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Nutzung nachwachsender Rohstoffe bei der Herstellung thermoplastischer Elastomere aus Folgeprodukten der Olefinmetathese
No full textDetecting Sexism in German Online Newspaper Comments with Open-Source Text Embeddings (Team GDA, GermEval2024 Shared Task 1: GerMS-Detect, Subtasks 1 and 2, Closed Track)
No full textSexism in online media comments is a pervasive challenge that often manifests subtly, complicating moderation efforts as interpretations of what constitutes sexism can vary among individuals. We study monolingual and multilingual open-source text embeddings to reliably detect sexism and misogyny in Germanlanguage online comments from an Austrian newspaper. We observed classifiers trained on text embeddings to mimic closely the individual judgements of human annotators. Our method showed robust performance in the GermEval 2024 GerMS-Detect Subtask 1 challenge, achieving an average macro F1 score of 0.597 (4th place, as reported on Codabench). It also accurately predicted the distribution of human annotations in GerMS-Detect Subtask 2, with an average Jensen-Shannon distance of 0.301 (2nd place). The computational efficiency of our approach suggests potential for scalable applications across various languages and linguistic contexts
Impact of aerodynamic interactions on aeroelastic stability of wing-propeller systems
No full textThis paper presents initial findings from aeroelastic studies conducted on a wing-propeller model, aimed at evaluating the impact of aerodynamic interactions on wing flutter mechanisms and overall aeroelastic performance. The flutter onset is assessed using a frequency-domain method. Mid-fidelity tools based on the time-domain approach are then exploited to account for the complex aerodynamic interaction between the propeller and the wing. Specifically, the open-source software DUST and MBDyn are leveraged for this purpose. The investigation covers both windmilling and thrusting conditions. During the trim process, adjustments to the collective pitch of the blades are made to ensure consistency across operational points. Time histories are then analyzed to pinpoint flutter onset, and corresponding frequencies and damping ratios are identified. The results reveal a marginal destabilizing effect of aerodynamic interaction on flutter speed, approximately 5%. Notably, the thrusting condition demonstrates a greater destabilizing influence compared to the windmilling case. These comprehensive findings enhance the understanding of the aerodynamic behavior of such systems and offer valuable insights for early design predictions and the development of streamlined models for future endeavors
An analytical approach to power optimization of concentrating solar power plants with thermal storage
No full textThis paper deals with the problem of determining the optimal capacity of concentrated solar power (CSP) plants, especially in the context of hybrid solar power plants. This work presents an innovative analytical approach to optimizing the capacity of concentrated solar plants. The proposed method is based on the use of additional non-dimensional parameters, in particular, the design factor and the solar multiple factor. This paper presents a mathematical optimization model that focuses on the capacity of concentrated solar power plants where thermal storage plays a key role in the energy source. The analytical approach provides a more complete understanding of the design process for hybrid power plants. In addition, the use of additional factors and the combination of the proposed method with existing numerical methods allows for more refined optimization, which allows for the more accurate selection of the capacity for specific geographical conditions. Importantly, the proposed method significantly increases the speed of computation compared to that of traditional numerical methods. Finally, the authors present the results of the analysis of the proposed system of equations for calculating the levelized cost of electricity (LCOE) for hybrid solar power plants. The nonlinearity of the LCOE on the main calculation parameters is show
An industry 4.0 ontology-based architecture for interoperability at the field level
No full textIndustrial field devices exchange information through standardized communication interfaces and data models,
encompassing process data, communication properties, and vendor details. Despite enhancing interoperability within a specific
protocol, integrating these devices with diverse systems poses challenges due to data model fragmentation and custom
interfaces. The absence of a universal semantic model for categorizing field device process data independently of standards
necessitates engineers to repetitively devise custom exchange data models for different sensors and actuators, relying on
standards like OPC-UA. In response, this work proposes an ontology-based architecture to tackle information data model
fragmentation, aiming for seamless data interoperability across a universal interface. By focusing on two open-access field
device standards, IO-Link and CANOpen, we compare their information data models, identify existing limitations, and put
forth a semantic information model. The objective is to offer an interoperable interface for Industry 4.0 applications,
showcasing the potential of an ontology-based approach in streamlining data exchange and reducing heterogeneity among
field devices
Urban Cycling : Ein ergonomischer Fahrradkorb mit Systemverbindung
No full textDie Abschlussarbeit beschäftigt sich mit der Gestaltung eines innovativen Fahrradkorbes, um die Attraktivität und den Komfort nachhaltiger Mobilität in urbanen Umgebungen zu erhöhen. In Zusammenarbeit mit der Firma tubus carrier Systems GmbH wurde für ihre Gepäckträger mit Systemverbindung ein ergonomischer, tragbarer Fahrradkorb entwickelt, der die Anforderungen des täglichen Stadtverkehrs erfüllt. Ziel der Arbeit war es, einen Korb zu konzipieren, der leicht, wetterbeständig und sicher ist. Daher besteht der Korb aus recyceltem EPP-Material, das stoßdämpfend, leicht, robust und langlebig ist. Mit seiner ergonomischen Form und der Möglichkeit, die Tragegurte auszutauschen, bietet der Korb einen komfortablen und flexiblen Transport. Der ergonomisch gestaltete Fahrradkorb "Urban Bay" soll durch seine flexible, komfortable Nutzung den Alltag mit dem Fahrrad erleichtern und attraktiver machen
Prüfungsordnung für die Bachelorstudiengänge „Medizintechnik“, „Medizintechnik mit Praxissemester“ und „Medical Engineering (AOS)“, Studienbeginn ab Wintersemester 2024/25
No full textOrdnung zur Änderung der Ordnung zur Einstellung des Bachelorstudiengangs „Angewandte Mathematik und Informatik (AOS)”
No full textA general approach for testing independence in Hilbert spaces
No full textWe generalize the projection correlation idea for testing independence of random vectors which is known as a powerful method in multivariate analysis. A universal Hilbert space approach makes the new testing procedures useful in various cases and ensures the applicability to high or even infinite dimensional data. We prove that the new tests keep the significance level under the null hypothesis of independence exactly and can detect any alternative of dependence in the limit, in particular in settings where the dimensions of the observations is infinite or tend to infinity simultaneously with the sample size. Simulations demonstrate that the generalization does not impair the good performance of the approach and confirm our theoretical findings. Furthermore, we describe the implementation of the new approach and present a real data example for illustration