In May 2023, COI researchers collaborated to publish a special issue on the Legitimacy of Institutions for Conflict Resolution with the Utrecht Law Review.

Researchers using remote sensing technologies have characterized pre-Columbian regularly-shaped earthworks in forests in Central America and the Amazon. In tropical forested mountains in South America, two challenges arise when identifying archaeological sites through remote sensing. Firstly, sites…

How do public organizations use strategic regulatory communication in regulatory governance?

Our previous meta-analysis (Swart et al., 2019) had shown that feedback targeting text comprehension given when students perform a reading task positively influences learning from text. So far, differences in the effects of feedback were explained by design features, such as the timing and richness…

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…

What makes peace missions succeed or fail? Which new technologies will determine the outcome of wars? In recent decades, insufficient use has been made of knowledge of modern warfare, when this is crucial to European security. This is what Frans Osinga, Professor by Special Appointment of War Studies,…

Mensen worden steeds ouder. Soms in goede gezondheid, soms zijn er uitdagingen die de kop op steken. Met onderzoek, innovatief onderwijs en co-creatie met oudere mensen werken studenten van de master Health, Ageing and Society aan oplossingen voor deze uitdagingen.

WORLDING AMERICA researches how ‘play’ has been a key force in the past and present process of creating America as a coherent and hegemonic ‘world,’ from 1503 to the present.

Most people would not even consider it, starting a PhD at the age of 62. However, for the former Teylers Museum curator Bert Sliggers it was like a dream that came true: ‘The opportunity I was given felt like a gift, it brought me and Teylers Museum a lot.’

Former student of Leiden University professor Louis Andriessen at the Royal Conservatoire in The Hague, Cyprus-born ACPA researcher Yannis Kyriakides, currently developing his PhD dissertation under the supervision of Professor Frans de Ruiter and docARTES PhD supervisor/ORCiM research fellow Dr. Bob…

By documenting lexical and morpho-syntactic patterns among P’urhepecha speakers in Mexico and the US diaspora, this project will investigate the sources of language variation. The ensuing online dialect atlas will serve as an online resource for speakers, learners and researchers of the language.

In summary, the collective results described in this thesis show that nanoparticulate vaccines can be delivered intradermally by coated and hollow microneedles and evoke antigen-specific immune responses.

In this article, Linde Desmaele examines the dilemmas created by US burden sharing policies from the perspective of Washington's European protégés.

Promotor: J.G.E.M.Fraaije, Co-promotor: A. Kros

This case study demonstrates how to design and effectively deploy a (survey embedded) conjoint experiment.

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

Clearance is the most important pharmacokinetic parameter for drug dose selection. Pharmacokinetic information is typically first available in the adult population, and in general only limited pharmacokinetic data are available in children when drugs enter into the market. It is therefore of the utmost…

On 2 July, Armin Cuyvers was interviewed on the morning news show of BNR News Radio on the ongoing fight for the EU top jobs: why is it so hard to choose a new president for the European Commission, what is happening behind the scenes, and what are the chances of Frans Timmermans?

The United Nations Office for Disarmament Affairs (UNODA) has published the 2017 issue in their Civil Society and Disarmament series, titled Voluntary, Non-Binding Norms for Responsible State Behaviour in the Use of Information and Communications Technology: A Commentary. The series aims to provide…

On Wednesday 3 July 2024 Renata Schiavo successfully defended a doctoral thesis and graduated.

In a podcast episode of 'Reading Our Times' Eric Storm talks about nationalism.

Children are perfect scientists: they are bursting with curiosity, they want to know how the world works and they go exploring every day. Yet many children barely get a chance to be engaged in science. A number of scientists from the Young Academy want to change that. They have received 150,000 euros…

Leiden Professor of Maths Frans van Schooten Jnr. (1615-1660) and his wife Margrieta were painted by Rembrandt. This is the claim made by mathematician and art historian Johan Zwakenberg in his recently published article in the 2018 Leiden Yearbook. Leiden art historians are not completely convinced…

One way for governments to conduct foreign policy and promote national interests is through direct outreach and communication with the population of a foreign country. This is called public diplomacy. Historians such as Helmer Helmers and William T. Rossiter have shown that printed media were already…

A comparative study on the spatial origin and development of towns in the northern Netherlands, 700-1400.

In ancient times, the steppe in the hinterland of Petra (Jordan) was transformed into a green oasis. This project tries to shed insights in the agricultural, water management and societal processes resulting in this transformation. This will be accomplished by practicing an interdisciplinary research…

One of the three long-term research interests of our group concerns the Transformation of the Roman World (c AD 450-900).

Polarisation in our society is on the rise. What makes people increasingly radical? How do we protect ourselves from extremist, terrorist or criminal threats, be they physical or in the cyber world? And what role do intelligence services play in this?

The Academy of Creative and Performing Arts (ACPA) provides artistic research and education in the arts.

Many of the journal's issues contain short contributions from practitioners of diplomacy. These practitioners' essays offer unique insights into the world of diplomacy and they serve as a source of inspiration for researchers.

Onderzoek van de onderzoeksgroep 'War, Peace and Justice'

The Leiden Faculty of Archaeology is a world renowned academic centre for the study of the past. Our archaeologists and heritage experts are involved in innovative projects all over the world.

What are the conditions under which coercive diplomacy can compel a State to abandon its nuclear weapons program?

Astronomers Professor Christoph Keller and Dr Frans Snik will be developing a commercial module for measuring fine particulates. They have been awarded an STW Demonstrator subsidy of 138,000 euros.

After nearly 70 years, the Leiden Observatory has a new telescope. A crowdfunding action in March brought in the 20,000 euros required to build a solar telescope. On 19 September Rector Magnificus Carel Stolker officiated at the opening.

The Old Observatory in Leiden has reclaimed its most important telescope. Since the 1960s, the Meridian Circle (also known as a transit telescope) had been housed in the Boerhaave Museum. After more than sixty years, the telescope is finally back in its original location. Now, the public can enjoy it…

Currently, more than 80% of drugs are used in an off-label manner in critically ill neonates.

SMR can be used to measure the mass of adsorbed protein to nanoparticles with a high precision in the presence of free protein.

In this thesis population pharmacokinetic and physiologically-based pharmacokinetic (PBPK) approaches were applied to investigate the influence of glomerular filtration (GF) and active tubular secretion (ATS) on renal clearance in children.

Archaeologist Frans Theuws, Buddhism specialist Jonathan Silk and mathematician Ronald Cramer have each been awarded an ERC Advanced Grant of 2.5 million euros.

What are the conditions under which coercive diplomacy can compel a State to abandon its controversial nuclear (weapons) program? Based on the experience of the US coercive diplomacy against the nuclear programs of three countries, namely Iran, Libya and South Africa, Jean Yves Ndzana’s PhD research…

After a year of war against Ukraine, professors André Gerrits, Antoaneta Dimitrova and Frans Osinga look back at Russian aggression and Western unity and ahead to the new offensive.

In 1960, Albert Winsemius started to help the city state of Singapore achieve its rapid rise out of economic misery. He helped the Singaporean government understand how the Netherlands had managed to rebuild so quickly after the Second World War, with the help of the American Marshall Plan. PhD defence…

On March 12th, Jonathan Brown succesfully defended his doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Jonathan on this great result.

Staring into the clouds hoping for a glimpse of the sun, cheering in encouragement, video recordings: there was no shortage of things to do at the Leiden Observatory. More than 600 visitors witnessed the last, almost complete solar eclipse of the decade..

Our research regularly receives attention in the (Dutch) popular media. Here is an overview.

The Plants & Planets exhibition brings two worlds together in a dazzling mix of science, nature and art. It opens at Old Observatory Leiden and Hortus botanicus on 7 February.

Scientists and non-scientists co-creating breakthrough citizen science projects for measuring, understanding, and mitigating air pollution. That’s what happened during the first international workshop of the newly established Citizen Science Lab from 22 until 26 January at the Lorentz Center at Leiden…

An accurate description of reactive scattering of molecules on metal surfaces often requires the modeling of energy transfer between the molecule and the surface phonons. Although ab initio molecular dynamics (AIMD) can describe this energy transfer, AIMD is at present untractable for reactions with…