In the History of the Roman Emperors, what does Herodian’s method of composition consist of and how does it relate to his writing intention, particularly in terms of political and moral idea(l)s?

Multi-objective optimization is an effective technique for finding optimal solutions that balance several conflicting objectives. It has been applied in many fields of our world, because practical problems usually have more than one desired goal. For example, developing a new vehicle component might…

Artificial intelligence algorithms govern in subtle, yet fundamental ways, the way we live and are transforming our societies. The promise of efficient, low‐cost or ‘neutral’ solutions harnessing the potential of big data has led public bodies to adopt algorithmic systems in the provision of public…

This centre brings together the research of the members of the Institute of Philosophy and affiliated academics whose work focuses on the history of philosophy broadly conceived. Research interests range from ancient to near-contemporary philosophy in various regions of the world, and cover all subdisciplines…

Who doesn't know him: the world-famous Dutch painter Rembrandt van Rijn. But did you also know that Rembrandt was a Leiden student? In 2019, Leiden University celebrated its 444th anniversary. In that lustrum year, which was also a Rembrandt year, we made the connection between Rembrandt and Leiden…

Are you thinking about writing a proposal? Or did you get a project awarded? The Project Office is there to help you! 

The authors detail the transnationality of terrorist organisations, including fundraising, communications, alliance-forming, movement and target selection.

We live in a world of things and people in the past must have been as closely entangled with their material surroundings as we are now. In the Laboratory for Artefact Studies Van Gijn takes a close look at the biographies of objects: what kind of raw material an object is made off and what is its provenience,…

This project investigates how the first generation of Dutch printed books (the incunabula, 1473-1501) affected late medieval spirituality, religious practice and visual culture in the Low Countries.

This unique collection applies globalization concepts to the discipline of archaeology, using a wide range of global case studies from a group of international specialists.

This research sets out to answer the following questions:

Nature, nurture and neural mechanisms of social emotion regulation in childhood

Very generally speaking, this study aims at questioning and re-defining the mind-body epistemic problem within contemporary dance and art culture.

This paper explores whether multilateral surveillance and policy coordination under the ES was based on a path-changing or a path-dependent mechanism

Material Culture, Settlements, and Landscapes from the Mediterranean to Western Asia

Recently, Europe was again shaken by some attacks. This ‘Elementair Deeltje’ places terrorism in a historical perspective and gives an up-to-date overview of this form of political violence.

This thesis is dedicated to the exploration of the primordial dark ages: unknown physics during the earliest stages of the Universe’s expansion that have not yet been directly probed by observations. Cosmic inflation is a burst of exponential expansion of space after the “Big Bang”.

This proposal aims at the construction of a comprehensive and authoritative scientific grammar for Dutch and Frisian in the form of a virtual language institute: het Taalportaal/the Language Portal.

This article investigates the efforts of influential Turkish Muslim civil society actors to amplify the voices of Muslim women in the Netherlands.

The authors systematically search and review relevant definitions of Security by Design (SbD) in comparison with Privacy by Design (PbD).

An assessment of Libyan legislation

On 21 January 2021, Fachrizal Afandi defended his thesis 'Maintaining Order: Public Prosecutors in Post-Authoritarian Countries, the case of Indonesia'. The doctoral research was supervised by Prof. A.W. Bedner and Prof. J.H. Crijns.

On 18 April, Alexandre Tavadian defended the thesis 'The International Civil Service: Redefining Its Independence'. The doctoral research was supervised by Niels Blokker and Brian McGarry.

The Rosalind Franklin Square, also known as the campus square, is a green meeting place for students, staff, and city residents. It’s where the university, the business community, and the city of Leiden come together.

Delineating psychophysiological endophenotypes of social anxiety disorder

The Netherlands Ministry of Defense and Ministry of Security and Justice have requested the Centre for Terrorism and Counterterrorism to complete a research project on cyber governance from a policy perspective. The results of this project will contribute to the deliverables of the fourth International…

How do technologies of computer vision, which promise to replace humans in the understanding of images, work in practice in the field of security, and what are their ethical and political implications?

At the center of this research project lies a practice-based, artistic exploration of the impact of digitalization on the lived reality of both physical and cognitive labor.

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…

In-use stocks of products can be considered as intermediaries between human needs and the physical world.

On Friday 28 November, Leiden University celebrated its broad pallet of research and education at a unique anniversary event. We took collaboration between fields of science, and between researchers and society, one step further.

Are you eager to dive into a cutting-edge approach to innovation? Do you want to explore how frugality and frugal innovation can drive sustainability? And are you up for an international, real-life challenge? If so, this Leiden-Delft-Erasmus (LDE) minor on frugal innovation is for you!

The labour market has seen significant changes in recent decades, not least in terms of greater flexibility and digitisation. Leiden University is keen to prepare students for a working life in which flexibility, resilience and adaptability will be essential qualities. The university’s vision on teaching…

This new article by Bassant Hassib and James Shires is part of a special issue for Journal of Cybersecurity, based on a selection of contributions from THe Hague Program for Cyber Norms' 2019 Conference.

In this article, Isabelle Frens, Jelle van Buuren and Edwin Bakker aim to understand anti-government protests by focusing on empty signifiers.

When and how does social anxiety develop? How can it go astray in some adolescents? How can we help troubled young people to attend school regularly and return to a normal developmental pathway?

Grotius Dialogue

Late Antiquity is characterized by migration movements, political unrest and religious strife. The way we assess these religious conflicts is often coloured by a post-Reformation understanding of ‘religion’. In my research, I show that late ancient authors understood religion in a way that differs much…

Festival, Study trip Greek and Roman History 2026

Open access, online talks on African Sign Language Studies, in International sign and English

In at least 16 recent court cases, judges took severe staff shortages into account in decisions not to impose compulsory youth care. Mariëlle Bruning, Professor of Children and the Law, comments in ‘Trouw’ on this dilemma for judges.

Conference

In at least 16 recent court cases, judges took severe staff shortages into account in decisions not to impose compulsory youth care. Mariëlle Bruning, Professor of Children and the Law, comments in ‘Trouw’ on this dilemma for judges.

How should European financial law best integrate considering the interaction of the relevant legal systems?

The Leiden Papyrological Institute is the only papyrological institute in the Netherlands, and one of the few institutes in the world where study of Greek and Demotic Egyptian is combined. This is reflected in both teaching and research. Members of the Institute are active in publishing texts from various…

How did British scholars and scientists in the period of discipline formation envision, experience and resist scholarly temptations?

To construct catalysts that can produce fuels from CO2 innumerable times, we need to learn much more about how catalysis works. Irene Groot is conducting groundbreaking research into catalysis at the atomic level.

A History of Dutch Corruption and Morality showcases 300 years of change, continuity, and diversity in the history of Dutch political corruption and public morality. It analyses a series of corruption scandals and shows how the following debates were connected to the big changes of that time: from the…

There are various links between Rembrandt and Leiden University