@misc{StockhausenJohannsenMaurer2023, author = {Stockhausen, Pablo and Johannsen, Andreas and Maurer, Robert}, title = {Machine-Learning Verfahren f{\"u}r eine nachhaltige Letzte-Meile-Logistik}, year = {2023}, abstract = {Dieser Beitrag entwickelt ein Konzept zur praktischen Umsetzung eines Machine- Learning Verfahrens zum L{\"o}sen von Vehicle Routing Problemen im Kontext einer nachhaltigen "Letzte-Meile"-Logistik, welches durch einen Prototyp umgesetzt und getestet wurde. Der Prototyp basiert auf dem "Reinforcement Learning"-System und verwendet als Algorithmus "REINFORCE mit Baseline". In einer Vergleichsanalyse wurde der Prototyp mit dem bekannten Vertreter Google-OR, anhand von zwei Anwendungsszenarien, verglichen. Der Prototyp {\"u}berzeugt dabei in der Laufzeit und dem Automatismus. Es konnte festgestellt werden, dass eine Verwendung von Lernenden-Systemen f{\"u}r das Vehicle Routing Problem sich bei nur bei einem gr{\"o}ßeren Stoppvolumen und einer erweiterten IT-Infrastruktur empfiehlt.}, language = {de} } @inproceedings{StockhausenJohannsenMaurer2023, author = {Stockhausen, Pablo and Johannsen, Andreas and Maurer, Robert}, title = {Konzeption eines Machine-Learnings-Verfahrens zum L{\"o}sen von Green Vehicle Routing Problemen}, series = {Konferenz: Informatik 2022, Lecture Notes in Informatics (LNI), Bonn, 2022/ Konferenzband: Informatik 2022 Fachtagung vom 26.-30. September 2022, Hamburg/ Band: P-326}, booktitle = {Konferenz: Informatik 2022, Lecture Notes in Informatics (LNI), Bonn, 2022/ Konferenzband: Informatik 2022 Fachtagung vom 26.-30. September 2022, Hamburg/ Band: P-326}, editor = {Krupka, Daniel and Federrath, Hannes and Demmler, Daniel}, publisher = {Gesellschaft f{\"u}r Informatik}, address = {Bonn}, isbn = {978-3-88579-720-3}, pages = {885 -- 897}, year = {2023}, language = {de} } @incollection{WereteckiKristal2024, author = {Weretecki, Patrick and Kristal, Samuel}, title = {Brand Value Co-Creation bei der Deutschen Telekom- Das (neu) entdeckte Potential der regionalen Marketingkommunikation}, series = {Marketing-Management : Konzepte - Instrumente - Unternehmensfallstudien / Philip Kotler, Kevin Lane Keller, Alexander Chernev, Marc Oliver Opresnik ; {\"U}bersetzung: Anke Harrer, Oberschleißheim - 16. aktualisierte Aufl. - M{\"u}nchen: Pearson, 2023}, booktitle = {Marketing-Management : Konzepte - Instrumente - Unternehmensfallstudien / Philip Kotler, Kevin Lane Keller, Alexander Chernev, Marc Oliver Opresnik ; {\"U}bersetzung: Anke Harrer, Oberschleißheim - 16. aktualisierte Aufl. - M{\"u}nchen: Pearson, 2023}, publisher = {Pearson}, isbn = {978-3-86894-443-3}, pages = {363 -- 368}, year = {2024}, language = {de} } @article{BraubachJander2023, author = {Braubach, Lars and Jander, Kai}, title = {1. Introduction}, series = {International Journal of Parallel, Emergent and Distributed Systems}, volume = {38}, journal = {International Journal of Parallel, Emergent and Distributed Systems}, number = {6}, publisher = {Taylor \& Francis}, issn = {1744-5779}, doi = {10.1080/17445760.2023.2251386}, pages = {459 -- 460}, year = {2023}, language = {en} } @inproceedings{Markgraf2024, author = {Markgraf, Klaus}, title = {Entwicklung eines Tools zur spezifischen, lastgangbasierten Eigenverbrauchsoptimierung mittels PV-Leistungsprognose}, series = {Konferenz: 18. Symposium Energieinnovation, 2024, Graz/Austria}, booktitle = {Konferenz: 18. Symposium Energieinnovation, 2024, Graz/Austria}, doi = {10.6084/m9.figshare.25610976}, pages = {1 -- 10}, year = {2024}, abstract = {The German government's initiative to cover 80\% of the gross electricity supply with renewable energies by 2050 brings considerable ecological benefits, but also poses several challenges. One of these challenges is the growing number of photovoltaic systems (PV systems), which, due to their high feed-in power, already pose a risk to the security of the electricity distribution grid during long periods of sunny weather. To counteract this, active research is being carried out in the field of PV power forecasting. This research is primarily aimed at providing the grid operator with a predicted power output, which enables a longer planning horizon and thus increases the operational grid security. However, the considerable annual electricity consumption of private households and the increasing spread of PV systems for self-consumption show that the energy behavior of households, especially self-consumption, also influences grid security. Additionally, households have an incentive to boost their self-consumption because the cost of drawing each kilowatt-hour from the grid is substantially higher than the compensation received for injecting an equivalent amount of energy back into the grid. However, as of now, there is no software available that easily enables households to tailor the usage patterns of their electrical appliances according to a photovoltaic (PV) forecast. The project described here aims to close this gap by creating such software. Various PV forecasting models are used and tested for their suitability for this purpose. A self-generated optimization process is implemented in this project to optimize the consumer configuration based on the PV forecasts. The here-developed tool enables the user to enter parameters for his PV system and the specific load profiles of his electrical appliances. Based on this data, the optimization algorithm determines a consumption plan with a forecast horizon until the end of the next day that maximizes the user's self-consumption. To validate the tool, the optimization process is carried out over a period of 60 days using a predefined scenario and the results are compared with a scenario in which the electrical appliances are intuitively operated at midday. The analysis of these results ultimately shows the potential impact of such a tool on the economic efficiency of private households and the supply stability.}, language = {en} } @article{AyalonAvisarJechowetal.2024, author = {Ayalon, Inbal and Avisar, Dror and Jechow, Andreas and Levy, Oren}, title = {Corals nitrogen and carbon isotopic signatures alters under Artificial Light at Night (ALAN)}, series = {The Science of The Total Environment}, journal = {The Science of The Total Environment}, number = {920}, publisher = {Elsevier}, doi = {10.1016/j.scitotenv.2024.170513}, year = {2024}, abstract = {This study examines the impact of Artificial Light at Night (ALAN) on two coral species, Acropora eurystoma and Pocillopora damicornis, in the Gulf of Aqaba/Eilat Red Sea, assessing their natural isotopic responses to highlight changes in energy and nutrient sourcing due to sensory light pollution. Our findings indicate significant disturbances in photosynthetic processes in Acropora eurystoma, as evidenced by shifts in δ13C values under ALAN, pointing to alterations in carbon distribution or utilization. In Pocillopora damicornis, similar trends were observed, with changes in δ13C and δ15N values suggesting a disruption in its nitrogen cycle and feeding strategies. The study also uncovers species-specific variations in heterotrophic feeding, a crucial factor in coral resilience under environmental stress, contributing to the corals' fixed carbon budget. Light measurements across the Gulf demonstrated a gradient of light pollution which possess the potential of affecting marine biology in the region. ALAN was found to disrupt natural diurnal tentacle behaviors in both coral species, crucial for prey capture and nutrient acquisition, thereby impacting their isotopic composition and health. Echoing previous research, our study underscores the need to consider each species' ecological and physiological contexts when assessing the impacts of anthropogenic changes. The findings offer important insights into the complexities of marine ecosystems under environmental stress and highlight the urgency of developing effective mitigation strategies.}, language = {en} } @article{HascheKaraschewskiCreutzburg2023, author = {Hasche, Eberhard and Karaschewski, Oliver and Creutzburg, Reiner}, title = {iPhone12 imagery in scene-referred computer graphics pipelines}, series = {Electronic Imaging}, journal = {Electronic Imaging}, publisher = {Society for Imaging Science and Technology}, doi = {10.2352/EI.2023.35.3.MOBMU-350}, pages = {350-1 -- 350-14}, year = {2023}, abstract = {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].}, language = {en} } @article{JasterCreutzburgHasche2023, author = {Jaster, Daniel and Creutzburg, Reiner and Hasche, Eberhard}, title = {A qualitative study of LiDAR technologies and their application areas}, series = {Electronic Imaging}, volume = {35}, journal = {Electronic Imaging}, publisher = {Society for Imaging Science and Technology}, doi = {10.2352/EI.2023.35.3.MOBMU-368}, pages = {368-1 -- 368-15}, year = {2023}, abstract = {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.}, language = {en} } @article{MalekiMohammadi2023, author = {Maleki, Maniya and Mohammadi, Mahdieh}, title = {Velocity and pressure functions of an oscillating flow in a circular Hele-Shaw cell}, series = {Iranian Journal of Physics Research}, volume = {22}, journal = {Iranian Journal of Physics Research}, number = {1}, publisher = {Physics Society of Iran}, doi = {10.47176/ijpr.22.1.81304}, pages = {113 -- 120}, year = {2023}, abstract = {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.}, language = {en} } @article{TrittelPuzyrevStannarius2024, author = {Trittel, Torsten and Puzyrev, Dmitry and Stannarius, Ralf}, title = {Platonic solids bouncing on a vibrating plate}, series = {Physical Review E}, volume = {109}, journal = {Physical Review E}, number = {3}, publisher = {American Physical Society}, doi = {10.1103/PhysRevE.109.034903}, year = {2024}, abstract = {The energy transfer between bouncing particles and rigid boundaries during impacts is crucially influenced not only by restitution coefficients of the material but also by particle shapes. This is particularly important when such particles are mechanically agitated with vibrating plates. Inertial measurement units are able to measure all acceleration and rotational velocity components of an object and store these data for subsequent analysis. We employ them to measure the dynamics of cubes and icosahedra on vibrating plates to study the efficiency of energy transfer into the individual degrees of freedom (DOFs) of the excited object. The rotational DOFs turn out to be much less excited than the vertical translational motion. Most remarkably, there is only little difference between the two Platonic solids in both the absolute energies and the energy partition ratios.}, language = {en} }