Radiography is an important technique to inspect objects, with applications in airports and hospitals. X-ray imaging is also essential in industry, for instance in food safety checks for the presence of foreign objects.

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The European Registry of Exonerations database provides an overview of miscarriages of justice in Europe with a view to preventing future errors.

Somatic symptoms, such as pain, itch, and fatigue have been shown to have a bidirectional relationship with mental symptoms. Although acute somatic symptoms serve some adaptive properties, chronic symptoms can instead lead to interference in daily activities and lower quality of life.

In this thesis, we aim to shed light on the diverse and often opposing roles of integrin α3β1 in cancer.

In this article Wouter Jong and Andrea Bartolucci explore the integration of scenario-based learning (SBL) into a crisis communication course to enhance students' practical skills and reflection in real-world contexts.

This book is the first comparative study of estimative intelligence and strategic surprise in a European context, complementing and testing insights from previous studies centred on the United States. It does extensive empirical analysis of open-source material and interviews in relation to three cases…

This article reflects on the lessons of COVID-19 five years on. The crisis exposed deep vulnerabilities in health systems, governance, and social cohesion.

This dissertation aims to establish a dialogue between ethnomusicology (more specifically indigenous organology), the anthropology of art and the culture of the Apinaye peoples, in order to understand how the musical objects of these peoples are learned and taught, and thus to understand its musical…

Drawing is one of the most unique human behaviours. Like language, drawing is a mode of communication and a cognitive tool that from an early age allows us to interact with others. Is the early development of drawing skill influenced by the social environment? If so, how?

This thesis addresses questions on effectively using variational quantum circuits for machine learning tasks.

At Leiden Observatory, researchers investigate the origin of stars and their planetary systems. They detect and characterize planets around other stars, which are called exo-planets. They study how stars and planets form. And they follow molecules from interstellar clouds to nascent planet systems.…

Researchers at Leiden Observatory study the fundamental physics that creates structure in the Universe. These processes collect matter into galaxies and gas into stars. With the use of powerful telescopes and advanced calculations and computer simulations, Leiden astronomers seek to understand the origin,…

Methodology and Statistics focuses on the development, evaluation and application of statistical models for the analysis of psychological research data.

North, Middle and South America together constitute the single largest area in World Archaeology that is taught as a single focus. It is also the only major world area that saw societies develop from hunter-gatherers to early empires entirely independent from developments in Eurasia & Africa. It is,…

Within the two-year Astronomy master’s programme, you can choose from seven specialisations, ranging from fundamental or applied astronomy research in cosmology, instrumentation or data science, to combinations of astronomy research with education, management or science communication.

Learning with the City, a partnership between the Municipality of Leiden, Leiden University and University of Applied Sciences Leiden, has a new online platform. Learning with the City aims to use knowledge and expertise from higher education to solve social issues in Leiden. The platform will help…

A study in the Behavioral Biology group of Carel ten Cate at the IBL showed that experience-dependent and -independent preferences influence song learning in zebra finches.

An international collaboration, including Leiden physicist and computer scientist Vedran Dunjko, showed that quantum technology can speed-up the learning process of artificial intelligence (AI). To prove this, the physicists and computer scientists used a quantum processor for single photons. Their…

An international collaboration, including Leiden physicist and computer scientist Vedran Dunjko, showed that quantum technology can speed-up the learning process of artificial intelligence (AI). To prove this, the physicists and computer scientists used a quantum processor for single photons. Their…

This thesis probes under what conditions quantum computing presents an advantage over classical computing.

The brains of adolescents react more strongly to receiving rewards. This can lead to risky behaviour, but research in Leiden has shown that it also has a positive purpose: it makes learning easier. The publication of an article on the research findings led to a lot of media attention.

Artificial intelligence systems are smart. They can recognize patterns better than humans, for example. Yet humans are still very much needed. How can you better steer those AI systems? LIACS lecturer Jan van Rijn wrote a book about this together with a number of colleagues. We asked him a few quest…

The programme focuses on the medieval dynamics of intellectual life in the Rhineland and the Low countries, nowadays divided over five countries (Switzerland, France, Germany, Belgium and the Netherlands) but one cultural region in the later Middle Ages.

Undesirable associations with sex can be unlearned, but return if the circumstances change. They must therefore be unlearned in different situations. The drug D-cycloserine may help here. These are the findings of psychologist Mirte Brom.

Children could do better at school if they exercise during their maths, English and science lessons, a study has suggested. Researchers reviewed 42 studies that looked at the benefits of physical activity in the classroom for youngsters.

Tremendous amounts of data are generated in scientific research each day. Most of this data has more potential than we are using now, says Katy Wolstencroft, assistant professor in bioinformatics and computer science. We just need to integrate and manage it better.

To properly understand how babies absorb a language we need to study the process from a number of different perspectives, linguist Claartje Levelt argues. She accepts her appointment as Professor of Language Acquisition on 27 March with an inaugural lecture entitled ‘Language in its infancy’.

How does a farmer decide if his cow is a prize winner? An anthropologist studying these farmers should not only look at the farmers themselves, but should in particular learn how they see the world. This is what Cristina Grasseni, the new Professor of Anthropology contends. Inaugural address on 30 O…

Novel entities may pose risks to humans and the environment. The small particle size and relatively large surface area of micro- and nanoparticles (MNPs) make them capable of adsorbing other novel entities, leading to the formation of aggregated contamination.

Engaged, active students who can see the links within their discipline. These are key aims of the University vision on teaching and learning, but how do you achieve them? An interdisciplinary research team led by ICLON has developed an inventive method that helps lecturers do just that.

This dissertation is concerned with the development of grammar. Starting from a usage-based perspective, which holds that children use domain-general learning mechanisms to acquire the grammatical patterns of their mother tongue, Beekhuizen shows how to operationalize various concepts from this tradition…

To what extent do aspects of fluency fluctuate throughout time? And how do raters take the dynamicity of fluency into account when rating performances?

In this thesis we explore machine and deep learning approaches that address keychallenges in high dimensional problem areas and also in improving accuracy in wellknown problems. In high dimensional contexts, we have focused on computational fluid dynamics (CFD) simulations.

Leiden University and VU Amsterdam are developing a joint research project for a digital platform on which you can compose and share storylines with the use of images. Such interactivity will make a boring high school history lesson much more exciting and personalized. Furthermore, it will stimulate…