This project aims to improve understanding of, and responses to, the phenomenon of lone actors through analysis of comprehensive data on cases from across Europe.

We complete this thematic issue’s contribution on skill, food, and sustainability with a team report based on ethnographic research which focuses on reskilling for sustainability in multiple European locations and involving diverse social actors and stakeholders. The Food Citizens? project (2017-2024)…

On 23 juni 2019, Zygimantas Juska defended his thesis 'The Role of Collective Redress Actions to Achieve Full Compensation for Violations of European Union Competition Law'. The doctoral research was supervised by Prof. dr. T.R Ottervanger.

In this article, Sophie Vériter examines the EU’s unprecedented ban on Russian state media following the invasion of Ukraine, using securitisation theory

Chinese materia medica (CMM), comprising a diverse array of natural substances from plants, animals, and minerals, has been integral to Traditional Chinese Medicine (TCM) throughout history. This study investigates the dynamic evolution of CMM, noting shifts in species for improved therapeutic effects…

This book reveals how one publishing firm's editorial strategy helped to legitimate European colonialism in the early modern era.

The overarching goal of this thesis is to set the foundations, but also make the first essential steps towards establishing a comprehensive, mesoscopic, hydrodynamic theory of epithelial tissues. The stage is set by an exhaustive study of topological defects in passive p-atic liquid crystals, singularities…

Grasseni's contribution to this special feature on food cultures, food systems, and agriculture in Europe builds upon her ongoing project Food citizens? Collective food procurement in European cities: solidarity and diversity, skills and scale.

What is the iconography of propaganda specifically as it relates to the historical development of political ideologies in modern Egypt and how was/is this propaganda disseminated among creative fields such as cinema, art, monuments, architecture, and literature?

The Collective Experience of Empathic Data Systems (CEEDs) consortium developed novel integrated technologies that support experiencing, analysing and understanding of very large datasets.

Combining cutting-edge quantitative approaches with more traditional book history approaches, this new book offers the first history of medieval manuscript destruction in England from the medieval period to the present.

Holtz defended her dissertation ‘Collective human rights as an (onto)logical solution to climate change: reconceptualizing, applying and proceduralizing an overlooked category of human rights’ on 16 October 2025. The doctoral research was supervised by Carsten Stahn and Daniëlla Dam-de Jong.

This thesis has three main parts. The first part gives an algorithm to compute Hilbert modular polynomials for ordinary abelian varieties with maximal real multiplication. Hilbert modular polynomials of a given level b give a way of finding all of the abelian varieties that are b-isogeneous to any given…

The collection guides of archives and collections of Leiden University Libraries (UBL) have been made available via the portal Collection Guides. This has greatly improved the findability, visibility and ease of use of these collection finding aids.

In films kunnen de meest wonderlijke acties plaatsvinden. Maar zijn die acties in de 'echte' wereld ook mogelijk? En in hoeverre houden filmmakers ons voor de gek? Tijdens het Leiden International Film Festival komen film en wetenschap samen.

The medieval manuscripts collection of the Athenaeumbibliotheek Deventer, which consists of around 130 manuscripts and 20 fragments, has now completely been digitized.

Maartje van den Heuvel, researcher and curator of photography at Leiden University, will be giving a tutorial next semester to master students of Film & Photographic Studies. A great opportunity for them to work with an exceptional collection from the Leiden University Library. Van den Heuvel explains…

Promotor: Prof.dr. P. Stevenhagen, Co-Promotor: Dr. J.H. Evertse

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Why and how do people collect things? Why does a museum display one object and not another? These questions are at the heart of the interdisciplinary research programme Museums, Collections and Society. The programme is holding a conference for scholars and the general public on 5 and 6 July.

This interdisciplinary project applies data science techniques to qualitatively and quantitatively visualize the interaction between the University and the city of Leiden (Town&Gown) from 1575 onwards. One of the possible angles for follow-up research is diversity, especially from the international…

What are the new challenges for collective organisations in the logistic sector? On 25 November 2021, Raquel Alquézar Crusellas has visited the ERC group to exchange insights about her new research about collective organisations among delivery riders in Europe.

Valentina Carraro presented her paper at the workshop ‘Collective agency of international institutions’, University of Bamberg, 6-7 October 2022.

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In Democratie en totalitarisme zijn de invloedrijkste opstellen van de Franse denker Claude Lefort samengebracht. Lefort laat overtuigend zien dat de kwetsbaarheid van de democratie juist ook haar kracht is. Voor democratie is essentieel dat de macht als ‘lege plaats’ verschijnt. Zij mag slechts tijdelijk…

Dit proefschrift beschrijft een collectie aan alternatieve strategieën voor het begrijpen, ontwerpen en toepassen van lipide nanosystemen, waarin de rol van de bio-nano interacties centraal staan. In het bijzonder wordt gekeken naar de interactie van RNA-lipide nanosystemen, bekend van de toepassing…

This case study-based textbook in multivariate analysis for advanced students in the humanities emphasizes descriptive, exploratory analyses of various types of data sets from a wide range of sub-disciplines, promoting the use of multivariate analysis and illustrating its wide applicability. Fields…

Employer organizations have been presented as strong promoters of the liberalization of industrial relations in Europe. This article, in contrast, argues that the preferences of employers vis-à-vis liberalization are heterogeneous and documents how employer organizations in Spain, Italy, and Portugal…

Utrecht University Library invites researchers, students and other users of their digital collections to complete a survey about this: what material are you looking for (and can you find it), what functionalities do you use, what do you like and what could be improved? The library uses the suggestions…

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For the first time, a group of international and interdisciplinary researchers led by Karline Janmaat and her former MSc Student Chirag Chittar, have tested the several hypotheses on music simultaneously in a modern foraging society during their daily search for tubers – their staple food. They found…

This doctoral thesis focuses on Paisiello's partimenti and how to approach their realization and performance.

This PhD-research is conducted to test the hypothesis that Gutenberg and consorts developed a standardised and even unitised system for the production of textura type, and that this system was extrapolated for the production of roman type in Renaissance Italy.

The potential of bioneedles to deliver influenza vaccines was investigated.

Traditional drug discovery approaches have been hampered by (in vitro) cell-culture models that poorly represent the situation in the human body.

On 19 September 2019, Lynette Janssen defended her thesis 'EU Bank Resolution Framework: A comparative study on the relation with national private law'. The doctoral research was supervised by Prof.mr. W.A.K. Rank and prof. M. Haentjens.

De incubatietijd (van infectie tot de eerste symptomen) en latente periode (van infectie tot de start van besmettelijkheid) zijn cruciaal voor het informeren van controle maatregelen aan het begin van een infectieziektenuitbraak. Een voorbeeld is de duur van quarantaine voor potentieel geïnfecteerden,…

You are invited to sign in for the Tabula Gratulatoria for a volume that has been composed for the occasion of Prof. Dr Marc Boone’s retirement.

The Dutch museum landscape is among the most forward-thinking worldwide, in terms of innovations in engaging diverse audiences and stakeholders. Building on the museum studies and art history programmes at Leiden University, the Museum Lab furthers students’ engagement with museums.

Neanderthals at Pech-de-l'Azé I in South Western France had a striking use for manganese dioxide 50,000 years ago.

With the addition of over 16,500 new catalogue records, the collection of Johannes Tiberius Bodel Nijenhuis (1797-1872) is now almost entirely searchable online. The private collection of the Leiden map collector laid the foundation for the special collection of maps and atlases of Leiden University.…

Leiden University Libraries (UBL) recently participated in the Pagode-Europeana-China project as an associated partner. As a result, almost two hundred items related to China from the UBL Special Collections are now available via the Europeana website. The UBL was the only library to participate in…

Tax collection has become highly complex and the system is creaking at the seams. Is there an easier way to collect taxes? This is the question raised by Rex Arendsen, Professor of Tax Law, in his inaugural lecture on 16 September.