This thesis explores the theoretical and observational properties of distant massive galaxies that harbour active black holes in their centres and shine brightly at radio wavelengths.

Promotor: Prof. dr. Arnold Tukker & Prof. dr. René Kemp (Maastricht University)

Promotor: Prof.dr. J.M. van Ruitenbeek, Prof.dr. R.M. Tromp

We explored the Universe using weak gravitational lensing, a phenomenon that occurs when light from distant galaxies is bent by the gravitational fields of closer cosmic objects, much like how a lens distorts light.

The objective of this study was to investigate the expression and function of GRHL2 in different breast cancer subtypes.

Promotor: Jan van der Greef; Co-promotors: Mei Wang; Eduard van Wijk

Promotor: Prof.dr. M. Ubbink

The main object of study in this thesis is an Arakelov inequalitywhich bounds the degree of an invertible subsheaf of the direct image ofthe pluricanonical relative sheaf of a semistable family of curves.

In this thesis we study bistable reaction-diffusion equations on lattice domains.

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.

We present an extensive study of methods for exactly solving stochastic constraint (optimisation) problems (SCPs) in network analysis. These problems are prevalent in science, governance and industry.

The aim of this thesis is to develop and study a robust and adaptable scaffold for supramolecular polymer self-assembly in water.

Stochastic resetting is simple enough to be approached analytically, yet modifies stochastic processes in a non-trivial way.

Promotores: Prof.dr. E.F. van Dishoeck, Prof.dr. C.P. Dullemond

We study the interplay of topology and geometry with chirality for several passive and active systems, employing both analytical and numerical methods.

This thesis involves three topics: benchmarking discrete optimization algorithms, empirical analyses of evolutionary computation, and automatic algorithm configuration.

Promotor: S.J. Edixhoven, Co-promotor: R.S. de Jong

Op 7 december 2021 verdedigde Georgina Kuipers het proefschrift 'Beschadigd vertrouwen'. Het promotieonderzoek is begeleid door prof.mr. W. den Ouden en prof.dr. M.A. van der Steen (EUR).

Binnen het brede netwerk van de Universiteit Leiden neemt het instituut deel aan onderzoek binnen de volgende profileringsgebieden:

Plant-microbe interaction resulted in different physio/chemical responses by host plant and interacting rhizobacteria.

In this thesis unconventional tools based on fluidic interfaces were developed to study the surface and interfacial chemistry of graphene, to characterize the intrinsic properties of graphene, to disentangle the effects of substrate and of the environmental factors, and to improve handling protocols…

Promotor: Promotor: W.Th.F. den Hollander, Co-promotor: V. Sidoravicius.

Galaxies in the Universe are distributed along the intricate framework of the Cosmic Web. Groups and clusters of galaxies comprise the densest regions in this network, and therefore, are excellent cosmic laboratories to study different aspects of galaxy evolution in extreme environments.

Promotor: Prof.dr. J. den Hertog

Optical projection tomography (OPT) is a tomographic 3D imaging technique used for specimens in the millimetre scale.

Promotor: S.M. Verduyn Lunel, Co-promotor: S.C. Hille

This thesis focuses on important life history traits and their trade-offs using two hexapod models. Particularly, the trade-off between immune defense and embryonic developmental speed is a central theme of this study.

The applications of studying the early development of insects range from agriculture to material science.

Complex Organic Molecules (COMs) have been detected in objects across different stages of stellar evolution.

Promotor: A. Kros

This thesis is comprised of three chapters covering the theme of studying semistable varieties by looking at their dual combinatorial objects.

In this thesis we explore machine and deep learning approaches that address keychallenges in high dimensional problem areas and also in improving accuracy in wellknown problems. In high dimensional contexts, we have focused on computational fluid dynamics (CFD) simulations.

Promotor: J.W. van Holten

This dissertation consists of two parts, each of which considers a different research area related to random interval maps. In the first part we are interested in random interval maps that are critically intermittent.

The European Council and the European Commission have a similar role in agenda setting. Both place issues on the EU agenda. However, these institutions have distinct designs. They have different political attributes (the European Council has considerably more political authority) and information-processing…

Promotor: Prof.dr. P. Stevenhagen

Materials with strongly correlated electrons show some of the most mysterious and exotic phases of quantum matter, such as unconventional superconductivity, quantum criticality and strange metal phase.

The research presented in this thesis explores the chemotherapeutic potential of metal-based compounds as chemotherapy agents, with an initial focus on the synthesis and DNA interaction studies of platinum and palladium compounds utilizing the [Pt(bapbpy)]2+ scaffold. The study identifies intercalation…

What physics controls the properties of quantum matter, such as how electrons flow inside high-temperature superconductors? This question has captivated the physics community and industry for decades, in part due to the great technological potential such materials have, but also because they have resisted…

Promotores: T.H. Oosterkamp, N. de Jonge

The sequence-dependence of biomolecular interactions involving nucleic acids and proteins is essential for numerous processes inside the cell. Insights into the underlying molecular mechanisms have been obtained using various biochemical and biophysical methods on two different levels — bulk and sin…

In this thesis, I focused on studying the above- and belowground interactions of J. vulgaris from a plant-soil feedback (hereafter, PSF) perspective. I investigated the temporal variation of negative PSF and examined the effects of root-associated bacteria on plant performance and aboveground herbiv…

This thesis studies the geometry of representation varieties and character stacks. These are spaces parametrizing the representations of a finitely generated group, typically the fundamental group of a compact manifold, into an algebraic group G.

Sterrenkundigen zijn cijfermatig sterk en dus gewild voor posities binnen en buiten het onderzoek in verschillende sectoren. Je kunt aan de slag in de wetenschap, het bedrijfsleven, het onderwijs of bij de overheid.

This study’s main aim is to test whether children’s learning behaviour explains why they do not benefit from a literate environment.

De Faculteit der Geesteswetenschappen kent 8 instituten:

Promotor: C. W. J. Beenakker, Co-promotor: J. K. Asboth

Het Research Lab for the Study of Heritage Languages of the Netherlands (HERLING) is een platform voor onderzoek naar erfgoedtalen die in Nederland worden gesproken, met een focus op Turks, Bahasa Indonesia, Spaans, Papiamento, Berbers, Arabisch en Duits. HERLING wil een brug slaan tussen wetenschappelijk…

The objective of this study is to better understand the distribution of microplastics in the environment. More specifically, we will quantify the abundance and distribution of microplastics on beaches.