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Fixed point and Lipschitz extension theorems for barycentric metric spaces
(2019)The subject of this doctoral thesis is the class of barycentric metric spaces, which encompasses both Banach spaces and complete CAT(0) spaces. Encouraged by known results as well as open questions in the context of CAT(0) spaces, we study similar objectives in the framework of barycentric metric spaces. For example, we show that certain fixed point properties, which are given in CAT(0) spaces, do not hold for some barycentric metric ...Doctoral Thesis -
Smooth Poly-Hypar Surface Structures
(2019)This dissertation introduces smooth poly-hypar surfaces, a new category of freeform surfaces, which integrates architectural forms with structural efficiency and ease of construction. As a combination of hyperbolic paraboloids (hypars), a smooth poly-hypar surface is ruled locally, while globally appearing to be continuous freeform. It achieves structural stiffness through the double curved shape, ensures bending-free behavior by smoothly ...Doctoral Thesis -
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Species Interactions - From Phenotypes to Ecosystems
(2019)Interactions between species can structure populations and communities, affect the flow of energy and matter within and across ecosystem boundaries, and shape the biotic and abiotic environment. Thereby, species interactions can also feed back on the participating species themselves, and on other members of the community. Complex interaction networks can arise that may influence the stability of ecosystems and potentially make them resilient ...Doctoral Thesis -
Multicomponent Catalytic Systems for Syngas Conversion into Higher Alcohols
(2019)Doctoral Thesis -
Three essays on prosociality in strategic decisions
(2019)Strategic decisions require commitment of substantial resources towards a goal, and often involve tradeoffs. Analysis of tradeoffs is fundamental to the fields of strategy, economics and neuroscience where it has been noted that strategic decisions involve competing notions of gain. Individuals take account of both economic profit (e.g. monetary gain) and material payoffs to other individuals or to societal wellbeing more generally. ...Doctoral Thesis -
Solid-State NMR Studies of Large Protein Assemblies
(2019)Amongst other applications, solid-state nuclear magnetic resonance (NMR) spectroscopy can provide atomic-resolution data for the determination of protein structures and dynamics. This is true in particular for protein assemblies that cannot be crystallised or are too large for solution-state NMR. While understanding the dynamics of a protein is of great importance for a full appreciation of its molecular machinery, this thesis has a focus ...Doctoral Thesis -
Processing and mathematical modeling of heat & mass transfer across layered food structures
(2019)Food process engineeringDoctoral Thesis