@inproceedings{HenkelBestleFlassigetal.2025, author = {Henkel, Clara and Bestle, Dieter and Flassig, Peter and Janke, Christian and Slaby, Michal}, title = {Consideration of Balancing within the Fan-Blisk Design Process}, series = {Proceedings of Global Power and Propulsion Society, Shanghai, 2025}, booktitle = {Proceedings of Global Power and Propulsion Society, Shanghai, 2025}, publisher = {GPPS}, issn = {2504-4400}, doi = {10.33737/gpps25-tc-017}, pages = {1 -- 9}, year = {2025}, abstract = {The design of fan-blisks is a multi-criterion optimisation challenge primarily involving the aerodynamic shape optimisation of blade profiles and subsequent blade balancing, i.e., shifting profiles in axial and circumferential directions to avoid stress hotspots. Although it is already known that blade balancing affects aerodynamic properties, this correlation is often not taken into account, which is why it is usually performed as an independent step after solving the aerodynamic design problem. However, this assumption is questionable because such shifts should be used to control both secondary flow effects and resulting stress. Therefore, the paper proposes problem formulations combining both aspects. Since optimisation requires costly numerical evaluations, machine learning methods are investigated to predict aerodynamic performance and stress constraints more efficiently. This enables a global optimisation process by reducing computational costs. Various different surrogate types are investigated, where stress constraints are formulated either as regression task predicting stress maxima, or as classification problem directly assessing design feasibility.}, language = {en} } @inproceedings{MuellerMarkgrafVogeletal.2025, author = {M{\"u}ller, Katja and Markgraf, Klaus and Vogel, Andreas and Flassig, Peter and Flassig, Robert}, title = {Numerical Study of Ice Accretion on Fan Blades: Implications for the Design of Blade Geometries}, series = {ASME Turbo Expo 2025: Turbomachinery Technical Conference and Exposition, Memphis, Tennessee, USA, 2025}, booktitle = {ASME Turbo Expo 2025: Turbomachinery Technical Conference and Exposition, Memphis, Tennessee, USA, 2025}, publisher = {ASME}, isbn = {978-0-7918-8887-2}, doi = {10.1115/GT2025-152704}, pages = {12}, year = {2025}, abstract = {Ice formation on aircraft components due to the impact of supercooled droplets poses a severe safety risk. In particular, the formation of ice on the fan blades can lead to vibrations that affect the entire engine. While numerous studies have examined the effects of environmental conditions on ice accumulation, the influence of blade geometry has received little attention. This study investigates how variations in blade geometry affect ice accretion in a low-pressure compressor using a numerical approach. A Design of Experiments (DoE) is conducted on the NASA Rotor67, focusing on the sensitivity of ice formation to geometric modifications. The workflow includes geometry generation (ParaBlade), flow simulation (ANSYS CFX), and ice accretion modeling (ANSYS FENSAP-ICE) under rime ice conditions. The results reveal a strong correlation between the inlet metal angle and both accreted ice mass and maximum ice thickness. Furthermore, designs with good aerodynamic performance tend to exhibit higher ice accumulation. These findings enhance the understanding of icing behavior in low-pressure compressors and offer valuable insights for optimizing blade design in adverse environmental conditions.}, language = {en} } @inproceedings{HelmichBraubachSchulzetal.2025, author = {Helmich, Roland and Braubach, Lars and Schulz, Theresa and Jander, Kai}, title = {Securing End-to-End Encrypted File Sharing Services with the Messaging Layer Security Protocol}, series = {Intelligent Distributed Computing XVII, 2024}, booktitle = {Intelligent Distributed Computing XVII, 2024}, number = {1203}, publisher = {Springer}, doi = {10.1007/978-3-031-87639-4_7}, pages = {107 -- 122}, year = {2025}, abstract = {To protect data on the servers of cloud service providers, file-sharing services rely on End-to-End Encryption (E2EE). However, existing solutions have weaknesses that allow attackers to bypass E2EE permanently after stealing a clients keys once. In this paper, a concept for an E2EE file-sharing service is proposed which does not have this vulnerability. It is based on Messaging Layer Security (MLS) groups for key distribution, an authentication system based on asymmetric cryptography, Attribute-Based Access Control (ABAC) based access rights and a tamper-proof versioned storage system for synchronising sensitive data. The applicability of the concept is demonstrated by a prototype implementation and an evaluation based on benchmarks and a security analysis. Overall, the concept can fulfil the requirements of a basic file sharing service while providing stronger security guarantees than existing solutions.}, language = {en} } @inproceedings{SchulzJander2025, author = {Schulz, Theresa and Jander, Kai}, title = {Planless Agents: BDI Plan Generation Using LLMs}, series = {Intelligent Distributed Computing XVII, 2024}, booktitle = {Intelligent Distributed Computing XVII, 2024}, number = {1203}, publisher = {Springer}, doi = {10.1007/978-3-031-87639-4_15}, pages = {253 -- 268}, year = {2025}, abstract = {Belief-Desire-Intention (BDI) agents offer a unique approach for engi- neering complex behavior for individual agents in multi-agent systems. A developer can define goals for each agent, specifying the desired outcomes in various con- texts and implement plans as the means to reach those goals. The BDI reasoning engine can then proceed to automatically select goals to pursue (goal deliberation) and choose one or more of the provided plans to attempt to achieve them. However, usually plans or at least part of the plans have to be provided by the agent's developer before the system is deployed. In this paper we present an approach for BDI agents to generate their own plans using large language models (LLMs) using solely the available context information such as goal descriptions, available beliefs and their structural information. We show that the approach is viable in principle and explore its reliability as well as discuss further use of LLMs in the context of automating BDI-based agents.}, language = {en} } @inproceedings{FroschLindauerWinkel2025, author = {Frosch, Katharina and Lindauer, Friederike and Winkel, Carmen}, title = {Is Learning with an AI-Powered Chatbot for Everyone? A First Look at How Learning Preferences May Influence Learning Outcomes}, series = {Ubiquity Proceedings}, volume = {6}, booktitle = {Ubiquity Proceedings}, number = {1}, publisher = {ubiquity press}, doi = {10.5334/uproc.207}, pages = {1 -- 10}, year = {2025}, abstract = {In an era where AI-powered chatbots are increasingly being integrated into education and corporate learning, it is critical to determine whether these approaches benefit all learners or primarily cater to those with specific preferences. This study explores the interplay between learning preferences and learning outcomes in communication training using an AI-powered chatbot. In a field experiment with 17 participants, systematic thinkers and intrinsically motivated learners reported higher satisfaction and greater skill improvement, while those who preferred model learning and direct feedback benefited less. These findings suggest that AI-powered chatbots should be carefully designed to accommodate diverse learners and mitigate potential negative effects.}, language = {en} } @article{CzarneckaGrubisicPilottoetal.2025, author = {Czarnecka, Magdalena and Grubisic, Maja and Pilotto, Francesca and Jechow, Andreas and H{\"o}lker, Franz}, title = {Colours of the Night: Spectrum-Specific Impacts of Light Pollution on Biota}, series = {Global Change Biology}, volume = {31}, journal = {Global Change Biology}, number = {10}, publisher = {Wiley}, doi = {10.1111/gcb.70569}, pages = {1 -- 15}, year = {2025}, abstract = {Artificial light at night (ALAN) disrupts ecosystems by altering natural light cycles and affecting the physiology and behaviour of species, and represents a widespread and increasingly recognised global ecological threat. This meta-analysis investigates the effects of varying wavelengths and illuminance levels of ALAN on organisms. Broad-spectrum 'cool' light, enriched with blue and ultraviolet radiation, strongly disrupts circadian rhythms, melatonin production and nocturnal activity. However, contrary to common assumptions, broad-spectrum 'warm' light can be nearly as impactful as broad-spectrum 'cool' light lacking ultraviolet radiation, despite the predominant influence of short wavelengths on physiological processes. The impact of ALAN is not consistently dose-dependent, as even low light levels (\< 5 lx) can cause substantial biological disruptions. Thus, effective mitigation strategies require tailored solutions to specific ecological contexts and should generally avoid nocturnal illumination unless clearly needed, as there is no single 'safe dose' and 'safe spectrum' of ALAN.}, language = {en} } @article{Vollmer2025, author = {Vollmer, Michael}, title = {Nachtsicht ins All mit dem bloßen Auge: Sag mir, wie weit die Sterne steh'n}, series = {Physik in unserer Zeit}, volume = {2025}, journal = {Physik in unserer Zeit}, publisher = {Wiley}, doi = {10.1002/piuz.202501751}, pages = {2 -- 10}, year = {2025}, language = {de} } @article{Blasek2025, author = {Blasek, Katrin}, title = {K{\"u}nstliche Intelligenz in China und der EU}, series = {K{\"u}nstliche Intelligenz und Recht}, volume = {2025}, journal = {K{\"u}nstliche Intelligenz und Recht}, number = {3}, publisher = {Beck}, issn = {2943-6176}, pages = {100 -- 107}, year = {2025}, language = {de} } @article{Blasek2023, author = {Blasek, Katrin}, title = {EU-ID-Wallet - eine elektronische Brieftasche f{\"u}r die Europ{\"a}ische Union}, series = {Zeitschrift f{\"u}r das Recht der digitalen Wirtschaft}, volume = {2023}, journal = {Zeitschrift f{\"u}r das Recht der digitalen Wirtschaft}, number = {4}, publisher = {Wolters Kluwer}, issn = {2702-4040}, pages = {125 -- 130}, year = {2023}, language = {de} } @article{Blasek2023, author = {Blasek, Katrin}, title = {KI im Herbst 2023: G7 und Bletchley Park oder von der Notwendigkeit der Einheit in Vielfalt}, series = {ZD-Aktuell}, volume = {2023}, journal = {ZD-Aktuell}, number = {20}, publisher = {Beck}, pages = {01434}, year = {2023}, language = {de} } @article{Blasek2024, author = {Blasek, Katrin}, title = {Die Rolle von Scorewerten bei automatisierten Entscheidungen}, series = {Zeitschrift f{\"u}r Datenschutzrecht}, volume = {2024}, journal = {Zeitschrift f{\"u}r Datenschutzrecht}, number = {5}, publisher = {Beck}, issn = {3052-2811}, pages = {258 -- 263}, year = {2024}, language = {de} } @article{Blasek2023, author = {Blasek, Katrin}, title = {DSK-Empfehlungen f{\"u}r mehr Datenschutz bei Scoring-Verfahren}, series = {ZD-Aktuell}, volume = {2023}, journal = {ZD-Aktuell}, number = {14}, publisher = {Beck}, pages = {01297 -- 01298}, year = {2023}, language = {de} } @article{Blasek2023, author = {Blasek, Katrin}, title = {KI-Regulierung in der Volksrepublik China}, series = {Recht Digital}, volume = {2023}, journal = {Recht Digital}, number = {12}, publisher = {Beck}, issn = {2702-2404}, pages = {557 -- 564}, year = {2023}, language = {de} } @article{Blasek2024, author = {Blasek, Katrin}, title = {Anlasslose Parallelverarbeitung von Restschuldbefreiungen?}, series = {Zeitschrift f{\"u}r das Recht der digitalen Wirtschaft}, volume = {2024}, journal = {Zeitschrift f{\"u}r das Recht der digitalen Wirtschaft}, number = {4}, publisher = {Wolters Kluwer}, issn = {2702-4040}, pages = {115 -- 118}, year = {2024}, language = {de} } @article{KhuntsariaGachechiladzeLipartaetal.2025, author = {Khuntsaria, Irakli and Gachechiladze, Konstantine and Liparta, Elene and Kobulashvili, Tamar and Jorbenadze, Mariam and Revazishvili, Tamaz and Mamiseishvili, Ana and Kekelia, Elene and Topuridze, Marina and Sturua, Lela and Schrader, Thomas and Kldiashvili, Ekaterina}, title = {Strategic implementation of HPV vaccination to eliminate cervical cancer in Georgia}, series = {Public Health in Practice}, volume = {2025}, journal = {Public Health in Practice}, number = {10}, publisher = {Elsevier}, doi = {10.1016/j.puhip.2025.100679}, pages = {1 -- 4}, year = {2025}, abstract = {Objectives Human Papillomavirus (HPV) is a prevalent sexually transmitted infection and a leading cause of cervical cancer. In Georgia, cervical cancer ranks as the fifth most common cancer among women, with approximately 330 new cases and 200 deaths reported annually. Despite the availability of effective HPV vaccines, national vaccination coverage remains low. This study aimed to evaluate HPV vaccination coverage, analyze cervical cancer incidence trends, and model the potential impact of increased vaccination uptake on cancer prevention outcomes in Georgia. Study design A retrospective observational study was conducted using national health registry data and modeling projections to assess the burden of cervical cancer and estimate the effect of scaled vaccination coverage. Methods National health databases were used to analyze HPV vaccination rates and cervical cancer incidence. Descriptive statistics, chi-square tests, and linear regression were applied to identify trends and disparities. Additionally, a dynamic transmission model was developed to simulate the 10-year impact of increasing HPV vaccination coverage on cervical cancer incidence. Results The crude cervical cancer incidence rate was 15.7 per 100,000 women, with an age-standardized rate of 10.6 per 100,000. In 2022, only 38 \% of eligible girls aged 13-18 received the first HPV vaccine dose, and 26 \% completed the second dose. Regional disparities in vaccination and screening were noted, and overall screening coverage declined to 13,890 women screened in 2022. Modeling showed that increasing vaccine coverage to 60 \% could reduce cervical cancer incidence by 50 \% (preventing ∼163 cases); coverage of 80 \% and 90 \% could reduce incidence by 70 \% and 85 \%, preventing 228 and 276 cases, respectively. Conclusion Low HPV vaccination uptake in Georgia (38 \% first dose and 26 \% dull coverage) and declining screening limit cervical cancer prevention. Modeling shows that increasing vaccination coverage to 60-90 \% could prevent 163-276 cases over the next decade. Strengthening vaccination and screening strategies is essential to move forward elimination.}, language = {en} } @inproceedings{Blasek2025, author = {Blasek, Katrin}, title = {Umbruch in der Scorewelt - Zur Transparenz-Initiative der Schufa}, series = {Digitalregulierung in der Bew{\"a}hrung : was bringt das neue Recht? : Tagungsband DSRI-Herbstakademie 2025}, volume = {2025}, booktitle = {Digitalregulierung in der Bew{\"a}hrung : was bringt das neue Recht? : Tagungsband DSRI-Herbstakademie 2025}, editor = {Bernzen, Anna and Heinze, Christian and Steinr{\"o}tter, Bj{\"o}rn}, publisher = {Beck}, isbn = {978-3-406-84186-6}, pages = {491 -- 510}, year = {2025}, language = {de} } @book{BurgerMenzel2025, author = {Burger-Menzel, Bettina}, title = {Multiperspektivische {\"O}konomik: Menschenbilder - Systemans{\"a}tze - Steuerungsideen}, edition = {1}, publisher = {Springer}, isbn = {978-3-658-48617-4}, doi = {10.1007/978-3-658-48617-4}, pages = {XIX, 460}, year = {2025}, abstract = {Wie gelingt Zukunftsf{\"a}higkeit in einer komplexen Welt? Unsere Welt ist im Wandel - technologisch, global, {\"o}kologisch. Selbst Handlungskonzepte wie das "gr{\"u}ne Wachstum" wirken zunehmend unsicher, vor allem auf einem Planeten mit begrenzten Ressourcen und wachsender Weltbev{\"o}lkerung. Dieses Lehrbuch l{\"a}dt dazu ein, neue Perspektiven zu gewinnen: Wie k{\"o}nnen sich Unternehmen und Standorte zukunftsf{\"a}hig ausrichten? Und: Was m{\"u}ssen wir aus Sicht der Volkswirtschaftslehre - disziplin{\"a}r und interdisziplin{\"a}r - hierf{\"u}r {\"u}ber komplex adaptive Systeme lernen? Das erforderliche Komplexit{\"a}tsverst{\"a}ndnis wird in drei Teilen Schritt f{\"u}r Schritt entwickelt und mit Blick auf die Nachhaltigkeit anwendungsbezogen veranschaulicht. Teil 1 bietet inspirierende Einblicke in die Vielfalt menschlicher Handlungsweisen, vom rationalen bis zum vielschichtigen Menschen, der sich von Narrativen, Emotionen und kognitiven Verzerrungen beeinflussen l{\"a}sst. Teil 2 sieht den Menschen als Systemelement bzw. Akteur und beleuchtet systemische Wechselwirkungen bei zunehmendem Komplexit{\"a}tsgrad. Die Vorstellungen von einem "guten Leben" wandeln sich, von materiellen Lebensstandards und sozialer Gerechtigkeit hin zu Krisenresilienz und transformativer Leistungsf{\"a}higkeit. Teil 3 stellt Ideen vor, wie die Governance menschengemachter Systeme mittels Regulierung, Kulturentwicklung und Nudging gelingen kann, wenn wir von der Partizipation in Wissens- und Lernnetzwerken und potenzieller Selbstwirksamkeit ausgehen. Das Buch bietet Impulse f{\"u}r Lehre, Forschung und Praxis. Es eignet sich nicht nur f{\"u}r Studierende und Lehrende der Volkswirtschaftslehre. Es er{\"o}ffnet auch Lehrenden der Sekundarstufe und Erwachsenenbildung neue Sichten sowie denjenigen, die in Wirtschaft, Verb{\"a}nden, Politik, Verwaltung oder in zivilgesellschaftlichen Organisationen beratend aktiv sind. Kurzum: Ein Buch f{\"u}r alle, die systemischen Wandel nicht nur verstehen, sondern mitgestalten wollen.}, language = {de} } @article{LevinaLindauerRevina2025, author = {Levina, Olga and Lindauer, Friederike and Revina, Aleksandra}, title = {A Participatory Workshop Design for Engaging Young People in IT Sustainability}, series = {Education Science}, journal = {Education Science}, number = {15 (12)}, publisher = {MDPI}, doi = {10.3390/educsci15121570}, pages = {23}, year = {2025}, abstract = {This paper presents an approach to teaching and consolidating skills in the context of sustainability "Prototyping Sustainability-Designing Sustainable IT" (ProS), using the workshop format for participatory and creative learning. The workshop integrates principles from Education for Sustainable Development (ESD), transformative and experiential learning, participatory design, and critical reflection on the digital age to engage participants in critically examining the environmental, economic, and social impacts of digital technologies in the context of Sustainable Development Goals (SDGs). Structured in five modular phases, from self-reflection and knowledge activation to collaborative prototyping and peer evaluation, the workshop offers a hands-on, gamified learning experience centred on real-world sustainability challenges. Learners create user-centred paper-based prototypes for digital products using tactile materials, persona-driven scenarios and knowledge of sustainable product characteristics gained in the workshop. Outcome measurement is supported through pre- and post-workshop surveys, peer voting templates, and paper-based prototype artefacts, enabling rich insight into behavioural intentions and learning gains. The paper discusses the educational value and sustainability relevance of the workshop engaging young people in critically reflecting on the environmental, economic, and social consequences of digitalization. Finally, it highlights challenges and limitations and proposes directions for future research.}, language = {en} } @article{WereteckiSharmaKristal2025, author = {Weretecki, Patrick and Sharma, Ipshita and Kristal, Samuel}, title = {Unlocking the secrets of award-winning retail store design - The case of Deutsche Telekom in Germany}, series = {transfer - Zeitschrift f{\"u}r Kommunikation und Markenmanagement}, volume = {71}, journal = {transfer - Zeitschrift f{\"u}r Kommunikation und Markenmanagement}, number = {4}, publisher = {Deutsche Werbewissenschaftliche Gesellschaft e.V.}, year = {2025}, abstract = {Despite the rise of digital sales channels, Deutsche Telekom continues to invest heavily in its physical retail operations. This case study demonstrates how the company leverages stores as strategic innovation hubs that extend far beyond their traditional sales function. The analysis highlights the role of store design, technological integration, and symbolic branding as key drivers of customer experience and brand equity. Flagship stores serve as a testing ground for testing new concepts, while local adaptations strengthen cultural relevance within communities. Findings suggest that in highly digital industries, physical retail remains strategically valuable - not as a relic of the past, but as a platform for differentiation, customer engagement, and innovation. Properly designed, physical stores complement digital channels and reinforce the overall brand experience.}, language = {en} } @inproceedings{Blasek2024, author = {Blasek, Katrin}, title = {Datenschutzrechtliche Aspekte der geplanten EU-ID-Wallet}, series = {Das IT-Recht vor der (europ{\"a}ischen) Zeitenwende? : Tagungsband Herbstakademie 2023}, volume = {2023}, booktitle = {Das IT-Recht vor der (europ{\"a}ischen) Zeitenwende? : Tagungsband Herbstakademie 2023}, editor = {Bernzen, Anna and Fritzsche, J{\"o}rg and Heinze, Christian and Thomsen, Oliver}, publisher = {OlWIR Verlag f{\"u}r Wirtschaft, Informatik und Recht}, isbn = {978-3-95599-077-0}, pages = {73 -- 90}, year = {2024}, language = {de} }