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Broeren, F.G.J. (author)
Most materials around us have properties that are determined at extremely small scales. Often the atoms and molecules that make up these materials determine how they behave under load. While this already leads to a great variety of material properties, a lot more is possible. <br/>Mechanical metamaterials use structure to extend the available...
doctoral thesis 2022
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Kool, J.J. (author)
In the last century, approximately 100,000 people lost their lives during a flood event and over 1.4 billion people were affected. As the population and economic activities grow in flood-prone areas and the frequencies and intensities of flood events increase due to climate change, damage due to flooding is expected to increase. To limit and...
doctoral thesis 2022
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Lee, J. (author)
Current aircraft maintenance ensures safe and reliable flight operations based on inspections repeated at fixed time intervals. The time interval between inspections is often much shorter than the average life of aircraft components, in an effort to timely detect potential failures. While this approach successfully prevents most potential...
doctoral thesis 2022
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Paquelet Wuetz, B. (author)
Spin qubits in silicon have emerged as a promising candidate for a scalable quantum computer due to their small footprint, long coherence times, and their compatibility with advanced semiconductor manufacturing. However, all known spin qubit material hosts come with specific challenges, that limit the performance of quantum information...
doctoral thesis 2022
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Zhang, P. (author)
Short pitch corrugation is a (quasi-) periodic rail surface defect with shiny crests and dark valleys. It primarily occurs on tangent tracks or gentle curves with a typical wavelength in the range of 20-80 mm. Short pitch corrugation excites high-frequency wheel-rail dynamic contact forces and generates a high level of noise, which is a nuisance...
doctoral thesis 2022
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Pol, J.C. (author)
Structural flood protection systems such as levees are an important component in flood risk reduction strategies. Levees can fail through various failure mechanisms; this thesis focuses on the mechanism Backward Erosion Piping (BEP) which occurs when a sandy levee foundation is eroded by groundwater flow. To assess whether a levee's reliability...
doctoral thesis 2022
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Singirankabo, U.A. (author)
This PhD study aims to assess the relations between land tenure security, farmland use and agricultural productivity. Using a locally-defined research approach, the study explores those relations from a review of the literature to a case study in Rwanda. Therefore, the case study includes four research sites: Gatwe, Nyabubare, Rusebeya and...
doctoral thesis 2022
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Nazeer, A. (author)
In the high elevation Hindukush Karakoram Himalaya (HKH) mountain region, the complex weather system and sparse measurements make the elevation-distributed precipitation among the most significant unknowns and limit the realistic and comprehensive assessment of precipitation. In addition, due to local orographic effects, precipitation can vary...
doctoral thesis 2022
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Tan, J. (author)
Ocean wave energy has a huge potential to make a contribution to global energy transition. However, the high Levelized Cost of Energy (LCOE) is currently a big hurdle to the development of wave energy converters (WECs). This thesis is motivated to improve the techno-economic competitiveness of WECs. It focuses on the effects of systematic sizing...
doctoral thesis 2022
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Neustroev, G. (author)
Sequential decision-making under uncertainty is an important branch of artificial intelligence research with a plethora of real-life applications. In this thesis, we generalize two fundamental properties of the decision-making process. First, we show that the theory on planning methods for finite spaces can be extended to infinite but countable...
doctoral thesis 2022
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Tschirpke, S. (author)
Saccharomyces cerevisiae proliferates through budding, where a daughter cell grows by budding off one side of the mother. The first step towards budding is polarity establishment: here Cdc42 accumulates in one spot on the membrane, marking the site of bud-emergence. Cdc42 accumulation arises through at least two interconnected regulatory...
doctoral thesis 2022
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Melman, T. (author)
In recent years, cars are increasingly computerized, where the handling of the vehicle can be changed to accommodate individual needs. One specific feature in current vehicles that can alter the vehicle’s dynamic behavior are driving modes: predetermined vehicle settings that drivers can select by the press of a button. Unfortunately, user...
doctoral thesis 2022
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Estevez Alonso, A. (author)
Microbes are the gears that sustain all forms of life in planet Earth and are expected to become key players in the transition towards a more sustainable society. In this thesis, microbes from sewage sludge are used for the production of polyhydroxyalkanoates, biodegradable polymers that have the potential to replace<br/>many of the petroleum...
doctoral thesis 2022
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Pei, R. (author)
Fossils derived plastics offer a wide range of services in applications, frompackaging to building and construction, to electronics and water distribution networks. The use of fossils to produce plastics releases the stored CO2 and contributes to climate change. Due to durability and resistance to degradation, discarded plastics accumulate in...
doctoral thesis 2022
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Zhang, S. (author)
Alkali-activated Materials (AAMs), including those classified as geopolymer, are obtained through the reaction between a solid precursor and an alkaline solution. Compared with ordinary Portland cement (OPC) binders, these materials maintain comparable mechanical properties but have the advantage of reducing greenhouse gas emissions and...
doctoral thesis 2022
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Owusu, A.G. (author)
For most of the 20th century, the design and operation of dams prioritized traditional economic considerations such as hydropower generation, flood risk reduction and provision of water for irrigation and domestic use. This resulted in altered river flow regimes, degraded riverine ecosystems and ecosystem services, and biodiversity loss....
doctoral thesis 2022
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van Manen, T. (author)
An important goal of bone tissue engineering is the development of synthetic bio-scaffolds that would eliminate the need for bone transplantation, also known as bone grafting. Bone grafting is associated with some serious limitations such, as morbidity at the donor-site and shortage of donor tissue. Therefore, scientist have been trying to...
doctoral thesis 2022
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sharifian, rezvan (author)
To mitigate climate change, carbon capture is necessary. In addition to the energy transition towards renewable sources and green house gasses emission reduction, CO2 capture from flue gas and its sinks, including air and the ocean, must be promoted. By 2030, in less than 8 years, the global carbon capture capacity must increase 100 × (from the...
doctoral thesis 2022
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Fang, G. (author)
Soft robots that are built from materials with mechanical properties similar to those of living tissues can achieve tasks like never before in comparison to conventional rigid robots. Powered by the compliance of soft materials and novel structure designs, complex motion (e.g., bending, twisting, and extension) can be accomplished in robotic...
doctoral thesis 2022
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Kim, S. (author)
The operation of membrane bioreactors (MBRs) at high mixed liquor suspended solids (M1SS) concentrations (higher than 15 g 1-1) may enhance the loading rate treatment capacity, while minimizing even further the MBR system's footprint. However, oxygen transfer in wastewater treatment is significantly influenced by the M1SS concentrations....
doctoral thesis 2022
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