One of the most important puzzles in modern astrophysics is the nature of dark matter.

One of the effects of climate change is the phenomenon of desertification, a process that occurs in semi-arid and arid areas and causes land degradation as well as vegetation loss. Due to the lack of resources, vegetation self-organizes to sustain itself by forming large-scale spatial patterns.

Promotor: A. Achúcarro Co-promotor: A. Boyarsky

What are the global relationships between environmental conditions and abundance of distinct types of mycorrhizal fungi in soil and plant roots?

The goal of the project is the development of stream mining techniques for complex patterns such as graphs. We will try to extend the existing state-of-the-art techniques into two, orthogonal directions: on the one hand, the mining of more complex patterns in streams, such as sequential patterns and…

Promotor: A. Doelman, Co-promotores: P.J.A. van Heijster; A. Zagaris

In this thesis, the research focuses on the properties of dark matter and dark matter haloes and how they connect with the galaxies we can observe in the Universe.

This thesis is dedicated to the exploration of the primordial dark ages: unknown physics during the earliest stages of the Universe’s expansion that have not yet been directly probed by observations. Cosmic inflation is a burst of exponential expansion of space after the “Big Bang”.

It is an established fact that the Standard Model has to be extended to explain the so-called Beyond the Standard Model (BSM) phenomena: dark matter, matter-antimatter asymmetry of the Universe and neutrino flavour oscillations.

Dark matter is one of the biggest mysteries of the Universe. Its properties cannot be explained with the known laws of physics and elementary particles.

This thesis is largely an experimental study on the formation of solid-state simple and complex organic molecules in the H2O-rich and CO-rich ice phases of dense interstellar clouds and dark cores.

Promotor: J.N. Kok, Co-promotor: C.M. Soares, A.J. Knobbe

Promotor: Prof.dr. J. Schaye, Co-promotor: Marcello Cacciato

Of all the mass in our Universe, 80% is thought to consist of a hypothetical and invisible substance called dark matter (DM).

Improvements of weak gravitational lensing shape measurements are presented and some used for data analysis.

This thesis describes how complex and real-world relevant analytical solutions can be found starting from a simple Nagumo problem posed on one or two-dimensional lattices.

Mycorrhizas are symbiotic associations between soil fungi and most plant species.

We consider the propagation of electrical signals through nerve fibres.

Promotor: K. Kuijken, Co-Promotor: H. Hoekstra

Promotor: E. Gittenberger, Co-promotor: B.W. Hoeksema

In dit project gebruiken we sociale netwerkanalyse om het gedrag van gebruikers op online fora en bijbehorende marktplaatsen in de tijd te analyseren.

In this thesis, we study travelling waves in stochastic reaction-diffusion equations. We extend techniques from the deterministic theory for travelling waves to apply to the stochastic version, which allows us to compute the stochastic wave speed and shape, and draw conclusions on the stability of the…

Promotie

What happens to electrical waves that have to cross gaps in insulation material around nerves in the human body

Vast, often populated, areas in dryland ecosystems face the dangers of desertification.

My PhD project studies how the temporally sequential Hox gene expression is regulated during head-tail patterning of the frog embryo.

Promotor: G.R. de Snoo, Co-promotor: C.J.M. Muster

At the largest scales, two ingredients dictate the distribution of matter in the Universe. The first is dark matter, acting as an invisible scaffolding held together by gravitational forces.

We have studied shape with a particular focus on the zebrafish model system. The shape is an essential appearance of the phenotype of a biological specimen and it can be used to read out a current state or response or to study gene expression.

The theoretical explanation of cosmic acceleration is nowadays one of the biggest puzzles in cosmology.

In the first part of this thesis we study the geometry of folding patterns.

Op 7 oktober 2021 was Simone van der Hof te gast bij een online talkshow in het kader van de Dutch Media Week met als thema het onderzoek waaraan zij werkt met Tony van Rooij van het Trimbos Instituut en Max Birk van de TU Eindhoven: Behavioral Design in Video Games.

Promotor: Koen Kuijken Co-promotor: Henk Hoekstra

Promotor: Arjen Doelman, Co-promotor: Vivi Rottschäfer

Veruit de meeste gebruikers van netwerken van seksueel kindermisbruik, oftewel kinderpornofora, op het dark web communiceren daar niet actief, maar downloaden wel illegaal materiaal. Ze plegen daarmee strafbare feiten. Toch blijven ze vaak buiten zicht van politie en justitie. Promovendus Madeleine…

The focus of the dissertation

This thesis discusses the discovery potential of Intensity Frontier experiments.

In this work, we attempt to answer the question:

Promotor: Prof.dr. J.N. Kok, Co-promotor: A.J. Knobbe

How the global distribution of vegetation stands dominated by arbuscular and ectomycorrhizal plants relate to principle aspects of belowground carbon accumulation processes?

Promotor: A. Doelman, Co-promotor: J.D.M. Rademacher

The high velocity tail of the total velocity distribution of stars provides essential insight into fundamental properties of the Galaxy.

Promotor: Prof.dr. J.N. Kok, Co-promotor: F.J. Verbeek

The first direct detection of gravitational waves opened the possibility of mapping the Universe via this new and independent messenger.

Het moet er zijn, alleen kunnen we het niet zien: de raadselachtige donkere materie en donkere energie in het heelal. Henk Hoekstra is een van de vele kosmologen die dolgraag, willen weten waar deze substanties precies uit bestaan. Hij kreeg er een Europese onderzoekssubsidie van 1,3 miljoen euro vo…

In astronomy, the interpration of observations and measurements plays a crucial role: we rely purely and fundamentally on the information that reaches us as observers. And 80% of all matter in the universe is undetectable directly.

Promotie

The thesis is part of a bigger project, the HEPGAME (High Energy Physics Game). The main objective for HEPGAME is the utilization of AI solutions, particularly by using MCTS for simplification of HEP calculations.

Within the field of astronomy, understanding how galaxies grow and evolve from the Big Bang to the present day is a challenging and complex question.