TY - THES A1 - Surjanto, Jennifer T1 - Analysis of the Preferences of Younger and Older Indonesian Users Towards the User Interface of Mobile Instant Messaging Applications N2 - In recent years, the messaging application has been Indonesia’s most widely used mobile app. The number of users of these instant messaging (IM) applications has also been increasing constantly. Unfortunately, research has mentioned that older users often face challenges in using them. Although some papers have created guidelines for designing interfaces for the elderly, these applications are still focused on developing according to the need of young people. In addition, the aging of adults increases their chances of facing some difficulties. Therefore, this thesis aims to give a better understanding of the interface of the mobile instant messaging (MIM) application preferred by its users, specifically Indonesian users. By distributing an online-based survey to 150 Indonesian users of the MIM application, the preferences of several features in the message list and messaging interface of this application are collected. Then, the statistical analysis of the results found that the preferences of both users’ age groups differ. Among them are the button or icon each age group finds more suitable, the bottom bar in the messaging interface, and the placement of action options to be performed to the message they prefer most. Thus, this research also presents design recommendations that both younger and older users prefer. KW - Preference KW - Mobile Instant Messaging KW - User Interface KW - Indonesian user KW - Younger user KW - Older user Y1 - 2022 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-28675 ER - TY - JOUR A1 - Schnitzer, Julia A1 - Kodalle, Micha T1 - Brain computer interface (BCI) - UX-design for visual and non-visual interaction by mental commands in the context of technical possibilities JF - Electronic imaging JF - IS&T International Symposium on Electronic Imaging : Mobile Devices and Multimedia: Enabling Technologies, Algorithms, and Applications, 2022 N2 - How do we interact with the digital world in the future by only using our thoughts to interact? To interact with the digital world, we use gestures (most common: swipe gestures), voice, facial expressions and mental commands. The latter has become more important by recent press releases about scientific achievements, for example, from Neuralink [1] using invasive technology to control a computer game by thoughts only [2]. Another study says an application can display text on a screen by just thinking about a word [3]. Currently, BCIs are mainly developed for neurotechnology and healthcare. However, it is a question of time when these services will be available for commercial products for everyday life. (Until then, manufacturers have to minimize health risks and face privacy and safety regulations.) The thesis is that in the future, you will be able to interact with your digital devices just by using your thoughts and you’ll do much faster. This makes sense in many situations where you f. e. do not have a free hand (manufacturing, sports) or cannot speak (underwater). But for such services, you cannot rely on conventional visual design guidelines or interaction patterns, frameworks or libraries. Navigation interacting with a digital service by mental command has a lot of advantages, the human brain comes naturally with some specific features that force us to find a radically new way to interact with digital interfaces. The following study introduces you first into working conditions with mental commands, comparing invasive and non-invasive technologies, and later on comparing several possibilities of interaction patterns for a BCI of everyday usage. [1] Neuralink is a US neurotechnology company founded in July 2016 by Elon Musk and eight other persons. Neuralink’s goal is to develop a device for communication between human brain and computers, a so-called brain-computer-interface(BCI). [2] The Guardian, Fr. 9th April 2021 “Elon Musk startup shows monkey with brain chip implants playing video game”. https://www.theguardian.com/technology/2021/apr/09/elon-musk- neuralink-monkey-video-game . [3] Scientific American, 15th July 2021, Neuroscience, author Emily Willingham: “New Brain Implant Transmits Full Words from Neural Signals”. Y1 - 2022 UR - https://library.imaging.org/ei/articles/34/3/MOBMU-402 SN - 2470-1173 VL - 34 IS - 3 SP - 402-1 EP - 402-8 PB - Society for Imaging Science and Technology ER - TY - JOUR A1 - Kant, Daniel A1 - Johannsen, Andreas T1 - Evaluation of AI-based use cases for enhancing the cyber security defense of small and medium-sized companies (SMEs) JF - Electronic Imaging JF - IS&T International Symposium on Electronic Imaging : Mobile Devices and Multimedia: Enabling Technologies, Algorithms, and Applications, 2022 N2 - Companies are increasingly facing the challenges of a persistent cyber threat landscape. By means of AI, cyber attacks can be efficiently conducted more successful through offensive AI. As for cyber defense, AI can be also utilized against cyber threats (defensive AI). Due to limited resources, especially in small and medium-sized companies (SMEs), there is a need to deploy more effective defensive cyber security solutions. Precisely, the adaptation of AI-based resilient defenses must be driven forward. Therefore, the aim of this paper is to identify and evaluate AI-related use cases with a high impact potential on the cyber security level, while being applicable to SMEs at the same time. In order to reach the research goal, an extensive literature review of several online catalogs, surveys and online platforms was conducted. In conclusion, seven crucial AI-based security features were outlined that are providing a high impact potential to the security level for SMEs. Afterwards, the results are discussed and set into a broader context. Even though AI-based security solutions are providing a large range of advantages, certain challenges and barriers using AI-related security applications are addressed in the paper as well. A high need for usable state of the art AI based cyber security solution for SMEs was identified. Y1 - 2022 UR - https://library.imaging.org/ei/articles/34/3/MOBMU-387 SN - 2470-1173 VL - 34 IS - 3 SP - 387-1 EP - 387-8 PB - Society for Imaging Science and Technology ER - TY - JOUR A1 - Kombe, Emmanuel Yeri A1 - Lang'at, Nickson A1 - Njogu, Paul A1 - Malessa, Reiner A1 - Weber, Christian-Toralf A1 - Njoka, Francis A1 - Krause, Ulrich T1 - Process modeling and evaluation of optimal operating conditions for production of hydrogen-rich syngas from air gasification of rice husks using aspen plus and response surface methodology JF - Bioresource Technology N2 - Biomass gasification is recognized as a viable avenue to accelerate the sustainable production of hydrogen. In this work, a numerical simulation model of air gasification of rice husks is developed using the Aspen Plus to investigate the feasibility of producing hydrogen-rich syngas. The model is experimentally validated with rice husk gasification results and other published studies. The influence of temperature and equivalence ratio on the syngas composition, H2 yield, LHVSyngas, H2/CO ratio, CGE, and PCG was studied. Furthermore, the synchronized effects of temperature and ER are studied using RSM to determine the operational point of maximizing H2 yield and PCG. The RSM analysis results show optimum performance at temperatures between 820 °C and 1090 °C and ER in the range of 0.06–0.10. The findings show that optimal operating conditions of the gasification system can be achieved at a more refined precision through simulations coupled with advanced optimization techniques. Y1 - 2022 UR - https://linkinghub.elsevier.com/retrieve/pii/S096085242201063X SN - 0960-8524 VL - 361 SP - 1 EP - 11 PB - Elsevier ER - TY - JOUR A1 - Ruzankina, Iuliia A1 - Mukhin, Nikolay A1 - Mermoul, Ali A1 - Parfenov, Vadim A1 - Fron, Eduard A1 - Ferrini, Gabriele T1 - Surface optical sensitivity enhanced by a single dielectric microsphere JF - Optics Express N2 - Single dielectric microspheres can manipulate light focusing and collection to enhance optical interaction with surfaces. To demonstrate this principle, we experimentally investigate the enhancement of the Raman signal collected by a single dielectric microsphere, with a radius much larger than the exciting laser spot size, residing on the sample surface. The absolute microsphere-assisted Raman signal from a single graphene layer measured in air is more than a factor of two higher than that obtained with a high numerical aperture objective. Results from Mie’s theory are used to benchmark numerical simulations and an analytical model to describe the isolated microsphere focusing properties. The analytical model and the numerical simulations justify the Raman signal enhancement measured in the microsphere-assisted Raman spectroscopy experiments. Y1 - 2022 UR - https://doi.org/10.1364/OE.472720 VL - 30 IS - 24 SP - 43021 EP - 43036 PB - Optica ER - TY - CHAP A1 - Wrobel, Martin A1 - Hölzner, Heike M. A1 - Nicolai, Alexander T. T1 - The power of images: Metaphors that drive start-up collaborations T2 - G-Forum Tagungsband 2022 Y1 - 2022 UR - https://www.fgf-ev.de/g-forum-2022-in-dresden/ SP - 1 EP - 19 PB - G-Forum 2022 ER - TY - CHAP A1 - Seyerlein-Klug, Annegrit A1 - Deussen, Peter ED - Wahlster, Wolfgang ED - Winterhalter, Christoph T1 - 4.1.: Grundlagen T2 - Deutsche Normungsroadmap Künstliche Intelligenz Y1 - 2022 SP - 57 EP - 102 PB - DKE - Deutsche Kommission Elektrotechnik Elektronik Informationstechnik in DIN und VDE CY - Berlin/Offenbach am Main ET - 2 ER - TY - CHAP A1 - Ezennaya-Gomez, Salatiel A1 - Vielhauer, Claus A1 - Dittmann, Jana ED - Katsikas, Sokratis ED - Lambrinoudakis, Costas ED - Cuppens, Nora ED - Mylopoulos, John ED - Kalloniatis, Christos ED - Meng, Weizhi ED - Furnell, Steven ED - Pallas, Frank ED - Pohle, Jörg ED - Sasse, M. Angela ED - Abie, Habtamu ED - Ranise, Silvio ED - Verderame, Luca ED - Vidal, Jorge Maestre ED - Cambiaso, Enrico ED - Monge, Marco Antonio Sotelo T1 - A Semantic Model for Embracing Privacy as Contextual Integrity in the Internet of Things T2 - European Symposium on Research in Computer Security, Cham, 2022 Konferenzband: Computer Security. ESORICS 2021 International Workshops N2 - Due to the increasing number of complaints alleging privacy violations against companies to data protection authorities, the translation of business goals to system design goals and the subsequent consequences for customers’ privacy poses a challenge for many companies. For this reason, there is a need to bridge the economics of privacy and threats to privacy. To this end, our work relies on the concept of privacy as contextual integrity. This framework defines privacy as appropriate information flows subjected to social norms within particular social contexts or spheres. In this paper, we introduce a preliminary version of a semantic model which aims to relate and provide understanding on how well-established business goals may affect their customers’ privacy by designing IoT devices with permission access, data acquired by sensors, among other factors. Finally, we provide a use case application showing how to use the semantic model. The model aims to be an educational tool for professionals in business informatics during the modeling and designing process of a product which may gather sensitive data or may infer sensitive information, giving an understanding of the interaction of the product and its footprint with diverse actors (humans or machines). In the future, a further complete model of the presented may also target other groups, such as law enforcement bodies, as part of their educational training in such systems. T3 - Lecture notes in computer science - 13106 Y1 - 2022 UR - https://link.springer.com/10.1007/978-3-030-95484-0_24 SN - 978-3-030-95483-3 978-3-030-95484-0 U6 - https://doi.org/10.1007/978-3-030-95484-0_24 IS - 13106 SP - 413 EP - 423 PB - Springer CY - Cham ER - TY - CHAP A1 - Creutzburg, Reiner A1 - Hagen, Dirk A1 - Hasche, Eberhard ED - Agaian, Sos ED - Jassim, Sabah ED - DelMarco, Stephen ED - Asari, Vijayan K. T1 - Potentials and challenges for mega events: mobile devices usability for virtual reality, augmented reality, and visual effects T2 - Konferenz: Multimodal Image Exploitation and Learning 2022, Orlando, United States, 2022/ Koferenzband: Multimodal Image Exploitation and Learning 2022 Y1 - 2022 UR - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/PC12100/2618822/Potentials-and-challenges-for-mega-events--mobile-devices-usability/10.1117/12.2618822.full SN - 978-1-5106-5617-8 U6 - https://doi.org/10.1117/12.2618822 PB - SPIE - The International Society for Optics and Photonics CY - Orlando, United States ER - TY - CHAP A1 - Vogel, Mathias A1 - Goschin, Tobias A1 - Flassig, Robert T1 - Techno-economic analysis of excess wind energy utilization in the energy supply of residential quarters T2 - Konferenz: Symposium on Control of Power and Energy Systems (CPES), 2022/ Konferenzband:11th IFAC Symposium on Control of Power and Energy Systems (CPES 2022) Y1 - 2022 UR - https://www.sciencedirect.com/science/article/pii/S2405896322004529 SN - 978-1-71385-937-6 U6 - https://doi.org/10.32479/ijeep.8067 PB - Elsevier ER - TY - CHAP A1 - Johannsen, Andreas A1 - Maurer, Robert A1 - Stockhausen, Pablo ED - Wolf, Martin T1 - Konzeption eines Machine-Learning-Verfahrens zum Lösen von Green Vehicle Routing Problemen. T2 - Konferenz: Jahrestagung des Arbeitskreises Wirtschaftsinformatik an Hochschulen für Angewandte Wissenschaften im deutschsprachigen Raum (AKWI), Berlin, 2022/ Konferenzband: Angewandte Forschung in der Wirtschaftsinformatik 2022: Tagungsband zur 35. Jahrestagung des Arbeitskreises Wirtschaftsinformatik an Hochschulen für Angewandte Wissenschaften im deutschsprachigen Raum (AKWI) vom 11.09. bis 13.09.2022, ausgerichtet von der Hochschule für Technik und Wirtschaft Berlin (HTW Berlin) und der Hochschule für Wirtschaft und Recht Berlin (HWR Berlin) Y1 - 2022 SN - 978-3-95545-409-8 N1 - Band: 35 PB - GITO CY - Berlin ER - TY - JOUR A1 - Creutzburg, Reiner A1 - Hagen, Dirk A1 - Hasche, Eberhard T1 - Application scenarios and usability for modern 360 degree video projection rooms in the MICE industry JF - Electronic Imaging N2 - 360-degree image and movie content has gained popularity over the media and the MICE (Meeting, Incentive, Conventions, and Exhibitions) industry in the last few years. There are three main reasons for this development. First, on the one hand, it is the immersive character of this media form, and, on the other hand, the development of recording and presentation technology has made significant progress in terms of resolution and quality. Third, after a decade of dynamic rising, the MICE Industry focuses on a disruptive change for more digital-based solutions. 360-degree panoramas are particularly widespread in VR and AR technology. However, despite the high immersive potential, these forms of presentation have the disadvantage that the users are isolated and have no social contact during the performance. Therefore, efforts have been made to project 360-degree content in specially equipped rooms or planetariums to enable a shared experience for the audience. One application area for 360-degree panoramas and films is conference rooms in hotels, conference centers, and any other venues that create an immersive environment for their clients to stimulate creativity. This work aims to overview the various application scenarios and usability possibilities for such conference rooms. In particular, we consider applications in construction, control, tourism, medicine, art exhibition, architecture, music performance, education, partying, organizing and carrying out events, and video conferencing. These applications and use scenarios were successfully tested, implemented, and evaluated in the 360-degree conference room “Dortmund” in the Hotel Park Soltau in Soltau, Germany. Finally, the advantages, challenges, and limitations of the proposed method are described. Y1 - 2022 UR - https://library.imaging.org/ei/articles/34/3/MOBMU-401 U6 - https://doi.org/10.2352/EI.2022.34.3.MOBMU-401 SN - 2470-1173 N1 - Band:34 IS - 3 SP - 401 - 1 EP - 401 - 9 PB - Society for Imaging Science and Technology (IS&T) ER - TY - CHAP A1 - Creutzburg, Reiner A1 - Hagen, Dirk A1 - Hasche, Eberhard ED - Agaian, Sos ED - Jassim, Sabah ED - DelMarco, Stephen ED - Asari, Vijayan K. T1 - Application scenarios and usability for modern 360 degree video projection rooms in modern meeting, incentive, conventions, and exhibitions (MICE) industry T2 - Konferenz: SPIE Defence and Commercial Sensing Industry, Orlando, United States, 2022/ Band: PROCEEDINGS VOLUME PC12100 SPIE DEFENSE + COMMERCIAL SENSING | 3 APRIL - 13 JUNE 2022 Multimodal Image Exploitation and Learning 2022 Y1 - 2022 UR - https://www.spiedigitallibrary.org/conference-proceedings-of-spie/PC12100/2618848/Application-scenarios-and-usability-for-modern-360-degree-video-projection/10.1117/12.2618848.full SN - 978-1-5106-5617-8 U6 - https://doi.org/10.1117/12.2618848 PB - SPIE - The International Society for Optics and Photonics CY - Orlando, United States ER - TY - JOUR A1 - Klopp, Christoph A1 - Trittel, Torsten A1 - Harth, Kirsten A1 - Stannarius, Ralf T1 - Smectic free-standing films under fast lateral compression JF - Soft Matter N2 - Smectic films in a collapsing catenoid develop spontaneous wrinkling patterns like solid sheets. Smectic freely-suspended films can wrinkle like solid sheets. This has been demonstrated earlier with shape-fluctuating smectic bubbles. Here, we exploit the collapse of smectic catenoid films with a central equatorial film to expose the latter to rapid lateral compression. Wrinkle formation is observed in the planar film and the thickness dependence of the undulation wavelength is measured. In addition to the central film, its border undergoes an undulation instability as well. Y1 - 2022 UR - http://xlink.rsc.org/?DOI=D1SM01207J U6 - https://doi.org/10.1039/D1SM01207J SN - 1744-683X, 1744-6848 SP - 146 EP - 155 PB - Royal Society of Chemistry ER - TY - JOUR A1 - Chaurasia, Prashtan Kumar A1 - Goecke, Sven-Frithjof A1 - De, Amitava T1 - Real-time monitoring of temperature field, metal transfer and cooling rate during gas metal arc-directed energy deposition JF - Science and Technology of Welding and Joining Y1 - 2022 U6 - https://doi.org/10.1080/13621718.2022.2080447 SN - 13621718 IS - 27 SP - 512 EP - 521 PB - Taylor & Francis ER - TY - JOUR A1 - Blasek, Katrin T1 - Auskunfteiwesen und Kreditscoring in unruhigem Fahrwasser JF - Zeitschrift für Datenschutz Y1 - 2022 UR - https://beck-online.beck.de/Dokument?vpath=bibdata%2Fzeits%2Fzd%2F2022%2Fcont%2Fzd.2022.433.1.htm&pos=1&hlwords=on SN - 2192-5593 IS - 8 SP - 433 EP - 438 PB - C.H.Beck ER - TY - JOUR A1 - Tumarkin, Andrey A1 - Tyurnina, Natalya A1 - Mukhin, Nikolay A1 - Tyurnina, Zoya A1 - Sinelshchikova, Olga A1 - Gagarin, Alexander A1 - Sapego, Eugeny A1 - Kretser, Yriy T1 - Glass-ceramic ferroelectric composite material BaTiO3/KFeSi for microwave applications JF - Composite Structures N2 - Glass-ceramic composites consisting of potassium-iron-silicate glass and barium titanate mixed in various proportions were successfully synthesized by low-temperature sintering. The crystal structure of the obtained composite samples, the porosity and the microhardness were studied by the X-ray diffraction, the electron microscopy, the weight method, and the Vickers method. Electrical characteristics (dielectric permittivity, tunability and losses) of as-prepared and annealed in oxygen medium samples were investigated at microwaves. According to structural analysis, the synthesized samples are a mixture of KFeSi glass, ferroelectric BaTiO3, and dielectric barium polytitanates; the ratio of the latter determines the electrical properties of the composites. Depending on the content of barium titanate, the studied composite samples show a permittivity from 50 to 270 with a dielectric loss level of 0,1–0,02 in frequency range from 3 to 10 GHz. Annealing of composite samples in an oxygen-containing environment leads to an increase in their dielectric permittivity and tunability by 10–25% and a twofold decrease in dielectric loss. Y1 - 2022 UR - https://linkinghub.elsevier.com/retrieve/pii/S0263822321014161 SN - 0263-8223 VL - 281 SP - 1 EP - 10 PB - Elsevier ER - TY - JOUR A1 - Hasche, Eberhard A1 - Karaschewski, Oliver A1 - Creutzburg, Reiner ED - Society for Imaging Science and Technology, T1 - RAW images and videos for 30K panoramic projection using the ACES workflow JF - Electronic Imaging Y1 - 2022 UR - https://library.imaging.org/ei/articles/34/3/MOBMU-400 U6 - https://doi.org/10.2352/EI.2022.34.3.MOBMU-400 SN - 2470-1173 IS - 34 SP - 400-1 EP - 400-13 PB - Society for Imaging Science and Technology ER - TY - JOUR A1 - Dück, M. A1 - Beck, Eberhard A1 - Steckelberg, A. T1 - Literaturrecherche zur Leitliniengetreue Behandlung von Brustkrebspatientinnen JF - Geburtshilfe und Frauenheilkunde Y1 - 2022 U6 - https://doi.org/10.1055/s-0042-1749035 VL - 82 IS - 6 SP - 631 PB - Thieme ER - TY - JOUR A1 - Wang, Jing A1 - Harth, Kirsten A1 - Puzyrev, Dmitry A1 - Stannarius, Ralf T1 - The effect of obstacles near a silo outlet on the discharge of soft spheres JF - New Journal of Physics KW - fluid dynamics Y1 - 2022 U6 - https://doi.org/10.1088/1367-2630/ac8bea VL - 24 PB - IOP ER - TY - JOUR A1 - Regehly, Martin A1 - Hecht, Stefan T1 - Auf dem Weg zum Replikator BT - volumetrischer 3D-Druck JF - Physik in unserer Zeit KW - Xolographie KW - 3D-Druck KW - Additive Fertigung KW - volumetrisch KW - Photoschalter KW - Lichtschnitt Y1 - 2022 U6 - https://doi.org/10.1002/piuz.202201637 SN - 1521-3943 SN - 1521-3943 (eISSN) VL - 53 IS - 3 SP - 125 EP - 131 PB - Wiley-VCH GmbH ER - TY - JOUR A1 - Kraska, Martin T1 - Meclib: Dynamic and Interactive Figures in STACK Questions Made Easy JF - International Journal of Emerging Technologies in Learning (iJET) N2 - Making and interpretation of drawings and schematics is an important skill to be developed in engineering education. The question type STACK in the Moodle learning management system combined with the interactive graphics library JSXGraph has a great potential for implementation of e-learning resources addressing these skills in formative and summative settings. The authoring process of such materials is complex due to multiple markup and programming languages like HTML, LaTeX, Maxima and JavaScript (JS) being involved. The Meclib concept mitigates this complexity and allows for efficient bulk production of material with consistent appearance and user experience. The core of Meclib is a set of pre-defined JSXGraph-based objects with an interface to Maxima, such that no problem specific JS code is required at all. The present paper outlines the basic ideas of the implementation and demonstrates the approach for some typical examples of different complexity. The focus is on applications in engineering mechanics, starting from static illustrations up to an editor for free body diagrams, with rich adaptive formative feedback. Y1 - 2022 UR - https://online-journals.org/index.php/i-jet/article/view/36501 U6 - https://doi.org/10.3991/ijet.v17i23.36501 SN - 1863-0383 VL - 17 IS - 23 SP - 15 EP - 27 PB - International Association of Online Engineering ER - TY - JOUR A1 - Kuznetsov, Artur A1 - Frorip, Aleksandr A1 - Sünter, Alar A1 - Korsakov, Vadim A1 - Konoplev, Georgii A1 - Stepanova, Oksana A1 - Roschina, Natalia A1 - Ovsyannikov, Nikolay A1 - Lialin, Daniil A1 - Gerasimchuk, Roman A1 - Dmitriev, Alexander A1 - Mukhin, Nikolay A1 - Hirsch, Sören T1 - Optical Chemical Sensor Based on Fast-Protein Liquid Chromatography for Regular Peritoneal Protein Loss Assessment in End-Stage Renal Disease Patients on Continuous Ambulatory Peritoneal Dialysis JF - Chemosensors KW - optical chemical sensor KW - fast-protein liquid chromatography KW - UV LED KW - end-stage renal disease KW - peritoneal dialysis KW - peritoneal protein loss KW - albumin KW - point-of-care diagnostic devices Y1 - 2022 U6 - https://doi.org/10.3390/chemosensors10060232 VL - 10 IS - 6 PB - MDPI ER - TY - JOUR A1 - Blasek, Katrin T1 - Haftung für KI – Zum Vorschlag der EU-Kommission JF - Datenschutz-Berater N2 - Zur Umsetzung ihres "digitalen Kompass 2030" hat die Kommission zwei weitere Rechtsakte vorgeschlagen. Die mehr als 30 Jahre alte Produkthaftungsrichtlinie soll revidiert und eine neue Richtlinie über die Haftung für künstliche Intelligenz erlassen werden. Damit soll die politisch gewünschte Etablierung von KI in der EU für Wirtschaft und Gesellschaft auch haftungsrechtlich abgesichert werden. Der Beitrag analysiert die Richtlinie über die Haftung für künstliche Intelligenz in ihrem Verhältnis zum Gesetz über künstliche Intelligenz und zur Produkthaftungsrichtlinie. KW - Datenschutz KW - Künstliche Intelligenz Y1 - 2022 SN - 0170-7256 IS - 11 SP - 299 EP - 302 PB - Deutscher Fachverlag ER - TY - JOUR A1 - Lamshöft, Kevin A1 - Neubert, Tom A1 - Hielscher, Jonas A1 - Vielhauer, Claus T1 - Knock, knock, log: Threat analysis, detection & mitigation of covert channels in syslog using port scans as cover JF - Forensic Science International: Digital Investigation Y1 - 2022 U6 - https://doi.org/10.1016/j.fsidi.2022.301335 SN - 2666-2817 VL - 40 PB - Elsevier ER - TY - JOUR A1 - Trittel, Torsten A1 - Klopp, Christoph A1 - Harth, Kirsten A1 - Stannarius, Ralf T1 - Stability and Rupture of Liquid Crystal Bridges under Microgravity JF - Crystals KW - smectic liquid-crystals KW - Rayleigh-Plateau instability KW - TEXUS suborbital rocket KW - microgravity Y1 - 2022 U6 - https://doi.org/https://doi.org/10.3390/cryst12081092 VL - 12 IS - 8 PB - MDPI ER - TY - JOUR A1 - Vollmer, Michael A1 - Shaw, Joseph A. T1 - Seeing better in nature: contrast enhancement by near infrared imaging JF - European Journal of Physics Y1 - 2022 U6 - https://doi.org/10.1088/1361-6404/ac578d VL - 43 IS - 3 PB - Institute of Physics Publishing ER - TY - JOUR A1 - Konoplev, Georgii A1 - Agafonova, Darina A1 - Bakhchova, Liubov A1 - Mukhin, Nikolay A1 - Kurachkina, Marharyta A1 - Schmidt, Marc-Peter A1 - Verlov, Nikolay A1 - Sidorov, Alexander A1 - Oseev, Aleksandr A1 - Stepanova, Oksana A1 - Kozyrev, Andrey A1 - Dmitriev, Alexander A1 - Hirsch, Sören T1 - Label-Free Physical Techniques and Methodologies for Proteins Detection in Microfluidic Biosensor Structures JF - Biomedicines KW - label-free biosensor KW - microfluidics KW - proteins detection KW - optical biosensors KW - impedance spectroscopy KW - plasmon resonance KW - point-of-care KW - diagnostic devices Y1 - 2022 U6 - https://doi.org/10.3390/biomedicines10020207 SN - 2227-9059 VL - 10 IS - 2 SP - 207 PB - MDPI ER - TY - JOUR A1 - John, Stefanie A1 - Orlowski, Katja A1 - Mrkor, Kai-Uwe A1 - Edelmann-Nusser, Jürgen A1 - Witte, Kerstin T1 - Differences in hip muscle strength and static balance in patients with transfemoral amputations classified at different K-levels : A preliminary cross-sectional study JF - Canadian Prosthetics & Orthotics Journal (CPOJ) KW - Amputation KW - K-level KW - Balance KW - Transfemoral amputation KW - Muscle strength KW - Residual limb KW - Static balance Y1 - 2022 U6 - https://doi.org/10.33137/cpoj.v5i1.37456 SN - 2561-987X VL - Vol. 5 IS - No.1 PB - University of Toronto Libraries ER - TY - JOUR A1 - Kombe, Emmanuel Yeri A1 - Langat, Nickson A1 - Njogu, Paul A1 - Malessa, Reiner A1 - Weber, Christian-Toralf A1 - Njoka, Francis A1 - Krause, Ulrich T1 - Numerical investigation of sugarcane bagasse gasification using Aspen Plus and response surface methodology JF - Energy Conversion and Management KW - Biomass gasification KW - Aspen Plus KW - Optimization KW - Gibbs free energy minimization KW - Response surface methodology Y1 - 2022 U6 - https://doi.org/10.1016/j.enconman.2021.115198 SN - 0196-8904 VL - 254 PB - Elsevier ER - TY - JOUR A1 - Marcus, von der Heyde A1 - Gerl, Armin A1 - Groß, Rainer A1 - Klapper, Frank A1 - Meister, Vera G. A1 - Knaden, Andreas A1 - Rehm, Simone T1 - Gemeinsame Digitalisierung durch die Entwicklung von IT-Governance-Strukturen auf Landesebene BT - Vergleich von Zielen und Steuerung der Hochschulkooperation von fünf Bundesländern in Deutschland JF - Wirtschaftsinformatik & Management Y1 - 2022 U6 - https://doi.org/10.1365/s35764-022-00393-8 PB - Gabler ER - TY - JOUR A1 - Tetzlaff, Laura A1 - Heinrich, Andrea Sanguino A1 - Schadewitz, Romy A1 - Thomeczek, Christian A1 - Schrader, Thomas T1 - Die Analyse des CIRSmedical.de mittels Natural Language Processing JF - Zeitschrift für Evidenz, Fortbildung und Qualität im Gesundheitswesen T2 - The analysis of CIRSmedical.de using Natural Language Processing KW - CIRS KW - Natural Language Processing KW - Patientensicherheit Y1 - 2022 U6 - https://doi.org/10.1016/j.zefq.2021.12.002 SN - 2212-0289 PB - Elsevier ER - TY - JOUR A1 - Fitz, Lukas R. G. A1 - Scheeg, Michaela A1 - Scheeg, Jochen T1 - Amplifying Human Factors in the Inquiry of SMEs’ Needs in Digitalization Collaborations with External Service Providers BT - 3rd International Conference on Industry 4.0 and Smart Manufacturing JF - Procedia Computer Science KW - Digitalization KW - SME KW - Human-Centered Design KW - Open Innovation Y1 - 2022 U6 - https://doi.org/10.1016/j.procs.2022.01.257 SN - 1877-0509 VL - 200 SP - 595 EP - 601 PB - Elsevier ER - TY - JOUR A1 - Weimer, Katja A1 - Buschhart, Cliff A1 - Broelz, Ellen K. A1 - Enck, Paul A1 - Horing, Björn T1 - Bibliometric Properties of Placebo Literature From the JIPS Database: A Descriptive Study JF - Frontiers in Psychiatry Y1 - 2022 U6 - https://doi.org/10.3389/fpsyt.2022.853953 SN - 1664-0640 VL - 13 PB - Frontiers Research Foundation ER - TY - JOUR A1 - Missaoui, Amine A1 - Harth, Kirsten A1 - Trittel, Torsten A1 - Klopp, Christoph A1 - Stannarius, Ralf A1 - Lacaze, Emanuelle T1 - Shape instabilities of islands in smectic films under lateral compression JF - Soft Matter Y1 - 2022 U6 - https://doi.org/10.1039/D2SM00144F SN - 1744-6848 VL - 16 SP - 3193 EP - 3205 PB - Royal Society of Chemistry ER - TY - JOUR A1 - Wagener, Jan A1 - Fitz, Lukas R. G. T1 - How to assemble an Automatic Water Dispenser System – Design of a Learning Station feat. Augmented Reality KW - augmented realiy KW - learning KW - industrial sector Y1 - 2022 UR - https://www.usf.edu/business/documents/desrist/paper_113.pdf PB - University of South Florida ER - TY - BOOK A1 - Kraska, Martin T1 - SMath with Maxima BT - Getting Started with the Maxima Plugin KW - SMath KW - Software KW - Maxima Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-29497 PB - Technische Hochschule Brandenburg CY - Brandenburg ER - TY - THES A1 - Runge, Tilman T1 - Dismantling the Quantum Threat N2 - The Quantum Threat looms over cryptography: Once strong quantum computers become available, its game over for encryption and privacy. This widespread understanding of the how cryptography will be impacted by quantum computing is challenged in this thesis to achieve a more nuanced understanding of both the ramifications of the Quantum Threat and potential countermeasures to it. KW - quantum threat KW - q-day KW - Shor KW - Computersicherheit KW - Kryptosystem KW - Datenschutz Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-28889 ER - TY - RPRT A1 - Maurer, Robert A1 - Johannsen, Andreas A1 - Pochanke, Oliver T1 - Analyse der Trends und Alternativen zur Online-Präsenz als Kommunikationskanal von kleinen und mittleren Unternehmen durch den Einsatz von Plattformen BT - Ergebnisse einer Studie durch das Institut für Betriebliche Integration und Digitalisierung (IBID) am Fachbereich Wirtschaft der Technischen Hochschule Brandenburg T2 - Schriften des Instituts für Betriebliche Integration und Digitalisierung (IBID) N2 - Die Digitalisierung ist eine der Herausforderungen der heutigen Zeit. Einhergehend mit der Zunahme der Nutzung des Internets in vielen Lebensbereichen steigt auch die Wichtigkeit für Unternehmen, einen repräsentativen Auftritt zu etablieren. Für kleine und mittlere Unternehmen bedeutet das Betreiben und Pflegen einer Onlinepräsenz oftmals einen hohen finanziellen und zeitlichen Aufwand. Ziel des vorliegenden Arbeitspapiers ist es, kleinen und mittleren Unternehmen eine Alternative zu herkömmlichen Content Management Systemen darzulegen und sie bei der Entscheidungsfindung zu unterstützen. 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 gegenüber Content Management Systemen dargestellt werden. Anschließend wurden Kriterien definiert und Empfehlungen dargelegt, welche kleine und mittlere Unternehmen im Entscheidungsprozess unterstützen sollen. Letztlich wurden die Einrichtung sowie die wichtigsten Funktionen einer Plattform dargestellt. Die Ergebnisse zeigen, dass die Nutzung einer Onlineplattform für lokal begrenze Unternehmen mit geringen Anforderungen an die Funktionalität und hoher Kostensensibilität eine sinnvolle Alternative ist. Abschließend wurde anhand des realen Fallbeispiels „Google My Business“ (seit 2022: „Google Business Profile“) auf die Funktionen sowie Vorteile und Möglichkeiten einer solchen Plattform eingegangen. N2 - Digitalization is one of the big challenges of our time. Along with the increased online life, the importance for companies to establish a representative online presence is growing as well. Especially for small and medium size companies, the operation and maintenance of an online presence means a high effort in terms of time and financial investment. The aim of this study is to provide an alternative to common content management systems for small medium size companies. In addition, they should be supported in the decision making process. To answer the research questions the methodical approach of a literature and internet research was used. From the analysis, three online business platforms were identified and their advantages and disadvantages compared to content management systems were presented. Subsequently, criteria were defined and recommendations were presented, which should support small and medium-sized enterprises in the decision-making process. Finally, the setup as well as the most important functions of a platform were presented. The results show that the use of an online platform is a sensible alternative for locally limited companies with low functionality requirements and high cost sensitivity. Finally, the functions as well as advantages and possibilities of such a platform were discussed on the basis of the real case study "Google My Business" (since 2022: "Google Business Profile") T3 - Schriften des Instituts für Betriebliche Anwendungssysteme - 23/1 KW - Digitalisierung KW - KMU KW - Google Business Profile KW - Online Präsenz KW - Online Plattformen KW - Online-Marketing KW - Geschäftsmodell KW - Plattform KW - Klein- und Mittelbetrieb Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-28853 SN - 2198-090X VL - 11 PB - Technische Hochschule Brandenburg CY - Brandenburg an der Havel ER - TY - JOUR A1 - Pufal, Jakob A1 - Shun, Hanna A1 - Ben Ammar, Rami A1 - Jeckstadt, Janik A1 - Schultheiß, John T1 - The Great Shutdown BT - How disruptive would a military escalation of the China-Taiwan-Conflict be to global economies? N2 - This research aims to examine the potential impact of a military escalation of the China-Taiwan conflict on global economies, with a particular focus on the microchip production industry in Taiwan. The academic paper will analyze the current economic ties between Taiwan and other countries, as well as the potential consequences of a disruption in trade and production caused by a military conflict. The research will also examine the role of Taiwan's microchip industry in the global supply chain and its potential vulnerability to a disruption in the event of a military escalation. Additionally, this scientific paper will explore the possible economic responses of other countries and the international community to a military escalation of the China-Taiwan conflict. The research will use a combination of the systematic literature review and the scenario technique to demonstrate potential impact of a military escalation of the China-Taiwan conflict on global economies, with a specific focus on the microchip production industry in Taiwan. KW - China Taiwan Conflict KW - China KW - Taiwan KW - China Taiwan War KW - microchip KW - semiconductor KW - foundry KW - TSMC KW - microchip manufacturing KW - Weltwirtschaft KW - Internationale Produktion KW - Chip KW - Fallstudie KW - Bewaffneter Konflikt Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-28942 ER - TY - THES A1 - Funke, Maren T1 - Die Beeinflussbarkeit der für die ökologische Nachhaltigkeit relevanten KPIs durch die Digitalisierung in kleinen Unternehmen N2 - Ist die Digitalisierung für kleine Unternehmen ein Werkzeug, Prozesse ökologisch nachhaltiger zu gestalten? Am Beispiel eines Baustoffhandels wird dies Untersucht. Die Aufstellung umweltbezogener KPIs für einzelne Prozesse jeweils vor und nach der (Teil-)Digitalisierung wird durchgeführt. Die Umweltauswirkungen der digitalen Transformation lassen sich somit messen und bewerten. KW - Digitalisierung KW - Klein- und Mittelbetrieb KW - Nachhaltigkeit Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-28992 PB - Technische Hochschule Brandenburg CY - Brandenburg an der Havel ER - TY - THES A1 - Nicksch, Tino T1 - Schwachstellenanalyse in der Kommunikation von Medizingeräten am Beispiel von B. Braun Infusionspumpen N2 - Der Einfluss von Technik in der Medizin wird immer deutlicher. Hierbei steigt auch im gleichen Maß die Bedrohung auf das Gesundheitswesen durch Cyberkriminalität. [1] Diese Arbeit umfasst eine Schwachstellenbetrachtung und Analyse der Kommunikation zweier B. Braun Infusionspumpen und dem dazugehörigen Konfigurationswerkzeug, der „Online-Suite“. Hierbei wurde ein Fokus auf vor allem drei Untersuchungsmethoden gelegt: 1. Ein Portscan mittels „Nmap“, welcher bereits erste, leicht einsehbare Informationen über die verwendeten Ports und Dienste aufdecken sollte. 2. Ein Schwachstellenscan durchgeführt mit „GVM/OpenVAS“, welcher die einzelnen Schwachstellen der Dienste und Software an Hand von einem „CVSS-Wert“ bewertet. 3. Eine Betrachtung des Netzwerkverkehrs in Wireshark, um den Aufbau der Kommunikation zu analysieren. Hierbei ergaben sich diverse Sicherheitsrisiken und Probleme. Diese können im schlimmsten Fall auch die Sicherheit des Patienten beeinflussen. Besonders häufig wurden hierbei Schwachstellen gefunden, welche durch veraltete und nicht weiter unterstützte Software bedingt waren. KW - Vulnerability Scan KW - Medical Devices KW - Infusion Pumps KW - Security KW - Patient Safety KW - Informationssicherheit KW - Medizinisches Gerät KW - Infusomat Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-29024 ER - TY - GEN A1 - Lemke, Claudia T1 - Umfragedesign "LLM-Readiness" N2 - Das Umfragedesign "LLM-Readiness" - Gruppen- und Einzelumfrage unter Erstsemesterstudierenden der HWR Berlin im Wintersemester 2022/2023 - ergänzt die Publikation "Kritische Reflexion und Handlungsansätze zum Einsatz Generativer KI in der Wirtschaftsinformatik, welche zur Jahrestagung des AKWI im September 2023 eingereicht wird. KW - Umfrage KW - Forschungsplanung KW - Umfragedesign Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-29099 ER - TY - THES A1 - Jungclaus, Bjarne T1 - Detektion von Ransomware in der IT-Systemlandschaft bei Betreibern Kritischer Infrastruktur N2 - Ransomware-Angriffe auf Kritische Infrastrukturen, wie Energie- oder Wasserversorgung, treten immer häufiger auf und stellen eine große Bedrohung für die Betreiber und die Bevölkerung dar. Eine verlässliche und frühzeitige Erkennung dieser Angriffe ist somit ein wichtiger Bestandteil von IT-Sicherheitskonzepten. Ziel dieser Arbeit ist die Klärung der Fragen, welche Methoden zur Erkennung von Ransomware eingesetzt werden und welche Indikatoren für Ransomware-Angriffe mithilfe eines Angriffserkennungssystems in einer nachgebildeten IT-KRITIS-Infrastruktur erkannt werden können. Es wurden Methoden zur Detektion von Malware und Ransomware genauer betrachtet. In einem Experiment wurde die Erkennung von Ransomware mithilfe eines Angriffserkennungssystems (Elastic Stack) untersucht. Das Ergebnis dieser Arbeit zeigt, dass die Erkennung sowohl mit allgemeinen Detektionsansätzen als auch mit auf Ransomware spezialisierten Methoden erfolgen kann. Aus dem Experiment geht hervor, dass die Detektion von Ransomware-Angriffen mithilfe eines Angriffserkennungssystems in der Praxis erfolgreich ist. Indikatoren für RansomwareAngriffe werden sowohl auf Systemebene (Prozesse, Dateioperationen, Registry-Änderungen etc.) als auch auf Netzwerkebene (C2-Kommunikation, auffällige DNS-Anfragen, IPAdressen etc.) erkannt. KW - IT-Sicherheit KW - Kritische Infrastruktur KW - Ransomware KW - Detektion KW - Informationssicherheit KW - Datenverarbeitungssystem KW - Computersicherheit Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-29033 ER - TY - THES A1 - Monz, Johannes Stefan T1 - Datenmodellinterne Revisionshistorie für nebenläufige Geschäftsprozesse am Fallbeispiel der Verwaltung von Studiengangscurricula N2 - Die Versionierung von Daten ist ein hochkomplexes Problem, das viele verschiedene Aspekte berücksichtigen muss. Daher ist in diesem Bereich bisher noch kein univer- sell anwendbarer Ansatz beschrieben worden. Verschiedene Autoren haben sich an einer Lösung versucht und Herangehensweisen für ihre eigenen Anwendungsfälle entwickelt. In dieser Arbeit wird ein neuer Ansatz anhand eines Fallbeispiels vorgestellt. Der An- satz zielt darauf ab, Daten- und Versionierungsstrukturen in einem relationalen Da- tenmodell zu vereinigen und dabei eine einfache Integration von Geschäftsprozessen zu ermöglichen. Insbesondere wird darauf geachtet, dass die Erzwingung des korrekten Ablaufs von Geschäftsprozessen durch eine maschinelle Umsetzung derselben möglich ist. Das Datenmodell beinhaltet eine vollständige Versionierungshistorie in Form eines gerichteten zyklenlosen Graphen. Hiermit bietet es eine breit anwendbare Lösung zur Datenversionierung, die zudem gut in bestehende Abläufe und Datensätze integrierbar ist. In dieser Arbeit wird das kombinierte Datenmodell vorgestellt und anhand von ge- nerischen Beispielen erläutert. Zudem wird die Funktionalität des Ansatzes anhand des Fallbeispiels der Verwaltung der Studiengangscurricula des Fachbereichs Informatik und Medien der Technischen Hochschule Brandenburg belegt. Hierbei wird auch die Integra- tion von Geschäftsprozessen und die Nutzbarkeit in der tatsächlichen Datenverwaltung dargestellt. N2 - Versioning of Datasets is a highly complex problem whose solutions are required to take many different aspects into account. As such, no universally applicable approach has been published yet. Various authors have tried and developed solutions for their own use cases. In this thesis, we present our approach based on our use case. The approach shown here aims to unify structures for data persistence and version control into a single data model and to allow a seamless integration of business processes. In particular, the aim is to ensure that an enforcement of business processes via an automated execution of said processes is easily possible. The data model delivers a complete version history as a directed non-cyclic graph. As such, it offers a widely applicable solution for data versioning in small systems, which is also easily integratable into existing data sets, processes and structures. This thesis presents the combined data model and explains its appliation using generic examples. Afterwards, the funcionality of the approach in a real-life setting is demonstrated with our use case of managing the curricula of the Department of Computer Science and Media at the Brandenburg University of Applied Sciences. In this, the integration of business processes and the usage in actual data mangement is also demonstrated. KW - Datenverarbeitungssystem KW - Versionsverwaltung KW - Relationale Datenbank KW - Prozesskette Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-29380 ER - TY - THES A1 - Nowak, Max T1 - Integration von Endnutzer Netzwerkgeräten in zentralisierte Protokoll Management Systeme am Beispiel der FRITZ!Box N2 - Diese Bachelorarbeit untersucht die Einbindung eines typischen Endnutzer Netzwerkgerätes in ein bestehendes Protokollierungssystem. Aufgrund des erhöhten Anteils an Mitarbeitern im Homeoffice in deutschen Firmen sind die Heimnetzwerke ein bedeutend wichtigerer Bestandteil der Firmensicherheit und es soll untersucht werden, wie übliche Heimnetzwerkgeräte in die Sicherheitsstrukturen der Firmen eingebunden werden können. Zu diesem Zweck wird ein Proof-of-Concept basierend auf den Technologien TR-064, zur Kommunikation mit der FRITZ!Box und Syslog, zur Kommunikation mit einem Protokollierungssystem entwickelt. Anhand dieses Prototypen lässt sich feststellen, dass eine solche Einbindung zwar einfach umzusetzen ist, aber auf dieser keine effektive Überwachung aufgebaut werden kann. Die Ursache dafür ist der Umstand, dass TR-064 nur einen Bruchteil der Logdaten von der FRITZ!Box zurücksendet. KW - Computersicherheit KW - Informationssicherheit KW - Logdatei Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-29191 ER - TY - GEN A1 - Weber, Simon A1 - Stein, Stefan A1 - Pilgermann, Michael A1 - Schrader, Thomas T1 - Attack Detection for Medical Cyber- Physical Systems - The Visualization N2 - Attack Detection for Medical Cyber-Physical Systems - The Visualization KW - Detection KW - IDS KW - intrusion prevention KW - medical cyber-physical systems KW - medical CPS Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-29142 ER - TY - BOOK A1 - Kraska, Martin T1 - Technisches Rechnen mit SMath : Matrizen, Diagramme, Datenverarbeitung KW - SMath KW - Software KW - Anleitung Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-29486 PB - Technische Hochschule Brandenburg CY - Brandenburg ER - TY - BOOK A1 - Kraska, Martin T1 - Technisches Rechnen mit SMath : Erste Schritte KW - SMath KW - Software KW - Anleitung Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-29479 PB - Technische Hochschule Brandenburg CY - Brandenburg ER - TY - THES A1 - Dalitz, Franz T1 - Implementierung eines Stacks zum Erzeugen, Verarbeiten und Visualisieren von Telemetriedaten für ein Microservice basiertes System N2 - Einsicht in die Abläufe und Leistung heutiger Software und verteilter Systeme zu erlangen, wird durch stetig steigende Komplexität zunehmend erschwert. Die Firma Peterson Technologies GmbH implementierte zur Linderung dieser Problematik ein internes Telemetriesystem. Ziel dieser Arbeit ist es, das System auf Wunsch der Firma durch ein neues zu ersetzen, um so die Überwachung zu verbessern und aktuellere Software zu verwenden. Nach einer Untersuchung des vorherigen Systems werden Prioritäten festgelegt, welche die spätere Nutzung, Instandhaltung und Erweiterung des neuen Systems erleichtern sollen. Darauf folgen die Planung seiner Architektur, die Auswahl und Implementierung der Software und schließlich das Erzeugen einer einfachen Dokumentation. Der resultierende Telemetriestack ist funktionstüchtig und erfüllt die Vorstellungen der Firma. Dennoch weist er einige Probleme, wie beispielsweise eine hohe CPU Belastung auf, welche zusammen mit Möglichkeiten der Verbesserung und Erweiterung abschließend betrachtet werden. KW - Telemetrie KW - Distributed Tracing KW - Microservices KW - Grafana KW - OpenTelemetry KW - Telemetrie KW - Mikroservice Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-29418 CY - Brandenburg an der Havel ER - TY - THES A1 - Blauert, Derk-Janko T1 - Bewertung des Potentials von Network Access Control (NAC) für die Netzwerksicherheit in modernen IT-Umgebungen mittels vergleichender Betrachtung der beiden Produkte PacketFence und macmon N2 - In der heutigen digitalisierten Welt spielt die Sicherheit von IT-Infrastrukturen eine entscheidende Rolle. Diese Bachelorarbeit untersucht das Potenzial von Network Access Control (NAC) als eine IT-Lösung zur Verbesserung der Netzwerksicherheit in modernen IT-Umgebungen. Dabei steht die Zugriffskontrolle von Personen und Geräten im Vordergrund. Damit soll erreicht werden, dass unautorisierter Zugriff zum Netzwerk verhindert wird. Es werden die Begrifflichkeiten, Funktionsweise und potenzielle Angriffsvektoren von NAC untersucht. Des Weiteren werden die jeweiligen Funktionen der NAC-Produkte macmon und der Open-Source Lösung PacketFence gegenübergestellt. Im praktischen Teil der Arbeit werden dann die vorgestellten Angriffsvektoren an einem Test-Netzwerk durchgeführt und analysiert. Die Arbeit zeigt, dass NAC eine wichtige Komponente in der Zugriffskontrolle für eine moderne IT-Infrastruktur ist. Während einige Angriffe auf das Test-Netzwerk abgewehrt werden konnten, war es dennoch möglich, sich als Angreifer am Netzwerk anzumelden. NAC ist ein unerlässliches Tool für größere IT-Infrastrukturen, jedoch erfordert eine korrekte Konfiguration und effektive Nutzung von NAC ein umfangreiches Wissen über die verschiedenen Aspekte und Themenbereiche der Netzwerksicherheit. N2 - In today's digitalized world, the security of IT infrastructures plays a vital role. This bachelor's thesis examines the potential of Network Access Control (NAC) as an IT solution to enhance network security in modern IT enviroments. The focus is on access control for individuals and devices. The goal is to prevent unauthorized network access. The terminology, functionality, and potential attack vectors of NAC are explored. Furthermore, the respective functions of the NAC products macmon and the open- source solution PacketFence are compared. In the practical part of the thesis, the introduced attack vectors are tested on a lab network and analyzed. The study shows that NAC is a crucial component in access control for modern IT infrastructure. While some attacks on the test network were successfully prevented, it was still possible for an attacker to gain access to the network. NAC is an indispensable tool for larger IT infrastructures. However proper configuration and effective use of NAC require extensive knowledge of the various aspects and topics of network security. KW - Informationssicherheit KW - Datenverarbeitungssystem KW - Computersicherheit Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-29514 PB - Technische Hochschule Brandenburg CY - Brandenburg an der Havel ER - TY - RPRT A1 - Schugardt, Alexander T1 - Untersuchung der Rotorfestigkeit von permanenterregten Synchronmaschinen mit vergrabenen Magneten N2 - Diese Projektarbeit behandelt die mechanische Simulation der Rotoren von permanenterregten Synchronmaschinen für den Festigkeitsnachweis. Hierzu wird die Finite-Elemente-Methode mit dem Programm CalculiX verwendet. Als Beispiel wird der Elektromotor des Toyota Prius II im Detail betrachtet. Hierbei werden die unterschiedlichen Lasten modelliert, dazu zählen neben der Zentrifugalkraft auch der Innendruck durch eine Presspassung sowie die elektromagnetischen Kräfte. Für die Modellierung von Kräften auf der Rotoroberfläche wird eine Methodik zur Umsetzung in CalculiX entwickelt und anhand eines Beispielmodells demonstriert. Der angestrebte Festigkeitsnachweis kann im Rahmen dieser Arbeit erbracht werden. Weiterhin wird gezeigt, dass der Einfluss der elektromagnetischen Kräfte im Arbeitspunkt mit der höchsten Drehzahl sehr gering ausfällt. Insgesamt bietet diese Arbeit die Grundlagen für mechanische Modellierungen von Rotoren unter Berücksichtigung aller Kräfte. Dies kann direkt auf andere Elektromotoren angewendet werden. KW - Rotor KW - Finite-Elemente-Methode KW - Elektromotor Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-29610 PB - Technische Hochschule Brandenburg CY - Brandenburg an der Havel ER - TY - THES A1 - Kenfack, Divine Leopold T1 - Erhöhung der Phishing-Resistenz von Anmeldeverfahren durch Einsatz von FIDO2 und Passkey N2 - In dieser Forschung wird es gezeigt, wie sicher und benutzerfreundlich eine Authentifizierung mit Passkey/FIDO2 auf Ebene des Web-Browsers ist, im Vergleich zu einer Authentifizierung mit einem starken Passwort oder eine Authentifizierung aus einer Kombination von einem Passwort und einer Zwei-Faktor-Authentifizierung. KW - Authentifizierung KW - Computersicherheit KW - Phishing Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-29688 PB - Technische Hochschule Brandenburg CY - Brandenburg an der Havel ER - TY - CHAP A1 - Seyerlein-Klug, Annegrit A1 - Adler, Rasmus ED - Wahlster, Wolfgang ED - Winterhalter, Christoph T1 - 4.2.: Sicherheit T2 - Deutsche Normungsroadmap Künstliche Intelligenz Y1 - 2023 SP - 105 EP - 120 PB - DKE - Deutsche Kommission Elektrotechnik Elektronik Informationstechnik in DIN und VDE CY - Berlin/Offenbach am Main ET - 2 ER - TY - JOUR A1 - Uhl, Roland T1 - Charakterisierung des Erwartungswertes am Graphen der Verteilungsfunktion N2 - Der Erwartungswert einer Zufallsgröße kann generell am Graphen ihrer Verteilungsfunktion durch eine naheliegende Gleichheit zweier Flächeninhalte festgelegt werden. Äquivalent dazu lässt er sich mit zwei uneigentlichen Riemann-Integralen darstellen. Davon ausgehend werden die Tschebyschow-Ungleichung und ihre Modifikation mit strikten Ungleichheitszeichen hergeleitet. KW - Erwartungswert KW - Verteilungsfunktion KW - Čebyšev-Ungleichung KW - Wahrscheinlichkeitsrechnung KW - Tschebyschow-Ungleichung KW - Zufallsgröße Y1 - 2023 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:522-opus4-29862 PB - Technische Hochschule Brandenburg CY - Brandenburg an der Havel ER - TY - CHAP A1 - Grunwald, Guido A1 - Schwill, Jürgen A1 - Sassenberg, Anne-Marie T1 - How to Choose the Fitting Partner in Sustainability Sponsorship? A Decision Model Integrating Multiple Fit Dimensions T2 - Konferenz: 2021 AMS Virtual Annual Conference and World Marketing Congress, 2022/ Band: Celebrating the Past and Future of Marketing and Discovery with Social Impact 2021 AMS Virtual Annual Conference and World Marketing Congress Y1 - 2023 SN - 978-3-030-95345-4 U6 - https://doi.org/10.1007/978-3-030-95346-1_157 SP - 465 EP - 477 PB - Springer Cham ER - TY - JOUR A1 - Maurer, Robert A1 - Eifert, Felix Friedrich A1 - Annan, Tarek T1 - Remote Work in Kooperationsprojekten - Fluch oder Segen?! JF - Mittelstand-Digital Magazin - Wissenschaft trifft Praxis N2 - Der vorliegende Beitrag befasst sich mit den Herausforderungen, die im Rahmen von Remote Work in Kooperationen bezüglich der Informations- und IT-Sicherheit bestehen, insbesondere im Hinblick auf den sicheren Datenaustausch. Des Weiteren wird die Wichtigkeit einer ganzheitlichen Sicht von IT-Governance-, Risiko- und Compliance-Management in Verbünden kleiner und mittlerer Unternehmen (KMU) behandelt. Weiterhin wird aufgezeigt, was bei der informationstechnischen Absicherung von Kooperationen und IT-Konsortien beachtet werden sollte. Y1 - 2023 SN - 2198-8544 SN - 2198-9362 IS - 19/9 SP - 15 EP - 20 PB - Begleitforschung Mittelstand-Digital WIK GmbH ER - TY - GEN A1 - Das, Atanu A1 - Chaurasia, Prashtan Kumar A1 - Mandal, Gopi K. A1 - Goecke, Sven-Frithjof A1 - De, Amitava T1 - 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" N2 - 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" Y1 - 2023 ER - TY - JOUR A1 - Das, Atanu A1 - Chaurasia, Prashtan Kumar A1 - Mandal, Gopi K. A1 - Goecke, Sven-Frithjof A1 - De, Amitava T1 - Analytical estimation of thermomechanical distortion and interface layer thickness for gas metal arc lap joining of dissimilar sheets JF - Welding in the World Y1 - 2023 U6 - https://doi.org/10.1007/s40194-01426-x SN - 432288 IS - 76/2023 SP - 33 EP - 49 PB - Springer Link ER - TY - JOUR A1 - Chaurasia, Prashtan Kumar A1 - Goecke, Sven-Frithjof A1 - De, Amitava T1 - Monitoring melt pool asymmetry in gas metal arc-directed energy deposition JF - Science and Technology of Welding and Joining Y1 - 2023 U6 - https://doi.org/10.1080/13621718.2023.2168933 SN - 1362-1718 (PRINT) IS - Augabe 5/ Band 28 SP - 424 EP - 432 PB - Taylor and Fracis ER - TY - JOUR A1 - Chaurasia, Prashant Kumar A1 - Goecke, Sven Frithjof A1 - De, Amitava T1 - Towards real-time monitoring of metal transfer and melt pool temperature field in gas metal arc directed energy deposition JF - Welding in the World N2 - Large three-dimensional metallic parts can be printed layer-by-layer using gas metal arc directed energy deposition (GMA-DED) process at a high deposition rate and with little or no material wastage. Fast responsive real-time monitoring of GMA-DED process signatures and their transient variations is required for printing of dimensionally accurate and structurally sound parts. A systematic experimental investigation is presented here on multi-layer GMA-DED with two different scanning strategies using a high strength low alloy (HSLA) filler wire. The dynamic metal transfer, melt pool temperature field and its longitudinal cross-section, and arc voltage and current are monitored synchronously. The transient arc heat input and the melt pool solidification cooling rate are estimated from the monitored signals. The layer-wise variations of the melt pool dimension, surface temperature profile, thermal cycles, and solidification cooling rate are examined for different scanning strategies. It is comprehended that the part defects can be minimized, and the mass production of zero-defect parts can be achieved in GMA-DED process with synchronized monitoring and assessment of the real-time process signatures. Y1 - 2023 UR - https://link.springer.com/article/10.1007/s40194-023-01534-2 U6 - https://doi.org/https://doi.org/10.1007/s40194-023-01534-2 IS - 67 SP - 1781 EP - 1791 PB - Springer Link ER - TY - JOUR A1 - Revina, Aleksandra A1 - Aksu, Ünal T1 - An approach for analyzing business process execution complexity based on textual data and event log JF - Information Systems N2 - With the advent of digital transformation, organizations increasingly rely on various information systems to support their business processes (BPs). Recorded data, including textual data and event log, expand exponentially, complicating decision-making and posing new challenges for BP complexity analysis in Business Process Management (BPM). Herein, Process Mining (PM) serves to derive insights based on historic BP execution data, called event log. However, in PM, textual data is often neglected or limited to BP descriptions. Therefore, in this study, we propose a novel approach for analyzing BP execution complexity by combining textual data serving as an input at the BP start and event log. The approach is aimed at studying the connection between complexities obtained from these two data types. For textual data-based complexity, the approach employs a set of linguistic features. In our previous work, we have explored the design of linguistic features favorable for BP execution complexity prediction. Accordingly, we adapt and incorporate them into the proposed approach. Using these features, various machine learning techniques are applied to predict textual data-based complexity. Moreover, in this prediction, we show the adequacy of our linguistic features, which outperformed the linguistic features of a widely-used text analysis technique. To calculate event log-based complexity, the event log and relevant complexity metrics are used. Afterward, a correlation analysis of two complexities and an analysis of the significant differences in correlations are performed. The results serve to derive recommendations and insights for BP improvement. We apply the approach in the IT ticket handling process of the IT department of an academic institution. Our findings show that the suggested approach enables a comprehensive identification of BP redesign and improvement opportunities. Y1 - 2023 UR - https://www.sciencedirect.com/science/article/pii/S0306437923000200?via%3Dihub U6 - https://doi.org/10.1016/j.is.2023.102184 IS - 114 PB - Elsevier ER - TY - CHAP A1 - Revina, Aleksandra A1 - Rizun, Nina A1 - Aksu, Ünal T1 - Towards a Framework for Context Awareness Based on Textual Process Data: Case Study Insights T2 - Lecture Notes in Business Information Processing N2 - Context awareness is critical for the successful execution of processes. In the abundance of business process management (BPM) research, frameworks exclusively devoted to extracting context from textual process data are scarce. With the deluge of textual data and its increasing value for organizations, it becomes essential to employ relevant text analytics techniques to increase the awareness of process workers, which is important for process execution. The present paper addresses this demand by developing a framework for context awareness based on process executions-related textual data using a well-established layered BPM context model. This framework combines and maps various text analytics techniques to the layers of the context model, aiming to increase the context awareness of process workers and facilitate informed decision-making. The framework is applied in an IT ticket processing case study. The findings show that contextual information obtained using our framework enriches the awareness of process workers regarding the process instance urgency, complexity, and upcoming tasks and assists in making decisions in terms of these aspects. Y1 - 2023 SN - 978-3-031-26885-4 (Print) 978-3-031-26886-1 (online) U6 - https://doi.org/https://doi.org/10.1007/978-3-031-26886-1_2 IS - 466 PB - Springer Cham ER - TY - BOOK A1 - Tanski, Joachim T1 - Compliance-Management N2 - Dieses Buch bietet eine komprimierte und praxisorientierte Einführung in die Grundlagen und Anforderungen eines Compliance-Managements, um den Leser schnell mit aktuellen und zentralen Regelungen vertraut zu machen. Dabei wird auf gesetzliche und regulatorische Bestimmungen ebenso eingegangen wie auf betriebswirtschaftliche Notwendigkeiten, um Mitarbeitende und Unternehmen vor den schwerwiegenden Folgen von Compliance-Verstößen zu schützen. Y1 - 2023 UR - https://link.springer.com/book/10.1007/978-3-658-40682-0 SN - 978-3-658-40681-3 (Softcover) 978-3-658-40682-0 (e-Book) U6 - https://doi.org/https://doi.org/10.1007/978-3-658-40682-0 PB - Springer Gabler Wiesbaden ET - 1 ER - TY - CHAP A1 - Tanski, Joachim T1 - Limitierende Faktoren T2 - Compliance-Management N2 - Wie bei allen Risiken gibt es auch bei Compliance-Risiken kein Null-Risiko. Man wird in der Praxis noch nicht einmal in die unmittelbare Nähe einer Null kommen. Ein Null-Compliance-Risiko ist auch deshalb nicht erreichbar, weil sich ständig neue Risikofelder auftun. So beispielsweise durch Änderung von Geschäftsmodellen oder Vertriebswegen oder durch neue rechtliche Rahmenbedingen. Y1 - 2023 UR - https://link.springer.com/chapter/10.1007/978-3-658-40682-0_4 U6 - https://doi.org/10.1007/978-3-658-40682-0_4 SP - 49 EP - 49 PB - Springer ebooks ER - TY - CHAP A1 - Burger-Menzel, Bettina T1 - Wirtschaftsförderung und E-Governance: Von der Resilienz zur Transformation? T2 - Wirtschaftsförderung in der Krise N2 - Unsere Welt verändert sich in unterschiedlichen Tempi und Verwerfungstiefen. Dies ist das einzig Verlässliche für Wirtschaft und Gesellschaft. Zum einen zählt die kreative Zerstörung zum ‚Markenkern‘ marktwirtschaftlicher Systeme. Die Wirtschaftsakteure stehen dadurch an ihrem jeweiligen Standort unter einer Art (produktivem) Dauerstress. Es gibt Gewinner und Verlierer, weil Wettbewerber unterschiedlich erfolgreich kostensenkende Rationalisierungen, technischen Fortschritt und die Erschließung neuer (globaler) Märkte realisieren. Der damit einhergehende Strukturwandel gilt als wirtschaftssystemischer Normalzustand. Zum anderen gibt es Krisen. Und auch ‚unter Schock‘ (re-)agieren Akteure ungleich, wie die Corona-Pandemie oder abrupte Veränderungen durch die Finanzkrise zeigen. Einige Akteure und Standorte bleiben mit ihrem jeweiligen Profil und Potenzial (weiterhin) produktiv widerstandsfähig. Für andere verschärfen sich der wirtschaftliche Niedergang und dessen Folgen für die Arbeitsmärkte und Lebensqualität der Betroffenen. Regionale Wirtschaftsförderung unterstützt, dass sich die Wirtschaftsstrukturen an einem Standort überlebensfähig ausrichten. Doch kann sie auch beim Umgang mit Krisen einen Mehrwert erzielen und zählt dies überhaupt zu ihrem Regelauftrag? Und welche Rolle spielt die Digitalisierung? Der Beitrag stellt den sachlogischen Zusammenhang zwischen diesen Teilfragen her und ordnet neuere Ansätze ein. Zudem werden Ansatzstellen aufgezeigt, um die regionale Wirtschaftsförderung praxisorientiert weiterzuentwickeln. ‚Electronic Government‘ (E-Government) beschreibt dabei den Einsatz von Informationstechnik, Telekommunikation und Medien (ITKM) im öffentlichen Sektor, während ‚Electronic Governance‘ (E-Governance) hybride oder private Akteure miteinbezieht. Der Beitrag ist wie folgt strukturiert: Zunächst werden Schlüsselbegriffe wie Strukturpolitik und Resilienz geklärt und mit den Kontextfaktoren verknüpft, welche die Steuerungslogik von Wirtschaftsförderung bestimmen. Danach wird diskutiert, inwiefern die Wirtschaftsförderung E-Government und E-Governance nutzen kann, um Resilienz zu stärken und möglichst transformativ wirken zu können. Y1 - 2023 UR - https://link.springer.com/chapter/10.1007/978-3-658-41390-3_10 U6 - https://doi.org/10.1007/978-3-658-41390-3_10 SP - 171 EP - 196 PB - Springer Gabler CY - Wiesbaden ER - TY - CHAP A1 - Fitz, Lukas R. G. A1 - Veldyaeva, Ekaterina A1 - Teutenberg, Lukas A1 - Scheeg, Michaela A1 - Scheeg, Jochen T1 - Puzzle away the Puzzledness: Action-Design Study of an Educational Escape Room for Intervention in SMEs’ Perception towards ICT Adoption T2 - Konferenz: 57th Hawaii International Conference on System Sciences (HICSS); Honolulu, HI, USA N2 - Digital transformation initiatives in small and medium-sized enterprises (SME) are often hampered by individual practitioners' perceptions of information and communication technology (ICT). This research employs an educational escape room (ER) game for an intervention towards informed decision-making on ICT adoption in SMEs. ER design and implementation are elaborated and consequently tested with SME practitioners, all embedded in an action-design study based on a qualitative research methodology. The result highlights a trade-off between creating immersive game experiences and achieving learning objectives. Still, the outcome implies an impact on players' perception of ICT integrated in the ER. The findings contribute to the emerging field of serious games for learning and shed light on the potential of game-based interventions for SMEs. Y1 - 2023 UR - https://hdl.handle.net/10125/107027 SN - 978-0-9981331-7-1 SP - 5347 EP - 5356 ER - TY - CHAP A1 - Kramann, Guido T1 - AOGscript – Design of a Stand-Alone Scripting Language for the Generation of Music. Proceedings of the International Symposium on Ubiquitous Music, 2023 T2 - Konferenz: 13th International Symposium on Ubiquitous Music 2023 (Ubimus23) , Ulster University, Derry~Londonderry, Northern Ireland, 2-4 November, 2023 N2 - Ubiquitous Music is an interdisciplinary research area that combines methodologies from music, computer science, education, creativity studies, human sciences and engineering. The Ubiumus 2023 symposium, held at Ulster University and North West Regional College in Derry~Londonderry, Northern Ireland, included contributions on the following topics: Rapid Prototyping and Live Environments Ecological Approaches to Ubiquitous Music Ubiquitous Music Creative Practices, Tools and Influences The symposium also included a number of artistic contributions and workshops, which are also discussed in the proceedings volume. A number of events (including all paper presentations, an invited lecture, a panel discussion, and a keynote and associated performance) were also documented via video, with a link available in this Proceedings volume. Y1 - 2023 UR - https://zenodo.org/records/10670220 SN - 978-65-00-85069-7 U6 - https://doi.org/10.5281/zenodo.10670220 SP - 95 EP - 109 PB - Zenodo ER - TY - INPR A1 - Tarassow, Artur T1 - The potential of LLMs for coding with low-resource and domain-specific programming languages N2 - This paper presents a study on the feasibility of using large language models (LLM) for coding with low-resource and domain-specific programming languages that typically lack the amount of data required for effective LLM processing techniques. This study focuses on the econometric scripting language named hansl of the open-source software gretl and employs a proprietary LLM based on GPT-3.5. Our findings suggest that LLMs can be a useful tool for writing, understanding, improving, and documenting gretl code, which includes generating descriptive docstrings for functions and providing precise explanations for abstract and poorly documented econometric code. While the LLM showcased promoting docstring-to-code translation capability, we also identify some limitations, such as its inability to improve certain sections of code and to write accurate unit tests. This study is a step towards leveraging the power of LLMs to facilitate software development in low-resource programming languages and ultimately to lower barriers to entry for their adoption. Y1 - 2023 U6 - https://doi.org/10.48550/arXiv.2307.13018 SP - 1 EP - 27 ER - TY - CHAP A1 - Guido, Kramann T1 - AOGscript, Generative Code as Conceptual Artwork: Giving Space to Astonishment. Proceedings of xCoAx 2023 T2 - Konferenz: xCoAx 2023 11th Conference on Computation, Communication, Aesthetics & X Y1 - 2023 UR - https://2023.xcoax.org/xcoax2023.pdf SN - 978-989-9049-52-9 U6 - https://doi.org/10.34626/xcoax.2023 SP - 401 EP - 408 PB - i2ADS CY - Porto, Portugal ER - TY - INPR A1 - Baeva, Gergana A1 - Brunner, Robert A1 - Elmas, Filiz A1 - Fresz, Benjamin A1 - Fuß, Christine A1 - Heß, Claudia A1 - Kellmeyer, Philipp A1 - Mahner, Malin A1 - Paulheim, Heiko A1 - Poretschkin, Maximilian A1 - Puntschuh, Michael A1 - Seyerlein-Klug, Annegrit T1 - Welche Zertifizierung ist hilfreich für Verbraucher*innen? BT - Acht Thesen zu wirksamen freiwilligen Zertifikaten von KI-Produkten N2 - In diesem Whitepaper fokussieren wir uns auf die KI-Verordnung nicht erfasste freiwillige Zertifizierung. Dabei stehen die Interessen und Sichtweisen der Verbraucher*innen im Vordergrund. Als Verbraucher*innen betrachten wir nicht nur die unmittelbaren Nutzer*innen von KI-Systemen, sondern auch Privatpersonen, die indirekt von KI-Ergebnissen betroffen sein können. Zudem berücksichtigen wir Menschen in der Rolle als souveräne Datensubjekte, deren personenbezogene Daten in die Entwicklung von KI-Systemen einfließen. Dieses breite Verständnis des Verbraucher*innenbegriffs entspricht dem Selbstverständnis des Zentrums für vertrauenswürdige Künstliche Intelligenz (ZVKI). Wir stellen Thesen auf, wie freiwillige Zertifizierungen von KI-Systemen für Verbraucher*innen nützlich sein können. Die im Verlauf vorgestellten und begründeten acht Thesen wurden in einer Reihe von interdisziplinären Workshops erarbeitet. Dabei identifizierten wir Herausforderungen einer KI-Zertifizierung aus Verbraucher*innensicht und präzisierten diese iterativ. Die Gruppendiskussionen dienten als Grundlage dieses Whitepapers und bauten auf Erkenntnissen der Fach-Arbeitsgruppe „KI Zertifizierung“ des ZVKI auf. Alle Co-Autor*innen waren an der Erstellung des finalen Texts beteiligt. Die aufgestellten Thesen thematisieren grundlegende Anforderungen an eine KI-Zertifizierung aus einer übergeordneten Perspektive, unabhängig von den spezifischen Details einer KI-Anwendung. Somit liefern sie keine Aussagen zu konkreten Inhalten der Zertifizierung. Detaillierte Empfehlungen setzen eine umfassende Analyse von Einsatzfällen voraus, die in diesem Rahmen nicht geleistet werden kann. Y1 - 2023 U6 - https://doi.org/10.24406/publica-2132 ER - TY - RPRT A1 - Olschewski, Detlef A1 - Bluhm, André A1 - Firnkorn, Joerg A1 - Lucieri, Adriano A1 - Palacio, Sebastian A1 - Streppel, Yeji A1 - Zednik, Carlos A1 - Görge, Rebekka A1 - Poretschkin, Maximilian A1 - Becker, Nikolas A1 - Zielke, Thomas A1 - Kruschel, Christian A1 - Neumann-Brosig, Matthias A1 - Bäuerle, Stephen A1 - Eifert, Marton A1 - López, Erik Martori A1 - Assion, Felix A1 - Seyerlein-Klug, Annegrit A1 - Schmid, Ute A1 - Haufe, Stefan A1 - Gautier, Antoine A1 - Bieringer, Lukas A1 - Besold, Tarek R. A1 - Cremers, Armin B. T1 - DIN SPEC 92001-3 Artificial Intelligence - Life Cycle Processes and Quality Requirements - Part 3: Explainability N2 - DIN SPEC 92001-3 Artificial Intelligence – Life Cycle Processes and Quality Requirements. Artificial Intelligence has become a game-changer, but its impact must be approached responsibly. This is the third document in a series, and it aims to ensure that AI systems are developed, deployed, and used efficiently, responsibly, and in a trustworthy way. It focuses on “Explainability” – the ability to understand how AI makes decisions. This DIN SPEC 92001-3 provides a domain-independent guide on promoting explainability throughout the AI system’s life cycle. It tackles “opacity”, describing sources and effects of opacity in AI and how explanations can mitigate them. The goal is to foster a better understanding and effective use of Explainable AI across various applications, fostering principles of trust and transparency in AI-based systems. This DIN SPEC is the result of „Zertifizierung von Standard-KI-Anwendungen (Zertifizierte KI project)“ https://www.zertifizierte-ki.de/. The publication is available for free at Beuth Verlag GmbH www.beuth.de - plus the search for "DIN SPEC 92001-3" Y1 - 2023 PB - Beuth Verlag ER - TY - CHAP A1 - Veldyaeva, Ekaterina A1 - Fitz, Lukas R. G. A1 - Scheeg, Jochen T1 - Developing Digital Competencies in Small and Medium-Sized Enterprises Through Microlearning Applications: A Research Agenda T2 - Konferenz: Perspectives in Business Informatics Research 22nd International Conference on Business Informatics Research, BIR 2023, Ascoli Piceno, Italy, September 13–15, 2023, Proceedings N2 - This article presents a research outline on the use of microlearning applications to develop digital competencies in Small and Medium-sized Enter-prises (SMEs). The digital transformation of businesses has become essential for their survival, and SMEs need to develop digital competencies (DC) to remain competitive in the market. Microlearning (ML), a form of learning that involves small, bite-sized learning modules, has been gaining popularity in recent years as a way to efficiently and effectively develop skills. Through a semi-systematic literature review approach, our study examines prevalent knowledge in the area of ML and DC and discusses interrelations. As a result, we propose a research roadmap consisting of six research questions targeting four dimensions of ML for DC development in SMEs: 1) context, 2) formats, 3) reward system, and 4) complexity level. Y1 - 2023 U6 - https://doi.org/10.1007/978-3-031-43126-5_7 SP - 41 EP - 58 ER - TY - CHAP A1 - Lemke, Claudia A1 - Meister, Vera A1 - Weßels, Doris T1 - Kritische Reflexion und Handlungsansätze zum Einsatz Generativer KI in der Wirtschaftsinformatik-Lehre T2 - 36. Jahrestagung des Arbeitskreises Wirtschaftsinformatik (AKWI) N2 - Die digitalen Technologien verändern die Gesellschaft, auch die akademischen Wissen-schaftssysteme sind betroffen. Das erfordert verstärkte Überlegungen zum Einsatz solcher Techno-logien und zu ihrem Einfluss auf Lehre und Studium. Der Beitrag fokussiert die Relevanz von AI-Literacy im Kontext des Einsatzes Generativer KI aus zwei Perspektiven. Zunächst wird die Wahr-nehmung und Bereitschaft von Studierenden, KI-basierte Tools zur automatisierten Textgenerierung zu nutzen, empirisch untersucht. Im zweiten Teil wird ein auf Ko-Kreation ausgerichtetes Lehrkon-zept modelliert, das neben fachlichen auch AI-Literacy-Kompetenzen adressiert. Die Ergebnisse führen zu Handlungsansätzen, insbesondere für Wirtschaftsinformatik-Studiengänge. Y1 - 2023 ER - TY - CHAP A1 - Markgraf, Klaus A1 - Dietrich, Benjamin A1 - Müller, Katja A1 - Flassig, Robert J A1 - Flassig, Peter Michael T1 - FINEconcepts - Wissenstransfer und Energiesystemoptimierung mithilfe des digitalen Zwillings T2 - Konferenz: NWK 2023, HS Harz N2 - Climate change, but also geopolitical circumstances, are moving topics such as energy efficiency and renewable energies more and more into the focus of the population, economy , and politics. As a result, the will to optimize new and existing energy systems extends from private individuals to companies and even entire communities. This work describes the development and usage of a new software called FINEconcepts which creates a digital twin of an energy system. This virtual model can then be used to optimize the energy system based on annual costs, CO2 emissions or other relevant criteria such as self-sufficiency. Because all system components, which include renewable technologies as well, can be added as a building block with chosen but changeable parameters, the software allows the user to explore and awaken interest and understanding of technologies that were previously considered too costly, irrelevant, or unrealistic. Implemented projects in small and large companies as well as in residential areas did prove, that the usage of FINEconcepts leads not only to more efficient energy systems by increasing the use of renewable energy, but also increased knowledge and understanding in terms of energy. Besides economics, ecology and security, understanding is an equally important factor in achieving a sustainable energy supply. Y1 - 2023 SP - 428 EP - 435 ER - TY - BOOK A1 - Brasche, Ulrich T1 - Climate justice and the Global South - The road to solving climate change N2 - Climate will be decided in the global south Mankind is on a dangerous journey in the Anthropocene. Arriving at a good life for all within planetary boundaries is still possible. But at present, the journey is more likely to lead to an overheating of the Earth. Health and life would then be massively endangered for many living beings - including humans. A positive development is still possible, but it requires a global transformation of the economy and society. The prosperous states and companies are well advised, to respect the interests of the global south and future generations, and to use wisely the considerable financial resources in a cooperation of equals. This book • highlights past carbon emissions and their consequences, • reflects on the main drivers of future emissions, • discusses strategies like green growth, de-growth, • presents market-based instruments like carbon trading and carbon border adjustment and • emphasises the key role played by the emerging countries of the global south. It is not only a matter of justice but furthermore in the interest of the rich countries in the global north to contribute massively to financing a "green leapfrogging" of the global south into a carbon-free prosperity. Failing to achieve it will bring unspeakable losses and suffering to many people all over the planet. Y1 - 2023 SN - Print 9783758302381 SN - Ebook 9783758398162 PB - Books on Demand ER - TY - CHAP A1 - Fitz, Lukas R. G. A1 - Scheeg, Jochen T1 - Small Businesses Participating in Digital Platform Ecosystems - A Descriptive Literature Review T2 - Digital Transformation. PLAIS EuroSymposium 2023. Lecture Notes in Business Information Processing N2 - The emergence of digital multi-sided platforms has disrupted day-to-day business in many industries. Nowadays, many small businesses participate in digital platform (DP) ecosystems and act as value creators or complementors. Investigating the small business perspective does not have a rich tradition in platform research yet. In response, this paper presents a systematic literature review (SLR) analyzing the thematic points of focus and highlighting new avenues for information systems and small business research. We find that objectives related to digital transformation, digital strategy- and business model-development, and DP adoption are fundamental topics in the conjunction of small business and DP ecosystems. Based on the findings, an agenda for future research is developed, including propositions for practice-oriented and human-centered approaches fostering sustilience, innovation capabilities and digital leadership competencies in small businesses facing DP ecosystem participation. Y1 - 2023 U6 - https://doi.org/10.1007/978-3-031-43590-4_3 ER - TY - CHAP A1 - Fitz, Lukas R. G. A1 - Scheeg, Jochen T1 - What is Digital about Digital Innovation? An Ontological Discussion of Digitality T2 - Konferenz: 29th Americas Conference on Information Systems N2 - "Digital" is a popular adjective for concepts related to electronic, computerized or networked processes in current research and practice. From an ontological-theoretical perspective, the prevalence of digital things triggers the question, how Digitality itself could be conceptualized. This article studies the ontology of Digitality and consequently discusses Digital Innovation (DI) from a new perspective. First, literature on Digitality is analyzed. Based on the findings, an ontological conceptual framework of Digitality (OCFD) is proposed. It describes four layers of Digitality: physical foundations, virtuality, digital culture and world, and digital metaphysics. From a human perspective, requirements to grasp and embody Digitality are highlighted, as well as the expansion of reality. Finally, Digitality is discussed as a paradigm of DI and exemplary digital phenomena are projected onto the OCFD. This paper contributes to DI research and practice through theory-building towards a better understanding of ontological characteristics and practical implications of Digitality in DI. Y1 - 2023 PB - Panama City, Panama ER - TY - CHAP A1 - Mingione, Michela A1 - Kristal, Samuel T1 - Brand value co-creation: field emergence, applications, measurement and future research directions T2 - A Research Agenda for Brand Management in a New Era of Consumerism Y1 - 2023 U6 - https://doi.org/10.4337/9781803925516.00013 SP - 89 EP - 106 PB - Edward Elgar Publishing CY - Cheltenham, UK ER - TY - CHAP A1 - Levina, Olga A1 - Mattern, Saskia T1 - Ethical and Legal Analysis of Machine Learning Based Systems: A Scenario Analysis of a Food Recommender System T2 - Recommender Systems: Legal and Ethical Issues N2 - 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. Y1 - 2023 SN - 978-3-031-34806-8 SN - 978-3-031-34804-4 U6 - https://doi.org/10.1007/978-3-031-34804-4_9 SP - 165 EP - 185 ER - TY - BOOK A1 - Brasche, Ulrich T1 - Auf dem Weg zu mehr Klimagerechtigkeit Im Bündnis mit dem Globalen Süden Widerstände überwinden N2 - Die Menschen sind im Anthropozän auf einer gefährlichen Reise. Das Ziel steht noch nicht fest. Die Ankunft in einem guten Leben für alle innerhalb planetarer Grenzen ist immer noch möglich. Aber zurzeit führt die Reise eher zu einer Überhitzung der Erde. Gesundheit und Leben wären dann für viele Lebewesen – auch für den Menschen – massiv gefährdet. Das Buch behandelt die Fragen: • Wie sind wir in diese Lage geraten? • In welcher Richtung können Auswege liegen? • Welche Hindernisse sind zu überwinden? Es werden Strategien abgewogen und einige überraschende Bündnispartner identifiziert. Geschickt gestaltete Märkte können helfen, die Erderwärmung aufzuhalten. Nur in einer gleicheren und gerechteren Welt könnten alle Menschen gut, aber bescheidener leben. Die Alternative dazu wäre eine übererhitzte, gefährliche Welt. Eine gute Entwicklung ist noch möglich. Sie erfordert eine globale Transformation von Wirtschaft und Gesellschaft. Die wohlhabenden Staaten sind gut beraten, die Interessen des „Globalen Südens“ und der künftigen Generationen zu respektieren – auch durch den klugen Einsatz erheblicher Finanzmittel und eine Kooperation auf Augenhöhe. Y1 - 2023 SN - 978-3-98726-045-2 U6 - https://doi.org/10.14512/9783987262746 PB - oekom-Verlag CY - München ER - TY - CHAP A1 - Levina, Olga T1 - Operationalizing Ethics for Information Systems Design - A Tool for Ethical Software T2 - Konferenz: Twenty-ninth Americas Conference on Information Systems (AMCIS), Panama, 2023 N2 - 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. Y1 - 2023 UR - https://aisel.aisnet.org/amcis2023/sig_phil/sig_phil/5 ER - TY - JOUR A1 - Vega, Catherine Perez A1 - Jechow, Andreas A1 - James A., Campbell A1 - Zielinska-Dabkowska, Karolina M. A1 - Hoelker, Franz T1 - Light pollution from illuminated bridges as a potential barrier for migrating fish-Linking measurements with a proposal for a conceptual model JF - Basic and Applied Ecology N2 - 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. Y1 - 2023 UR - https://www.sciencedirect.com/science/article/pii/S1439179123000658?via%3Dihub U6 - https://doi.org/10.1016/j.baae.2023.11.001 SN - 1618-0089 VL - 74 SP - 1 EP - 12 PB - Elsevier ER - TY - JOUR A1 - Vollmer, Michael T1 - So weit das Auge trägt JF - Physik in unserer Zeit N2 - Sichtweiten in der Atmosphäre reichen von wenigen Metern im Nebel bis zu einigen hundert Kilometern bei extrem guten Fernsichtbedingungen. Die zugrundeliegende Physik geht vom Wahrnehmungskontrast aus. Dieser ändert sich mit der Entfernung entlang der Sichtlinie zwischen Objekt und Auge aufgrund von Lichtstreuung und Absorption an den Bestandteilen der Atmosphäre. Dazu kommt bei der Fernsicht die Refraktion, die es erlaubt, auch über den durch die Kugelform der Erde geometrisch bedingten Horizont hinaus zu sehen. Y1 - 2023 UR - https://onlinelibrary.wiley.com/doi/pdfdirect/10.1002/piuz.202301675 U6 - https://doi.org/10.1002/piuz.202301675 SN - 1521-3943 VL - 54 IS - 5 SP - 222 EP - 230 PB - Wiley ER - TY - INPR A1 - Wendzel, Steffen A1 - Caviglione, Luca A1 - Mazurczyk, Wojciech A1 - Mileva, Aleksandra A1 - Dittmann, Jana A1 - Krätzer, Christian A1 - Lamshöft, Kevin A1 - Vielhauer, Claus A1 - Hartmann, Laura A1 - Keller, Jörg A1 - Neubert, Tom A1 - Zillien, Sebastian T1 - A Generic Taxonomy for Steganography Methods N2 - 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.

Y1 - 2023 U6 - https://doi.org/10.36227/techrxiv.20215373.v1 ER - TY - GEN A1 - Stockhausen, Pablo A1 - Johannsen, Andreas A1 - Maurer, Robert T1 - Machine-Learning Verfahren für eine nachhaltige Letzte-Meile-Logistik N2 - Dieser Beitrag entwickelt ein Konzept zur praktischen Umsetzung eines Machine- Learning Verfahrens zum Lösen 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 überzeugt dabei in der Laufzeit und dem Automatismus. Es konnte festgestellt werden, dass eine Verwendung von Lernenden-Systemen für das Vehicle Routing Problem sich bei nur bei einem größeren Stoppvolumen und einer erweiterten IT-Infrastruktur empfiehlt. Y1 - 2023 ER - TY - CHAP A1 - Stockhausen, Pablo A1 - Johannsen, Andreas A1 - Maurer, Robert ED - Krupka, Daniel ED - Federrath, Hannes ED - Demmler, Daniel T1 - Konzeption eines Machine-Learnings-Verfahrens zum Lösen von Green Vehicle Routing Problemen T2 - Konferenz: Informatik 2022, Lecture Notes in Informatics (LNI), Bonn, 2022/ Konferenzband: Informatik 2022 Fachtagung vom 26.-30. September 2022, Hamburg/ Band: P-326 Y1 - 2023 SN - 978-3-88579-720-3 SP - 885 EP - 897 PB - Gesellschaft für Informatik CY - Bonn ER - TY - JOUR A1 - Braubach, Lars A1 - Jander, Kai T1 - 1. Introduction JF - International Journal of Parallel, Emergent and Distributed Systems Y1 - 2023 U6 - https://doi.org/10.1080/17445760.2023.2251386 SN - 1744-5779 VL - 38 IS - 6 SP - 459 EP - 460 PB - Taylor & Francis ER - TY - JOUR A1 - Hasche, Eberhard A1 - Karaschewski, Oliver A1 - Creutzburg, Reiner T1 - iPhone12 imagery in scene-referred computer graphics pipelines JF - Electronic Imaging N2 - With the release of the Apple iPhone 12 Pro Max in 2020, various features were integrated that make it attractive as a recording device for scene-related computer graphics pipelines. The captured Apple RAW images have a much higher dynamic range than the standard 8-bit images. Since a scene-based workflow naturally has an extended dynamic range (HDR), the Apple RAW recordings can be well integrated. To correctly integrate the iPhone 12 pro Apple RAW data into a scene-related workflow, two command-line software solutions, among others, are dcraw and rawtoaces. In this paper, we concentrate on dcraw. dcraw offers the possibility to export RAW images directly to ACES2065-1. Different images recorded under different lighting conditions are examined to determine which options for the dcraw development produce the best results. Images from five different lighting situations like D65, D60, D55, D50, and 2980K, are examined. The DNG files are developed using different methods within dcraw. The values of the recorded ColorChecker24 patches are compared to reference values derived from BabelColor [1] and ACES [2]. Y1 - 2023 U6 - https://doi.org/10.2352/EI.2023.35.3.MOBMU-350 SP - 350-1 EP - 350-14 PB - Society for Imaging Science and Technology ER - TY - JOUR A1 - Jaster, Daniel A1 - Creutzburg, Reiner A1 - Hasche, Eberhard T1 - A qualitative study of LiDAR technologies and their application areas JF - Electronic Imaging N2 - In this work, the most relevant 3D LiDAR technologies and their applications in 2022 were investigated. For this purpose, applications of LiDAR systems were classified into the typical application areas "3D modeling", "smart city", "robotics", "smart automotive" and "consumer goods". The investigation has shown that neither "mechanical" LiDAR technologies, nor so-called solid-state LiDAR technologies, nor "hybrid" LiDAR technologies can be evaluated as optimal for the typical application areas. In none of the application areas could all of the elaborated requirements be met. However, the "hybrid" LiDAR technologies such as sequential MEMS LiDAR technology and sequential flash LiDAR technology proved to be among the most suitable for most typical application areas. However, other technologies also tended to be suitable for individual typical application areas. Finally, it was found that several of the LiDAR technologies investigated are currently equally suitable for some typical application areas. To evaluate the suitability, concrete LiDAR systems - of different technologies and properties - were compared with the specific requirements of exemplary applications of an application area. The results of the investigation provide an orientation as to which LiDAR technology is promising for which application area. Y1 - 2023 U6 - https://doi.org/10.2352/EI.2023.35.3.MOBMU-368 VL - 35 SP - 368-1 EP - 368-15 PB - Society for Imaging Science and Technology ER - TY - JOUR A1 - Maleki, Maniya A1 - Mohammadi, Mahdieh T1 - Velocity and pressure functions of an oscillating flow in a circular Hele-Shaw cell JF - Iranian Journal of Physics Research N2 - In this study, we have investigated the form of velocity and pressure functions of a fluid oscillating between two parallel glass sheets that form a circular Hele-Shaw cell. The flow has been considered to be radial, incompressible and laminar. The time-dependent Navier-Stokes equation has been solved in cylindrical coordinates using Fourier transform, and the oscillating flow velocity across the thickness of the cell has been obtained at different times. The flow velocity function in the unsteady state is related to the vertical component of the coordinates in the form of parabolic functions and also to the inverse of the radial component. The time dependence appears as a simple harmonic with a frequency equal to the oscillation frequency. The velocity of the flow is maximum at the middle of the cell along its height and gradually decreases from the middle towards the top or bottom plane and reaches zero. Pressure does not depend on the height and changes logarithmically with the radius. The dependence of pressure on time is also a simple harmonic with the external frequency, but it has a phase shift with respect to the velocity. Y1 - 2023 U6 - https://doi.org/10.47176/ijpr.22.1.81304 VL - 22 IS - 1 SP - 113 EP - 120 PB - Physics Society of Iran ER - TY - JOUR A1 - Lachowski, Krzysztof A1 - Hammermeister, Florian A1 - Halenz, Bastian A1 - Lieckefett, Florian A1 - Götze, Thomas A1 - Prill, Robert A1 - Becker, Roland T1 - The Patellostabilometer: A New Device for Quantification of Mediolateral Patella Displacement JF - Sensors N2 - Mediolateral patella displacement is of interest for diagnostics and clinically relevant research questions. Apart from manual testing, no standardized method is currently available. Proper quantification of patella mobility is necessary to better understand pathologies at the patellofemoral joint. Patella mobility was assessed in 25 healthy individuals using a Patellostabilometer, a new prototype instrument for quantification of the mediolateral patella displacement. The participants underwent measurements of the mediolateral displacement three times using the Patellostabilome- ter. A maximal force of 10 N was applied for patella movement. Additionally, leg length and circumference of the knee, upper- and lower-leg were measured. Lateral patella displacement of 18.27 ± 3.76 mm (range 15.85–20.64 mm, interquartile range (IQR) of 4.79) was measured. The medial patella displacement showed 24.47 ± 6.59 mm (range 19.29–29.76 mm, IQR of 10.47). The test–retest measurement error was 2.32 ± 1.76 mm (IQR of 2.38 mm), with five outliers. There was greater test–retest variability between the measurements of the medial displacement compared to the lateral one. The test–retest variability reached 7% of the patella displacement. Other parameters provided no significant correlations. Based on the natural patellofemoral mobility, a precise and clinically relevant quantification of patella mobility is allowed. Y1 - 2023 UR - https://www.mdpi.com/1424-8220/23/3/1274 U6 - https://doi.org/https://doi.org/10.3390/s23031274 IS - 23 (3) PB - MDPI ER - TY - JOUR A1 - Rizun, Nina A1 - Revina, Aleksandra A1 - Edelmann, Noella T1 - Application of Text Analytics in Public Service Co-Creation: Literature Review and Research Framework JF - DG.O 2023: The 24th Annual International Conference on Digital Government Research N2 - The public sector faces several challenges, such as a number of external and internal demands for change, citizens' dissatisfaction and frustration with public sector organizations, that need to be addressed. An alternative to the traditional top-down development of public services is co-creation of public services. Co-creation promotes collaboration between stakeholders with the aim to create better public services and achieve public values. At the same time, data analytics has been fuelled by the availability of immense amounts of textual data. Whilst both co-creation and TA have been used in the private sector, we study existing works on the application of Text Analytics (TA) techniques on text data to support public service co-creation. We systematically review 75 of the 979 papers that focus directly or indirectly on the application of TA in the context of public service development. In our review, we analyze the TA techniques, the public service they support, public value outcomes, and the co-creation phase they are used in. Our findings indicate that the TA implementation for co-creation is still in its early stages and thus still limited. Our research framework promotes the concept and stimulates the strengthening of the role of Text Analytics techniques to support public sector organisations and their use of co-creation process. From policy-makers' and public administration managers' standpoints, our findings and the proposed research framework can be used as a guideline in developing a strategy for the designing co-created and user-centred public services. Y1 - 2023 UR - https://dl.acm.org/doi/10.1145/3598469.3598471 U6 - https://doi.org/10.1145/3598469.3598471 SP - 12 EP - 22 PB - Association for Computing Machinery ER - TY - JOUR A1 - Guterding, Daniel T1 - Sparse Modeling Approach to the Arbitrage-Free Interpolation of Plain-Vanilla Option Prices and Implied Volatilities JF - Risks N2 - 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. Y1 - 2023 UR - https://www.mdpi.com/2227-9091/11/5/83 U6 - https://doi.org/https://doi.org/10.3390/risks11050083 IS - 11 (5) PB - MDPI AG ER - TY - JOUR A1 - Stannarius, Ralf A1 - Harth, Kirsten T1 - The structure of disintegrating defect clusters in smectic C freely suspended films JF - Soft Matter N2 - Disclinations or disclination clusters in smectic C freely suspended films with topological charges larger than one are unstable. They disintegrate, preferably in a spatially symmetric fashion, into single defects with individual charges of +1, which is the smallest positive topological charge allowed in polar vector fields. While the opposite process of defect annihilation is well-defined by the initial defect positions, disintegration starts from a singular state and the following scenario including the emerging regular defect patterns must be selected by specific mechanisms. We analyze experimental data and compare them with a simple model where the defect clusters adiabatically pass quasi-equilibrium solutions in one-constant approximation. It is found that the defects arrange in geometrical patterns that correspond very closely to superimposed singular defect solutions, without additional director distortions. The patterns expand by affine transformations where all distances between individual defects scale with the same time-dependent scaling factor proportional to the square-root of time. Y1 - 2023 UR - https://pubs.rsc.org/en/content/articlelanding/2023/sm/d3sm00808h U6 - https://doi.org/https://doi.org/10.1039/d3sm00808h IS - 19 SP - 6109 EP - 6115 PB - Royal Society of Chemistry ER - TY - JOUR A1 - Xu, Han-Xiang A1 - Shimizu, Makoto A1 - Guterding, Daniel A1 - Otsuki, Junya A1 - Jeschke, Harald O. T1 - Pressure evolution of electronic structure and magnetism in the layered van der Waals ferromagnet CrGeTe3 JF - Physical Review B N2 - Layered van der Waals ferromagnets, which preserve their magnetic properties down to exfoliated monolayers, are fueling an abundance of fundamental research and nanoscale device demonstration. CrGeTe3 is a prime example of this class of materials. Its temperature-pressure phase diagram features an insulator-to-metal transition and a significant increase in ferromagnetic Curie-Weiss temperatures upon entering the metallic state. We use density functional theory to understand the magnetic exchange interactions in CrGeTe3 at ambient and elevated pressures. We calculate Heisenberg exchange couplings, which provide the correct ferromagnetic ground state and explain the experimentally observed pressure dependence of magnetism in CrGeTe3. Furthermore, we combine density functional theory with dynamical mean-field theory to investigate the effects of electronic correlations and the nature of the high-pressure metallic state in CrGeTe3. Y1 - 2023 U6 - https://doi.org/https://doi.org/10.1103/PhysRevB.108.125142 IS - Vol. 108 PB - American Physical Society ER - TY - JOUR A1 - Klopp, Christoph A1 - Trittel, Torsten A1 - Harth, Kirsten A1 - Stannarius, Ralf T1 - Coalescence of biphasic droplets embedded in free standing smectic A films JF - Soft Matter N2 - We investigate micrometer-sized flat droplets consisting of an isotropic core surrounded by a nematic rim in freely suspended smectic A liquid-crystal films. In contrast to purely isotropic droplets which are characterized by a sharp edge and no long-range interactions, the nematic fringe introduces a continuous film thickness change resulting in long-range mutual attraction of droplets. The coalescence scenario is divided in two phases. The first one consists in the fusion of the nematic regions. The second phase involves the dissolution of a thin nematic film between the two isotropic cores. The latter has many similarities with the rupture of thin liquid films between droplets coalescing in an immiscible viscous liquid. Coalescence of biphasic droplets in free-standing smectic films is controlled in part by the rupture of a thin nematic membrane separating the isotropic droplet cores. Y1 - 2023 UR - https://pubs.rsc.org/en/content/articlelanding/2024/sm/d3sm01549a U6 - https://doi.org/10.1039/d3sm01549a SN - 1744-683X VL - 20 IS - 5 SP - 1036 EP - 1046 PB - Royal Society of Chemistry ER - TY - JOUR A1 - Nagel, Michael A1 - Schminder, Christian ED - Erich Schmidt Verlag, T1 - Sachbezogenes Verhandeln als Methode im Zielbildungsprozess von innovationsorientierten Public Private Partnerships. JF - Ideen- und Innovationsmanagement Y1 - 2023 U6 - https://doi.org/10.37307/j.2198-3151.2022.02.07 SN - 2198-3151 IS - 2 SP - 72 EP - 77 PB - Erich Schmidt Verlag GmbH & Co ER - TY - JOUR A1 - Johannsen, Andreas T1 - ERP-Einführung - Bewertung einer Standardimplementierungsmethode für SAP Business One JF - ERP Management Y1 - 2023 SN - 1860-6725 SP - 19 EP - 22 PB - GITO Verlag ER - TY - JOUR A1 - Kuznetsov, Arthur A1 - Frorip, Aleksandr A1 - Sünter, Alar A1 - Kasvand, Nensi A1 - Korsakov, Vadim A1 - Konoplev, Georgii A1 - Stepanova, Oksana A1 - Rusalepp, Linda A1 - Anton, Dea A1 - Püssa, Tõnu A1 - Roasto, Mati A1 - Abramova, Liubov A1 - Kozin, Andrey A1 - Toom, Lauri A1 - Hirsch, Sören A1 - Mukhin, Nikolay ED - mdpi, T1 - Fast Protein and Metabolites (Nucleotides and Nucleosides) Liquid Chromatography Technique and Chemical Sensor for the Assessment of Fish and Meat Freshness JF - Chemosensors N2 - 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. Y1 - 2023 UR - https://www.mdpi.com/2227-9040/11/1/69 U6 - https://doi.org/10.3390/chemosensors11010069 SN - 2227-9040 IS - 1/2023 / Band 11 PB - MDPI ER -