For many system in statistical physics the microcanonical and canonical ensemble are equivalent in the thermodynamic limit, but not for all.

This thesis seeks to combine two different research topics; Multi-Objective Optimization and Complex Network Analysis.

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.

This dissertation consists of two parts, with the common theme

On Friday 23 September 2016 the Leiden Complex Networks Network day, the LCN2 day, will take place in Leiden.

Den Hollander

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…

Doordat markten in toenemende mate zijn geïnternationaliseerd, zijn (sub-)nationale toezichthouders ook steeds vaker internationaal actief. Binnen vormen van internationale netwerksamenwerking wisselen deze toezichthouders onderling informatie uit en onderhandelen ze over internationale standaarden…

Het LGBT+ Network biedt een platform aan alle lesbische, homoseksuele, biseksuele, transgender, intersekse en queer medewerkers en studenten van de Universiteit Leiden.

Promotor: R. Tijdeman, Co-promotor: H.J.J. te Riele

Promotor: A.W. van der Vaart

Religion, Philosophy, and the Pre-modern World

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.

Een infrastructuur voor onderzoeksdata in computationele sociale wetenschappen

Transport inspectorates are looking for novel methods to identify dangerous behavior, ultimately to reduce risks associated to the movements of people and goods. We explore a data-driven approach to arrive at smart inspections of vehicles.

Leiden University and the Ministry of Infrastructure and Water Management are involved in a collaboration in the form of a research project titled 'Data-Driven Risk Assessment in Infrastructure Networks'

In this thesis, we show that we can use Shimura’s CM theory to explicitly compute the Hilbert class field of any primitive quartic CM field.

This thesis develops statistical methods for the analysis of high dimensional data: high dimensional networks reconstruction (Chapters 1-4), incorporation of prior information in networks reconstruction (Chapters 2-4), incorporation of prior knowledge in genetic association studies (Chapter 3).

De recente terroristische aanslagen in Europa zijn vermoedelijk niet alleen acties van individuen, maar acties gefaciliteerd door grotere jihadistische netwerken. Maar hoe opereren dit soort netwerken? Door inzicht te krijgen in hun modus operandi kunnen terroristische dreigingen worden voorkomen.

Promotor: J.N. Kok, Co-Promotor: A.J. Knobbe

Protein–protein complexes are formed via transient states called encounter complexes that greatly influence the formation of the stereospecific complex.

Promotor: H.J. van den Herik, B.R. Katzy, Co-promotor: K. Sailer

Promotor: F. Arbab, R. De Nicola, Co-Promotor: M. Tribastone

This thesis describes the design, characterization and application of dextran based crosslinked network.

Promotor: Prof.dr.ir. E. Deprettere

One of the major limitations in culturing complex tissues or organs is the lack of vascularization in the cultured tissue. Development of a functional capillary bed could overcome this problem.

Promotor: Peter Stevenhagen

Lipsius, Cleveringaplaats 1, 2311 BD, Leiden

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…

This thesis describes the genetic and prokaryotic diversity of giant barrel sponges.

Onderzoekers aangesloten bij het Leiden Leadership Centre zijn actieve leden van het PUPOL netwerk. PUPOL is een internationaal academisch netwerk voor publiek en politiek leiderschap. Dit netwerk stimuleert de uitwisseling van ideeën en bevordert gezamenlijk onderzoek tussen wetenschappers gericht…

‘Het was nog nooit zo makkelijk om een Studium Generale reeks op te zetten.’ Met deze woorden bedankte organisator Tilman Grünewald spreker Frank den Hollander, die op maandag 20 februari de Studium Generale-reeks over complexe netwerken aftrapte.

Where and how are critical materials currently used and how can this information be used to develop scenarios about their future demand.

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

From surface science towards industrial practice using high-pressure scanning tunneling microscopy.

Calamus javensis is polymorphic. Morphometry and molecular approach resulted in all names used in the complex are regarded as synonyms of C. javensis except C. tenompokensis, which is retained as a distinct species. One variety is here recognized, C. javensis var. polyphyllus (including C. acuminatu…

Stars like the sun are born in large molecular clouds existing from gas and dust. During the formation process, the chemical composition of the material can be altered drastically by the changing physical conditions.

Lipsius, Cleveringaplaats 1, 2311 BD, Leiden

Analytical tools for environmental design and management in a systems perspective. The combined use of analytical tools.

A P300-based Brain Computer Interface character speller, also known as P300 speller, has been an important communication pathway, under extensive research, for people who lose motor ability, such as patients with Amyotrophic Lateral Sclerosis or spinal-cord injury because a P300 speller allows human-beings…

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

Promotor: Prof.dr. M. Ubbink

Promotors: W. Jiskoot; G.J. Witkamp, Co-promotor: M.R. Nejadnik

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

This interdisciplinary study focuses on (trans)national ethnic and popular networks, combining historical-ethnographic and computational methods to understand the ‘workings’ of networked conflict interfering in the increasingly violent conflict in the Sahel (Africa) and beyond. The project focuses on…

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.…