Promotor: W.Th.F. den Hollander

Promotores: W. Th. F. den Hollander, M.O. Heydenreich

Promotor: Promotor: W.Th.F. den Hollander, Co-promotor: V. Sidoravicius.

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.

The thesis mainly contributes to the characterization of Majorana fermions as they appear in the Condensed Matter context.

The main topic of this PhD thesis is the Arakelov ray class group of a number field, an algebraic object that contains both the ideal class group structure and the unit group structure.

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 dissertation consists of two parts, each of which considers a different research area related to random interval maps. In the first part we are interested in random interval maps that are critically intermittent.

The parabolic Anderson model (PAM), which is the Cauchy problem for the heat equation with random potential. The PAM is a mathematical model that describes how mass (i.e. matter or energy) flows in a medium in the presence of a field of sources and sinks.

Wiskundige Oliver Nagy kan zich nog levendig herinneren dat hij voor het eerst leerde over ‘random walks’. ‘De docent liet ons denken aan een groep dronken studenten die door de straten dwaalden. Bij elk kruispunt draaien ze één van hen in de rondte en gaan ze in de richting waar diegene tot stilstand…

The aim of this thesis is to present novel techniques for proving cryptographic schemes secure against quantum adversaries. Most results are within the context of an idealized model called the ‘quantum random-oracle model’.

This dissertation presents four separate chapters, all striving towards the same goal: to understand dynamic phenomena occurring in dynamic networks and to explore the emergence of equilibrium in a broad sense.

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

This dissertation consists of two parts, with the common theme

Principles of Environmental Sciences provides a comprehensive picture of the principles, concepts and methods that are applicable to problems originating from the interaction between the living and non-living environment and mankind. Both the analysis of such problems and the way solutions to environmental…

Promotor: Prof.dr. H.V.J. Linnartz

This thesis explores Breaking of Ensemble Equivalence (BEE) in random graph models by examining the spectral properties of adjacency matrices. The goal is to identify spectral characteristics that differentiate random graph ensembles, enhancing the understanding of complex network structures and beh…

De afdeling richt zich op het verbeteren van het wetenschappelijk begrip in de relatie tussen mens en natuur. Hoe beïnvloedt menselijk handelen (via bijvoorbeeld klimaatverandering, landgebruiksverandering en de emissie van mogelijk toxische verbindingen) de natuur in het algemeen en de biodiversiteit…

This thesis explores Breaking of Ensemble Equivalence (BEE) in random graph models by examining the spectral properties of adjacency matrices. The goal is to identify spectral characteristics that differentiate random graph ensembles, enhancing the understanding of complex network structures and beh…

Promotor: W.T. de Groot

While ecosystems have concrete benefits for human society, these benefits are typically overlooked in decision-making.

Promotor: Prof.dr. G.R. de Snoo, Co-promotor: R. Heijungs

Van 2 t/m 6 juni 2014 heeft Prof. dr. Frank den Hollander 2 voordrachten verzorgd tijdens de workshop ‘Recent Models in Random Media’ op het Centre International de Rencontres Mathematiques in Marseille (CIRM), een instituut dat gedurende het hele jaar workshops voor wiskundigen organiseert.

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

De Universiteit Leiden houdt haar drinkwaterverbruik zo laag mogelijk.

The majority (80%) of e-waste generated globally are recycled informally in developing countries.

Metal production is not only energy-intensive and a major source of greenhouse gas (GHG) emissions, but is also associated with other impacts affecting human health and ecosystems.

Promotor: M.T.M. Koper, Co-Promotor: L.B.F. Juurlink

Hoe bestudeer je de groei van micro-organismen, de verspreiding van epidemieën of de genezing van wonden, zonder daadwerkelijk experimenten uit te voeren? Daoyi Wang, promovendus aan het Mathematisch Instituut, werkte aan een specifiek wiskundig model dat de groei van micro-organismen en vele andere…

Water is all around us and is vital for all aspects of life. Studying the various compounds and life forms that inhabit natural waters lets us better understand the world around us.

Promotor: M.K. Richardson, Co-Promotor: F. Witte

Promotores: E. van Dijk, G.R. de Snoo. Co-promotor: H. Staats

Een internationaal team van sterrenkundigen, met daarbij ook astronomen van de Universiteit Leiden, heeft de ontbrekende schakel gevonden in het pad dat water aflegt via stervormingswolken en jonge sterren naar kometen en planeten. Ze deden dat met hulp van het ALMA-observatorium in Chili. De onderzoekers…

Promotor: V. Vitelli, Co-promotor: J. Paulose

Promotor: Prof.dr. J.G.E.M. Fraaije, Co-promotor: A. Kros

In this thesis,

To limit the effects of climate change, global average temperature since pre-industrial measurements are to be kept well below 2 °C preferably even at 1.5 °C.

De afdeling Environmental Biology (CML-EB) houdt zich bezig met vraagstukken rondom biodiversiteit en natuurlijke hulpbronnen op het platteland in westerse en niet-westerse gebieden.

To design the ideal water oxidation catalyst, understanding of the catalytic mechanism and decomposition pathways is essential.

The International Course on Water Use and Management in Cagayan Valley The Philippines (2011-2015)

Astronomical observations of cold regions in the universe show a rich inventory of ices. Part of these ices may end up on planets like our own, but in that journey they will be exposed to considerable amounts of radiation.

Promotor: Prof.dr. C.W.J. Beenakker

Promotor: Richard D. Gill

This thesis examines the impacts and challenges of water use of electric power system. This thesis found that there are large differences in water use of electricity technologies, with hydropower and thermal power being two large water users.

Onderzoek met de ALMA-telescoop waaraan ook de Leidse wetenschappers John Tobin en Steven Bos meewerkten, heeft voor het eerst de sneeuwgrens van water binnen een protoplanetaire schijf in beeld gebracht. Publicatie in Nature op 14 juli

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…

Hydrogen-based fuels are regarded as promising candidates for decarbonizing the maritime shipping sector.