Reinforcement learning is a framework that enables agents to learn in a manner similar to humans, i.e. through trial and error. Ideally, we would like to train a generalist agent capable of performing multiple tasks and achieving various goals.

Het volgende rapport bespreekt onze enquête over de UN Sustainable Development Goals die werd verspreid onder onderzoekers aan de Universiteit Leiden in november 2021.

Met de recente opkomst en val van IS uiten academici en beleidsmakers over de hele wereld hun bezorgdheid over het lot van kinderen van voormalige buitenlandse strijders. Zullen zij in de voetsporen van hun ouders treden? In dit artikel belichten Layla van Wieringen, Daan Weggemans en Marieke Liem de…

This thesis presents pioneering work on the panchromatic emission of some of the most luminous galaxies in the early Universe: star forming galaxies and active galactic nuclei.

Op 12 mei 2020 verdedigde Darryl Robinson zijn proefschrift 'Exploring Justice in Extreme Cases: Criminal Law Theory and International Criminal Law'. Het promotieonderzoek is begeleid door promotor prof.dr. C. Stahn.

Het veelgebruikte bestrijdingsmiddel thiacloprid kan zorgen voor een grootschalige afname in zoetwaterinsecten. Dat ontdekten de onderzoekers van het Levend Lab in Leiden. Drie maanden lang telden zij hiervoor de uitvliegende insecten in de 36 slootjes van het lab. Hun onderzoek is nu te lezen in PN…

Fysisch chemicus Rik Mom ontwikkelde een revolutionaire manier om katalysatoren in actie tot in detail te onderzoeken. Voor zijn werk kreeg hij tijdens zijn verdediging op 29 juni de onderscheiding cum laude.

Joseph Callingham van de Leidse Sterrewacht ontvangt de Louise Webster Prijs voor uitmuntend post-doc onderzoek. Calligham krijgt de prijs van de Astronomical Society of Australia voor zijn geslaagde zoektocht naar het meest extreme object in het heelal.

Indonesia is experiencing various environmental challenges related to its fast economic growth. Therefore, it is necessary to have measurable and applicable indicators to obtain accurate data and information regarding the costs of adverse environmental impacts arising from economic activities to support…

Supply risks are not new. But the aggravation of power conflicts on the international stage coupled with global shifts towards energy transition and digitalization has triggered the next supply risk research era.

Promotor: P.M. Brakefield

This thesis studied in depth the energy use and CO2 emissions of the industrial sector in China.

De Sustainable Development Goals en curriculumontwerp

Inaugurale rede

The following report discusses a survey on the topic of the Sustainable Development Goals that was distributed among researchers at Leiden University in the month of November 2021.

The LUGO Press is a student publication forum, rooted in academia and journalistic practices and published by the Leiden University Green Office.

Explore "Using R for Data Analysis" at Boerhaave Nascholing. Learn about the R language and build statistical reports. Dive into data analysis! Read more here.

Explore "Using R for Data Analysis" at Boerhaave Nascholing. Learn about the R language and build statistical reports. Dive into data analysis! Read more here.

During post-embryonic development into adults, animals face an environment that fluctuates constantly. For example, in nutrient availability, temperature, and osmolarity (e.g., salt concentration).

How are new drugs developed? This question is central to the Minor Modern Drug Discovery (MDD), which covers the entire trajectory from disease to drug molecule and vice versa. The various research groups involved offer a complementary and interdisciplinary perspective by connecting the diverse subjects…

In this dissertation (titled: Exploring the Synergies between Transfer in Reinforcement Learning and Procedural Content Generation) we explore how the two research fields named in the title, namely Transfer in Reinforcement Learning (TRL) and Procedural Content Generation (PCG) can synergize togethe…

Promotores: Prof.dr. F.P. Israel, Prof.dr. P.P. van der Werf

From Incident to Precedent

Food security is challenged by a growing global population and by climate change. Drought and soil salinity are considered the most important ones that inhibit crop yield and distribution. Worryingly, climate change is predicted to increase not only their frequency and severity, but also their co-occurrence,…

Promotor: F. Arbab, R. De Nicola, Co-Promotor: M. Tribastone

The use of increasingly large and diverse datasets to guide urban climate action has implications for how, and by whom, local governments are held accountable.

The challenge of achieving fast quantification in metabolomics is the presence of severe matrix effects during the MS analysis of complex samples.

Quantum computers are a proposed fundamentally new type of computer. They aim to perform some computations much faster than previously possible by exploiting phenomena at the quantum scale, called superposition and entanglement.

The main goal of this thesis is to achieve advanced control of binding properties in bis-pyrrolic and macrocyclic pyrrolic receptors by light.

Promotor: Prof.dr. A.G.G.M. Tielens, Prof.dr. C. Dominik (UvA)

The focus of this thesis is on the technical methods which help promote the movement towards Trustworthy AI, specifically within the Inspectorate of the Netherlands.

This multidisciplinary minor provides students with knowledge on how and why humans became the way they are. The minor focuses on the evolution of the species Homo sapiens from other hominin lineages and animal ancestors, and on the various factors shaping this process. Not only is human evolution of…

Seagrass is a marine flowering plant with special adaptations to coastal and marine environments, playing a crucial role in providing a wide range of ecosystem services.

Promotie

Bacteria are highly complex and diverse organisms that have adapted to survive in ecological niches ranging from the most extreme to the most heterogeneous environments.

In dit onderzoek worden orde isomorfismen en orde antimorfisme bestudeerd in het algemene kader van partieel geordende vector ruimten.

When a star is born in our Galaxy, it is quite likely that it has formed within a massive cluster, which hosts numerous high-mass stars bathing their lower mass neighbours in UV radiation.

This thesis is largely an experimental study on the formation of solid-state simple and complex organic molecules in the H2O-rich and CO-rich ice phases of dense interstellar clouds and dark cores.

This thesis describes the implementation and on-sky demonstration of high-resolution integral-field spectroscopy for extreme adaptive optics systems that are used to find and characterize exoplanets.

Dit programma is speciaal ontwikkeld om je te helpen met:

Steden, Voedsel, Water, Biodiversiteit, Bronnen en Energie: dit zijn de belangrijkste onderzoeksthema’s voor het CML. Ons doel is altijd om wereldwijd voorop te lopen in ons vakgebied. En echte impact te hebben met onze onderzoeksprogramma’s.

Handen uit de mouwen voor duurzaamheid! Dat doen medewerkers en studenten op verschillende manieren, thuis en op de universiteit.

Ons onderzoek kent een stevige disciplinaire basis binnen een breed scala van wetenschapsgebieden.

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.

Promotor: T.H. Oosterkamp

The expanding population and economic activity are driving up global energy consumption. Simultaneously, there is an urgent need to transition from fossil fuels to renewable sources to mitigate the climate crisis, primarily caused by fossil fuel combustion.