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Meijer, Angeline (author)
This report describes the study on the optimization of the magnetic field generated by a low-field magnetic resonance imaging modality. In the optimization the Genetic Algorithm and a quasi-Newton Algorithm are used.
bachelor thesis 2019
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Versluis, Nina (author)
This thesis concerns the cap set problem in affine geometry. The problem is illustrated by the card game SET and its geometrical interpretation in ternary affine space. The maximal cardinality of a cap is known for the dimension one to six. For the four lowest dimensions, a maximal cap is constructed and the optimality of its size proven. From...
bachelor thesis 2017
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Ha, Deon (author)
With the growing wealth and economy of a country, there are an increasing amount of small and big businesses. Every company has its own marketing strategy that it uses in order to lure customers away from their competition and increase their sales. Choosing the perfect time to advertise or discount several products is of essence for a company to...
bachelor thesis 2019
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Huijsman, Robbert (author)
Interest in phylogenetic trees for histories of species and DNA has spawned many problems, one of which is TreeContainment; a problem that asks whether a tree is contained within a network. The TreeContainment problem is proven to be NP-hard for general trees and networks, however it is solvable in polynomial time for networks that meet the tree...
bachelor thesis 2019
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Kortleven, M. (author)
In this research computational fluid dynamics (CFD) is used to model a vertical axis wind turbine. Well known turbulence models | i.e. the k-epsilon and k-omega SST model | are used and compared in their performance against each other and a set of experimental data. The formal research question is "What models are available for the simulation of...
bachelor thesis 2016
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Buist, Jan Willem (author)
In open-pit mining on a bench level, the dig-limit optimization problem is deciding whether to classify a Selective Mining Unit(SMU) as waste or whether to classify it as ore. SMU’s with high ore grades are profitable for the mining operation, but due to equipment size a whole frame of SMU’s has to be classified as either ore or waste. In this...
bachelor thesis 2018
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Verzijlbergen, Esmay (author)
This thesis provides you with basic information on graph theory as well as phylogenetic networks, it studies the relationship between undirected (unrooted) and directed (rooted) phylogenetic networks, based on the manuscript 'Rooting for phylogenetic networks' . Undirected phylogenetic networks can be oriented to become a directed network. In...
bachelor thesis 2019
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van Boven, M.M.A. (author)
Currently the production process of acoustic guitar factories does not result in instruments with equal dynamical behaviour, due to the varying material properties of wood from tree to tree. Experienced individual guitar builders are able to handle those material variations, but this is a labour intensive process because there is no structured...
master thesis 2017
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van Erven, Jeroen (author)
Ice skating is (still) very popular in the Netherlands, and it is gaining popularity across the globe. Temporary ice rinks on squares and in parks is an increasing solution in order to attract visitors in the winter and holiday season. Ice-World International, the world leader in temporary ice rinks since 1992, has experienced a significant...
master thesis 2019
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Ghosh, D. (author)
Multi model adaptive control is an emerging field that has proven to be successful in mitigating limitations of classical adaptive control by providing more quicker and faster adaptation. In this method instead of one single parameter varying controller, multiple fixed parameter controllers pertaining to different operation regimes are utilized....
master thesis 2015
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Khajehzadeh, Arash (author)
This project aims to investigate propeller wing interaction of an over the wing (OTW) based distributed propulsion (DP) system with the addition of a secondary wing. This research explored the opportunities that OTW configuration provides to DP concept, such as improving the lifting performance of system by inducing the flow over the upper...
master thesis 2018
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An, Xin (author)
MR-based Electrical Properties Tomography (EPT) is a medical imaging modality to reconstruct the electrical conductivity and permittivity inside the human body based on the magnetic field data obtained from an MRI system. Currently, 2D CSI-EPT implementation is able to generate reliable reconstructions under special assumption of electromagnetic...
master thesis 2019
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de Groot, Sjoerd (author)
The goal of this thesis is to present a framework which can be used to optimize the observer and controller performance by placement of sensors and actuators on a continuous domain. The framework provides choices of model structure, cost functions and optimization methods to perform the placement. Systems which would be suitable for the use of...
master thesis 2018
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Fransen, Edward (author)
This thesis concerns research into the parametric modelling and optimization of steel-concrete bridge typologies typically found in the Netherlands, in order to further the automation of preliminary bridge designs. The research question posed is: "How can a parametric bridge design model be composed to fit into the <br/>overall road design...
master thesis 2018
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Bruijns, Lianne (author)
The goal of this thesis is to provide a method to obtain a User Equilibrium (UE) in a synchromodal transportation network in which we transport containers for multiple customers. <br/>We use the Space Time Network (STN), in which the travel time of modalities is fixed and independent of the occupancy of the network.<br/>We define the User...
master thesis 2018
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Fischer-Gundlach, Moritz (author)
Lyapunov's 2nd method can be formulated as a convex optimization problem by means of Sum-of-Squares (SOS) optimization. This gives a powerful tool for robust stability analysis of nonlinear systems. The use of SOS optimization is limited to small dynamical systems, because of the demanding numerical complexity underlying SOS optimization. For...
master thesis 2017
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Blom, Martijn (author)
In order to reduce the climate impact induced by the aircraft industry, the variability between cost optimized and climate optimized flight trajectories was evaluated. This was done to establish how the climate impact reduction affects the operating costs and vice versa. To evaluate the climate impact of air traffic, a climate-chemistry model...
master thesis 2018
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Krijgsman, Wiegert (author)
In the noiseless case, the identification of a grey-box model can be posed as a feasibility problem, i.e. determining if existent - and if so - finding a parameter vector such that the parametric model equals the actual model (or its associated input-output data). Being that in this thesis we are interested in continuous-time grey-box...
master thesis 2018
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Demetriou, Kyriakos (author)
The area surveillance problem is the problem of surveying a known or an unknown area with the main purpose of detecting objects. This thesis will tackle the problem of how to employ a group of mobile-sensors for surveying an unobstructed area in an optimal manner. The mobile-sensors should make use of their onboard computers and they should...
master thesis 2019
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van Loo, Rick (author)
Striving to improve structural efficiency the aerospace industry shows increasing interest in variable-stiffness composite laminates. Advanced fiber placement is a hybrid manufacturing technique that offers the flexibility of both filament winding and automated tape laying. With the development of this novel system curved tows can be placed and...
master thesis 2017
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