This PhD thesis concerns the topic of arithmetic geometry. We address three different questions and each of the questions in some way is about counting how big some set is or can be.

Even though more than 4000 extra-solar planets are known today, only a small fraction of these has been captured in an image. To better understand the planet formation mechanisms in solar-like environments we started the Young Suns Exoplanet Survey (YSES).

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.

Promotores: Prof.dr. J. Aarts, Prof.dr. J.M. van Ruitenbeek

This dissertation explores matters of collectivity, drawing from the experience of working with the Amsterdam-based collective Hackers & Designers (H&D).

Low-carbon (LE) technologies have a significant potential to reduce the total carbon emissions in China.

Promotor: Prof.dr. G.R. de Snoo

PURPOSE: To monitor the biodistribution of IgG1 aggregates upon subcutaneous (SC) and intravenous (IV) administration in mice and measure their propensity to stimulate an early immune response.

On 25 November 2018, Laurens de Hoog defended his thesis 'De prioriteitsregel in het vermogensrecht'. The doctoral research was supervised by Prof. mr. W.G. Huijgen.

Leiden psychologist Wilco van Dijk and communication scientist Jaap Ouwerkerk of VU University Amsterdam published a book about the emotion Schadenfreude. The authors describe what the emotion Schadenfreude really is, when people experience the emotion, and what role it plays in social relations.

This collection of essays is the first to compare the emergence and development of these different types of regional identities.

Embracing the Provinces is a collection of essays focused on people and their daily lives living in the Roman provinces, c. 27 BC-AD 476. It offers an overview of current research on Roman provinces and frontiers, deconstructing some long-held preconceptions and providing refreshing insights into unexplored…

Plants and soils from natural ecosystems harbor great diversity of soil microorganisms, which could potentially contribute to the sustainability of horticulture. The knowledge about using wild plant species and soil from natural ecosystem to improve the crop health will advance the application of ecological…

Nietzsche's most famous and infamous book Thus Spoke Zarathustra is perhaps the most read, but probably also the least understood, book in Nietzsche's oeuvre. Nietzsche considered it his highlight. He called it a symphony, a holy book, a fifth gospel and even the greatest gift ever given to humanity.…

This edited collection brings together canonical texts on intermedia and expanded cinema in 1960s Japan, most of which translated into English for the first time, in hope to introduce the local critical discourse on this subject to international readership.

Promotores: C. J. ten Cate; M. A. Ainslie. Co-promotor: W. Slabbekoorn

What are the functions of the endocannabinoid system?

Subproject of

Part of ‘Moralising Misfortune: A Comparative Anthropology of Commercial Insurance’, an ERC Consolidator project of Erik Bähre.

In the research programme Microbial Sciences we perform state-of-the-art research in the field of biotechnology and microbial sciences.

The demand for neodymium-iron-boron (NdFeB) magnets is rapidly growing, while the neodymium supply chain is under pressure. Recycling can alleviate these issues. This thesis investigates the potential for deploying novel magnet recycling technologies and their environmental consequences.

Fascism tends to be relegated to a dark chapter of European history, but what if new forms of fascism are currently returning to the forefront of the political scene?

Salicylic acid (SA) is a plant hormone, which is involved in the defense responses to pathogens and to abiotic stress, and in the regulation of plant growth and development.

“Transitional justice” is a field of practice, policy and study that focuses on the ways that societies respond to legacies of large-scale atrocities though tribunals, truth commissions, reparations, and other mechanisms.

On 29 November 2018, Roberto van den Heuvel zijn defended his thesis 'Duidelijkheid van fiscale wetgeving'. The doctoral research was supervised by prof. dr. A.O. Lubbers en prof. dr. H. Vording.

Turning the tables on the misconception that Ezra Pound knew little Greek, this volume looks at his work translating Greek tragedy and considers how influential this was for his later writing.

Many galaxy clusters exhibit bright diffuse radio emission that traces the underlying structure of the intracluster medium (ICM).

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.

A century ago, it was unclear whether the stars in the sky were clustered in groups, or widely spread in the universe.

ASLU 11

On the 24th of May, Brenda Assendelft successfully defended a doctoral thesis. The Leiden University Centre for Linguistics congratulates Brenda on this achievement!

Kartika Setyawati defended her thesis on 12 November 2015

The future of Europe as a community of democratic states is deeply uncertain. The European Union, founded to promote ‘ever closer’ integration, aims nominally for peaceful, prosperous cooperation. But this ideal has been battered by a series of bruising crises, and now by war.

Promotor: H.W. Lenstra

This thesis mainly extends the theory of positive operators on Riesz spaces to a setting of pre-Riesz spaces.

IoT technology poses serval opportunities to supply chains. This thesis employs grey correlation and forecasting models, system dynamics, agent-based modeling, and ex-ante LCA to investigate and quantify the opportunities and risks of IoT-enabled sustainable supply chain operations from both industrial…

The Oxford Handbook of Dutch Politics provides a comprehensive longitudinal overview of the state of the art of academic research on the Dutch political system: its origins and historical development, its key institutions, main fault lines, pivotal processes, and key public policy dynamics. In each…

An interdisciplinary collection of the best international scholarship on Muslim youth.

Ice, the solid state of water, plays an important role on our planet as well as the entire universe.Despite the fact that an individual water molecule has a very simple structure, its chemical bonding in the solid phase can be surprisingly complex.

Rutger Leukfeldt, special chair of Governing Cybercrime, and colleagues investigate the link between Protection Motivation Theory (PMT) factors and self-protective online behavior.

In response to the challenges imposed by the COVID-19 pandemic, governments worldwide adopted a variety of strategies that include not just preventive or mitigation strategies adopted to 'flatten the curve', but also interventions aiming to mitigate economic and social impacts of the pandemic.

Zebrafish is an excellent model organism for studying various human diseases. Due to opaqueness of the adult phase, in vivo studies are restricted to early embryonic stages. This raises the need for rapid sensitive and non-invasive in vivo imaging methods to follow developmental processes, not only…

Early Medieval Grave Reopenings in the Low Countries

Public organizations have been confronted with severe budget cuts as a result of the most recent crisis. Public managers are tasked with the implementation of cutbacks. Using different case studies within Dutch ministries and the prison sector, we assess public managers’ change leadership in times of…

On the 23d of May, Sanne Rotmeijer successfully defended a doctoral thesis. The Leiden University Centre for Linguistics congratulates Sanne on this achievement!

Wout Broekema highlights how organisations not only learn from crises but also forget, losing crucial knowledge and practices over time.

This thesis examines the link between simple molecules and the underlying structure and chemistry within protoplanetary disks - the birthplaces of planets.

On 23 June 2020, Santy Kouwagam defended her PhD-thesis 'How lawyers win land conflicts for corporations: Legal Strategy and its influence on the Rule of Law in Indonesia'. The doctoral research was supervised by Prof. A.W. Bedner and Prof. C.E. von Benda-Beckmann.

Corporeality, intimately bound to the notion of space, to the diffuse border that connects, entangles, and fuses an inside and an outside, is understood in this book as a space which puts the individual at stake as a war machine that, in its fight for a form of life, redefines political territories.

Consequences for sediment stability and seston trapping