ermöglichen die Ermittlung von mehreren Fließparametern in frischen, ungestörten Zementleimen oder Selbstverdichtenden Mörtel. Durch geeignete Wahl des Messprofils können mit diesem Messsystem in kurzer Zeit genaue Informationen über das Fließverhalten ermittelt werden. In den hier beschriebenen Studien wurde das Kugel-Messsystem für Selbstverdichtende Betone adaptiert und an seine speziellen Randbedingungen angepasst. Bei der Messung kamen zwei grundlegende Messprofile zum Einsatz: Beim ersten Messprofil wurde ein Rampenprofil mit zu- und abnehmender Geschwindigkeit vorgegeben und die dazugehörigen Messwerte als Fließkurve dargestellt. Beim zweiten Messprofil wurde eine konstante Geschwindigkeit vorgegeben und die dabei ermittelte Schubspannung über den Messzeitraum bzw. über den zurückgelegten Weg der Kugel abgebildet. Als Resultat konnten die Fließgrenze und die Viskosität ausgewertet werden. Mit unterschiedlichen Messprofilen und den damit verbundenen unterschiedlichen Auswertungen wurden unterschiedlich definierte Fließgrenzen ermittelt und einander gegenübergestellt. Um den Zusammenhang mit dem Setzfließmaß und der Trichterauslaufzeit darzulegen, wurde das modifizierte Kugel-Messsystem anhand mehrerer SVBRezepturen verifiziert. Für die Bewertung des Fließverhaltens wurde jeder Abschnitt der Messkurven betrachtet und diskutiert. Um die Ergebnisse einordnen und mit anderen Rheometern vergleichen zu können, wurden aus den gemessenen Werten die rheologisch genormten Einheiten berechnet. Neben der Berechnung dieser genormten Einheiten, die in dieser V Arbeit kontrovers diskutiert wird, wurde auch das Strömungsverhalten der Kugel beim Durchfahren des Betons beobachtet und beschrieben. Ein weiterer wesentlicher Aspekt war die Betrachtung der Geschwindigkeit, mit der die Kugel durch den Beton fährt. Diese Geschwindigkeit hat einen beträchtlichen Einfluss auf die Ergebnisse der Messung. Bei zu geringer Geschwindigkeit konnte weder eine Fließkurve noch der Verlauf der Schubspannung bei konstanter Geschwindigkeit erzeugt werden. Bei zu hoher Geschwindigkeit war dagegen, zu Beginn der Messung eine zusätzliche Widerstandskraft infolge der hohen Beschleunigung der Kugel zu verzeichnen. Neben der Geschwindigkeit war auch der Strukturaufbau nach einer Ruhezeit von Bedeutung. Beobachtet wurde das Verhalten nach einer, drei, fünf, zehn und 20 Minuten. Es konnte beobachtet werden, dass es infolge der Hydratation und unterschiedlicher Wechselwirkungskräfte zu einem Strukturaufbau kommt, der sich deutlich auf die gemessenen Fließgrenzen (insbesondere die Statische Fließgrenze) und die Viskosität auswirkt. Die Reproduzierbarkeit der Ergebnisse wurde anhand unterschiedlicher Betonrezepturen und Wiederholungsversuchen gezeigt. Ein besonderes Augenmerk lag dabei in der Betrachtung eines variierenden Wassergehalts bei gleichbleibender Rezeptur. Mit dem modifizierten Kugel-Messsystem war es möglich, bereits geringe Wassergehaltsschwankungen (3 bis 5 l/m³) verlässlich zu erfassen. Das Messgerät wurde schließlich mit der Vane-Zelle und dem Platte/Platte-Messsystem verglichen. Ein direkter Vergleich der Messwerte war jedoch schwierig, da den drei Geräten unterschiedliche Messsysteme zugrunde liegen. Auch die Umrechnung der Messwerte in genormte rheologische Einheiten ist von Messgerät zu Messgerät unterschiedlich und die Ergebnisse somit nicht identisch. Ein Vergleich war aus diesem Grund nur qualitativ möglich. In dieser Arbeit konnte gezeigt werden, dass es möglich ist, mit einem Messgerät auf Grundlage der exzentrisch rotierenden Kugel, die rheologischen Eigenschaften Selbstverdichtender Betone zu bewerten. Dabei wurden die Bedingungen einer langsamen Schergeschwindigkeit und der Messung in frischem Beton eingehalten. Y1 - 2014 UR - https://www.baustoffe.ruhr-uni-bochum.de/bs/mam/content/dissertation_florian_fleischmann.pdf CY - Bochum ER - TY - JOUR A1 - Schiegl, Corina A1 - Schroll-Decker, Irmgard A1 - Kurbel, Matthias T1 - Potenzial trotz schwerer Krankheit : Übergangswohnform zur außerklinischen Beatmungsentwöhnung eröffnet Option zur Selbstbestimmung JF - Forum Sozialarbeit + Gesundheit N2 - Selbstbestimmung gilt als wesentlicher Wert in der Sozialen Arbeit. Wenn Menschen ihre Bedürfnisse kennen und äußern können, trägt dies zum Wohlbefinden bei und steigert die subjektive Lebensqualität. Die Interventionen Sozialer Arbeit sollen es daher ermöglichen, dass Menschen über ihre eigenen Lebensbedingungen Kontrolle erhalten. Wie gestaltet sich aber die Selbstbestimmung bei einer Intensivpflegebedürftigkeit? Dieser Beitrag thematisiert, wie schwer erkrankte Menschen, die beispielsweise von einem Beatmungsgerät abhängig sind, ihre Selbstbestimmung verstehen. Anhand der Ergebnisse einer qualitativen Studie wird gezeigt, welche Aspekte von Selbstbestimmung bei schwersten krankheitsbedingten Einschränkungen individuell priorisiert werden. KW - Selbstbestimmung, außerklinisches Weaning Y1 - 2026 VL - 31 IS - 1 PB - utb CY - Stuttgart ER -