Promotor: E. Gittenberger, Co-promotores: L.P. van Ofwegen; B.W. Hoeksema

It is a common technique in global optimization with expensive black-box functions to learn a surrogate-model of the response function from past evaluations and use it to decide on the location of future evaluations.

Cynthia van Vonno, politicoloog aan de Universiteit Leiden, verklaart in haar proefschrift waarom individuele parlementariers meestemmen met hun fractie.

Balsaminaceae is a diverse plant family characterized by a huge floral morphological diversity.

Promotores: Prof.dr. A.G.G.M. Tielens, Prof.dr. L.B.F.M. Waters (UvA), Prof.dr. C. Dominik (UvA)

The soil-dwelling, filamentous bacteria of the genus Streptomyces are renowned for their production of useful secondary metabolites including antibiotics. The work described in this thesis provides new insights on the role and regulation of antibiotic production and resistance in these bacteria.

Promotor: S.M. Verduyn Lunel, Co-promotor: O. van Gaans

Promotor: Prof.dr. E Gittenberger, Co-Promotores: C.H.J.M. Fransen, B.W. Hoeksema

Sustainable energy from wind and solar is most readily available near the sea.

Promotores: Prof.dr. M. Franx, Prof.dr. P.G. van Dokkum (Yale University)

Promotor: Prof.dr. M. Schilthuizen

Promotor: Prof.dr. H.J.A. Rottgering

The growing demand of energy indicates that global energy resources in the form of fossil fuels will not be sufficient in the future. In order to solve potential future energy problems development of a sustainable hydrogen economy is highly desirable.

Promotor: S.M. Verduyn Lunel, Co-promotor: O.W. van Gaans

To gain more insight into the evolutionary development of orchid flowers and fruits, the orchid species Erycina pusilla was studied. The evolutionary origin of the median petaloid sepal, the callus on the labellum, and the stelidia was studied.

Promotor: H.J.A. Rottgering, Co-Promotor: R.J. van Weeren

This thesis investigates the structural evolution and assembly of galaxies since the first few billions years after the big bang.

Planets are formed in disks of gas and dust around young stars.

Pulsars were first discovered in 1967 and since then the population has grown and expanded over several wavelengths.

Plants produce an astonishing variety of secondary metabolites (SMs) which are thought to play vital roles in the fitness of plants through ecological interactions.

Promotor: Prof.dr. E.F. Smets

Promotores: Prof.dr. P.M. Brakefield, Prof.dr. B.J. Zwaan (Wageningen Universiteit)

Promotor: Prof.dr. P.G.L Klinkhamer, Co-promotor: K. Vrieling

The logic seems inescapable indeed. The bigger the population, the higher the probability it contains an Einstein. Hence, bigger populations are more likely to develop complex culture.

Promotor: M.T.M. Koper, Co-promotor: L. Juurlink

Vier Leidse groene onderzoeksinstituten slaan de handen ineen om onderzoek in evolutie en biodiversiteit te integreren, op Leids én op nationaal niveau. Spil in deze samenwerking is Frederic Lens.

Promotor: Prof.dr. M.T.M. Koper, Co-Promotor: F. Calle-Vallejo

Evolutie is elke dag om je heen. Dat is de boodschap van de nieuwe Massive Open Online Course (MOOC) van de Universiteit Leiden en Naturalis die 19 september van start gaat.

Galaxies are environments where gas coalesces, cools, and is converted into stars. However, it remains unclear the exact mechanisms through which galaxies acquire, redistribute and lose their gas.

Promotores: Prof.dr. J. Schaye & Prof.dr. C. Steidel (California Institute of Technology)

Promotor: Prof.dr. E.F. Smets, Co-Promotor: L.W. Chatrou

My PhD project studies how the temporally sequential Hox gene expression is regulated during head-tail patterning of the frog embryo.

This dissertation studies the Asymptotics of Bayesian nonparametric inference for Gaussian linear models.

In this dissertation iron-based homogeneous catalysts were synthesized, characterized and investigated for water oxidation activity.

Promotores: Prof.dr. E.F. van Dishoeck, Prof.dr. C.P. Dullemond

Promotor: Prof.dr.ir. E. Deprettere

Promotor: F. Arbab

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.

Promotor: M. Franx, Co-Promotor: I.F. Labbé

This thesis aims to enhance our understanding of galaxies by testing theoretical models of galaxy formation against observations, particularly in the cases of extreme systems which have been found to have an excess of baryonic mass in their central regions, in the form of either supermassive black holes…

Hybrid zones occur where two species meet and produce offspring (hybrids). Typically, hybrids show a considerable reduction in fitness. In this thesis two hybrid zones are treated.

The dissertation describes TEM experiments on heterogeneous catalysts.

Promotor: Prof.dr. M. Franx, Co-Promotor: Rychard Bouwens

Promotie

Existing work in probabilistic language modeling can be mostly divided into two categories: (i) Purely sequential, string-level approaches ensure fluency at the local level without notion of grammaticality and seek improvements in the use of massive training corpora. (ii) Fully structural, tree-based…

The goal of the project is the development of stream mining techniques for complex patterns such as graphs. We will try to extend the existing state-of-the-art techniques into two, orthogonal directions: on the one hand, the mining of more complex patterns in streams, such as sequential patterns and…

Cursus