231 zoekresultaten voor “random walks in random environments” in de Publieke website
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Random walks in dynamic random environments
Promotor: W.Th.F. den Hollander
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Some case studies of random walks in dynamic random environments
Promotor: Promotor: W.Th.F. den Hollander, Co-promotor: V. Sidoravicius.
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Random walks: als een groep dronken studenten door de straten
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…
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Wireless Random-Access Networks and Spectra of Random Graph
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…
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On the random-matrix theory of Majorana fermions in topological superconductors
The thesis mainly contributes to the characterization of Majorana fermions as they appear in the Condensed Matter context.
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Exploration on and of Networks
This dissertation consists of two parts, with the common theme
- Healthy University- Let's Walk Week 2021
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Microscopy and Spectroscopy on Model Catalysts in Gas Environments
In surface science there is great effort to move from studying simple, flat model surfaces in vacuum to investigating more complex model catalysts in gas environments (in situ). This thesis gives three examples of such studies using microscopy and spectroscopy.
- Healthy University- Let's Walk Activiteiten
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CIRM interviewt Frank den Hollander
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.
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Learner–learner interaction in digital learning environments: what and how are we measuring?
In deze dissertatie onderzoekt Galikyan hoe de multidimensionaliteit van gegevens over interactie tussen studenten en de veelzijdigheid van deze interactie van invloed zijn op de meting van interactie tussen studenten in digitale leeromgevingen.
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Random walks and the contact process
Promotie
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The parabolic Anderson model and long-range percolation
Promotor: Prof.dr. F. den Hollander, G.Maillard
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cryo-EM tools to study the ultrastructure of microbes in changing environments
Cryogenic electron microscopy (cryo-EM) is a powerful technique used to visualize the inside of cells and to study specific protein complexes. Within this thesis, I describe the use of various cryo-EM techniques to gain insight into the structural changes of the human pathogen, Vibrio cholerae, as it…
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The stochastic geometry of non-Gaussian fields
Promotor: V. Vitelli, Co-promotor: J. Paulose
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Rationally designed peptide based functional biomaterials
Promotor: Prof.dr. J.G.E.M. Fraaije, Co-promotor: A. Kros
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Signatures of Majorana zero-modes in nanowires, quantum spin Hall edges, and quantum dots
Promotor: Prof.dr. C.W.J. Beenakker
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Scattering and absorption in 2D optics
Scattering of light in the presence of nano-structured materials, i.e. with features in the order of the wavelength of the light or smaller, reveals details of how light interacts with matter at the nanoscale.
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Measures and Matching for Number Systems
This thesis provides explicit expressions for the density functions of absolutely continuous invariant measures for general families of interval maps, that include random maps and infinite measure transformations, not necessarily number systems.
- A Guided Tour through Random Media
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generation of eDNA monitoring tool for biomass studies in freshwater environments
How can we quantify the density of species within a community through environmental DNA concentrations?
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The integration of meta-analysis and classification & regression trees: meta-CART
In meta-analysis, heterogeneity often exists between studies. In such cases, it is essential to investigate the sources of heterogeneity and understand the relationship between effect size and study characteristics (i.e., moderators).
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LCN2 Seminar: Sparse random graphs with many triangles.
Lezing
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Dynamical Gibbs-non-Gibbs transitions and Brownian percolation
Promotor: Prof.dr. W.Th.F. den Hollander, Co-promotor: R. Fernandez.
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LCN2 seminar: Learning in Social Networks with Random Communication
Lezing
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ISSA's Internationale Conferentie over 'Nurturing Environments' in Leiden
Op 18 en 19 juni komen internationale experts op het gebied van ontwikkeling in de vroege kindertijd samen met de internationale Step by Step Association (ISSA) in Leiden. Tijdens deze conferentie zullen zij de beste methoden onderzoeken voor het ondersteunen van Nurturing Environments for the Wellbeing…
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Cryptography from quantum uncertainty in the presence of quantum side information
Promotor: Ronald Cramer, Co-promotor: Serge Fehr
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On periodically driven quantum systems
Promotor: C. W. J. Beenakker, Co-promotor: J. K. Asboth
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Analysis and Stochastics
The research of the Applied Mathematics cluster is concerned with such diverse topics as dynamical systems, representation theory, differential equations and pattern recognition.
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Dancing with the Stars
This thesis develops a method for direction dependent calibration of the ionosphere in radio interferometric data.
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LCN2 Seminar: Breaking of ensemble equivalence for dense random graphs under a single constraint
Lezing
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Seminar: Spectral signature of breaking of ensemble equivalence for random network models
Lezing
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LCN2 Seminar: Dynamic random graph model for polymerisation in a confined environment
Lezing
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LCN2 Seminar: Queue-based activation protocols in random-access wireless networks
Lezing
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On the random-matrix theory of Majorana fermions in topological superconductors
Promotie
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LCN2 Seminars
Een maandelijks seminar over complexe netwerken, gericht op wetenschappers uit alle disciplines.
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Steady-State Analysis of Large Scale Systems
Promotor: W.Th.F. den Hollander Co-Promotor: F.M. Spieksma
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On electronic signatures of topological superconductivity
Promotor: Prof.dr. C.W.J. Beenakker
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Algorithms for analyzing and mining real-world graphs
Promotor: Prof.dr. J.N. Kok, Co-Promotor: W.A. Kosters
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Statistical physics and information theory for systems with local constraints
Systems with local constraints is a new finding in recent researches on complex systems. The heterogeneous spatial interactions and the temporal dependencies among those numerous units make it difficult to describe by traditional statistical physics.
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Algorithms for finite rings
Promotores: H.W. Lenstra, K. Belabas (University of Bordeaux)
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Student projects
To get an idea of the science communication products and research that is possible, a few examples of student projects of recent years are shown below.
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This Week’s Discoveries | 28 November 2017
Lezing
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Synthetic model microswimmers near walls
Synthetic microswimmers take an important place within the interdisciplinary field of active soft matter.
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Humboldt onderzoeksprijs voor Frank den Hollander
Frank den Hollander heeft de Humboldt onderzoeksprijs ontvangen ter waarde van €60.000. Hij werd genomineerd door twee Duitse collega’s met wie hij al langere tijd samenwerkt. ‘De toekenning was voor mij een volledige verrassing.’
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Learner–Learner Interaction in Digital Learning Environments
Promotie
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Enumeration and Simulation of Lattice Polymers as Models for Compact Biological Macromolecules
Promotores: H. Schiessel, G.T. Barkema
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Breaking & Entering: PAH photodissociation and top-down chemistry
Laboratory, observation and modeling work on the dissociation of polycyclic aromatic hydrocarbons in interstellar environments and the formation of new molecular species through the fragmentation process.
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Electronic spectroscopy of molecules of astrophysical interest
This thesis revolves around the electronic spectroscopy of molecules in the laboratory and the search for the carriers of the diffuse interstellar bands (DIBs).
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Signalling pathways that control development and antibiotic production in streptomyces
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.