Under what circumstances do paramilitary groups limit their use of political violence? This article examines the use of political violence by the PIRA.

Video games have emerged as one of the most interesting media of the turn of the century. The peculiar characteristic of video games is the biunivocal interaction between the computer and the human player.

To what extent is it possible to utilise traditional and new media data to examine and understand the nature and scope of homicide in Indonesia?

This thesis describes the synthesis and biochemical evaluation of a variety of cyclophellitol based activity-based probes and inhibitors targeting various endo- and exo-acting retaining glycosidases. In the last two decades a variety of probes and inhibitors for (hemi)cellulose degrading enzymes have…

Why does the textural gap between the music that one can improvise and that which one can practice and learn to play (as in completely written-out music) seem to be bigger in the case of the guitar than, for example, in that of keyboard instruments?

Promotor: Prof.dr. M.A.G.J. Orrit

From the end of 2026, drone flights could be tested out of visual range in a special zone above the North Sea. Assistant Professor Benjamyn I. Scott commentys in regional newspaper ‘Leidsch Dagblad’: 'Safety remains paramount in aviation.'

From the end of 2026, drone flights could be tested out of visual range in a special zone above the North Sea. Assistant Professor Benjamyn I. Scott commentys in regional newspaper ‘Leidsch Dagblad’: 'Safety remains paramount in aviation.'

You'll be able to join us for a public film screening on Sundays at 6:30 pm and a public lecture on Thursdays at 6:00 pm (depending on the duration of the powercuts). Seats are limited and we work on a first-come, first-serve basis. Our doors open 30 minutes earlier and close 15 minutes later or when…

GitLab is a single application for the entire software development lifecycle. We use the Leiden University gitlab services

The research is part of the Faculty's research program ‘Coherent Private Law’.

Knowledge and culture subproject 2:

We know this, but we don’t act on it: eat healthily, move more, address our stress levels and sleep well. Internist and Professor of Diabetology Hanno Pijl is fascinated by the effect that a healthy lifestyle can have on health. He researches how this lifestyle is achievable and satisfying, for patients…

The NVIC offers a wide range of services for scholars and students, which are available to the staff members, research fellows and students of the participating institutions at reduced cost.

This article argues that, given the current pervasive uncertainty about the reliability of jury deliberation, we ought to treat it with epistemic humility.

Gold nanorods are biocompatible nanoparticles that present an excellent two-photon signal that can be used to get high spatial resolution inside living cells. Gold nanorods are photostable and therefore can be followed inside cells for long time, with possible applications as trackers in live cells.

Extending our current arsenal of antibiotics is key to staying ahead in the arms race between humans and resistant bacteria.

In November we went to a real, biodynamic farm (Kwekerij Eko Logisch) and listened to David, a farmer who believes you can limit harm to the environment while still growing heaps of vegetables, fruits, and herbs. On the two-hour visit, we were shown around the farm and even encountered some animals.

This thesis probes under what conditions quantum computing presents an advantage over classical computing.

Evolution acts via mutations in amino acid sequences. Substitution of essential amino acids leads to a nonfunctional protein. l.

Quantum computing is a novel paradigm for computation, which is nearing real-world impact with the coming generation of limited, but nonetheless powerful quantum devices.

Leiden is a lively university city, brimming with history and boasting a student life that’s tangible just about everywhere.

Students must take a limited number of "accent courses" to complete their curriculum. These are selected courses offered by the Creative Intelligence & Technology MSc program itself.

An exploratory study on the role of family members of those who joined jihadist groups

Promotor: Richard D. Gill

The Agent Based Modelling for Archaeologists (ABMA) project is dedicated to developing Open Educational Resources (OERs) and accompanying materials for agent-based modelling (ABM) in Archaeology.

How does having limited access to the social world affect Deaf or Hard of Hearing (DHH) children’s emotional development? And in turn, how do impairments in emotional functioning affect social development and the development of psychopathology?

Emily Wolff, PhD candidate at Leiden University, wrote a paper about the inclusion of imperial citizens in the Dutch post-war welfare state.

This section features online articles by or about the team members of the Food Citizens? project.

Although each Dutch university has its own culture and tradition, there are some practices that are common within the academic approach in the Netherlands. Four things you need to know about our academic culture:

Material Crossovers

In this research project child language phonology is studied from the perspective of a psycholinguistic speech-production model and this model is in turn studied from the perspective of developmental phonology.

The Dutch Research Council (NWO) offers two grants that may support PhD candidates.

On 20 March 2019, Tim Dekkers defended his thesis 'Mobility, Control and Technology in Border Areas: Discretion and Decision-making in the Information Age'. The doctoral research was supervised by Prof. dr. J.P. van der Leun en Prof. dr. M.A.H. van der Woude.

With regard to governance, policies and law, many Muslims and Muslim countries recognise the possibility that Islam has something important to say about the way society is to be ordered, governed, and regulated.

This paper examines cyber intelligence in the context of national and international security.

LEGITIMULT examines how Covid-19 measures by governments impact multilevel governance and democratic governance in 31 European countries

April 2021 saw the publication of the book ‘Cross-Border Protocols in Insolvencies of Multinational Enterprise Groups’. This book was published by Edward Elgar Publishing. It is written by Ilya Kokorin and Bob Wessels. The book serves as a comprehensive introduction to insolvency protocols and focuses…

This NWO-funded VICI project (2025-2030) led by Prof.dr. Petra M. Sijpesteijn examines the place-making processes in the early Islamic Empire.

The main objective of this research is to map out the cities of the Roman Near East in the imperial period, with a focus on location, city size and urban features, in order to study the form the urban system and its levels of integration.

Born in Europe roughly 100 years ago, quantum physics brought forth a veritable technological revolution through semiconductors, lasers, fibre optics, and many other technologies that are today ubiquitous in our lives. Now, during the second quantum revolution, Europe can take the lead once more in…

Fabio Cristiano contributed two chapters to the Routledge Companion to Global Cyber-Security Strategy, edited by Scott N. Romaniuk and Mary Manjikian.