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Dissertation
Evaluation of efficacy of homeopathic and antibiotic treatment in scientific research and practice with focus on bovine mastitis
(2024)
The use of homeopathy and antibiotics in treatment have the same goal: to cure a diseased individual. The first choice should be the most effective treatment and only a repeated treatment success will justify its use. If the chosen treatment is not effective, unnecessary suffering of diseased animals, spreading of disease or chronification of mastitis will be the result. Additionally, in case of antibiotic use, an ineffective use will select and promote the prevalence of multi-resistant bacteria in the environment, ...
Dissertation
Fostering sustainable consumption through communication: Consumers’ appreciation of biodiversity-friendly pasture-based cattle husbandry
(2024-01)
Considering dramatic environmental changes, there is an evident necessity of a transition to more sustainable animal production that caters to societal demand for ethical production and consumption. The slow but steady shift in consumer demand for animal-friendly, environmentally, and socially re-sponsible animal products has been well documented over the past years. The overarching goal of this dissertation is to provide insights regarding consumer perceptions, acceptance, preferences and com-munication of ...
Dissertation
Dynamics of Norms in Decision-Making
(2024-01)
So far, there is a lack of understanding how norms change. The aim of the present dissertation was twofold: (1) addressing differences between change processes of different types of norms and (2) focusing more particularly on how norms are internalized. To study norm dynamics, a multi-method approach was chosen, combining theory, social simulation, and experimental research. In the theoretical contribution, a psychologically grounded conceptual model of norm change and decision-making was presented. Based on a refined ...
Dissertation
A Unifying Theory for Runge-Kutta-like Time Integrators: Convergence and Stability
(2024)
The work deals with two major topics concerning the numerical analysis of Runge-Kutta-like (RK-like) methods, namely their stability and order of convergence. RK-like methods differ from additive RK methods in that their coefficients are allowed to depend on the solution and the step size. As a result of this, we also refer to them as non-standard additive RK (NSARK) methods. We motivate and introduce modified Patankar (MP) schemes as a subclass of NSARK methods and emphasize their importance. The first major part ...
Dissertation
Immobilization of Neodymium Complexes on Semiconductor Surfaces and Processing of GaAs-based Photonic Crystals
(2024)
Lanthanide ion luminescence exhibits characteristic narrow emission bands ranging from VIS to NIR along with relatively long emission lifetimes which makes them attractive for applications in lighting, sensing, and display technologies. The focus of this dissertation lies on the optical characterization of newly synthesized neodymium complexes bearing phosphonate ester ligands and the fabrication of photonic crystal (PhC) cavities. Micro-photoluminescence (PL) spectroscopy is used to investigate the NIR emission bands ...
Dissertation
New Approaches for the Quantification of Metabolic and Economic Trade-Offs Related to the Health and Longevity of Individual Dairy Cows
(2024)
Background: In dairy cows, negative associations between the genetic merit for milk yield and fitness traits as well as a lack of success in lowering the prevalence of production diseases have been noticed over the past 30 years across different production methods, herd sizes and countries. On the other hand, individual farms and individual cows within a farm succeed in simultaneously achieving high performance, low prevalence and high profitability, while others cannot cope with these challenges. Differences in milk ...
Dissertation
Drivers for Fostering Agroforestry Systems in Temperate and Mediterranean Climates: Past, Present, and Future
(2024)
Traditional multifunctional agroforestry landscapes provide not only food but also support biodiversity and provide a multitude of ecosystem services. However, such landscapes have been frequently lost in the last decades. Given the multiple global challenges that have emerged from an industrial model of agriculture, agroforestry as a concept based on multifunctionality is increasingly regarded as key for sustainable food production systems of the future. To guide future land management and policies, past land-use ...
Dissertation
Optimierung des Risikomanagements als Beitrag zur Steigerung des Projekterfolgs bei Produktentwicklungsprojekten am Beispiel der Automobilindustrie
(2024)
Die zunehmende Projektifizierung der letzten Jahrzehnte hat dazu geführt, dass der Beitrag von Projekten zur Erreichung der Unternehmensziele und damit zur unternehmerischen Wert-schöpfung in gleichem Maße gestiegen ist. Gleichzeitig sind Projekte aufgrund ihres einzigar-tigen Charakters mit Risiken und Unsicherheiten behaftet, deren Auftreten im Kontext der Produktentwicklung in der Automobilindustrie durch den Produktivitätsdruck sowie die stetig steigende Komplexität und Dynamik noch verstärkt wird. Die negativen ...
Dissertation
In the Face of Adversity – Conceptual and Empirical Studies on Team and Organizational Resilience
(2024)
In this cumulative dissertation, the resilience of organizational actors is explored through four independent essays. The focus is on investigating why certain organizations and teams are better equipped to handle adversities than others. At the outset of the project, a comprehensive literature review on current research in the field of organizational resilience was conducted. This review enabled the authors to identify the so-called "Building Blocks" of organizational resilience, which provide essential theoretical ...
Dissertation
A critical assessment of opportunities and challenges from Blockchain adoption in supply chain management
(2024)
This dissertation explores the role of blockchain technology within the domain of supply chain management. The research navigates the promising and rapidly evolving landscape of blockchain technology, marked by ongoing challenges and supply chain developments. The study comprises four distinct yet interlinked examinations, each focusing on specific aspects of blockchain application in supply chain management, encompassing traceability, transaction costs, digital freight information, and the inherent tensions in ...