@misc{DasChaurasiaMandaletal.2023, author = {Das, Atanu and Chaurasia, Prashtan Kumar and Mandal, Gopi K. and Goecke, Sven-Frithjof and De, Amitava}, title = {Sample calculations to estimate joint distortion based on the published article "Analytical Estimation of Thermomechanical Distortion and Interface Layer Thickness for Gas Metal Arc Lap Joining of Dissimilar Sheets"}, year = {2023}, abstract = {A sample set of calculations is presented in this supplemental document to analytically estimate joint distortion for gas metal arc lap joining of aluminum and steel thin sheets following the published article "Analytical Estimation of Thermomechanical Distortion and Interface Layer Thickness for Gas Metal Arc Lap Joining of Dissimilar Sheets"}, language = {en} } @article{DasChaurasiaMandaletal.2023, author = {Das, Atanu and Chaurasia, Prashtan Kumar and Mandal, Gopi K. and Goecke, Sven-Frithjof and De, Amitava}, title = {Analytical estimation of thermomechanical distortion and interface layer thickness for gas metal arc lap joining of dissimilar sheets}, series = {Welding in the World}, journal = {Welding in the World}, number = {76/2023}, publisher = {Springer Link}, issn = {432288}, doi = {10.1007/s40194-01426-x}, pages = {33 -- 49}, year = {2023}, language = {en} } @article{KuznetsovFroripSuenteretal.2023, author = {Kuznetsov, Arthur and Frorip, Aleksandr and S{\"u}nter, Alar and Kasvand, Nensi and Korsakov, Vadim and Konoplev, Georgii and Stepanova, Oksana and Rusalepp, Linda and Anton, Dea and P{\"u}ssa, T{\~o}nu and Roasto, Mati and Abramova, Liubov and Kozin, Andrey and Toom, Lauri and Hirsch, S{\"o}ren and Mukhin, Nikolay}, title = {Fast Protein and Metabolites (Nucleotides and Nucleosides) Liquid Chromatography Technique and Chemical Sensor for the Assessment of Fish and Meat Freshness}, series = {Chemosensors}, journal = {Chemosensors}, number = {1/2023 / Band 11}, editor = {mdpi,}, publisher = {MDPI}, issn = {2227-9040}, doi = {10.3390/chemosensors11010069}, pages = {69}, year = {2023}, abstract = {Fast protein and metabolite liquid chromatography (FPLMC) was introduced years ago to enable the easy separation of high-molecular compounds such as proteins from small molecules and the identification of the low-molecular substances. In this paper, the method is applied for the rapid evaluation of freshness and monitoring the aging of animal meat and fish. A novel chromatographic sensor was developed with a deep UV LED-based photometric detection unit (255-265 nm), an original flow cuvette and registration scheme; the processing of a chromatogram with the sensor takes approximately 15 min. Strict isochronism between the elution of ATP metabolites, mainly hypoxanthine (Hx) and inosine monophosphate (IMP), and the time of maturation of meat or fish, was discovered. A new freshness index H* = [Hx]/[IMP] was introduced, which is proportional to the instrumental delay time in the FPMLC chromatograms: the H* index < 0.5 indicates the presence of inosine monophosphate (IMP) and the high quality of the meat or fish. Reasonably strong correlations were revealed between data obtained by FPMLC and total volatile basic nitrogen TVB-N (for fish) or volatile fatty acids VFA (for meat) content. Moreover, putative nucleotide salvage and an increase in the concentration of IMP were observed in fish after heat treatment using the FPMLC sensor and NMR technique.}, language = {en} } @unpublished{WendzelCaviglioneMazurczyketal.2023, author = {Wendzel, Steffen and Caviglione, Luca and Mazurczyk, Wojciech and Mileva, Aleksandra and Dittmann, Jana and Kr{\"a}tzer, Christian and Lamsh{\"o}ft, Kevin and Vielhauer, Claus and Hartmann, Laura and Keller, J{\"o}rg and Neubert, Tom and Zillien, Sebastian}, title = {A Generic Taxonomy for Steganography Methods}, doi = {10.36227/techrxiv.20215373.v1}, year = {2023}, abstract = {A unified understanding of terms and their applicability is essential for every scientific discipline: steganography is no exception. Being divided into several domains (for instance, text steganography, digital media steganography, and network steganography), it is crucial to provide a unified terminology as well as a taxonomy that is not limited to some specific applications or areas. A prime attempt towards a unified understanding of terms was conducted in 2015 with the introduction of a pattern-based taxonomy for network steganography. Six years later, in 2021, the first work towards a pattern-based taxonomy for steganography was proposed. However, this initial attempt still faced several shortcomings, e.g., the lack of patterns for several steganography domains (the work mainly focused on network steganography and covert channels), various terminology issues, and the need of providing a tutorial on how the taxonomy can be used during engineering and scientific tasks, including the paper-writing process.
As the consortium who published this initial 2021-study on steganography patterns, in this paper we present the first comprehensive pattern-based taxonomy tailored to fit all known domains of steganography, including smaller and emerging areas, such as filesystem steganography and cyber-physical systems steganography. Besides, to make our contribution more effective and promote the use of the taxonomy to advance research on steganography, we also provide a thorough tutorial on its utilization.
Our pattern collection is available at https://patterns.ztt.hs-worms.de.
}, language = {en} } @incollection{LevinaMattern2023, author = {Levina, Olga and Mattern, Saskia}, title = {Ethical and Legal Analysis of Machine Learning Based Systems: A Scenario Analysis of a Food Recommender System}, series = {Recommender Systems: Legal and Ethical Issues}, booktitle = {Recommender Systems: Legal and Ethical Issues}, isbn = {978-3-031-34806-8}, doi = {10.1007/978-3-031-34804-4_9}, pages = {165 -- 185}, year = {2023}, abstract = {Laws are the reflection of the ethical and moral principles of the society. While the use of technology influences users' behavior in a pace that is affected by the technology introduction to the market, legal activities can be driven by the society as the results of such interactions. This scenario analysis- based research focuses on a classic but fictional food recommender system and the ethical issues that might occur from its usage. The recommender system is taken here as an example of machine learning-based systems (MLS) that can often be found in the individual, business and administrative applications. The research compares the existing legal solutions, with the focus on the GDPR legislation, and the discovered ethical issues. The ethical analysis is led along the ALTAI principles suggested by the European Commission, the common good approach as well as the general principles constituted in human rights. While the GDPR-based analysis showed that this data- and privacy-based legislation addressed most of the identified ethical issues, questions related to the common good approach in the context of environment and mobility that arise due to the wide spectrum of the MLS usage require further legal discussion. The application of the two approaches shows that conducting the ethical and legal analysis is beneficial for both the designers of such MLS as well as the legal actors. The findings can enhance the design and functions of a user-facing MLS as well as influence or validate legal activities.}, language = {en} } @inproceedings{Levina2023, author = {Levina, Olga}, title = {Operationalizing Ethics for Information Systems Design - A Tool for Ethical Software}, series = {Konferenz: Twenty-ninth Americas Conference on Information Systems (AMCIS), Panama, 2023}, booktitle = {Konferenz: Twenty-ninth Americas Conference on Information Systems (AMCIS), Panama, 2023}, pages = {4}, year = {2023}, abstract = {Propagation of information technology in the increasingly diverse domains, raises question concerning moral implications. While the number of ethical principles in the IT design is growing, they do not necessarily apply to specific products, which means developers and e.g. purchasing agent need to contextualize them for each specific IT product. This paper describes an actionable artifact that allows assessment of ethical non-functional requirements of an information system through operationalization of ethical values, Ethical Software Assessment Tool (ESAT). It is based on a survey of values that are currently considered in research and practice as well as in legal initiatives in IT context. The ethical approach and principles operationalized in ESAT are presented and discussed.}, language = {en} } @article{NagelSchminderMieke2023, author = {Nagel, Michael and Schminder, Christian and Mieke, Christian}, title = {Sachbezogenes Verhandeln als Methode im Zielbildungsprozess von innovationsorientierten Public Private Partnerships.}, series = {Ideen- und Innovationsmanagement}, journal = {Ideen- und Innovationsmanagement}, number = {2}, editor = {Erich Schmidt Verlag,}, publisher = {Erich Schmidt Verlag GmbH \& Co}, issn = {2198-3151}, doi = {10.37307/j.2198-3151.2022.02.07}, pages = {72 -- 77}, year = {2023}, language = {de} } @misc{WeberSteinPilgermannetal.2023, author = {Weber, Simon and Stein, Stefan and Pilgermann, Michael and Schrader, Thomas}, title = {Attack Detection for Medical Cyber- Physical Systems - The Visualization}, doi = {10.25933/opus4-2914}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-29142}, year = {2023}, abstract = {Attack Detection for Medical Cyber-Physical Systems - The Visualization}, language = {en} } @techreport{MaurerJohannsenPochanke2023, author = {Maurer, Robert and Johannsen, Andreas and Pochanke, Oliver}, title = {Analyse der Trends und Alternativen zur Online-Pr{\"a}senz als Kommunikationskanal von kleinen und mittleren Unternehmen durch den Einsatz von Plattformen}, series = {Schriften des Instituts f{\"u}r Betriebliche Integration und Digitalisierung (IBID)}, volume = {11}, journal = {Schriften des Instituts f{\"u}r Betriebliche Integration und Digitalisierung (IBID)}, publisher = {Technische Hochschule Brandenburg}, address = {Brandenburg an der Havel}, issn = {2198-090X}, doi = {10.25933/opus4-2885}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-28853}, pages = {VI, 25 Seiten}, year = {2023}, abstract = {Die Digitalisierung ist eine der Herausforderungen der heutigen Zeit. Einhergehend mit der Zunahme der Nutzung des Internets in vielen Lebensbereichen steigt auch die Wichtigkeit f{\"u}r Unternehmen, einen repr{\"a}sentativen Auftritt zu etablieren. F{\"u}r kleine und mittlere Unternehmen bedeutet das Betreiben und Pflegen einer Onlinepr{\"a}senz oftmals einen hohen finanziellen und zeitlichen Aufwand. Ziel des vorliegenden Arbeitspapiers ist es, kleinen und mittleren Unternehmen eine Alternative zu herk{\"o}mmlichen Content Management Systemen darzulegen und sie bei der Entscheidungsfindung zu unterst{\"u}tzen. Zur Beantwortung der Forschungsfragen wurde der methodische Ansatz einer Literatur- und Internetrecherche verwendet. Aus der Analyse konnten drei Online Business Plattformen identifiziert, sowie deren Vor- und Nachteile gegen{\"u}ber Content Management Systemen dargestellt werden. Anschließend wurden Kriterien definiert und Empfehlungen dargelegt, welche kleine und mittlere Unternehmen im Entscheidungsprozess unterst{\"u}tzen sollen. Letztlich wurden die Einrichtung sowie die wichtigsten Funktionen einer Plattform dargestellt. Die Ergebnisse zeigen, dass die Nutzung einer Onlineplattform f{\"u}r lokal begrenze Unternehmen mit geringen Anforderungen an die Funktionalit{\"a}t und hoher Kostensensibilit{\"a}t eine sinnvolle Alternative ist. Abschließend wurde anhand des realen Fallbeispiels „Google My Business" (seit 2022: „Google Business Profile") auf die Funktionen sowie Vorteile und M{\"o}glichkeiten einer solchen Plattform eingegangen.}, subject = {Online-Marketing}, language = {de} } @misc{StockhausenJohannsenMaurer2023, author = {Stockhausen, Pablo and Johannsen, Andreas and Maurer, Robert}, title = {Machine-Learning Verfahren f{\"u}r eine nachhaltige Letzte-Meile-Logistik}, year = {2023}, abstract = {Dieser Beitrag entwickelt ein Konzept zur praktischen Umsetzung eines Machine- Learning Verfahrens zum L{\"o}sen von Vehicle Routing Problemen im Kontext einer nachhaltigen "Letzte-Meile"-Logistik, welches durch einen Prototyp umgesetzt und getestet wurde. Der Prototyp basiert auf dem "Reinforcement Learning"-System und verwendet als Algorithmus "REINFORCE mit Baseline". In einer Vergleichsanalyse wurde der Prototyp mit dem bekannten Vertreter Google-OR, anhand von zwei Anwendungsszenarien, verglichen. Der Prototyp {\"u}berzeugt dabei in der Laufzeit und dem Automatismus. Es konnte festgestellt werden, dass eine Verwendung von Lernenden-Systemen f{\"u}r das Vehicle Routing Problem sich bei nur bei einem gr{\"o}ßeren Stoppvolumen und einer erweiterten IT-Infrastruktur empfiehlt.}, language = {de} } @article{Johannsen2023, author = {Johannsen, Andreas}, title = {ERP-Einf{\"u}hrung - Bewertung einer Standardimplementierungsmethode f{\"u}r SAP Business One}, series = {ERP Management}, journal = {ERP Management}, publisher = {GITO Verlag}, issn = {1860-6725}, pages = {19 -- 22}, year = {2023}, language = {de} } @inproceedings{Frosch2023, author = {Frosch, Katharina}, title = {Scan to Learn: A Lightweight Approach for Informal Mobile Micro-Learning at the Workplace}, series = {Konferenz: IARIA The Fifteenth International Conference on Mobile, Hybrid, and On-line Learning; Venice (Italy)}, booktitle = {Konferenz: IARIA The Fifteenth International Conference on Mobile, Hybrid, and On-line Learning; Venice (Italy)}, publisher = {IARIA}, isbn = {978-1-68558-081-0}, pages = {53 -- 61}, year = {2023}, abstract = {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.}, language = {en} } @article{StannariusHarth2023, author = {Stannarius, Ralf and Harth, Kirsten}, title = {The structure of disintegrating defect clusters in smectic C freely suspended films}, series = {Soft Matter}, journal = {Soft Matter}, number = {19}, publisher = {Royal Society of Chemistry}, doi = {https://doi.org/10.1039/d3sm00808h}, pages = {6109 -- 6115}, year = {2023}, abstract = {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.}, language = {en} } @article{KloppTrittelHarthetal.2023, author = {Klopp, Christoph and Trittel, Torsten and Harth, Kirsten and Stannarius, Ralf}, title = {Coalescence of biphasic droplets embedded in free standing smectic A films}, series = {Soft Matter}, volume = {20}, journal = {Soft Matter}, number = {5}, publisher = {Royal Society of Chemistry}, issn = {1744-683X}, doi = {10.1039/d3sm01549a}, pages = {1036 -- 1046}, year = {2023}, abstract = {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.}, language = {en} } @inproceedings{StockhausenJohannsenMaurer2023, author = {Stockhausen, Pablo and Johannsen, Andreas and Maurer, Robert}, title = {Konzeption eines Machine-Learnings-Verfahrens zum L{\"o}sen von Green Vehicle Routing Problemen}, series = {Konferenz: Informatik 2022, Lecture Notes in Informatics (LNI), Bonn, 2022/ Konferenzband: Informatik 2022 Fachtagung vom 26.-30. September 2022, Hamburg/ Band: P-326}, booktitle = {Konferenz: Informatik 2022, Lecture Notes in Informatics (LNI), Bonn, 2022/ Konferenzband: Informatik 2022 Fachtagung vom 26.-30. September 2022, Hamburg/ Band: P-326}, editor = {Krupka, Daniel and Federrath, Hannes and Demmler, Daniel}, publisher = {Gesellschaft f{\"u}r Informatik}, address = {Bonn}, isbn = {978-3-88579-720-3}, doi = {10.18420/inf2022_75}, pages = {885 -- 897}, year = {2023}, language = {de} } @inproceedings{FitzVeldyaevaTeutenbergetal.2023, author = {Fitz, Lukas R. G. and Veldyaeva, Ekaterina and Teutenberg, Lukas and Scheeg, Michaela and Scheeg, Jochen}, title = {Puzzle away the Puzzledness: Action-Design Study of an Educational Escape Room for Intervention in SMEs' Perception towards ICT Adoption}, series = {Konferenz: 57th Hawaii International Conference on System Sciences (HICSS); Honolulu, HI, USA}, booktitle = {Konferenz: 57th Hawaii International Conference on System Sciences (HICSS); Honolulu, HI, USA}, isbn = {978-0-9981331-7-1}, doi = {10.24251/HICSS.2024.642}, pages = {5347 -- 5356}, year = {2023}, abstract = {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.}, language = {en} } @inproceedings{FitzScheeg2023, author = {Fitz, Lukas R. G. and Scheeg, Jochen}, title = {What is Digital about Digital Innovation? An Ontological Discussion of Digitality}, series = {Konferenz: 29th Americas Conference on Information Systems}, booktitle = {Konferenz: 29th Americas Conference on Information Systems}, publisher = {Panama City, Panama}, year = {2023}, abstract = {"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.}, language = {en} } @inproceedings{VeldyaevaFitzScheeg2023, author = {Veldyaeva, Ekaterina and Fitz, Lukas R. G. and Scheeg, Jochen}, title = {Developing Digital Competencies in Small and Medium-Sized Enterprises Through Microlearning Applications: A Research Agenda}, series = {Konferenz: Perspectives in Business Informatics Research 22nd International Conference on Business Informatics Research, BIR 2023, Ascoli Piceno, Italy, September 13-15, 2023, Proceedings}, booktitle = {Konferenz: Perspectives in Business Informatics Research 22nd International Conference on Business Informatics Research, BIR 2023, Ascoli Piceno, Italy, September 13-15, 2023, Proceedings}, doi = {10.1007/978-3-031-43126-5_7}, pages = {41 -- 58}, year = {2023}, abstract = {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.}, language = {en} } @incollection{FitzScheeg2023, author = {Fitz, Lukas R. G. and Scheeg, Jochen}, title = {Small Businesses Participating in Digital Platform Ecosystems - A Descriptive Literature Review}, series = {Digital Transformation. PLAIS EuroSymposium 2023. Lecture Notes in Business Information Processing}, booktitle = {Digital Transformation. PLAIS EuroSymposium 2023. Lecture Notes in Business Information Processing}, doi = {10.1007/978-3-031-43590-4_3}, year = {2023}, abstract = {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.}, language = {en} } @article{WeberSteinPilgermannetal.2023, author = {Weber, Simon B. and Stein, Stefan and Pilgermann, Michael and Schrader, Thomas}, title = {Attack Detection for Medical Cyber-Physical Systems - A Systematic Literature Review}, series = {IEEE Access}, journal = {IEEE Access}, number = {11}, publisher = {IEEE}, doi = {10.1109/ACCESS.2023.3270225}, pages = {41796 -- 41815}, year = {2023}, abstract = {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.}, language = {en} } @unpublished{Nitze2023, author = {Nitze, Andr{\´e}}, title = {Future-proofing Education: A Prototype for Simulating Oral Examinations Using Large Language Models}, publisher = {arXiv}, doi = {10.48550/arXiv.2401.06160}, pages = {1 -- 6}, year = {2023}, abstract = {This study explores the impact of Large Language Models (LLMs) in higher education, focusing on an automated oral examination simulation using a prototype. The design considerations of the prototype are described, and the system is evaluated with a select group of educators and students. Technical and pedagogical observations are discussed. The prototype proved to be effective in simulating oral exams, providing personalized feedback, and streamlining educators' workloads. The promising results of the prototype show the potential for LLMs in democratizing education, inclusion of diverse student populations, and improvement of teaching quality and efficiency.}, 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} } @techreport{HaaseMertzenMusolffetal.2023, author = {Haase, Claudia and Mertzen, Daniela and Musolff, Myriam and Panitz, Michael and Schiller, Carina and Schreiber, Stefanie and Spiecker, Claus and Wolff, Ian}, title = {IN-FDM-BB Werkstattbericht: W 1.2.2 Auswertung Bedarfserhebung mit daraus folgenden Aktivit{\"a}ten}, publisher = {Zenodo}, doi = {10.5281/zenodo.10408198}, pages = {385}, year = {2023}, abstract = {Forschungsdatenmanagement (FDM) gewinnt an den Hochschulen in Brandenburg eine immer gr{\"o}ßere Bedeutung. F{\"u}r den Aufbau und die Institutionalisierung eines nachhaltigen FDM an den brandenburgischen Hochschulen ist eine m{\"o}glichst genaue Ermittlung des aktuellen Kenntnisstandes der Forschenden und deren Bedarfe bez{\"u}glich des Umgangs mit Forschungsdaten erforderlich. Hierzu diente die Bedarfserhebung, die im Rahmen des vom BMBF und dem MWFK gef{\"o}rderten Projekts IN-FDM-BB durchgef{\"u}hrt wurde. Beteiligt an der brandenburgweiten Umfrage waren alle acht staatlichen forschenden Hochschulen: vier Universit{\"a}ten (die Brandenburgische Technische Universit{\"a}t Cottbus - Senftenberg (BTU), die Filmuniversit{\"a}t Babelsberg KONRAD WOLF (FB), die Europa-Universit{\"a}t Viadrina Frankfurt (Oder) (EUV) und die Universit{\"a}t Potsdam (UP)) und vier Hochschulen f{\"u}r Angewandte Wissenschaften (die Fachhochschule Potsdam (FHP), die Hochschule f{\"u}r nachhaltige Entwicklung Eberswalde (HNEE), die Technische Hochschule Brandenburg (THB) und die Technische Hochschule Wildau (THW)). Die Hochschulen unterscheiden sich erheblich in ihrer Gr{\"o}ße und fachlichen Ausrichtung. So hat die UP deutlich {\"u}ber 20.000 Studierende und {\"u}ber 1.900 Professor*innen und akademische Mitarbeiter*innen, die FB hingegen, weniger als 1.000 Studierende und ca. 140 Professor*innen und akademische Mitarbeiter*innen. Landesweit sind fast alle Fachdisziplinen vertreten, jedoch mit unterschiedlichen Schwerpunkten je Hochschule. Das Ziel der Bedarfserhebung war, den Kenntnisstand bez{\"u}glich des professionellen Umgangs mit Forschungsdaten der Forschenden an den einzelnen Hochschulen zu ermitteln, FDM-Bedarfe zu erkennen und daraus m{\"o}gliche FDM-Aktivit{\"a}ten f{\"u}r die jeweilige Hochschule abzuleiten. Die Bedarfserhebung richtete sich daher in erster Linie an die Forschenden der jeweiligen Hochschule.}, 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} } @techreport{vonFranseckyHaaseHeinrichetal.2023, author = {von Fransecky, Tanja and Haase, Claudia and Heinrich, Marcus and Jacob, Boris and Musolff, Myriam and Panitz, Michael and Spiecker, Claus and Wolff, Ian}, title = {IN-FDM-BB Werkstattbericht: W 1.1.1 Konzepte f{\"u}r Informationsmaterialien und FDM-Webseite}, publisher = {Zenodo}, doi = {10.5281/ZENODO.8069814}, pages = {50}, year = {2023}, abstract = {Forschungsdatenmanagement gewinnt immer gr{\"o}ßere Bedeutung in der Forschung. Daher arbeiten im Projekt IN-FDM-BB acht Hochschulen an der Institutionalisierung und nachhaltigen Verstetigung von Forschungsdatenmanagement (FDM) in Brandenburg. Im Rahmen des lokalen Kompetenzaufbaus und der Institutionalisierung von FDM im Projekt geht es im Arbeitspaket AP 1 u. a. um „Entwicklung von hochschulspezifischen Informationsmaterialien (z. B. Flyer, FDM-Leitf{\"a}den, FAQs)" und „Aufbau und/oder Aktualisierung einer lokalen FDM-Webseite". Der Werkstattbericht Konzept f{\"u}r Informationsmaterialien und FDM-Webseite (W 1.1.1) ist der erste Bericht, den alle acht am Projekt IN-FDM-BB beteiligen Hochschulen vorlegen und der konkret die lokale Institutionalisierung von FDM an den Einrichtungen behandelt.}, language = {de} } @article{BraubachJander2023, author = {Braubach, Lars and Jander, Kai}, title = {1. Introduction}, series = {International Journal of Parallel, Emergent and Distributed Systems}, volume = {38}, journal = {International Journal of Parallel, Emergent and Distributed Systems}, number = {6}, publisher = {Taylor \& Francis}, issn = {1744-5779}, doi = {10.1080/17445760.2023.2251386}, pages = {459 -- 460}, year = {2023}, language = {en} } @article{VegaJechowJamesAetal.2023, author = {Vega, Catherine Perez and Jechow, Andreas and James A., Campbell and Zielinska-Dabkowska, Karolina M. and Hoelker, Franz}, title = {Light pollution from illuminated bridges as a potential barrier for migrating fish-Linking measurements with a proposal for a conceptual model}, series = {Basic and Applied Ecology}, volume = {74}, journal = {Basic and Applied Ecology}, publisher = {Elsevier}, issn = {1618-0089}, doi = {10.1016/j.baae.2023.11.001}, pages = {1 -- 12}, year = {2023}, abstract = {Illuminated bridges have become important assets to navigable aquatic systems. However, if artificial light at night (ALAN) from illuminated bridges reaches aquatic habitats, such as rivers, it can threaten the river's natural heterogeneity and alter the behavioural responses of migratory fish. Here, via a pilot study, we quantified levels of ALAN at illuminated bridges that cross a river and, propose a conceptual model to estimate its potential implications on two migrating fish species with contrasting life histories. Night-time light measurements on the river Spree in Berlin were performed continuously along a transect and in detail at seven illuminated bridges. Photometric data of the pilot study showed rapidly increased and decreased light levels at several illuminated bridges from which we derived several model illumination scenarios. These illumination scenarios and their potential effect on migrating Atlantic salmon smolts (Salmo salar) and European silver eel (Anguilla anguilla) are presented as a conceptual model, considering illuminated bridges as behavioural barriers to fish migration. ALAN's adverse effects on freshwater habitats must be better researched, understood, managed, and properly communicated to develop future sustainable lighting practices and policies that preserve riverscapes and their biodiversity.}, language = {en} } @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{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{ChaurasiaGoeckeDe2023, author = {Chaurasia, Prashtan Kumar and Goecke, Sven-Frithjof and De, Amitava}, title = {Monitoring melt pool asymmetry in gas metal arc-directed energy deposition}, series = {Science and Technology of Welding and Joining}, journal = {Science and Technology of Welding and Joining}, number = {Augabe 5/ Band 28}, publisher = {Taylor \& Francis}, issn = {1362-1718 (PRINT)}, doi = {10.1080/13621718.2023.2168933}, pages = {424 -- 432}, year = {2023}, language = {en} } @article{Guterding2023, author = {Guterding, Daniel}, title = {Sparse Modeling Approach to the Arbitrage-Free Interpolation of Plain-Vanilla Option Prices and Implied Volatilities}, series = {Risks}, journal = {Risks}, number = {11 (5)}, publisher = {MDPI}, doi = {https://doi.org/10.3390/risks11050083}, pages = {24}, year = {2023}, abstract = {We present a method for the arbitrage-free interpolation of plain-vanilla option prices and implied volatilities, which is based on a system of integral equations that relates terminal density and option prices. Using a discretization of the terminal density, we write these integral equations as a system of linear equations. We show that the kernel matrix of this system is, in general, ill-conditioned, so that it cannot be solved for the discretized density using a naive approach. Instead, we construct a sparse model for the kernel matrix using singular value decomposition (SVD), which allows us not only to systematically improve the condition number of the kernel matrix, but also determines the computational effort and accuracy of our method. In order to allow for the treatment of realistic inputs that may contain arbitrage, we reformulate the system of linear equations as an optimization problem, in which the SVD-transformed density minimizes the error between the input prices and the arbitrage-free prices generated by our method. To further stabilize the method in the presence of noisy input prices or arbitrage, we apply an 𝐿1-regularization to the SVD-transformed density. Our approach, which is inspired by recent progress in theoretical physics, offers a flexible and efficient framework for the arbitrage-free interpolation of plain-vanilla option prices and implied volatilities, without the need to explicitly specify a stochastic process, expansion basis functions or any other kind of model. We demonstrate the capabilities of our method in a number of artificial and realistic test cases.}, language = {en} } @masterthesis{Schwabe2024, type = {Bachelor Thesis}, author = {Schwabe, Carina}, title = {Derivation of a technical representation of the MITRE ATT\&CK matrix and further analyses of the kill chain}, publisher = {Technische Hochschule Brandenburg}, address = {Brandenburg an der Havel}, doi = {10.25933/10.25933/opus4-3215}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-32152}, school = {Technische Hochschule Brandenburg}, pages = {46}, year = {2024}, abstract = {In modern societies, technology has a high value, as nearly all systems are controlled by information technology. This thesis aims to develop a technical representation of the MITRE ATT\&CK matrix to enable faster and more effective responses to cyber attacks. Based on a analysis of common cyber attack models, such as the Diamnond Model of Intrusion Analysis and the Lockheed Martin Cyber Kill Chain, the MITRE ATT\&CK matrix is used to develop an extended Kill Chain model. In this new model, MITRE tactics are grouped into five sequential attack phases, allowing for a clearer differentiation between actions taken during an attack. Aditionally, one ongoing group of MITRE tactics was identified. Building on this model, two graph-based representations are developed: a simple graph structure and a hierarchical, tree-shaped graph of MITRE tactics and techniques. The following discussion addresses the practical application of the new model, as well as potential further developments, such as integrating AI to analyse and predict existing and potential attack patterns.}, subject = {Computersicherheit}, language = {en} } @masterthesis{Reinhardt2024, type = {Bachelor Thesis}, author = {Reinhardt, Janek Simon}, title = {Untersuchung der Realisierbarkeit von Heartbeat-Monitoring in Wazuh}, publisher = {Technische Hochschule Brandenburg}, address = {Brandenburg an der Havel}, doi = {10.25933/opus4-3220}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-32204}, school = {Fachhochschule Brandenburg}, pages = {99}, year = {2024}, abstract = {Der Stellenwert der {\"U}berwachung der Sicherheit von IT-Systemen nimmt mit dem Voranschreiten der Digitalisierung immer weiter zu. Um diese Aufgabe zu vereinfachen werden Monitoring-Systeme eingesetzt. Diese sammeln und verarbeiten Daten, um den Status des IT-Systems zu ermitteln. Zu diesen Monitoring-Systemen z{\"a}hlt Wazuh, welches in der Lage ist, die "Integrit{\"a}t" und "Vertraulichkeit" unter Zuhilfenahme von Agenten zu {\"u}berwachen. Damit deckt Wazuh lediglich zwei der drei Schutzziele der IT-Sicherheit ab. Aus diesem Grund wird in dieser Bachelorarbeit untersucht, auf welche Art und Weise sich das SIEM und XDR System um Heartbeat Monitoring erweitern l{\"a}sst. Dadurch wird Wazuh bef{\"a}higt das dritte Schutzziel der IT-Sicherheit, die Verf{\"u}gbarkeit, zu {\"u}berwachen. Zu diesem Zweck wird eine Erweiterung der Wazuh-Implementierung um den Heartbeat Daemon des Elastic Stacks durchgef{\"u}hrt. Die Implementierung soll in der Lage sein, die Daten des Heartbeat Daemons zu empfangen, zu speichern, darzustellen und Benachrichtigungen auszul{\"o}sen, sobald sich der Status von {\"u}berwachten Systemkomponenten {\"a}ndert. Um die Funktionalit{\"a}t dieses Proof of Concepts zu {\"u}berpr{\"u}fen wird Heartbeat Monitoring ebenfalls in einem Vergleichssystem umgesetzt. Dabei handelt es sich um die native Umgebung des Daemons, den Elastic Stack. Die Funktionalit{\"a}t des Elastic Stacks konnte auf unterschiedlichen Wegen reproduziert werden. Dies erfolgt zum einen durch die direkte Verarbeitung der Heartbeat-Ausgabe durch Wazuh. Alternativ besteht die M{\"o}glichkeit, die Heartbeat-Daten direkt in Wazuhs Datenbank zu schreiben. In Abh{\"a}ngigkeit der Version des Heartbeat-Daemons ist die Verwendung von Logstash als Middleware erforderlich. Das Darstellen der Daten ist f{\"u}r beide Methoden in Wazuhs Weboberfl{\"a}che m{\"o}glich. Das Erweitern von Wazuh um Heartbeat Monitoring erm{\"o}glicht der Software die Abdeckung der relevantesten Schutzziele der IT-Sicherheit. Es wird gezeigt, welche Methoden zur Erweiterung der Open-Source-Software angewendet werden k{\"o}nnen.}, subject = {Computersicherheit}, language = {de} } @inproceedings{GiskeBankwitzEngeletal.2024, author = {Giske, Karl and Bankwitz, Madeleine and Engel, Christian and Bendyk, Ricky and Hirsch, Soeren}, title = {Advanced Sensor Systems for Sustainable Building Modernization: A Technological Approach to Enhance CO2 Savings}, series = {EUROSENSORS XXXVI, Debrecen, Hungary, 2024}, booktitle = {EUROSENSORS XXXVI, Debrecen, Hungary, 2024}, isbn = {978-3-910600-03-4}, doi = {10.5162/EUROSENSORSXXXVI/OT10.184}, pages = {216 -- 217}, year = {2024}, abstract = {This work presents an advanced sensor system design developed to improve diagnostic methods for sustainable building renovation, with focus on the optimization of energy efficiency and the achievement of significant CO2 reduction in the construction sector. Introduction Considering the challenges posed by climate change, it is imperative to adopt innovative strategies in all sectors, with particular focus on construction and real estate, which are well-known contributors to energy consumption and CO2 emissions. Sustainable renovation represents a pivotal approach for enhancing energy efficiency , reducing energy demand and improving environmental footprints through precise resource management and energy-efficient construction practices [1].}, language = {en} } @masterthesis{Ferneding2024, type = {Bachelor Thesis}, author = {Ferneding, Conrad}, title = {Analysis of Vulnerability CVE-2024-3094 in XZ Utils: Precedent Supply Chain Attack and Incident Analysis}, publisher = {Technische Hochschule Brandenburg}, address = {Brandenburg an der Havel}, doi = {10.25933/opus4-3227}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-32278}, school = {Technische Hochschule Brandenburg}, year = {2024}, abstract = {This thesis falls within the domain of cybersecurity and computer science, specifically focusing on the vulnerability CVE-2024-3094, which has a CVSS score of 10, discovered in late March of 2024. It integrates methodologies from network security, reverse engineering, and OSINT to thoroughly investigate this vulnerability. An aspect of this thesis will be the exploration of the incident and its social engineering campaign that led to a threat actor becoming a maintainer of XZ Utils. Another part of this work will be the analysis of how the vulnerability in XZ Utils affects SSH and whether SSH authentication is compromised by this vulnerability. The objective is to conduct a Proof of Concept (PoC) to demonstrate the presence of the backdoor.}, subject = {Computersicherheit}, language = {en} } @masterthesis{Allwardt2024, type = {Bachelor Thesis}, author = {Allwardt, Arne}, title = {Analyse von Machine-Learning-Methoden zur synthetischen Erzeugung von Zeitreihen}, doi = {10.25933/opus4-3201}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-32017}, school = {Technische Hochschule Brandenburg}, pages = {74}, year = {2024}, abstract = {In der Dom{\"a}ne der Zeitreihen besteht ein Mangel an qualitativ hochwertigen Daten, was die Leistungsf{\"a}higkeit von Deep-Learning-Modellen beeintr{\"a}chtigen kann. Diese Arbeit untersucht Data-Augmentation-Methoden im Bereich von Zeitreihen, welche dieses Problem adressieren. Dabei werden insbesondere Machine-Learning-Verfahren (Autoencoder, Variational Autoencoder, TimeGAN) untersucht und mit algorithmischen Ans{\"a}tzen (Jittering, Time Warping) verglichen. Die Methoden werden anhand der Kriterien {\"A}hnlichkeit, Diversit{\"a}t und N{\"u}tzlichkeit bewertet. Die Ergebnisse zeigen, dass algorithmische Verfahren konsistent bessere Ergebnisse liefern als Machine-Learning-Methoden. Zudem wird festgestellt, dass der Einsatz generativer Machine-Learning-Verfahren nur dann sinnvoll ist, wenn das generative Modell weniger komplex ist als das Modell, welches die synthetischen Daten letztlich verwenden soll.}, subject = {Maschinelles Lernen}, language = {de} } @masterthesis{Feustel2024, type = {Bachelor Thesis}, author = {Feustel, Sebastian}, title = {Vergleichende Untersuchung von statischen Schwachstellenscannern f{\"u}r OCI-based-Images anhand einer exemplarischen Webanwendung}, doi = {10.25933/opus4-3202}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-32025}, school = {Technische Hochschule Brandenburg}, pages = {63}, year = {2024}, abstract = {In der modernen IT-Infrastruktur hat die Container-Technologien sehr viel an Bedeutung gewonnen und finden breite Anwendung in der Softwareentwicklung. Die zunehmende Komplexit{\"a}t zeitgen{\"o}ssischer Anwendungen erfordert effektive Sicherheitsmaßnahmen, um potenzielle Schwachstellen fr{\"u}hzeitig zu erkennen und zu beheben. Diese Bachelorarbeit befasst sich mit der Evaluierung verschiedener Vulnerability Scanner, die speziell f{\"u}r Container-Images entwickelt wurden. Im Rahmen der Arbeit wird eine einfache Webanwendung mit Frontend und Backend erstellt und anschließend containerisiert. Diese Beispielanwendung dient als Grundlage f{\"u}r die systematische Untersuchung und Bewertung mehrerer Vulnerability Scanner. Ziel ist es, die Ergebnisse der verschiedenen Tools zu analysieren und das effektivste Werkzeug zur Identifizierung von Sicherheitsl{\"u}cken in containerisierten Umgebungen zu bestimmen. Durch die Analyse und den Vergleich der Ergebnisse wird aufgezeigt, welches Tool die besten Ergebnisse hinsichtlich Erkennungsrate und Genauigkeit liefert. Zus{\"a}tzlich bietet die Arbeit einen Einblick in die Nutzung der Scanner, woraus sich die Benutzerfreundlichkeit der einzelnen Scanner ableiten l{\"a}sst. Diese Arbeit leistet einen wichtigen Beitrag zur Sicherheit und Zuverl{\"a}ssigkeit von containerisierten Anwendungen in der Praxis und bietet praktische Empfehlungen zur Optimierung der Containersicherheit.}, subject = {Softwareschwachstelle}, language = {de} } @masterthesis{Wagner2024, type = {Bachelor Thesis}, author = {Wagner, Robin}, title = {Entwicklung eines Bildverarbeitungssystems zur Qualit{\"a}tspr{\"u}fung von Produktkennzeichnungsaufklebern mit Feature Matching}, doi = {10.25933/opus4-3203}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-32039}, school = {Technische Hochschule Brandenburg}, pages = {82}, year = {2024}, abstract = {Ziel dieser Arbeit ist die Entwicklung eines Bildverarbeitungssystems, das Qualit{\"a}tsm{\"a}ngel in Form von Schnitt- und Druckfehlern bei industriellen Produktkennzeichnungsaufklebern mit geeigneten Verfahren der Bildverarbeitung erkennt und beschreibt. Insbesondere soll untersucht werden, inwiefern Verfahren zur Detektion, Beschreibung und Zuordnung von abstrakt beschriebenen, charakteristischen Bildpunkten (Features) zur Erkennung von Druckfehlern zielf{\"u}hrend sein k{\"o}nnen.}, subject = {Bildverarbeitung}, language = {de} } @masterthesis{Hoerig2024, type = {Bachelor Thesis}, author = {H{\"o}rig, Philipp}, title = {Vergleichende Analyse der Performance und Ressourcenauslastung zwischen Platform- und Virtual-Threads in Java 21}, doi = {10.25933/opus4-3206}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-32064}, school = {Technische Hochschule Brandenburg}, pages = {74}, year = {2024}, abstract = {Die Bachelorarbeit untersucht die Performance und Ressourcenauslastung von Platform- und Virtual-Threads in Java 21. Im Kontext der E-Commerce-Plattform der Telef{\´o}nica Germany GmbH \& Co. OHG stellt sich die Frage, ob die neu eingef{\"u}hrten Virtual-Threads dazu verwendet werden k{\"o}nnen, den aktuellen Softwareentwicklungsprozess des Unternehmens zu optimieren. Zu diesem Zweck werden Proof-of-Concept-Anwendungen entwickelt, die auf den Webframeworks Spring MVC und Spring WebFlux basieren. Diese Anwendungen werden anschließend einem Stresstest unterzogen, um die Leistungsunterschiede der Threading-Modelle zu analysieren. Die Ergebnisse der Untersuchung legen nahe, dass die Verwendung von Virtual- Threads im Vergleich zu Platform-Threads in einer asynchronen Spring MVC- Architektur zu einer Reduktion der durchschnittlichen Antwortzeit um etwa 20 \% und zu einer Steigerung des Durchsatzes um nahezu 20 \% f{\"u}hrt. Des Weiteren konnte eine Reduktion der CPU- und RAM-Auslastung bei maximaler Last um 11 \% bzw. 13 \% festgestellt werden. Obwohl die Spring WebFlux- Architektur unter Verwendung von Platform-Threads und eines Netty-Servers in den meisten Testmetriken bessere Ergebnisse erzielte, sind die Resultate der asynchronen Spring MVC-Architektur mit Virtual-Threads vielversprechend. Eine Implementierung dieser Technologie k{\"o}nnte demnach eine deutliche Verbesserung des aktuellen Softwareentwicklungsprozesses im Unternehmen bewirken.}, subject = {Java Standard Edition 21}, language = {de} } @masterthesis{AbdoulKarim2024, type = {Bachelor Thesis}, author = {Abdoul Karim, Malik}, title = {Verbesserung der Alarmqualit{\"a}t und Entscheidungsfindung bei der Erkennung von Cyberangriffen durch Integration von Threat Intelligence und externen Datenquellen}, address = {Brandenburg an der Havel}, doi = {10.25933/opus4-3210}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-32103}, school = {Technische Hochschule Brandenburg}, pages = {64}, year = {2024}, abstract = {Diese Arbeit untersucht die Integration von externer Threat Intelligence in Cybersicherheitsplattformen, um die Erkennung von Bedrohungen in Echtzeit und die Reaktion auf Vorf{\"a}lle zu verbessern. Durch den Einsatz von Datenscraping-Techniken auf sozialen Medien (X) in Kombination mit einer Python-basierten Verarbeitungspipeline und Elasticsearch zur Speicherung und Abfrage von Daten wird ein robustes System zur Analyse und Visualisierung bedrohungsrelevanter Informationen entwickelt. Das System integriert Natural Language Processing (NLP) Techniken, wie das Stanford CoreNLP-Framework und den Stucco Entity Extractor, um gesammelte Daten mit Cybersicherheitsentit{\"a}ten anzureichern. Zudem werden maschinelle Lernmodelle, insbesondere Satztransformatoren, verwendet, um Texte einzubetten und die Kosinus-{\"A}hnlichkeit zwischen potenziellen Bedrohungen und Warnmeldungen zu berechnen. Damit wird gezeigt, dass die Korrelation externer Datenquellen mit Threat Intelligence die Pr{\"a}zision von Alarmen erheblich verbessert und sicherheitsrelevante Einblicke f{\"u}r Analysten liefert. Das finale System bietet eine skalierbare und effiziente Datenverarbeitung sowie Echtzeit-Visualisierungen durch Elasticsearch und Kibana-Dashboards zur Unterst{\"u}tzung der Entscheidungsfindung in der Cybersicherheit.}, subject = {Maschinelles Lernen}, language = {de} } @article{FroschLindauer2024, author = {Frosch, Katharina and Lindauer, Friederike}, title = {AI-based Automated Production of Learning Content - A Means to Bridging the Digital Divide in Workplace Learning?}, series = {International Journal On Advances in Systems and Measurements}, volume = {17}, journal = {International Journal On Advances in Systems and Measurements}, number = {3\&4}, publisher = {IARIA}, pages = {156 -- 165}, year = {2024}, language = {de} } @misc{OPUS4-3250, title = {Jahrbuch 2023/2024 der Absolventinnen und Absolventen}, editor = {Wilms, Andreas}, publisher = {Technische Hochschule Brandenburg}, address = {Brandenburg an der Havel}, organization = {Technische Hochschule Brandenburg}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-32507}, pages = {92}, year = {2024}, language = {de} } @misc{OPUS4-3254, title = {Forschungs- und Transferbericht der Technischen Hochschule Brandenburg 2022/23}, editor = {Wilms, Andreas and Hirsch, S{\"o}ren}, publisher = {Technische Hochschule Brandenburg}, address = {Brandenburg an der Havel}, organization = {Technische Hochschule Brandenburg}, issn = {1861-3462}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-32541}, pages = {98}, year = {2024}, language = {de} } @inproceedings{FroschLindauerZuidhof2024, author = {Frosch, Katharina and Lindauer, Friederike and Zuidhof, Niek}, title = {Exploring the Digital Divide in Workplace Learning: A Rapid Review}, series = {ICDS 2024, The Eighteenth International Conference on Digital Society, Barcelona, Spain}, booktitle = {ICDS 2024, The Eighteenth International Conference on Digital Society, Barcelona, Spain}, publisher = {IARIA}, pages = {1 -- 6}, year = {2024}, abstract = {This article examines the digital learning divide in workplace learning, with an emphasis on the disparity in the distribution of advanced learning technologies (ALT) across different types of workplaces. The study employs a rapid literature review methodology to analyze the utilization of ALT in workplace learning. The findings indicate that the use of ALT is predominantly concentrated in the education, health and medical sectors, with limited implementation in other sectors. Moreover, in smaller organizations, in non-technical sectors and among white-collar workers, there are fewer opportunities for technology-enhanced learning. The study highlights the need for more inclusive and comprehensive research to address the digital divide in workplace learning, taking into consideration practice-based evidence and exploring the themes covered by training. Furthermore, the paper proposes an investigation into the complexity and resource intensity of implementing ALT to enhance technology-based learning in all workplaces. In general, this research establishes the basis for comprehending and bridging the digital learning divide in the workplace.}, language = {en} } @article{KristalWeretecki2024, author = {Kristal, Samuel and Weretecki, Patrick}, title = {Social first? Not always! Brand co-creation through regional marketing at Deutsche Telekom}, series = {Transfer: Zeitschrift f{\"u}r Kommunikation \& Markenmanagement}, volume = {70}, journal = {Transfer: Zeitschrift f{\"u}r Kommunikation \& Markenmanagement}, number = {1}, publisher = {New Business Verlag}, pages = {67 -- 71}, year = {2024}, abstract = {Deutsche Telekom, one of the world's leading integrated telecommunications companies, has recently shifted its focus in event marketing to prioritize more personal co-creational communication on regional occasions, rather than largescale events. This paper outlines the three-part LAW-principle that Deutsche Telekom follows in its brand communication in Germany, providing examples for each of the three pillars. The co-creation resulting from brand communication is changing the role of marketing and brand practitioners. They are now required to negotiate with various stakeholders.}, language = {en} } @unpublished{TranconyWidemannLepper, author = {Tranc{\´o}n y Widemann, Baltasar and Lepper, Markus}, title = {A theory of conversion relations for prefixed units of measure}, doi = {10.48550/arXiv.2212.11580}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-31984}, pages = {1 -- 45}, abstract = {Units of measure with prefixes and conversion rules are given a formal semantic model in terms of categorial group theory. Basic structures and both natural and contingent semantic operations are defined. Conversion rules are represented as a class of ternary relations with both group-like and category-like properties. A hierarchy of subclasses is explored, each satisfying stronger useful algebraic properties than the preceding, culminating in a direct efficient conversion-by-rewriting algorithm.}, language = {en} } @inproceedings{PepeBuchholzLasenby2024, author = {Pepe, Alberto and Buchholz, Sven and Lasenby, Joan}, title = {Clifford Group Equivariant Neural Network Layers for Protein Structure Prediction}, series = {Northern Lights Deep Learning Conference, VOL 233, 09-11 Januar 2024, Tromso, Norwegen}, booktitle = {Northern Lights Deep Learning Conference, VOL 233, 09-11 Januar 2024, Tromso, Norwegen}, publisher = {PMLR}, pages = {1 -- 7}, year = {2024}, abstract = {We employ Clifford Group Equivariant Neural Network (CGENN) layers to predict protein coordinates in a Protein Structure Prediction (PSP) pipeline. PSP is the estimation of the 3D structure of a protein, generally through deep learning architectures. Information about the geometry of the protein chain has been proven to be crucial for accurate predictions of 3D structures. However, this information is usually flattened as machine learning features that are not representative of the geometric nature of the problem. Leveraging recent advances in geometric deep learning, we redesign the 3D projector part of a PSP architecture with the addition of CGENN layers . CGENNs can achieve better generalization and robustness when dealing with data that show rotational or translational invariance such as protein coordinates, which are independent of the chosen reference frame. CGENNs inputs, outputs, weights and biases are objects in the Geometric Algebra of 3D Euclidean space, i.e. G3,0,0, and hence are interpretable from a geometrical perspective. We test 6 approaches to PSP and show that CGENN layers increase the accuracy in term of GDT scores by up to 2.1\\%, with fewer trainable parameters compared to linear layers and give a clear geometric interpretation of their outputs.}, language = {en} }