2,128 zoekresultaten voor “security and that” in de Publieke website
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Split Jacobians and Lower Bounds on Heights
This thesis deals with properties of Jacobians of genus two curves that cover elliptic curves.
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Molecular inheritance from cloud to disk: a story of complex organics and accretion shocks
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.
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Regulation of actomyosin contraction as a driving force of invasive lobular breast cancer
In this thesis, we used genetically engineered mouse models and a variety of cell-culture based assays to identify genes and pathways that are involved in the development and treatment of invasive lobular carcinoma (ILC).
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Cleared for take-off, Game-based learning to prepare airline pilots for critical situations
Over the last decades, aviation safety has improved strongly. As a downside, airline pilots do not have as many opportunities to develop through experience the competencies that they need in critical situations.
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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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Dynamic hydrogels as synthetic extracellular matrices for three- dimensional cell culture
Synthetic hydrogels that mimic the natural extracellular matrix in the biophysical and biochemical cues it provides to cells are in high demand, however the cell phenotypes as they are observed in vivo in numerous cases have yet to be attained.
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Compiling and Refining Environmental and Economic Accounts (CREAA)
CREEA is a FP7 project on compiling and refining environmental and economic accounts. The project runs from April 2011 to March 2014.
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Start je studie
Op deze pagina vind je de belangrijkste zaken waar je als student van de Universiteit Leiden mee te maken hebt.
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Online Course Risk in Modern Society
Risk has become one of the defining features of modern society. This course examines various types of safety and security risks, and how these are perceived and dealt with in a wide array of professional and academic fields, ranging from criminology, counter-terrorism and cyber security, to philosophy,…
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Voor professionals
De faculteit biedt verschillende mogelijkheden om naast je werk jouw kennis te verdiepen en te ontwikkelen. Binnen de thema's van de faculteit, of in jouw eigen werkveld als duale promovendus, word je onder goede begeleiding geholpen een volgende stap in jouw carrière te zetten.
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Masters
Wil je een masteropleiding volgen aan een Nederlandse universiteit van wereldklasse? Dan kies je voor een master aan de Universiteit Leiden met topkwaliteit onderwijs en uitstekende carrièreperspectieven. Een universiteit die past bij wie je bent en waar je jezelf kunt zijn. Ontdek het in de gezelligste…
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Voorlichtingsactiviteiten
Om de juiste master te kiezen kun je je op verschillende manieren oriënteren. Twijfel je nog of weet je al welke richting je op wilt? De Universiteit Leiden heeft voor elke fase een voorlichtingsactiviteit om je kennis te laten maken met onze masteropleidingen.
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Geometry and arithmetic of del Pezzo surfaces of degree 1
This thesis contains results on the arithmetic and geometry of del Pezzo surfaces of degree 1.In Chapter 1 we give the necessary background, assuming the reader is familiar with algebraic geometry.
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Control of early plant development by light quality
This thesis describes how different colours of light affect various aspects of the growth and development of Arabidopsis and tomato plants.
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Translational Symmetry Breaking in Holographic Strange Metals
In this thesis, we have used numerical approaches to study the effects of translational symmetry breaking on strange metallic systems as realised by the holographic duality.
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Patterns in natural systems
Promotor: A. Doelman, Co-promotores: P.J.A. van Heijster; A. Zagaris
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Evolutionary diversification and historical biogeography of Orchidaceae in Central America with emphasis on Costa Rica and Panama
In this thesis, I targeted the orchid genus Lepanthes, one of the six genera of angiosperms that surpasses 1,000 species in the Neotropics, as a study model to investigate the evolutionary processes that promoted species diversifications.
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Profinite groups with a rational probabilistic zeta function
Promotores: H.W. Lenstra, A. Lucchini
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Sound Investigation: Effects of noise on marine animals across trophic levels
Anthropogenic noise has been shown to affect marine animals in various ways, this may have fitness consequences at individual and population level. This thesis aims to increase insight into the quantification of sound-induced behavioural responses that are relevant to fitness, and into factors that…
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Evolutionary adaptability of β-lactamase: a study of inhibitor susceptibility in various model systems
β-Lactamases are enzymes that can break down β-lactam substrates, such as antibiotics, preventing the use of these antibiotics for the treatment of various infectious diseases. However, some compounds, β-lactamase inhibitors, can block these enzymes allowing for possible treatments using a combination…
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Multi-omics studies of the control of growth and antibiotic production of Streptomyces
Actinobacteria are Gram-positive bacteria that have a complex multicellular life cycle and are well known for their ability to produce a wide range of bioactive natural products (NPs).
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Positive representations of algebras of continuous functions
If X is a locally compact Hausdorff space, then a representation of the complex C* algebra C_0(X) on a Hilbert space $H$ is given by a spectral measure that takes its values in the orthogonal projections on $H$.
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Multiscale mathematical biology of cell-extracellular matrix interactions during morphogenesis
During embryonic growth, cells proliferate, differentiate, and collectively migrate to form different tissues at the right position and time in the body.
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Galois representations of elliptic curves and abelian entanglements
Prof.dr. P. Stevenhagen, Prof.dr. K. Belabas (Universite Bordeaux I)
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Uncovering the ingredients for planet formation
This thesis discusses the physical and chemical processes than influence the composition of forming planets.
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Volatile compounds from Actinobacteria as mediators of microbial interactions
Streptomyces are bacteria abundant in soil that participate in diverse and complex interactions. These bacteria are the main producers of the antibiotics we currently use in the clinic.
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Expanding the coverage of ecosystem services in life cycle assessment: an interdisciplinary venture
To contribute to the body of knowledge aiming at a better coverage of ecosystem service assessment in LCA studies, this thesis dives into the challenges of incorporating existing ecosystem service methods within the impact assessment phase of the conventional LCA framework.
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Dynamics and radiation from tidal disruption events
When a star gets too close to a supermassive black hole, it is torn apart by strong tidal forces in a tidal disruption event (TDE).
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Systems microscopy to unravel cellular stress response signalling in drug induced liver injury
Promotor: B. van de Water
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The mechanical genome : inquiries into the mechanical function of genetic information
The four possible segments A, T, C and G that link together to form DNA molecules, and with their ordering encode genetic information, are not only different in name, but also in their physical and chemical properties.
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Massively collaborative machine learning
Promotor: J. N. Kok, Co-promotor: A. J. Knobbe
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Glucocerebrosidase and glycolipids: In and beyond the lysosome
The lysosomal β-glucosidase named glucocerebrosidase (GCase) is a retaining β-glucosidase that hydrolyzes the glycosphingolipid glucosylceramide (GlcCer) to ceramide and glucose at acid pH.
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Interactions from lipid membrane deformations
Biological cells, the basic building blocks of all life forms, are surrounded by a lipid membrane. More than half of the membrane is occupied by membrane proteins, which can regulate the cell functionality through specific arrangements.
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Using commitment to improve environmental quality
Promotores: E. van Dijk, G.R. de Snoo. Co-promotor: H. Staats
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The origins of friction and the growth of graphene, investigated at the atomic scale
Promotor: J.W.M. Frenken
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In vitro investigation of the photoprotection mechanism of Light Harvesting Complex II
Solar energy is used by photosynthetic organisms to drive energy required cellular processes. Is absorbed by two groups of pigments, located in the LHCs.
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Methods and Tools for Mining Multivariate Time Series
Mining time series is a machine learning subfield that focuses on a particular data structure, where variables are measured over (short or long) periods of time.
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Giant barrel sponges in diverse habitats: a story about the metabolome
Marine sponges are important members of reef ecosystems, as they play ecological roles that are essential for the health of the reef.
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Multi-dimensional feature and data mining
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.
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Regulation of the arabidopsis AGC kinase PINOID by PDK1 and the microtubule cytoskeleton
Plants, are sessile organisms, have developed strategies to adapt to changes in their environment, in part by altering their growth and development.
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Evaluation of the zebrafish embryo as an alternative model for hepatotoxicity testing
Promotor: Prof.dr. B. van de Water, Co-promotores: L.T.M. van der Ven, A.S. Kienhuis
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Resolving gas-phase metallicity in galaxies
Galaxies are environments where gas coalesces, cools, and is converted into stars. However, it remains unclear the exact mechanisms through which galaxies acquire, redistribute and lose their gas.
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The flux and flow of data: connecting large datasets with machine learning in a drug discovery envirionment
This thesis focuses on data found in the field of computational drug discovery. New insight can be obtained by applying machine learning in various ways and in a variety of domains. Two studies delved into the application of proteochemometrics (PCM), a machine learning technique that can be used to…
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Constant Hijzen, Jelle van Buuren en Paul Abels over de sleepwet
Constant Hijzen, universitair docent aan het Institute of Security and Global Affairs (ISGA), sprak in het NRC over de Wet op de inlichtingen- en veiligheidsdiensten. In de column ‘Twistgesprek’ van het NRC voert Hijzen een schriftelijk gesprek met de directeur van Bits for Freedom, Hans de Zwart, over…
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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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Random walks on Arakelov class groups
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.
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Postdoc position for project Fair Educational Assessment in the Age of AI (FAIR-ASSESS)
Governance and Global Affairs, Instituut Bestuurskunde
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Postdoctoral Researcher on the Adaptive Capacities of States to Transboundary Crises
Governance and Global Affairs, Instituut Bestuurskunde
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Wetenschaps- en onderwijsbeleid
De YAL laat zich horen over beleidskwesties.
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Evolution of Molecular Resistance to Snake Venom α-Neurotoxins in Vertebrates
We have examined sequences from the ligand-binding domain of the nicotinic acetyl choline receptor (nAChR) in 148 vertebrate species. We are in interested in this receptor because the α-neurotoxins of many venomous snakes binds to this receptor in its location at the neuromuscular junction in all ve…