TY - CHAP A1 - Frosch, Katharina T1 - Scan to Learn: A Lightweight Approach for Informal Mobile Micro-Learning at the Workplace T2 - Konferenz: IARIA The Fifteenth International Conference on Mobile, Hybrid, and On-line Learning; Venice (Italy) N2 - Informal learning at the workplace is a crucial ingredient in updating and upskilling today's workforce, but in many jobs, informal learning opportunities are scarce. Bite-sized learning via mobile devices (Mobile Micro-Learning, MML) can be a powerful means to enhance informal work-related learning also in such learning-deprived fields. Based on good practices of recent MML implementations, a lightweight approach is developed. It involves an instructional blueprint and an open-source, low-threshold technology for MML, and meets the specific needs of workers in learning-deprived fields. The main idea is a scan-to-learn system where Quick Response (QR) codes are attached to physical objects in the work environment. Workers can scan the QR codes to learn and are directed to short, interactive learning nuggets. For evaluation, a proof-of-concept is provided. Y1 - 2023 SN - 978-1-68558-081-0 SP - 53 EP - 61 PB - IARIA ER - TY - CHAP A1 - Weber, Kristin A1 - Veit, David A1 - Johannsen, Andreas ED - Wildau, Technische Hochschule T1 - Anforderungen an die IT-Dokumentation aus Sicht von Informationssicherheit und Datenschutz T2 - Konferenz: Angewandte Forschung in der Wirtschaftsinformatik (AKWI), Heide, 2020/ Konferenzband: Angewandte Forschung in der Wirtschaftsinformatik 2020: Tagungsband zur 33. AKWI-Jahrestagung am 14.09.2020 ausgerichtet von der Hochschule Karlsruhe - Wirtschaft und Technik Y1 - 2020 SN - 978-3-944330-66-2 PB - mana-Buch CY - Heide ER - TY - JOUR A1 - Johannsen, Andreas A1 - Kant, Daniel T1 - IT-Governance, Risiko- und Compliance-Management (IT‑GRC) – Ein Kompetenz-orientierter Ansatz für KMU JF - HMD Praxis der Wirtschaftsinformatik KW - IT-Governance KW - IT-Risikomanagement KW - IT-Compliance KW - Security Awareness KW - IT-GRC Reifegrad KW - KMU Y1 - 2020 U6 - https://doi.org/10.1365/s40702-020-00625-8 PB - Springer Vieweg CY - Wiesbaden ER - TY - CHAP A1 - Levina, Olga T1 - Transparency of Data Origin and Business Value as Factors for the Assessment of Opportunities and Risks of Machine Learning- based Systems T2 - AI4EU Workshop: The Culture of Trustworthy AI. Public debate, education, practical learning, Venice, 2021 Y1 - 2021 ER - TY - CHAP A1 - Hildebrandt, Mario A1 - Altschaffel, Robert A1 - Lamshöft, Kevin A1 - Lange, Mathias A1 - Szemkus, Martin A1 - Neubert, Tom A1 - Vielhauer, Claus A1 - Ding, Yongjian A1 - Dittmann, Jana T1 - Threat Analysis of Steganographic and Covert Communication in Nuclear I&C Systems T2 - Konferenz: International Conference on Nuclear Security: Sustaining and Strengthening Efforts (ICONS), Vienna, Austria, 2020/ Konferenzband: International Conference on Nuclear Security: Sustaining and Strengthening Efforts N2 - Steganographic and covert communication is increasingly used for hiding attacks. Often information hiding is used by attackers in advanced persistent threats in order to operate without being noticed. Attackers might use it to hide data exfiltration or control channels for persistent malware. The paper analyzes potential threats to operational technology by investigating different communication protocols towards their suitability as cover channels. Using a generalized network architecture model and the communication flows of nuclear power plants, the attack potential using information hiding is exemplary assessed. An example for a supply chain attack for command injection is given on the foundation of the OPC UA protocol and an off-theshelf programmable logic controller. Subsequently, recommendations for a strategic and operational preparation for operators towards the prevention and detection of information hiding attacks are derived. Y1 - 2020 UR - https://www.researchgate.net/publication/350966454_Threat_Analysis_of_Steganographic_and_Covert_Communication_in_Nuclear_IC_Systems PB - IAEA CY - Vienna, Austria ER - TY - JOUR A1 - Koldeweij, Robin B. J. A1 - Kant, Pallav A1 - Harth, Kirsten A1 - Ruiter, Rielle de A1 - Gelderblom, Hanneke A1 - Snoeijer, Jacco H. A1 - Lohse, Detlef A1 - Limbeek, Michiel A. J. van T1 - Initial solidification dynamics of spreading droplets JF - Physical Review Fluids N2 - When a droplet is brought in contact with an undercooled surface, it wets the substrate and solidifies at the same time. The interplay between the phase transition effects and the contact-line motion, leading to its arrest, remains poorly understood. Here we reveal the early solidification patterns and dynamics of spreading hexadecane droplets. Total internal reflection imaging is employed to temporally and spatially resolve the early solidification behavior. With this, we determine the conditions leading to the contact-line arrest. We quantify the overall nucleation behavior, i.e., the nucleation rate and the crystal growth speed and show its sensitivity to the applied undercooling of the substrate. We also show that for strong enough undercooling it is the rapid growth of the crystals which determines the eventual arrest of the spreading contact line. By combining the Johnson-Mehl-Avrami-Kolmogorov nucleation theory and scaling relations for the spreading, we calculate the temporal evolution of the solid area fraction, which is in good agreement with our observations. Y1 - 2021 UR - https://link.aps.org/doi/10.1103/PhysRevFluids.6.L121601 U6 - https://doi.org/10.1103/PhysRevFluids.6.L121601 SN - 2469-990X IS - 12 PB - American Physical Society ER - TY - JOUR A1 - Stannarius, Ralf A1 - Harth, Kirsten T1 - The structure of disintegrating defect clusters in smectic C freely suspended films JF - Soft Matter N2 - Disclinations or disclination clusters in smectic C freely suspended films with topological charges larger than one are unstable. They disintegrate, preferably in a spatially symmetric fashion, into single defects with individual charges of +1, which is the smallest positive topological charge allowed in polar vector fields. While the opposite process of defect annihilation is well-defined by the initial defect positions, disintegration starts from a singular state and the following scenario including the emerging regular defect patterns must be selected by specific mechanisms. We analyze experimental data and compare them with a simple model where the defect clusters adiabatically pass quasi-equilibrium solutions in one-constant approximation. It is found that the defects arrange in geometrical patterns that correspond very closely to superimposed singular defect solutions, without additional director distortions. The patterns expand by affine transformations where all distances between individual defects scale with the same time-dependent scaling factor proportional to the square-root of time. Y1 - 2023 UR - https://pubs.rsc.org/en/content/articlelanding/2023/sm/d3sm00808h U6 - https://doi.org/https://doi.org/10.1039/d3sm00808h IS - 19 SP - 6109 EP - 6115 PB - Royal Society of Chemistry ER - TY - JOUR A1 - Klopp, Christoph A1 - Trittel, Torsten A1 - Harth, Kirsten A1 - Stannarius, Ralf T1 - Coalescence of biphasic droplets embedded in free standing smectic A films JF - Soft Matter N2 - We investigate micrometer-sized flat droplets consisting of an isotropic core surrounded by a nematic rim in freely suspended smectic A liquid-crystal films. In contrast to purely isotropic droplets which are characterized by a sharp edge and no long-range interactions, the nematic fringe introduces a continuous film thickness change resulting in long-range mutual attraction of droplets. The coalescence scenario is divided in two phases. The first one consists in the fusion of the nematic regions. The second phase involves the dissolution of a thin nematic film between the two isotropic cores. The latter has many similarities with the rupture of thin liquid films between droplets coalescing in an immiscible viscous liquid. Coalescence of biphasic droplets in free-standing smectic films is controlled in part by the rupture of a thin nematic membrane separating the isotropic droplet cores. Y1 - 2023 UR - https://pubs.rsc.org/en/content/articlelanding/2024/sm/d3sm01549a U6 - https://doi.org/10.1039/d3sm01549a SN - 1744-683X VL - 20 IS - 5 SP - 1036 EP - 1046 PB - Royal Society of Chemistry ER - TY - CHAP A1 - Johannsen, Andreas A1 - Maurer, Robert A1 - Stockhausen, Pablo ED - Wolf, Martin T1 - Konzeption eines Machine-Learning-Verfahrens zum Lösen von Green Vehicle Routing Problemen. T2 - Konferenz: Jahrestagung des Arbeitskreises Wirtschaftsinformatik an Hochschulen für Angewandte Wissenschaften im deutschsprachigen Raum (AKWI), Berlin, 2022/ Konferenzband: Angewandte Forschung in der Wirtschaftsinformatik 2022: Tagungsband zur 35. Jahrestagung des Arbeitskreises Wirtschaftsinformatik an Hochschulen für Angewandte Wissenschaften im deutschsprachigen Raum (AKWI) vom 11.09. bis 13.09.2022, ausgerichtet von der Hochschule für Technik und Wirtschaft Berlin (HTW Berlin) und der Hochschule für Wirtschaft und Recht Berlin (HWR Berlin) Y1 - 2022 SN - 978-3-95545-409-8 U6 - https://doi.org/10.30844/AKWI_2022_17 N1 - Band: 35 PB - GITO CY - Berlin ER - TY - CHAP A1 - Stockhausen, Pablo A1 - Johannsen, Andreas A1 - Maurer, Robert ED - Krupka, Daniel ED - Federrath, Hannes ED - Demmler, Daniel T1 - Konzeption eines Machine-Learnings-Verfahrens zum Lösen von Green Vehicle Routing Problemen T2 - Konferenz: Informatik 2022, Lecture Notes in Informatics (LNI), Bonn, 2022/ Konferenzband: Informatik 2022 Fachtagung vom 26.-30. September 2022, Hamburg/ Band: P-326 Y1 - 2023 SN - 978-3-88579-720-3 U6 - https://doi.org/10.18420/inf2022_75 SP - 885 EP - 897 PB - Gesellschaft für Informatik CY - Bonn ER - TY - CHAP A1 - Johannsen, Andreas A1 - Eifert, Felix Friedrich A1 - Dobkowicz, Matthias A1 - Duhn, Melanie ED - Wolf, Martin R. T1 - Ein Ansatz zur Messung von Cloud-Kooperationsfähigkeit im IT-Mittelstand T2 - Angewandte Forschung in der Wirtschaftsinformatik 2019 Y1 - 2019 SN - 978-3-944330-62-4 SP - 244 EP - 255 PB - mana-Buch CY - Heide ER - TY - CHAP A1 - Johannsen, Andreas T1 - Nachgefragt: Schnittstellen als Schlüssel für die vernetzte Wirtschaft? T2 - Vernetzte Wertschöpfung. Themenheft Mittelstand-Digital Y1 - 2019 UR - https://www.bmwk.de/Redaktion/DE/Publikationen/Mittelstand/mittelstand-digital-vernetzte-wertschoepfung.html SP - 24 EP - 25 PB - Bundesministerium für Wirtschaft und Energie CY - Berlin ER - TY - INPR A1 - Brasche, Ulrich T1 - Climate justice - dimensions and conflicts N2 - Probably no-one will publicly admit that justice is not important to him. The allegation of injustice is used to describe moral positions and justify demands. However, there is no simple and unambiguous description of just positions or just actions. To overcome the man-made climate crisis, a fair distribution of benefits and burdens is called for. Some stakeholders also use the argument of justice to disguise their interests. The question to be clarified is: Who may cause how much damage to whom and who must make what efforts to compensate for the damage and prevent future damage? This text reports on attempts to establish an ethical foundation for climate justice and on international political activities that claim to achieve greater climate justice. Y1 - 2024 ER - TY - JOUR A1 - Lindauer, Friederike T1 - Fehlerkultur als Erfolgsfaktor- Fehler als Lernanlass interpretieren und in HR-Strategien integrieren JF - Abacus Umantis N2 - Diese Forschung untersucht die Bedeutung einer offenen Fehlerkultur für den Erfolg von Organisationen. Ziel ist es, die Auswirkungen einer Learning-from-Failure Culture (LFFC) auf Innovationskraft und Resilienz zu analysieren. Durch Literaturrecherche, Umfragen und Fallstudien sollen Handlungsempfehlungen für HR-Verantwortliche und Führungskräfte entwickelt werden. Erwartet wird, dass eine positive Fehlerkultur das Lernen und die Zusammenarbeit fördert und die Innovationsfähigkeit steigert. Die Ergebnisse sollen als Grundlage für Schulungsprogramme und HR-Strategien dienen, um die Fehlerkultur in Unternehmen zu stärken. Y1 - 2025 SP - 1 EP - 13 ER - TY - RPRT A1 - Frosch, Katharina A1 - Damus, Martha A1 - Haberland, Steffi A1 - Hädicke, Svenja A1 - Lindauer, Friederike A1 - Winkel, Carmen T1 - Lehren mit KI: Talk2Transform (T2T) T2 - Wie KI Studium und Lehre verändert Anwendungsfelder, Use-Cases und Gelingensbedingungen Y1 - 2025 UR - https://hochschulforumdigitalisierung.de/wp-content/uploads/2025/04/HFD_AP_87_Wie_KI_Studium_und_Lehre_veraendert_final.pdf SP - 23 EP - 25 PB - Hochschulforum Digitalisierung ER - TY - CHAP A1 - Fitz, Lukas R. G. A1 - Veldyaeva, Ekaterina A1 - Teutenberg, Lukas A1 - Scheeg, Michaela A1 - Scheeg, Jochen T1 - Puzzle away the Puzzledness: Action-Design Study of an Educational Escape Room for Intervention in SMEs’ Perception towards ICT Adoption T2 - Konferenz: 57th Hawaii International Conference on System Sciences (HICSS); Honolulu, HI, USA N2 - Digital transformation initiatives in small and medium-sized enterprises (SME) are often hampered by individual practitioners' perceptions of information and communication technology (ICT). This research employs an educational escape room (ER) game for an intervention towards informed decision-making on ICT adoption in SMEs. ER design and implementation are elaborated and consequently tested with SME practitioners, all embedded in an action-design study based on a qualitative research methodology. The result highlights a trade-off between creating immersive game experiences and achieving learning objectives. Still, the outcome implies an impact on players' perception of ICT integrated in the ER. The findings contribute to the emerging field of serious games for learning and shed light on the potential of game-based interventions for SMEs. Y1 - 2023 UR - https://hdl.handle.net/10125/107027 SN - 978-0-9981331-7-1 U6 - https://doi.org/10.24251/HICSS.2024.642 SP - 5347 EP - 5356 ER - TY - RPRT A1 - Scheeg, Jochen A1 - Scheeg, Michaela A1 - Fitz, Lukas R. G. T1 - "Ich will loslegen"-Studie: Wie ticken Unternehmen die digital loslegen wollen? N2 - „Ich will loslegen!“ (IWL). Dieser Ausruf spiegelt die Motivation der befragten Unternehmer*innen zu einem Zeitpunkt wider, an dem sie sich entschlossen haben, ein erstes oder neues Digitalisierungsprojekt zu initiieren. Um aktiv eine Unterstützung für das Vorhaben anzufragen, beantworteten kleinste, kleine und mittlere Unternehmen (KKMU) die 100 Fragen des IST-1-Fragebogens. Unsere IWL-Studie beinhaltet die Analyse der Antworten der Unternehmer*innen und ermöglicht neue Erkenntnisse. Sie zeigt Bedürfnisse und Widersprüche im Hinblick auf Digitalisierungsvorhaben auf. Wo setzen KKMU ihren Fokus, wie handeln sie und welche Potenziale und Hürden offenbaren sich im Kontext digitaler Lösungen? Die verschiedenen Punkte werden in der vorliegenden Fassung anhand von Hypothesen erläutert und abschließend diskutiert. Y1 - 2021 UR - https://ifii.eu/iwl-studie-wie-ticken-unternehmen-die-digital-loslegen-wollen N1 - Berichtsart: Studie; Institution: Institut für Innovations- und Infomationsmanagement GmbH, Werder und Brandenburg an der Havel, 2021 ER - TY - CHAP A1 - Fitz, Lukas R. G. A1 - Scheeg, Jochen T1 - Propositions towards the Impact of Moral Values in Information System Design on Information System Success Depicted by the DeLone & McLean Information System Success Model T2 - Proceedings of the 18th International Conference on e-Business - Volume 1: E-DaM, Lieusaint - Paris, France KW - Moral Values KW - Information System Design KW - Information System Success Y1 - 2021 SN - 978-989-758-527-2 U6 - https://doi.org/10.5220/0010626101950206 SN - 2184-772X SP - 195 EP - 206 PB - SciTePress ER - TY - JOUR A1 - Fitz, Lukas R. G. A1 - Scheeg, Michaela A1 - Scheeg, Jochen T1 - Amplifying Human Factors in the Inquiry of SMEs’ Needs in Digitalization Collaborations with External Service Providers BT - 3rd International Conference on Industry 4.0 and Smart Manufacturing JF - Procedia Computer Science KW - Digitalization KW - SME KW - Human-Centered Design KW - Open Innovation Y1 - 2022 U6 - https://doi.org/10.1016/j.procs.2022.01.257 SN - 1877-0509 VL - 200 SP - 595 EP - 601 PB - Elsevier ER - TY - JOUR A1 - Scheeg, Jochen A1 - Dzielinski, Patrick A1 - Fitz, Lukas R. G. T1 - Analyse von Digitalen Reifegradmodellen für Kleine und Mittlere Unternehmen/Analysis of Digital Maturity Models for SMEs Y1 - 2020 UR - https://ifii.eu/analysis-digital-maturity-models4sme PB - Institut für Innovations- und Informationsmanagement (ifii) ER - TY - JOUR A1 - Wagener, Jan A1 - Fitz, Lukas R. G. T1 - How to assemble an Automatic Water Dispenser System – Design of a Learning Station feat. Augmented Reality KW - augmented realiy KW - learning KW - industrial sector Y1 - 2022 UR - https://www.usf.edu/business/documents/desrist/paper_113.pdf PB - University of South Florida ER - TY - CHAP A1 - Fitz, Lukas R. G. A1 - Scheeg, Jochen T1 - What is Digital about Digital Innovation? An Ontological Discussion of Digitality T2 - Konferenz: 29th Americas Conference on Information Systems N2 - "Digital" is a popular adjective for concepts related to electronic, computerized or networked processes in current research and practice. From an ontological-theoretical perspective, the prevalence of digital things triggers the question, how Digitality itself could be conceptualized. This article studies the ontology of Digitality and consequently discusses Digital Innovation (DI) from a new perspective. First, literature on Digitality is analyzed. Based on the findings, an ontological conceptual framework of Digitality (OCFD) is proposed. It describes four layers of Digitality: physical foundations, virtuality, digital culture and world, and digital metaphysics. From a human perspective, requirements to grasp and embody Digitality are highlighted, as well as the expansion of reality. Finally, Digitality is discussed as a paradigm of DI and exemplary digital phenomena are projected onto the OCFD. This paper contributes to DI research and practice through theory-building towards a better understanding of ontological characteristics and practical implications of Digitality in DI. Y1 - 2023 PB - Panama City, Panama ER - TY - THES A1 - Radke, Niclas T1 - Entwicklung einer mobilen Incident-Response-Netzwerksensorik zur Analyse von Datenverkehr in kompromittierten Netzwerken N2 - Das Ziel der vorliegenden Arbeit ist es, die These zu bestätigen, dass sich eine mobile Incident-Response-Netzwerksensorik in einer zuvor unbekannten Netzwerkumgebung innerhalb eines festgelegten Zeitraums installieren lässt und die forensische Analyse entscheidend unterstützen kann. Dazu wurden Anforderungen an die mobile Netzwerksensorik mithilfe von zwei Experteninterviews erhoben, deren Erfüllung an die Bestätigung der These gekoppelt ist. Zur Umsetzung der Anforderungen wurden Soft- und Hardwarekomponenten ausgewählt, die in Kombination die Netzwerksensorik bilden. Bei der Softwareauswahl zeigte sich, dass die Plattformlösung Security Onion aufgrund der Vielzahl implementierter Softwarekomponenten, der umfangreichen Dokumentation und der Architektur besser geeignet ist, die Projektanforderungen zu erfüllen und damit die These zu bestätigen, als Clear NDR. Durch drei Versuche konnte die These erfolgreich bestätigt werden. Damit liefert die Arbeit wichtige Grundlagen für die Implementierung einer mobilen Netzwerksensorik. Durch weitere Versuche und die in dieser Arbeit vorgestellten Hardwareempfehlungen kann in Zukunft eine praxistaugliche mobile Netzwerksensorik in Betrieb genommen werden. KW - Netzwerksicherheit KW - Incident-Response KW - IDS KW - Security Onion KW - Clear NDR Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-33608 PB - Technische Hochschule Brandenburg CY - Brandenburg an der Havel ER - TY - THES A1 - Schumacher, Jan Gregor T1 - Untersuchung von Response-Optionen der Wazuh Endpoint-Detection zur Isolierung verdächtiger Endgeräte N2 - Diese Arbeit entwickelt und realisiert automatisierte Reaktionsme-chanismen zur Netzwerkisolierung kompromittierter Endgeräte mit-tels der Open-Source-Plattform Wazuh. Es werden zwei Ansätze als Proof of Concept implementiert und verglichen: eine host-basierte Isolierung durch Deaktivierung der lokalen Netzwerk-schnittstelle (Windows/Linux) und eine netzwerk-basierte Methode, die den Switch-Port des Geräts zentral abschaltet. Die Validierung in einer Testumgebung zeigt, dass die host-basierte Methode eine schnelle Reaktion ermöglicht, während der netzwerk-basierte An-satz unempfindlicher gegenüber Manipulationen auf dem Host ist. Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-33624 PB - Technische Hochschule Brandenburg CY - Brandenburg an der Havel ER - TY - JOUR A1 - Vogel, Sven A1 - Wölfer, Christian A1 - Ramirez-Diaz, Diego A1 - Flassig, Robert A1 - Sundmacher, Kai A1 - Schwille, Petra T1 - Symmetry Breaking and Emergence of Directional Flows in Minimal Actomyosin Cortices JF - Cells N2 - Cortical actomyosin flows, among other mechanisms, scale up spontaneous symmetry breaking and thus play pivotal roles in cell differentiation, division, and motility. According to many model systems, myosin motor-induced local contractions of initially isotropic actomyosin cortices are nucleation points for generating cortical flows. However, the positive feedback mechanisms by which spontaneous contractions can be amplified towards large-scale directed flows remain mostly speculative. To investigate such a process on spherical surfaces, we reconstituted and confined initially isotropic minimal actomyosin cortices to the interfaces of emulsion droplets. The presence of ATP leads to myosin-induced local contractions that self-organize and amplify into directed large-scale actomyosin flows. By combining our experiments with theory, we found that the feedback mechanism leading to a coordinated directional motion of actomyosin clusters can be described as asymmetric cluster vibrations, caused by intrinsic non-isotropic ATP consumption with spatial confinement. We identified fingerprints of vibrational states as the basis of directed motions by tracking individual actomyosin clusters. These vibrations may represent a generic key driver of directed actomyosin flows under spatial confinement in vitro and in living systems. Y1 - 2020 UR - https://www.mdpi.com/2073-4409/9/6/1432 U6 - https://doi.org/10.3390/cells9061432 SP - 1 EP - 10 PB - MDPI ER - TY - CHAP A1 - Veldyaeva, Ekaterina A1 - Fitz, Lukas R. G. A1 - Scheeg, Jochen T1 - Developing Digital Competencies in Small and Medium-Sized Enterprises Through Microlearning Applications: A Research Agenda T2 - Konferenz: Perspectives in Business Informatics Research 22nd International Conference on Business Informatics Research, BIR 2023, Ascoli Piceno, Italy, September 13–15, 2023, Proceedings N2 - This article presents a research outline on the use of microlearning applications to develop digital competencies in Small and Medium-sized Enter-prises (SMEs). The digital transformation of businesses has become essential for their survival, and SMEs need to develop digital competencies (DC) to remain competitive in the market. Microlearning (ML), a form of learning that involves small, bite-sized learning modules, has been gaining popularity in recent years as a way to efficiently and effectively develop skills. Through a semi-systematic literature review approach, our study examines prevalent knowledge in the area of ML and DC and discusses interrelations. As a result, we propose a research roadmap consisting of six research questions targeting four dimensions of ML for DC development in SMEs: 1) context, 2) formats, 3) reward system, and 4) complexity level. Y1 - 2023 U6 - https://doi.org/10.1007/978-3-031-43126-5_7 SP - 41 EP - 58 ER - TY - CHAP A1 - Fitz, Lukas R. G. A1 - Scheeg, Jochen T1 - Small Businesses Participating in Digital Platform Ecosystems - A Descriptive Literature Review T2 - Digital Transformation. PLAIS EuroSymposium 2023. Lecture Notes in Business Information Processing N2 - The emergence of digital multi-sided platforms has disrupted day-to-day business in many industries. Nowadays, many small businesses participate in digital platform (DP) ecosystems and act as value creators or complementors. Investigating the small business perspective does not have a rich tradition in platform research yet. In response, this paper presents a systematic literature review (SLR) analyzing the thematic points of focus and highlighting new avenues for information systems and small business research. We find that objectives related to digital transformation, digital strategy- and business model-development, and DP adoption are fundamental topics in the conjunction of small business and DP ecosystems. Based on the findings, an agenda for future research is developed, including propositions for practice-oriented and human-centered approaches fostering sustilience, innovation capabilities and digital leadership competencies in small businesses facing DP ecosystem participation. Y1 - 2023 U6 - https://doi.org/10.1007/978-3-031-43590-4_3 ER - TY - JOUR A1 - Goschin, Tobias A1 - Vogel, Mathias A1 - Flassig, Robert T1 - Energy Technologies For Decarbonizing The Steel Processing Industry – A Numerical Study JF - IFAC-PapersOnLine N2 - This study analyzes approaches to decarbonize the energy supply of the secondary steel processing industry. Therefore, real data from a secondary steel production company is used in combination with state-of-the art low carbon energy supply technologies. Also, the use of waste heat from a pusher furnace for process integration is considered. The developed temporal process model allows holistic optimizing and expanding the steel making process system regarding techno-economic criteria. As we show, implementing the annual heat demand of a municipality shows that a nearly 100 % self-sufficient heat supply is possible. Y1 - 2022 UR - https://linkinghub.elsevier.com/retrieve/pii/S240589632200386X U6 - https://doi.org/https://doi.org/10.1016/j.ifacol.2022.07.001 VL - 55 IS - 9 SP - 1 EP - 5 PB - Elsevier ER - TY - JOUR A1 - Kant, Daniel A1 - Johannsen, Andreas A1 - Creutzburg, Reiner T1 - Analysis of IoT Security Risks based on the exposure of the MQTT Protocol JF - Electronic Imaging KW - Internet of Things KW - Industrial Internet of Thing KW - IoT KW - IIoT KW - MQTT KW - IoT protocol KW - IIoT protocol KW - IoT security KW - IIoT security KW - MQTT vulnerability Y1 - 2021 UR - https://itwirtschaft.de/wp-content/uploads/2021/02/2021_Electronic-Imaging_IoT_Security-BASIC-1.pdf U6 - https://doi.org/10.2352/ISSN.2470-1173.2021.3.MOBMU-096 N1 - Paper was created within the German program "Mittelstand (SME) 4.0 - Competence Center for IT Economy" of the Ministry for Economic Affairs and Energy VL - 33 SP - 096-1 EP - 096-8 PB - Society for Imaging Science and Technology ER - TY - CHAP A1 - Heidenreich, Michael A1 - Franczyk, Bogdan A1 - Johannsen, Andreas T1 - Evaluation study of an IT security measurement method for micro-enterprises T2 - Proc. of the International Conference on Electrical, Computer and Energy Technologies (ICECET 2022) 20-22 July 2022, Prague-Czech Republic KW - SME KW - IT security KW - Information security KW - Study Y1 - 2022 U6 - https://doi.org/10.1109/ICECET55527.2022.9873487 PB - IEEE ER - TY - CHAP A1 - Vogel, Mathias A1 - Goschin, Tobias A1 - Flassig, Robert T1 - Techno-economic analysis of excess wind energy utilization in the energy supply of residential quarters T2 - Konferenz: Symposium on Control of Power and Energy Systems (CPES), 2022/ Konferenzband:11th IFAC Symposium on Control of Power and Energy Systems (CPES 2022) Y1 - 2022 U6 - https://doi.org/10.32479/ijeep.8067 PB - Elsevier ER - TY - JOUR A1 - Trittel, Torsten A1 - Klopp, Christoph A1 - Harth, Kirsten A1 - Stannarius, Ralf T1 - Stability and Rupture of Liquid Crystal Bridges under Microgravity JF - Crystals KW - smectic liquid-crystals KW - Rayleigh-Plateau instability KW - TEXUS suborbital rocket KW - microgravity Y1 - 2022 U6 - https://doi.org/https://doi.org/10.3390/cryst12081092 VL - 12 IS - 8 PB - MDPI ER - TY - CHAP A1 - Wagner, Robin A1 - Kitzelmann, Emanuel A1 - Boersch, Ingo T1 - Mitigating Hallucination by Integrating Knowledge Graphs into LLM Inference – a Systematic Literature Review T2 - Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (Volume 4: Student Research Workshop) N2 - Large Language Models (LLMs) demonstrate strong performance on different language tasks, but tend to hallucinate – generate plausible but factually incorrect outputs. Recently, several approaches to integrate Knowledge Graphs (KGs) into LLM inference were published to reduce hallucinations. This paper presents a systematic literature review (SLR) of such approaches. Following established SLR methodology, we identified relevant work by systematically search in different academic online libraries and applying a selection process. Nine publications were chosen for indepth analysis. Our synthesis reveals differences and similarities of how the KG is accessed, traversed, and how the context is finally assembled. KG integration can significantly improve LLM performance on benchmark datasets and additionally to mitigate hallucination enhance reasoning capabilities, explainability, and access to domain-specific knowledge. We also point out current limitations and outline directions for future work. KW - LLMs KW - hallucination KW - knowledge graphs KW - inference KW - literature review Y1 - 2025 UR - https://aclanthology.org/2025.acl-srw.53.pdf U6 - https://doi.org/10.18653/v1/2025.acl-srw.53 SP - 795 EP - 805 PB - Association for Computational Linguistics CY - Vienna ER - TY - CHAP A1 - Kalbitz, Michael A1 - Vielhauer, Claus T1 - Automated forensic ink determination in handwritten documents by clustering T2 - 2019 27th European Signal Processing Conference (EUSIPCO) Ort: A Coruña, Spanien, 2. bis 6. September 2019 Y1 - 2019 SN - 978-9-0827-9703-9 SN - 978-90-827970-2-2 SN - 978-1-5386-7300-3 U6 - https://doi.org/10.23919/EUSIPCO.2019.8903107 SN - 2076-1465 SN - 2219-5491 SP - 1 EP - 5 PB - IEEE CY - New York ER - TY - INPR A1 - Tuset-Peiro, Pere A1 - Pilgermann, Michael A1 - Pegueroles, Josep A1 - Vilajosana, Xavier T1 - Assessing Cybersecurity of Internet-Facing Medical IT Systems in Germany & Spain Using OSINT Tools N2 - This paper investigates cybersecurity threats in medical IT (Information Technology) systems exposed to the Internet. To that end, we develop a methodology and build a data processing pipeline that allows to gather data from different OSINT (Open Source Intelligence) sources, and processes it to obtain relevant cybersecurity metrics. To validate its operation and usefulness, we apply it to two countries, Germany and Spain, allowing to study the main threats that affect medical IT systems in these countries. Our initial findings reveal that 20% of German hosts and 15% of Spanish hosts tagged as medical devices have at least one CVE (Common Vulnerabilities and Exposures) with a CVSS (Common Vulnerability Scoring System) graded as critical (i.e., value 8 or greater). Moreover, we found that 74% of CVEs found in German hosts are dated from earlier than 2020, whereas for Spanish hosts the percentage is 60%. This indicates that medical IT systems exposed to the Internet are seldom updated, which further increases their exposure to cyberthreats. Based on these initial findings, we finish the paper providing some insights on how to improve cybersecurity of these systems. Y1 - 2025 U6 - https://doi.org/10.20944/preprints202503.1340.v1 SP - 190 EP - 197 ER - TY - BOOK A1 - Kraska, Martin T1 - Engineering Calculations with SMath BT - First Steps N2 - Introduction to SMath Studio covering the topics installation, configuration, creating text and formulas, scientific units, graphics, embedded images. The tutorial takes approximately 2 hours to complete. KW - SMath KW - Software Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-33709 PB - Technische Hochschule Brandenburg CY - Brandenburg an der Havel ER - TY - JOUR A1 - Weber, Simon B. A1 - Stein, Stefan A1 - Pilgermann, Michael A1 - Schrader, Thomas T1 - Attack Detection for Medical Cyber-Physical Systems – A Systematic Literature Review JF - IEEE Access N2 - The threat situation due to cyber attacks in hospitals is emerging and patient life is at risk. One significant source of potential vulnerabilities is medical cyber-physical systems (MCPS). Detecting intrusions in this environment faces challenges different from other domains, mainly due to the heterogeneity of devices, the diversity of connectivity types, and the variety of terminology. To summarize existing results, we conducted a structured literature review (SLR) following the guidelines of Kitchenham et al. for SLRs in software engineering. We developed six research questions regarding detection approach, detection location, included features, adversarial focus, utilized datasets, and intrusion prevention. We identified that most researchers focused on an anomaly-based detection approach at the network layer. The primary focus was on the detection of malicious insiders. While several researchers used publicly available datasets for training and testing their algorithms, the lack of suitable datasets resulted in the development of testbeds consisting of various medical devices. Based on the results, we formulated five future research topics. First, the special conditions of hospital networks, the MCPS deployed within them, and the contrasts to other IT and OT environments should be examined. Thereupon, MCPS-specific datasets should be created that allow researchers to address the health domain’s unique requirements and possibilities. At the same time, endeavors aimed at standardization in this area should be supported and expanded. Moreover, the use of medical context for attack detection should be further explored. Last but not least, efforts for MCPS-tailored intrusion prevention should be intensified. This way, the emerging threat landscape can be addressed, IT security in hospitals can be improved, and patient health can be protected. Y1 - 2023 U6 - https://doi.org/10.1109/ACCESS.2023.3270225 IS - 11 SP - 41796 EP - 41815 PB - IEEE ER - TY - JOUR A1 - Jamil, Mahnoor A1 - Mihajloska Trpcheska, Hristina A1 - Popovska-Mitrovikj, Aleksandra A1 - Dimitrova, Vesna A1 - Creutzburg, Reiner T1 - Advancing Image Spam Detection: Evaluating Machine Learning Models Through Comparative Analysis JF - Applied Sciences N2 - Image-based spam poses a significant challenge for traditional text-based filters, as malicious content is often embedded within images to bypass keyword detection techniques. This study investigates and compares the performance of six machine learning models—ResNet50, XGBoost, Logistic Regression, LightGBM, Support Vector Machine (SVM), and VGG16—using a curated dataset containing 678 legitimate (ham) and 520 spam images. The novelty of this research lies in its comprehensive side-by-side evaluation of diverse models on the same dataset, using standardized dataset preprocessing, balanced data splits, and validation techniques. Model performance was assessed using evaluation metrics such as accuracy, receiver operating characteristic (ROC) curve, precision, recall, and area under the curve (AUC). The results indicate that ResNet50 achieved the highest classification performance, followed closely by XGBoost and Logistic Regression. This work provides practical insights into the strengths and limitations of traditional, ensemble-based, and deep learning models for image-based spam detection. The findings can support the development of more effective and generalizable spam filtering solutions in multimedia-rich communication platforms. KW - spam detection KW - image spam KW - machine learning KW - Support Vector Machine KW - XGBoost KW - Logistic Regression KW - ResNet50 KW - LightGBM KW - VGG16 Y1 - 2025 U6 - https://doi.org/10.3390/app15116158 SN - 2076-3417 VL - 15 IS - 11 PB - MDPI ER - TY - JOUR A1 - Pilgermann, Michael A1 - Stein, Stefan A1 - Schrader, Thomas A1 - Weber, Simon T1 - Angriffserkennung beim Betrieb von KRITIS gemäß IT-Sicherheitsgesetz 2.0 JF - Datenschutz und Datensicherheit N2 - Die Krankenhaus-IT sieht sich einer stetig zunehmenden Bedrohung der Sicherheit der Patientendaten und des Krankenhausbetriebes gegenüber. Der Gesundheitssektor gehört zu den Kritischen Infrastrukturen, die zunehmend strengeren Regelungen unterliegen. Jüngste Regulierung ist das IT-Sicherheitsgesetz 2.0, das unter anderem Maßnahmen zur Detektion von Angriffen fordert. Der Beitrag stellt vor, wie eine branchenspezifische Umsetzung dieser Anforderung aussehen könnte. Y1 - 2021 U6 - https://doi.org/10.1007/s11623-021-1525-z VL - 45 SP - 733 EP - 737 ER - TY - JOUR A1 - Nitze, André A1 - Wang, Tingting A1 - Jahn, Josephine A1 - Ali, Sabah A1 - Miesner, Timon T1 - Lessons learned from building sustainable municipal LoRaWan infrastructure JF - International Journal On Advances in Networks and Services N2 - Abstract—This paper introduces the LoRaWAN Collaboration Framework (LCF), a strategic blueprint for deploying and managing LoRaWAN infrastructures in smart cities with an emphasis on rural and small municipalities. LoRaWAN technology distinguishes itself by its capability to support long-range, low-power IoT applications, making it ideal for extensive and sparsely populated areas. The LCF aims to address common challenges in these settings, such as limited technical expertise, financial constraints, and the need for cross-municipal cooperation. It outlines roles and responsibilities across various stakeholders including municipal authorities, IT service providers, application developers, and end-users. The framework emphasizes the balance of technological, economic, social and ecological sustainability in line with the United Nations' Sustainable Development Goals. In this paper, we describe the experiences from several LoRaWAN projects in small towns and municipalities in Germany and give some insights to these use cases, the derived collaboration framework, and other arguments to consider before implementing LoRaWAN infrastructures. Y1 - 2024 VL - 17 IS - 3&4 SP - 59 EP - 68 PB - IARIA ER - TY - JOUR A1 - Schmietendorf, Andreas A1 - Nitze, André A1 - Hentschel, Jan T1 - Entscheidungskriterien für SaaS-Services bei KMUs - Ergebnisse einer empirischen Untersuchung JF - WI-MAW-Rundbrief / Gesellschaft für Informatik e. V., Fachausschuß Management der Anwendungsentwicklung und -wartung (WI-MAW) im FB Wirtschaftsinformatik Y1 - 2017 VL - 23.2017=41 IS - 1 SP - 13 EP - 20 ER - TY - CHAP A1 - Nitze, André ED - Schmietendorf, Andreas T1 - Contact-first Development - vom Open API (Swagger) basierten Vertrag zur Implementierung T2 - ESAPI 2017 : 1. Workshop Evaluation of Service-APIs 02. November 2017, Berlin Y1 - 2017 SN - 978-3-8440-5559-7 SP - 53 EP - 64 PB - Shaker verlag CY - Aachen ER - TY - JOUR A1 - Kiertscher, Tobias A1 - Nitze, André T1 - Erfahrungsbericht über Docker ohne Cloud JF - Java-Spektrum : Magazin für professionellen Einsatz von Java, Web-Technologien und XML Y1 - 2018 SN - 1431-4436 IS - 3/2018 SP - 20 EP - 24 ER - TY - CHAP ED - Nitze, André ED - Schmietendorf, Andreas T1 - Berliner Schriften zu modernen Integrationsarchitekturen: API-First/API-Management - Open APIs als Treiber der Digitalisierung T2 - Konferenz: Enterprise Computing Conference ; 2018 ; Hamburg/ Titel:API-First/API-Management - Open APIs als Treiber der Digitalisierung : Workshop im Rahmen der Enterprise Computing Conference, 19. April 2018, Hamburg N2 - Die Anzahl von mit Hilfe der Internettechnologie im Web zur Verfügung gestellten offenen API (Open APIs) zeigt ein exponentielles Wachstum. Auf der Grundlage kompositorisch zusammengesetzter APIs entstehen innovative Lösungen, die sich zunehmend als Treiber der Digitalisierung positionieren. Vor diesem Hintergrund gilt es, Open APIs aus der Perspektive der fachlichen Nutzung zu gestalten, so dass diese in möglichst vielfältigen Anwendungsszenarien stabil und nachhaltig verwendet werden können. In diesem Zusammenhang wird auch von einer „API first“-Strategie gesprochen. Die erste Session des Workshops widmet sich dieser Themenstellung, wobei u.a. auf Fragen der API-Gestaltung mit Hilfe einer OpenAPI bzw. Swagger Spezifikation eingegangen wird. Mit Aspekten des entwicklungsseitig und betrieblich benötigten API-Managements beschäftigt sich dann die zweite Session. Dabei soll sowohl auf Aspekte der Identifizierung und Authentifizierung konkreter API-Zugriffe als auch auf die Themenstellung einer DevOps-orientierten API-Bereitstellung eingegangen werden. Innovative Techniken, welche im Diskurs einer kompositorischen Softwareentwicklung verwendet werden können, stehen im Mittelpunkt der letzten Session. Dabei geht es zunächst um die durch Facebook propagierte Abfragesprache GraphQL, welche die Einbindung von httpbasierten APIs vereinfachen soll. Ein weiterer Beitrag beschreibt die Entwicklung einer mobil einsetzbaren Serviceapplikation, die umfangreichen Gebrauch von Open APIs macht. Dabei wird auf lokal installierte Entwicklungsumgebungen weitgehend verzichtet, d.h. auch diese findet Cloud-basiert statt. Der thematische Hintergrund dieses Workshops entstammt dem im letzten Jahr in Berlin durchgeführten ESAPI-Workshop (speziell dem World Café). Die Ergebnisse der dort diskutierten Fragen sind im letzten Beitrag dokumentiert. Y1 - 2018 SN - 978-3-8440-5927-4 IS - 18 SP - IV EP - 64 PB - Shaker CY - Aachen ER - TY - CHAP A1 - Thiers, Angelina A1 - L'Orteye, Annett A1 - Orlowski, Katja A1 - Schrader, Thomas T1 - Investigation of the Sensormonitor Training - Analysing Exercisers with one-dimensional and multidimensional Instability T2 - Konferenz: International Congress on Sports Science Research and Technology Support/ Titel: icSPORTS 2013 : Proceedings of the International Congress on Sport Science Research and Technology Support ; September 20-22, 2013, in Vilamoura, Algarve, Portugal N2 - The importance and the attractivity of the sensorimotor training is still growing. Up to now the impact of the training on the body is not yet fully investigated. Hence, nowadays the planning of the therapy is mainly based on the experiences of the physiotherapist and on the conditions of the practice. For the development of the therapy the physiotherapist is supported by manufacturer's information about the exercisers as well as by general assumptions regarding the sensorimotor training. For the validation of this information two setups were investigated. In the first part, the behavior of two students was studied on three exercisers. Here the EMG data and the motion data were analyzed. In the second part, the behavior of the left and the right body side was analyzed for 16 subjects. The study revealed that the major work for the maintenance of the equilibrium is done by the distal musculature. Furthermore, it was shown that there is a different behavior of the musculature at both body sides. Additionally, it has been proven that each test person had an individual behavior on the exercisers. Consequently, it would be hard to make general assumptions regarding the impact of the training on the body. Y1 - 2013 UR - http://www.scitepress.org/DigitalLibrary/Link.aspx?doi=10.5220/0004637700710078 SN - 978-989-8565-79-2 U6 - https://doi.org/10.5220/0004637700710078 SP - 71 EP - 78 PB - Science and Technology Publications CY - Vilamoura, Algarve, Portugal ER - TY - CHAP A1 - Nitze, André A1 - Wang, Tingting A1 - Jahn, Josephine A1 - Ali, Sabah T1 - Beyond Connectivity: A Sustainable Approach to Municipal LoRaWAN Infrastructure and Services T2 - Konferenz: ICDS 2024 : The Eighteenth International Conference on Digital Society; Barcelona, Spain N2 - This paper introduces the LoRaWAN Collaboration Framework (LCF), a strategic blueprint for deploying and managing LoRaWAN infrastructures in smart cities with an emphasis on rural and small municipalities. LoRaWAN technology is distinguished by its capability to support long-range, low-power IoT applications, making it ideal for extensive and sparsely populated areas. The LCF aims to address common challenges in these settings, such as limited technical expertise, financial constraints, and the need for cross-municipal cooperation. It outlines roles and responsibilities across various stakeholders including municipal authorities, IT service providers, application developers, and end-users. The framework emphasizes the balance of technological, economic, ecological, and social sustainability in line with the United Nations' Sustainable Development Goals. In this paper we describe the experiences from several LoRaWAN projects in small towns and municipalities, the derived framework, and future research directions towards ensuring the economic viability of the proposed model. Y1 - 2024 SP - 19 EP - 24 PB - IARIA ER - TY - CHAP A1 - Thiers, Angelina A1 - Meffofok, L. A1 - Orlowski, Katja A1 - Schrader, Kerstin A1 - Tietze, B. A1 - L'Orteye, Annett A1 - Schrader, Thomas T1 - Investigation of the Sensormonitor Training using Wireless Sensor Networks - Analyzing Three Different Exerciser T2 - Konferenz: International Conference on Healt Informatics (HEALTHINF)/ Titel: Proceedings of the International Conference on Health Informatics (HEALTHINF-2013) Y1 - 2013 SN - 978-989-5865-37-2 U6 - https://doi.org/10.5220/0004329004130416 SP - 413 EP - 416 PB - SCITEPRESS - Science and Technology Publications CY - Barcelona, Spain ER - TY - CHAP A1 - Schrader, Thomas A1 - Löwe, Katharina A1 - Pelchen, Lutz A1 - Beck, Eberhard ED - Beck, Eberhard T1 - Analyse der Patientensicherheit in medizinisches Prozessen: der OPT - Modell - Generator T2 - MedPro 2015, Medizinische Prozesse – Patienten - Sicherheit : Tagungsband ; Brandenburg an der Havel, 5. November 2015 Y1 - 2015 SP - 49 EP - 61 PB - Fachhochschule Brandenburg CY - Brandenburg an der Havel ER - TY - CHAP A1 - Schrader, Thomas A1 - Löwe, Katharina A1 - Pelchen, Lutz A1 - Beck, Eberhard T1 - Sicherheits- und Risikoanalyse in medizinischen Prozessen – das Open-Process-Task-Model T2 - MedPro 2015, Medizinische Prozesse – Patienten - Sicherheit : Tagungsband ; Brandenburg an der Havel, 5. November 2015 Y1 - 2015 SP - 38 EP - 48 PB - Fachhochschule Brandenburg CY - Brandenburg ER - TY - CHAP A1 - Hasche, Eberhard A1 - Ingwer, Patrick A1 - Creutzburg, Reiner A1 - Schrader, Thomas A1 - Laube, Frederick A1 - Sigwarth, Timo ED - Creutzburg, Reiner T1 - RED color spaces demystified - reverse engineering of RED gamma and RED color by spectral analysis of Xrite color charts and RED Scarlet-X Camera recording T2 - Mobile Devices and Multimedia: Enabling Technologies, Algorithms, and Applications 2016 : IS & T International Symposium on Electronic Imaging Science and Technology 2016 : San Francisco, California, USA, 14-18 February 2016 Y1 - 2017 SN - 978-1-5108-4600-5 PB - Curran Associates, Inc. CY - Red Hook, NY ER - TY - CHAP A1 - Thiers, Angelina A1 - l’Orteye, Annett A1 - Orlowski, Katja A1 - Schrader, Thomas ED - Cabri, Jan T1 - Analyzing the Sensorimotor Training Using Wireless Sensors: Studying the Effects of Balance Boards with Different Dimensions of Instability T2 - Sports Science Research and Technology Support : International Congress, icSPORTS 2013, Vilamoura, Algarve, Portugal, September 20-22, 2013. Revised Selected Papers KW - Sensorimotor training KW - EMG data KW - Motion data KW - Wireless sensors Y1 - 2015 SN - 978-331-91754-8-5 U6 - https://doi.org/10.1007/978-3-319-17548-5_5 SP - 57 EP - 71 PB - Springer CY - Cham ER - TY - CHAP A1 - Sigwarth, Timo A1 - Löwe, Katharina A1 - Beck, Eberhard A1 - Pelchen, Lutz A1 - Schrader, Thomas T1 - Conceptual ontology of prospective risk analysis in medical environments - the OPT-Model-Ontology T2 - 2015 IEEE Seventh International Conference on Intelligent Computing and Information Systems (ICICIS'15) : Faculty of Commuter & Information Sciences, Ain Shams University, Cairo, Egypt, 12-14 Dec. 2015 Y1 - 2015 SN - 978-1-5090-1950-2 SN - 978-1-5090-1949-6 U6 - https://doi.org/10.1109/IntelCIS.2015.7397202 SP - 88 EP - 93 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Schrader, Thomas A1 - Orlowski, Katja A1 - Thiers, Angelina A1 - Schrader, Kerstin A1 - l’Orteye, Annett T1 - Analyzes of Influencing Factors to the Sensorimotor Training - Technical Support Systems in the Physiotherapy T2 - Proceedings of the 2nd International Congress on Sports Sciences Research and Technology Support, 24. bis 26. Oktober 2014, Rom, Italien KW - Sensorimotor Training KW - EMG Data KW - Technical Support Systems Y1 - 2014 SN - 978-989-758-057-4 U6 - https://doi.org/10.5220/0005093000450052 VL - Vol. 1 SP - 45 EP - 52 PB - SciTePress, Science and Technology Publications CY - Setúbal, Portugal ER - TY - JOUR A1 - Liefold, Marius A1 - Wagner, Dennis A1 - Dück, Michael Sebastian A1 - Göcmez, E. A1 - Kinberger, B. A1 - Gründel, P. A1 - Gadegast, E. A1 - Beck, Eberhard A1 - Schrader, Thomas T1 - Konzeption und Entwicklung von mobilen Hard- und Softwarekomponenten zur Verbesserung der Schwangerenvorsorge in Ländern der 3. Welt JF - Geburtshilfe und Frauenheilkunde Y1 - 2016 U6 - https://doi.org/10.1055/s-0036-1593060 VL - 76 SP - P197 ER - TY - CHAP A1 - Schrader, Thomas A1 - Löwe, Katharina A1 - Pelchen, Lutz A1 - Beck, Eberhard T1 - Prospective, knowledge based clinical risk analysis: The OPT-model T2 - 2015 IEEE Seventh International Conference on Intelligent Computing and Information Systems (ICICIS) : Faculty of Commuter & Information Sciences, Ain Shams University, Cairo, Egypt, 12-14 Dec. 2015 Y1 - 2015 SN - 978-1-5090-1950-2 SN - 978-1-5090-1949-6 U6 - https://doi.org/10.1109/IntelCIS.2015.7397204 SP - 94 EP - 99 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Hasche, Eberhard A1 - Schrader, Thomas A1 - Creutzburg, Reiner T1 - Blackmagic Production Camera Raw Color Investigation by Spectral Analysis of Macbeth Color Charts T2 - Mobile Devices and Multimedia: Enabling Technologies, Algorithms, and Applications 2017 : IS & T International Symposium on Electronic Imaging Science and Technology 2017 : Burlingame, California, USA, 29 January-2 February 201 Y1 - 2017 SN - 978-1-5108-4625-8 SP - 22 EP - 33 PB - Curran Associates, Inc. CY - Red Hook, NY ER - TY - JOUR A1 - Orlowski, Katja A1 - Wagner, Dennis A1 - l'Orteye, Annett A1 - Ringk, Heike A1 - Kohl, Verena A1 - Schrader, Thomas T1 - Analysing the activation of the plantar flexor muscles during treadmill walking JF - Gait & Posture Y1 - 2017 U6 - https://doi.org/10.1016/j.gaitpost.2017.06.377 SN - 0966-6362 VL - 57 IS - Supplement 1 SP - 213 EP - 214 ER - TY - CHAP A1 - Craig, Kevin A1 - Fitz, Lukas R. G. A1 - Miller, Kasey T1 - IT Identity fostering User Innovation on Digital Platforms: The Role of Self-Esteem T2 - AMCIS 2025, 31st Americas Conference on Information Systems, Montréal, Canada, 2025 N2 - Digital platforms can grow by motivating users to explore new ways to use a wider range of affiliated products and services. This work explores the power of IT Identity to motivate such innovative use, through identity's ability to intrinsically motivate behavior. Data from 209 Amazon.com users indicates that IT Identity may cause Trying to Innovate with an IT, mediated by Self-Esteem. Y1 - 2025 UR - https://aisel.aisnet.org/cgi/viewcontent.cgi?article=1114&context=amcis2025 SP - 1 EP - 9 PB - Association for Information Systems ER - TY - JOUR A1 - Schrader, Thomas A1 - Tetzlaff, Laura A1 - Beck, Eberhard A1 - Mindt, Sebastian A1 - Geiss, Friederike A1 - Hauser, Katarina A1 - Franken, Christian T1 - Die Ähnlichkeit von Medikamentennamen als mögliche Ursache von Verwechslungen – eine Untersuchung von Daten aus der ambulanten Versorgung JF - Zeitschrift für Evidenz, Fortbildung und Qualität im Gesundheitswesen T2 - The similarity of drug names as a possible cause of confusion: Analysis of data from outpatient care KW - Medikamentennamen KW - Ambulante Versorgung KW - Unerwünschte Arzneimittelereignisse Y1 - 2020 U6 - https://doi.org/10.1016/j.zefq.2020.01.006 SN - 1865-9217 (Print) SN - 2212-0289 (Online) PB - Elsevier ER - TY - CHAP A1 - Orlowski, Katja A1 - Gräfe, Gina A1 - Tetzlaff, Laura A1 - Schrader, Thomas A1 - Beck, Eberhard T1 - Individualized Computer-based Training for Elderly in Nursing Homes: A Pilot Study T2 - Proceedings of the 13th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 5: HEALTHINF, Valletta, Malta KW - Balance Training KW - Computer-based Training KW - Mobility Y1 - 2020 SN - 978-989-758-398-8 U6 - https://doi.org/10.5220/0009162106640669 SP - 664 EP - 669 PB - SciTePress - Science and Technology Publications, Lda. CY - Setúbal, Portugal ER - TY - JOUR A1 - Tetzlaff, Laura A1 - Heinrich, Andrea Sanguino A1 - Schadewitz, Romy A1 - Thomeczek, Christian A1 - Schrader, Thomas T1 - Die Analyse des CIRSmedical.de mittels Natural Language Processing JF - Zeitschrift für Evidenz, Fortbildung und Qualität im Gesundheitswesen T2 - The analysis of CIRSmedical.de using Natural Language Processing KW - CIRS KW - Natural Language Processing KW - Patientensicherheit Y1 - 2022 U6 - https://doi.org/10.1016/j.zefq.2021.12.002 SN - 2212-0289 PB - Elsevier ER - TY - JOUR A1 - Beck, Eberhard A1 - Schrader, Thomas A1 - Tetzlaff, Laura A1 - Löwe, Katharina A1 - Schröder, Cornelia T1 - Eine strukturierte Fallanalyse aus dem Critical Incident Reporting System der Bundesärztekammer und Kassenärztlichen Bundesvereinigung JF - Zeitschrift für Evidenz Fortbildung und Qualität im Gesundheitswesen Y1 - 2018 U6 - https://doi.org/10.1016/j.zefq.2018.02.009 VL - 133 SP - 24 EP - 29 ER - TY - JOUR A1 - Liefold, Marius A1 - Wagner, Dennis A1 - Pokraka, Alexander A1 - Schrader, Thomas T1 - Low-Cost Medical Infrastructure: Triage as intelligent decision support JF - Electronic Imaging, Mobile Devices and Multimedia: Enabling Technologies, Algorithms, and Applications Y1 - 2018 U6 - https://doi.org/10.2352/ISSN.2470-1173.2018.06.MOBMU-116 SP - 116-1 EP - 116-4 PB - Society for Imaging Science and Technology ER - TY - JOUR A1 - Stein, Stefan A1 - Pilgermann, Michael A1 - Weber, Simon A1 - Sedlmayr, Martin T1 - Leveraging MDS2 and SBOM data for LLM-assisted vulnerability analysis of medical devices JF - Computational and Structural Biotechnology Journal N2 - This study investigated the use of a semi-automated, Retrieval-Augmented Generation (RAG)-based multi-agent architecture to analyze security-relevant data and assemble specialized exploitation paths targeting medical devices. The input dataset comprised device-specific sources, namely, the Manufacturer Disclosure Statement for Medical Device Security (MDS2) documents and Software Bills of Materials (SBOMs), enriched with public vulnerability databases, including Common Vulnerabilities and Exposures (CVE), Known Exploited Vulnerabilities (KEV), and Metasploit exploit records. The objective was to assess whether a modular, Large Language Model (LLM)-driven agent system could autonomously correlate device metadata with known vulnerabilities and existing exploit information to support structured threat modeling. The architecture follows a static RAG design based on predefined prompts and fixed retrieval logic, without autonomous agent planning or dynamic query adaptation. The developed Vulnerability Intelligence for Threat Analysis in Medical Security (VITAMedSec) system operates under human-prompted supervision and successfully synthesizes actionable insights and exploitation paths without requiring manual step-by-step input during execution. Although technically coherent results were obtained under controlled conditions, real-world validation remains a critical avenue for future research. This study further discusses the dual-use implications of such an agent-based framework, its relevance to patient safety in medical device cybersecurity, and the broader applicability of the proposed architecture to other critical infrastructure sectors. These findings emphasize both the technical potential and ethical responsibility for applying semi-automated AI workflows in medical cybersecurity contexts. Y1 - 2025 U6 - https://doi.org/10.1016/j.csbj.2025.07.012 VL - 28 SP - 267 EP - 280 ER - TY - JOUR A1 - Kolláth, Zoltán A1 - Hajdu, Tamás A1 - Degen, Tobias A1 - Jechow, Andreas A1 - Sztakovics, János T1 - Conversion between measurement units used for night sky quality assessment with multispectral (RGB) cameras JF - Journal of Quantitative Spectroscopy and Radiative Transfer N2 - In recent years, many studies have shown that light pollution adversely affects wildlife, ecosystems, and human well-being. To assess and mitigate these impacts, it is crucial that measurements of night sky quality are reliable and comparable across sites and instruments. However, the lack of standardised night sky brightness metrology and the use of a wide variety of measurement instruments with varying spectral responsivity and field-specific measurement units hinder meaningful comparison. We collected night sky spectra from 44 nights at dark locations (existing and proposed dark sky parks). Based on this observational dataset, we created a larger random set of spectra. These data served to fit conversion parameters for a wide variety of units. We demonstrate that RGB cameras, when used as multichannel measuring devices, enable the retrieval of measurements that facilitate conversions between different units. Furthermore, even airglow can be quantified from a given measurement, enabling the determination of oxygen and sodium emission line contributions. Since this contribution is not negligible, quantitative measurements of its magnitude are crucial for accurately assessing light pollution at dark-sky sites. Using our spectral measurement database, we constructed the most probable transformation from the cameras’ R, G, and B channel 𝑑𝑠𝑢 values to other units, such as the astronomical Bessel V band magnitudes. The unit conversion formulas provided in this paper are valid for mildly polluted sites (existing and proposed dark sky places), in the 21-22 magV∕arcsec2 range. Y1 - 2025 U6 - https://doi.org/10.1016/j.jqsrt.2025.109636 VL - 347 SP - 1 EP - 10 PB - Elsevier ER - TY - JOUR A1 - Ebad-Allah, Jihaan A1 - Guterding, Daniel A1 - Varma, Meera A1 - Diware, Mangesh A1 - Ganorkar, Shraddha A1 - Jeschke, Harald A1 - Kuntscher, Christine T1 - Near room-temperature ferromagnetism from double exchange in the van der Waals material CrGeTe3: Evidence from optical conductivity under pressure JF - Physical Review B N2 - The unexpected discovery of intrinsic ferromagnetism in layered van der Waals materials has sparked interest in both their fundamental properties and their potential for novel applications. Recent studies suggest near roomtemperature ferromagnetism in the pressurized van der Waals crystal CrGeTe3. We perform a comprehensive experimental and theoretical investigation of magnetism and electronic correlations in CrGeTe3, combining broad-frequency reflectivity measurements with density functional theory and dynamical mean-field theory calculations. Our experimental optical conductivity spectra trace the signatures of developing ferromagnetic order and of the insulator-to-metal transition (IMT) as a function of temperature and hydrostatic pressure. With increasing pressure, we observe the emergence of a midinfrared feature in the optical conductivity, indicating the development of strong orbital-selective correlations in the high-pressure ferromagnetic phase. We find a distinct relationship between the plasma frequency and Curie temperature of CrGeTe3, which strongly suggests that a double-exchange mechanism is responsible for the observed near room-temperature ferromagnetism. Our results clearly demonstrate the existence of a charge-transfer gap in the metallic phase, ruling out its previously conjectured collapse under pressure. Y1 - 2025 U6 - https://doi.org/10.1103/PhysRevB.111.L140402 VL - 111 PB - American Physical Society ER - TY - CHAP A1 - Vielhauer, Claus A1 - Loewe, Fabian A1 - Pilgermann, Michael T1 - Towards Modeling Hidden & Steganographic Malware Communication based on Images T2 - IH&MMSEC '25: ACM Workshop on Information Hiding and Multimedia Security, San Jose, CA, USA, 2025 N2 - Recently, an increasing number of IT security incidents involving malware, which makes use of hidden and steganographic channels for malicious communication (a.k.a. as "stegomalware"), can be observed in the wild. Especially the use of images to hide malicious code is rising. In consideration of this shift, a new model is proposed in this paper, which aims to help security professionals to identify and analyze incidents revolving around steganographic malware in the future. The model focuses on practical aspects of steganalysis of communication data to elaborate linking properties to previous code analysis knowledge. The model features two distinct roles that interact with a knowledge base which stores malware features and helps building a context for the incident. For evaluation, two image steganography malware types are chosen from popular databases (malpedia and MITRE ATT&CK®), which are analyzed in multiple steps including steganalysis and code analysis. It is conceptually shown, how the extracted features can be stored in a knowledge base for later use to identify stegomalware from communication data without the need of a thorough code analysis. This allows to uncover previously hidden meta-information about the examined malicious programs, enrich the incident’s forensic context traces and thus allows for thorough forensic insights, including attribution and improved preventive security measures in the future. Y1 - 2025 UR - https://dl.acm.org/doi/pdf/10.1145/3733102.3733152 U6 - https://doi.org/10.1145/3733102.3733152 SP - 52 EP - 63 ER - TY - JOUR A1 - Neubert, Tom A1 - Schueler, Eric A1 - Ullrich, Henning A1 - Buxhoidt, Laura A1 - Vielhauer, Claus T1 - Extended Analysis, Detection and Attribution of Steganographic Embedding Methods in Network Data of Industrial Controls Systems JF - International Journal on Advances in Security N2 - Since the last decade, it is well known that Industrial Control Systems (ICS) are under attack and attackers nowadays increasingly use stealthy malware (i.e., stegomalware) imple- mented by steganographic embedding methods to in- and exfil- trate hidden information. Unfortunately, current mechanisms to distinguish between network steganographic embedding methods and embedded message types need improvement for a potential attribution of attackers. For the analysis of steganographic em- bedding methods which are utilized in stealthy malware, the work presented in this paper builds upon a state-of-the-art analysis testbed proposed earlier, which is recapitulated here. It offers the opportunity to analyze network steganographic embedding methods in ICS to elaborate methods to detect and distinguish between them to gain forensic information for attribution of potential attackers and their methods. In this work, we introduce a novel machine learning based approach to distinguish between five selected embedding methods and two embedded message types. We use the analysis testbed to evaluate and determine the accuracy of the novel approach compared to a state-of-the-art approach. In our extensive evaluation, our novel approach has shown to be able to distinguish between network steganographic embedding methods with an average accuracy of 85.7%, which is an improvement in comparison to the state-of-the-art by +5.9% and enables a more accurate attribution of attackers. Additionally, the novel approach is able to improve the accuracy of distinction between embedding method and embedded message type by +9.3% in comparison to the evaluated state-of-the-art approach. Y1 - 2025 VL - 18 IS - 1&2 SP - 112 EP - 122 PB - IARIA ER - TY - CHAP A1 - Fitz, Lukas R. G. A1 - Veldyaeva, Ekaterina A1 - Kunze, Adrian A1 - Scheeg, Michaela A1 - Scheeg, Jochen T1 - aiSnoop: An AI-assisted Social Listening Tool for SME Managers T2 - 31st Americas Conference on Information Systems, AMCIS 2025, Montréal, Canada, 2025 N2 - With growing popularity of social networks and online brand engagement, small and medium-sized enterprises (SME) are facing challenges in leveraging business value effectively from interactions with their online communities. Social listening tools, enhanced by artificial intelligence (AI), help enterprises to better understand customer needs and trends by synthesizing engagement and interaction data from various channels into actionable insights. However, prevalent tools widely appear too costly, inaccessible and complex to handle for SME managers. In response, we present this article on the design of "aiSnoop", an AI-assisted social listening tool for SME managers. The article describes how the tool was developed, demonstrated and evaluated as a design artifact with an SME-contextualized design science research approach. We find that automation, usability and transparency, and advanced AI integration are important social listening tool capabilities for SMEs, contributing to the broader discussion on AI-assisted decision-support system design from an SME-and practice-oriented research perspective. Y1 - 2025 UR - https://aisel.aisnet.org/cgi/viewcontent.cgi?article=1231&context=amcis2025 SP - 1 EP - 11 PB - Association for Information Systems ER - TY - JOUR A1 - Schulz, Theresa A1 - Jander, Kai T1 - Dynamic plan generation with LLMs: automatic execution of abstract BDI-agent goals JF - International Journal of Parallel, Emergent and Distributed Systems N2 - Belief-Desire-Intention (BDI) agents enable complex behavior in multi-agent systems by defining goals and implementing plans to achieve their goals. Typically, developers pre-define plans, which limits adaptability. This paper presents an approach for BDI agents to dynamically generate plans using large language models (LLMs), exploiting contextual information such as goals, beliefs, and structural data. We evaluate the feasibility, reliability, and limitations of this method, and discuss its implications for the automation of BDI-based agents. Our results suggest that LLMs can enhance agent autonomy by reducing the need for manual plan definition, while maintaining goal-oriented reasoning. Y1 - 2025 U6 - https://doi.org/10.1080/17445760.2025.2541956 SP - 1 EP - 21 PB - Taylor&Francis ER - TY - JOUR A1 - Vinken, Mathieu A1 - Grimm, Daniela A1 - Baatout, Sarah A1 - Baselet, Bjorn A1 - Beheshti, Afshin A1 - Braun, Markus A1 - Carstens, Anna Catharina A1 - Casaletto, James A. A1 - Cools, Ben A1 - Costes, Sylvain V. A1 - De Meulemeester, Phoebe A1 - Doruk, Bartu A1 - Eyal, Sara A1 - Ferreira, Miguel J. S. A1 - Miranda, Silvana A1 - Hahn, Christiane A1 - Akyuz, Sinem Helvacioglu A1 - Herbert, Stefan A1 - Krepkiy, Dmitriy A1 - Lichterfeld, Yannik A1 - Liemersdorf, Christian A1 - Marcus, Krüger A1 - Marchal, Shannon A1 - Ritz, Jette A1 - Schmakeit, Theresa A1 - Stenuit, Hilde A1 - Tabury, Kevin A1 - Trittel, Torsten A1 - Wehland, Markus A1 - Zhang, Yu Shrike A1 - Putt, Karson S. A1 - Zhang, Zhong-Yin A1 - Tagle, Danilo A. T1 - Taking the 3Rs to a higher level: replacement and reduction of animal testing in life sciences in space research JF - Biotechnology advances N2 - Human settlements on the Moon, crewed missions to Mars and space tourism will become a reality in the next few decades. Human presence in space, especially for extended periods of time, will therefore steeply increase. However, despite more than 60 years of spaceflight, the mechanisms underlying the effects of the space environment on human physiology are still not fully understood. Animals, ranging in complexity from flies to monkeys, have played a pioneering role in understanding the (patho)physiological outcome of critical environmental factors in space, in particular altered gravity and cosmic radiation. The use of animals in biomedical research is increasingly being criticized because of ethical reasons and limited human relevance. Driven by the 3Rs concept, calling for replacement, reduction and refinement of animal experimentation, major efforts have been focused in the past decades on the development of alternative methods that fully bypass animal testing or so-called new approach methodologies. These new approach methodologies range from simple monolayer cultures of individual primary or stem cells all up to bioprinted 3D organoids and microfluidic chips that recapitulate the complex cellular architecture of organs. Other approaches applied in life sciences in space research contribute to the reduction of animal experimentation. These include methods to mimic space conditions on Earth, such as microgravity and radiation simulators, as well as tools to support the processing, analysis or application of testing results obtained in life sciences in space research, including systems biology, live-cell, high-content and real-time analysis, high-throughput analysis, artificial intelligence and digital twins. The present paper provides an in-depth overview of such methods to replace or reduce animal testing in life sciences in space research. Y1 - 2025 U6 - https://doi.org/10.1016/j.biotechadv.2025.108574 VL - 81 IS - 7/8 PB - Elsevier ER - TY - JOUR A1 - Schumann, Sophia A1 - Stoilova, Velizara A1 - Bortoletto, Enrico A1 - Piva, Elisabetta A1 - Pacchini, Sara A1 - Mozzi, Gloria A1 - Jechow, Andreas A1 - Marion, Andrea A1 - Bertotto, Daniela A1 - Erlandson, Ann A1 - Hölker, Franz A1 - Greenberg, Larry A1 - Santovito, Gianfranco T1 - Impact of artificial light at night (ALAN) on cardiac function and acute oxidative stress physiology in migratory brown trout smolts JF - Environmental Pollution N2 - Light pollution poses significant ecological challenges for nocturnal animals reliant on natural light for migration, orientation, and circadian rhythms. The physiological effects of abrupt exposure to artificial light at night (ALAN) on migratory fish, such as the light experienced passing near illuminated infrastructures, remain poorly understood. This study investigates the physiological responses of brown trout (Salmo trutta) smolts to low-intensity (0.02 lx) and short-term (30 s) ALAN, simulating nocturnal migration light conditions near illuminated bridges. To evaluate the influence of social dynamics, trout were tested individually (solitary) or in groups of six. Using continuous cardiac monitoring with data storage tags, alongside analyses of oxidative stress markers and adenylate kinase (AK) activity in the heart, we identified distinct patterns of physiological responses. Solitary fish exhibited significant heart rate variability (HRV) increases following repeated ALAN exposure, suggesting impaired physiological regulation under repeated ALAN exposure. In contrast, trout in groups displayed consistently lower HRV over the entire 90-min experiment, implying that social dynamics likely influenced a sustained oxidative stress response, corroborated by increased AK activity. Oxidative stress markers further reflected social effects, with significant upregulation of key antioxidant enzymes (sod1, sod2, gpx1, gpx4) and elevated lipid peroxidation, identifying lipids as primary oxidative targets. The observed divergence between superoxide dismutase (SOD) activity and sod gene expression suggests adaptive post-transcriptional regulation to maintain redox balance under combined environmental and social stress. These findings reveal that social dynamics under ALAN can amplify physiological stress, potentially affecting migratory outcomes. Y1 - 2025 U6 - https://doi.org/10.1016/j.envpol.2025.126593 IS - 381 SP - 1 EP - 9 PB - Elsevier ER - TY - JOUR A1 - Fitz, Lukas R. G. A1 - Scheeg, Jochen T1 - Alternative digital platforms: comparative analysis through the lens of Corporate Aikido JF - Information Systems and e-Business Management N2 - Competing with dominant players in the digital platform (DP) economy is an increasingly complex and expensive endeavor for alternative digital platform (ADP) providers trying to disrupt established platform ecosystems. Nevertheless, ADPs position themselves deliberately in the competitive space of large competitors, targeting customer groups whose values and mindsets differ from mainstream DPs. Although there are many examples to find in practice, the variety of ADPs across different DP ecosystems and industries, especially in regards of strategic objectives, directions and characteristics, has not been researched in-depth yet. Based on a systematic, practice-based artifact review, this paper analyses and compares 105 ADPs in the competitive space of dominant DP ecosystem players. The study utilizes the theory of Corporate Aikido as an analytical framework, mapping the strategic elements of overthrowing established value propositions and turning a competitors’ strengths into weaknesses. Our findings indicate that privacy- and security-awareness, empowerment and inclusivity, premium quality and curation, open source and free access, uncensored, transparent and decentralized platforms as well as ecological and climate-friendly offers shape the landscape of alternative approaches in today’s DP economy. The results are subsequently discussed, yielding managerial implications and future opportunities for DP research. Y1 - 2025 U6 - https://doi.org/10.1007/s10257-025-00703-8 SP - 1 EP - 22 PB - Springer ER - TY - CHAP A1 - Teutenberg, Lukas A1 - Fitz, Lukas R. G. A1 - Scheeg, Jochen T1 - Current Design Practices in Applied Augmented Reality Research: A Methodological Review T2 - Computer-Human Interaction Research and Applications. CHIRA, 2024 N2 - Successful Augmented Reality (AR) solutions require high technology acceptance and desire among users. Applying appropriate design methodologies can enhance the development of desirable AR systems and help to streamline design research projects. This article presents a methodological literature review of 58 pertinent articles, exploring the representation of methodological design frameworks in currently applied AR research practice. In result, User-Centered Design was identified most frequently by a large margin. Though, it could be observed that most articles from the field of applied AR only marginally describe any design processes. Moreover, Human-Centered Design, Participatory Design and Value Sensitive Design were only scantily represented; less than half of the papers followed a Design Science Research or Action Design Research approach. Several implications for applied research and practice are derived from these findings and discussed together with future research opportunities. Overall, this study contributes to the refinement of methodological design practice in the field of applied AR research. Y1 - 2025 UR - https://www.insticc.org/node/TechnicalProgram/chira/2024/presentationDetails/129048 U6 - https://doi.org/10.1007/978-3-031-82633-7_9 SP - 131 EP - 146 PB - Springer ER - TY - JOUR A1 - Prinz, Alexander A1 - Orlowski, Katja A1 - Beck, Eberhard A1 - Witte, Kerstin T1 - Serious Games for Seniors With Dementia: A Pilot Study JF - Journal of Applied Gerontology N2 - Dementia, marked by cognitive decline, significantly impacts daily life. With global prevalence rising, traditional treatments manage symptoms but have side effects and offer no cure. Non-pharmacological interventions, like serious games, are gaining importance. This study assesses the feasibility and benefits of serious games for people with mild to moderate dementia over a 10-week intervention. Sixty-one patients were recruited, with 35 completing the study. The intervention included six games focusing on physical and cognitive training. Outcome measures were motor function, cognitive assessments, quality of life, and depression. Results showed significant improvements in dynamic balance (p = .013) but no significant changes in other measures. The findings suggest that serious games are feasible and can improve motor functions like balance. However, short intervention periods may limit their impact on cognitive function and quality of life. Longer interventions and personalized game designs are recommended for greater benefits. Y1 - 2025 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-33440 VL - 2025 SP - 1 EP - 11 ER - TY - JOUR A1 - Frosch, Katharina A1 - Lindauer, Friederike T1 - Learning With Short Bursts: How Effectively Can We Build Competencies in Climate Change-Related Areas Based on Microlearning? JF - European Journal of Education N2 - The study examines the effectiveness of microlearning in developing the capacity to address climate change and adapt to environmental challenges. Conducted as an online field experiment with 140 participants, the study focused on the impacts of smartphone use as an illustrative learning domain for education in climate change-related areas. Using a pre–post research design and simultaneous equation models, the study found improvements in knowledge retention, with a median increase of 38%. The results indicated that the brief microlearning units also promoted sustainability action competencies, such as confidence in one's influence and willingness to act sustainably. This suggests that higher-order learning processes were also triggered, although to a much lesser extent. Furthermore, learner satisfaction was identified as a mediating variable for these positive outcomes. The study concludes that short bursts of knowledge delivered through microlearning activities can be used alongside traditional training methods to build the critical skills needed for initiatives such as the EU Green Deal. Y1 - 2025 U6 - https://doi.org/10.1111/ejed.70088 VL - 60 IS - 2 SP - 1 EP - 17 PB - Wiley ER - TY - JOUR A1 - Kalinkat, Gregor A1 - Jechow, Andreas A1 - Schroer, Sibylle A1 - Hölker, Franz T1 - Nocturnal pandas: conservation umbrellas protecting nocturnal biodiversity JF - Trends in Ecology & Evolution N2 - Light pollution is an emerging ecological threat. To mitigate its negative consequences, creative inter- and transdisciplinary solutions and societal interactions are needed. To this end, we introduce nocturnal umbrella species representative of light-sensitive biodiversity whose protection will safeguard vital ecosystem services and a wide range of co-occurring species. Y1 - 2025 U6 - https://doi.org/10.1016/j.tree.2025.05.006 VL - 40 IS - 8 SP - 736 EP - 739 PB - Elsevier ER - TY - JOUR A1 - Dietenberger, Manuel A1 - Jechow, Andreas A1 - Sann, Manuela A1 - Hölker, Franz T1 - Shedding light on dark taxa: exploring a cryptic diversity of parasitoid wasps affected by artificial light at night JF - Scientific Reports N2 - Artificial light at night (ALAN) contributes to the globally observed insect decline. ALAN attracts nocturnal insects from their native ecosystems and disturbs their functions in the food web. Road lights in this context are ubiquitous and relevant ALAN sources that are often not considered in conservation approaches. In a previous study we showed that shielded LED road lights are suited to be part of conservation measures by effectively reducing the attraction of nocturnal insects. Here we show that this positive effect holds true for parasitoid wasps in an experimental BACI design (Before-After-Control-Impact). Combining morphological with molecular and phylogenetic analyses, we identified 106 individuals (62 morphotypes) of a minimum of 45 genera out of 13 Hymenoptera families. We were able to identify 21 species, 11 of which are newly reported in Southern Germany (Baden-Württemberg). Further combining knowledge on life history and host appearance from our data and the literature, we discuss potential impacts of ALAN ranging from an influence on nocturnal pollination via parasitoid pressure on moth species and biological control of invasive pest species to tritrophic interactions between primary and secondary parasitoids. We conclusively think that shielded LED road lights will reduce the ecological impact of ALAN on parasitoid wasps in a large and undescribed number of taxa with different host associations, likely affecting associated ecosystem functions such as biological control. Y1 - 2025 U6 - https://doi.org/10.1038/s41598-025-88111-3 VL - 15 SP - 1 EP - 12 ER - TY - JOUR A1 - Fitz, Lukas R. G. A1 - Scheeg, Jochen T1 - Coping Practices of Small- and Medium-Sized Enterprises Facing Power Asymmetry in Digital Platform Business JF - Strategic Change N2 - Digital platform (DP) enterprises have risen to the top of the global economy by inverting traditional business models. They earn money through matchmaking, transaction facilitation, and efficient orchestration of other stakeholders' resources. Small- and medium-sized enterprises (SMEs) play a decisive role in this success story: they offer products and services on many leading DPs and thereby feed platform networks as sellers and suppliers. On the other hand, while DPs enable SMEs to reach new customers and outsource costly managerial tasks, many SMEs struggle with the negative consequences of asymmetric power dynamics and dependency risks in platform business. This paper analyzes 14 cases of SMEs that face power asymmetry as DP value providers, unraveling challenges encountered and coping practices employed in this situation. The findings reveal that power asymmetry between dominant DPs and SMEs creates significant challenges, including exploitative relationships, loss of autonomy, surveillance pressures, and devaluation of SME contributions, while SMEs cope through disintermediation, multi-homing, individual resistance tactics, and striving for more equitable DP models. Moreover, three relationality types are identified: DPs being SMEs' “partners,” “tools,” and “necessary evil.” This article offers a new perspective on boundaries of SME strategies in the DP economy and contributes with empirical insights to the advancing field of entrepreneurial platform research. Y1 - 2025 U6 - https://doi.org/10.1002/jsc.2657 SP - 1 EP - 21 PB - Wiley ER - TY - CHAP A1 - Veldyaeva, Ekaterina A1 - Fitz, Lukas R. G. A1 - Scheeg, Michaela A1 - Scheeg, Jochen T1 - Unlocking AI for SMEs: How an Educational Escape Room Shapes Perceptions towards Technology Adoption Decision-Making T2 - Proceedings of the 58th Hawaii International Conference on System Sciences, Waikoloa, HI, USA, 2025 N2 - Facing modern challenges of digital transformation, small and medium-sized enterprises (SMEs) need to ensure informed and strategic decision-making before adopting new digital technology. This study builds upon Action Design Research (ADR) on educational escape room design targeting SME practitioners in technology adoption decision-making. We hypothesize that the game experience influences SMEs’ artificial intelligence (AI) adoption decisions regarding technology-, organization- and environment-related perceptions and evaluate the survey data of 70 participants, who are SME owners or members. According to the results, the game-based approach was well-received. Engagement in the game positively influenced participants' affective state and improved self-reflection. The experience influenced participants' perceptions of AI's transformative potential. In order to facilitate easier transfer to different personal business contexts, future design iterations will include more process-neutral AI applications. The study contributes to research on game-based knowledge transfer in organizational contexts, providing insightful results and encouraging further exploration in this emerging field. Y1 - 2025 UR - https://hdl.handle.net/10125/109437 SP - 4905 EP - 4914 ER - TY - JOUR A1 - Scharf, Gili A1 - Guterding, Daniel A1 - Hen, Bar A1 - Sarte, Paul M. A1 - Ortiz, Brenden R. A1 - Rozenberg, Gregory Kh. A1 - Holder, Tobias A1 - Wilson, Stephen D. A1 - Jeschke, Harald O. A1 - Ron, Alon T1 - Pressure tuning of intrinsic and extrinsic sources to the anomalous Hall effect in CrGeTe3 JF - Physical Review Research N2 - The integrated Berry curvature is a geometric property that has dramatic implications for material properties. This study investigates the integrated Berry curvature and other contributions to the anomalous Hall effect in CrGeTe3 as a function of pressure. The anomalous Hall effect is absent in the insulating phase of CrGeTe3 and evolves with pressure in a domelike fashion as pressure is applied. The dome's edges are characterized by Fermi surface deformations, manifested as mixed electron and hole transport. We corroborate the presence of bipolar transport using ab initio calculations, which also predict a nonmonotonic behavior of the Berry curvature as a function of pressure. Quantitative discrepancies between our calculations and experimental results indicate that additional scattering mechanisms, which are also strongly tuned by pressure, contribute to the anomalous Hall effect in CrGeTe3. Y1 - 2025 U6 - https://doi.org/10.1103/PhysRevResearch.7.013127 VL - 7 IS - 1 SP - 1 EP - 8 PB - APS ER - TY - CHAP A1 - Pepe, Alberto A1 - Lasenby, Joan A1 - Buchholz, Sven T1 - CGAPoseNet+GCAN: A Geometric Clifford Algebra Network for Geometry-aware Camera Pose Regression T2 - Winter Conference on Applications of Computer Vision, Waikoloa, Hawaii, US, 2024 N2 - We introduce CGAPoseNet+ GCAN, which enhances CGAPoseNet, an architecture for camera pose regression, with a Geometric Clifford Algebra Network (GCAN). With the addition of the GCAN we obtain a geometry-aware pipeline for camera pose regression from RGB images only. CGAPoseNet employs Clifford Geometric Algebra to unify quaternions and translation vectors into a single mathematical object, the motor, which can be used to uniquely describe camera poses. CGAPoseNet solves the issue of balancing rotation and translation components in the loss function, and can obtain comparable results to other approaches without the need of expensive tuning of the loss function or additional information about the scene, such as 3D point clouds, which might not always be available. CGAPoseNet, however, like several approaches in the literature, only learns to predict motor coefficients, and it is unaware of the mathematical space in which predictions sit in and of their geometrical meaning. By leveraging recent advances in Geometric Deep Learning, we modify CGAPoseNet with a GCAN: proposals of possible motor coefficients associated with a camera frame are obtained from the InceptionV3 backbone, and the GCAN downsamples them to a single motor through a sequence of layers that work in G_ 4, 0. The network is hence geometry-aware, has multivector-valued inputs, weights and biases and preserves the grade of the objects that it receives in input. CGAPoseNet+ GCAN has almost 4 million fewer trainable parameters, it reduces the average rotation error by 41% and the average translation error by 8.8% compared to CGAPoseNet. Similarly, it reduces rotation and translation errors by 32.6% and 19.9%, respectively, compared to the best performing PoseNet strategy. CGAPoseNet+ GCAN reaches the state-of-the-art results on 13 commonly employed datasets. To the best of our knowledge, it is the first experiment in GCANs applied to the problem of camera pose regression. Y1 - 2024 U6 - https://doi.org/10.1109/WACV57701.2024.00646 SP - 6593 EP - 6603 PB - IEEE ER - TY - CHAP A1 - Wang, Tingting A1 - Nitze, André A1 - Hofstedt, Petra A1 - Löffler, Sven A1 - Hennig, Silvia A1 - Klinge, Alexander T1 - Technische Machbarkeit von ländlichem On-Demand-Verkehr: Anforderungen an eine Open-Source-Software-Architektur T2 - 24. Nachwuchswissenschaftler:innenkonferenz N2 - On-Demand-Verkehr bezeichnet Mobilitätsangebote, die auf Bestellung verfügbar sind. Ziel ist es, durch flexible Mobilitätsangebote Lücken im ländlichen öffentlichen Personennahverkehr (ÖPNV) zu schließen, insbesondere in dünn besiedelten Räumen und zu Randzeiten des Tages. Die Einführung solcher Dienste gestaltet sich für viele Kommunen jedoch aufgrund der hohen Lizenzgebühren für proprietäre Software als äußerst schwierig, insbesondere in strukturschwachen Regionen, die solche Dienste besonders benötigen. Im Rahmen des Projekts "Open-Source-Software für ländlichen On-Demand-Verkehr" (OSLO) wurde die Umsetzbarkeit einer niedrigschwelligen Open-Source-Lösung geprüft. Diese Lösung soll langfristig in die Open-Source-Mobilitätsplattform bbnavi integriert werden, um die Nutzung vorhandener Mobilitätsdaten zu erleichtern, Interoperabilität zu gewährleisten und die Anpassung an andere Regionen zu vereinfachen. Das Konzept beinhaltet eine Software-Architektur, einen speziell für den ländlichen Nahverkehr entwickelten intermodalen Routing-Algorithmus und ein Betriebs- und Organisationsmodell ([1]). In diesem Beitrag wird beschrieben, wie eine effiziente Software-Architektur für das OSLO-Projekt entworfen wurde. Die zentralen Themen beinhalten die Strukturierung der Komponenten, die Anwendung von GTFS-Flex-V2, die Integration des angepassten Routing-Algorithmus sowie die Einbindung externer Schnittstellen. KW - On-Demand-Verkehr KW - Software-Architektur KW - Open Source Y1 - 2024 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bsz:mit1-opus4-154308 SN - 1437-7624 IS - 3 SP - 361 EP - 366 PB - Hochschule Mittweida CY - Mittweida ER - TY - INPR A1 - Pepe, Alberto A1 - Lasenby, Joan A1 - Buchholz, Sven T1 - STAResNet: A Network in Spacetime Algebra to solve Maxwell's PDEs T2 - arXiv N2 - We introduce STAResNet, a ResNet architecture in Spacetime Algebra (STA) to solve Maxwell's partial differential equations (PDEs). Recently, networks in Geometric Algebra (GA) have been demonstrated to be an asset for truly geometric machine learning. In [1], GA networks have been employed for the first time to solve partial differential equations (PDEs), demonstrating an increased accuracy over real-valued networks. In this work we solve Maxwell's PDEs both in GA and STA employing the same ResNet architecture and dataset, to discuss the impact that the choice of the right algebra has on the accuracy of GA networks. Our study on STAResNet shows how the correct geometric embedding in Clifford Networks gives a mean square error (MSE), between ground truth and estimated fields, up to 2.6 times lower than than obtained with a standard Clifford ResNet with 6 times fewer trainable parameters. STAREsNet demonstrates consistently lower MSE and higher correlation regardless of scenario. The scenarios tested are: sampling period of the dataset; presence of obstacles with either seen or unseen configurations; the number of channels in the ResNet architecture; the number of rollout steps; whether the field is in 2D or 3D space. This demonstrates how choosing the right algebra in Clifford networks is a crucial factor for more compact, accurate, descriptive and better generalising pipelines. Y1 - 2024 UR - https://arxiv.org/pdf/2408.13619 SP - 1 EP - 17 PB - arXiv ER - TY - CHAP A1 - Levina, Olga T1 - Incorporating Ethical Aspects in Information Systems Requirements Engineering T2 - Perspectives in Business Informatics Research, 23rd International Conference on Business Informatics Research, BIR 2024, Prag, Tschechien, September 11–13, 2024 N2 - Ethical considerations in software requirements engineering are a critical but often overlooked aspect of the software development process. However, requests for transparency and autonomy in the way IT artefacts are designed, described, used, applied and integrated in the everyday life are getting more pressing within the society. In this research, the process of software engineering is taken as an illustrative model for the proactive incorporation of ethical principles in the system design within the design of a software artefact. Specifically, the phase of requirements elicitation and analysis are expanded with ethical aspects, since that is where the first steps of the software construction as an artefact are initiated and the first common ground of understanding is achieved. Being rooted in the security engineering, the SQUARE process is expanded to provide a basic structure for incorporating of ethical aspects into software design. By doing so, the social and moral values become central to the design and development of new technologies. Y1 - 2024 UR - https://link.springer.com/content/pdf/10.1007/978-3-031-71333-0.pdf U6 - https://doi.org/10.1007/978-3-031-71333-0_10 SP - 153 EP - 161 PB - Springer ER - TY - CHAP A1 - Kitzelmann, Emanuel T1 - Lernen mit Neuronalen Netzen T2 - Furbach, U., Kitzelmann, E., Michaeli, T., Schmid, U. (Hrsg.) Künstliche Intelligenz für Lehrkräfte. N2 - Sitz der menschlichen Intelligenz ist das Gehirn. Was läge also näher, als Erkenntnisse aus der Hirnforschung für die Erzeugung künstlicher Intelligenz zu nutzen? Künstliche neuronale Netze simulieren in einer vereinfachten und abgewandelten Form den grundlegenden Aufbau des Gehirns und sind als eine leistungsfähige Variante des maschinellen Lernens vielseitig einsetzbar, um komplexe Funktionen, z. B. in der Bild- und Sprachverarbeitung, aus großen Mengen von Daten zu lernen. Viele aktuelle und Aufsehen erregende Anwendungen der künstlichen Intelligenz – leistungsfähige ChatBots und Bildgeneratoren, Bilderkennung in Fahrassistenzsystemen, die Erkennung von Krankheitsbildern in der bildgebenden Diagnostik, Prognosen im Finanzwesen und viele mehr – beruhen auf künstlichen neuronalen Netzen. Dieses Kapitel behandelt den Grundaufbau eines einzelnen künstlichen Neurons und eines mehrschichtigen neuronalen Netzes. Es wird erklärt, wie ein neuronales Netz Eingaben verarbeitet und wie es mit Daten trainiert werden kann, um eine bestimmte Funktion auszuführen. Y1 - 2024 U6 - https://doi.org/10.1007/978-3-658-44248-4_5 SP - 53 EP - 67 PB - Springer ER - TY - CHAP A1 - Kersten, Philipp A1 - Buzin, Johannes A1 - Hirsch, Sören T1 - Wireless Sensor Nodes for Condition Based Maintenance in Railway Systems T2 - IEEE Sensors Conference, Kobe, Japan, 2024 N2 - Ensuring the reliability, safety, and efficiency of railway systems is increasingly critical in global transportation networks. This paper addresses the necessity for advanced monitoring systems by introducing a multivariate energy-efficient wireless sensor node designed for proactive maintenance in rail applications. Y1 - 2024 UR - https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10784508 U6 - https://doi.org/10.1109/SENSORS60989.2024.10784508 SP - 1 EP - 4 PB - IEEE ER - TY - CHAP A1 - Michaeli, Tilman A1 - Kitzelmann, Emanuel A1 - Seegerer, Stefan A1 - Romeike, Ralf T1 - Lernen aus Daten T2 - Furbach, U., Kitzelmann, E., Michaeli, T., Schmid, U. (Hrsg.) Künstliche Intelligenz für Lehrkräfte N2 - In diesem Kapitel werden Grundlagen des maschinellen Lernens erläutert und von wissensbasierten Ansätzen Künstlicher Intelligenz abgegrenzt. Dazu werden verschiedene Ansätze des maschinellen Lernens unterschieden und an Beispielen ausgeführt. Aufbauend hierauf werden gesellschaftliche Bezüge und Implikationen beleuchtet. Y1 - 2024 U6 - https://doi.org/10.1007/978-3-658-44248-4_3 SP - 25 EP - 38 PB - Springer CY - Wiesbaden ER - TY - JOUR A1 - Vollmer, Michael A1 - Eberhardt, Wolfgang T1 - Ein einfaches Modell für die Vorhersage von CO2 Konzentrationen in der Atmosphäre in Abhängigkeit von globalen CO2 Emissionen JF - PhyDid B, Didaktik der Physik, Beiträge zur DPG-Frühjahrstagung N2 - Es wird das vielleicht einfachst mögliche Modell vorgestellt, mit dem zeitabhängige CO2 Konzent-rationen c(t) in der Atmosphäre ausgehend von verschiedenen globalen Emissionsszenarien für CO2berechnet werden. Dazu wird eine einzelne inhomogene lineare Differenzialgleichung 1. Ordnung hergeleitet, deren Parameter sich aus den quantitativen Daten des global carbon project sowie Mauna Loa Daten für CO2 Konzentrationen errechnen. Das Modell wird erstens getestet am Zeitraum 1960 bis 2020 mit vergleichsweise guter quantitativer Übereinstimmung zu Messdaten. Zweitens wird für zwei typische IPCC Emissions-Szenarien ein Vergleich der Modellvorhersagen mit denen der kom-plexen IPCC Earth-System-Klimamodelle diskutiert mit qualitativer Übereinstimmung des zeitli-chen Verlaufs. Drittens werden Ergebnisse einiger ausgewählter neuer Emissionsszenarien präsen-tiert. Ungeachtet einiger Abweichungen zu komplexeren Klimamodellen zeichnet sich unser Mo-dell durch zwei wichtige Vorteile für die Lehre aus. Zum einen ist es sehr einfach für Studierende und begabte Schüler nutzbar, da die erforderliche Lösung der Differentialgleichung bereits mit han-delsüblicher Tabellenkalkulationssoftware wie z.B. Excel programmiert werden kann. Dadurch ge-stattet es zum anderen auch sehr einfach, den zeitlichen Verlauf von Emissionsszenarien zu verän-dern und innerhalb weniger Sekunden Veränderungen aufgrund geänderter Eingaben zu berechnen. Insofern eignet sich das Modell sehr gut als Einstieg in das Thema Klimamodellierung in einführen-den Hochschulvorlesungen zum Themenbereich Kohlenstoffkreislauf und Klimawandel. In der Schule kann es gegen Ende der Sekundarstufe 2 beispielsweise im Projektunterricht zum Themen-komplex Nachhaltigkeit in Physik und/oder Mathematik eingesetzt werden Y1 - 2024 UR - https://ojs.dpg-physik.de/index.php/phydid-b/article/view/1411 SN - 2191-379X VL - 1 IS - 1 SP - 379 EP - 388 PB - FU Berlin ER - TY - RPRT A1 - Schiller, Carina T1 - IN-FDM-BB Werkstattbericht: W 1.2.3 Gemeinsamer Lessons-Learned-Bericht zu Beratung N2 - Die Beratung von Forschenden spielt eine zentrale Rolle bei der Umsetzung und Etablierung des Forschungsdatenmanagements (FDM) im Forschungsalltag. Nach wie vor benötigen viele Forschende Unterstützung im Umgang mit ihren Forschungsdaten. Dies kann einerseits durch einen eher generischen Kenntnisstand zum Thema FDM bedingt sein, andererseits stellt der FDM-Kosmos einen hochfluiden Bereich dar – mit fortlaufend aktualisierten oder gänzlich neuen Tools und Infrastrukturen sowie veränderten Anforderungen an Forschende auch von Seiten der Forschungsförderer. Eine zentrale FDM-Anlaufstelle für die Ratsuchenden ist an den Hochschulen unerlässlich und folglich auch unter den Maßnahmen des Verbundprojekts „IN-FDM-BB – Institutionalisiertes und nachhaltiges Forschungsdatenmanagement in Brandenburg“ zu finden. Seit Oktober 2022 (Projektbeginn) werden an den beteiligten brandenburgischen Hochschulen entsprechende FDM-Kontaktpunkte auf- bzw. ausgebaut um die (Erst-)Beratung von Forschenden durchführen zu können. Darüber hinaus werden unterstützende Angebote etwa für rechtliche/ethische Fragen konzipiert und etabliert, um eine umfassende Beratung auch für spezifische Aspekte des FDMs zu ermöglichen. Bedarfsgerechte Materialien und Handreichungen, ebenso Bestandteil des Projektplans, ergänzen das individuelle Beratungsangebot. Der vorliegende Werkstattbericht stellt Erkenntnisse und Herausforderungen der Erprobungsphase dar und skizziert Ansätze, um diesen Herausforderungen lösungsorientiert begegnen zu können. Wertvolle Einblicke in die Beratungspraxis aller am Projekt beteiligter Hochschulen bilden dabei die Grundlage. Y1 - 2024 U6 - https://doi.org/10.5281/zenodo.13349762 PB - Zenodo ER - TY - CHAP A1 - Pepe, Alberto A1 - Lasenby, Joan A1 - Buchholz, Sven T1 - GA-ReLU: an activation function for Geometric Algebra Networks applied to 2D Navier-Stokes PDEs T2 - ICLR 2024 Workshop on AI4DifferentialEquations In Science, Wien, Österreich N2 - Many differential equations describing physical phenomena are intrinsically geometric in nature. It has been demonstrated how this geometric structure of data can be captured effectively through networks sitting in Geometric Algebra (GA) that work with multivectors, making them suitable candidates to solve differential equations. GA networks however, are still mostly uncharted territory. In this paper we focus on non-linearities, since applying them to multivectors is not a trivial task: they are generally applied in a point-wise fashion over each real-valued component of a multivector. This approach discards interactions between different elements of the multivector input and compromises the geometric nature of GA networks. To bridge this gap, we propose GA-ReLU, a GA approach to the rectified linear unit (ReLU), and show how it can improve the solution of Navier-Stokes PDEs. Y1 - 2024 UR - https://openreview.net/pdf?id=T54Hn1e98P SP - 1 EP - 6 ER - TY - JOUR A1 - Vollmer, Michael A1 - Eberhardt, Wolfgang T1 - A simple model for the prediction of CO2 concentrations in the atmosphere, depending on global CO2 emissions JF - European Journal of Physics N2 - We present a very simple model for estimating time dependent atmospheric CO2 concentrations c(t) from global carbon emission scenarios, serving as single input data. We derive a single linear differential equation of 1st order, based on parameters which are estimated from quantitative data of the global carbon project and Mauna Loa data for CO2 concentrations. The model is tested first by comparing it to the 1960–2021 period with reasonably good quantitative agreement and, second to two of the typical current IPCC scenarios with good qualitative agreement. Finally, some new emission scenarios are modelled. Despite several drawbacks concerning absolute quantitative predictions, there are two important advantages of the model. First, it can be easily executed by students already with simple programmable spreadsheet programs such as Excel. Second input emission scenarios can be changed easily and expected changes are immediately seen for discussion during undergraduate and graduate courses on the carbon cycle and climate change. Y1 - 2024 U6 - https://doi.org/10.1088/1361-6404/ad230d VL - 45 IS - 2 ER - TY - JOUR A1 - Klopp, Christoph A1 - Trittel, Torsten A1 - Stannarius, Ralf T1 - Coarsening of quasi two-dimensional emulsions formed by islands in free-standing smectic films JF - ChemPhysChem N2 - We study the coarsening behavior of assemblies of islands on smectic A freely suspended films in ISS microgravity experiments. The islands can be regarded as liquid inclusions in a two-dimensional fluid in analogy to liquid droplets of the discontinuous phase of an emulsion. The coarsening is effectuated by two processes, predominantly by island coalescence, but to some extend also by Ostwald ripening, whereby large islands grow at the expense of surrounding smaller ones. A peculiarity of this system is that the continuous and the discontinuous phases consist of the same material. We determine the dynamics, analyze the self-similar aging of the island size distribution and discuss characteristic exponents of the mean island growth. Y1 - 2024 U6 - https://doi.org/10.1002/cphc.202400166 VL - 25 IS - 12 SP - 1 EP - 12 PB - Wiley ER - TY - JOUR A1 - Klopp, Christoph A1 - Stannarius, Ralf T1 - Rupture of thin nematic walls between isotropic droplets of the same mesogenic material JF - Liquid Crystals N2 - We prepared isotropic droplets surrounded by nematic fringes in smectic A freely suspended films. During their coalescence, a thin nematic film is formed that acts as a barrier and separates the isotropic cores of these droplets. This film ruptures in the course of the droplet merging process. The observation of the film dynamics provides an exceptional opportunity to study the rupture of a thin liquid barrier embedded in a surrounding viscous liquid. A detailed dynamic characterisation of the nematic walls is performed. Qualitatively similar observations have been reported in 3D for oil drops coalescing in water and vice versa, where the rupture of an intermediate thin fluid film retards the merging process. The peculiarity of the system reported here is that the material of the droplets and the membrane is identical. Y1 - 2024 U6 - https://doi.org/10.1080/02678292.2024.2325619 VL - 51 IS - 5 SP - 783 EP - 797 PB - Taylor & Francis ER - TY - JOUR A1 - Vollmer, Michael T1 - Limitations of the eye and how to overcome them JF - Journal of Physics: Conference Series N2 - Human eyes have spatial, temporal, and spectral limitations which impose constraints on our perception. With appropriate optical devices and cameras, the limitations can be easily overcome. As a consequence, a huge variety of physical phenomena can be made accessible for teaching. Y1 - 2024 U6 - https://doi.org/10.1088/1742-6596/2750/1/012001 VL - 2750 IS - 1 SP - 1 EP - 10 ER - TY - JOUR A1 - Arslan, Eda A1 - Brücher, Viktoria A1 - Demir, Gokce A1 - Liekfeld, Anja T1 - Gender distribution of scientific contributions at German ophthalmological conferences - a baseline study T1 - Geschlechterverteilung bei wissenschaftlichen Beiträgen auf deutschen ophthalmologischen Kongressen – eine Bestandsaufnahme JF - Die Ophthalmologie N2 - The proportion of female ophthalmologists in Germany has risen to approximately 50% in recent years, and approximately 66% of medical students are women. This represents a reversal of the past situation with a male predominance. Despite this change, many international studies show that women are still underrepresented at scientific conferences, particularly among invited speakers, chairpersons, and program committees. This study aims to investigate whether these differences in gender representation are also reflected at German ophthalmological congresses and whether the situation has changed in recent years. MethodsData collection covered the years 2013, 2022, and 2023 and included the congresses of the five large German ophthalmological associations: the German Ophthalmological Society (DOG), German Ophthalmic Surgical Society (DOC), German Ophthalmological Academy (AAD), German Society of Cataract and Refractive Surgery (DGII) and the German Retinological Society (RG). Data were collected based on online programs and information provided by the offices and the managing committees. The numbers of female and male speakers and chairpersons were identified, as were the gender distributions of the specific program committees. Overall, the percentage of female speakers across all years and conferences surveyed averaged 25%, while female chairs averaged 17%. The percentage of females in the program committees ranged from 0% to 17%. There was an increase in the percentage of female speakers over 10 years (2013-2023). For the DOG (ptrend < 0.01) and the DOC (ptrend = 0.01) there was a significant rise, while it was highest at the DOG (37%) and lowest at the DGII (11%). The percentage of female chairs was in general lower than the percentage of female speakers for all conferences (between 11% and 26% in 2023). Only for the DOG was there a statistically significant increase over the 10 years (ptrend < 0.01). The representation of women as speakers and chairpersons at German ophthalmology conferences is low; these continue to be predominantly male dominated. Although there has been an increase in female representation over time, it remains lower than the overall proportion of women in the profession in 2023. Significant differences are observed between the various ophthalmological conferences. Further investigation into the underrepresentation of women at these conferences is necessary, and measures to encourage greater female participation at congresses should be implemented. N2 - In den letzten Jahren hat sich das Geschlechterverhältnis in der Augenheilkunde in Deutschland verändert. Derzeit sind etwa 50 % der in diesem Fach tätigen Ärztinnen und Ärzte weiblich, und bei den Medizinstudierenden liegt der Frauenanteil sogar bei rund 66 %. Diese Entwicklung stellt eine Umkehr des bisherigen Geschlechterverhältnisses im Sinne einer stärkeren Repräsentation von Frauen dar. Trotz dieser Veränderung zeigen zahlreiche internationale Studien, dass Frauen auf wissenschaftlichen Kongressen weiterhin unterrepräsentiert sind. Dies gilt insbesondere für ihre Beteiligung als geladene Rednerinnen, Vorsitzende von Sitzungen sowie als Mitglieder von Programmkommissionen. Diese Diskrepanz wirft die Frage auf, ob ähnliche Ungleichgewichte auch in Deutschland bestehen. Bisher gibt es keine systematische Untersuchung, die geschlechtsspezifische Unterschiede in der Repräsentation von Vortragenden, Vorsitzenden und Mitgliedern der Programmkommissionen auf ophthalmologischen Kongressen in Deutschland beleuchtet. Ziel dieser Studie ist es, das Ausmaß dieses Geschlechterunterschieds in der deutschen Ophthalmologie auf Kongressen zu untersuchen. Y1 - 2024 U6 - https://doi.org/10.1007/s00347-024-02154-x SN - 2731-7218 VL - 122 SP - 100 EP - 106 PB - Springer ER - TY - JOUR A1 - Degen, Jacqueline A1 - Storms, Mona A1 - Lee, Benjamin A1 - Jechow, Andreas A1 - Stoeckl, Anna A1 - Hoelker, Franz A1 - Jakhar, Aryan A1 - Walter, Thomas A1 - Walter, Stefan A1 - Mitesser, Oliver A1 - Hovestadt, Thomas A1 - Degen, Tobias T1 - Shedding light with harmonic radar: Unveiling the hidden impacts of streetlights on moth flight behavior JF - Proceedings of the National Academy of Sciences of the United States of America N2 - One of the most dramatic changes occurring on our planet is the ever- increasing extensive use of artificial light at night, which drastically altered the environment to which nocturnal animals are adapted. Such light pollution has been identified as a driver in the dramatic insect decline of the past years. One nocturnal species group experiencing marked declines are moths, which play a key role in food webs and ecosystem services such as plant pollination. Moths can be easily monitored within the illuminated area of a streetlight, where they typically exhibit disoriented behavior. Yet, little is known about their behavior beyond the illuminated area. Harmonic radar tracking enabled us to close this knowledge gap. We found a significant change in flight behavior beyond the illuminated area of a streetlight. A detailed analysis of the recorded trajectories revealed a barrier effect of streetlights on lappet moths whenever the moon was not available as a natural celestial cue. Furthermore, streetlights increased the tortuosity of flights for both hawk moths and lappet moths. Surprisingly, we had to reject our fundamental hypothesis that most individuals would fly toward a streetlight. Instead, this was true for only 4% of the tested individuals, indicating that the impact of light pollution might be more severe than assumed to date. Our results provide experimental evidence for the fragmentation of landscapes by streetlights and demonstrate that light pollution affects movement patterns of moths beyond what was previously assumed, potentially affecting their reproductive success and hampering a vital ecosystem service. Y1 - 2024 U6 - https://doi.org/10.1073/pnas.2401215121 VL - 121 IS - 42 PB - National Academy of Sciences ER - TY - JOUR A1 - Strachan, Laura M. A1 - Winkel, Carmen T1 - Oral Histories of Social, Cultural, and Environmental Changes in Saudi Arabia Before and After Saudi Aramco JF - Social Change N2 - Saudi Aramco’s influence upon the Kingdom of Saudi Arabia cannot be overstated. After the discovery of oil in 1938, a nationwide metamorphosis began to infiltrate desert communities, sleepy fishing villages, and traditional urban centres ultimately influencing the people and their environments in unimaginable ways. Becoming one of the world’s largest oil producers has meant the loss and/or transformation of traditional ways of life. Shepherds, pearl divers, fishermen, and farmers are today’s business owners, executives, and international leaders. How could the development of a single company influence a country and its populace so dramatically? Besides the financial gains, how were individuals, families, and ecosystems affected? What were some of the personal challenges experienced by Saudi citizens? In this paper, the authors address these questions and others using local Saudi knowledge. In total, 20 female university students who participated in an oral history project interviewed their family members to learn how Saudi Aramco affected them personally, their traditions, landscapes, and society more generally. Excerpts from the interviews are highlighted to expose the nuances experienced by the various research participants. Y1 - 2024 U6 - https://doi.org/10.1177/00490857241278782 VL - 54 IS - 4 SP - 561 EP - 576 PB - Sage ER - TY - CHAP A1 - Fitz, Lukas R. G. A1 - Scheeg, Jochen T1 - Content-And-Review Platform Engagement of End-Users and Local Businesses – An Explorative Analysis Based on Google Maps Data T2 - Digital Economy. Emerging Technologies and Business Innovation. ICDEc 2024. Lecture Notes in Business Information Processing N2 - One fundamental value proposition of every digital platform is to facilitate transactions between two or more stakeholders. Active user engagement is therefore a crucial success factor for platforms to thrive, grow and establish a competitive network. This paper delves into the topic of platform engagement on content-and-review platforms by using Google Maps as a research tool. Applying a qualitative approach, a descriptive analysis of local business entities’ data on Google Maps is elaborated, focusing particularly on engagement activi-ties in the conjunction of business-owners and end-users. The findings suggest that under-, over-, and non-engagement are less desirable for local business entities. Following a practice-oriented discussion, strategic pathways are proposed to leverage business value from platform engagement activities. Y1 - 2024 U6 - https://doi.org/10.1007/978-3-031-76365-6_12 VL - 530 SP - 179 EP - 192 PB - Springer ER - TY - JOUR A1 - Broscheit, Jessica T1 - Inspired by animal species: biomimicry in participatory research JF - Information technology : it N2 - Inspired by the rich tapestry of nature, biomimicry encourages designers, engineers, and researchers to draw inspiration from the natural world to create technological solutions. However, little is known about the usage of biomimicry in participatory research involving local people without technical expertise. In this paper, we present two case studies to explore how performative biomimicry is when applied in a participatory research process with local people of different ages. To this end, we conducted two different case studies and asked our participants to analyze the characteristics of different animal species to design an interactive prototype that addresses a specific task. Both case studies demonstrated promising potential for biomimicry, as the participants drew inspiration from animal species to develop functional prototypes and narratives that resonate on an emotional level. Finally, we discuss the benefits of integrating biomimicry in participatory research and how this method could be used to promote social change and transformation in the society, for example, in STEM education, digital literacy, and environmental awareness. Y1 - 2024 U6 - https://doi.org/10.1515/itit-2023-0121 VL - 66 IS - 2-3 SP - 56 EP - 63 PB - De Gruyter CY - Berlin ER -