Galaxies in the local Universe fall into two main categories of spirals and ellipticals. In this Thesis, we explore the structural evolution of galaxies into this bimodal distribution.

Fascism tends to be relegated to a dark chapter of European history, but what if new forms of fascism are currently returning to the forefront of the political scene?

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.

The research in this thesis is focused on tomographic reconstruction based on two imaging modalities in electron microscopy.

Understanding how galaxies form, interact, and evolve comes largely from comparing theory predictions with observational data. Numerical simulations of galaxies provide the most accurate approach to testing the theory, as they follow the non-linear evolution of gas and dark matter in great detail and…

Promotor: A. Achúcarro, Co-promotor: A. Boyarsky

This is a yearly event where we move in one week from the physics of light through the composition of the microscope, fluorescence microscopy and end up with some image analysis All the lectures are backed by practicals to really put your obtained knowledge into practice

This dissertation derives from the development of tools for algorithmic composition which extract pitch materials from sound signals, analyzing them according to their timbral and harmonic properties, putting them into motion through diverse rhythmic and textural procedures.

The main goal of the research described in this thesis was the development of new photoactivated chemotherapy (PACT) ruthenium(II) complexes bearing a non-toxic photolabile ligand.

In this Ph.D. thesis, we characterized two novel upstream regulators of JUB1, HB40, and HB22, in Arabidopsis thaliana. In Chapter 2, we described functions of HB40 in modulating growth and development via the regulation of JUB1 and GA inactivation genes GA2OXs.

On the largest scale, the Universe resembles a cosmic spiderweb. Most galaxies coexist in small groups within the threads of this web. At the nodes of the threads are enormous groups of galaxies forming the largest structures in the universe still held together by gravity: clusters of galaxies.

Three major cosmology-focused missions are planned for the next decade: the Euclid space telescope, the Vera C. Rubin Observatory in Chile, and the Nancy Grace Roman Space Telescope.

Dwarf satellite galaxies in the Milky Way perform different dances than researchers initially expected. Marius Cautun from Durham University received a Marie Curie grant to unravel the mysteries of this orbital dance. October 1st 2018 he will start his research at the Leiden Observatory.

The Leiden Computational Network Science Lab (CNS Lab) researches methods for knowledge discovery from real-world network data.

The central aim is to systematically study differences in crime patterns and social control between migrants and non-migrants in early modern Frankfurt am Main.

This article explores levels and patterns of legitimacy beliefs with respect to multistakeholder global governance at ICANN. From a large and systematic evidence base, Jongen & Scholte have found that ICANN has strong legitimacy underpinnings among its staff and board, as well as quite uniformly moderate-to-high…

In this thesis, we extend the concept of null models as canonical ensembles of multi-graphs with given constraints and present new metrics able to characterize real-world layered systems based on their correlation patterns.

Do general practitioners recognize children with or at risk of problematic anxiety and is there a pattern that might help differentiate those with and without anxiety disorders in general practice?

The main objectives of this project are to measure and explain government-opposition distinctiveness and to study its consequences for democratic legitimacy and vote choice.

Yi-Wen Cheng defended her thesis on 28 May 2015

With the rise of information and communication technologies, large amounts of data are being generated and stored in databases. In order to get a better grip on these large amounts of data, serious efforts are being made to discover patterns and relations in the data with the help of new techniques.…

This projects investigates spatial relations between soils and other resources and the urban layout of a classic Maya center in Campeche, Mexico.

There is an urgent need for more physiologically relevant cell culture methods to guide compound selection in pre-clinical stages of the drug development pipeline.

The Routledge Handbook of Contemporary Vietnam is a comprehensive resource exploring social, political, economic, and cultural aspects of Vietnam, one of contemporary Asia’s most dynamic but least understood countries.

Antibiotics are a class of medicine most people take for granted. But pathogenic bacteria are becoming more and more resistant to our antibiotics, and this poses a great challenge for future treatments. There is thus a great societal need to identify new molecules that can address new targets and be…

This book rovides an economic history of Portugal over the course of eight centuries, from 1143 through to 2010 and situates Portugal's economic growth within the context of European development. It also responds to fundamental questions about when, how and why the economy expanded, stagnated or co…

On the 27th of February, Marta Morgado successfully defended a doctoral thesis. The Leiden University Centre for Linguistics congratulates Marta on this achievement!

On the 28th of September, Jiang Wu successfully defended a doctoral thesis. The Leiden University Centre for Linguistics congratulates Jiang on this achievement!

The Oxford Handbook of Dutch Politics provides a comprehensive longitudinal overview of the state of the art of academic research on the Dutch political system: its origins and historical development, its key institutions, main fault lines, pivotal processes, and key public policy dynamics. In each…

Which brain cell does what, when Parkinson's disease arises? It won't be long before this jigsaw is solved piece by piece. Ahmed Mahfouz, computational biologist, combines bio-knowledge from Leiden with algorithms from Delft and is getting closer to finding the key.

Knowledge and culture subproject 4:

The Collective Experience of Empathic Data Systems (CEEDs) consortium developed novel integrated technologies that support experiencing, analysing and understanding of very large datasets.

By documenting lexical and morpho-syntactic patterns among P’urhepecha speakers in Mexico and the US diaspora, this project will investigate the sources of language variation. The ensuing online dialect atlas will serve as an online resource for speakers, learners and researchers of the language.

Although it is often assumed that the stereochemistry in Ugi multicomponent reactions is determined in the final Mumm rearrangement step, experimental and computational evidence that Ugi reactions on hydroxylated pyrrolines proceed under kinetic control is reported.

The imaging group focuses on bio-imaging, image analysis and visualization.

Collecting data in sports increased in importance the last few years.

The specific interest of this project is to explore the links between international financial levers and higher education, research and innovation systems in the Sahelian region.

Scientific research on Colonialism and Slavery is done from different research programmes and different disciplines.

-

This project aims to develop advanced data analysis methods for monitoring and increasing our understanding on biodiversity dynamics in nature reserves such as the Oostvaardersplassen.

Promotor: E. Bouwman, Co-promotor: S. Bonnet

In films kunnen de meest wonderlijke acties plaatsvinden. Maar zijn die acties in de 'echte' wereld ook mogelijk? En in hoeverre houden filmmakers ons voor de gek? Tijdens het Leiden International Film Festival komen film en wetenschap samen.

How can you use robots and automatic recognition of microscopic images to test the effect of drugs exceptionally quickly?

The Archaeology and Epigraphy of Jordan’s North-Eastern Desert and Beyond

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.

A measured yet theoretically innovative exploration of how Islamophobia and radicalisation intersect and reinforce each other.

One of the key limitations of the direct imaging of exoplanets at small angular separations are quasi-static speckles that originate from evolving non-common path aberrations (NCPA) to which the primary adaptive optics system is inherently blind. The main focus of this thesis is the development and…

During the bachelor’s programme Astronomy you will immerse yourself in questions about our universe. Questions such as: ‘what happens in a black hole?’ and ‘what is dark matter?’ In doing so you will learn to apply mathematics and physics to astronomical problems and you will work with computer simulations…

The ultimate goal of cosmologists is to find a cosmological model able to explain the current observational data.