The dental remains of 25 enslaved Africans from the site of Newton's Plantation, on Barbados, were subjected to isotope analysis. Previous research had pointed out that the locally born individuals were subjected to high concentrations of lead poisoning. A new study, done by Dr Jason Laffoon among others…

Sevil Cakir-Kilincoglu defended her thesis on 18 December 2019

Emeritus Professor of Applied Statistics Jacqueline Meulman received an honorary membership during the annual meeting of the Netherlands Society for Statistics and Operations Research (VVSOR). This makes her the eleventh honorary member of the society.

Description of Effects of glufosinate-ammonium on off crop vegetation.

The emissions of the Chinese industrial sector alone comprise 24.1% of global emissions (7.8 GtCyr−1 in 2015). This makes Chinese industrial emissions of unique national and international relevance in climate policy. This study reports a literature survey that quantitatively describes the evolution…

The aim of the project is to contribute to the process of archive formation ongoing in Post-Apartheid South Africa through the inclusion of photographs that have been either unacknowledged or excised from the national canon.

Lecture, Sociolinguistics & Discourse Studies Series

Social relationships of students are important. Especially for students with problem behavior. How can a teacher support students in their social relationships via their own interactions with students? A lot, as is shown by a meta-analyses of Hinke Endedijk. She assessed almost 300 studies about teacher-student…

Speed skating coach and human movement scientist Jac Orie has been capturing all details about the performance of 'his' skaters for fifteen years. Thanks to data scientist Arno Knobbe, who calculates the collected data in new ways, Orie can train his team even smarter in the run-up to the Olympic Winter…

The aim of this study is to further develop the Open Science Monitor, which started as a pilot study.

What are trait-trait relationships in wetlands? To what extent the so-called leaf economics traits deviate from terrestrial ecosystems? How traits specific to wetland plant relate to plant strategies? What’s the relationship between wetland plant traits to the ecosystem functioning (e.g. productivity,…

This dissertation takes a technological approach to ceramic production and provides a fine-grained view of the circum-Caribbean region.

A project to explore the configuration of different types of settlement and its role in the evolution of landscape, both in pre-Roman times and in the so-called Colonial landscape. We used several techniques of field survey, pottery classification and other non-invasive approaches to the archaeological…

Yuxi Nie defended her thesis on 15 October 2019.

This dissertation focuses on developing new mathematical and statistical methods to properly represent time-varying covariates and model them within the context of time-to-event analysis.

Networks play an important role in various studies, ranging from analysing epidemics in human populations to studying connectivity in electrical circuits. Vincent Traag contributes to the development of igraph, a popular package for analysing large networks.

In several Mediterranean regions archaeological sites have been mapped by fieldwalking surveys, producing large amounts of data. These legacy site-based survey data represent an important resource to study ancient settlement organization. Methodological procedures are necessary to cope with the limits…

Archaeologist Jason Laffoon was awarded an NWO Vidi grant for an innovative investigation into ancient migrations in the western Caribbean. The innovative character of this research project lies in the wide-scale application of isotope analysis and isotope mapping. ‘We aim at further developing methods…

igraph, an important open source network analysis library, will receive two grants of $400,000 (approximately €340,000) over the course of the next two years.

Why use Google Maps when you can also calculate your bike route based on your own data. Statistician and cyclist Alexander Dürre sees statistics in everything around him. He analyses data of soccer games and calculates the possible winners of cycling races. ‘When I have too much time, I apply statistics…

PhD defence

Social science research helps us understand human behaviour and social structures. These are determined by various factors, which makes the research complex and increases the likelihood of drawing the wrong conclusions. The choice of research method and analysis is therefore extremely important. It…

We focus on natural products research, traditional medicine, ethnobotany and phytochemistry.

In this thesis we will explore the use of fuzzy systems theory for applications in bioinformatics.

Violence during war often involves upswings and downturns that have, to date, been insufficiently explained. Why does violence at a particular point in time increase in intensity and why do actors in war decrease the level of violence at other points? Duyvesteyn discusses the potential explanatory variables…

In 2016, Leiden University hosts the monthly meetings of the Music and Cultural Analysis reading group.

Promotor: Prof.dr. T. Hankemeier, Co-promotor: T.H. Reijmers

Most of current public-key cryptography is considered insecure against attacks from sufficiently powerful quantum computers. Post-quantum cryptography studies methods to secure information resistant against such attacks. One proposal is isogeny-based cryptography, which bases its security on computational…

From 1 August, Hermen Jan Hupkes has been appointed Professor of Non-Linear Analysis at the Mathematical Institute. 'Initially I don't think that much will change,' Hupkes says. 'My research and supervising future researchers will continue as before.'

The production, use, and exchange of bodily ornaments through the lenses of the microscope

Through the Academy of Creative and Performing Arts, multiple gifted bachelor and master students of Leiden University and the University of the Arts The Hague can fully develop both their artistic and academic talents by choosing academic or artistic minors or electives.

Can we identify different degrees of economic integration, both within and between regions, on the basis of archaeological proxies?

We explored the Universe using weak gravitational lensing, a phenomenon that occurs when light from distant galaxies is bent by the gravitational fields of closer cosmic objects, much like how a lens distorts light.

‘There’s a lot of evaluation in the Netherlands, but this doesn’t always lead to change,’ says Wout Broekema, Assistant Professor of Crisis Governance at the Institute of Security and Global Affairs. Learning from a crisis is complicated, but experts can help.

Through a range of case studies spanning the post-Cold War period in Iraq, Moldova and Serbia, this book studies asymmetric conflicts where warring sides exhibit vast power differentials.

This article describes that although the use of the concept of energy justice is new, normative interpretations have long been part of energy policy.

A framework for prospective/ex-ante life cycle assessment (LCA) and ecological risk assessment (ERA) of emerging technologies is developed and applied to a case study of III-V/silicon photovoltaic panels.

A new study published in Archaeometry describes the unexpected results obtained from analyses of five human teeth discovered in a ritual cache at an enslaved African plantation site on the island of Saba in the Caribbean.