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Ates, Matthijs (author)The aim of this thesis is to simulate quantum spin chains at a finite temperature. This has been achieved by using purification to write the incoherent thermal states of the spin chain as pure states, after which the matrix product state (MPS) formalism to simulate the spin chain. The influence of temperature on the spin chain has been tested by...bachelor thesis 2022
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Glasbeek, Arnoud (author)In agricultural studies it is often important to predict the performance of genetically different plants. To make sure predictions are done well, it is necessary to make sure they are not influenced by effects of the field on which they are planted. These field effects or spatial effects are in practice often quite complicated and can be due to...bachelor thesis 2022
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Khan, Danish (author)The potato is a plant that can grow from another potato tuber. Farmers and producers have to contend with the declining quality of soil and are producing less vital potato tubers. The differences in emergence speed between batches of the same variety of potato tubers cannot be explained. This is why Project ‘Flight to Vitality’ (FtV) is...bachelor thesis 2021
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Blomaard, Bodille (author)To regulate pollution emission of $\text{NO}_2$ and greenhouse gasses like carbon dioxide and methane, satellite images of the TROPOspheric Monitoring Instrument (TROPOMI) are used to map the spread of air pollution. This instrument delivers near-daily 'snapshots' of the $\text{NO}_2$ concentration over the whole Earth. In this report, first,...bachelor thesis 2021
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te Hofste, Merel (author)The problem of quantifying the growth dynamics of plants from time-lapse images is important for determining variety-specific characteristics and subsequent breeding. The goal of this paper is to address this problem and reconstruct three-dimensional images such that growth becomes visible. To this end, data of growing plants were collected in...master thesis 2020
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Ruis, Sidi (author)The ongoing worldwide energy transition has prompted significant scientific interest in energy storage. Rechargeable lithium-ion batteries have become a standard for energy storage in mobile devices and electric vehicles for their mass-energy density. While industry standard lithium-ion cells are currently based on liquid electrolytes, solid...bachelor thesis 2020
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- Schutte, M.W. (author) bachelor thesis 2020
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Bouwmeester, J. (author)In this thesis the matrix product state(MPS) formalism is applied to simulate a device created for remote detection in atomic spin chains. Although simulation of the full device quickly becomes infeasible for direct algorithms, MPS allowed for highly accurate simulations while requiring only modest computational resources. It has been verified...bachelor thesis 2020
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Bezemer, Marissa (author)The feasibility of subsurface imaging using diurnal temperature variations to determine and/or monitor tuber growth is investigated by creating a model capable of numerically simulating data. The model and the numerical simulations are discussed, as well as the use of effective inversion to determine the volumefraction of tubers.bachelor thesis 2019
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Kruis, Maarten (author)In this paper two ways of modeling the secondary electron yields of an insula-<br/>tor under electron irradiation, are discussed and coupled. The drift-diusion-<br/>reaction model is used to investigate the secondary yields and charging eects.bachelor thesis 2017
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ter Hoeven, R.S. (author)The Kernel Polynomial Method (KPM) is a method to approximate any function as a polynomial of finite order. In this research the KPM will be used to approximate the density of states and expectation values of physical observables in a tight binding system. To be able to use the KPM a tight binding Hamiltonian is obtained by using the python...bachelor thesis 2016
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Huijzer, L. (author)As an introduction the PageRank algorithm will be discussed. Then a model will be proposed to model (deterministic) change in the structure of a network. This model focuses on change brought about by webpage owners/administrators who can affect the link structure of the network by adding or removing hyperlinks from their webpage. First a basic...bachelor thesis 2016
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Baksteen, T. (author)The topic of this thesis is the Electrical Network Frequency (ENF) Criterion as a method to determine both the time of recording and the location of an audio file when no or corrupted meta-data is available. This may be possible when the recording equipment is mains powered or when it is situated in electromagnetic field of the power grid. Then...master thesis 2015
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Slooter, R.J. (author)The goal of this research project is to study spin chains. This involves diagonalizing large matrices. These largematrices are theHamiltonian matrices of the quantumspin chains. So the eigenvalues represent energy values. Before going into the actual programming it is important to understand how the Hamiltonian works, and how the quantum spin...bachelor thesis 2015
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Markensteijn, A. (author)Four iterative methods were used to solve the schrödinger equation on a rectangular scattering region with a uniform potential, namely GMRES, restarted GMRES, BiCGStab and IDR(s). A preconditioner like a shifted-Laplacian is tried to improve the convergence behaviour of GMRES. Finally, a disorded potential is introduced in the form of a random...bachelor thesis 2014
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De Looij, H.R. (author)Google PageRank is designed to determine the importance of a webpage. To do so, one needs to compute an eigenvector of the Google matrix. We show that this vector can also be found by solving a linear system. Additionally, an adjustment to the PageRank model will be made by considering one of the parameters to be a stochastic variable. We will...bachelor thesis 2013
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De Reus, M. (author)It is well-known that charged particles feel a Lorentz force when an electromagnetic field is applied. When the field is applied not to a single particle but a piece of material this force leads to polarization. In a solid this will lead to local displacements and internal stresses, but not actual movement will occur. In this thesis we will...master thesis 2013
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Argyrouli, A. (author)The goal of this thesis is to investigate the clustering effect of droplets in the water clouds. The initial motivation came from the incapability of millimeter-wave cloud radars to always detect low-level liquid water clouds. The observed discrepancy between the value of radar reflectivity factor estimated by radar measurements and the...master thesis 2012
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Bensdorp, S. (author)In this thesis we perform a in-depth comparison study between different geometri- cal possibilities for solar cells to find an optimal design. Basic numerical experiments on the essential parts of the improve- ments in the geometry were performed separately to obtain an indication about increasing efficiency for 2D configurations. Our research...master thesis 2011
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Raghunathan, S.B. (author)In colloidal chemistry, composite (meta)materials, photonics,geophysics and remote sensing, it is often desirable to treat an inhomogeneous object, as a homogeneous with an effective permittivity. At the moment, however, there is no general analytical method which estimates this effective permittivity for an arbitrary finite inhomogeneous...master thesis 2008