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Dissertation
Characterisation of Cold Asphalt Mixtures with the Addition of Active Fillers
(2023)
Climate change, the limited availability of natural resources, and energy crises are putting pressure on the global societies? to employ low-energy and low-emission technologies for road pavement construction. Cold Recycled Materials (CRM) is an efficient and low-impact solution. CRM with Bituminous Emulsion (CRM-BE) is one of the most common types of CRM. CRM-BEs are created at ambient temperature by combining a high amount of Reclaimed Asphalt (RA) with Bitumen Emulsion (BE). BE used in CRM is typically composed ...
Dissertation
Capital Accumulation, Sector Productivity, and Economic Growth
(2023)
This dissertation is motivated by the research results of Benigno and Fornaro (2014). Benigno and Fornaro (2014) research, how low interest rates impact the productivity of economies.
This dissertation implements extensions of the Benigno and Fornaro (2014) model, that particularly address the capital accumulation, the production functions, and the technology accumulation. In doing so, this dissertation shows that some of the Benigno und Fornaro (2014) research results require specific assumptions, to qualitatively ...
Dissertation
Die Beschreibung professioneller Handlungskompetenz von (angehenden) Lehrkräften in schulischen Praxisphasen
(2023)
Die Dissertation untersucht die subjektive Beschreibung professioneller Handlungskompetenz von (angehenden) Lehrkräften in schulischen Praxisphasen und ist in vier Teilkapitel gegliedert.
Der theoretische Rahmen bildet den ersten Teil der Arbeit und befasst sich mit der Frage, was die professionelle Handlungskompetenz von Lehrkräften ist, wie sie erfasst werden kann und welche theoretische Einordnung vorzunehmen ist. Drei Abschnitte geben Aufschluss über das Modell der professionellen Handlungskompetenz von ...
Dissertation
Geospatial crop yield modeling for climate change risk transfer, impact assessment, and adaptation strategies
(2023)
Changing climate and weather patterns increase the pressure on food production systems worldwide, significantly impacting livelihoods and economies at various scales. Understanding and adapting/mitigating climate change are essential to cope with the adverse effects of climate change. Biophysical crop modeling offers a unique way to assess the pros and cons of different adaptation strategies because they integrate physical and biological principles to simulate the use and allocation of captured resources mechanistically. ...
Dissertation
Analysis of a Coupled Fluid-Elastic Interaction Problem
(2023-01)
In this thesis, a non-linear system of partial differential equations is studied, describing the motions of an elastic structure which is immersed into an incompressible viscous fluid. The displacement of the elastic structure is modelled by a Lamé system and the fluid velocity as well as the fluid pressure are described by the Navier-Stokes equations. The structure and the fluid are coupled via two boundary conditions at the interface which correspond to continuity of velocities and forces. As the elasticity is ...
Dissertation
Nutrition transition in Kyrgyzstan: Understanding the triple burden of malnutrition and the importance of dietary quality
(2023)
Nutrition transition, including changes in lifestyle and diet, has been taking place globally. Malnutrition is a serious public health issue responsible for the considerable portion of noncommunicable diseases (NCDs). Currently, little knowledge about nutrition transition and its relation to malnutrition exists in low and middle-income countries. Kyrgyzstan undergoes a nutrition transition with health and diet implications, especially to women. Kyrgyzstan is believed to be at the end of the ‘receding famine’ stage ...
Dissertation
Der Einfluss von Befahrung alter Rückegassen mit einem schweren Rückezug auf mechanische, strukturelle und funktionelle Eigenschaften eines mit Fichten bestockten Lössbodens in Abhängigkeit von der Fahrwerkkonfiguration
(2023)
Bei der maschinellen Holzernte mit schweren Holzerntefahrzeugen wird der befahrene Waldboden deformiert und damit potenziell in seiner forstwirtschaftlichen Produktivität eingeschränkt. Mögliche Lösungsansätze für diese unerwünschte Nebenwirkung des Technikeinsatzes sind die Beschränkung der Befahrung des Waldbodens auf permanenten Rückegassen und die Verwendung tragender Bogiebänder. Es besteht jedoch eine Forschungslücke zur Veränderung der physikalischen Eigenschaften von vorverdichtetem Boden bestehender Rückegassen ...
Dissertation
Die Gestaltung gesunder und effektiver digital vermittelter Kommunikation im Kontext von Remote Leadership – eine Betrachtung unter Berücksichtigung des Aspektes der psychologisch sicheren Kommunikation
(2023)
Einhergehend mit einer fortschreitenden Globalisierung und Digitalisierung nimmt auch die Verbreitung von Remote Leadership, auf Distanz vermittelter Führungs- und Kommunikationsprozesse, seit mehreren Jahren stetig zu; im Zuge der Covid-19-Pandemie hat sich diese Entwicklung nochmals beschleunigt. Unternehmen, die angesichts eines internationalen Wettbewerbs mit einem wachsenden Innovations- und Optimierungsdruck konfrontiert sind, müssen in der modernen Arbeitswelt, wollen sie wettbewerbsfähig und erfolgreich ...
Dissertation
Explaining and Visualizing Structural Knowledge in Bipartite Graphs
(2023)
Bipartite graphs are an important model for the representation and analysis of relationships between two different types of entities. Datasets in this form are commonly found in many fields, such as social networks, biology, and economics. Formal concept analysis is a research approach that allows for the analysis of such bipartite graphs by clustering the data into so-called concepts and ordering those in a lattice structure.
In this thesis we propose multiple approaches for the extraction and visualization of ...
Dissertation
Solar energy integration in agro-processing in the tropics: a case study of large and small-scale cassava processing
(2023)
Agro-processing is key to reducing post-harvest losses. Agro-processing is defined as a set of techno-economic activities applied to all the products originating from the agricultural farm, livestock, aqua cultural sources, and forests for their conservation, handling, and value-addi-tion to make them usable as food, feed, fibre, fuel, or industrial raw materials [12]. Processing can be sophisticated (relying on industrial plants and machinery) or simple (depending on the sun or indigenous small-scale processes). The ...