@inproceedings{RevinaKalabinaBelyak2023, author = {Revina, Aleksandra and Kalabina, Elena and Belyak, Olga}, title = {Employee Engagement and Soft Skills in the Digitalization of the Economy. Preliminary Study Results}, series = {Kumar, V., Kyriakopoulos, G.L., Akberdina, V., Kuzmin, E. (eds) Digital Transformation in Industry . DTI 2022. Lecture Notes in Information Systems and Organisation, vol 61. Springer, Cham}, booktitle = {Kumar, V., Kyriakopoulos, G.L., Akberdina, V., Kuzmin, E. (eds) Digital Transformation in Industry . DTI 2022. Lecture Notes in Information Systems and Organisation, vol 61. Springer, Cham}, publisher = {Springer}, doi = {10.1007/978-3-031-30351-7_34}, pages = {467 -- 479}, year = {2023}, abstract = {The fast-paced digitalization and automation make hard skills acquired by employees in their academic study programs outdated and irrelevant very fast. Hence, researchers and practitioners have recently demonstrated a growing interest in studying soft skills in various settings, including leadership, education, and training. Additionally, in times of digital transformation, businesses are promoting employee engagement evermore, particularly in the present context of crises and instability. The research intends to investigate this issue from the viewpoint of employee soft skills. We specifically look into the link between employees' soft skills and workplace engagement. While doing our research in two different countries, we distinguish between commercial and non-commercial organizations as well as add an international perspective. Based on an acknowledged European skills framework, we focus our study on such soft skills as teamwork, communication, and conflict management and use recognized surveys to quantify them. We use a well-known Gallup methodology to evaluate employee engagement. Using correlation analysis, we investigate the impact of the three selected skills on employee engagement while considering the organization type and country, factors that may play an important role in the digital transformation of businesses and companies.}, language = {en} } @article{MansoorSchwarzCreutzburg2023, author = {Mansoor, Nazneen and Schwarz, Klaus and Creutzburg, Rainer}, title = {Importance of OSINT/SOCMINT for modern disaster management evaluation - Australia, Haiti, Japan}, series = {Electronic Imaging}, volume = {35}, journal = {Electronic Imaging}, number = {3}, publisher = {Society for Imaging Science and Technology (IS\&T)}, doi = {10.2352/EI.2023.35.3.MOBMU-354}, pages = {354-1 -- 354-14}, year = {2023}, abstract = {Open-source technologies (OSINT) and Social Media Intelligence (SOCMINT) are becoming increasingly popular with investigative and government agencies, intelligence services, media companies, and corporations. These OSINT and SOCMINT technologies use sophisticated techniques and special tools to efficiently analyze the continually growing sources of information. There is a great need for training and further education in the OSINT field worldwide. This report describes the importance of open source or social media intelligence for evaluating disaster management. It also gives an overview of the government work in Australia, Haiti, and Japan for disaster management using various OSINT tools and platforms. Thus, decision support for using OSINT and SOCMINT tools is given, and the necessary training needs for investigators can be better estimated.}, language = {en} } @misc{OPUS4-3251, title = {Jahrbuch 2022/2023 der Absolventinnen und Absolventen}, editor = {Wilms, Andreas}, publisher = {Technische Hochschule Brandenburg}, address = {Brandenburg an der Havel}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-32514}, pages = {80}, year = {2023}, language = {de} } @article{VishnevskayaSchwarzCreutzburg2023, author = {Vishnevskaya, Valeria and Schwarz, Klaus and Creutzburg, Reiner}, title = {Practical OSINT investigation - Similarity calculation using Reddit user profile data}, series = {Electronic Imaging}, volume = {35}, journal = {Electronic Imaging}, number = {3}, publisher = {Society for Imaging Science and Technology (IS\&T)}, doi = {10.2352/EI.2023.35.3.MOBMU-356}, pages = {356-1 -- 356-10}, year = {2023}, abstract = {This paper presents a practical Open Source Intelligence (OSINT) use case for user similarity measurements with the use of open profile data from the Reddit social network. This PoC work combines the open data from Reddit and the part of the state-of-the-art BERT model. Using the PRAW Python library, the project fetches comments and posts of users. Then these texts are converted into a feature vector - representation of all user posts and comments. The main idea here is to create a comparable user's pair similarity score based on their comments and posts. For example, if we fix one user and calculate scores of all mutual pairs with other users, we will produce a total order on the set of all mutual pairs with that user. This total order can be described as a degree of written similarity with this chosen user. A set of "similar" users for one particular user can be used to recommend to the user interesting for him people. The similarity score also has a "transitive property": if \$user_1\$ is "similar" to \$user_2\$ and \$user_2\$ is similar to \$user_3\$ then inner properties of our model guarantees that \$user_1\$ and \$user_3\$ are pretty "similar" too. In this way, this score can be used to cluster a set of users into sets of "similar" users. It could be used in some recommendation algorithms or tune already existing algorithms to consider a cluster's peculiarities. Also, we can extend our model and calculate feature vectors for subreddits. In that way, we can find similar to the user's subreddits and recommend them to him.}, language = {en} } @article{SkylarSchwarzCreutzburg2023, author = {Skylar, Artem and Schwarz, Klaus and Creutzburg, Reiner}, title = {Practical OSINT investigation in Twitter utilizing AI-based aggressiveness analysis}, series = {Electronic Imaging}, volume = {35}, journal = {Electronic Imaging}, number = {3}, publisher = {Society for Imaging Science and Technology (IS\&T)}, doi = {10.2352/EI.2023.35.3.MOBMU-355}, pages = {355-1 -- 355-15}, year = {2023}, abstract = {Open-source intelligence is gaining popularity due to the rapid development of social networks. There is more and more information in the public domain. One of the most popular social networks is Twitter. It was chosen to analyze the dependence of changes in the number of likes, reposts, quotes and retweets on the aggressiveness of the post text for a separate profile, as this information can be important not only for the owner of the channel in the social network, but also for other studies that in some way influence user accounts and their behavior in the social network. Furthermore, this work includes a detailed analysis and evaluation of the Tweety library capabilities and situations in which it can be effectively applied. Lastly, this work includes the creation and description of a compiled neural network whose purpose is to predict changes in the number of likes, reposts, quotes, and retweets from the aggressiveness of the post text for a separate profile.}, language = {en} } @article{NarasimhanBhosalePervezetal.2023, author = {Narasimhan, Pranesh Kumar and Bhosale, Chinmay and Pervez, Muhammad Hasban and Naqvi, Najiba Zainab and Ecevit, Mert Ilhan and Schwarz, Klaus and Creutzburg, Reiner}, title = {Open-source Intelligence (OSINT) investigation in Facebook}, series = {Electronic Imaging}, volume = {35}, journal = {Electronic Imaging}, number = {3}, publisher = {Society for Imaging Science and Technology (IS\&T)}, doi = {10.2352/EI.2023.35.3.MOBMU-357}, pages = {357-1 -- 357-12}, year = {2023}, abstract = {Open Source Intelligence (OSINT) has come a long way, and it is still developing ideas, and lots of investigations are yet to happen in the near future. The main essential requirement for all the OSINT investigations is the information that is valuable data from a good source. This paper discusses various tools and methodologies related to Facebook data collection and analyzes part of the collected data. At the end of the paper, the reader will get a deep and clear insight into the available techniques, tools, and descriptions about tools that are present to scrape the data out of the Facebook platform and the types of investigations and analyses that the gathered data can do.}, language = {en} } @inproceedings{TetzlaffPurohitSpalleketal.2023, author = {Tetzlaff, Laura and Purohit, Anne-Maria and Spallek, Jacob and Holmberg, Christine and Schrader, Thomas}, title = {Evaluating Interoperability in German Critical Incident Reporting Systems}, series = {German Medical Data Sciences 2023 - Science. Close to People. Proceedings of the 68th Annual Meeting of the German Association of Medical Informatics, Biometry, and Epidemiology e.V. (gmds) 2023, Heilbronn, Germany}, booktitle = {German Medical Data Sciences 2023 - Science. Close to People. Proceedings of the 68th Annual Meeting of the German Association of Medical Informatics, Biometry, and Epidemiology e.V. (gmds) 2023, Heilbronn, Germany}, publisher = {IOS Press}, doi = {10.3233/SHTI230722}, pages = {249 -- 257}, year = {2023}, abstract = {In industrialised countries, one in ten patients suffers harm during hospitalization. Critical Incident Reporting Systems (CIRS) aim to minimize this by learning from errors and identifying potential risks. However, a lack of interoperability among the 16 CIRS in Germany hampers their effectiveness.}, language = {en} } @inproceedings{PepeBuchholzLasenby2024, author = {Pepe, Alberto and Buchholz, Sven and Lasenby, Joan}, title = {Clifford Group Equivariant Neural Network Layers for Protein Structure Prediction}, series = {Northern Lights Deep Learning Conference, VOL 233, 09-11 Januar 2024, Tromso, Norwegen}, booktitle = {Northern Lights Deep Learning Conference, VOL 233, 09-11 Januar 2024, Tromso, Norwegen}, publisher = {PMLR}, pages = {1 -- 7}, year = {2024}, abstract = {We employ Clifford Group Equivariant Neural Network (CGENN) layers to predict protein coordinates in a Protein Structure Prediction (PSP) pipeline. PSP is the estimation of the 3D structure of a protein, generally through deep learning architectures. Information about the geometry of the protein chain has been proven to be crucial for accurate predictions of 3D structures. However, this information is usually flattened as machine learning features that are not representative of the geometric nature of the problem. Leveraging recent advances in geometric deep learning, we redesign the 3D projector part of a PSP architecture with the addition of CGENN layers . CGENNs can achieve better generalization and robustness when dealing with data that show rotational or translational invariance such as protein coordinates, which are independent of the chosen reference frame. CGENNs inputs, outputs, weights and biases are objects in the Geometric Algebra of 3D Euclidean space, i.e. G3,0,0, and hence are interpretable from a geometrical perspective. We test 6 approaches to PSP and show that CGENN layers increase the accuracy in term of GDT scores by up to 2.1\\%, with fewer trainable parameters compared to linear layers and give a clear geometric interpretation of their outputs.}, language = {en} } @inproceedings{MarkgrafDietrichMuelleretal.2023, author = {Markgraf, Klaus and Dietrich, Benjamin and M{\"u}ller, Katja and Flassig, Robert and Flassig, Peter}, title = {FINEconcepts - Wissenstransfer und Energiesystemoptimierung mithilfe des digitalen Zwillings}, series = {NWK, HS Harz, 2023}, booktitle = {NWK, HS Harz, 2023}, publisher = {HS Harz}, pages = {428 -- 435}, year = {2023}, abstract = {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.}, language = {en} } @article{WangHarthPuzyrevetal.2022, author = {Wang, Jing and Harth, Kirsten and Puzyrev, Dmitry and Stannarius, Ralf}, title = {The effect of obstacles near a silo outlet on the discharge of soft spheres}, series = {New Journal of Physics}, volume = {24}, journal = {New Journal of Physics}, publisher = {IOP}, doi = {10.1088/1367-2630/ac8bea}, year = {2022}, language = {en} } @article{MissaouiHarthTritteletal.2022, author = {Missaoui, Amine and Harth, Kirsten and Trittel, Torsten and Klopp, Christoph and Stannarius, Ralf and Lacaze, Emanuelle}, title = {Shape instabilities of islands in smectic films under lateral compression}, series = {Soft Matter}, volume = {16}, journal = {Soft Matter}, publisher = {Royal Society of Chemistry}, issn = {1744-6848}, doi = {10.1039/D2SM00144F}, pages = {3193 -- 3205}, year = {2022}, language = {en} } @techreport{KybaArroyoDegenetal.2024, author = {Kyba, Christopher C.M. and Arroyo, Hector Linares and Degen, Tobias and Abascal, Angela and Simoneau, Alexandre and Kuffer, Monika and H{\"o}lker, Franz and Aub{\´e}, Martin and Walczak, Ken and Espey, Brian R. and de Miguel, Alejandro S{\´a}nchez and Jechow, Andreas and Gyuk, Geza}, title = {Night Watch Mission Description Document}, publisher = {GFZ German Research Centre for Geosciences}, address = {Potsdam}, doi = {10.48440/gfz.b103-24052}, pages = {1 -- 156}, year = {2024}, abstract = {This is the Mission Description Document (MDD) for a future Earth observation satellite mission addressing visible band observations of nighttime lights. The mission driving science applications are for the remote sensing of electricity, energy, and ecological impacts via the observation of artificial light. The MDD covers the mission requirements justification from the high-level scientific objectives and societal benefits to measurement requirements at product level 1b, i.e. radiances at the top of the atmosphere. In providing justification for the individual requirements and their traceability to scientific objectives and societal challenges, we address Scientific Readiness Levels 1 to 3. The MDD is the outcome of the European Space Agency New Earth Observation Mission Ideas project "Night Watch". The Task Reports (TR) from the project are appended to the MDD, and are authored by the same group as the MDD itself.}, language = {en} } @article{KloppTrittelHarthetal.2022, author = {Klopp, Christoph and Trittel, Torsten and Harth, Kirsten and Stannarius, Ralf}, title = {Smectic free-standing films under fast lateral compression}, series = {Soft Matter}, journal = {Soft Matter}, publisher = {Royal Society of Chemistry}, issn = {1744-683X, 1744-6848}, doi = {10.1039/D1SM01207J}, pages = {146 -- 155}, year = {2022}, abstract = {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.}, language = {en} } @book{Franz2019, author = {Franz, Robert U.}, title = {PreLytica - Prescriptive Analytics}, editor = {Franz, Robert U.}, edition = {1}, publisher = {Shaker Verlag}, address = {Aachen}, isbn = {978-3-8440-6446-9}, doi = {10.25933/opus4-2202}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:522-opus4-22029}, publisher = {Technische Hochschule Brandenburg}, pages = {262}, year = {2019}, abstract = {Dieses Buch ist Teil der Projektdokumentation des Forschungsvorhabens PreLytica der Technischen Hochschule Brandenburg. Das Projekt soll die systematische Erfassung, qualit{\"a}tsgesicherte Integration und entscheidungsrelevante Auswertung von Massendaten erm{\"o}glichen. Mit Hilfe pr{\"a}skriptiver Analytik k{\"o}nnen große, teilweise unstrukturierte Datenmengen zusammengefasst,analysiert und f{\"u}r konkrete Entscheidungen nutzbar gemacht werden. Mittels vorhandener Daten - selbst erfasste Daten genau so wie offen im Internet zug{\"a}ngliche Daten - kann durch Kombination unterschiedlicher Datenquellen neues Wissen generiert werden. Das Forschungsprojekt besch{\"a}ftigt sich mit der Entwicklung zweier prototypischer Anwendungen aus unterschiedlichen Einsatzbereichen. Das Teilprojekt Sport Performance Insight (SPI) mit dem Gesundheitssektor und das Teilprojekt Solar Potential Analytics (SPA) mit dem Energiesek tor. Band 1 der Projektdokumentation besch{\"a}ftigt sich dabei mit Grundlagen zu den beiden Szenarios und dem Aufbau der Prototypen. Es wird die grundlegende Architektur der verwendeten Anwendungen beschrieben. Weiterhin wird die Projektorganisation und Integration in den Forschungs- und Lehrbetrieb am Fachbereich Wirtschaft der Technischen Hochschule Brandenburg beschrieben.}, subject = {Klein- und Mittelbetrieb}, language = {de} } @article{Guterding2023, author = {Guterding, Daniel}, title = {Sparse Modeling Approach to the Arbitrage-Free Interpolation of Plain-Vanilla Option Prices and Implied Volatilities}, series = {Risks}, journal = {Risks}, number = {11 (5)}, publisher = {MDPI AG}, doi = {https://doi.org/10.3390/risks11050083}, pages = {24}, year = {2023}, abstract = {We present a method for the arbitrage-free interpolation of plain-vanilla option prices and implied volatilities, which is based on a system of integral equations that relates terminal density and option prices. Using a discretization of the terminal density, we write these integral equations as a system of linear equations. We show that the kernel matrix of this system is, in general, ill-conditioned, so that it cannot be solved for the discretized density using a naive approach. Instead, we construct a sparse model for the kernel matrix using singular value decomposition (SVD), which allows us not only to systematically improve the condition number of the kernel matrix, but also determines the computational effort and accuracy of our method. In order to allow for the treatment of realistic inputs that may contain arbitrage, we reformulate the system of linear equations as an optimization problem, in which the SVD-transformed density minimizes the error between the input prices and the arbitrage-free prices generated by our method. To further stabilize the method in the presence of noisy input prices or arbitrage, we apply an 𝐿1-regularization to the SVD-transformed density. Our approach, which is inspired by recent progress in theoretical physics, offers a flexible and efficient framework for the arbitrage-free interpolation of plain-vanilla option prices and implied volatilities, without the need to explicitly specify a stochastic process, expansion basis functions or any other kind of model. We demonstrate the capabilities of our method in a number of artificial and realistic test cases.}, language = {en} } @article{XuShimizuGuterdingetal.2023, author = {Xu, Han-Xiang and Shimizu, Makoto and Guterding, Daniel and Otsuki, Junya and Jeschke, Harald O.}, title = {Pressure evolution of electronic structure and magnetism in the layered van der Waals ferromagnet CrGeTe3}, series = {Physical Review B}, journal = {Physical Review B}, number = {Vol. 108}, publisher = {American Physical Society}, doi = {https://doi.org/10.1103/PhysRevB.108.125142}, pages = {15}, year = {2023}, abstract = {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.}, language = {en} } @misc{DasChaurasiaMandaletal.2023, author = {Das, Atanu and Chaurasia, Prashtan Kumar and Mandal, Gopi K. and Goecke, Sven-Frithjof and De, Amitava}, title = {Sample calculations to estimate joint distortion based on the published article "Analytical Estimation of Thermomechanical Distortion and Interface Layer Thickness for Gas Metal Arc Lap Joining of Dissimilar Sheets"}, year = {2023}, abstract = {A sample set of calculations is presented in this supplemental document to analytically estimate joint distortion for gas metal arc lap joining of aluminum and steel thin sheets following the published article "Analytical Estimation of Thermomechanical Distortion and Interface Layer Thickness for Gas Metal Arc Lap Joining of Dissimilar Sheets"}, language = {en} } @article{DasChaurasiaMandaletal.2023, author = {Das, Atanu and Chaurasia, Prashtan Kumar and Mandal, Gopi K. and Goecke, Sven-Frithjof and De, Amitava}, title = {Analytical estimation of thermomechanical distortion and interface layer thickness for gas metal arc lap joining of dissimilar sheets}, series = {Welding in the World}, journal = {Welding in the World}, number = {76/2023}, publisher = {Springer Link}, issn = {432288}, doi = {10.1007/s40194-01426-x}, pages = {33 -- 49}, year = {2023}, language = {en} } @article{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} } @article{ChaurasiaGoeckeDe2022, author = {Chaurasia, Prashtan Kumar and Goecke, Sven-Frithjof and De, Amitava}, title = {Real-time monitoring of temperature field, metal transfer and cooling rate during gas metal arc-directed energy deposition}, series = {Science and Technology of Welding and Joining}, journal = {Science and Technology of Welding and Joining}, number = {27}, publisher = {Taylor \& Francis}, issn = {13621718}, doi = {10.1080/13621718.2022.2080447}, pages = {512 -- 521}, year = {2022}, language = {en} }