@inproceedings{SchraderLoewePelchenetal.2015, author = {Schrader, Thomas and L{\"o}we, Katharina and Pelchen, Lutz and Beck, Eberhard}, title = {Analyse der Patientensicherheit in medizinisches Prozessen: der OPT - Modell - Generator}, series = {MedPro 2015, Medizinische Prozesse - Patienten - Sicherheit : Tagungsband ; Brandenburg an der Havel, 5. November 2015}, booktitle = {MedPro 2015, Medizinische Prozesse - Patienten - Sicherheit : Tagungsband ; Brandenburg an der Havel, 5. November 2015}, editor = {Beck, Eberhard}, publisher = {Fachhochschule Brandenburg}, address = {Brandenburg an der Havel}, pages = {49 -- 61}, year = {2015}, language = {de} } @inproceedings{SchraderLoewePelchenetal.2015, author = {Schrader, Thomas and L{\"o}we, Katharina and Pelchen, Lutz and Beck, Eberhard}, title = {Sicherheits- und Risikoanalyse in medizinischen Prozessen - das Open-Process-Task-Model}, series = {MedPro 2015, Medizinische Prozesse - Patienten - Sicherheit : Tagungsband ; Brandenburg an der Havel, 5. November 2015}, booktitle = {MedPro 2015, Medizinische Prozesse - Patienten - Sicherheit : Tagungsband ; Brandenburg an der Havel, 5. November 2015}, publisher = {Fachhochschule Brandenburg}, address = {Brandenburg}, pages = {38 -- 48}, year = {2015}, language = {de} } @inproceedings{HascheIngwerCreutzburgetal.2017, author = {Hasche, Eberhard and Ingwer, Patrick and Creutzburg, Reiner and Schrader, Thomas and Laube, Frederick and Sigwarth, Timo}, title = {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}, series = {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}, booktitle = {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}, editor = {Creutzburg, Reiner}, publisher = {Curran Associates, Inc.}, address = {Red Hook, NY}, isbn = {978-1-5108-4600-5}, year = {2017}, language = {en} } @inproceedings{Thiersl’OrteyeOrlowskietal.2015, author = {Thiers, Angelina and l'Orteye, Annett and Orlowski, Katja and Schrader, Thomas}, title = {Analyzing the Sensorimotor Training Using Wireless Sensors: Studying the Effects of Balance Boards with Different Dimensions of Instability}, series = {Sports Science Research and Technology Support : International Congress, icSPORTS 2013, Vilamoura, Algarve, Portugal, September 20-22, 2013. Revised Selected Papers}, booktitle = {Sports Science Research and Technology Support : International Congress, icSPORTS 2013, Vilamoura, Algarve, Portugal, September 20-22, 2013. Revised Selected Papers}, editor = {Cabri, Jan}, publisher = {Springer}, address = {Cham}, isbn = {978-331-91754-8-5}, doi = {10.1007/978-3-319-17548-5_5}, pages = {57 -- 71}, year = {2015}, language = {en} } @inproceedings{SigwarthLoeweBecketal.2015, author = {Sigwarth, Timo and L{\"o}we, Katharina and Beck, Eberhard and Pelchen, Lutz and Schrader, Thomas}, title = {Conceptual ontology of prospective risk analysis in medical environments - the OPT-Model-Ontology}, series = {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}, booktitle = {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}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-5090-1950-2}, doi = {10.1109/IntelCIS.2015.7397202}, pages = {88 -- 93}, year = {2015}, language = {en} } @inproceedings{SchraderOrlowskiThiersetal.2014, author = {Schrader, Thomas and Orlowski, Katja and Thiers, Angelina and Schrader, Kerstin and l'Orteye, Annett}, title = {Analyzes of Influencing Factors to the Sensorimotor Training - Technical Support Systems in the Physiotherapy}, series = {Proceedings of the 2nd International Congress on Sports Sciences Research and Technology Support, 24. bis 26. Oktober 2014, Rom, Italien}, volume = {Vol. 1}, booktitle = {Proceedings of the 2nd International Congress on Sports Sciences Research and Technology Support, 24. bis 26. Oktober 2014, Rom, Italien}, publisher = {SciTePress, Science and Technology Publications}, address = {Set{\´u}bal, Portugal}, isbn = {978-989-758-057-4}, doi = {10.5220/0005093000450052}, pages = {45 -- 52}, year = {2014}, language = {en} } @inproceedings{SchraderLoewePelchenetal.2015, author = {Schrader, Thomas and L{\"o}we, Katharina and Pelchen, Lutz and Beck, Eberhard}, title = {Prospective, knowledge based clinical risk analysis: The OPT-model}, series = {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}, booktitle = {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}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-5090-1950-2}, doi = {10.1109/IntelCIS.2015.7397204}, pages = {94 -- 99}, year = {2015}, language = {en} } @inproceedings{HascheSchraderCreutzburg2017, author = {Hasche, Eberhard and Schrader, Thomas and Creutzburg, Reiner}, title = {Blackmagic Production Camera Raw Color Investigation by Spectral Analysis of Macbeth Color Charts}, series = {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}, booktitle = {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}, publisher = {Curran Associates, Inc.}, address = {Red Hook, NY}, isbn = {978-1-5108-4625-8}, pages = {22 -- 33}, year = {2017}, language = {en} } @inproceedings{CraigFitzMiller2025, author = {Craig, Kevin and Fitz, Lukas R. G. and Miller, Kasey}, title = {IT Identity fostering User Innovation on Digital Platforms: The Role of Self-Esteem}, series = {AMCIS 2025, 31st Americas Conference on Information Systems, Montr{\´e}al, Canada, 2025}, booktitle = {AMCIS 2025, 31st Americas Conference on Information Systems, Montr{\´e}al, Canada, 2025}, publisher = {Association for Information Systems}, pages = {1 -- 9}, year = {2025}, abstract = {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.}, language = {en} } @inproceedings{OrlowskiGraefeTetzlaffetal.2020, author = {Orlowski, Katja and Gr{\"a}fe, Gina and Tetzlaff, Laura and Schrader, Thomas and Beck, Eberhard}, title = {Individualized Computer-based Training for Elderly in Nursing Homes: A Pilot Study}, series = {Proceedings of the 13th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 5: HEALTHINF, Valletta, Malta}, booktitle = {Proceedings of the 13th International Joint Conference on Biomedical Engineering Systems and Technologies - Volume 5: HEALTHINF, Valletta, Malta}, publisher = {SciTePress - Science and Technology Publications, Lda.}, address = {Set{\´u}bal, Portugal}, isbn = {978-989-758-398-8}, doi = {10.5220/0009162106640669}, pages = {664 -- 669}, year = {2020}, language = {en} } @inproceedings{VielhauerLoewePilgermann2025, author = {Vielhauer, Claus and Loewe, Fabian and Pilgermann, Michael}, title = {Towards Modeling Hidden \& Steganographic Malware Communication based on Images}, series = {IH\&MMSEC '25: ACM Workshop on Information Hiding and Multimedia Security, San Jose, CA, USA, 2025}, booktitle = {IH\&MMSEC '25: ACM Workshop on Information Hiding and Multimedia Security, San Jose, CA, USA, 2025}, doi = {10.1145/3733102.3733152}, pages = {52 -- 63}, year = {2025}, abstract = {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.}, language = {en} } @inproceedings{FitzVeldyaevaKunzeetal.2025, author = {Fitz, Lukas R. G. and Veldyaeva, Ekaterina and Kunze, Adrian and Scheeg, Michaela and Scheeg, Jochen}, title = {aiSnoop: An AI-assisted Social Listening Tool for SME Managers}, series = {31st Americas Conference on Information Systems, AMCIS 2025, Montr{\´e}al, Canada, 2025}, booktitle = {31st Americas Conference on Information Systems, AMCIS 2025, Montr{\´e}al, Canada, 2025}, publisher = {Association for Information Systems}, pages = {1 -- 11}, year = {2025}, abstract = {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.}, language = {en} } @inproceedings{TeutenbergFitzScheeg2025, author = {Teutenberg, Lukas and Fitz, Lukas R. G. and Scheeg, Jochen}, title = {Current Design Practices in Applied Augmented Reality Research: A Methodological Review}, series = {Computer-Human Interaction Research and Applications. CHIRA, 2024}, booktitle = {Computer-Human Interaction Research and Applications. CHIRA, 2024}, publisher = {Springer}, doi = {10.1007/978-3-031-82633-7_9}, pages = {131 -- 146}, year = {2025}, abstract = {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.}, language = {en} } @inproceedings{VeldyaevaFitzScheegetal.2025, author = {Veldyaeva, Ekaterina and Fitz, Lukas R. G. and Scheeg, Michaela and Scheeg, Jochen}, title = {Unlocking AI for SMEs: How an Educational Escape Room Shapes Perceptions towards Technology Adoption Decision-Making}, series = {Proceedings of the 58th Hawaii International Conference on System Sciences, Waikoloa, HI, USA, 2025}, booktitle = {Proceedings of the 58th Hawaii International Conference on System Sciences, Waikoloa, HI, USA, 2025}, pages = {4905 -- 4914}, year = {2025}, abstract = {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.}, language = {en} } @inproceedings{PepeLasenbyBuchholz2024, author = {Pepe, Alberto and Lasenby, Joan and Buchholz, Sven}, title = {CGAPoseNet+GCAN: A Geometric Clifford Algebra Network for Geometry-aware Camera Pose Regression}, series = {Winter Conference on Applications of Computer Vision, Waikoloa, Hawaii, US, 2024}, booktitle = {Winter Conference on Applications of Computer Vision, Waikoloa, Hawaii, US, 2024}, publisher = {IEEE}, doi = {10.1109/WACV57701.2024.00646}, pages = {6593 -- 6603}, year = {2024}, abstract = {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.}, language = {en} } @inproceedings{WangNitzeHofstedtetal.2024, author = {Wang, Tingting and Nitze, Andr{\´e} and Hofstedt, Petra and L{\"o}ffler, Sven and Hennig, Silvia and Klinge, Alexander}, title = {Technische Machbarkeit von l{\"a}ndlichem On-Demand-Verkehr: Anforderungen an eine Open-Source-Software-Architektur}, series = {24. Nachwuchswissenschaftler:innenkonferenz}, booktitle = {24. Nachwuchswissenschaftler:innenkonferenz}, number = {3}, publisher = {Hochschule Mittweida}, address = {Mittweida}, issn = {1437-7624}, doi = {10.48446/opus-15430}, url = {http://nbn-resolving.de/urn:nbn:de:bsz:mit1-opus4-154308}, pages = {361 -- 366}, year = {2024}, abstract = {On-Demand-Verkehr bezeichnet Mobilit{\"a}tsangebote, die auf Bestellung verf{\"u}gbar sind. Ziel ist es, durch flexible Mobilit{\"a}tsangebote L{\"u}cken im l{\"a}ndlichen {\"o}ffentlichen Personennahverkehr ({\"O}PNV) zu schließen, insbesondere in d{\"u}nn besiedelten R{\"a}umen und zu Randzeiten des Tages. Die Einf{\"u}hrung solcher Dienste gestaltet sich f{\"u}r viele Kommunen jedoch aufgrund der hohen Lizenzgeb{\"u}hren f{\"u}r propriet{\"a}re Software als {\"a}ußerst schwierig, insbesondere in strukturschwachen Regionen, die solche Dienste besonders ben{\"o}tigen. Im Rahmen des Projekts "Open-Source-Software f{\"u}r l{\"a}ndlichen On-Demand-Verkehr" (OSLO) wurde die Umsetzbarkeit einer niedrigschwelligen Open-Source-L{\"o}sung gepr{\"u}ft. Diese L{\"o}sung soll langfristig in die Open-Source-Mobilit{\"a}tsplattform bbnavi integriert werden, um die Nutzung vorhandener Mobilit{\"a}tsdaten zu erleichtern, Interoperabilit{\"a}t zu gew{\"a}hrleisten und die Anpassung an andere Regionen zu vereinfachen. Das Konzept beinhaltet eine Software-Architektur, einen speziell f{\"u}r den l{\"a}ndlichen Nahverkehr entwickelten intermodalen Routing-Algorithmus und ein Betriebs- und Organisationsmodell ([1]). In diesem Beitrag wird beschrieben, wie eine effiziente Software-Architektur f{\"u}r 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.}, subject = {Open Source}, language = {de} } @inproceedings{Levina2024, author = {Levina, Olga}, title = {Incorporating Ethical Aspects in Information Systems Requirements Engineering}, series = {Perspectives in Business Informatics Research, 23rd International Conference on Business Informatics Research, BIR 2024, Prag, Tschechien, September 11-13, 2024}, booktitle = {Perspectives in Business Informatics Research, 23rd International Conference on Business Informatics Research, BIR 2024, Prag, Tschechien, September 11-13, 2024}, publisher = {Springer}, doi = {10.1007/978-3-031-71333-0_10}, pages = {153 -- 161}, year = {2024}, abstract = {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.}, language = {en} } @inproceedings{KerstenBuzinHirsch2024, author = {Kersten, Philipp and Buzin, Johannes and Hirsch, S{\"o}ren}, title = {Wireless Sensor Nodes for Condition Based Maintenance in Railway Systems}, series = {IEEE Sensors Conference, Kobe, Japan, 2024}, booktitle = {IEEE Sensors Conference, Kobe, Japan, 2024}, publisher = {IEEE}, doi = {10.1109/SENSORS60989.2024.10784508}, pages = {1 -- 4}, year = {2024}, abstract = {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.}, language = {en} } @inproceedings{PepeLasenbyBuchholz2024, author = {Pepe, Alberto and Lasenby, Joan and Buchholz, Sven}, title = {GA-ReLU: an activation function for Geometric Algebra Networks applied to 2D Navier-Stokes PDEs}, series = {ICLR 2024 Workshop on AI4DifferentialEquations In Science, Wien, {\"O}sterreich}, booktitle = {ICLR 2024 Workshop on AI4DifferentialEquations In Science, Wien, {\"O}sterreich}, pages = {1 -- 6}, year = {2024}, abstract = {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.}, language = {en} } @inproceedings{FitzScheeg2024, author = {Fitz, Lukas R. G. and Scheeg, Jochen}, title = {Content-And-Review Platform Engagement of End-Users and Local Businesses - An Explorative Analysis Based on Google Maps Data}, series = {Digital Economy. Emerging Technologies and Business Innovation. ICDEc 2024. Lecture Notes in Business Information Processing}, volume = {530}, booktitle = {Digital Economy. Emerging Technologies and Business Innovation. ICDEc 2024. Lecture Notes in Business Information Processing}, publisher = {Springer}, doi = {10.1007/978-3-031-76365-6_12}, pages = {179 -- 192}, year = {2024}, abstract = {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.}, language = {en} } @inproceedings{MuellerFlassigFlassig2024, author = {M{\"u}ller, Katja and Flassig, Peter and Flassig, Robert}, title = {Numerical Simulations and Sensitivity Analysis of Ice Formation on Fan Blades}, series = {ASME Turbo Expo 2024: Turbomachinery Technical Conference and Exposition, London, 2024}, booktitle = {ASME Turbo Expo 2024: Turbomachinery Technical Conference and Exposition, London, 2024}, publisher = {ASME}, isbn = {978-0-7918-8806-3}, doi = {10.1115/GT2024-125715}, pages = {10}, year = {2024}, abstract = {In-flight icing, the formation of ice during flight, poses risks to the safety and reliability of aircraft. Due to environmental conditions, ice accumulation occurs on the low-pressure compressor blades of an engine, diminishing aerodynamic performance and potentially causing damage to the engine. Numerical simulations of ice accretion are conducted on the blades of the NASA Rotor 67 utilizing the Computational Fluid Dynamics (CFD) software ANSYS CFX and the in-flight icing software FENSAP-ICE. One-dimensional and two-dimensional sensitivity studies aim to analyze the influences of temperature, droplet diameter and liquid water content (LWC) on the resulting ice build-up on the blade. The analyses reveal that ice accumulates predominantly at the leading edge of the blade, where collection efficiency is maximal. Additionally, an ice layer forms at the blade root on the pressure side. While LWC and temperature exerts a significant influence on the ice mass, only a marginal impact on droplet diameter is observed.}, language = {en} } @inproceedings{HagenHascheCreutzburg2024, author = {Hagen, Dirk and Hasche, Eberhard and Creutzburg, Reiner M.}, title = {The 300th anniversary of Immanuel Kant: opportunities and challenges of the mega-event with ethically oriented XR and VFX}, series = {SPIE Defense + Commercial Sensing, 2024, National Harbor, Maryland, United States}, booktitle = {SPIE Defense + Commercial Sensing, 2024, National Harbor, Maryland, United States}, doi = {10.1117/12.3025603}, pages = {193 -- 204}, year = {2024}, abstract = {The 300th birthday of the world-famous German philosopher Immanuel Kant (1724-1804) in 2024 offers an extraordinary opportunity to explore integrating advanced technologies into cultural mega-events. This paper examines the opportunities and challenges of using various technologies, such as Extended Reality (XR) and Visual Effects (VFX), to bring this essential European intellectual to a broader audience. These technologies, including technological advances based on real-time rendering in conjunction with LED volumes and high-quality 3D assets, offer immersive and interactive event experiences. However, the use of these technologies presents specific challenges, such as processing limitations and the need to create specialized content, including the development of 3D models relevant to the life and philosophy of Immanuel Kant. This article provides an overview of the current state of such opportunities and challenges and examines their application in the context of this cultural mega-event. The aim is to create a compelling event experience, e.g., as part of a museum visit, while simultaneously using technology in a meaningful educational way. It is essential not to overload historical and intellectual personalities such as Immanuel Kant with technological possibilities in the sense of an ethical responsibility. At the same time, the creation and communication of knowledge require explanation in a museum context or another explanatory framework.}, language = {en} } @inproceedings{TranconyWidemannLepper2024, author = {Tranc{\´o}n y Widemann, Baltasar and Lepper, Markus}, title = {Imagine There's No Source Code: Replay Diagnostic Location Information in Dynamic EDSL Meta-programming}, series = {MPLR 2024: Proceedings of the 21st ACM SIGPLAN International Conference on Managed Programming Languages and Runtimes}, booktitle = {MPLR 2024: Proceedings of the 21st ACM SIGPLAN International Conference on Managed Programming Languages and Runtimes}, editor = {Ertl, M. Anton and Kirsch, Christoph M.}, publisher = {ACM}, address = {New York}, doi = {10.1145/3679007.3685061}, pages = {1 -- 11}, year = {2024}, abstract = {Programs in embedded domain-specific languages are realized as graphs of objects of the host language rather than as static input texts. This property enables dynamic meta-programming, but also makes it harder to attach location information to diagnostic messages that arise at a later stage, after the program graph construction. Thus, EDSL-generating expressions and algorithms can be difficult to debug. Here, we present a technique for transparently capturing and replaying location information about the origin of EDSL program objects. It has been implemented in the context of the LLJava-live EDSL-to-bytecode compiler framework on the JVM. The basic idea can be generalized to other contexts, and to any managed runtime environment with reified stack traces}, language = {en} } @inproceedings{FitzScheegScheeg2024, author = {Fitz, Lukas R. G. and Scheeg, Michaela and Scheeg, Jochen}, title = {Information, Inspiration, Innovation - Designing an Open Innovation Platform for SME Digital Transformation Projects}, series = {CENTERIS - International Conference on ENTERprise Information Systems / ProjMAN - International Conference on Project MANagement / HCist - International Conference on Health and Social Care Information Systems and Technologies 2023}, booktitle = {CENTERIS - International Conference on ENTERprise Information Systems / ProjMAN - International Conference on Project MANagement / HCist - International Conference on Health and Social Care Information Systems and Technologies 2023}, publisher = {Elsevier}, doi = {10.1016/j.procs.2024.06.276}, pages = {11009 -- 11114}, year = {2024}, abstract = {When small- and medium-sized Enterprises (SMEs) pursue digital transformation (DT) projects, awareness for available solutions and exploration of best practices and collaboration opportunities belong to key activities. This short paper presents background, design and preliminary evaluation of an open innovation (OI) platform for SME DT, which showcases projects completed by collaborating expert institutions and offers new project pitches. Initial findings from user tests with SME practitioners indicate that the solution supports SMEs in DT exploration phases. Moreover, insights on SME OI platform design criteria are derived.}, language = {en} } @inproceedings{DoudkinKindsmueller2024, author = {Doudkin, Alexander and Kindsm{\"u}ller, Martin Christof}, title = {Do not touch! - An artistic climate data visualization using motion capturing and 3D computer graphics}, series = {Mensch und Computer 2024 - Workshopband, Gesellschaft f{\"u}r Informatik e.V., 01.-04. September 2024, Karlsruhe, German}, booktitle = {Mensch und Computer 2024 - Workshopband, Gesellschaft f{\"u}r Informatik e.V., 01.-04. September 2024, Karlsruhe, German}, publisher = {Gesellschaft f{\"u}r Informatik e.V.}, address = {Karlsruhe}, doi = {10.18420/muc2024-mci-demo-319}, pages = {1 -- 3}, year = {2024}, abstract = {This demo explores an innovative artistic installation that creatively visualizes global temperature data using graphical visualization and motion capture technologies. By combining video-based posture capturing of nearby individuals with a dynamically rendered 3D model of the planet Earth, this installation offers an interactive and immersive experience. The goal is to transform climate change data into an engaging visual format, making it more accessible and impactful for a wide range of audiences.}, language = {en} } @inproceedings{VeldyaevaFitzScheeg2024, author = {Veldyaeva, Ekaterina and Fitz, Lukas R. G. and Scheeg, Jochen}, title = {Gamifying IT Service Management Education for Future IT Professionals}, series = {Pacific Asia Conference on Information Systems, Ho Chi Minh City, Vietnam, 2024}, booktitle = {Pacific Asia Conference on Information Systems, Ho Chi Minh City, Vietnam, 2024}, pages = {1 -- 9}, year = {2024}, abstract = {IT Service Management (ITSM) education is nowadays an established subject of IT-related higher education programs worldwide. The recent years have witnessed significant developments in software and ITSM frameworks, which underscores the importance of adapting educational formats to meet the latest standards. Recent developments include the introduction of practice-oriented approaches and case-based learning. Building upon previous literature, this study describes and evaluates the first iteration of a teaching case integrating a simulation game for practicing ITIL® 4 foundations in an undergraduate ITSM curriculum. The game-based approach shows scalability and dynamism, fostering high student engagement and content comprehension. It represents a promising avenue for training IT workers and contributes to ongoing ITSM education development.}, language = {en} } @inproceedings{Kraska2024, author = {Kraska, Martin}, title = {SMath + Maxima - Powerful Tool for Engineering Calculations}, series = {2024 7th International Conference on Information Technologies in Engineering Education (Inforino), Moscow, Russian Federation}, booktitle = {2024 7th International Conference on Information Technologies in Engineering Education (Inforino), Moscow, Russian Federation}, publisher = {IEEE}, isbn = {979-8-3503-7136-9}, doi = {10.1109/Inforino60363.2024.10551993}, pages = {1 -- 5}, year = {2024}, abstract = {SMath Studio is mathematical notebook software similar to Mathcad. Its outstanding and intuitive support for scientific units makes it an invaluable asset in higher engineering education. SMath Studio has been used for more than ten years in various courses at Brandenburg University of Applied Sciences, Germany (Technische Hochschule Brandenburg, THB). To enhance the usability of the software, substantial contributions have been made. One of them is the Maxima plugin for access to the free and open-source computer algebra system Maxima. This plugin combines the flexible notebook format of SMath Studio with powerful symbolic functions like integrals and solvers for algebraic and differential equations. Additionally, the plugin adds interactive 3D graphics to SMath. The paper discusses the basic design, features, and limitations, and showcases some applications.}, language = {en} } @inproceedings{Markgraf2024, author = {Markgraf, Klaus}, title = {Entwicklung eines Tools zur spezifischen, lastgangbasierten Eigenverbrauchsoptimierung mittels PV-Leistungsprognose}, series = {Konferenz: 18. Symposium Energieinnovation, 2024, Graz/Austria}, booktitle = {Konferenz: 18. Symposium Energieinnovation, 2024, Graz/Austria}, doi = {10.6084/m9.figshare.25610976}, pages = {1 -- 10}, year = {2024}, abstract = {The German government's initiative to cover 80\% of the gross electricity supply with renewable energies by 2050 brings considerable ecological benefits, but also poses several challenges. One of these challenges is the growing number of photovoltaic systems (PV systems), which, due to their high feed-in power, already pose a risk to the security of the electricity distribution grid during long periods of sunny weather. To counteract this, active research is being carried out in the field of PV power forecasting. This research is primarily aimed at providing the grid operator with a predicted power output, which enables a longer planning horizon and thus increases the operational grid security. However, the considerable annual electricity consumption of private households and the increasing spread of PV systems for self-consumption show that the energy behavior of households, especially self-consumption, also influences grid security. Additionally, households have an incentive to boost their self-consumption because the cost of drawing each kilowatt-hour from the grid is substantially higher than the compensation received for injecting an equivalent amount of energy back into the grid. However, as of now, there is no software available that easily enables households to tailor the usage patterns of their electrical appliances according to a photovoltaic (PV) forecast. The project described here aims to close this gap by creating such software. Various PV forecasting models are used and tested for their suitability for this purpose. A self-generated optimization process is implemented in this project to optimize the consumer configuration based on the PV forecasts. The here-developed tool enables the user to enter parameters for his PV system and the specific load profiles of his electrical appliances. Based on this data, the optimization algorithm determines a consumption plan with a forecast horizon until the end of the next day that maximizes the user's self-consumption. To validate the tool, the optimization process is carried out over a period of 60 days using a predefined scenario and the results are compared with a scenario in which the electrical appliances are intuitively operated at midday. The analysis of these results ultimately shows the potential impact of such a tool on the economic efficiency of private households and the supply stability.}, language = {en} } @inproceedings{LepperOehlerKinzleretal.2023, author = {Lepper, Markus and Oehler, Michael and Kinzler, Hartmuth and Tranc{\´o}n y Widemann, Baltasar}, title = {Mathematische Remodellierung zur Erforschung der exakten Semantik einfacher konventioneller Notationssysteme}, series = {Notation. Schnittstelle zwischen Komposition, Interpretation und Analyse. 19. Jahreskongress der Gesellschaft f{\"u}r Musiktheorie Z{\"u}rich 2019 (GMTH Proceedings 2019)}, booktitle = {Notation. Schnittstelle zwischen Komposition, Interpretation und Analyse. 19. Jahreskongress der Gesellschaft f{\"u}r Musiktheorie Z{\"u}rich 2019 (GMTH Proceedings 2019)}, publisher = {Gesellschaft f{\"u}r Musiktheorie (GMTH) e.V.}, doi = {10.31751/p.257}, pages = {69 -- 85}, year = {2023}, abstract = {Das Projekt semPart - Semantik der Partitur versucht, durch {\"U}bertragung von Methoden der Informatik auf die musikalische Notation exakte Aussagen {\"u}ber deren Semantik zu erzielen. Dies geschieht durch Remodellierung, also durch das Erstellen kleiner mathematischer Modelle, die jeweils das historisch-kulturell bestimmte Dekodieren von isolierten Parameter-Schichten eines Notates nachbilden. Erstes wichtiges Ergebnis ist, dass es in keinem Bereich jemals eine einzige ›richtige‹ Definition von Syntax und Semantik geben kann, sondern einen Katalog von vielf{\"a}ltigen theoretisch m{\"o}glichen und in der Praxis auch angetroffenen Varianten. Diese sind durch ihre Remodellierung exakt identifizier- und benennbar; ihre Gesamtheit bildet ein Raster, durch das Notationsstile und -werkzeuge beschreib- und vergleichbar werden. Dieses Raster und die Remodelle sind besonders politisch wichtig, zur F{\"o}rderung einer {\"o}ffentlichen Diskussion von Notationssystemen und ihren Eigenschaften, da zunehmend die Arbeitsweise von digitalen Werkzeugen die notationelle Praxis zu {\"u}berformen und zu filtrieren droht. The project semPart - Semantics of the Musical Score tries to clarify the semantics of musical notation by applying methods from informatics. This is done by remodelling, i. e., constructing small mathematical models that mimic the mentally and culturally determined processes taking place when decoding isolated parameters in musical notation. The first important result is that there can never be one single 'correct' definition of semantics in any area but rather a catalogue of many theoretically possible variants encountered in practice. Through their remodelling, these can be precisely identified and named; their totality constitutes a classification grid applicable to styles, corpora, single scores and digital tools such as editors or encoding standards. This grid and the remodels are of particular political importance in promoting a public discussion on notation systems and their characteristics, given that the increasing use of digital processing systems threatens to over-shape and narrow down notational practice.}, language = {de} } @inproceedings{RichterWrobel2023, author = {Richter, Nancy and Wrobel, Martin}, title = {The Impact of prototyping on the survival chances of digital early-stage startups: Findings and insights from explorative expert interviews}, series = {Proceedings of the 18th European Conference on Innovation and Entrepreneurship, ECIE 2023}, volume = {18}, booktitle = {Proceedings of the 18th European Conference on Innovation and Entrepreneurship, ECIE 2023}, number = {2}, publisher = {Academic Conferences International Limited}, doi = {10.34190/ecie.18.2.1714}, pages = {772 -- 779}, year = {2023}, abstract = {The products of digital entrepreneurs are highly innovative, and their business models contribute to the prosperity and further development of the economy and society. However, studies indicate that most of all startups fail, particularly during the early stages of their business journey Prototyping as part of Lean Startup or Business Model Testing approaches, can assist digital early-stage startups in navigating uncertainty and achieving successful product launches. However, these methods are applied very individually and there is little empirical research on best practices. We therefore conducted 65 explorative expert interviews and asked successful startups about their prototyping practices. Our results include learnings on the prototyping process and the testing format, the role of the founding team during prototyping practices, the customer focus and the role of networks. Our study adds important details to theory and practice of the innovation and prototyping processes of digital early-stage startups. Our results offer actionable advice and guidance to any current and potential entrepreneur, but especially to first-time founders and less experienced executives in early stage-startups. Additionally, our contribution enhances the theoretical understanding of the Lean Startup approach and prototyping practices.}, language = {en} } @inproceedings{SchepperBektas2023, author = {Schepper, Hannah and Bektas, Levent}, title = {Immersive Experience for Sustainable Tourism - The Potential of a Community-Based 3D Scanning Database App on the Example of South East Asia}, series = {2023 International Electronics Symposium (IES), Denpasar, Indonesia, 2023}, booktitle = {2023 International Electronics Symposium (IES), Denpasar, Indonesia, 2023}, publisher = {IEEE}, doi = {10.1109/IES59143.2023.10242549}, pages = {624 -- 630}, year = {2023}, abstract = {Sustainable tourism focuses on minimizing the negative impact of tourism on the environment and cultural heritage sites, allowing future generations to enjoy tourism. Immersive experiences can support sustainable tourism further by allowing people to visit tourist places without physically being there. This helps to reduce negative impacts such as overcrowding, pollution, and damage to natural and cultural resources. An app that encourages people to create 3D scans of places they visit has the potential to contribute to virtual tourism. With modern technology, a wider range of people can contribute to a community-based 3D scan collection by sharing their photos and scans. This app can help to gain a more comprehensive and accurate understanding of various locations around the world and create a variety of virtual tours. This paper specifically focuses on Southeast Asia and provides guidelines for creating content and material for the app.}, language = {en} } @inproceedings{BertramJankeFlassigetal.2025, author = {Bertram, Hamun and Janke, Christian and Flassig, Robert and Flassig, Peter}, title = {Efficient ML-Based Prediction of Turbomachinery Blade Performance With B-Spline Surface Representation}, 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 = {978-0-7918-8886-5}, doi = {10.1115/GT2025-152689}, pages = {13}, year = {2025}, abstract = {In turbomachinery blade design, rapid and accurate performance prediction is essential to accelerate optimization and reduce reliance on costly high-fidelity simulations. Traditional data-driven approaches often use dense surface point-cloud representations as input features, requiring extensive training datasets and computational resources. This work presents a more efficient methodology leveraging a compact B-Spline-based surface representation, where control points serve as input features, significantly reducing geometric dimensionality and computational overhead. A systematic Design of Experiments (DoE) is performed to generate a diverse set of blade geometries for NASA Rotor 67. Each design is evaluated via computational fluid dynamics (CFD) simulations in ANSYS CFX, providing key aerodynamic performance metrics such as isentropic efficiency. We train and compare Graph Convolutional Neural Networks (GCNN) and Random Forest Regression (RFR) models to predict blade performance directly from the reduced control-point parameterization. Incorporating first- and second-order geometric derivatives (gradients and Laplacians) into the feature set significantly enhances predictive accuracy and stability, capturing essential curvature-related flow physics. Results demonstrate that this B-Spline-based, CAD-centric methodology can achieve competitive accuracy in predictions with as few as 150-200 training simulations—comparable to other GCNN-based approaches. Consequently, the proposed framework reduces training overhead from days to minutes, enabling faster, more cost-effective turbomachinery design workflows and guiding optimization toward high-performing blade geometries.}, language = {en} } @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} } @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} } @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} } @inproceedings{WeichLobachev2025, author = {Weich, Patrick and Lobachev, Oleg}, title = {PIN-a-Boo: Revealing Smartphone PINs via Segmentation and Hand Skeleton Tracking from Video Feeds}, series = {WSCG 2025 Proceedings : Computer Science Research Notes - CSRN}, booktitle = {WSCG 2025 Proceedings : Computer Science Research Notes - CSRN}, publisher = {WSCG}, address = {Plzen}, issn = {464-4617}, doi = {10.24132/CSRN.2025-31}, pages = {293 -- 304}, year = {2025}, abstract = {It is crucial to improve smartphone security, given the prevalence of sensitive information stored on them. This study presents an attack strategy that reveals smartphone PIN entries using computer vision and pattern recognition techniques. By leveraging modern segmentation and hand skeleton tracking, our method accurately identifies and analyzes finger movement patterns, even when partially obscured. We can reliably infer the entered PIN by combining these movement patterns with the smartphone's position and the on-screen keypad layout. This approach significantly enhances shoulder-surfing attacks, requiring only a video recording of the entry process. Our attack requires much less specialized expertise, making it more accessible. We conclude by analyzing the method's potential impact and its implications for public safety.}, language = {en} } @inproceedings{LindauerDamusWinkeletal.2025, author = {Lindauer, Friederike and Damus, Martha and Winkel, Carmen and Frosch, Katharina}, title = {AI-Driven Communication Training for Cybersecurity with the Talk to Transform Simulator}, series = {KI-Forum 2025 : KI in Forschung und Lehre an Hochschulen}, booktitle = {KI-Forum 2025 : KI in Forschung und Lehre an Hochschulen}, publisher = {HsH Applied Academics}, doi = {10.25968/opus-3790}, pages = {8}, year = {2025}, abstract = {Effective communication skills are increasingly recognized as critical for leadership in digital transformation contexts. Recently, AI-Chatbots such as Talk to Transform (T2T) have been developed to enhance leadership competencies through interactive role-plays and feedback. This paper proposes their adaptation for cybersecurity training. We discuss the current landscape of cybersecurity training, highlight the importance of communication, and present T2T as an innovative approach to bridge this gap through chatbot-driven role-plays.}, language = {en} } @inproceedings{FitzTeutenbergVeldyaevaetal.2026, author = {Fitz, Lukas R. G. and Teutenberg, Lukas and Veldyaeva, Ekaterina and Scheeg, Jochen}, title = {Augmented Reality Solution Requirements for Human-Building Interactions: Lessons Learned from an Applied Science Project}, series = {Konferenz: 27th International Conference on Human-Computer Interaction, HCII 2025, Gothenburg, Sweden, June 22-27, 2025, Proceedings, Part III, HCI International 2025 - Late Breaking Papers}, booktitle = {Konferenz: 27th International Conference on Human-Computer Interaction, HCII 2025, Gothenburg, Sweden, June 22-27, 2025, Proceedings, Part III, HCI International 2025 - Late Breaking Papers}, edition = {1}, publisher = {Springer}, isbn = {978-3-032-12775-4}, doi = {10.1007/978-3-032-12773-0_21}, pages = {217 -- 225}, year = {2026}, abstract = {One popular application domain for Augmented Reality (AR) technology is facilitating human-building interactions (HBI). Such applications help users to retrieve and transact information through localized interaction points displayed on their (mobile) devices. Growing adoption of AR technology underlines the importance of incorporating suitable AR components for HBI, which is important for effective implementation and testing of HBI-AR use cases, increasing user satisfaction, and long-term viability. In this context, our short paper presents key experiences and lessons learned from an applied science project targeting the development and evaluation of an HBI-AR university campus app. Drawing on an ex-post inquiry of project collaborator experiences, we prescriptively highlight relevant AR solution requirements for this specific design context. Our findings amplify the importance of (1) balancing trade-offs between different spatial embedding computation methods, (2) modularity, customizability, and testability for efficient software development, and (3) taking building complexity and prototype maturity requirements into account when taking AR solution make-or-buy decisions. Our shared insights may inform future best practices and design principles for convergent HBI and AR projects in research and practice.}, language = {en} } @inproceedings{DaupayevReberBendyketal.2025, author = {Daupayev, Nursultan and Reber, Paul and Bendyk, Ricky and Engel, Christian and Hirsch, S{\"o}ren}, title = {Data Reduction for Energy-Constrained Sensors via Event-Aware Sampling}, series = {Konferenz: 2025 IEEE SENSORS, Vancouver, BC, Canada, 2025}, booktitle = {Konferenz: 2025 IEEE SENSORS, Vancouver, BC, Canada, 2025}, publisher = {IEEE}, isbn = {979-8-3315-4467-6}, issn = {2168-9229}, doi = {10.1109/SENSORS59705.2025.11330656}, pages = {1 -- 4}, year = {2025}, abstract = {Environmental monitoring plays a crucial role in analyzing environmental parameters and detecting anomalies. However, sensor systems work continuously, which results in constant energy consumption and data redundancy, especially for sensors with limited computing power and memory. In addition, installing and maintaining sensors in remote places creates additional challenges. An adaptive environmental sensing approach is developed to reduce data redundancy and energy consumption. A custom-designed sensor based on PIC16LF19156 microcontroller measures CO2, humidity and temperature simultaneously. The sensor is connected to a Raspberry Pi, where a signal processing algorithm is executed, aimed at reducing data redundancy, thereby increasing the energy efficiency of the system. The algorithm includes the discrete wavelet transform (DWT) to extract spectral features from the signals. A machine learning model trained on previous data estimates the daily variability of the signal and saves data labeled as SAVE (deviations) or SKIP (consistency). As a result, only the relevant intervals showing significant fluctuations are retained. The effectiveness of the proposed approach was evaluated by reconstructing the compressed signals and comparing them with the original data based on RMSE and MAE metrics, which confirms the insignificant loss of information.}, language = {en} } @inproceedings{QuernerEwerlingKindsmueller2025, author = {Querner, Erich and Ewerling, Philipp and Kindsm{\"u}ller, Martin Christof}, title = {Touch gets it done, tangibles make it fun? Balancing objective accuracy and user experience}, series = {Mensch und Computer 2025 - Workshopband : MCI-WS11: 18th Workshop "Be-greifbare Interaktion". Chemnitz. 31. August - 03. September 2025}, booktitle = {Mensch und Computer 2025 - Workshopband : MCI-WS11: 18th Workshop "Be-greifbare Interaktion". Chemnitz. 31. August - 03. September 2025}, publisher = {Gesellschaft f{\"u}r Informatik}, doi = {https://doi.org/10.18420/muc2025-mci-ws11-164}, pages = {1 -- 6}, year = {2025}, abstract = {This study compares Tangible User Interfaces (TUIs) with conventional touch interfaces (CTIs) on multi-touch tables for exploratory multi-user map applications. We developed a prototype that enables multiple users to interact with map content simultaneously and independently. Four interaction methods were implemented and evaluated: gesture-based touch control, widget-based touch joystick control, and two tangible interaction variants (a joystick and car-steering metaphor). A user study with 15 participants was conducted in which users navigated predefined routes with varying difficulty. We collected both objective performance measurements and subjective user assessments. While touch-based methods yielded higher accuracy in objective metrics, TUI-based interactions were rated significantly better by participants in terms of user experience. Notably, the car-steering tangible control was particularly well-received, highlighting how physical, playful interaction can enhance usability despite lower accuracy. These findings contribute to our understanding of how different interaction paradigms support collaborative exploration on multi-touch surfaces.}, language = {en} } @inproceedings{SimmeringPfeifferKindsmueller2025, author = {Simmering, Veronika and Pfeiffer, Thies and Kindsm{\"u}ller, Martin Christof}, title = {The Impact of Embodiment and Output Modality on Learning with Conversational Agents in VR}, series = {GI Workshop 2025 on Virtual and Augmented Reality : VR/AR 2025, Lecture Notes in Informatics (LNI), Gesellschaft f{\"u}r Informatik, Bonn 2025}, booktitle = {GI Workshop 2025 on Virtual and Augmented Reality : VR/AR 2025, Lecture Notes in Informatics (LNI), Gesellschaft f{\"u}r Informatik, Bonn 2025}, publisher = {Gesellschaft f{\"u}r Informatik}, issn = {2944-7682}, doi = {10.18420/vrar2025_12}, pages = {235 -- 254}, year = {2025}, abstract = {In Virtual Reality (VR) learning applications, the integration of pedagogical agents is particularly promising, as they function as a virtual social support. With the recent developments in Large Language Models (LLMs), conversational language models are now available that enable natural language interaction in a VR environment. We evaluated four possible designs for LLM-based agents (푛 = 21) in an aircraft-engine training. Focusing on the primary questions when bringing LLM-based agents into VR: whether to use text or speech and whether to embody the conversational agent in 3D or not. Pre- and post-tests were used to measure retention and questionnaires were used to measure the User Experience (UX) of different design variants. Contrary to our hypotheses, retention was higher when using a non-embodied design compared to an embodied design. The output modality did not have a significant impact on the learning success, but it did have an impact on the UX.}, language = {en} } @inproceedings{QuernerEwerlingKindsmueller2025, author = {Querner, Erich and Ewerling, Philipp and Kindsm{\"u}ller, Martin Christof}, title = {Setting the Stage for Collaboration: A Multi-View Table for Touch and Tangible Map Interaction}, series = {Mensch und Computer 2025 - Workshopband : MCI-WS11: 18th Workshop "Be-greifbare Interaktion". Chemnitz. 31. August - 03. September 2025}, booktitle = {Mensch und Computer 2025 - Workshopband : MCI-WS11: 18th Workshop "Be-greifbare Interaktion". Chemnitz. 31. August - 03. September 2025}, publisher = {Gesellschaft f{\"u}r Informatik}, doi = {10.18420/muc2025-mci-demo-318}, pages = {1 -- 4}, year = {2025}, abstract = {We present a multi-user map application based on a novel multiview concept that enables simultaneous and independent interaction with shared geospatial content. Each user operates a personal View Finder and Focus View, color-coded for clarity, while a shared, immutable Context View provides a common reference frame. The system supports both touch-based and tangible interaction techniques, including gesture control, virtual joysticks, and physical objects. Users can flexibly arrange their workspaces on a multi-touch table, supporting both individual exploration and collaborative tasks.}, language = {de} }