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If Gerard Fieret’s photography has been unjustly ignored until recent exhibitions in New York, Amsterdam, and Paris, his poetry continues to be unknown outside of the Netherlands. Across more than ten published collections, Fieret gives form to a body of poetry in which a desire to record the urban…

Promotor: Prof.dr. T. Hankemeier, Co-Promotor: R.J. Vreeken

The general objective of this thesis is to determine a typology of verbal derivation in Ethiopian Afro-asiatic languages.

This monograph focuses on clustering of objects in high-dimensional data, given the restriction that the objects do not cluster on all the attributes, not even on a single subset of attributes, but often on different subsets of attributes in the data.

This dissertation focuses on the question how text and paratext contribute to the way that text in a network-like environment is clearly bordered and at the same time can easily be linked to other texts.

This book is about the archaeology of indigenous peoples who thrived across the Caribbean, the Guianas, and the Lower Amazon basin just before the European invasion, and who also remained central to the early history of conquest and colonization.

One of the key quests in astronomy is to study the growth and evolution of galaxies across cosmic time. Radio observations provide a powerful means of studying the formation of stars and subsequent buildup of distant galaxies, in a way that is unbiased by the presence of dust.

Promotor: Prof.dr. A. P. IJzerman, Co-Promotor: Dr. L.H. Heitman

Promotor: Prof.dr. A. Achucarro

The lipid matrix in the stratum corneum (SC), the upper layer of the skin, plays a critical role in the skin barrier. The matrix consists of ceramides (CERs), cholesterol (CHOL) and free fatty acids (FFAs).

Ineke Smit defended her thesis on 17 September 2019

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-…

Promotor: Prof.dr. P. Stevenhagen, Co-promotor: Prof. dr. B. de Smit

Pre-modern long-distance trade was fraught with risks which often created conflicts of interest. The ensuing disputes and the ways the actors involved dealt with them belong to the field of conflict management.

The figure of the barbarian has captivated the Western imagination from Greek antiquity to the present. Since the 1990s, the rhetoric of civilization versus barbarism has taken center stage in Western political rhetoric and the media. But how can the longevity and popularity of this opposition be accounted…

This thesis systematically analyzes the physical-chemistry of lipid-graphene interactions with the major objective of reconciliating the variety of results reported in the literature.

At the moment, over 350.000 chemicals are registered worldwide for production and use. Their application, however, may harm human health and the environment.

Promotor: A. Kros

Up to 45% of patients with Parkinson's disease experience impulse control disorders, characterised by a loss of voluntary control over impulses, drives or temptations. This study aimed to investigate whether previously identified genetic and psychiatric risk factors interact towards the development…

On 19 December 2019, Reza Eftekhar defended his thesis 'The Role of the Domestic Law of the Host State in Determining the ratione materiae Jurisdiction of Investment Treaty Tribunals: The Partial Revival of the Localisation Theory'. The doctoral research was supervised by Prof. E. de Brabandere.

The overall theme of this thesis is to complement the electrochemical data acquired in fuel cell research with in situ X-ray photoelectron spectroscopy (XPS) and soft X-ray absorption spectroscopy (XAS).

How do humans control their thoughts and actions, and what can high-field brain scanning reveal about the underlying processes?

The living plant collections form the heart of the Hortus botanicus Leiden and serve as a vital resource for scientific research. By studying these collections, researchers can explore biodiversity in a unique way and conduct experiments on living material.

In this research we have studied how teaching graphing formulas by hand (i.e. sketching a graph of a formula) could promote grade 11- and 12-students’ symbol sense.

In December 2024, Cambridge University Press published the book Regulating Competition in the Digital Network Industry by Jasper van den Boom, Assistant Professor of EU competition law at the Europa Institute of Leiden University. The book introduces a new analytical framework for understanding competition…

Ig Nobel

Metaphysics as Praxis: Rereading Dogen's Metaphysics Through Deleuzian Pragmatism and Pratimutpada

In the Netherlands judges are not the only ones to impose sentences. The Public Prosecution Service and the authorities can also pass sentences. Experts from Leiden research how these sentencing processes work and how they can be improved in order to protect the legal status of the public.

In dit unieke uitwisselingsinitiatief volgen studenten van de Faculteit Rechtsgeleerdheid samen met gedetineerde personen een vak, binnen de muren van de gevangenis.

The research programme Probability Theory focuses on probability theory and on operations research.

Researchers at Leiden Observatory study the fundamental physics that creates structure in the Universe. These processes collect matter into galaxies and gas into stars. With the use of powerful telescopes and advanced calculations and computer simulations, Leiden astronomers seek to understand the origin,…

A cautious response to a crisis or terrorist act avoids the creation of a culture of fear. This is another way to reduce our vulnerability to terrorism.

This special issue of the International Forestry Review talks about how logging really affects society.

The current migration flow into Europa demands effective measures. Leiden experts examine whether these measures are legal and hold up a mirror to policy-makers.

LIAS has a School of Asian Studies (SAS), a School of Middle-Eastern Studies (SMES) and a School of Religious Studies (LUCSoR). These designations, and the fields within them, remain foundational to our work. At the same time, the academic community benefits from the presence of cross-regional networks…

'Technology, law and justice' is one of Leiden Law School's four research focus areas.

Reviewed by Simon Polinder.

On Monday 10 December, the Polish Commissioner for Human Rights dr. Adam Bodnar delivered the eighth Raymond and Beverly Sackler Distinguished Lecture on Human Rights at Leiden Law School. The event marked the annual celebration of International Human Rights Day, which was proclaimed to commemorate…

To be eligible for Astronomy at Leiden University, you must meet the following admission requirements.

To be eligible for Research in Bio-Pharmaceutical Sciences at Leiden University, you must meet the following admission requirements.

To be eligible for Biodiversity and Sustainability at Leiden University, you must meet the following admission requirements.

To be eligible for Physics at Leiden University, you must meet the following admission requirements.

To be eligible for Bio-Pharmaceutical Sciences and Business Studies at Leiden University, you must meet the following admission requirements.

To be eligible for Global Political Economy at Leiden University, you must meet the following admission requirements.

To be eligible for European Union Studies at Leiden University, you must meet the following admission requirements.

To be eligible for Physics and Education at Leiden University, you must meet the following admission requirements.