The class-imbalance problem is a challenging classification task and is frequently encountered in real-world applications. Various techniques have been developed to improve the imbalanced classification performance theoretically and practically.

In this thesis, we study different curved single crystals because of the diversity of surface structures across their curvature.

Films van masterstudenten Annelies van der Ploeg, Ildikó Zonga Plájás en Dewi Plass zijn komende donderdag te zien op het BEELD voor BEELD festival 2015 in EYE Amsterdam.

Carbohydrates are present on the surface of bacteria making them suitable antigen candidates for vaccine development. This thesis deals with the synthesis of two carbohydrate-based components; the capsular polisaccharide of S. aureus type 5 and teichoic acids from staphilococci and enterococci speci…

In our research protein translocation from Agrobacterium into yeast and plant cells is studied to obtain fundamental insights in the translocation process

Wat doe je als je iets te weten wilt komen? Tegenwoordig gebruikt men voornamelijk het internet om informatie te verkrijgen. Een lezer moet deze informatie vaak uit meerdere bronnen halen en die bronnen met elkaar in verband brengen, om zo een compleet plaatje te vormen van het onderwerp. Soms is de…

This thesis advances automata learning, a key area in computer science, with applications in software verification, biological analysis, and autonomous technologies. It explores three main themes: first, it introduces a passive learning algorithm for generating compact probabilistic models from positive…

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.

The aim of this thesis is to expedite and ensure the systematic accuracy of clearance scaling from adults to paediatric patients, with a special focus on drugs undergoing hepatic metabolism.

In this course, you will explore the organs involved in our food digestion and discover the common causes of abdominal and pelvic pain. The latest graphics and animations will give you new insights and understandings of this part of the body.

Promotor: G.P. van Wezel, Co-promotor: Y.H. Choi

Glycoconjugate vaccines are composed of microbial poly- or oligosaccharides covalently linked to a carrier protein.

Wij bestuderen de dagelijkse praktijk van individuen, groepen en gemeenschappen - zowel in Nederland als wereldwijd - om ze te plaatsen binnen de complexe processen van sociale en globale ontwikkeling. In Leiden zijn we gespecialiseerd in de gevolgen van globalisering op het gebied van milieu, sociale…

IoT technology poses serval opportunities to supply chains. This thesis employs grey correlation and forecasting models, system dynamics, agent-based modeling, and ex-ante LCA to investigate and quantify the opportunities and risks of IoT-enabled sustainable supply chain operations from both industrial…

In this thesis, we consider various (electro)chemical phenomena at surfaces and nanoparticles and their underlying atomistic processes, which we studied using first-principles methods such as density functional theory.

This thesis focuses on two processes involved in fighting infections: metabolism and immune cell motility and navigation.

Promotor: Prof.dr. E.F. van Dishoeck, Co-Promotor: G.J. Herczeg

Waarom zijn transnationale en interculturele agenten zoals Henrich Carloff en Willem Leyel belangrijk voor de studie van de vroegmoderne expansie?

Op 16 december promoveert Yachan Liang. Het Leiden University Centre for Linguistics feliciteert Yachan!

Deze studie kijkt naar netwerken van mensen die betrokken zijn bij conflicten, zowel binnen landen als over de grenzen heen. Het gebruikt verschillende onderzoeksmethoden om te begrijpen hoe deze netwerken werken, vooral in de Sahel (in Afrika) en andere gebieden.

To maximise your personal development, we ensure tutorials are small-scale and staff members extremely accessible. In year one, you’ll have an average of 12 contact hours, half of which comprise lectures (in English) and the remainder tutorials (optionally Dutch or English).

This thesis is a (biased) journey through very different topics in astrophysics: quasars and new populations of active galactic nuclei, gravitational waves from merging black holes, and protoplanetary discs around young stars.

Promotor: J.S. Kaastra Co-promotor: E. Constantini

Promotor: Prof.dr. B.R. Katzy, Prof.dr. H.J. van den Herik, Prof.dr. G.H. Baltes (University of Applied Sciences Konstanz)

Promotores: Prof.dr. G.W. Canters, Prof.dr. T.J. Aartsma

In this thesis, the role of mast cells in atherosclerosis and novel therapeutic strategies to inhibit atherosclerosis progression are discussed. The first part of the thesis specifically focuses on the relation between mast cells and advanced human atherosclerotic plaque characteristics.

Classical statistical methods, such as p-values, are difficult for researchers to apply correctly. They for example do not allow drawing conclusions from a study early, or for extending a study with extra research groups that want to make their data available later.

Promotor: Jaap Brouwer, Co-promotor: Remus Th. Dame

In this thesis, I focused on studying the above- and belowground interactions of J. vulgaris from a plant-soil feedback (hereafter, PSF) perspective. I investigated the temporal variation of negative PSF and examined the effects of root-associated bacteria on plant performance and aboveground herbiv…

A single self-assembled semiconductor quantum dot in a high-finesse optical microcavity - the subject of this thesis - is an interesting quantum-mechanical system for future quantum applications. For instance, this system allows trapping of an extra electron and thus can serve as a spin quantum memory,…

Nanoparticles can be used as delivery systems for both small molecules and macromolecules such as proteins, peptides or oligonucleotides. This thesis focuses on the use of liposomes, nanometric vesicles formed by a lipid bilayer enclosing an aqueous core. Liposomes are highly versatile delivery syst…

‘Over leven in Aarlanderveen’ ,de film die masterstudent Marleen Oostenrijk voor haar afstudeerproject van Culturele Antropologie en Ontwikkelingssociologie maakte, wordt 22-28 februari uitgezonden door Studio Alphen. De film brengt de leefbaarheid in beeld van het dorp en wat leefbaarheid inhoudt…

Plants and soils from natural ecosystems harbor great diversity of soil microorganisms, which could potentially contribute to the sustainability of horticulture. The knowledge about using wild plant species and soil from natural ecosystem to improve the crop health will advance the application of ecological…

This thesis seeks to investigate how cancer-associated mutations affect the pharmacological properties of selected GPCRs—primarily A2AAR and 5-HT2CR—through a combination of ligand binding assays, signaling readouts, kinetic profiling, and cellular functional assays.

Indigenous Latin American artifacts have attracted the interest of Europeans since the earliest moment of contact between Europeans and the Indigenous peoples of the Americas. The ERC-funded BECACO project uses an innovative multidisciplinary framework to investigate the provenance of ethnographic and…

Promotores: G.A. Persoon, H.H. de Iongh

Over the past years it has been discovered that the population of extra-solar planets is large and diverse.

We have studied shape with a particular focus on the zebrafish model system. The shape is an essential appearance of the phenotype of a biological specimen and it can be used to read out a current state or response or to study gene expression.

Vanaf de koloniale tijd tot heden hebben grote aantallen Javanen hun woonplaats verlaten om zich in andere delen van Indonesië of veel verder weg te vestigen. Vaak was deze spreiding gedwongen, vaak met traumatische gevolgen.

Throughout the history of computer science, a major challenge has been how to assert that software is free of bugs and works as intended. Software bugs can lead to serious negative impacts on any software system. Throughout the main body of the thesis, we implemented a series of studies on exploring…

Electoral Systems and Turnout: Evidence From a Regression Discontinuity Design. In dit artikel, gepubliceerd op de website SAGE research methods, bespreken auteurs Jaroslaw Kantorowicz en Tobias M. Hlobil hoe een Regression Discontinuity Design uitgevoerd kan worden.

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

This Thesis describes the synthesis of D-alanylated ribitol-based wall teichoic acids from S. aureus to probe their interaction with immune-binding partners.

This dissertation presents new cryptographic protocols, which can be divided into two families.

The investigations described in this thesis lay out strategies aimed at advancing antibiotic research and development. The examples presented revolve around two main approaches: understanding drug-target interactions and target identification.

This thesis addresses the chemical processes that determine the compositions of giant planet atmospheres.

Promotor: H.J.A. Röttgering, Co-promotor: M. Haverkorn

Prematurely born neonates require, amongst others, pharmaceutical therapy. Dosing guidelines for these therapies are often based on data from term born neonates or older infants, while these are not necessarily similar to prematurely born neonates.

Promotores: Prof.dr. J. Zaanen, Prof.dr. K.E. Schalm

This thesis presents insights from our study of various correlated electron systems with a scanning tunneling microscope (STM). In ordinary metals, electron-electron interactions exist, but get substantially screened due to the sheer number of electrons.