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.

Rong Yuang onderzocht de impact van duurzame energie op de CO2 uitstoot van China. China investeert namelijk fors in koolstofarme energiebronnen, zoals kern-, water-, wind- en zonne-energie. Yuang is promovendus bij het Centrum voor Milieuwetenschappen Leiden. Op 17 mei zal zij haar thesis verdedige…

Promotor: Ronald Cramer, Co-promotor: Serge Fehr

Almost three years after receiving her honorary doctorate, Dr Graça Machel returned to Leiden University. Over the course of two days she spoke with students, researchers, and other interested persons, about human rights – particularly those of women and children – in a world in which these are continually…

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…

Innovation plays an essential role in firms' competitiveness and long-term success. It varies from different types, ranging from run-of-the-mill innovation that brings incremental changes to existing technologies to radical innovation that breaks from existing trajectories.

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.

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.

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

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

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.

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

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

What Determines Perceptions of Bias toward the International Criminal Court? Evidence from Kenya. In dit artikel, gepubliceerd in op de website SAGE Journals in het Journal of Conflict Resolution, onderzoeken de auteurs Geoff Dancy, Yvonne Marie Dutton, Tessa Alleblas, Eamon Aloyo de houding ten opzichte…

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

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

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.

Lezing

De Universiteit Leiden heeft in 2021 verder gewerkt aan het verkleinen van haar CO2-voetafdruk door zuiniger om te gaan met grondstoffen en het energieverbruik structureel te verminderen. Dat is te lezen in het Duurzaamheidsverslag 2021.

Sobral

Onder welke omstandigheden beperken paramilitaire groepen hun gebruik van politiek geweld? Dit artikel onderzoekt het gebruik hiervan door de PIRA.

Ramesh Ganohariti onderzoekt de juridische identiteit in drie post-Sovjet aspirant-lidstaten en schetst in dit artikel vier veelvoorkomende scenario's.

Jaroslaw Kantorowicz and Rok Spruk onderzoeken de bijdrage van institutionele hervormingen aan economische groei.

This study seeks to analyse how job stress could be the result of performing administrative tasks

Om de klimaatcrisis het hoofd te bieden, kan een bepaalde nederigheid van de mens ten aanzien van de natuur van groot belang zijn. Tegelijkertijd kan nederigheid ook politieke overheersing in de hand werken. Hoe kunnen mensen zich op een bescheidener manier tot de natuur verhouden zonder hun vrijheid…

Dit artikel levert een bijdrage aan een groeiend aantal onderzoeken naar radicalisering. Het richt zich specifiek op het onderscheid tussen individuen die radicalisering en daardoor betrokken raken bij terroristisch geweld en individuen die radicaliseren maar niet betrokken raken bij geweld.

Op 30 september 2021 verdedigde Babette van Hazebroek haar proefschrift 'Understanding delinquent development from childhood into early adulthood in early onset offenders'. Het promotieonderzoek is begeleid door promotoren prof.dr. J.W. de Keijser en prof. dr. A. Popma (VUMC).

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

Dit artikel gaat in op de onderzoekskloof door te onderzoeken hoe deze instanties hun personeel zo kunnen inzetten dat ze maximale prestaties leveren met het personeel dat ze hebben.

The thesis explores how interstellar chemistry evolves as a function of time and changing physical architectures during the formation of stars.

The thesis describes experimental steps towards reduction of friction on the macroscopic scale by scenarios of thermo- and superlubricity well-known on the nanoscale.

Religion and ethnicity are inextricably linked in discourse within and about Central Asia. One common narrative suggests that as a result of differences between historically sedentary and nomadic populations, ethnic Tajiks and Uzbeks are naturally more religious and more likely to radicalise than their…

De auteurs presenteren een benadering voor het achterhalen van de voorkeuren van de bevolking voor gebruik in de optionele wegingstap in de Levenscyclusanalyse (LCA).

Promotie

Bio-energie met koolstofafvang en -opslag is een veelbelovende methode om CO2 uit de atmosfeer te halen en tegelijkertijd energie op te wekken. Maar deze methode is controversieel, omdat er veel grond en water voor nodig is.

Promotor: Prof.dr. P. Stevenhagen, Co-promotor: B. de Smit

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,…

In this thesis, we aim to shed light on the diverse and often opposing roles of integrin α3β1 in cancer.

This thesis focuses on amyloid proteins, a class of proteins that convert into amyloid fibrils.

The studies described in this thesis deal with glycosidases, in particular alpha-galactosidases.

This thesis focuses on the role of chemokine receptors CXCR3 and CCR2 in the inflammatory process and infection control using the zebrafish model.

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…

Promotor: G.J. Kramer Co-Promotor: E.G.M. Kleijn

The Sun and all the stars in the night sky reside in the Milky Way galaxy. In the at-rest reference frame of the Galaxy, typical stars travel with velocities of about 100-200 kilometres per second.

Jan van den Berg heeft zij proefschrift op 8 november 2018 verdedigd.

The aim of this thesis is to develop and study a robust and adaptable scaffold for supramolecular polymer self-assembly in water.

Promotor: Jelle S. Kaastra Co-promotor: Jelle de Plaa

By growing in a soil plants change the biotic and abiotic properties of the soil in which they grow.

Streptomyces are filamentous bacteria that produce more than two-thirds of known antibiotics.