163 search results for “singular perturbations” in the Public website
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Pulses in singularly perturbed reaction-diffusion systems
Promotor: Arjen Doelman, Co-promotor: Vivi Rottschäfer
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Patterns in natural systems
Promotor: A. Doelman, Co-promotores: P.J.A. van Heijster; A. Zagaris
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Geometry of Vegetation Pattern
One of the effects of climate change is the phenomenon of desertification, a process that occurs in semi-arid and arid areas and causes land degradation as well as vegetation loss. Due to the lack of resources, vegetation self-organizes to sustain itself by forming large-scale spatial patterns.
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Lines in the sand: behaviour of self-organised vegetation patterns in dryland ecosystems
Vast, often populated, areas in dryland ecosystems face the dangers of desertification.
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Periodic pulse solutions to slowly nonlinear reaction-diffusion systems
Promotor: A. Doelman, Co-promotor: J.D.M. Rademacher
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Patterns on Spatially Structured Domains
We consider the propagation of electrical signals through nerve fibres.
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Inflation, Adiabaticity and the Speed of Sound of the Curvature Perturbations
Promotor: A. Achúcarro, Co-Promotor: G.A. Palma
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Waves and Patterns in Discrete Media: Bridging the Gaps
What happens to electrical waves that have to cross gaps in insulation material around nerves in the human body
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Data science for tax administration
In this PhD-thesis several new and existing data science application are described that are particularly focused on applications for tax administrations.
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Hunting for new physics in the primordial Universe
This thesis contributes to studying primordial cosmology theories and their detectability in future observations.
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Mitochondria in chemical-induced toxicity
Chemical-induced organ toxicity is a major concern in the development and use of chemicals, including drugs, pesticides, industrial chemicals and cosmetics. In the last decades, the onset and progression of chemical-induced organ toxicity has been linked amongst others to perturbation of mitochondri…
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Enlightening the Primordial Dark Ages
This thesis is dedicated to the exploration of the primordial dark ages: unknown physics during the earliest stages of the Universe’s expansion that have not yet been directly probed by observations. Cosmic inflation is a burst of exponential expansion of space after the “Big Bang”.
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Expansions of quantum group invariants
In my research, we developed a method to distinguish knots. A knot is a mathematical depiction of the everyday knot that occurs in ropes and cords.
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Zeta-values of arithmetic schemes at negative integers and Weil-étale cohomology
This work is dedicated to interpreting in cohomological terms the special values of zeta functions of arithmetic schemes.
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Piecewise deterministic Markov processes: an analytic approach
Promotor: S.M. Verduyn Lunel, Co-Promotores: S.C.Hille, O.W. van Gaans
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Transport coefficients and low energy excitations of a strongly interacting holographic fluid
In this thesis, classes of strongly interacting quantum field theories, have been studied.
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The Anthropomorphic Hegemony of Subjectivity: Critical Reflections on Law and the Question of the Animal
On 16 December 2019, Jan-Harm de Villiers defended his thesis 'The Anthropomorphic Hegemony of Subjectivity: Critical Reflections on Law and the Question of the Animal'. The doctoral research was supervised by Prof. P. Cliteur.
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Shocks and failure in fragile matter
Vitelli
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The special use of the 3rd person singular pronoun in Cantonese
Lecture
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Deformations of nodal surfaces
Promotores: P. Stevenhagen, L. van Geemen Co-promotor: R.M. van Luijk
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Chemical Biology Lecture: Chemical biology tools to perceive and perturb carbohydrates and enzymes in living systems
Lecture
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A fixed point approach towards stability of delay differential equations with applications to neural networks
Promotor: S.M. Verduyn Lunel, Co-Promotor: O.W. van Gaans
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Discovery of novel inhibitors to investigate diacylglycerol lipases and α/β hydrolase domain 16A
Promotor: H.S. Overkleeft, Co-promotor: M. van der Stelt
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Development of automatic image analysis methods for high-throughput and high-content screening
Promotor: B. van de Water, Co-Promotores: J.H.N. Meerman, F.J. Verbeek
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Daily Records of events in an Ancient Egyptian Artisans'Community'
Irene Morfini defended her thesis on 21 February 2019
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Aspects of cosmic acceleration
The focus of the dissertation
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Unconventional fabrication of 2D nanostructures and graphene edges
In this work, we illustrate unconventional approaches towards the fabrication of edge functionalized graphene nanostructures and bidimensional architectures in polymeric and metallic supports, with an outlook towards molecular sensing devices.
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The stochastic geometry of non-Gaussian fields
Promotor: V. Vitelli, Co-promotor: J. Paulose
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Rapid and profound rewiring of brain lipid signaling networks by acute diacylglycerol lipase inhibition
Diacylglycerol lipases (DAGLα and DAGLβ) convert diacylglycerol to the endocannabinoid 2-arachidonoylglycerol. Our understanding of DAGL function has been hindered by a lack of chemical probes that can perturb these enzymes in vivo.
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Precision modeling of breast cancer in the CRISPR era
The molecular mechanisms that instigate a healthy cell to become malignant are fueled by (epi)genetic alterations in so-called driver genes.
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Improving robustness of tomographic reconstruction methods
Promotor: Prof.dr. K.J. Batenburg
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Orion's Dragon and Other Stories
Stellar feedback is a crucial ingredient in the evolution of galaxies.
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Clavis Aurea? Structure-enabled approaches of identifying and optimizing GPCR ligands
Promotores: A.P. IJzerman, H.W.T. van Vlijmen
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Systems dermatology of immune-mediated dermatological diseases: cutaneous T-cell lymphoma
The complex pathophysiology of immuno-dermatological disorders is multifactorial, including environmental, skin microbiome, (epi)genetic and immune dysregulation conditions. This project primarily focuses on the orphan disease mycosis fungoides, a subtype of cutaneous T-cell lymphoma. The current pathophysiological…
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Effects of heavy fields on inflationary cosmology
Promotor: Prof.dr. A. Achucarro, Co-Promotor: J.W. van Holten
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A Grammar of Logba (Ikpana)
This book presents a comprehensive description of the grammar of Logba, one of the fourteen Ghana-Togo Mountain (GTM) languages spoken by approximately 7,500 speakers on the South-Eastern frontier of the Ghana-Togo border. It is the outcome of fifteen months research in Logba speaking communities.
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The Economics of Friendship
In this doctoral dissertation (2012) the effects of the monetization of the Greek world in the 5th and 4th century on conceptions of reciprocity in friendship are analyzed.
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A Grammar of Cheke Holo
On November 21st, Frederick Boswell succesfully defended his doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Frederick on this great result.
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Hausa Verbal Compounds
Verbal compounds abound in Hausa (a Chadic language).
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A monodromy criterion for existence of Neron models and a result on semi-factoriality
In the first part, we introduce a new condition, called toric-additivity, on a family of abelian varieties degenerating to a semi-abelian scheme over a normal crossing divisor.
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A Dutch Republican Baroque. Theatricality, Dramatization, Moment and Event
In the logic and aesthetics of a republican baroque the existing world is the result of a moment in which for a split second two or more realities are equally real and after which only a singular one becomes actualized.
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Systems diagnosis of chronic diseases, explored by metabolomics and ultra-weak photon emission
Promotor: J. van der Greef; Co-promotor: E. van Wijk, M. Wang
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Targeted Therapy for Triple-Negative Breast Cancer
The research described in this thesis focused on identifying novel drug targets and synergistic combinations for triple-negative breast cancer (TNBC), a virulent subtype of breast cancer with a dismal prognosis and limited therapeutic options.
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Dynamics of the Oort Cloud and Formation of Interstellar Comets Santiago Torres Rodriguez
The solar system was formed approximately 4.56 billion years ago. Despite the numerous theories that have been developed over the years, the formation and evolution of the solar system still remain unclear.
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Necropolis journal: The Administration of an Egyptian Artisans’ Community
What was the practice of keeping the Necropolis Journal?
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A Grammar of Konso
This dissertation provides a description of Konso, a Cushitic language spoken by about 250,000 speakers in the South-West Ethiopia.
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Leaving a Lasting Impression. The Impact of Incunabula on Late Medieval Spirituality, Religious Practice and Visual Culture in the Low Countries
This project investigates how the first generation of Dutch printed books (the incunabula, 1473-1501) affected late medieval spirituality, religious practice and visual culture in the Low Countries.
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Computational Drug Discovery
Research in this group, headed by Gerard van Westen, focusses on computational methods integrated in different parts of the drug discovery process. More specifically, topics include innovative treatments for cancer, selectivity modeling, translational research, allosteric modulation, drug resistance…
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Skin Barrier and Vaccination
The Skin Barrier and Vaccination group is led by Prof. Joke Bouwstra. One of the key functions of the skin is its barrier function, which is located in the uppermost layer of the skin, the stratum corneum. The stratum corneum consists of enucleated dead cells (corneocytes) embedded in a lipid matrix.…
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Photographs & Preservation. How to save Photographic Artwork for the Future?
How can we understand the material instability of photographic (mixed media) artworks (1960s - present) from an integrated approach of Art History, Conservation Science and Chemistry in order to preserve these works for the future?