@article{Jechow2024, author = {Jechow, Andreas}, title = {Let there be Skyglow - light pollution from a large outdoor music festival (Lollapalooza Berlin 2016)}, series = {Scientific Reports}, volume = {14}, journal = {Scientific Reports}, publisher = {Springer Nature}, doi = {10.1038/s41598-024-62448-7}, pages = {1 -- 10}, year = {2024}, abstract = {Live music is often linked to elaborate light shows, particularly at large outdoor music festivals. However, artificial light at night is one form of environmental pollution, light pollution, and because outdoor festivals emit a substantial amount of artificial light into the environment, they are a potential source of light pollution. So far, no studies that quantified the impact of such festivals on urban light pollution and skyglow exist. Here, the light pollution produced by a major rock festival (Lollapalooza Berlin 2016 with 70,000 visitors per day in an urban park) was investigated with ground-based radiometry and night-time light data. A small night-sky radiometer installed near the main stages and a calibrated digital camera from a nearby observation spot inside of the park were used to quantify changes in night sky brightness and direct light emissions within the park. The impact of the music festival on the urban skyglow was indeed measurable. Zenith luminance increased locally by up to a factor of 8 and illuminance increased by about 50\% at the observation spot within the park. The radiance detected by night-time satellite was also increased during the festival. This is the first time, that light pollution from such a major rock music event was quantified.}, language = {en} } @article{KloppTrittelStannarius2024, author = {Klopp, Christoph and Trittel, Torsten and Stannarius, Ralf}, title = {Coarsening of Quasi Two-Dimensional Emulsions Formed by Islands in Free-Standing Smectic Films}, series = {CHEMPHYSCHEM}, journal = {CHEMPHYSCHEM}, publisher = {Wiley}, issn = {1439-4235}, doi = {10.1002/cphc.202400166}, pages = {1 -- 13}, year = {2024}, abstract = {We study the coarsening behavior of assemblies of islands on smectic A freely suspended films in ISS microgravity experiments. The islands can be regarded as liquid inclusions in a two-dimensional fluid in analogy to liquid droplets of the discontinuous phase of an emulsion. The coarsening is effectuated by two processes, predominantly by island coalescence, but to some extend also by Ostwald ripening, whereby large islands grow at the expense of surrounding smaller ones. A peculiarity of this system is that the continuous and the discontinuous phases consist of the same material. We determine the dynamics, analyze the self-similar aging of the island size distribution and discuss characteristic exponents of the mean island growth. Smectic islands on a thin freely suspended smectic film form a quasi two-dimensional emulsion, without a liquid subphase. We describe the coarsening dynamics that involves island coalescence and Ostwald ripening.}, language = {en} } @article{KantJohannsenCreutzburg2021, author = {Kant, Daniel and Johannsen, Andreas and Creutzburg, Reiner}, title = {Analysis of IoT Security Risks based on the exposure of the MQTT Protocol}, series = {Electronic Imaging}, volume = {33}, journal = {Electronic Imaging}, publisher = {Society for Imaging Science and Technology}, doi = {10.2352/ISSN.2470-1173.2021.3.MOBMU-096}, pages = {096-1 -- 096-8}, year = {2021}, language = {en} } @inproceedings{Levina2021, author = {Levina, Olga}, title = {Towards Implementation of Ethical Issues into the Recommender Systems Design}, series = {ICCGI 2021, The Sixteenth International Multi-Conference on Computing in the Global Information Technology, held in Nice, France during July 18 - 22, 2021}, booktitle = {ICCGI 2021, The Sixteenth International Multi-Conference on Computing in the Global Information Technology, held in Nice, France during July 18 - 22, 2021}, publisher = {IARIA}, pages = {6}, year = {2021}, language = {en} } @techreport{LooseLindstroemBolmgren2019, author = {Loose, Harald and Lindstr{\"o}m Bolmgren, Jon}, title = {GaitAnalysisDataBase - Short Overview}, pages = {1 -- 6}, year = {2019}, language = {en} } @misc{Uhl2017, author = {Uhl, Roland}, title = {Mit einem modifizierten Sieb des Eratosthenes erzeugte Zahlenfolgen}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-18701}, year = {2017}, abstract = {Das Sieb des Eratosthenes wird mit einer gr{\"o}ßeren Anfangszahl als der 2 durchgef{\"u}hrt, sodass nicht nur Primzahlen {\"u}brig bleiben. Von der sich ergebenden Folge wird die gr{\"o}ßte zusammengesetzte Zahl bestimmt.}, language = {de} } @inproceedings{HagenHascheCreutzburg2024, author = {Hagen, Dirk and Hasche, Eberhard and Creutzburg, Reiner M.}, title = {The 300th anniversary of Immanuel Kant: opportunities and challenges of the mega-event with ethically oriented XR and VFX}, series = {SPIE Defense + Commercial Sensing, 2024, National Harbor, Maryland, United States}, booktitle = {SPIE Defense + Commercial Sensing, 2024, National Harbor, Maryland, United States}, doi = {10.1117/12.3025603}, pages = {193 -- 204}, year = {2024}, abstract = {The 300th birthday of the world-famous German philosopher Immanuel Kant (1724-1804) in 2024 offers an extraordinary opportunity to explore integrating advanced technologies into cultural mega-events. This paper examines the opportunities and challenges of using various technologies, such as Extended Reality (XR) and Visual Effects (VFX), to bring this essential European intellectual to a broader audience. These technologies, including technological advances based on real-time rendering in conjunction with LED volumes and high-quality 3D assets, offer immersive and interactive event experiences. However, the use of these technologies presents specific challenges, such as processing limitations and the need to create specialized content, including the development of 3D models relevant to the life and philosophy of Immanuel Kant. This article provides an overview of the current state of such opportunities and challenges and examines their application in the context of this cultural mega-event. The aim is to create a compelling event experience, e.g., as part of a museum visit, while simultaneously using technology in a meaningful educational way. It is essential not to overload historical and intellectual personalities such as Immanuel Kant with technological possibilities in the sense of an ethical responsibility. At the same time, the creation and communication of knowledge require explanation in a museum context or another explanatory framework.}, language = {en} } @article{KoldeweijKantHarthetal.2021, author = {Koldeweij, Robin B. J. and Kant, Pallav and Harth, Kirsten and Ruiter, Rielle de and Gelderblom, Hanneke and Snoeijer, Jacco H. and Lohse, Detlef and Limbeek, Michiel A. J. van}, title = {Initial solidification dynamics of spreading droplets}, series = {Physical Review Fluids}, journal = {Physical Review Fluids}, number = {12}, publisher = {American Physical Society}, issn = {2469-990X}, doi = {10.1103/PhysRevFluids.6.L121601}, year = {2021}, abstract = {When a droplet is brought in contact with an undercooled surface, it wets the substrate and solidifies at the same time. The interplay between the phase transition effects and the contact-line motion, leading to its arrest, remains poorly understood. Here we reveal the early solidification patterns and dynamics of spreading hexadecane droplets. Total internal reflection imaging is employed to temporally and spatially resolve the early solidification behavior. With this, we determine the conditions leading to the contact-line arrest. We quantify the overall nucleation behavior, i.e., the nucleation rate and the crystal growth speed and show its sensitivity to the applied undercooling of the substrate. We also show that for strong enough undercooling it is the rapid growth of the crystals which determines the eventual arrest of the spreading contact line. By combining the Johnson-Mehl-Avrami-Kolmogorov nucleation theory and scaling relations for the spreading, we calculate the temporal evolution of the solid area fraction, which is in good agreement with our observations.}, language = {en} } @article{DietenbergerJechowKalinkatetal.2024, author = {Dietenberger, Manuel and Jechow, Andreas and Kalinkat, Gregor and Schroer, Sibylle and Saathoff, Birte and H{\"o}lker, Franz}, title = {Reducing the fatal attraction of nocturnal insects using tailored and shielded road lights}, series = {communications biology}, volume = {7}, journal = {communications biology}, doi = {10.1038/s42003-024-06304-4}, pages = {1 -- 12}, year = {2024}, abstract = {The attraction of insects to artificial light is a global environmental problem with far-reaching implications for ecosystems. Since light pollution is rarely integrated into conservation approaches, effective mitigation strategies towards environmentally friendly lighting that drastically reduce insect attraction are urgently needed. Here, we tested novel luminaires in two experiments (i) at a controlled experimental field site and (ii) on streets within three municipalities. The luminaires are individually tailored to only emit light onto the target area and to reduce spill light. In addition, a customized shielding renders the light source nearly invisible beyond the lit area. We show that these novel luminaires significantly reduce the attraction effect on flying insects compared to different conventional luminaires with the same illuminance on the ground. This underlines the huge potential of spatially optimized lighting to help to bend the curve of global insect decline without compromising human safety aspects. A customized light distribution should therefore be part of sustainable future lighting concepts, most relevant in the vicinity of protected areas.}, language = {en} } @inproceedings{VeldyaevaFitzScheeg2024, author = {Veldyaeva, Ekaterina and Fitz, Lukas R. G. and Scheeg, Jochen}, title = {Gamifying IT Service Management Education for Future IT Professionals}, series = {Pacific Asia Conference on Information Systems, Ho Chi Minh City, Vietnam, 2024}, booktitle = {Pacific Asia Conference on Information Systems, Ho Chi Minh City, Vietnam, 2024}, pages = {1 -- 9}, year = {2024}, abstract = {IT Service Management (ITSM) education is nowadays an established subject of IT-related higher education programs worldwide. The recent years have witnessed significant developments in software and ITSM frameworks, which underscores the importance of adapting educational formats to meet the latest standards. Recent developments include the introduction of practice-oriented approaches and case-based learning. Building upon previous literature, this study describes and evaluates the first iteration of a teaching case integrating a simulation game for practicing ITIL® 4 foundations in an undergraduate ITSM curriculum. The game-based approach shows scalability and dynamism, fostering high student engagement and content comprehension. It represents a promising avenue for training IT workers and contributes to ongoing ITSM education development.}, language = {en} } @inproceedings{Kraska2024, author = {Kraska, Martin}, title = {SMath + Maxima - Powerful Tool for Engineering Calculations}, series = {2024 7th International Conference on Information Technologies in Engineering Education (Inforino), Moscow, Russian Federation}, booktitle = {2024 7th International Conference on Information Technologies in Engineering Education (Inforino), Moscow, Russian Federation}, publisher = {IEEE}, isbn = {979-8-3503-7136-9}, doi = {10.1109/Inforino60363.2024.10551993}, pages = {1 -- 5}, year = {2024}, abstract = {SMath Studio is mathematical notebook software similar to Mathcad. Its outstanding and intuitive support for scientific units makes it an invaluable asset in higher engineering education. SMath Studio has been used for more than ten years in various courses at Brandenburg University of Applied Sciences, Germany (Technische Hochschule Brandenburg, THB). To enhance the usability of the software, substantial contributions have been made. One of them is the Maxima plugin for access to the free and open-source computer algebra system Maxima. This plugin combines the flexible notebook format of SMath Studio with powerful symbolic functions like integrals and solvers for algebraic and differential equations. Additionally, the plugin adds interactive 3D graphics to SMath. The paper discusses the basic design, features, and limitations, and showcases some applications.}, language = {en} } @article{DasGoeckeDe2021, author = {Das, Atanu and Goecke, Sven-Frithjof and De, Amitava}, title = {Joining of aluminium alloy and galvanized steel sheets multimaterial assembly using a gas metal arc based process}, series = {Tecnologia em Matalurgia, Materiais e Minera{\c{c}}{\~a}o}, journal = {Tecnologia em Matalurgia, Materiais e Minera{\c{c}}{\~a}o}, publisher = {ABM - Associa{\c{c}}{\~a}o Brasileira de Metalurgia, Materiais e Minera{\c{c}}{\~a}o}, issn = {2176-1515 (PRINT) 2176-1523 (ONLINE)}, doi = {10.4322/2176-1523.20212464}, year = {2021}, language = {en} } @inproceedings{Oertel2021, author = {Oertel, Christian}, title = {Virtual Tires: Requirements, Fields of Application and Ways of Implementation}, series = {Konferenz: 40th Annual Meeting and Conference on Tire Science \& Technology: Conference Theme: The Virtual Tire, online, 2021}, booktitle = {Konferenz: 40th Annual Meeting and Conference on Tire Science \& Technology: Conference Theme: The Virtual Tire, online, 2021}, publisher = {Tire Society}, address = {Online}, pages = {1 -- 18}, year = {2021}, language = {en} }