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Florea, Radu (author)
In this MSc. thesis, state estimation for a nanosatellite-class reaction wheel has been investigated. Two LPV observers, using different sensor information, have been synthesized. The performance of the designed observers has been evaluated using a detailed simulation of the reaction wheel (including disturbances that occur during the reaction...
master thesis 2018
document
Kralli, Vaso (author)
Nourishments are considered to be a popular soft measure against coastal erosion. In the Netherlands, the concept of a localized mega nourishment has been introduced as an innovative approach, aiming to counteract the anticipated enhanced coastal erosion. The positive results of the Sand Engine implementation lead the way for applying the mega...
master thesis 2018
document
van Ommen, Trystan (author)
Fixed support structures for offshore wind turbines are commonly used for shallow water (till 45 meters). In many countries shallow-waters are rare. Floating support structures may be the solution for these areas. Many concepts have been developed but three concepts have been analyzed (spar, semi-submergible and the tension leg platform (TLP))...
master thesis 2018
document
Sanchez Tobon, Diego (author)
Gas injection processes suffer from poor volumetric sweep efficiency due to phenomena such as viscous fingering caused by density contrast between the injected gas and the displaced fluid, channeling due to heterogeneities in the reservoir and gravity override due to the inherent lower density of gas. One possible way to overcome these negative...
master thesis 2018
document
Huang, X. (author)
The technique called "flameless combustion", also denoted as "MILD" combustion, was developed to reduce the nitrogen oxides (NOx) emission in the combustion process. The term "flameless" refers to the low visibility of the flame. The technique is particularly of interest when hot exhaust gas is used to preheat inlet air to high temperature. The...
doctoral thesis 2018
document
Liu, Xiaoyezi (author)
The Pd-based metal membranes have been focused on many studies, because they are the most promising candidates for hydrogen separation. If Pd-based membranes are designed in nanoscale, then the introduced high volume fraction of grain boundaries can act as fast diffusion paths for hydrogen atoms that leading to an increase of hydrogen separation...
master thesis 2018
document
Kersbergen, Kieran (author)
With most of the current research in quadrotor Loss-Of-Control (LOC) being focussed on specific failure cases e.g. sensor faults and Single-Rotor Failure (SRF), the growth that is expected in the drone industry will not be able to be sustained, in regards to the safety of individuals in urban areas. Without an assurance of reliability regarding...
master thesis 2018
document
Sathyadevan, Sruthi (author)
Calibration of groundwater models can be done manually by comparing the measured and computed groundwater heads or automatically using algorithms which do the work for you. Modules for this purpose are included in or linked externally to traditional groundwater modelling software and used. One such module PEST (Parameter ESTimation) uses the...
master thesis 2018
document
Ergin, Mert (author)
The thesis project is aimed at designing an unobtrusive method to find the obstruction location and severity for patients who are not diagnosed with Obstructive sleep apnea, during their non-sedated sleep using simple recording devices within uncontrolled environment. Similar to speech generation, which is enabled by opening and closing of the...
master thesis 2018
document
Hoogerwerf, Erwin (author)
In recent years, the offshore wind industry has grown significantly. The wind turbines are constructed in wind farms, and are serviced with relatively small crew transfer vessels. These vessels transport repair crews from the mainland to the farms and back within a day. One of the big challenges is that these transits can cause motion sickness....
master thesis 2018
document
Ortega-Córdova, Lessie (author)
3D city models are now common planning and analysis tools. Urban vegetation as a feature in these models, however, is neglected overshadowed by the focus on buildings, so its inclusion in 3D city models is often symbolic. On the other hand, urban vegetation improves the comfort and social well being of a city’s inhabitants and is a resource for...
master thesis 2018
document
Ayivor, Patrick (author)
The search for new sources of ancillary services and the projected demand for hydrogen as a medium of energy storage has aroused considerable interest in the use of large scale electrolysers for power system ancillary services. As the number of large scale electrolysers is projected to grow, it is important that the dynamics of these plants are...
master thesis 2018
document
Koopman, Daan (author)
This thesis adds to quantitative literature on terrorism by examining the relationship between various annual country statistics and the number of terrorist attacks. In addition, it assesses the potential of forecasting terrorism. Combining an extensive review of literature from social science, with data analysis of the Global Terrorism Database...
master thesis 2018
document
Angelova, Lilia (author)
The continuously increasing population within cities imposes the future challenges related to planning and managing the sustainable environment, where people’s health and wellbeing is prioritized. Currently more than half of the world’s population live in cities which results in the rise of the human footprint, affecting the local climate....
master thesis 2018
document
Qian, Z. (author), Miedema, H. (author), de Smet, L.C.P.M. (author), Sudhölter, Ernst J. R. (author)
A model is presented for the Na<sup>+</sup> and K<sup>+</sup> levels in the irrigation water of greenhouses, specifically those for the cultivation of tomato. The model, essentially based on mass balances, not only describes the accumulation of Na<sup>+</sup> but includes a membrane unit for the selective removal of Na<sup>+</sup> as well. As...
journal article 2018
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van Goeverden, C.D. (author), Milakis, D. (author), Janic, M. (author), Konings, J.W. (author)
Introduction: Hyperloop (HL) is presented as an efficient alternative of HSR (High Speed Rail) and APT (Air Passenger Transport) systems for long-distance passenger transport. This paper explores the performances of HL and compares these performances to HSR and APT. Methods: The following performances of the HL system are analytically modeled...
journal article 2018
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Schilder, Simon (author), Harteveld, Rens (author), van Vliet, Marc (author), Odijk, Maik (author)
Tourism is one of the main sources of income of Jamaica. . However, at the moment the beaches are retreating. An example is the erosion of Hellshire Beach, showing a retreat of ten meters in only seven years. To preserve the beaches effectively, a new concept is requested. The main requirements of the system are wave attenuation and the marine...
student report 2018
document
Garcia Goma, Elias (author)
Accurate Annual Energy Yield (AEY) predictions can mean important savings due to optimization of energy generation for both particular and utility scale PV systems. <br/>However, currently available commercial models fall short to faithfully reproduce complex designs, specially involving bifacial modules, where albedo gains are relevant. <br/...
master thesis 2018
document
de Jong, Marnix (author)
At the United Nations Climate Change Conference held in Paris in 2015, ambitious goals for the worldwide CO2 emissions were set. To achieve these goals, a huge reduction in CO2 emissions must be realized. For the energy market, the current aim is to use renewable electricity instead of fossil fuels. However, there are multiple sectors where...
master thesis 2018
document
Bader, Daan (author), de Wit, Edward (author), Kras, Etienne (author), Lambregts, Stef (author), Woudenberg, Pieter (author), Harrewijn, Thomas (author)
The Clarence River catchment is located in the state of New South Wales (NSW), on the east coast of Australia. The lower Clarence Valley is an area covering approximately 1000 square kilometers and is located on the downstream part of the Clarence River. Due to heavy rainfall, the Clarence River discharge can increase from an average 160 m3/s to...
student report 2018
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