This book investigates how the rulers of the Habsburg world empire developed and implemented a central maritime policy for the Netherlands and appointed an admiral of the sea or admiral-general for that purpose.

Besides being the author of such a classic work of literature as The Hobbit, Tolkien was also Professor of English Language and Literature in Oxford. How did he incorporate his research in his fiction? An international conference on the subject is being held in Leiden on 18 June.

In Europe, archaeological traces of fire become more frequent between 300,000 and 400,000 years ago; but could the earliest occupants have survived without fire for at least half a million years before this? How could the early occupants of Europe have kept warm and processed meat without fire?

As a contribution to the changing legislation and evolving societal attitudes concerning environmental issues, this project aims to enhance and manipulate the plants’ own natural defense mechanisms against western flower thrips (WFT).

What can continuity and change in the manufacturing of locally made ceramics from the early colonials Spanish towns of Concepción de la Vega, Cotuí and Nueva Cádiz (1492-1600) tell us about the choices people made in ceramic production as a reaction the the changing social environment?

When do fire making tools appear in prehistory, and how might the use of these tools manifest in the archaeological record?

Women in the Middle Ages often wore better quality clothes than men. This is one of the conclusions drawn by Leiden archaeologist Chrystel Brandenburgh, who studied textile remnants from the period from 400 to 1000 A.D. PhD defence 10 May.

The Historia Naturalis Brasiliae Reconsidered

Generations of Leiden students and academics have done archaeological research into the early medieval history of Oegstgeest. This makes this old settlement one of the best-documented sites from that era. In a new book Leiden researchers take stock.

The Greater Angkor Region in contemporary Cambodia was dramatically more urbanized in the 13th century than previously thought, and home to 700.000 to 900.000 people. These discoveries were made by a research team led by Sarah Klassen. Their findings are published in Science Advances.

A rare medieval bookmark emerged in Leiden University Library. Book historian Erik Kwakkel found the disk in an archive of manuscript descriptions called the Bibliotheca Neerlandica Manuscripta. It was likely put their in the early twentieth century by Willem de Vreese, who made the descriptions. The…

A number of scholars joint forces to analyse and re-analyse a number of Merovingian cemeteries and publish the results in the series Merovingian Archaeology in the Low Countries published by Habelt Verlag in Bonn (Germany). We call it the ANASTASIS project. This is the third volume in which the data…

What made the early Islamic empire so successful and have we missed the story by neglecting crucial evidence? The 7th-century Arab conquests changed the socio-political configurations in the Mediterranean and Eurasia forever. Yet we do not really know how the Arabs managed to gain dominance of this…

How might viola and string quartet playing in the performer-centered, moment-to-moment and communicative style heard on early recordings be brought about today?

On Wednesday, 22 September, at 17.00, this interdisciplinary research group kicks off a series of online seminars.

Since the adoption of agriculture people have cultivated fields. The project concerns all kinds of aspects related to raising crops.

Promotor: A.P.IJzerman Co-promotor: A. Bender

As Scaliger professor, Erik Kwakkel is responsible for the academic context of the complete Special Collections of the Leiden University Library. His inaugural lecture on 15 May will focus mainly on the section closest to his heart: Medieval books.

This research deals with the royal houses of the Vijayanagara Empire and four of its successor states: Ikkeri, Tanjavur (under both the Nayaka and Bhonsle rulers), Madurai, and Ramnad. This study is thus concerned with dynastic politics and imperial legacies in south India between the 14th and 18th…

Central to Nuranisa’s PhD project is the cultural diplomacy practiced by the Javanese courts of central Java (Surakarta, Yogyakarta, Pakualaman and Mangkunegaran) in response to the increasing Dutch colonial power in the 19th and early 20th century. The Javanese sultanates were incorporated into the…

What are the capabilities or limitations of traveling between islands and how does this reflect seasonal variation? Is it possible to show higher levels of connectivity between islands based on generated pathways between several sites on two separate islands?

Paul van Enckevort defended his thesis on 3 June 2020.

A dense region of a gaseous and dusty cloud collapses to form a protostar surrounded by a disk and an envelope. This thesis uses both observations and models to study physical and chemical conditions of these protostellar systems which are likely where planets start to form.

ASLU 7 - A.E. de Hingh

This study examined the effects of a classroom-focused intervention on different domains of early literacy. The intervention consisted of shared e-book reading combined with a print referencing technique done via a SMART board. The specific goal of the study was to examine whether children could be…

Alumnus Peter Burger – along with his colleague Alexander Pleijter – is the face of fact-checking in the Netherlands. ‘My degree led straight to this.’

Mr. J. Sun defended his thesis on 21 March 2018.

Als gevolg van de grote technologische vooruitgang in de gezondheidszorg worden in toenemende mate gegevens verzameld tijdens de uitvoering van klinische onderzoeken.

In order to gain a better insight into the basis of the rapid jasmonic acid (JA)-mediated stress response, an integrated approach using a targeted high-resolution mass spectrometry-based (HRMS) platform, was conducted to monitor the metabolism of JA using the model system of cell suspension cultures…

How can historically-informed performers step outside the confines of the work-concept?

On 20 September 2023 Mark van de Water successfully defended a doctoral thesis and graduated.

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…

Lecture, Research Seminar Medieval and Early Modern History

Archives were a common target during the Second World War, and hundreds suffered damages. Among these archival losses, the losses to medieval manuscript collections stand out.

Can a newly developed, app-based, personalized maintenance program enhance the effectiveness of the exposure-based one-session-treatment for children with a specific phobia?

Medievalism is the area of academic study that investigates the reception and reconstruction of the medieval past since the Middle Ages came to an end.

This symposium (May 22) will explore topics such as the loss of and damage done to medieval manuscripts in the twentieth and twenty-first centuries through an interdisciplinary set of papers. Speakers will highlight projects aimed at identifying and rehabilitating damaged manuscripts and archives, and…

On June 26-28, 2024, the Annual Conference of the International Society for the Study of Medieval Theology will take place. The theme this year is "The End: Finiteness, Death and Completion in Medieval Theology". Deadline for paper proposals: 20 December 2023.

In a longitudinal study, Eichengreen and colleagues explored how the certain aspects of emotional intelligence impact the development of adolescents’ mental health, thus identifying potential warning signs and targets for intervention programs. Despite a higher risk for mental health issues and lesser…

To what end and how does Plautus constantly underline the Helleni(sti)c provenance of his art? How does this aspect relate the author’s originality?

In 2024, Professor Joanita Vroom received a substantial grant from the Packard Humanities Institute (PHI) in support for her Hinterlands of Medieval Chalcis Project (HMC Project) in Greece. PHI, a California-based non-profit organization, is dedicated to archaeological research as well as to the preservation…

Maritime conflict management is the regulation of conflict in relation to the sea. It comprises conflict enforcement, conflict resolution and conflict avoidance. How did victims of maritime conflicts claim and obtain damages or demand compensation or reparation?