Optimization tasks in practice have multifaceted challenges as they are often black box, subject to multiple equality and inequality constraints and expensive to evaluate.

Self-assembly is an abundant process in nature and is vital to many processes in living organisms.

The radio sky harbours both galactic and extragalactic sources of arcminute- to degree-scale emission of various physical origins. To discover extragalactic diffuse emission in the Cosmic Web beyond galaxy clusters, one must image low–surface brightness structures amidst a sea of brighter compact fore-…

Lysosomal acid glucosylceramidase (GBA1) is a lysosomal enzyme that degrades glucolipids with its main substrate being glucosylceramide (GlcCer). Defects in the GBA1 gene lead to glycosphingolipidosis Gaucher disease (GD), in which the hydrolysis of GlcCer is impaired and therefore, it accumulates in…

This article 'Shaping the European External Action Service and its post-Lisbon crisis management structures: an assessment of the EU High Representatives’ political leadership' assesses the role, influence and core aspects of the EU High Representatives’ (HR/VPs) “political leadership” in the context…

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

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

For centuries astronomers studied the Universe by collecting light. Nowadays, we are living in times of great technological advancements, which allow us to explore our Universe in a new way - though gravitational wave radiation.

All crested and marbled newts (the genus Triturus) suffer from an unusual genetic abnormality, called a balanced lethal system, that kills exactly half of their offspring. How can a trait so disadvantageous have survived millions of years of natural selection?

Promotor: Prof.dr. B.R. Katzy, Prof.dr. J. de Vries

I have studied the hot, diffuse gas around and between galaxies. Specifically, I have used the EAGLE numerical simulations of galaxy formation to predict the properties of this gas, and I have used those properties to predict specific observables: soft X-ray absorption and emission lines.

Why do black holes emit thermal radiation? And how does a closed quantum system thermalize?

The main research question of this thesis was: Can nitrogen cycling on dairy farms on peat soil in the Dutch Green Heart area be improved by adapting management to the nitrogen supply from soil and by using other grassland species and crops without affecting milk production?

In this thesis we will explore the use of fuzzy systems theory for applications in bioinformatics.

Promotor: E. Bouwman, Co-Promotor: S. Bonnet

Promotor: Prof.dr. P.G.L Klinkhamer, Co-promotor: K. Vrieling

Producing green energy has become the main goal in our society in the search of reducing or eliminating the carbon emission from fossil fuels.

When observing star-forming galaxies, we are not only seeing stellar light, but we also see how this interacts with galactic gas and dust. This thesis contains studies of the stellar, nebular and dust properties of low mass star-forming galaxies.

Real-life processes are characterized by dynamics involving time. Examples are walking, sleeping, disease progress in medical treatment, and events in a workflow.

The field of exoplanet research is rapidly advancing through the development of new technology, observing techniques, and post-processing methods.

Promotor: Prof.dr. L.J. Slikkerveer

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

Electron microscopy has become an extremely important techniquein a wide variety of elds.

A dense region of a gaseous and dusty cloud collapses to form a protostar surrounded by a disk and an envelope. This thesis uses both observations and models to study physical and chemical conditions of these protostellar systems which are likely where planets start to form.

Promotor: R. Tijdeman, Co-promotor: H.J.J. te Riele

Tomography is a powerful technique to non-destructively determine the interior structure of an object.Usually, a series of projection images (e.g.\ X-ray images) is acquired from a range of different positions.

Understanding the formation and evolution of planetary systems is one of the most fundamental challenges in astronomy. To directly image and study young exoplanets and the circumstellar disks they form from, dedicated high-contrast imaging instruments are built.

Promotor: H.J. van den Herik, B.R. Katzy, Co-promotor: K. Sailer

This research project studies the distribution and impact of medieval malaria in the Netherlands.

The research in this dissertation aims to optimise blood donation processes in the framework of the Dutch national blood bank Sanquin. The primary health risk for blood donors is iron deficiency, which is evaluated based on donors' hemoglobin and ferritin levels.

What is the optimal design of sandy solutions for sustainable climate change adaption, from an ecological, biophysical and societal point of view?

How do you engage society to stop biodiversity loss? How do you create political and social involvement to deal with climate change? And how do you balance the economic needs of industry with the negative effects of pollution? If you find these kinds of questions interesting, then this Pre-University…

The experiences of ethnic ‘Other’ females have – until recently – been widely overlooked in the study of sport. There continues to be a need to produce critical scholarship about ethnic 'Other' girls and women in sport and physical culture, in order to represent their complex, multifarious and dynamic…

Slavenvluchtelingen in Noord-Amerika

Deelproject van

Hoe hebben de purana's, als oude verhalen en anonieme teksten, bijgedragen aan de religieuze en politieke cultuur van het Sanskriet-wereldrijk? En hoe hebben verschillende mensen en groepen bijgedragen aan de verspreiding en ontwikkeling van deze teksten door de tijd en over verschillende regio's he…

De master History van de Universiteit Leiden heeft een sterk internationaal karakter en focust op Europese- en niet-Europese geschiedenis vanuit een globale context.

Wist je dat je na succesvolle afronding van de minor Chinese Economy and Society een aansluitende masteropleiding kunt volgen? Lees hier meer over de masteropleiding Asian Studies (MA).

Het project ARTIVES is gericht op de verbeelding van diversiteit door kunstenaars in Lissabon en Rotterdam in de vorm van films, optredens en (mondelinge) literatuur, met als doel om het transgressieve potentieel ervan te onderzoeken waardoor anders gedacht kan worden over migratiegerelateerde diversiteit.…

Door de opkomst van nieuwe methodes en technologieën, zoals verbeterde DNA-analyse en big data, is het archeologisch onderzoek de afgelopen decennia ingrijpend veranderd. De onderzoekers van het departement Archaeological Sciences van de Faculteit Archeologie gebruiken de nieuwe wetenschappelijke kennis…

Marokko en Nederland zijn nauw met elkaar verbonden. De aanwezigheid van een gemeenschap van Nederlanders met Marokkaanse wortels past binnen een gedeelde geschiedenis van vier eeuwen maatschappelijke en academische uitwisselingen. Als instelling die midden in de Marokkaanse maatschappij en het universitaire…

Heterogeneous catalyzed processes are highly significant to the chemical industry. Dissociative chemisorption (DC) of molecules on surfaces is always considered as a step with a high degree of rate control for heterogeneous catalysis.

Leiden University’s Academic Challenge

Quantum computing is an emerging technology, which holds the potential to simulate complex quantum systems beyond the reach of classical numerical methods.Despite recent formidable advancements in quantum hardware, constructing a quantum computer capable of performing useful calculations remains challenging.In…

In this thesis we study quantum transport phenomena on the nanometer scale, in two classes of materials: topological insulators with induced superconductivity and graphene superlattices.

Kunnen we van quantum-verrassingen quantum toepassingen maken? Kunnen we het leven onderzoeken en opbouwen vanuit de nano-schaal?

Data theory research on the analysis on the multidimensional data