As a new vision on food production, the feasibility study on LED light to grow crops with the biological- and chemical evaluation of final products.

What is the role of local authorities and communities in shaping how inter-Schengen borders are understood and dealt with?

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

In this thesis we classify the pairs (p,G), where p is a prime number and G is a finite p-group possessing an intense automorphism, i.e. an automorphism that sends each subgroup of G to a G-conjugate, that is non-trivial and whose order is coprime to p.

Promotores: R. Tijdeman, K.J. Batenburg

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

This article provides a comprehensive analysis of the Islamic State's use of images taken by drones, drawing on a dataset of ISIS propaganda images from October 2016 to December 2018.

What are the institutional dynamics of the adoption of internal market legislation?

Promotor: Prof.dr. H.A.G. Wijshoff

Promotor: W. T. F. den Hollander, F. H. J. Redig

Promotor: I. A. G. Snellen, Co-promotor: M. A. Kenworthy

In this book, Sarah Giest, Assistant Professor at the Institute of Public Administration, provides insight into the collaborative and absorptive capacities needed to provide public support to local innovation through cluster organizations.

Mechanical forces are known to play an important role in bacterial colonies. In this dissertation, we study the self-organization at various stages of growing bacterial colonies, and focus on the mechanical effects of cell growth.

Managing Diversity: Supervising Functions in Managing Colonial Workplaces

Former PhD, Bachelor and Master students of the Van Exter Lab

Since 2005 Leiden fieldschools have maintained local collaborations with archaeologists on Martinique carrying out surveys and excavations.

The van Exter group has an extensive history of prior research in classical and quantum optics. As former part of the group of Han Woerdman, we have studied topics as diverse as:

Science, Institute of Biology Leiden (IBL)

This thesis contains results on the arithmetic and geometry of del Pezzo surfaces of degree 1.In Chapter 1 we give the necessary background, assuming the reader is familiar with algebraic geometry.

The Risk and Regulation Lab from organises events and workshops in Leiden and The Hague. On this page you can read reports of the events that already took place.

This project investigates the well-preserved agricultural terraces of the Inn valley and the evolution of resource use in the inner Alps.

Miranda Smit, Ineke van der Ham and colleagues have published a paper in Experimental Brain Research, entitled: Body ownership and the absence of touch: Approaching the rubber hand in- and outside peri-hand space.

What can languages spoken in the Lesser Sunda Islands today tell us about the histories of its various population groups?

Science, Institute of Biology Leiden (IBL)

The Berlagevlag goes to the Wijnhaven District, a design by Geurst & Schulze architects, with its Leiden University interior designed by Studio Leon Thier architecture with the assistance of StudioLEFT. The Hague Architecture Café (HaAC) and the BNA in The Hague want to use the award to promote the…

Neural networks have a wide range of applications. In Leiden, psychologists use them to build robot brains, whereas archaeologists use them to hunt for prehistoric graves.

To what extent are there differences between countries in and outside the European Union and the Schengen area in the level of crimmigration, the merger between migration control and crime control, and to what extent can these differences be explained by the way in which state and non-state actors in…

To be able to measure small forces or small deviations from Boltzmann, the external vibrations at the resonance frequency must be very low. To achieve this, we have developed a very soft vibration isolation system and combine it with several other measures to reduce vibrations in our dilution refrigerators.…

Science, Institute of Biology Leiden (IBL)

In June and July 2012 a Leiden Fieldschool was conducted at the late pre-Columbian site of Anse Trabaud in southeastern Martinique. High levels of preservation and waterlogged contexts revealed spectacular finds.

Minims are letters that are made up of short, vertical pen strokes, such as 'm', 'i', 'n' and 'u'. In Gothic script, there is often little distinction between letters composed of minims. Assistant professor of medieval literature Krista Murchison has written an article in History Today on the hidden…

The Ra’s al-jinz project tackles economic diversification and social complexity in non-urban societies, from the perspective of Eastern Arabia, by exploring the Early Bronze Age settlement of Ra’s al-jinz RJ-3.

In Leiden University's Vision on Sustainability 2030, biodiversity (biological diversity) is an important focus in its teaching and research and on its campuses.

On September 13 and 14 Utrecht University, Leiden University and Maastricht University are organizing a two day conference on Procedural rights in criminal proceedings in the European Union, offering a venue for practitioners and young scholars to exchange experiences and ideas on this subject matter.…

A new 5.7 million euro research project will ensure that lettuce will be more resistant to pathogens and climate effects and will grow better in new cultivation systems. Together with other Dutch researchers, Leiden biologists will map the characteristics and genetic information of 500 wild and cultivated…

On September 13 and 14 Utrecht University, Leiden University and Maastricht University are organizing a two day conference on Procedural rights in criminal proceedings in the European Union, offering a venue for practitioners and young scholars to exchange experiences and ideas on this subject matter.…

Fresco Sam-Sin teaches the almost extinct language Manchu. His appointment one day in the week is no match for his enthusiasm. But that doesn't stop him. He is also involved in exporting his online translation platform into other languages and other countries.

In a week in which the threat of violent protest against taxi platform Uber made headlines from Athens to Amsterdam, Jorrit Rijpma (Europa Insitute) and Sophia Ranchordás (Groningen University) organised an Leiden Law Exchange (LLX) Roundtable on the recent judgment of the European Court of Justice…

Desertification is threatening 250 million people worldwide. Ecologists have tried to predict the spread of deserts. Help is now at hand from an unexpected source: mathematicians.

Dutch greenhouse horticulture is a world leader when it comes to innovative capacity and sustainability, but ‘the challenges are great in terms of energy, water, environment and biodiversity,’ says Peter van Bodegom, coordinator of AgriFood at the Centre for Sustainability of the Leiden, Delft, Erasmus…

Migration and crime are in the spotlight in society. Within the Institute for Criminal Law and Criminology, research in this area has strongly developed in recent years. The concept of Crimmigration is central to this.

The focus of the new Business Studies' Chair is on academic business research, in particular related to consumer pricing and its legal implications. “Product and services pricing are a vital aspect of society, and thus play an important role in the legal field”, says Professor of Business Studies at…

Knowledge and culture subproject 3:

The map application includes information from old and new buildings archaeological projects. This makes it possible to investigate whether water facilities (wells, cisterns) and waste facilities (cesspits, sewers) were the privilege of Leiden’s wealthy elite in the late 16th and 17th centuries or whether…

What is dark matter? How do supermassive black holes form? ‘Primordial’ black holes might hold the answer to these long-standing questions. Leiden and Chinese cosmologists have identified a new way in which these hypothetical objects could be produced just after the Big Bang. Publication in Physical…

Building the neutrino detector KM3NeT on the Mediterranean Sea floor has picked up pace. Five detection lines, each carrying eighteen detectors, have been sunk and installed, and the first measurement data are coming in, says neutrino physicist Dorothea Samtleben.

Why does it turn out to be so complicated to solve sustainability issues if everyone ‘knows’ about these problems? This was the central question in a masterclass on Sustainability for alumni provided by Leiden scientists active in public administration and environmental sciences.

From bedtime stories about mathematics to podcasts about microplastics and games on weeds: master students from the Science Communication & Society track presented the real-life products they developed during their final presentations on 20 December. Many of the products are already implemented by c…

How can a single origami crease pattern be folded into two precisely defined target shapes? Researchers at AMOLF and Leiden University have created an ‘alphabet’ of 140 origami ‘puzzle pieces’ that allows them to do just that, as described today in Nature Physics. This discovery could help in the construction…