@article{MalekiMohammadi2023, author = {Maleki, Maniya and Mohammadi, Mahdieh}, title = {Velocity and pressure functions of an oscillating flow in a circular Hele-Shaw cell}, series = {Iranian Journal of Physics Research}, volume = {22}, journal = {Iranian Journal of Physics Research}, number = {1}, publisher = {Physics Society of Iran}, doi = {10.47176/ijpr.22.1.81304}, pages = {113 -- 120}, year = {2023}, abstract = {In this study, we have investigated the form of velocity and pressure functions of a fluid oscillating between two parallel glass sheets that form a circular Hele-Shaw cell. The flow has been considered to be radial, incompressible and laminar. The time-dependent Navier-Stokes equation has been solved in cylindrical coordinates using Fourier transform, and the oscillating flow velocity across the thickness of the cell has been obtained at different times. The flow velocity function in the unsteady state is related to the vertical component of the coordinates in the form of parabolic functions and also to the inverse of the radial component. The time dependence appears as a simple harmonic with a frequency equal to the oscillation frequency. The velocity of the flow is maximum at the middle of the cell along its height and gradually decreases from the middle towards the top or bottom plane and reaches zero. Pressure does not depend on the height and changes logarithmically with the radius. The dependence of pressure on time is also a simple harmonic with the external frequency, but it has a phase shift with respect to the velocity.}, language = {en} } @inproceedings{SoniNeubertDietrichetal.2023, author = {Soni, Jaykumar and Neubert, Tom and Dietrich, Benjamin and Vielhauer, Claus}, title = {Virtual Sessions for Forensic Analysis of Video Conferencing Systems: A Novel Methodology}, series = {Konferenz: IARIA SECURWARE 2023, the Seventeenth International Conference on Emerging Security Information, Systems and Technologies: Porto, Portugal}, booktitle = {Konferenz: IARIA SECURWARE 2023, the Seventeenth International Conference on Emerging Security Information, Systems and Technologies: Porto, Portugal}, publisher = {IARIA}, pages = {18 -- 20}, year = {2023}, language = {en} } @article{HascheKaraschewskiCreutzburg2023, author = {Hasche, Eberhard and Karaschewski, Oliver and Creutzburg, Reiner}, title = {iPhone12 imagery in scene-referred computer graphics pipelines}, series = {Electronic Imaging}, journal = {Electronic Imaging}, publisher = {Society for Imaging Science and Technology}, doi = {10.2352/EI.2023.35.3.MOBMU-350}, pages = {350-1 -- 350-14}, year = {2023}, abstract = {With the release of the Apple iPhone 12 Pro Max in 2020, various features were integrated that make it attractive as a recording device for scene-related computer graphics pipelines. The captured Apple RAW images have a much higher dynamic range than the standard 8-bit images. Since a scene-based workflow naturally has an extended dynamic range (HDR), the Apple RAW recordings can be well integrated. To correctly integrate the iPhone 12 pro Apple RAW data into a scene-related workflow, two command-line software solutions, among others, are dcraw and rawtoaces. In this paper, we concentrate on dcraw. dcraw offers the possibility to export RAW images directly to ACES2065-1. Different images recorded under different lighting conditions are examined to determine which options for the dcraw development produce the best results. Images from five different lighting situations like D65, D60, D55, D50, and 2980K, are examined. The DNG files are developed using different methods within dcraw. The values of the recorded ColorChecker24 patches are compared to reference values derived from BabelColor [1] and ACES [2].}, language = {en} } @article{JasterCreutzburgHasche2023, author = {Jaster, Daniel and Creutzburg, Reiner and Hasche, Eberhard}, title = {A qualitative study of LiDAR technologies and their application areas}, series = {Electronic Imaging}, volume = {35}, journal = {Electronic Imaging}, publisher = {Society for Imaging Science and Technology}, doi = {10.2352/EI.2023.35.3.MOBMU-368}, pages = {368-1 -- 368-15}, year = {2023}, abstract = {In this work, the most relevant 3D LiDAR technologies and their applications in 2022 were investigated. For this purpose, applications of LiDAR systems were classified into the typical application areas "3D modeling", "smart city", "robotics", "smart automotive" and "consumer goods". The investigation has shown that neither "mechanical" LiDAR technologies, nor so-called solid-state LiDAR technologies, nor "hybrid" LiDAR technologies can be evaluated as optimal for the typical application areas. In none of the application areas could all of the elaborated requirements be met. However, the "hybrid" LiDAR technologies such as sequential MEMS LiDAR technology and sequential flash LiDAR technology proved to be among the most suitable for most typical application areas. However, other technologies also tended to be suitable for individual typical application areas. Finally, it was found that several of the LiDAR technologies investigated are currently equally suitable for some typical application areas. To evaluate the suitability, concrete LiDAR systems - of different technologies and properties - were compared with the specific requirements of exemplary applications of an application area. The results of the investigation provide an orientation as to which LiDAR technology is promising for which application area.}, language = {en} } @unpublished{BaevaBrunnerElmasetal.2023, author = {Baeva, Gergana and Brunner, Robert and Elmas, Filiz and Fresz, Benjamin and Fuß, Christine and Heß, Claudia and Kellmeyer, Philipp and Mahner, Malin and Paulheim, Heiko and Poretschkin, Maximilian and Puntschuh, Michael and Seyerlein-Klug, Annegrit}, title = {Welche Zertifizierung ist hilfreich f{\"u}r Verbraucher*innen?}, doi = {10.24406/publica-2132}, year = {2023}, abstract = {In diesem Whitepaper fokussieren wir uns auf die KI-Verordnung nicht erfasste freiwillige Zertifizierung. Dabei stehen die Interessen und Sichtweisen der Verbraucher*innen im Vordergrund. Als Verbraucher*innen betrachten wir nicht nur die unmittelbaren Nutzer*innen von KI-Systemen, sondern auch Privatpersonen, die indirekt von KI-Ergebnissen betroffen sein k{\"o}nnen. Zudem ber{\"u}cksichtigen wir Menschen in der Rolle als souver{\"a}ne Datensubjekte, deren personenbezogene Daten in die Entwicklung von KI-Systemen einfließen. Dieses breite Verst{\"a}ndnis des Verbraucher*innenbegriffs entspricht dem Selbstverst{\"a}ndnis des Zentrums f{\"u}r vertrauensw{\"u}rdige K{\"u}nstliche Intelligenz (ZVKI). Wir stellen Thesen auf, wie freiwillige Zertifizierungen von KI-Systemen f{\"u}r Verbraucher*innen n{\"u}tzlich sein k{\"o}nnen. Die im Verlauf vorgestellten und begr{\"u}ndeten acht Thesen wurden in einer Reihe von interdisziplin{\"a}ren Workshops erarbeitet. Dabei identifizierten wir Herausforderungen einer KI-Zertifizierung aus Verbraucher*innensicht und pr{\"a}zisierten diese iterativ. Die Gruppendiskussionen dienten als Grundlage dieses Whitepapers und bauten auf Erkenntnissen der Fach-Arbeitsgruppe „KI Zertifizierung" des ZVKI auf. Alle Co-Autor*innen waren an der Erstellung des finalen Texts beteiligt. Die aufgestellten Thesen thematisieren grundlegende Anforderungen an eine KI-Zertifizierung aus einer {\"u}bergeordneten Perspektive, unabh{\"a}ngig von den spezifischen Details einer KI-Anwendung. Somit liefern sie keine Aussagen zu konkreten Inhalten der Zertifizierung. Detaillierte Empfehlungen setzen eine umfassende Analyse von Einsatzf{\"a}llen voraus, die in diesem Rahmen nicht geleistet werden kann.}, language = {de} } @techreport{OlschewskiBluhmFirnkornetal.2023, author = {Olschewski, Detlef and Bluhm, Andr{\´e} and Firnkorn, Joerg and Lucieri, Adriano and Palacio, Sebastian and Streppel, Yeji and Zednik, Carlos and G{\"o}rge, Rebekka and Poretschkin, Maximilian and Becker, Nikolas and Zielke, Thomas and Kruschel, Christian and Neumann-Brosig, Matthias and B{\"a}uerle, Stephen and Eifert, Marton and L{\´o}pez, Erik Martori and Assion, Felix and Seyerlein-Klug, Annegrit and Schmid, Ute and Haufe, Stefan and Gautier, Antoine and Bieringer, Lukas and Besold, Tarek R. and Cremers, Armin B.}, title = {DIN SPEC 92001-3 Artificial Intelligence - Life Cycle Processes and Quality Requirements - Part 3: Explainability}, publisher = {Beuth Verlag}, pages = {24}, year = {2023}, abstract = {DIN SPEC 92001-3 Artificial Intelligence - Life Cycle Processes and Quality Requirements. Artificial Intelligence has become a game-changer, but its impact must be approached responsibly. This is the third document in a series, and it aims to ensure that AI systems are developed, deployed, and used efficiently, responsibly, and in a trustworthy way. It focuses on "Explainability" - the ability to understand how AI makes decisions. This DIN SPEC 92001-3 provides a domain-independent guide on promoting explainability throughout the AI system's life cycle. It tackles "opacity", describing sources and effects of opacity in AI and how explanations can mitigate them. The goal is to foster a better understanding and effective use of Explainable AI across various applications, fostering principles of trust and transparency in AI-based systems. This DIN SPEC is the result of „Zertifizierung von Standard-KI-Anwendungen (Zertifizierte KI project)" https://www.zertifizierte-ki.de/. The publication is available for free at Beuth Verlag GmbH www.beuth.de - plus the search for "DIN SPEC 92001-3"}, language = {en} } @inproceedings{Kramann2023, author = {Kramann, Guido}, title = {AOGscript - Design of a Stand-Alone Scripting Language for the Generation of Music. Proceedings of the International Symposium on Ubiquitous Music, 2023}, series = {Konferenz: 13th International Symposium on Ubiquitous Music 2023 (Ubimus23) , Ulster University, Derry~Londonderry, Northern Ireland, 2-4 November, 2023}, booktitle = {Konferenz: 13th International Symposium on Ubiquitous Music 2023 (Ubimus23) , Ulster University, Derry~Londonderry, Northern Ireland, 2-4 November, 2023}, publisher = {Zenodo}, isbn = {978-65-00-85069-7}, doi = {10.5281/zenodo.10670220}, pages = {95 -- 109}, year = {2023}, abstract = {Ubiquitous Music is an interdisciplinary research area that combines methodologies from music, computer science, education, creativity studies, human sciences and engineering. The Ubiumus 2023 symposium, held at Ulster University and North West Regional College in Derry~Londonderry, Northern Ireland, included contributions on the following topics: Rapid Prototyping and Live Environments Ecological Approaches to Ubiquitous Music Ubiquitous Music Creative Practices, Tools and Influences The symposium also included a number of artistic contributions and workshops, which are also discussed in the proceedings volume. A number of events (including all paper presentations, an invited lecture, a panel discussion, and a keynote and associated performance) were also documented via video, with a link available in this Proceedings volume.}, language = {en} } @inproceedings{Guido2023, author = {Guido, Kramann}, title = {AOGscript, Generative Code as Conceptual Artwork: Giving Space to Astonishment. Proceedings of xCoAx 2023}, series = {Konferenz: xCoAx 2023 11th Conference on Computation, Communication, Aesthetics \& X}, booktitle = {Konferenz: xCoAx 2023 11th Conference on Computation, Communication, Aesthetics \& X}, publisher = {i2ADS}, address = {Porto, Portugal}, isbn = {978-989-9049-52-9}, doi = {10.34626/xcoax.2023}, pages = {401 -- 408}, year = {2023}, language = {en} } @unpublished{TranconyWidemannLepper, author = {Tranc{\´o}n y Widemann, Baltasar and Lepper, Markus}, title = {A theory of conversion relations for prefixed units of measure}, doi = {10.48550/arXiv.2212.11580}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-31984}, pages = {1 -- 45}, abstract = {Units of measure with prefixes and conversion rules are given a formal semantic model in terms of categorial group theory. Basic structures and both natural and contingent semantic operations are defined. Conversion rules are represented as a class of ternary relations with both group-like and category-like properties. A hierarchy of subclasses is explored, each satisfying stronger useful algebraic properties than the preceding, culminating in a direct efficient conversion-by-rewriting algorithm.}, language = {en} } @incollection{AndreasDaniel2022, author = {Andreas, Johannsen and Daniel, Kant}, title = {IT-Governance-, Risiko- und Compliance-Management (IT-GRC) - Ein kompetenzorientierter Ansatz f{\"u}r KMU}, series = {Faktor Mensch}, booktitle = {Faktor Mensch}, editor = {Weber, Kristin and Reinheimer, Stefan}, publisher = {Springer Vieweg}, address = {Wiesbaden}, doi = {10.1007/978-3-658-34524-2_15}, publisher = {Technische Hochschule Brandenburg}, pages = {275 -- 294}, year = {2022}, abstract = {Kleine und mittlere Unternehmen aller Branchen versuchen sich nach wie vor angemessen mit den Herausforderungen der Globalisierung und der digitalen Transformation auseinanderzusetzen. Sie bilden in diesem Zusammenhang wachsende Kompetenz in der Produktionsautomatisierung (Industrie 4.0) und in digitalen Gesch{\"a}fts- und Verwaltungsprozessen aus. In Bezug auf IT-GRC bleiben KMU demgegen{\"u}ber faktisch oft noch unreif. Bestehende Ans{\"a}tze des IT-Governance-, Risiko- und Compliance-Managements sind noch zu wenig f{\"u}r KMU ausgestaltet. Das Kapitel stellt vor diesem Hintergrund einen zun{\"a}chst aus der Literatur abgeleiteten, und dann zusammen mit Feedback von 14 IT-GRC Experten aufgestellten, kompetenzorientierten Ansatz zur Wahrnehmung und Messung des IT-Governance-, Risiko- und Compliance-Managements in KMU vor. Der Ansatz enth{\"a}lt sechs relevante Kompetenzkategorien. Das Kapitel stellt dann zwei abgeleitete, webbasierte Tools zur Messung und Erfassung der Handlungsbedarfe und zur Unterst{\"u}tzung von Management-Maßnahmen vor. Der Ansatz sowie die prototypisch realisierten Tools unterst{\"u}tzen das IT-GRC-Management von KMU gem{\"a}ß ihrem Reifegrad und bedarfsorientiert. Bei der Unterst{\"u}tzung wird der Fokus darauf gelegt, KMU bei der Umsetzung der st{\"a}ndig wachsenden IT-GRC-Anforderungen schlanke und konkrete Methoden, Werkzeuge und Hilfsmittel an die Hand zu geben und die verschiedenen Stakeholder einzubinden.}, subject = {Klein- und Mittelbetrieb}, language = {de} }