The objective of this project is the development of a new psychometric model, called the Generalized Squared Distance Logistic Model (GSDLM). This model is an evolution of older psychometric approaches (such as PARELLA, GHCM, and GGUM) and the Gaussian Ordination Models (GOMs) used in environmental…

Promotor: S.M. Verduyn Lunel

This dissertation investigates A'-dependencies in Standard German, Zurich German and Dutch where the dislocated constituent is indirectly, i.e. not transformationally, related to the position where it is interpreted. The analysis is carried out within the Principles & Parameters framework.

This monograph focuses on clustering of objects in high-dimensional data, given the restriction that the objects do not cluster on all the attributes, not even on a single subset of attributes, but often on different subsets of attributes in the data.

Promotor: M.T.M. Koper, Co-Promotor: L.B.F. Juurlink

Long Island, an islet of Antigua in the northern Lesser Antilles forms the major source for flint in the Lesser Antilles. A survey by Hofman, Hoogland and van Gijn in 1989 has indicated the presence of various raw material sources. Test-excavations at the major flintknapping site of Flinty Bay show…

Diede Farhosh-van Loon defended her thesis on 18 October 2016

The research presented in this thesis makes use of small molecules (as H2 , D2 and O2 ) on well-defined single crystal surfaces (flat Pt(111), flat Cu(211) and curved Pt(111)) to elucidate the role of surface structure and degrees of freedom in the reactant in specific surface reactions.

In this paper, Kantorowicz aims to track the persistent effect of former partitioning borders on property tax rates in Poland.

Promotor: Prof.dr. A. P. IJzerman, Co-Promotor: Dr. L.H. Heitman

Curved single crystals provide variable, but well-defined surface structures.

Promotor: G.P. van Wezel, Co-promotor: D. Claessen

Electrons that spin synchronously around their axis, turn out to stay superconducting across large distances within magnetic chromium dioxide. Electric current from these electrons can flip small magnets, and its superconducting version could form the basis for a hard drive without energy loss. Publication…

Hardly ever before have different groups in the population retreated into their own bubble as much as they are doing today. Professor of Sociology and Law Maartje van der Woude and her students will be examining the effect of social distancing on relationships. How do the people of Leiden look at students…

For a lot of students, the covid crisis means that a sense of community is hard to find during their studies. Lettie Dorst, university lecturer of translation studies and English linguistics, explains how she tries to create a 'community of learners’.

Promotor: A.H. Meijer, Co-promotor: B.E. Snaar-Jagalska

Lecture

This thesis discusses the discovery potential of Intensity Frontier experiments.

These three repors are part of a research project that assesses how military interventions can best prepare the ground for an effective long-term counter-terrorism policy. Three different cases have been studied, and they have each provided the input for the policy relevant recommendations that are…

Can epigenetic changes explain associations between early life stress and health outcomes?

The Executive Board of Leiden University has distanced itself from the Minister of Education, Culture and Science’s response to the Van Rijn Committee report. According to the University’s calculations, following the advice would have serious financial consequences for the entire University and would…

This PhD research aims to trace the impact of the Arab conquest, both immediate and long-term, on the material and social organization of Central Asia from 651 to 821 through an “urban change” perspective in four cities: Merv, Paikent, Balkh and Samarkand.

In December 2014, Leiden University’s Institute of Security and Global Affairs with the Australian National University’s Asia-Pacific College of Diplomacy and the International Centre for Counter-Terrorism, commenced a research project to assess how (temporary) military interventions can best prepare…

Using the principles of Industrial Ecology in Environmental Policy making in two cases: transition to a hydrogen economy and chlorinated compounds.

From 1550 onwards, a great interest in the natural world developed across Europe. This interest was not only stimulated by a growing knowledge of local flora and fauna, but also by the import of numerous exotic animal and plant species. Think, for instance, of researches and collectors like Gessner…

The lipid matrix of the skin's stratum corneum plays a key role in the barrier function, which protects the body from desiccation. The lipids that make up this matrix consist of ceramides, cholesterol, and free fatty acids, and can form two coexisting crystalline lamellar phases: the long periodicity…

A team of astronomers led by Dutch scientists have directly imaged a giant planet orbiting at a large distance around a sun-like star. Why this planet is so massive, and how it got to be there, is still a mystery. The researchers will publish their findings in the journal Astronomy & Astrophysics.

On 5 September 2019, Jennifer Doekhie defended her thesis 'Dimensions of desistance: A qualitative longitudinal analysis of different dimensions of the desistance process among long-term prisoners in the Netherlands'. The doctoral research was supervised by Prof. P. Nieuwbeerta.

For effective cancer immunotherapy by vaccination, co-delivery of tumour antigens and adjuvants to dendritic cells and subsequent activation of antigen-specific cytotoxic T cells (CTLs) is crucial. In this study, a synthetic long peptide (SLP) harbouring the model CTL epitope SIINFEKL was encapsulated…

Please have a look at the long version of our promo video

Leiden University will be 444 years old this year and is still very much alive and kicking. But how can we humans grow old healthily? Hanno Pijl at LUMC is the grand master of lifestyle medicine. He explains how we can all benefit from a sensible - but still enjoyable - lifestyle.

Knowledge and culture subproject 1:

This thesis develops a method for direction dependent calibration of the ionosphere in radio interferometric data.

The cultural sector, shut down by the corona pandemic, must urgently look for new ways to generate income.

Exhibition, Sound installation

Lecture, LACG Meetings

Lecture, Leiden Interdisciplinary Migration Seminar (LIMS)

The question of how military interventions can best transition to a long term counter-terrorism policy forms the core research question of three interlinked reports. This research project has been completed with support of NATO’s Science for Peace and Security Programme. Leiden University researchers…

Solving a scientific problem after decades: it’s a long-lasting dream for many scientists. Consequently, the research of Leiden and Eindhoven chemists gained a lot of media attention, for instance from the Belgian news website VRT Nieuws and science website Phys.org.

Long-distance Trade in Early Medieval Landscapes (ca. 6th-12th centuries)

Hester Bijl, the Rector Magnificus of Leiden University, was handed a ‘shockingly long list’ of names of missing Iranians in her office at the Administration and Central Services department on 13 December 2022.

Why is Crossnational and Cross-cultural agents such as Henrich Carloff and Willem Leyel important when studying Early Modern expansion?

On Energiepodium.nl, Rob de Wijk, Professor of International Relations and Security at the Institute of Security and Global Affairs, states that the Nord Stream 2 Project, a pipeline for Russian gas into Europe, causes a conflict between geopolitics and commerce.

This thesis explores the theoretical and observational properties of distant massive galaxies that harbour active black holes in their centres and shine brightly at radio wavelengths.

Marieke Liem wrote a contribution for DJIzien, a magazine published by the Dutch Custodial Institutions Agency (Ministry of Justice and Security), about her meetings with long-term prisoners. ‘For my research on long-term prisoners I made numerous visits to Dutch prisons. During these visits, I came…

The Leiden Certified Public Manager® Program comprises 300 hours of structured learning (blended input, applied learning and joint inquiry) and runs over twelve months and starts in Autumn 2017. Academic and practitioner faculty members organise, coordinate and teach the programme. The Leiden Certified…

Team Jumbo-Visma is going for gold at the World Championships this weekend in Salt Lake City. For this, they have worked on a new special training method. The Data Mining and Sports group of the Leiden Institute of Advanced Computer Science (LIACS) was involved in the development of this method.

Triple-negative breast cancer (TNBC) constitutes a small subtype (~15%) of breast cancer, but causes the majority of breast cancer-related deaths.

Psychologist Bramesada Prasastyoga discovered that small business owners who engaged in entrepreneurship mostly for the pursuit of rewards and opportunities tended to be more willing to grow their businesses than those who engaged in entrepreneurship mostly due to the need for security and necessity,…

Leiden University has participated in an international study carried out by the CARMENES consortium, which has discovered two small, terrestrial planets around Teegarden’s Star. The planets have masses similar to Earth and their temperatures could be mild enough to sustain liquid water on their surf…