The research programme Probability Theory focuses on probability theory and on operations research.

With the aid of the General History of Africa (GHA) series of books, PhD candidate Larissa Schulte Nordholt researched what it meant to decolonise the history of Africa. This proved to be a tricky process, which was hampered by politics and lack of funding. PhD defence on 1 December.

Large areas of space are filled by molecular clouds that consist of gas and dust grains that are the remnants of dead stars. When these clouds start collapsing, the decreasing temperature and increasing density cause gas particles to start accreting onto dust grain surfaces.

Promotor: Prof. dr. I. Snellen, Co-Promotor: Dr. M. Kenworthy

At the Leiden Curious Minds Centre, our research focuses on the relationship of exploratory behaviour and discovery learning to curiosity and the way children regulate their behaviour and emotions. We want to improve our understanding of how children can and do become more and more the captain of their…

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Promotor: H.V.J. Linnartz

Promotor: Prof.dr. H.L.V. Linnartz

Research shows that including administrative fines in the screening process for a Certificate of Conduct (in Dutch: VOG) is not currently feasible.

Op 22 februari leidt Karst Schuil (Wenen) het derde seminar (online) van de seminarreeks van de Onderzoekschool Mediëvistiek: Emotionality and Late Medieval Self-Transformative Processes. Hij onderzoekt de relatie tussen pelgrimages en emoties en zal zijn prospectus (een uitgewerkt voorstel) van zijn…

Last week, the Dutch Council of Ministers adopted the decision to modernise the process of prosecuting politicians. This action was taken following the Russian bribery scandal involving Dutch politicians. Wim Voermans, Professor of Constitutional Law, discusses this in Dutch daily newspaper ‘NRC’.

The enlargement of the EU to include ten East and Central European countries went smoothly. But further expansion is meeting resistance and Poland and Hungary are now abandoning a number of democratic principles. What are the reasons? Antoaneta Dimitrova, Professor of Comparative Governance, explains…

Vinasse is a major by-product generated by the sugarcane biofuel industry. It is a source of microbes, nutrients and organic matter and often it is recycled as fertilizer.

The principal aim of this research is to explore the confrontation between voice and electronics. These are often seen as being radically different from one another and many characteristics seem to be in opposition between them. However, they also have characteristics in common and they can influence…

Promotor: W.Th.F. den Hollander Co-Promotor: F.M. Spieksma

On 3 October, Leiden University joined in big style with the annual celebration of The Relief of Leiden. Over 130 professors, staff members, students and children took part in the traditional Grand Parade through the centre of Leiden.

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.

Before the large scale use of renewable energy sources can be implemented in our society, the storage of electrical energy needs to be tackled. Storage the energy as hydrogen via the reduction of protons is a good option.

Fungi germinating in the lungs of patients. Doesn’t sound too nice, does it? Luckily, humans can deal with this normally, and we are able to clear the infection before anything comes to harm. However, in people with health issues, Aspergillosis can cause a lot of damage, especially if the fungus becomes…

Successful innovation requires more than technological progress alone. Every new concept must first be firmly anchored into an existing context. At least this is the hypothesis of Dutch classicists, working together in the National Research School in Classical Studies OIKOS. They intend to test this…

Understanding individual differences in self-regulation in boys with ODD/CD on the level of brain, cognition and behavior

Stochastic resetting is simple enough to be approached analytically, yet modifies stochastic processes in a non-trivial way.

Promotor: H.J. van den Herik, B.R. Katzy, Co-promotor: K. Sailer

It’s not a regular occurrence at Leiden University: two professors giving their inaugural lecture on the same day. Berna Güroğlu and Ellen de Bruijn specialise in related disciplines: they both research the influence of social context on processes in the brain – Güroğlu in adolescents and De Bruijn…

Hari Nugroho explores the role of local dynamics in shaping Indonesian labour movements. By focusing on the micro-level, this research reveals how labour organisation strategies are influenced by individual actors' personal histories, their interactions, and the way in which they respond the local economic…

Promotor: Promotor: W.Th.F. den Hollander, Co-promotor: V. Sidoravicius.

How are you doing in these strange and unprecedented times? This is the question we are asking our colleagues in this series of articles. This time we asked Erick van Zuylen, the University beadle. 'This year, I haven't been leading the PhD committee into and out of the chamber, wielding my beadle's…

The Faculty of Archaeology's own home-grown journal Inter-Section has released a new volume. Inter-Section offers students and PhD candidates the unique chance to publish in a peer-reviewed journal. The new volume focuses on the materials that shape our world.

Practical advice, a panel discussion, and an informal networking reception: students and alumni from the MA International Relations can look back on yet another successful event last April. The diverse backgrounds and careers of the alumni vividly illustrated the range of opportunities awaiting students…

How can we improve quality of life and study success in young, high-functioning adults with autism?

In this thesis, we use low-frequency and high-frequency radio observations to address the following questions regarding quasars: is the radio loud/quiet quasar dichotomy real?

Promotores: Prof.dr. B.R. Katzy, Prof.dr. K. Sailer (Munich University)

This thesis investigates how quantum, quantum-inspired, and hybrid quantum-classical computation can enhance key points of the automated machine learning (AutoML) pipeline under the constraints of noisy intermediate-scale quantum (NISQ) devices.

This thesis investigates opinion dynamics on random graphs through the lens of the voter model, a classical interacting particle system used to describe how consensus emerges in networks.

The Belgian elections are over. Now it is up to the formateur to form a cabinet, but that is difficult. Fauke Deceuninck, program leader of Politics and Governance at the Center for Professional Learning, explains to Speechmakers why that is.

'Psychologists think I’m a linguist but linguists think I’m a psychologist,' says cognitive neuroscientist Xiaochen Zheng. With the Veni grant she will be able to bring these two fields of research closer together. Read her answers to five questions.

Populist opposition parties are less likely to engage in policy-making behaviour (participating in or directly influencing legislative production) and somewhat more likely to engage in scrutiny behaviour (monitoring and criticising government actions).

This thesis takes steps toward understanding the interaction between gas-phase and solid-state molecules in star- and planet-forming regions.

Research Director Judy Veldhuijzen, who started her new role this month, answers questions from colleagues. What is her vision for the institute? How does she view open leadership? And: how healthy is the GMN researcher herself?

Promotor: S.M. Verduyn Lunel, Co-promotor: O.W. van Gaans

Promotor: F.H.J. Redig, Co-Promotor: W.T.F. den Hollander

What should a confederal constitution for the EAC look like? What are the legal challenges for making the African Free Trade Area (AfCFTA) work? And what insights can be drawn in this context from the successes and failures in the EU?

In this dissertation non-parametric Bayesian methods are used in the application of robotic vision.

Over 2,700 cars on the Fremantle Highway that caught fire on 26 July have been so badly damaged that they cannot be sold. Can we recycle these cars?

Almost 100 billion tons of CO₂ could be pulled out of the atmosphere by the end of the century. That is, if high-income countries switch to a plant-based diet. The double carbon profit of returning farmland to its natural state would equal about 14 years’ worth of agricultural emissions, researchers…

A splendid milestone after seven years of collaborative research on the sustainable development of the Indonesian economy. Professor of Industrial Ecology Arnold Tukker has been appointed as a guest professor at the Faculty of Economics and Business of Universitas Padjadjaran (UNPAD) in the Indonesian…

Bioenergy with carbon capture and storage (BECCS) is a promising method for removing carbon dioxide (CO2) from the atmosphere and simultaneously generating energy. Yet this method is controversial, as it may require a great deal of land and water. Researchers at Leiden University have now proposed a…

Healthcare Information Systems (HIS) are essential for modern healthcare delivery, yet their development faces significant challenges including heterogeneous data formats, regulatory compliance, and the growing demand for AI-driven decision support.