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Investigating hazardous chemicals in plastics in a linear and circular economy
(2024)Doctoral Thesis -
BUI LDINGS B LOCKS TOWARDS FUL LY INT EGRAT ED HIGH- FREQUENCY POWER E L ECTRONIC DEVICE S
(2024)Limiting climate change is closely linked to the energy transition from fossil fuels to sustainable energy sources and the intelligent electrification of energy supply and consumption. This process is accompanied by the implementation of wide bandgap semiconductors such as SiC and the adjustment of the whole device packaging including all components and material systems. In this spirit, this work focuses on some crucial building blocks ...Doctoral Thesis -
THE BIOGEOGRAPHY OF KEY FUNCTIONAL TRAITS AND COMMUNITY STRUCTURES ACROSS GLOBAL FORESTS
(2024)Doctoral Thesis -
Taming Reactive Nitrogen Intermediates for Amination and Deaminative Coupling Reactions
(2024)Doctoral Thesis -
Taming Reactive Nitrogen Intermediates for Amination and Deaminative Coupling Reactions
(2024)Doctoral Thesis -
Taming Reactive Nitrogen Intermediates for Amination and Deaminative Coupling Reactions
(2023)Doctoral Thesis -
Non-Convex Optimization in Networks and High-Dimensional Covariance Estimation
(2024)In this thesis, we consider two sub-fields of Mathematics, on the one hand Mathematics of Data Science, on the other hand High-Dimensional Probability. The first part of this work is dedicated to problems in non-convex optimization arising in inverse problems on networks and synchronization in complex networks. The second part is dedicated to robust estimation of covariance matrices of high-dimensional vectors, mainly in the context of ...Doctoral Thesis -
Die direkte fahrzeugseitige Messung der akustischen Schienenrauheit
(2024)Auf dem Weg zur umweltfreundlichen Mobilität wächst die Bedeutung des Schienenverkehrs. In Zukunft wird in der Schweiz ein weiterer Anstieg des Fahrgast- und Güteraufkommens im Schienenverkehr erwartet. Die steigende Nachfrage ist mit einer höheren Anzahl an Fahrten verbunden und es ist mit einer stärkeren Belastung der Schieneninfrastruktur zu rechnen. Dies stellt sowohl die Instandhaltung als auch den Lärmschutz vor neue Herausforderungen. ...Doctoral Thesis -
Physics-informed Probabilistic Artificial Intelligence for Enhanced Stability Predictions in Milling
(2024)With the widespread use of milling operations in the manufacturing industry, there has been a consistent desire to operate machine tools at their highest material removal rate capacity. Such an increase in productivity brings economic and environmental benefits by reducing the production time per item, subsequently leading to reductions in production costs, energy consumption, and related expenses. Despite this enduring aspiration, the ...Doctoral Thesis -
Carbon Isotopes and a Laser: Towards Simultaneous Measurements
(2024)The technique of laser ablation accelerator mass spectroscopy (LA-AMS) has been developed and improved over the past decade. It promises faster and cheaper high-resolution ¹⁴C records of various carbonate archives, but these benefits come at the cost of measurement precision. Here, a routine analysis protocol is proposed, which can reduce uncertainties by about 55%. It achieves this by measuring two parallel tracks, applying a Savitzky-Golay ...Doctoral Thesis