@inproceedings{BauerFrikel, author = {Bauer, Patrick and Frikel, J{\"u}rgen}, title = {BPConvNet: a deep learning based ρ-Filtered layergram reconstruction method for computed tomography}, series = {AIP Conference Proceedings}, volume = {3315}, booktitle = {AIP Conference Proceedings}, number = {1}, publisher = {AIP Publishing}, issn = {0094-243X}, doi = {10.1063/5.0286063}, abstract = {In this article, we address the reconstruction problem in computed tomography (CT) when dealing with sparse view data. Traditional approaches like filtered backprojection (FBP) often fail under these conditions, leading to streaking artifacts. We propose BPConvNet, a deep learning based version of the ρ-filtered layergram or backprojection filtration (BPF) technique (cf. [1]). Unlike FBP, the BPF method applies filtering (F) after backprojection (BP), hence the name. The proposed BPConvNet adapts the BPF workflow by substituting the filtering step with a residual convolutional neural network. Our numerical experiments demonstrate that BPConvNet is competitive to similar deep learning methods. Moreover, we explain that BPConvNet can be easily adapted to to different CT acquisition geometries, such as fan beam and 3D configurations}, language = {en} } @misc{Schaffer, type = {Master Thesis}, author = {Schaffer, Josefa}, title = {Precision in eye tracking: evaluation and improvement of accuracy}, address = {Regensburg}, doi = {10.35096/othr/pub-8529}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-85296}, school = {Ostbayerische Technische Hochschule Regensburg}, pages = {IX, 74}, abstract = {This thesis will evaluate the accuracy of the Tobii Pro Glasses 3, which are wearable eye tracking glasses. A static and dynamic accuracy study will be conducted, utilising a poster and imitating realistic environments. The results will be evaluated using a self-developed sample-wise approach, trying to determine possible differences between static and dynamic conditions while wearing eye tracking glasses. In addition to that, a tool named glassesValidator, used to calculate data quality metrics of eye tracking glasses, will be evaluated on its accuracy and validity itself. In the static accuracy study, participants will focus, in reading order, on nine fixation targets on the poster for at least two seconds while using a chin rest to prevent head movement. In the dynamic accuracy study participants will be walking in a semicircular movement around the poster while focusing only on the central fixation target on the poster. The results for the static and dynamic study will be compared to each other, providing possible influence of different lighting conditions and the usage of contact lenses. The results provided by glassesValidator and the self-developed accuracy approach will also be compared to each other to evaluate and provide possible improvements to increase the accuracy of the tool.}, language = {en} } @article{NeubauerFischerHackenberg, author = {Neubauer, Katrin and Fischer, Sebastian and Hackenberg, Rudolf}, title = {Security risk analysis of the cloud infrastructure of Smart Grid and IoT - 4-Level-Trust-Model as a security solution}, series = {International Journal on Advances in Internet Technology}, volume = {13}, journal = {International Journal on Advances in Internet Technology}, number = {1\&2}, pages = {11 -- 20}, abstract = {The digital transformation has found its way into business and private life. It consists of digitization and digitaliza- tion. Digitization means the technical process and digitalization is the socio-technological process. Technologies of digitization are Cloud Computing (CC), Internet of Things (IoT) and Smart Grid (SG), which are separate technologies. The increasing digitalization in the private sector and of the energy industry connect these technologies. Actually, there is no connection between the CC infrastructure and the SG infrastructure at the moment, because in Germany the SG is currently under construction. If one looks at the CC and IoT, it must be stated there is an connection between the IoT infrastructure and the CC infrastructure as a service provider. To connect the technologies CC, IoT and SG and also build an SG cloud for innovative services, the new laws for privacy must be implemented. For privacy and security analyses it is important to know which data can be stored and distributed on a cloud. To illustrate this analysis, we connect the SG infrastructure with the IoT. An IoT device (car charging station) should be able to transfer data to and from the SG. SG is a critical infrastructure and the IoT device a potential insecure device and network. We show the communication between the smart meter switching box and the IoT device and the data transferred between their clouds. The charging station is connected to the SG to get the current amount of renewable energy in the grid. This is necessary to create a new smart service. But this service also generates private data (e.g., name, address, payment details). The private data should not be transferred to the IoT cloud. For the connection of SG and IoT, availability, confidentiality and integrity must be ensured. A risk analysis over all the cloud connections, including the vulnerability and the ability of an attacker, the resulting risk and the 4-Level- Trust-Model for security assessment are developed. Furthermore, we show the application of the 4-Level-Trust-Model in this paper.}, language = {en} } @inproceedings{SchwaegerlBuchmannWestfechtel, author = {Schw{\"a}gerl, Felix and Buchmann, Thomas and Westfechtel, Bernhard}, title = {Multi-variant model transformations - a problem statement}, series = {Proceedings of the 11th International Conference on Evaluation of Novel Software Approaches to Software Engineering}, booktitle = {Proceedings of the 11th International Conference on Evaluation of Novel Software Approaches to Software Engineering}, publisher = {SCITEPRESS}, isbn = {978-989-758-189-2}, issn = {2184-4895}, doi = {10.5220/0005878702030209}, pages = {203 -- 209}, abstract = {Model Transformations are a key element of Model-Driven Software Engineering. As soon as variability is involved, transformations become increasingly complicated. The lack of support for variability in model transformations impairs the acceptance of approaches to organized reuse such as software product lines. In this position paper, the general problem of multi-variant model transformations is formulated for MOF-based, XMI-serialized models. A simplistic case study is presented to specify the input and the expected output of such a transformation. Furthermore, requirements for tool support are defined, including a standardized representation of both multi-variant model instances and variability information, as well as an execution specification for multi-variant transformations. A literature review reveals that the problem is weakly identified and often solved using ad-hoc solutions; there exists no tool providing a general solution to the proposed problem statement. The observation s presented here may serve for the future development of standards and tools.}, language = {en} } @techreport{AlexEichingerHeyderetal., type = {Working Paper}, author = {Alex, Karla and Eichinger, Johanna and Heyder, Clemens and Kandlbinder, Agnes and Loder, Sandra and Rolfes, Vasilija and R{\"o}ttger, Sara and Scharf, Anna and Scorna, Ulrike and Weigold, Stefanie}, title = {Abstractband I: In-vitro-Gametogenese (IVG) und artifizieller Uterus (AU) - Problemausl{\"o}ser oder Probleml{\"o}ser? Ethische, soziale und rechtliche Aspekte zuk{\"u}nftiger reproduktionsmedizinischer Verfahren}, editor = {Cerullo, Laura and Gerhards, Helene and Weber, Karsten}, doi = {10.13140/RG.2.2.30303.53928}, pages = {21}, language = {de} } @article{HantschWestnerMatschi, author = {Hantsch, Carolin and Westner, Markus and Matschi, Markus}, title = {IT/OT-Konvergenz: Status-Quo und Umsetzungsempfehlungen}, series = {HMD Praxis der Wirtschaftsinformatik}, journal = {HMD Praxis der Wirtschaftsinformatik}, publisher = {Springer Nature}, doi = {10.1365/s40702-024-01111-1}, url = {http://nbn-resolving.de/urn:nbn:de:bvb:898-opus4-77937}, pages = {16}, abstract = {Organisationen machen große Anstrengungen zur Verbesserung ihrer Ambidextrie, d. h. ihrer F{\"a}higkeit sowohl Exploitationsziele (z. B. Effizienz, Vorhersagbarkeit) als auch Explorationsziele (z. B. Anpassbarkeit, Innovation) zu erreichen. Obwohl gem{\"a}ß der Praxisliteratur Technologie in Software-Projekten dabei eine zentrale Rolle spielen kann, gibt es kaum Forschung dazu, wie technologische Faktoren Ambidexterie in Software-Projekten beeinflussen. In dieser Studie untersuchen wir die Rolle dreier technologischer Faktoren: kontinuierliche Integration, Standardisierung und Microservice-Architektur. Die Ergebnisse einer Mehrinformanten-Umfrage in 95 Projekten in der Schweiz und D{\"a}nemark zeigen, dass kontinuierliche Integration und Standardisierung mit h{\"o}herer Ambidexterie einhergehen, w{\"a}hrend der Zusammenhang zwischen Microservice-Architektur und Ambidextrie nicht signifikant ist. Unser Artikel geht {\"u}ber die existierende Forschung hinaus, indem er zeigt, dass kontinuierliche Integration und Standardisierung nicht nur Exploitation, sondern auch Exploration f{\"o}rdern k{\"o}nnen. Wir diskutieren auch Gr{\"u}nde f{\"u}r den insignifikanten Zusammenhang zwischen Microservice-Architektur und Ambidextrie.}, language = {de} } @article{SchultzHauerHaugetal., author = {Schultz, Maximilian and Hauer, Franziska and Haug, Sonja and Weber, Karsten}, title = {K{\"u}nstliche Intelligenz in sozialen Organisationen implementieren}, series = {Sozialwirtschaft}, volume = {35}, journal = {Sozialwirtschaft}, number = {5}, publisher = {nomos Verlag}, doi = {10.5771/1613-0707-2025-5-35}, pages = {35 -- 38}, abstract = {Die Digitalisierung wird in der Gesellschaft seit vielen Jahren thematisiert. Durch K{\"u}nstliche Intelligenz (KI) hat diese Diskussion einen zus{\"a}tzlichen Anstoß bekommen. Inbesondere f{\"u}r gemeinwohlorientierte Organisationen bieten sich Potenziale sowie Risiken. Sie k{\"o}nnten zur Entlastung von Fachkr{\"a}ften, zur Verbesserung organisatorischer Abl{\"a}ufe und zur Entwicklung neuer Unterst{\"u}tzungsangebote beitragen. Angesichts chronischer Herausforderungen wie Fachkr{\"a}ftemangel, Ressourcenknappheit und wachsender Komplexit{\"a}t von Arbeitsprozessen erscheint KI daher als m{\"o}glicher Hebel f{\"u}r eine tiefgreifende Transformation.}, language = {de} } @misc{Weber, author = {Weber, Karsten}, title = {KI-Nutzung f{\"u}r (psychisch) kranke Menschen: Auswirkungen auf das Professionsverst{\"a}ndnis der Fachkr{\"a}fte}, language = {de} } @misc{Weber, author = {Weber, Karsten}, title = {Elektrisch + digital = nachhaltig? Welche Nachhaltigkeitsgewinne haben neue Mobilit{\"a}tformen?}, language = {de} } @misc{Weber, author = {Weber, Karsten}, title = {Medizin, Mobilit{\"a}t, Medien: Digitaler Wandel als Chance und Herausforderung}, language = {de} } @misc{Weber, author = {Weber, Karsten}, title = {Der Mars zwischen Science und Fiction}, language = {de} } @misc{Weber, author = {Weber, Karsten}, title = {Nachhaltigkeit ist (k)eine Frage der Philosophie}, language = {de} } @misc{Weber, author = {Weber, Karsten}, title = {M{\"o}gliche Zuk{\"u}nfte der K{\"u}nstlichen Intelligenz}, language = {de} } @misc{Weber, author = {Weber, Karsten}, title = {M{\"o}gliche Zuk{\"u}nfte der K{\"u}nstlichen Intelligenz}, language = {de} }