The thesis is part of a bigger project, the HEPGAME (High Energy Physics Game). The main objective for HEPGAME is the utilization of AI solutions, particularly by using MCTS for simplification of HEP calculations.

In deep reinforcement learning, searching and learning techniques are two important components. They can be used independently and in combination to deal with different problems in AI, and have achieved impressive results in game playing and robotics. These results have inspired research into artificial…

PhD defence

Our world is shrinking, or at least our electronic devices are. From PCs to mobile phones: everything is smaller and thinner. The smaller the chip, the better it can conduct electricity and pass on information.

The main focus of this thesis is the behaviour of two-dimensional materials, namely (anti)-ferromagnetic materials in the first two chapters, which show topological phases, and energetic square ice in the third and fourth chapter.

Promotor: Prof.dr. H.V.J. Linnartz, Co-Promotores: H.M. Cuppen, S. Ioppolo

In this thesis we study bistable reaction-diffusion equations on lattice domains.

Promotores: H. Schiessel, G.T. Barkema

Promotor: J.N. Kok, Co-promotor: M.S. Lew

In meta-analysis, heterogeneity often exists between studies. In such cases, it is essential to investigate the sources of heterogeneity and understand the relationship between effect size and study characteristics (i.e., moderators).

Heritage Quest citizen scientists conduct research in two ways: online and in the field. Online, from their own home, they inspect elevation maps for traces of archaeological heritage.

At the VIth Monte Albán Round Table conference (July 2011) in Oaxaca, Mexico, Maarten Jansen (Leiden University) together with Mexican archaeologists Dante García and Iván Rivera (both from the Instituto Nacional de Antropología e Historia) discussed the topography and toponyms of the archaeological…

Promotor: Prof.dr. G.R. de Snoo

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

The genetic information of all living organisms is contained in their DNA. Cells modify the degree of DNA compaction by epigenetics, which largely determines what genes are read out and which genes are transcriptionally silent.

Beenakker

Making predictions about emotional problems or the effects of air pollution: Marjolein Fokkema’s algorithms are getting better at this all the time. She is making her algorithms increasingly flexible, so they can predict not just characteristics at one particular moment, but also how skills, for example,…

Promotors: Prof.dr. T.H.W. Bäck, Prof.dr. B. Sendhoff (Technische Universität Darmstadt)

Towards a framework that integrates content-based and process-based accounts of mathematical thinking

Promotor: Prof.dr. M. de Jong, Co-Promotor: Dr. A.J. Heijboer

Promotores: B. van de Water; P. Hogendoorn; J. Bovée Co-Promotor: E.H.J. Danen

This project investigates ancient water management of streams, springs and runoffs on the archaeological site of Monte Albán, Mexico, as a means to contribute with different stakeholders in the development of sustainable solutions to water problems today such as floods and scarcity.

National and international actors have attempted to provide accountability for the events at Srebrenica in July 1995. This research project aims to draw lessons learned from those multiple efforts in assessing whether securing a measure of ‘justice’ for the victims has been successful and how national…

This book investigates how the rulers of the Habsburg world empire developed and implemented a central maritime policy for the Netherlands and appointed an admiral of the sea or admiral-general for that purpose.

Are there other planets like the earth, and will there also be life? Astronomers study planets around stars other than the sun, with the aim to find out what kind of gasses their atmospheres are made up with.

LUMC researchers are looking for factors that point to illness at an early stage.

LUMC researchers are looking for factors that point to illness at an early stage.

Is there extra-terrestrial life out there? It now looks as though we can sketch out an answer to this enduring question. Leiden Observatory is helping to build new instruments to find the most promising exoplanets.

The particle accelerator of CERN, the European Organization for Nuclear Research, produces large amounts of complex data with high accuracy, as a result of which theoretical predictions also need to be more accurate and faster. With his research team, PhD candidate Ben Ruijl developed very innovative…

Ambient sound is a standard term used by sound practitioners to denote the site-specific background sound component that provides a characteristic atmosphere and spatial information in a sound work.

Leiden physicist Carlo Beenakker has received an honorary doctorate from the Bogoliubov Institute for theoretical physics in Kiev.

In order to test theoretical expectations concerning individual decision-makers' search in response to negative performance, Joris van der Voet conceptually disentangles problem-defining and solution-generation as two distinct search objectives.

Apps that can precisely identify shards, coins or heel bones: archaeology has embraced artificial intelligence. Alex Brandsen is working on a search engine that scans vast quantities of text from an archaeological viewpoint.

Work officially started on Schilperoortpark at the Leiden Bio Science Park on Wednesday 6 March. Town councillor Paul Dirkse and Vice-Chancellor of the Executive Board of the University Martijn Ridderbos planted the first tree together with Cas Schilperoort, grandson of Professor Rob Schilperoort, the…

There is a linguistic hypothesis that states that all languages from Europe to India originate from a single mother language: Proto-Indo-European. This language is thought to have been spoken thousands of years ago. Researcher Alwin Kloekhorst plans to use linguistic genealogy to study the very first…