@inproceedings{FiebelkornKugelGuentheretal.2025, author = {Fiebelkorn, Richard and Kugel, Rafael and G{\"u}nther, Norman and Reiff-Stephan, J{\"o}rg}, title = {Predictive Maintenance in der Baumpflege - TreeAngel}, series = {Tagungsband AALE 2025 : menschenzentrierte Automation im digitalen Zeitalter}, booktitle = {Tagungsband AALE 2025 : menschenzentrierte Automation im digitalen Zeitalter}, editor = {Reiff-Stephan, J{\"o}rg and J{\"a}kel, Jens and Reichelt, Dirk}, publisher = {Hochschule f{\"u}r Technik, Wirtschaft und Kultur}, address = {Leipzig}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-20193}, pages = {251 -- 259}, year = {2025}, abstract = {Die Gew{\"a}hrleistung der Verkehrssicherheit von B{\"a}umen stellt eine zentrale Herausforderung f{\"u}r St{\"a}dte und Gemeinden dar. Traditionelle, manuelle Inspektionsmethoden sind zeit- und ressourcenintensiv sowie anf{\"a}llig f{\"u}r menschliche Fehler. Der folgende Artikel pr{\"a}sentiert ein innovatives System zur automatisierten Baumzustandsbewertung, welches moderne Kameratechnologien und K{\"u}nstliche Intelligenz (KI) nutzt. Im Rahmen einer Machbarkeitsstudie wurden Bilddaten, welche durch verschiedene Kamerasysteme erzeugt wurden, analysiert. Basierend auf diesen Daten wurde ein YOLOv8-Modell trainiert, welches eine pr{\"a}zise Detektion von B{\"a}umen und Sch{\"a}den, wie beispielsweise Totholz, erm{\"o}glicht. Die Ergebnisse des vorgestellten Prototypensystems sind vielversprechend hinsichtlich Genauigkeit und Effizienz. Es zeigt das Potenzial, manuelle Inspektionen durch automatisierte Verfahren zu erg{\"a}nzen oder zu ersetzen. Die pr{\"a}sentierten Resultate legen den Grundstein f{\"u}r nachhaltige und skalierbare Ans{\"a}tze in der Baumpflege und k{\"o}nnen zur Steigerung der {\"o}ffentlichen Sicherheit und Effizienz im urbanen Management beitragen.}, language = {de} } @inproceedings{PrellGuentherReiffStephan2021, author = {Prell, Bastian and G{\"u}nther, Norman and Reiff-Stephan, J{\"o}rg}, title = {Cyber-Physical Production Systems in Settings with Limited Infrastructure}, series = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, booktitle = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, publisher = {TIB Open Publishing}, address = {Hannover}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-14993}, pages = {229 -- 238}, year = {2021}, abstract = {During the last decade production innovation was mainly focused on connectivity aspects. The vision of smart factories running on software, that uses collected machine data, has become true but foremost for leading industrial companies in highly developed countries. Apart from these, production can also be found in non-industrialized craft professions as well as in less developed countries. As digitalization does not necessarily require an industrial or developed setting the latter could possibly benefit from it as well. Socio-cyber-physical production systems have been used to describe the interdependencies of linked production systems but usually focus on highly developed regions as well as for industrial applications. This paper lines out similarities and differences for each case, introduces the concept of cyber-physical production systems (CPPS) and its extension to socio-CPPS (SCPPS), which emphasizes the role of human workers in the production environment. The relation between industrial, non-industrial production and innovations is examined. Furthermore, the widening of SCCPS concepts for non-industrial production is discussed.}, language = {en} } @inproceedings{FalkvandeSandCorasanitietal.2021, author = {Falk, Constantin and van de Sand, Ron and Corasaniti, Sandra and Reiff-Stephan, J{\"o}rg}, title = {A Comparison Study of Data-Driven Anomaly Detection Approaches for Industrial Chillers}, series = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, booktitle = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, publisher = {TIB Open Publishing}, address = {Hannover}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-14970}, pages = {165 -- 174}, year = {2021}, abstract = {Faults in industrial chiller systems can lead to higher energy consumption, increasing wear of system components and shorten equipment life. While they gradually cause anomalous system operating conditions, modern automatic fault detection models aim to detect them at low severity by using real-time sensor data. Many scientific contributions addressed this topic in the past and presented data-driven approaches to detect faulty system states. Although many promising results were presented to date, there is lack of suitable comparison studies that show the effectiveness of the proposed models by use of data stemming from different chiller systems. Therefore this study aims at detecting a suitable data-driven approach to detect faults reliable in different domains of industrial chillers. Thus, a unified procedure is developed, to train all algorithms in an identical way with same data-basis. Since most of the reviewed papers used only one dataset for training and testing, the selected approaches are trained and validated on two different datasets from real refrigeration systems. The data-driven approaches are evaluated based on their accuracy and true negative rate, from which the most suitable approach is derived as a conclusion.}, language = {en} } @inproceedings{vandeSandCorasanitiReiffStephan2021, author = {van de Sand, Ron and Corasaniti, Sandra and Reiff-Stephan, J{\"o}rg}, title = {Positive-Unlabelled Learning based Novelty Detection for Industrial Chillers}, series = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, volume = {1}, booktitle = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, publisher = {TIB Open Publishing}, address = {Hannover}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-14965}, pages = {155 -- 164}, year = {2021}, abstract = {Chiller systems are used in many different applications in both the industrial and the commercial sector. They are considered major energy consumers and thus contribute a non-negligible factor to environmental pollution as well as to the overall operating cost. In addition, chillers, especially in industrial applications, are often associated with high reliability requirements, as unplanned system downtimes are usually costly. As many studies over the past decades have shown, the presence of faults can lead to significant performance degradation and thus higher energy consumption of these systems. Thus, data-driven fault detection plays an ever-increasing role in terms of energy efficient control strategies. However, labelled data to train associated algorithms are often only available to a limited extent, which consequently inhibits the broad application of such technologies. Therefore, this paper presents an approach that exploits only a small amount of labelled and large amounts of unlabelled data in the training phase in order to detect fault related anomalies. For this, the model utilizes the residual space of the data transformed through principal component analyses in conjunction with a biased support vector machine, which can be ascribed to the concept of semi-supervised learning, or more specifically, positive-unlabelled learning.}, language = {en} } @inproceedings{WilbersvandeSandPrelletal.2025, author = {Wilbers, Simon and van de Sand, Ron and Prell, Bastian and Reiff-Stephan, J{\"o}rg}, title = {Agentic Recommender System Konzept f{\"u}r nachhaltiges Wissensmanagement}, series = {Wildauer Konferenz f{\"u}r K{\"u}nstliche Intelligenz 2025 (WiKKI25)}, booktitle = {Wildauer Konferenz f{\"u}r K{\"u}nstliche Intelligenz 2025 (WiKKI25)}, editor = {Reiff-Stephan, J{\"o}rg and Beuster, Anja}, publisher = {TIB Open Publishing}, address = {Hannover}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-20764}, year = {2025}, abstract = {Unternehmen stehen vor erheblichen Herausforderungen beim Erhalt, bei der Nutzung und Weitergabe zentralen Wissens. Demografischer Wandel, zunehmender Mitarbeiterfluktuation und steigende organisatorische Komplexit{\"a}t erschweren klassische Dokumentations- und Austauschprozesse, welche auf erhebliche Mitarbeitendenmitwirkung angewiesen sind. Mithilfe generativer KI und agentischer Recommender-Systeme lassen sich diese Hindernisse {\"u}berwinden, indem wichtiges Wissen "on-the-fly" und weitestgehend automatisiert erfasst wird. Ein zentrales Element bildet hierbei die Kombination aus semantischen Embeddings, einer Graphdatenbank und spezialisierten KI-Agenten, die Dokumente und Chatverl{\"a}ufe analysieren, Mitarbeiter gezielt mit Vorschl{\"a}gen unterst{\"u}tzen und Wissen so kontinuierlich aktualisieren. So entsteht eine effektive Wissenskultur mit niedrigen Barrieren f{\"u}r die Nutzung dank minimalem Mehraufwand f{\"u}r die menschlichen Nutzer.}, language = {de} } @inproceedings{ReiffStephanZeise2025, author = {Reiff-Stephan, J{\"o}rg and Zeise, Dominique}, title = {AI-Based Cooperation Management in the Early Stages of Entrepreneurship: Matchmaking at Start-Up Events}, series = {Wildauer Konferenz f{\"u}r K{\"u}nstliche Intelligenz 2025 (WiKKI25)}, booktitle = {Wildauer Konferenz f{\"u}r K{\"u}nstliche Intelligenz 2025 (WiKKI25)}, editor = {Reiff-Stephan, J{\"o}rg and Beuster, Anja}, publisher = {TIB Open Publishing}, address = {Hannover}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-20779}, year = {2025}, abstract = {In today's dynamic industry, successful start-ups require not only innovative ideas, but also the right partners - artificial intelligence can help bring them together efficiently and in a targeted manner. This article discusses the role of artificial intelligence (AI) in cooperation management at start-up events. The authors present the AI-supported matchmaking tool 'KIKma', which uses profile and interest analyses to make targeted cooperation suggestions to founders, investors and mentors. The system is based on a transformer model that classifies participant profiles and generates suggestions for targeted speed dating slots. The results show a high degree of accuracy, but occasional misclassifications occur due to ambiguities. This could be improved by fine-tuning the model or optimising the questionnaires. The aim is to facilitate exchange in the start-up landscape and establish an intelligent, adaptive cooperation network in the long term. The authors see great potential for future applications in innovation management in the continuous optimisation of the matching algorithm.}, language = {de} } @inproceedings{FiebelkornKugelGuentheretal.2025, author = {Fiebelkorn, Richard and Kugel, Rafael and G{\"u}nther, Norman and Reiff-Stephan, J{\"o}rg}, title = {Predictive Maintenance in Tree Care - TreeAngel}, series = {Wildauer Konferenz f{\"u}r K{\"u}nstliche Intelligenz 2025 (WiKKI25)}, booktitle = {Wildauer Konferenz f{\"u}r K{\"u}nstliche Intelligenz 2025 (WiKKI25)}, editor = {Reiff-Stephan, J{\"o}rg and Beuster, Anja}, publisher = {TIB Open Publishing}, address = {Hannover}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-20801}, year = {2025}, abstract = {Ensuring the traffic safety of trees poses a significant challenge for urban authorities. Conventional manual inspection methods are both time-consuming and resource-intensive, and they are subject to human error. The following paper presents an innovative system for automated tree condition assessment using modern camera technologies and artificial intelligence (AI). As part of a feasibility study, image data generated by various camera systems was analyzed. Based on this data, a YOLOv8 model was trained, which enables precise detection of trees and damage, such as deadwood. The results of the prototype system presented are promising in terms of accuracy and efficiency, suggesting the potential to supplement or replace manual spections with automated procedures. The results of this study lay the foundation for sustainable and scalable approaches in tree care and can contribute to increasing public safety and efficiency in urban management.}, language = {en} } @inproceedings{DietrichvandeSandReiffStephan2021, author = {Dietrich, Alexander and van de Sand, Ron and Reiff-Stephan, J{\"o}rg}, title = {Implementation of a Machine Tool Retrofit System}, series = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, booktitle = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, publisher = {TIB Open Publishing}, address = {Hannover}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-15004}, pages = {239 -- 247}, year = {2021}, abstract = {Small and medium-sized companies increasingly turning their attention towards the fourth industrial revolution. In order to increase their own long-term competitiveness, there is a growing desire to make production smarter, more efficient, safer and more sustainable through new technologies. Often, however, existing plants cannot be easily replaced by modern equipment. The reasons for this can be high investment costs, excessive downtimes or the unavailability of an equivalent machine. An alternative solution to the purchase of new equipment is the modernisation or expansion of existing systems, also called retrofitting. Thus, this paper deals with the retrofit process of a machine tool, whereby the software architecture of the control unit is the primary concern of this work.}, language = {en} } @inproceedings{GieseReiffStephan2021, author = {Giese, Lutz B. and Reiff-Stephan, J{\"o}rg}, title = {Hydrogen and Usability of Hydrogen Storage Technologies}, series = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, booktitle = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, publisher = {TIB Open Publishing}, address = {Hannover}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-14937}, pages = {97 -- 106}, year = {2021}, abstract = {Science, technology and politics agree: hydrogen will be the energy carrier of the future. It will replace fossil fuels based on a sufficient supply from sustainable energy. Since the possibilities of storing and transporting hydrogen play a decisive role here, the so-called LOHC (Liquid Organic Hydrogen Carriers) can be used as carrier materials. LOHC carrier materials can reversibly absorb hydrogen, store it without loss and release it again when needed. Since little or no pressure is required, normal containers or tanks can be used. The volume or mass-related energy densities can reach around a quarter of liquid fossil fuels. This paper is to give an introduction to the field of hydrogen storage and usage of those LOHC, in particular. The developments of the last ten years have been related to the storage and transport of hydrogen with LOHC. These are crucial to meet the future demand for energy carriers e.g. for mobile applications. For this purpose, all transport systems are under consideration as well as the decentralized supply of rural areas with low technological penetration, e.g. regions of Western Africa which are often characterized by a lack of energy supply. Hydrogen bound in LOHC can provide a hazard-free alternative for distribution. The paper provides an overview of the conversion forms as well as the chemical carrier materials. Dibenzyltoluene as well as N-ethylcarbazole - as examples for LOHC - are discussed as well as chemical hydrogen storage materials like ammonia boranes as alternatives to LOHC.}, language = {en} } @inproceedings{GribovaGiese2021, author = {Gribova, Maria and Giese, Lutz B.}, title = {Sustainably Produced Hydrogen}, series = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021}, booktitle = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021}, publisher = {TIB Open Publishing}, address = {Hannover}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-14940}, pages = {107 -- 116}, year = {2021}, abstract = {The fossil fuels used to provide energy, such as coal, crude oil and natural gas, are largely responsible for carbon dioxide emissions and other so-called greenhouse gases. Hydrogen gas (H2) can make a key contribution to decarbonization. It can be produced using various processes. Several processes are available to produce hydrogen, such as (i) steam reforming, (ii) cracking process or (iii) electrolysis. Depending on the source of origin, there is a distinction made between different "colours". Gray, blue, turquoise, yellow and green hydrogen is avail­able, the latter made using Renewable Energies. However, items such as (i) possible variants of hydrogen, (ii) leading export countries or (iii) provision paths to be preferred in the future will be discussed in this paper.}, language = {en} } @inproceedings{SchmidtGiese2021, author = {Schmidt, Marcus and Giese, Lutz B.}, title = {Bi-facial Open-Space Photovoltaic Systems versus Conventional Systems using Mono-facial Modules}, series = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, booktitle = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, publisher = {TIB Open Publishing}, address = {Hannover}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-14922}, pages = {37 -- 42}, year = {2021}, abstract = {As part of a scientific work within the solar company Sunfarming GmbH, the aim was to find out whether bi-facial modules on open spaces deliver better results economically than conventional mono-facial solar modules. In this context, an already installed 750 kWp PV system with mono-facial solar modules was compared directly with a structurally identical PV system with bi-facial modules, which, however, does not exist in practice but was only simulated with PV software. The second part of the investigation includes the comparison of four different assembly systems or elevation variants in order to determine the system with the best relationship between system yield and costs. The final result of the first investigation showed that the use of bi-facial modules reduced the specific costs per kWh by approximately 5 \%. In order to improve this effect, the use of compact assembly systems is recommended, e.g. five rows of modules per table with horizontal alignment.}, language = {en} } @inproceedings{OPUS4-1488, title = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, editor = {Reiff-Stephan, J{\"o}rg and Amouzou, Kou 'santa and Adanlete Adjanoh, Assiongbon}, publisher = {TIB Open Publishing}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-14887}, year = {2021}, abstract = {Renewable energy sources are more important today than ever before, as they represent a key factor in reducing greenhouse emissions and fossil fuel consumption. Avoiding excessive burdens on future generations has now become the declared challenge of this century and justifies the efforts we must undertake to reduce global warming. This can only be achieved by conceiving new technical approaches, exploiting alternative resources and by raising people's awareness of the sustainable use of their own livelihoods. However, this change in awareness is a process that needs to be driven forward, especially in the field of research and education, and is therefore the declared aim of the Joint German-West African Conference on Sustainable, Renewable Energy Systems - SusRES. This annual conference provides a platform for exchange between scientists, students and many other interested parties, with technological progress at the forefront of the event. The SusRES conference is known as an accelerator for an ever-growing international network, not limited to the circumstances of a single country or even continent, which strives to take on and meet the global challenges of the present and future. This year's guiding theme of the event -Decentralized systems as a key factor in clean energy production for locations with limited infrastructure- of the event is primarily based on the consideration of how the energy supply of the future is to be designed. For some years now, a paradigm shift towards decentralised energy supply has been observed, which opens up new possibilities especially in areas with weak infrastructural supply. This is not just about providing energy from renewable resources, but also about exploiting this energy we have today efficiently and sustainably, whereby intelligent and interconnected systems play an ever-increasing role. The reader is provided with exciting insights into these topics within this conference proceedings elaborated by stakeholders from twelve time zones and four continents. In their contributions, the authors address important findings, especially from research but also from teaching, which represent an important milestone in their activities and thus make a significant contribution to our declared goals.}, language = {en} } @inproceedings{HollmannRegiererD'Eliaetal.2018, author = {Hollmann, Susanne and Regierer, Babette and D'Elia, Domenica and Frohme, Marcus and Gruden, Kristina and Pfeil, Juliane and Baebler, Spela and Sezerman, Ugur and Evelo, Chris T. and Erhart, Friederike and Huppertz, Berthold and Bongcam-Rudloff, Erik and Trefois, Christophe and Gruca, Aleksandra and Duca, Deborah and Colotti, Gianni and Merino-Martinez, Roxana and Ouzounis, Christos and Hunewald, Oliver and He, Feng and Kremer, Andreas}, title = {Standardisation in life-science research - Making the case for harmonization to improve communication and sharing of data amongst researchers}, editor = {Kalajdziski, Slobodan and Ackovska, Nevena}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-20118}, pages = {11}, year = {2018}, abstract = {Modern, high-throughput methods for the analysis of genetic information, gene and metabolic products and their interactions offer new opportunities to gain comprehensive information on life processes. The data and knowledge generated open diverse application possibilities with enormous innovation potential. To unlock that potential skills in generating but also properly annotating the data for further data integration and analysis are needed. The data need to be made computer readable and interoperable to allow integration with existing knowledge leading to actionable biological insights. To achieve this, we need common standards and standard operating procedures as well as workflows that allow the combination of data across standards. Currently, there is a lack of experts who understand the principles and possess knowledge of the principles and relevant tools. This is a major barrier hindering the implementation of FAIR (findable, accessible, interoperable and reusable) data principles and the actual reusability of data. This is mainly due to insufficient and unequal education of the scientists and other stakeholders involved in producing and handling big data in life science that is inherently varied and complex in nature, and large in volume. Due to the interdisciplinary nature of life science research, education within this field faces numerous hurdles including institutional barriers, lack of local availability of all required expertise, as well as lack of appropriate teaching material and appropriate adaptation of curricula.}, language = {en} } @inproceedings{BeusterReiffStephan2025, author = {Beuster, Anja and Reiff-Stephan, J{\"o}rg}, title = {KI-Kooperationssysteme: Ein Forschungsansatz zur Analyse von Kooperationsnetzwerken in der Anwendung K{\"u}nstlicher Intelligenz}, series = {INFORMATIK 2025 : The Wide Open: Offenheit von Source bis Science}, booktitle = {INFORMATIK 2025 : The Wide Open: Offenheit von Source bis Science}, editor = {Lucke, Ulrike and Stieglitz, Stefan and Uebernickel, Falk and Lamprecht, Anna-Lena and Klein, Maike}, publisher = {Gesellschaft f{\"u}r Informatik e.V.}, address = {Bonn}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-20861}, pages = {1373 -- 1380}, year = {2025}, abstract = {Die digitale Transformation und das Potenzial K{\"u}nstlicher Intelligenz (KI) stellen insbesondere kleine und mittlere Unternehmen (KMU) vor komplexe Herausforderungen. KI-Technologien bieten einerseits erhebliche Potenziale f{\"u}r Innovationen und Wettbewerbsf{\"a}higkeit. Andererseits ist die Nutzung dieser Potenziale voraussetzungsreich und erfordert die Verf{\"u}gung bzw. den Aufbau von Ressourcen, wie Fachwissen, Daten, finanziellen Ressourcen und IT-Infrastruktur. KI-Kooperationen sind ein zunehmend relevantes strategisches Instrument f{\"u}r KMU, um diesen strukturellen Defiziten zu begegnen und den Unternehmen Zug{\"a}nge zu ben{\"o}tigten Ressourcen zu erm{\"o}glichen. Dar{\"u}ber hinaus k{\"o}nnen sie im Sinne der organisationalen Ambidextrie die Balance zwischen Exploration, der Suche und Erschließung neuer Handlungsfelder und Exploitation, dem Ausbau etablierter Wertsch{\"o}pfungspotenziale im Unternehmen und damit langfristig die Wettbewerbsf{\"a}higkeit des Mittelstandes unterst{\"u}tzen. Der vorgestellte Forschungsansatz erweitert das Konzept der organisationalen Ambidextrie um eine systematische Analyse von KI-Kooperationssystemen an der Schnittstelle von KI-Technologie-Anwendung, Organisations- und Innovationsentwicklung sowie der menschenzentrierten Produktion.}, language = {de} } @inproceedings{OPUS4-1342, title = {Conference Proceedings : 1st German-West African Conference on Sustainable, Renewable Energy Systems SusRes : 1st July 2020 - Kara, Togo}, editor = {Amouzou, Kou 'santa and Adanlete Adjanoh, Assiongbon and Reiff-Stephan, J{\"o}rg}, isbn = {978-3-9819225-5-4}, doi = {10.15771/978-3-9819225-5-4}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-13424}, year = {2020}, abstract = {Conference Proceedings of the 1st German-West African Conference on Sustainable, Renewable Energy Systems SusRes. 1st July 2020 - Kara, Togo.}, language = {en} } @inproceedings{ShagwiraMbuyaMwemaetal.2021, author = {Shagwira, Harrison and Mbuya, T. O. and Mwema, Fredrick M. and Herzog, Michael and Akinlabi, Esther Titilayo}, title = {Taguchi Optimization of Surface Roughness and Material Removal Rate in CNC Milling of Polypropylene + 5wt.\% Quarry Dust Composites}, series = {IOP Conference Series: Materials Science and Engineering}, volume = {1107}, booktitle = {IOP Conference Series: Materials Science and Engineering}, issn = {1757-899X}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-14022}, year = {2021}, abstract = {The Taguchi optimization technique was utilized to determine the optimal milling parameters that can be used in end face CNC milling operation of polypropylene+5wt.\% quarry dust using high-speed steel (HSS) tool. Three milling input parameters i.e. the feed rate (f), the cutting speed of the spindle (N) and the depth of cut (dc) were optimized while considering the surface roughness (Ra) of the machined composite material and the material removal rate (MRR) during machining as the responses of the experimental design. From the results, the cutting speed (100 rpm) and the feed rate (120 mm/min) were the most important control parameters which greatly influence the surface roughness at 41.4\% and 28.8\% contribution respectively. In the case of the material removal rate, the depth of cut (0.8 mm) was the dominating factor at 98\% contribution.}, language = {en} } @inproceedings{Neumann2025, author = {Neumann, Gaby}, title = {From human experts to AI agents: Agentic AI for knowledge-intense problem-solving in logistics?}, series = {Proceedings of the 26th European Conference on Knowledge Management : VOL 1}, booktitle = {Proceedings of the 26th European Conference on Knowledge Management : VOL 1}, publisher = {Academic Conferences and Publishing International}, address = {Reading}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-21223}, pages = {719 -- 727}, year = {2025}, abstract = {Logistics planning is a complex and complicated problem solving process requiring a wide range of knowledge and competence. A planning person or team represents a particular set of knowledge, skills, experience and personal attitudes. His, her or their level of competence decides about success or failure of the planning and about the quality of its results. With this, logistics planning is knowledge-based and knowledge-creating. Because of this, Knowledge Management can provide tremendous support to the planning person. Even though, there is a wide variety of (software) tools applicable to solve specific sub-problems throughout the planning process, human expertise is the key to develop creative planning solutions so far. Latest developments with regard to Artificial Intelligence (AI) might change this picture. AI is one of the most promising technological advancements, but also one of the most ambivalently discussed topics these days. It has surpassed humans at a number of tasks already and continues in doing so at new tasks in an increasing rate. Because of this, AI is capable to assist humans in many different ways. The latest boost of development moved AI application from those sophisticated communicators or task-oriented AI to intelligent agents or agentic AI allowing for autonomous, goal-driven decision-making. Hybrid approaches combine those advanced AI capabilities with human oversight, offering context-aware adaptability without full autonomy. In this way, artificial intelligence and human intelligence join forces in teams, for example, to solve complex problems creatively. Against this background, the paper analyses agentic AI with regard to its potential to support creative problem solving in a knowledge-intense field like logistics planning. Will AI agents become co-workers in logistics planning teams or can agentic AI design logistics solutions autonomously? With this, the paper focusses on chances and challenges coming with the highly dynamic evolution of AI within a complex, knowledge-intense application area where human experience, problem-solving capability and creativity is decisive. It contributes to discussions about necessary adjustments in how organizations manage their knowledge considering artificial and human intelligence.}, language = {en} } @inproceedings{SchymikStolpmann2025, author = {Schymik, Lars and Stolpmann, Alexander}, title = {Erkennung von Schadmustern an Personenverkehrsz{\"u}gen und Evaluierung der Konfidenz zur Auswahl robuster Features f{\"u}r „Predictive Maintenance" - Projekt ESPEK}, series = {Tagungsband AALE 2025 : menschenzentrierte Automation im digitalen Zeitalter}, booktitle = {Tagungsband AALE 2025 : menschenzentrierte Automation im digitalen Zeitalter}, editor = {Reiff-Stephan, J{\"o}rg and J{\"a}kel, Jens and Reichelt, Dirk}, publisher = {Hochschule f{\"u}r Technik, Wirtschaft und Kultur}, address = {Leipzig}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-20160}, pages = {171 -- 180}, year = {2025}, abstract = {Im Rahmen des Projekts ESPEK wurden H{\"a}ufigkeit und Relevanz bestimmter Sch{\"a}den an verbreiteten Waggontypen analysiert und basierend darauf im Rahmen eines Konzepts „KI-gest{\"u}tzte Inspektion" praxistaugliche, datenbasierte, durch k{\"u}nstliche Intelligenz unterst{\"u}tzte digitale L{\"o}sungen entwickelt, um Sch{\"a}den an ausgew{\"a}hlten Personenwaggons automatisiert visuell zu erkennen. Ausgehend von den bisher maßgeblich manuellen Inspektionsabl{\"a}ufen und Checklisten k{\"o}nnen selbige durch die vorgeschlagenen Software- und Hardwareautomatisierungen effizienter gestaltet werden. {\"U}bergeordnet werden die Sicherheit der Fahrg{\"a}ste erh{\"o}ht, das Problem des Fachkr{\"a}ftemangel bek{\"a}mpft sowie Ausfall- und Standzeiten reduziert, was letztlich zur besseren Auslastung des Systems Schiene insgesamt beitr{\"a}gt und Zugfahren preiswerter und p{\"u}nktlicher machen kann.}, language = {de} } @inproceedings{PaetowSzymanskiDetjeetal.2021, author = {Paetow, Clara and Szymanski, Mateusz and Detje, Johannes Siljas and Stolpmann, Alexander}, title = {A Model-Based Approach to Decarbonize an Island's Energy System}, series = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, booktitle = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, publisher = {TIB Open Publishing}, address = {Hannover}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-14952}, pages = {145 -- 153}, year = {2021}, abstract = {To achieve climate goals and contain further global warming, it is inevitable to reduce CO2 emissions especially in energy consumption. A way to do so is by integrating renewable energy sources (RES) into an energy system's power generation. However, there is no standard procedure to decarbonise a locally restricted system. Therefore, the various local conditions have to be analysed and taken into consideration. The authors propose a model-based approach to decarbonise the energy system of the island F{\"o}hr, Germany. This includes various collected data sets on local conditions such as climate data and heat and power demand. The data is used to represent the island's energy system and design a model-based solution in a simulation software. The authors identify potentials by comparing costs and revenues by addressing the deployment of different RES technologies. One finding is that heat generation causes 91 \% of CO2 emissions making it the major producer. However, with the designed solution, emissions could be reduced to a third.}, language = {en} } @inproceedings{SzymanskiRieckmannStolpmann2024, author = {Szymanski, Mateusz and Rieckmann, Olaf and Stolpmann, Alexander}, title = {Quantitative und Qualitative Untersuchung zur Akzeptanz und Gestaltung von physischer Mensch-Roboter-Kollaboration}, series = {Tagungsband AALE 2024 : Fit f{\"u}r die Zukunft: Praktische L{\"o}sungen f{\"u}r die industrielle Automation}, booktitle = {Tagungsband AALE 2024 : Fit f{\"u}r die Zukunft: Praktische L{\"o}sungen f{\"u}r die industrielle Automation}, editor = {Reiff-Stephan, J{\"o}rg and J{\"a}kel, Jens and St{\"o}cker, Christian}, publisher = {Hochschule f{\"u}r Technik, Wirtschaft und Kultur}, address = {Leipzig}, isbn = {978-3-910103-02-3}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-18549}, pages = {115 -- 121}, year = {2024}, abstract = {Dieser Beitrag beschreibt zwei Studien zur Akzeptanz eines Messroboters zur Durchf{\"u}hrung von dermatologischen In-Vivo-Messungen. Die erste Studie ist eine quantitative Online-Umfrage mit 745 Teilnehmern. Die Studie gliedert sich in drei Bereiche mit insgesamt 24 Fragen. Die Teilnehmer werden zu ihren Erfahrungen und {\"A}ngsten in Bezug auf Roboter befragt und insbesondere zu einem m{\"o}glichen Einsatz eines Messroboters f{\"u}r dermatologische In-Vivo-Studien. F{\"u}r die qualitative Studie werden insgesamt 17 Studienteilnehmer jeweils einzeln f{\"u}r ein zweist{\"u}ndiges Interview, welches in 4 Phasen gegliedert ist, eingeladen. In Phase 2 dieser Studie werden die ersten robotergest{\"u}tzten In-Vivo-Messungen an Hautarealen auf dem Unterarm der Teilnehmer durchgef{\"u}hrt. Bereits aus der quantitativen Umfrage geht hervor das die meisten (75 \%) Teilnehmer der Idee von Robotern im Messbetrieb offen gegen{\"u}ber stehen, 55,7\% bef{\"u}rworten den Einsatz sogar. W{\"a}hrend des quantitativen Interviews werden {\"A}ngste und Unsicherheiten vor und w{\"a}hrend der ersten Messung genannt und beobachtet. Alle Teilnehmer waren zur Wiederholungsmessung sehr viel sicherer im Umgang mit dem Roboter und k{\"o}nnen sich einen zuk{\"u}nftigen Einsatz vorstellen. Besondere Herausforderungen stellen sich hinsichtlich der Positionierung der Studienteilnehmer zum Roboter heraus. Die Sicherstellung einer ergonomischen Gestaltung der Roboterumgebung ist f{\"u}r physische Mensch-Roboter-Kollaboration entscheidend und wird zur Weiterentwicklung des Systems st{\"a}rker ber{\"u}cksichtigt. Weiter wurde ein 3-Stufen-Zustimmschalter zur Absicherung der Roboterbewegungen verwendet, dieser fand allerdings wenig Anklang und wurde stark kritisiert. F{\"u}r den zuk{\"u}nftigen Einsatz wird eine alternative {\"U}berwachung des direkten Arbeitsbereiches erarbeitet.}, language = {de} } @inproceedings{KupperStolpmannReiffStephan2025, author = {Kupper, Stefan and Stolpmann, Alexander and Reiff-Stephan, J{\"o}rg}, title = {Hochgeschwindigkeitsz{\"a}hlung von Maden f{\"u}r eine nachhaltige Proteinproduktion}, series = {Tagungsband AALE 2025 : menschenzentrierte Automation im digitalen Zeitalter}, booktitle = {Tagungsband AALE 2025 : menschenzentrierte Automation im digitalen Zeitalter}, editor = {Reiff-Stephan, J{\"o}rg and J{\"a}kel, Jens and Reichelt, Dirk}, publisher = {Hochschule f{\"u}r Technik, Wirtschaft und Kultur}, address = {Leipzig}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-20171}, pages = {321 -- 327}, year = {2025}, abstract = {Insekten werden aufgrund ihres Proteingehalts als eine der nachhaltigen Quellen f{\"u}r die Lebensmittelproduktion der Zukunft angesehen. Sie werden, analog zu den heutigen Zuchtbetrieben f{\"u}r Schweine und andere Nutztiere, auch in industriellen Anlagen gez{\"u}chtet. Zur Steuerung und Optimierung dieses Zuchtprozesses muss eine Erfassung der Zahl der unter gegebenen Bedingungen aufgezogenen Insekten vorgenommen werden. Im Unterschied zu Großs{\"a}ugern ist die Individuenzahl von Insekten sowie deren Larvenstadien jedoch um Magnituden gr{\"o}ßer, so dass bei der Ermittlung der Anzahl der Insekten mittel- und langfristig auf eine vollautomatisierte maschinelle Erfassung umgestellt werden muss. In dieser Arbeit wird eine Methode zur pr{\"a}zisen Z{\"a}hlung einer großen Zahl von Maden der Schwarzen Soldatenfliege (Hermetia illucens) in einem prototypischen Aufbau vorgestellt.}, language = {de} } @inproceedings{PalmeBreitheckerRieckmannetal.2024, author = {Palme, Willy and Breithecker, Janine and Rieckmann, Olaf and Stolpmann, Alexander}, title = {Gew{\"a}hrleistung der Bildkonsistenz in der Portaitfotografie: Eine technologische L{\"o}sung f{\"u}r effiziente und vergleichbare Aufnahmen}, series = {Tagungsband AALE 2024 : Fit f{\"u}r die Zukunft: Praktische L{\"o}sungen f{\"u}r die industrielle Automation}, booktitle = {Tagungsband AALE 2024 : Fit f{\"u}r die Zukunft: Praktische L{\"o}sungen f{\"u}r die industrielle Automation}, editor = {Reiff-Stephan, J{\"o}rg and J{\"a}kel, Jens and St{\"o}cker, Christian}, publisher = {Hochschule f{\"u}r Technik, Wirtschaft und Kultur}, address = {Leipzig}, isbn = {978-3-910103-02-3}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-18570}, pages = {315 -- 320}, year = {2024}, abstract = {Dieses Paper pr{\"a}sentiert das Forschungsprojekt „Intelligent Camera Unit" (ICU) der Technischen Hochschule Wildau in Kooperation mit der Beiersdorf AG zur Verbesserung von Portraitaufnahmen in Probandenstudien f{\"u}r Kosmetikprodukte. Das Hauptziel des Projekt besteht darin, Ausrichtungsfehler zu minimieren und die Vergleichbarkeit von Vorher-Nachher-Bildern zu erh{\"o}hen. Dies wird durch die Verwendung eines kollaborativen Roboters und KI-gest{\"u}tzter Bildanalyse erreicht, um pr{\"a}zise Ausrichtung und Gesichtspositionen der Probanden zu gew{\"a}hrleisten. Das entwickelte System erm{\"o}glicht effiziente und reproduzierbare Aufnahmen aus verschiedenen Winkeln und Entfernungen und bietet eine benutzerfreundliche, web-basierte Bedienoberfl{\"a}che.}, language = {de} } @inproceedings{GrossKuhlStephanetal.2023, author = {Gross, Matthias and Kuhl, Thorsten and Stephan, Frank and Li, Xiangkun and Philipp, Sebastian and Grebinyk, Anna and Khachatryan, Vitali and Qian, Houjun and Aboulbanine, Zakaria and Amirkhanyan, Zohrab and Riemer, Felix and Oppelt, Anne and Krasilnikov, Mikhail}, title = {A beam line setup for flash radiation therapy with focused electron beams at the Pitz facility at DESY in Zeuthen: basic concept and dosimetry simulations}, series = {IPAC'23 : 14th International Particle Accelerator Conference, 7-12 May 2023, Venice, Italy : proceedings}, booktitle = {IPAC'23 : 14th International Particle Accelerator Conference, 7-12 May 2023, Venice, Italy : proceedings}, editor = {Istituto Nazionale Di Fisca Nucleare,}, publisher = {JACoW Publishing}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-21132}, pages = {5000 -- 5003}, year = {2023}, abstract = {The aim of this work is to demonstrate the principal possibility to enhance the electron beam dose deposition in the depth of the sample for radiation therapy purposes. Trains of electron bunches of 22 MeV generated at PITZ are focused inside the sample using a dedicated fast deflector and a solenoid magnet. To explore the capabilities of the proposed setup, dose distributions are calculated for multiple electron bunches focused in a single point inside a water phantom. Electron beam focusing produces dose peaks with a tunable maximal dose depth which is interesting for healthy tissue sparing at the surface and enhancing treatment quality. The duration of the full bunch train is 1 ms. During this time interval, the FLASH effect could be efficiently triggered inside the irradiated target volume. Monte Carlo simulations based on the FLUKA code were performed to evaluate the depth dose curves distributions in a water phantom. Using the PITZ electron beam parameters, simulations have shown the possibility to produce a peak dose in water seven times higher than compared to the dose at the surface. Moreover, the RMS size homogeneous area around the maximal dose is approximately 25 mm.}, language = {en} } @inproceedings{KrasilnikovAboulbanineAdhikarietal.2023, author = {Krasilnikov, Mikhail and Aboulbanine, Zakaria and Adhikari, Gowri and Aftab, Namra and Asoyan, Aida and Davtyan, Hakob and Georgiev, Georgi and Good, James and Grebinyk, Anna and Gross, Matthias and Hoffmann, Andreas and Kongmon, Ekkachai and Li, Xiangkun and Lueangaramwong, Anusorn and Melkumyan, David and Mohanty, Sandeep and Niemczyk, Raffael and Oppelt, Anne and Qian, Houjun and Richard, Christopher and Schneidmiller, Evgeny and Stephan, Frank and Vashchenko, Grygorii}, title = {THz SASE FEL at PITZ: lasing at a wavelength of 100μm}, series = {IPAC'23 : 14th International Particle Accelerator Conference, 7-12 May 2023, Venice, Italy : proceedings}, booktitle = {IPAC'23 : 14th International Particle Accelerator Conference, 7-12 May 2023, Venice, Italy : proceedings}, editor = {Istituto Nazionale Di Fisca Nucleare,}, publisher = {JACoW Publishing}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-21113}, pages = {3948 -- 3951}, year = {2023}, abstract = {Development of an accelerator-based tunable THz source prototype for pump-probe experiments at the European XFEL is ongoing at the Photo Injector Test facility at DESY in Zeuthen (PITZ). The proof-of-principle experiments on the THz SASE FEL are performed utilizing the LCLS-I undulator installed in the PITZ beamline. The first lasing at a center wavelength of 100 µm was observed in the summer of 2022. The lasing of the narrowband THz source was achieved using an electron beam with an energy of ~17 MeV and a bunch charge up to several nC. Optimization of beam transport and matching resulted in the measurement of THz radiation with a pulse energy of tens of µJ, measured with pyroelectric detectors. The THz FEL gain curves were measured by means of specially designed short coils along the undulator. The results of the first characterization of the THz source at PITZ will be presented.}, language = {en} } @inproceedings{GrossHoffmannGeorgievetal.2023, author = {Gross, Matthias and Hoffmann, Andreas and Georgiev, Georgi and Kuhl, Thorsten and Li, Xiangkun and Oppelt, Anne and Boonpornprasert, Prach and Philipp, Sebastian and Grebinyk, Anna and Vashchenko, Grygorii and Aftab, Namra and Adhikari, Gowri and Richard, Christopher and Stephan, Frank and Khachatryan, Vitali and Riemer, Felix and Krasilnikov, Mikhail and Amirkhanyan, Zohrab}, title = {Comparison of measurements and simulation results of dose for the FLASH radiation therapy beamline at PITZ}, series = {IPAC'23 : 14th International Particle Accelerator Conference, 7-12 May 2023, Venice, Italy : proceedings}, booktitle = {IPAC'23 : 14th International Particle Accelerator Conference, 7-12 May 2023, Venice, Italy : proceedings}, editor = {Istituto Nazionale Di Fisca Nucleare,}, publisher = {JACoW Publishing}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-21126}, pages = {4996 -- 4999}, year = {2023}, abstract = {The high-brightness electron beam at the Photo Injector Test facility at DESY in Zeuthen (PITZ) is now also used for FLASHlab@PITZ: an R\&D platform for studying radiation biology and the FLASH effect in radiation therapy. The available parameter space of the electron beam with a momentum of 22 MeV/c allows bunch charges from 10 pC up to 5nC, bunch durations of 0.1-60ps, and bunch train lengths up to 1 ms. The number of bunches in the single train can currently be varied between 1 and 1000 bunches, with an upgrade to 4500 foreseen in 2023. Radiation biology studies require accurate dose prediction, therefore Monte Carlo simulations based on the FLUKA code were performed. According to estimations, dose delivery of 0.002 Gy (low charge case 0.1pC) and 10Gy (high charge case 5nC) is possible, if the beam is confined to a circular area with a radius of 5 mm with a lead collimator. For the Monte Carlo simulations, the experimental setup was accurately modeled, including the exit window, lead collimator, etc. Dose measurements were used to compare simulations with experiments. Dose profiles were experimentally measured with Gafchromic films and then compared with Monte Carlo simulations. The first experiments at FLASHlab@PITZ in 2023 have demonstrated flexible dose options for studying the FLASH effect and radiation biology studies.}, language = {en} } @inproceedings{LiAmirkhanyanAftabetal.2024, author = {Li, Xiangkun and Amirkhanyan, Zohrab and Aftab, Namra and Boonpornprasert, Prach and Dmytriiev, Dmytro and Frohme, Marcus and Georgiev, Georgi and Grebinyk, Anna and Gross, Matthias and Hoffmann, Andreas and Komar, Yuliia and Krasilnikov, Mikhail and Loisch, Gregor and Oppelt, Anne and Richard, Christopher and Riemer, F. and Philipp, Sebastian and Schmitz, Michael and M{\"u}ller, Frieder and Obier, Frank and Vashchenko, Grygorii and Worm, Steven and Stephan, Frank}, title = {Overview of FLASHlab@PITZ: the new R\&D platform for FLASH radiation therapy and radiation biology}, series = {Journal of Physics: Conference Series, Volume 2687, Applications of Accelerators, Technology Transfer and Industrial Relations and Outreach}, volume = {2687}, booktitle = {Journal of Physics: Conference Series, Volume 2687, Applications of Accelerators, Technology Transfer and Industrial Relations and Outreach}, publisher = {Institute of Physics Publishing (IOP)}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-18474}, year = {2024}, abstract = {An R\&D platform for electron FLASH radiation therapy and radiation biology is being prepared at the Photo Injector Test facility at DESY in Zeuthen (FLASHlab@PITZ). This platform is based on the unique beam parameters available at PITZ: ps scale electron bunches of up to 22 MeV with up to 5 nC bunch charge at MHz bunch repetition rate in bunch trains of up to 1 ms in length repeating at 1 to 10 Hz. It works together with the Technical University of Applied Sciences Wildau (TH Wildau) as partner in close vicinity for the biological resources. A startup beamline has been installed to allow dosimetry studies and irradiation experiments on chemical, biochemical and biological samples after a 60-degree dispersive arm. The measured dose and dose rates under different beam conditions and first experimental results will be reported in this paper. In addition, a dedicated beamline for FLASHlab@PITZhas been designed for better control of the high brightness electron beams. This includes a dogleg to translate the beam and a 2D kicker system to scan the tiny beam focused by quadrupoles across the samples within less than 1 ms. Simulation studies will be presented to demonstrate the extremely flexible dose parameters with various irradiation options for electron FLASH radiation therapy and radiation biology studies.}, language = {en} } @inproceedings{BadoniBonaiutoCasalbonietal.2020, author = {Badoni, Davide and Bonaiuto, Vincenzo and Casalboni, Mauro and De Matteis, Fabio and Di Giuseppe, Giovanni and Frontini, Luca and Gunnella, Roberto and Liberali, Valentino and Mai, Andreas and Paoluzzi, Giovanni and Prosposito, Paolo and Salamon, Andrea and Salina, Gaetano and Sargeni, Fausto and Schrader, Sigurd and Stabile, Alberto and Steglich, Patrick}, title = {Characterization and Tests of Different Mach-Zehnder Silicon Photonic Modulator Configurations}, series = {Photonics and Photoactive Materials}, booktitle = {Photonics and Photoactive Materials}, editor = {Prosposito, Paolo}, publisher = {Materials Research Forum LLC}, address = {Millersville, PA}, isbn = {978-1-64490-071-0}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-13731}, pages = {1 -- 5}, year = {2020}, abstract = {We designed and produced an integrated silicon photonic circuit, in a single chip with IHP SG25H4_EPIC 0.25 µm technology. A Mach-Zehnder interferometer with an alternative shape for better integration, together with a standard-shape Mach-Zehnder interferometer have been realized. In this work, preliminary results of comparative performance measurements between the two Mach-Zehnder interferometer are shown.}, language = {en} } @inproceedings{BresslerMohnke2023, author = {Breßler, Janine and Mohnke, Janett}, title = {Can a Humanoid Robot Motivate Children to Read More? Yes, It Can!}, series = {Learning and Collaboration Technologies : 10th International Conference, LCT 2023, Held as Part of the 25th HCI International Conference, HCII 2023, Copenhagen, Denmark, July 23-28, 2023, Proceedings, Part II}, booktitle = {Learning and Collaboration Technologies : 10th International Conference, LCT 2023, Held as Part of the 25th HCI International Conference, HCII 2023, Copenhagen, Denmark, July 23-28, 2023, Proceedings, Part II}, publisher = {Springer, Cham}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-21148}, pages = {271 -- 286}, year = {2023}, abstract = {The ability to read and write is an important requirement for an active participation in social life - maybe even the most important one. It is a prerequisite for education and in most cases also for professional success. So, it is important, that children learn how to read. In this paper, a case study is presented which investigates the question how humanoid robots can support the motivation of children to read. For this, we considered the following questions: Can humanoid robots, like the NAO robot from Aldebaran Robotics, motivate children to read more and with pleasure? Is there a setup which is technically stable enough to work outside a lab environment and without developer support? The underlying project uses children's curiosity about humanoid robots to create an exciting learning experience. The idea can be summarized as follows: Children read to a NAO robot and communicate to the robot about the content of the book. What started as a research project is now an application that is readily used in several public libraries in Germany. Currently, our so-called Reading-NAO can interact in German and in English. The paper also introduces the idea, its realization, practical experiences and future plans for the project.}, language = {en} } @inproceedings{VerverisErmakovaIsaakidisetal.2021, author = {Ververis, Vasilis and Ermakova, Tatiana and Isaakidis, Marios and Basso, Simone and Fabian, Benjamin and Milan, Stefania}, title = {Understanding Internet Censorship in Europe: The Case of Spain}, series = {WebSci '21: Proceedings of the 13th ACM Web Science Conference}, booktitle = {WebSci '21: Proceedings of the 13th ACM Web Science Conference}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-14105}, pages = {319 -- 328}, year = {2021}, abstract = {European Union (EU) member states consider themselves bulwarks of democracy and freedom of speech. However, there is a lack of empirical studies assessing possible violations of these principles in the EU through Internet censorship. This work starts addressing this research gap by investigating Internet censorship in Spain over 2016-2020, including the controversial 2017 Catalan independence referendum. We focus, in particular, on network interference disrupting the regular operation of Internet services or contents. We analyzed the data collected by the Open Observatory of Network Interference (OONI) network measurement tool. The measurements targeted civil rights defending websites, secure communication tools, extremist political content, and information portals for the Catalan referendum. Our analysis indicates the existence of advanced network interference techniques that grow in sophistication over time. Internet Service Providers (ISPs) initially introduced information controls for a clearly defined legal scope (i.e., copyright infringement). Our research observed that such information controls had been re-purposed (e.g., to target websites supporting the referendum). We present evidence of network interference from all the major ISPs in Spain, serving 91\% of mobile and 98\% of broadband users and several governmental and law enforcement authorities. In these measurements, we detected 16 unique blockpages, 2 Deep Packet Inspection (DPI) vendors, and 78 blocked websites. We also contribute an enhanced domain testing methodology to detect certain kinds of Transport Layer Security (TLS) blocking that OONI could not initially detect. In light of our experience analyzing this dataset, we also make suggestions on improving the collection of evidence of network interference.}, language = {en} } @inproceedings{ChepurnaGrebinykPetrushkoetal.2019, author = {Chepurna, Oksana and Grebinyk, Anna and Petrushko, Yulia and Prylutska, Svitlana and Grebinyk, Sergii and Yashchuk, Valeriy and Matyshevska, Olga and Ritter, Uwe and Dandekar, Thomas and Frohme, Marcus and Qu, Junle and Ohulchanskyy, Tymish Y.}, title = {LED-based portable light source for photodynamic therapy}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-14778}, year = {2019}, abstract = {Photodynamic therapy (PDT) employs light activation of tissue-localized photosensitizer in an oxygen-dependent process which initiates oxidative stress, inflammation, and cell death. Laser systems, which are mostly used in PDT as light sources can be costly and oversized. light-emitting diodes (LEDs) equipment has a high potential to simplify technical part of phototriggered therapies and to reduce its costs. We develop the LED-based system that includes the control and irradiation units. The system provides the same power density at any irradiation point. Among the advantages of the device is a possibility to change the irradiation area and tune the irradiation dose. PDT experiments with cancer cells in vitro treated with two different photosensitizers demonstrated a possibility to use the developed LED-based system as a low-cost light source in PDT.}, language = {en} } @inproceedings{PohleBaumannPulweretal.2019, author = {Pohle, Ulrike and Baumann, Elisabeth and Pulwer, Silvio and Villringer, Claus and Zhang, Edward and Gerhardt, Holger and Laufer, Jan}, title = {Development of a backward-mode photoacoustic microscope using a Fabry-P{\´e}rot sensor}, publisher = {SPIE}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-15349}, pages = {594 -- 598}, year = {2019}, abstract = {Optical-resolution photoacoustic microscopy (PAM) has been shown to enable the acquisition of high resolution (μm) functional and anatomical images. For backward-mode operation, conventional piezoelectric ultrasound transducers need to be placed far away from the signal source due to their opacity and size. This can result in reduced acoustic sensitivity. Planar Fabry-Perot polymer film interferometer (FPI) sensors have the potential to overcome this limitation since they are transparent to the excitation wavelength, can be placed immediately adjacent to the signal source for high acoustic sensitivity, and offer a broadband frequency response (0 -50 MHz). In this study, we present a high frame rate, backward-mode OR-PAM system based on a planar FPI ultrasound sensor. A ns-pulsed laser provides excitation pulses (<200 nJ, maximum pulse repetition frequency = 200 kHz, 532 nm) to generate photoacoustic waves that are detected using a planar FPI sensor interrogated at 765-781 nm. For backwardmode operation and highest acoustic sensitivity, the excitation and interrogation beams are coaxially aligned and rasterscanned. The optical transfer function of the sensor, the spatial resolution and the detection sensitivity were determined to characterise the set-up. Images of a leaf phantom and first in vivo images of zebrafish larvae were acquired. This approach will enable fast 3D OR-PAM with high resolution and high sensitivity for functional and molecular imaging applications. FPI-based ultrasound detection also has the potential to enable dual-mode optical- and acousticresolution PAM and the integration of photoacoustic imaging with purely optical modalities such as multi-photon microscopy.}, language = {en} } @inproceedings{BehrischHartwig2022, author = {Behrisch, Michael and Hartwig, Pauline}, title = {A comparison of SUMO's count based and countless demand generation tools}, series = {SUMO User Conference 2021}, booktitle = {SUMO User Conference 2021}, editor = {Deutsches Zentrum f{\"u}r Luft- und Raumfahrt e.V. (DLR),}, publisher = {TIB Open Publishing}, address = {Hannover}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-18219}, pages = {125 -- 131}, year = {2022}, abstract = {There are already several tools available to generate traffic demand for the microscopic simulation suite SUMO. This paper focuses on setting up a simulation scenario for the peak hour in a small conurbation when there are vehicle counts available for the major streets. We describe tools which are part of SUMO or available as open source and compare their results with the real traffic counts as well as with the outcome of countless demand generation.}, language = {en} } @inproceedings{WalterGuentherPrelletal.2023, author = {Walter, Elias Fabian and G{\"u}nther, Norman and Prell, Bastian and Wilbers, Simon and Reiter, Philipp and Reiff-Stephan, J{\"o}rg and Berger, Ulrich}, title = {Optimierung visueller Benutzeroberfl{\"a}chen zur Stressreduzierung}, series = {Tagungsband AALE 2023 : Mit Automatisierungstechnik gegen den Klimawandel}, booktitle = {Tagungsband AALE 2023 : Mit Automatisierungstechnik gegen den Klimawandel}, publisher = {Hochschule f{\"u}r Technik, Wirtschaft und Kultur}, address = {Leipzig}, isbn = {978-3-910103-01-6}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-17163}, pages = {1 -- 10}, year = {2023}, abstract = {Durch die Menschzentrierung in der Industrie 5.0 sollten bestehende Ans{\"a}tze hinterfragt und gepr{\"u}ft werden. Gerade der, durch die Digitalisierung hervorgerufene, Technostress sollte neben dem Fachkr{\"a}ftemangel einen zunehmenden Betrachtungsfaktor im Produktionsumfeld erhalten. Da trotz bisheriger Maßnahmen eine stetige Zunahme von Stress zu verzeichnen ist. Auff{\"a}llig sind dabei die Arbeitsunf{\"a}higkeits-Fehltage, welche im letzten Jahr um weitere 6 \% bzw. um 18,2 Fehltage gestiegen sind. Womit durchschnittlich jede Erwerbsperson 3,17 Tage unter der Diagnose „psychische St{\"o}rung" krankgeschrieben wurde. Um diesen Trend entgegenzuwirken, betrachtet der Beitrag die M{\"o}glichkeiten der Software-Ergonomie, womit die Gestaltung von HMIs (Mensch-Maschinen-Interfaces) den Menschen gezielter ber{\"u}cksichtigt um etwaige Belastungen zu reduzieren. Im Rahmen der komplement{\"a}ren Industrie 4.0 und der einhergehenden Informationsflut, bestimmen immer komplexer werdende Schnittstellen und Bedienoberfl{\"a}chen einen Großteil des Arbeitsalltags. Diese erm{\"o}glichen den Anwenderinnen und Anwendern neben einem schnellen {\"U}berblick {\"u}ber Maschinendaten, Prozessabl{\"a}ufe und Handlungsempfehlungen die M{\"o}glichkeit zur einfachen Bedienung der technischen Anlagen. Der hier vorgestellte Ansatz betrachtet am Beispiel einer Bestandsanlage, wo sich Potenziale in der Stressreduzierung im Bereich der visuellen Benutzerschnittstellen befinden und welche Auswirkungen eine Ver{\"a}nderung der Leitf{\"u}hrung erm{\"o}glicht. Hierf{\"u}r wurde eine mehrphasige Studie durchgef{\"u}hrt dessen Ergebnisse im Bereich des Eye-Trackings sowie anhand von Vitalwerten im vorliegenden Beitrag diskutiert werden.}, language = {de} } @inproceedings{VandenhoutenHermerschmidtFiebelkorn2017, author = {Vandenhouten, Ralf and Hermerschmidt, Andreas and Fiebelkorn, Richard}, title = {Design and quality metrics of point patterns for coded structured light illumination with diffractive optical elements in optical 3D sensors}, series = {Proceedings of SPIE}, volume = {10335}, booktitle = {Proceedings of SPIE}, issn = {1996-756X}, doi = {10.1117/12.2270248}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-9798}, year = {2017}, abstract = {Structured light has become a widespread technique for the development of camera-based 3D sensors. The structured illumination provides texture to homogeneous objects and thus allows for the reliable determination of the disparity of each object point in a stereo-camera setting. Even a monocular 3D sensor is possible if the light projector has a fixed relative position to the camera and if the structured light is coded, i.e. the position within the whole light pattern can be reconstructed uniquely from a small local window of the pattern, the uniqueness window. Coded patterns with such a uniqueness property are called Perfect SubMaps (PSM). In our paper we focus on the design and evaluation of the subset of symmetric isolated binary toroidal PSMs (SIBTPSM) for structured light patterns, because of their beneficial properties with respect to the signal-to-noise ratio and the use with laser light sources and DOEs. We define several figures of merit that are relevant for the practical use of PSMs in a 3D sensor: the PSM size, the size of the uniqueness window, the Hamming distance, the density, and the homogeneity. We have created SIBTPSMs using our own dedicated algorithms and have designed and fabricated DOEs that produce these patterns with large fan angles of 61° × 47° when used with near-infrared diode lasers (λ = 830nm). We analyze the influence of these characteristics on the 3D measurement process by theory, simulations, and experiments. The patterns of publicly available DOEs based on SIBTPSMs are used for comparison and reference. Our results show that the PSM width, the uniqueness window size, the minimum and average Hamming distances, and the uniformity have strong impact on either speed or quality of the 3D reconstruction, whereas the point density and the PSM height are of minor importance.}, language = {en} } @inproceedings{FuenningPeczekKrohetal.2025, author = {F{\"u}nning, Tabea and Peczek, Anna and Kroh, Aleksandra and Mai, Christian and Paul, Martin and Thomsen, Florian and Tannenberg, Robert and Schumann, Christoph and Weller, Michael G. and Mai, Andreas and Steglich, Patrick}, title = {Optimization of local backside released micro-ring resonators for sensing applications using silicon photonic integrated circuits in a SOI technology}, series = {Proceedings of SPIE : Optical Sensors 2025}, volume = {13527}, booktitle = {Proceedings of SPIE : Optical Sensors 2025}, editor = {Baldini, Francesco and Homola, Jiri and Lieberman, Robert A.}, publisher = {SPIE}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-20449}, year = {2025}, abstract = {Photonic micro-ring resonators (MRR) are widely studied for their high sensitivity across applications like environmental monitoring, healthcare, and chemical analysis. Their evanescent field sensing requires partially unembedded waveguides compatible with CMOS processing. Our approach uses local backside etching with an additional buried oxide (BOX) etch to release waveguides while preserving the back-end of line (BEOL) structure, enabling spatial separation of the sensing area and electronics. The BOX etch critically affects sensor performance, as waveguide surface roughness can alter MRR properties and coupling. We analyzed MRR design variations, comparing wet and dry etching techniques for their effects on optical performance across rib and strip waveguides in quasi-TE and quasi-TM modes. Wafer-level measurements show that backside-released MRR achieve high extinction ratios with slightly reduced quality factors, advancing high-sensitivity photonic sensors.}, language = {en} } @inproceedings{PulwerFiebelkornZeschetal.2019, author = {Pulwer, Silvio and Fiebelkorn, Richard and Zesch, Christoph and Steglich, Patrick and Villringer, Claus and Villasmunta, Francesco and Gedat, Egbert and Handrich, Jan and Schrader, Sigurd and Vandenhouten, Ralf}, title = {Endoscopic orientation by multimodal data fusion}, series = {Proc. SPIE 10931, MOEMS and Miniaturized Systems XVIII}, booktitle = {Proc. SPIE 10931, MOEMS and Miniaturized Systems XVIII}, issn = {1996-756X}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-11420}, year = {2019}, abstract = {To improve the feasibility of endoscopic inspection processes we developed a system that provides online information about position, orientation and viewing direction of endoscopes, to support the analysis of endoscopic images and to ease the operational handling of the equipment. The setup is based on an industrial endoscope consisting of a camera, various MEMS and multimodal data fusion. The software contains algorithms for feature and geometric structure recognition as well as Kalman filters. To track the distal end of the endoscope and to generate 3D point cloud data in real time the optical and photometrical characteristics of the system are registered and the movement of the endoscope is reconstructed by using image processing techniques.}, language = {en} } @inproceedings{ZeschSchraderProspositoetal.2019, author = {Zesch, Christoph and Schrader, Sigurd and Prosposito, Paolo and Lux, Oliver and Eichler, Hans J.}, title = {Raman lasers for trace gas detection}, publisher = {SPIE}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-15351}, pages = {114 -- 119}, year = {2019}, abstract = {The emission of commercial solid-state lasers is shifted by Raman lasers to selected wavelengths suitable for trace gas detection. High power Raman lasers based on Ba(NO3)2, diamond and silicon detect CO2, O3 and H2O. Raman lasers base on the physical effect of stimulated Raman scattering. Two new Raman crystals (Spodumene and LuAlO3) are investigated and their SRS-spectra is shown.}, language = {en} } @inproceedings{TannenbergPaulFuenningetal.2025, author = {Tannenberg, Robert and Paul, Martin and F{\"u}nning, Tabea and Schumann, Christoph and Weller, Michael G. and Steglich, Patrick}, title = {Multichannel real-time detection of biomarkers with highly miniaturized photonic microchips}, series = {Proceedings of SPIE : Optical Sensors 2025}, volume = {13527}, booktitle = {Proceedings of SPIE : Optical Sensors 2025}, editor = {Baldini, Francesco and Homola, Jiri and Lieberman, Robert A.}, publisher = {SPIE}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-20456}, year = {2025}, abstract = {The development of novel photonic integrated microchips (PIC) is a promising approach to allow for the convenient detection of key biomarkers in complex matrices through multichannel real-time analysis in a highly compact package. This study reports the successful development and application of a backside released CMOS chip designed for the multichannel real-time detection of biomarkers. Operating at the C-band at approx. 1550 nm, the microchip features three dedicated detection sensors in addition to a reference sensor, enabling simultaneous analysis of multiple biomarkers. The compact and highly miniaturized design of this microchip, with a footprint of just 1 mm², positions it as promising candidate for point-of-care diagnostics and personalized medicine applications. This technology opens a path to transform biomarker detection across various medical fields, offering rapid, reliable, and cost-effective diagnostic solutions. In conclusion, the presented multichannel photonic microchips signify a substantial leap forward in real-time biomarker detection, providing a highly capable platform for future research and clinical applications.}, language = {en} } @inproceedings{VillasmuntaSteglichVillringeretal.2024, author = {Villasmunta, Francesco and Steglich, Patrick and Villringer, Claus and Schrader, Sigurd and Schenk, Harald and Mai, Andreas and Regehly, Martin}, title = {Design, fabrication, and characterization of integrated optical through-silicon waveguides for 3D photonic interconnections}, series = {Optical Interconnects XXIV}, volume = {12892}, booktitle = {Optical Interconnects XXIV}, editor = {Chen, Ray T. and Schr{\"o}der, Henning}, publisher = {Society of Photo-Optical Instrumentation Engineers (SPIE)}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-19759}, year = {2024}, abstract = {In the context of an ever-growing volume of data generated by established and emerging technologies, such as 5G, the Internet of Things, artificial intelligence, machine learning, blockchain, and virtual reality, faster communication speed is demanded by data centers and high-performance computing. Transceiver requirements surged from 100 to 400 Gb/s and beyond. In this scenario, photonics aims to enable Tb/s optical communication at energies below 1 pJ/bit. Targeting higher communication rates while maintaining a low power budget can significantly benefit from 3D photonic chip architectures. This paper presents the simulation-based design, fabrication, and characterization of a monolithically integrated optical through-silicon waveguide that facilitates the connection between different surfaces of a silicon chip. Deep reactive ion etching was employed in both the Bosch and Cryogenic variants to evaluate the effect of sidewall roughness on propagation losses. The mechanical stability of the waveguide was ensured by interrupting the annular trench with a bridging structure. The high-refractive-index contrast to air provides tight light confinement for a core size of up to 50 μm and multimode operation at 1550 nm. The morphology was characterized using scanning electron microscopy (SEM), and optical transmission characterization was performed using relative power loss measurements. A tunable laser source was buttcoupled to a waveguide to analyze light transmission efficiency. Preliminary measurements using single-mode fiber show that the transmitted values exceeded 99\% for all structures.}, language = {en} } @inproceedings{KleinsorgeFauckKupper2025, author = {Kleinsorge, Alexander and Fauck, Alexander and Kupper, Stefan}, title = {A Novel Exponential Continuous Learning Rate Adaption Gradient Descent Optimization Method}, series = {Wildauer Konferenz f{\"u}r K{\"u}nstliche Intelligenz 2025 (WiKKI25)}, booktitle = {Wildauer Konferenz f{\"u}r K{\"u}nstliche Intelligenz 2025 (WiKKI25)}, editor = {Reiff-Stephan, J{\"o}rg and Beuster, Anja}, publisher = {TIB Open Publishing}, address = {Hannover}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-20785}, year = {2025}, abstract = {We present two novel, fast gradient based optimizer algorithms with dynamic learning rate. The main idea is to adapt the learning rate α by situational awareness, mainly striving for orthogonal neighboring gradients. The method has a high success and fast convergence rate and relies much less on hand-tuned hyper-parameters, providing greater universality. It scales linearly (of order O(n)) with dimension and is rotation invariant, thereby overcoming known limitations. The method is presented in two variants C2Min and P2Min, with slightly different control. Their impressive performance is demonstrated by experiments on several benchmark data-sets (ranging from MNIST to Tiny ImageNet) against the state-of-the-art optimizers Adam and Lion.}, language = {en} } @inproceedings{Herold2022, author = {Herold, Marcel}, title = {Digitalisierung des Gesundheitssektor: Analyse der digitalen Kompetenzen von {\"A}rzten}, series = {Open Conference Proceedings}, volume = {2}, booktitle = {Open Conference Proceedings}, publisher = {TIB Open Publishing}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-17600}, pages = {9 -- 13}, year = {2022}, abstract = {The shortage of skilled workers in the health sector is accelerating digitalisation, which is increasing the demands on staff. The increasing technical possibilities are changing the necessary competences required of physicians in the direction of digitalisation. Therefore, in personnel recruitment, digital competences should already be considered in job advertisements in order to be able to cope with the future challenges. This paper investigates to what extent a) digital competences have already found their way into the job profiles of physicians on the market and b) whether these can be meaningfully extracted through a data-driven methodological approach. For this purpose, 1707 job advertisements are evaluated using Latent Semantic Analysis (LSA). The different methodological approaches within the LSA show that there is hardly any focus on digital competences in the health sector in job advertisements.}, language = {de} } @inproceedings{MelnykZhouSchottenetal.2023, author = {Melnyk, Sergiy and Zhou, Qiuheng and Schotten, Hans D. and R{\"u}ther-Kindel, Wolfgang and Quaeck, Fabian and Stuckert, Nick and Vilter, Robert and Gebauer, Lisa and Galkow-Schneider, Mandy and Friese, Ingo and Dr{\"u}sedow, Steffen and Pfandzelter, Tobias and Malekabbasi, Mohammadreza and Bermbach, David and Bassbouss, Louay and Zoubarev, Alexander and Neparidze, Andy and Kritzner, Arndt and Hartbrich, Jakob and Raake, Alexander and Zschau, Enrico and Schwahn, Klaus-J{\"u}rgen}, title = {6G NeXt — Joint Communication and Compute Mobile Network: Use Cases and Architecture}, series = {Kommunikation in der Automation : 14. Jahreskolloquium, 21./22.11.2023, Magdeburg}, booktitle = {Kommunikation in der Automation : 14. Jahreskolloquium, 21./22.11.2023, Magdeburg}, publisher = {Otto-von-Guericke-Universit{\"a}t Magdeburg}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-19163}, pages = {10}, year = {2023}, abstract = {The research on the new generation mobile networks is currently in the phase of defining the key technologies to make 6G successful. Hereby, the research project 6G NeXt is aiming to provide a tight integration between the communication network, consisting of the radio access as well as backbone network, and processing facilities. By the concept of split computing, the processing facilities are distributed over the entire backbone network, from centralised cloud to the edge cloud at a base station. Based on two demanding use cases, Smart Drones and Hologradic Communication, we investigate a joint communication and compute architecture that will make the application of tomorrow become reality.}, language = {en} } @inproceedings{BreitheckerSzymanskiStolpmann2025, author = {Breithecker, Janine and Szymanski, Mateusz and Stolpmann, Alexander}, title = {Entwicklung eines robotergest{\"u}tzten Systems zur standardisierten Applikation von Hautpflegeprodukten}, series = {Tagungsband AALE 2025 : menschenzentrierte Automation im digitalen Zeitalter}, booktitle = {Tagungsband AALE 2025 : menschenzentrierte Automation im digitalen Zeitalter}, editor = {Reiff-Stephan, J{\"o}rg and J{\"a}kel, Jens and Reichelt, Dirk}, publisher = {Hochschule f{\"u}r Technik, Wirtschaft und Kultur}, address = {Leipzig}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-20150}, pages = {387 -- 394}, year = {2025}, abstract = {In diesem Beitrag wird ein System zur automatisierten Applikation von Hautpflegeprodukten vorgestellt, das speziell f{\"u}r dermatologische Studien entwickelt wird. Ziel ist es, die Variabilit{\"a}ten bei der manuellen Cremeapplikation zu reduzieren und die Reproduzierbarkeit von Studienergebnissen zu verbessern. Die Grundlage des Systems bildet ein kollaborativer Roboter (Cobot), der mit einer pr{\"a}zisen Kraftregelung und Echtzeit-Bildverarbeitung ausgestattet ist. Diese Kombination erm{\"o}glicht die dynamische Anpassung an unterschiedliche Hautareale und eine gleichm{\"a}ßige Verteilung von Cremes und Lotionen. Der Entwicklungsprozess umfasste die Konstruktion eines spezialisierten Endeffektors f{\"u}r das Verteilen der Creme, der mit Kraftsensorik und austauschbaren Elementen f{\"u}r hygienische Anwendungen ausgestattet ist, sowie die Integration einer Eppendorf Multipette M4 zur pr{\"a}zisen Dosierung als wechselbarer Endeffektor am Cobot. Erg{\"a}nzt wird das System durch eine Intel RealSense Kamera, die mithilfe von Farb- und Tiefenbildern eine zuverl{\"a}ssige Erkennung von Hand- und Armpositionen gew{\"a}hrleistet. Erste Tests zeigen, dass das System eine exakte und reproduzierbare Applikation erm{\"o}glicht, wobei die Sicherheit und Benutzerfreundlichkeit im Fokus stehen. Die vorgestellten Validierungsstrategien und geplanten Nutzerstudien sollen die Funktionalit{\"a}t weiter optimieren und das Potenzial f{\"u}r den Einsatz in dermatologischen Studien unterstreichen. Dieses Projekt stellt einen bedeutenden Schritt in Richtung Automatisierung und Standardisierung in der dermatologischen Forschung dar.}, language = {de} } @inproceedings{SzymanskivandeSandRieckmannetal.2023, author = {Szymanski, Mateusz and van de Sand, Ron and Rieckmann, Olaf and Stolpmann, Alexander}, title = {Automatisierte Erkennung von Messarealen bei robotergest{\"u}tzten In Vivo Messungen}, series = {Tagungsband AALE 2023 : Mit Automatisierungstechnik gegen den Klimawandel}, booktitle = {Tagungsband AALE 2023 : Mit Automatisierungstechnik gegen den Klimawandel}, publisher = {Hochschule f{\"u}r Technik, Wirtschaft und Kultur}, address = {Leipzig}, isbn = {978-3-910103-01-6}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-17118}, pages = {1 -- 12}, year = {2023}, abstract = {Dieser Beitrag schl{\"a}gt ein Bildverarbeitungsmodell zur automatisierten Bestimmung von Messarealen bei robotergest{\"u}tzten In Vivo Messungen vor. Es wird angenommen, dass moderne Verfahren der Deep-Learning-Objekterkennung in der Lage sind die einzelnen Areale wiederholbar genau genug zu erkennen, um die ben{\"o}tigten Messareale im dreidimensionalen Raum einzupassen. F{\"u}r das Einpassen werden Tiefeninformationen aus einer stereoskopischen Kamera verwendet. Weiter wird untersucht inwiefern diese Tiefeninformationen als zus{\"a}tzlicher Eingang f{\"u}r die Deep-Learning-Modelle verwendet werden k{\"o}nnen. Hierf{\"u}r wird ein Konzept ausgearbeitet, ein Datensatz erstellt und Modelle zur Objekterkennung in verschiedenen Implementierungen trainiert. Das Verwenden von Tiefeninformationen f{\"u}hrt zu einer besseren Generalisierbarkeit der Modelle, insbesondere auf t{\"a}towierten Hautarealen. Das Bildverarbeitungsmodell erreicht beim Einpassen der Messareale eine gemittelte Wiederholgenauigkeit bzw. Abweichung von 6, 1 mm bei einer Bildwiederholrate von 2, 3 bis 3, 3 Bildern die Sekunde.}, language = {de} } @inproceedings{SzymanskivandeSandTauscheretal.2021, author = {Szymanski, Mateusz and van de Sand, Ron and Tauscher, Esther and Rieckmann, Olaf and Stolpmann, Alexander}, title = {Concept Towards Segmenting Arm Areas for Robot-Based Dermatological In Vivo Measurements}, series = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, booktitle = {2nd German-West African Conference on Sustainable, Renewable Energy Systems (SusRES2021)}, publisher = {TIB Open Publishing}, address = {Hannover}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-14986}, pages = {217 -- 228}, year = {2021}, abstract = {Dermatological in vivo measurements are used for various purposes, e.g. health care, development and testing of skin care products or claim support in marketing. Especially for the last two purposes, in vivo measurements are extensive due to the quantity and repeatability of the measurement series. Furthermore, they are performed manually and therefore represent a nonnegligible time and cost factor. A solution to this is the implementation of collaborative robotics for the measurement execution. Due to various body shapes and surface conditions, common static control procedures are not applicable. To solve this problem, spatial information obtained from a stereoscopic camera can be integrated into the robot control process. However, the designated measurement area has to be detected and the spatial information processed. Therefore the authors propose a concept towards segmenting arm areas through a CNN-based object detector and their further processing to perform robot-based in vivo measurements. The paper gives an overview of the utilization of RGB-D images in 2D object detectors and describes the selection of a suitable model for the application. Furthermore the creation, annotation and augmentation of a custom dataset is presented.}, language = {en} } @inproceedings{BreitheckerPalmeStolpmann2023, author = {Breithecker, Janine and Palme, Willy and Stolpmann, Alexander}, title = {Entwicklung einer mobilen automatisierten Prozesserweiterung f{\"u}r einen Etikettierarbeitsplatz}, series = {Tagungsband AALE 2023 : Mit Automatisierungstechnik gegen den Klimawandel}, booktitle = {Tagungsband AALE 2023 : Mit Automatisierungstechnik gegen den Klimawandel}, publisher = {Hochschule f{\"u}r Technik, Wirtschaft und Kultur}, address = {Leipzig}, isbn = {978-3-910103-01-6}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-17129}, pages = {1 -- 9}, year = {2023}, abstract = {Die Corona-Pandemie und der stetig steigende Fachkr{\"a}ftemangel zwingen viele Unternehmen zum Umdenken. Kollaborative Roboter finden immer mehr Einzug in kleine und mittelst{\"a}ndische Unternehmen und {\"u}bernehmen sich wiederholende, nicht ergonomische und monotone Arbeiten und heben das bestehende Personal in ganz neue Verantwortungsaufgaben. Die Automatisierung h{\"a}lt immer mehr Einzug und gewinnt branchenweit deutlich mehr an Bedeutung. In diesem Projekt, entstanden im Rahmen einer Bachelorarbeit [1], wird nach der Kl{\"a}rung der Grundlagen die Implementierung eines kollaborativen Roboters in einem Applizierprozess beschrieben und auf die Schritte von Aufbau bis hin zum funktionierenden, vollautomatischen Prozess eingegangen. Der Cobot wird anhand von mehreren Testszenarien auf seine Funktion hin evaluiert und auf Prozesstauglichkeit erprobt.}, language = {de} } @inproceedings{DetjeMeissnerStolpmann2022, author = {Detje, Johannes Siljas and Meißner, Jan-Eric and Stolpmann, Alexander}, title = {Entwicklung und Einsatz von Codegenerierungssoftware zur Effizienzsteigerung bei der Prozessanlagenautomatisierung}, series = {Tagungsband AALE 2022}, booktitle = {Tagungsband AALE 2022}, publisher = {Hochschule f{\"u}r Technik, Wirtschaft und Kultur}, address = {Leipzig}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-15790}, pages = {193 -- 202}, year = {2022}, abstract = {Die Programmierung von SPS-Systemen erfolgt haupts{\"a}chlich h{\"a}ndisch, obwohl große Teile des Programmcodes sehr {\"a}hnlich sind und sich h{\"a}ufig nur durch die eingesetzten Variablen unterscheiden. Der Beitrag befasst sich mit der Entwicklung und Testung einer Codegenerierungssoftware f{\"u}r das TIA Portal, um den Zeitaufwand der Programmierung zu reduzieren und Fl{\"u}chtigkeitsfehler zu vermeiden.}, language = {de} } @inproceedings{FoersterStolpmann2023, author = {Foerster, Tim and Stolpmann, Alexander}, title = {Machbarkeitsstudie zur Einf{\"u}hrung einer kameragest{\"u}tzten Brandfr{\"u}herkennung an einer Coilbox eines Warmwalzwerkes}, series = {Tagungsband AALE 2023 : Mit Automatisierungstechnik gegen den Klimawandel}, booktitle = {Tagungsband AALE 2023 : Mit Automatisierungstechnik gegen den Klimawandel}, publisher = {Hochschule f{\"u}r Technik, Wirtschaft und Kultur}, address = {Leipzig}, isbn = {978-3-910103-01-6}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-17148}, pages = {1 -- 10}, year = {2023}, abstract = {Zur L{\"o}sung des Problems der Einf{\"u}hrung einer Brandfr{\"u}herkennung an einer Anlage mit erheblichen Fl{\"a}chen an W{\"a}rmestrahlung und Temperaturen um 1.100 Grad Celsius, wird der Einsatz von infraroter und visueller Kameratechnik und Bildverarbeitungssystemen in einer Machbarkeitsstudie er{\"o}rtert und als Vorlage zur Umsetzung gebracht. Hierf{\"u}r m{\"u}ssen alle technischen Randbedingungen der baulichen Anlage, die Kosten und auch die organisatorischen Aspekte ermittelt und bewertet werden. Auf Basis von St{\"o}rfallszenarien wurden Brandversuche durchgef{\"u}hrt und in thermographischer und visueller Bildgebung ausgewertet. Entscheidend war die signifikante Abgrenzung eines Feuers vom anlagenspezifischen ungest{\"o}rten Zustand.}, language = {de} } @inproceedings{AnlaufStolpmann2023, author = {Anlauf, Fenja and Stolpmann, Alexander}, title = {Individualisierbare, webbasierte Benutzerschnittstelle zur {\"U}berwachung von Industrieprozessen}, series = {Tagungsband AALE 2023 : Mit Automatisierungstechnik gegen den Klimawandel}, booktitle = {Tagungsband AALE 2023 : Mit Automatisierungstechnik gegen den Klimawandel}, publisher = {Hochschule f{\"u}r Technik, Wirtschaft und Kultur}, address = {Leipzig}, isbn = {978-3-910103-01-6}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-17135}, pages = {1 -- 9}, year = {2023}, abstract = {Im Rahmen eines Projektes zur Applikation der Pr{\"a}skriptiven Analytik f{\"u}r die dynamische Prozessf{\"u}hrung von intelligenten K{\"a}lteanlagen wurde eine webbasierte Software mit einer anwenderfreundlichen und individualisierbaren Benutzerschnittstelle zur {\"U}berwachung und Regelung umgesetzt. Als Teilprojekt wurde ein Softwarepaket entwickelt, welches eine konfigurierbare Anlagenvisualisierung f{\"u}r diese Benutzerschnittstelle umsetzt. Beim Entwurf und der Implementierung der Software wurde auf einen modularen Aufbau geachtet, sodass die Software leicht erweiterbar und aus auswechselbaren, unabh{\"a}ngigen Komponenten zusammengesetzt ist.}, language = {de} } @inproceedings{KupperFiebelkornStolpmannetal.2026, author = {Kupper, Stefan and Fiebelkorn, Richard and Stolpmann, Alexander and Reiff-Stephan, J{\"o}rg}, title = {Robuste Lokalisierung und Pfadplanung auf verschiedenen Gr{\"o}ßenskalen durch fraktale Landmarken}, series = {Tagungsband AALE 2026: Mechatronische Systeme f{\"u}r die Automatisierung: Fortschritt durch Pr{\"a}zision und Qualit{\"a}t}, booktitle = {Tagungsband AALE 2026: Mechatronische Systeme f{\"u}r die Automatisierung: Fortschritt durch Pr{\"a}zision und Qualit{\"a}t}, publisher = {Hochschule f{\"u}r Technik, Wirtschaft und Kultur Leipzig}, url = {http://nbn-resolving.de/urn:nbn:de:kobv:526-opus4-21370}, pages = {1 -- 10}, year = {2026}, abstract = {In diesem Beitrag wird der Einsatz fraktaler Landmarken zur kamerabasierten Bestimmung von Position und Orientierung einer autonomen robotischen Plattform untersucht. Die Plattform wird dabei innerhalb eines digitalen Zwillings in einem realit{\"a}tsnahen Szenario simuliert. Ziel ist die robuste und wiederholgenaue Verfolgung einer vom Anwender vorgegebenen Referenztrajektorie. Die in dieser Arbeit genutzen fraktalen Landmarken erm{\"o}glichen durch ihre multiskalige Struktur eine zuverl{\"a}ssige Detektion und Posenbestimmung {\"u}ber einen großen Entfernungsbereich hinweg und adressieren damit die Skalierungsprobleme konventioneller Landmarken. In Kombination mit einer splinebasierten Pfadplanung und einer echtzeitf{\"a}higen Simulation werden die Auswirkungen der Landmarkengeometrie, der Pfadf{\"u}hrung sowie von Bildrauschen auf die Lokalisierungsgenauigkeit analysiert. Die Ergebnisse zeigen, dass der vorgestellte Ansatz eine stabile Posenbestimmung entlang der geplanten Trajektorie erlaubt und sich insbesondere f{\"u}r Anwendungen mit variierenden Arbeitsabst{\"a}nden eignet.}, language = {de} }