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.

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

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…

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.

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.

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?

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…

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…

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

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.

In this PhD-thesis several new and existing data science application are described that are particularly focused on applications for tax administrations.

This dissertation explores how Large Language Models (LLMs) can effectively and responsibly contribute to complex decision-making processes. By combining AI and human intelligence, Hybrid Intelligence (HI) emerges, allowing the strengths of both humans and machines to be utilized.

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.

Humans can see the world through the eyes of other humans and imagine what they know, want, and intend. This competence is known as Theory of Mind.

Classical statistical methods, such as p-values, are difficult for researchers to apply correctly. They for example do not allow drawing conclusions from a study early, or for extending a study with extra research groups that want to make their data available later.

Carbonaceous asteroids preserve a record of early solar system processes, where minerals and organic molecules, like polycyclic aromatic hydrocarbons (PAHs), offer clues to planetary evolution and prebiotic chemistry.

Continuous optimization is never easy: the exact solution is always a luxury demand and the theory of it is not always analytical and elegant.

Human language is constantly evolving with its linguistic structure being shaped by language users at both individual and population levels. Focusing on the interplay between processes of language acquisition and communicative need in shaping human languages, this thesis introduces a novel computational…

Promotor: Prof.dr. E. F. van Dishoeck, Co-promotor: A. N. Heays

Evidence-informed policy-making is crucial for good governance. Yet, despite the abundance of evidence from research and evaluation available to decision-makers, we know little about the actual influence of evidence on government policies. The ‘Power of Evidence’ (PoE) research programme, directed by…

This thesis focuses on addressing four research problems in designing embedded streaming systems.

Recently, Prime Minister Dirk Schoof caused quite the stir in the political arena of The Hague following the release of policy documents on the asylum debate. This came ahead of a decision that had not yet been made. The question has since arisen as to whether it’s still possible for civil servants…

Overlevingsanalyse is een onderzoeksgebied dat zich richt op het bestuderen van de tijd tot het optreden van een specifieke uitkomst.

Promotor: Prof.dr. W.Th.F. den Hollander, Co-promotor: R. Fernandez