This thesis investigates opinion dynamics on random graphs through the lens of the voter model, a classical interacting particle system used to describe how consensus emerges in networks.

This thesis describes a study from both a theoreticaL and an experimental point of view.

Building a Deep Cross-media Transfer Network to extract visual relations that relieve the problem of insufficient training data for visual tasks.

Het Zwaartekracht-programma NETWORKS heeft een COFUND-beurs gekregen van 3 miljoen. De helft daarvan komt vanuit het programma Marie Skłodowska-Curie Actions van de Europese Commissie, partners uit het bedrijfsleven betalen de andere helft. Van de 14 nieuwe promovendi komen er twee bij de Leidse onderzoeksgroep…

Promotor: G.A. van der Marel, Co-promotor: D.C. Codée

Promotor: Prof.dr. M. Ubbink

Promotie

Promotor: Ed F. Deprettere, Co-promotor: Todor P. Stefanov

EnSMiRT wil de expertise binnen de alliantie Una Europa benutten en de samenwerking tussen toonaangevende onderzoekers die in verschillende stadia van de minerale waardeketen werken, stimuleren om deze dringende uitdagingen rechtstreeks aan te pakken.

This thesis is divided into two parts. In Part I we study metastability properties of queue-based random-access protocols for wireless networks. The network is modeledas a bipartite graph whose edges represent interference constraints. In Part II we study spectra of inhomogeneous Erdős-Rényi random…

Onderzoeken hoe gegevens afkomstig van draagbare technologieën kunnen worden gebruikt om effectieve gedragsveranderingen te identificeren die hopelijk zullen leiden tot gezondheidsverbeteringen.

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 endophytic microbiota is a community of various microorganisms that reside in plant tissue. These microbes are known to promote plant health and resilience, and their members do not simply exist side by side.

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.

This thesis pioneers diatom molecular identification and quantification through genome-scale methods, with four key aims: (i) reviewing DNA/RNA sequencing methods in aquatic biomonitoring to highlight their strengths and limitations;

Plants and their pollinators form complex interaction networks. Within these networks, species differ widely in the number of species they interact with.

Promotor: Prof.dr. G.P. van Wezel

Het LIACS organiseert verschillende lezingenseries, zoals het LCN2 Seminars en de SAILS Lunch Time-seminars.

The increasing resistance of pathogenic bacteria to antibiotics necessitates the discovery of new medicines.

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.

Promotor: Prof.dr. E. Bouwman

Hoe kun je leerlingen en studenten leren grip te krijgen op complexe ‘moerassituaties’? Oratie uitgesproken door prof.dr.ir. Fred Janssen bij de aanvaarding van het ambt van hoogleraar in de Didactiek van de Natuurwetenschappen aan de Universiteit Leiden op 19 juni 2017.

Promotor: Prof.dr. A. Doelman, Co-promotor: V. Rottschäfer

Multicopper oxidase, laccase, can efficiently reduce oxygen to water and are mostly used in the enzymatic biofuel cells.

Explaining treatment response variability between and within patients can support treatment and dosing optimization, to improve treatment of individual patients.

In this thesis, deep learning is studied from a statistical perspective. Convergence rates for the worst case risk bounds of neural network estimators are obtained in the classification, density estimation and linear regression model.

De Faculteit der Wiskunde en Natuurwetenschappen streeft naar impact van haar onderzoek en onderwijs op de samenleving. Daarvoor werkt de faculteit in binnen- en buitenland samen met andere universiteiten en instituten, maatschappelijke partners, het bedrijfsleven én met het brede publiek.

Promotor: Prof.dr. J.N. Kok, Co-Promotor: W.A. Kosters

According to the amyloid cascade hypothesis, accumulation of beta-amyloid (Aβ) peptides initiates the pathological cascade in Alzheimer's disease (AD).

This thesis explores how bees and hoverflies are distributed across the Dutch landscape and how ecological and landscape factors shape their occurrence.

Microcredentials maakt onderwijs voor u als professional nóg toegankelijker. Volgt u een module van 3 tot 30 EC (studiepunten), dan ontvangt u na afronding van het onderwijs een microcredential. Dit digitale certificaat wordt erkend door 22 hogescholen en 12 universiteiten.

This two-day international conference organised by the 'Innovating Knowledge' Project aims to bring together researchers applying network analysis to premodern manuscripts and manuscript texts.

In this thesis we explore machine and deep learning approaches that address keychallenges in high dimensional problem areas and also in improving accuracy in wellknown problems. In high dimensional contexts, we have focused on computational fluid dynamics (CFD) simulations.

With the emergence of online social networks (OSNs), the way people create and share information has changed, which becomes faster and broader than traditional social media.

There is no heritage without emotional sharing and clashing. This article explores the involvement of divergent emotions in heritage making by discussing the debate series of Imagine IC and the Reinwardt Academy and zooming in on the commemoration of slavery and imagery of ‘Black Pete’ in the Netherlands.…

Promotie

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.

Promotie

In this work, I explore the creation of new methods that optimize simulations of the gravitational N-body problem. Specifically, I take advantage of the recent popularity of Machine Learning methods to find tools that can suit this problem.

Sinds kort bestaat het Leiden University Buddhist Studies Network, opgericht bij het LIAS, het Leiden University Institute for Area Studies.

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.

A convolutional neural network (CNN) is a biologically inspired algorithm, highly capable at processing images and videos.

This thesis mainly focuses on cross-modal retrieval and single-modal image retrieval via deep learning methods, i.e. by using deep convolutional neural networks.

De Universiteit Leiden is een platform rijker. Vicerector Hester Bijl gaf op 19 september het officiële startschot voor de oprichting van het LGBT+ Network.

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.

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Salicylic acid (SA) is a plant hormone, which is involved in the defense responses to pathogens and to abiotic stress, and in the regulation of plant growth and development.