46 zoekresultaten voor “hoe scheme” in de Publieke website
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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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Restoration of ditch bank plant diversity : the interaction between spatiotemporal patterns and agri-environmental management
Promotor: G.R. de Snoo, Co-promotor: C.J.M. Muster
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On the Galois closure of commutative algebras
Promotores: H.W. Lenstra, B. Erez, Co-promotor: L. Taelman
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Two-Prover Bit-Commitments: Classical, Quantum and Non-Signaling
This thesis considers multi-prover commitment schemes whose security is based on restrictions on the communication between the provers.
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Approach to Markov Operators on Spaces of Measures by means of equicontinuity
The subject of this thesis, ‘Approach to Markov Operators on Spaces of Measures by Means of Equicontinuity’, combines an analytical and probabilistic approach to Markov operators.
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CERA - Certification of Raw Materials
CERA (CErtification of RAw Materials) is a four-year project that will develop a standardized certification scheme ensuring environmental, social and economic sustainability in extraction, processing, trading and manufacturing of all mineral raw materials. It will guarantee traceability of certified…
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Opportunity and Problem in Context (OPiC). A framework for environmental management in developing countries
Promotor: W.T. de Groot
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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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Guiding evolutionary search towards innovative solutions
Promotors: Prof.dr. T.H.W. Bäck, Prof.dr. B. Sendhoff (Technische Universität Darmstadt)
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Postcolonial Displacements: Migration, Narratives and Place-making
Postcolonial Displacements onderzoekt de verschillende manieren waarop migratie in Zuid-Azië bijdraagt aan het verbeelden, ondermijnen, herdefiniëren en ter discussie stellen van territoria, naties en gemeenschappen. Het project richt zich op de betwiste randgebieden van het politiek verdeelde Zuid-Aziatische…
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Néron models in high dimension: nodal curves, Jacobians and tame base change
We describe certain birational modifications of nodal relative curves over a regular base of arbitrary dimension.
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Knowledge extraction in the quantum random-oracle model
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’.
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Exploring deep learning for multimodal understanding
This thesis mainly focuses on multimodal understanding and Visual Question Answering (VQA) via deep learning methods. For technical contributions, this thesis first focuses on improving multimodal fusion schemes via multi-stage vision-language interactions.
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Computational aspects of class group actions and applications to post-quantum cryptography
Most of current public-key cryptography is considered insecure against attacks from sufficiently powerful quantum computers. Post-quantum cryptography studies methods to secure information resistant against such attacks. One proposal is isogeny-based cryptography, which bases its security on computational…
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Links between cohomology and arithmetic
Promotor: S.J. Edixhoven
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Arithmetic of affine del Pezzo surfaces
In this thesis integral points on affine del Pezzo surfaces are studied.
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Engagement of citizens and public professionals in the co-production of public services
The idea of citizens and public professionals collaborating to provide public services has widely spread in several countries around the globe. Co-production is often presented as the go-to solution for challenges like a legitimacy crisis of both the government and the market, and financial concerns.…
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Impact of nitrogen fertilization on the soil microbiome and greenhouse gas emission
The use of N fertilizers has increased worldwide in the past century. While this increased input of N has increased food productivity, it has also contributed to decreases in biodiversity, soil quality and environmental health, including increases in greenhouse gas emissions.
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Quantum local asymptotic normality and other questions of quantum statistics
Promotor: R. Gill, Co-promotor: P. Massart
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Unconditionally secure cryptographic protocols from coding-theoretic primitives
This dissertation presents new cryptographic protocols, which can be divided into two families.
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Dual Complexes of Semistable Varieties
This thesis is comprised of three chapters covering the theme of studying semistable varieties by looking at their dual combinatorial objects.
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Real-time tomographic reconstruction
With tomography it is possible to reconstruct the interior of an object without destroying.
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The mixed Ax-Lindemann theorem and its applications to the Zilber-Pink conjecture
Promotores: Prof.dr. S.J. Edixhoven, Prof.dr. E. Ullmo (University Paris-Sud)
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Painting with starlight : optical techniques for the high-contrast imaging of exoplanets
This thesis describes the development and validation of new high-contrast imaging techniques, with the ultimate goal of enabling the next generation of instruments for ELT-class telescopes to directly image Earth-like extra-solar planets orbiting around nearby stars.
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Corpora Non Agunt Nisi Fixata: Ligand Receptor Binding Kinetics in G Protein-Coupled Receptors
The present thesis focuses on the pharmacological concept of drug-target interaction, which dates back to the beginning of modern pharmacology.
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Does knowledge of environmental performance change farmer's behaviour?
Does knowledge of environmental performance change farmer's behaviour?
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The Regional Network on the Synergy between the Convention on Biological Diversity and the UN Convention to Combat Desertification
Description of The Regional Network on the Synergy between the Convention on Biological Diversity and the UN Convention to Combat Desertification.
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Afrikaans onderzoek voorkomt zorgkosten en welvaartsziekten
Van oudsher zoeken gezondheidswerkers naar manieren om ziektes onder kwetsbare bevolkingsgroepen te bestrijden. Inmiddels blijkt hoe dit onderzoek ook welvarender landen ten goede komt. Afrikaanse worminfecties en innovatieve thermometers leren Leidse onderzoekers hoe je welvaartsziekten kan bestrijden…
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Studieprogramma
In deze masterspecialisatie volg je naast de Nederlandstalige kerncursus en scriptieseminar een aantal Engelstalige vakken en keuzeseminars. In het programma is naast de politiekwetenschappelijke inhoud ook aandacht voor onderzoeksvaardigheden.
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PhD position in Social Anthropology
Sociale Wetenschappen, Culturele Antropologie en Ontwikkelingssociologie
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Post-doctoral researcher (1.0 FTE; 24 months)
Governance and Global Affairs, Institute of Security and Global Affairs
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Assistant Professor in War Studies (1 fte)
Governance and Global Affairs, Institute of Security and Global Affairs, War, Peace and Justice
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Assistant Professor Crisis Governance (1 fte)
Governance and Global Affairs, Institute of Security and Global Affairs
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Full Professor (Chair) in International Institutional Law (Schermers Chair) (0,2 FTE)
Rechtsgeleerdheid, Instituut voor Publiekrecht, Grotius Centre for International Legal Studies
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2 Assistant Professors in Intelligence and Security (1 fte)
Governance and Global Affairs, Institute of Security and Global Affairs, Intelligence and Security
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Human-lion conflict around Nairobi National Park: Lion Population Structure, Diet, and Movement in a Semi-Fenced Park.
What is the population size and social structure in time and space? What is the lion diet and food preference in time and space? What is the home range (MCP and Kernel) and movement in time and space? What are human – lion conflict and responses of lions to traditional herding in time and space? What…
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Postdoctoral researcher in African Studies
Afrika-Studiecentrum Leiden
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Research Memoranda
Onderzoekreeks van de Afdeling Economie van de Universiteit Leiden op het raakvlak van economie en recht.
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Acht Meijersprijzen uitgereikt
Vrijdag 12 januari 2018 zijn de jaarlijkse Meijersprijzen uitgereikt voor het beste gepubliceerde artikel, per facultair onderzoeksprogramma, van onderzoekers in de pre-promotiefase. De winnaars ontvingen een certificaat en een geldbedrag om te besteden aan hun onderzoek.
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Interviews met onze alumni
Als afgestudeerde van de faculteit Geesteswetenschappen zijn er tal van mogelijkheden. Altijd al meer willen weten over de sectoren en banen waarin alumni van Geesteswetenschappen zoal terechtkomen? Klik op de naam van de alumnus/alumna om hun verhaal te lezen!
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Research Seminar Series
For questions and suggestions regarding the series, please contact prof. dr. Olaf van Vliet or dr. Max van Lent
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Full Professor (Universitair Hoogleraar) of International Relations
Geesteswetenschappen
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Legal Analysis of Access to Old-Age Public Pension Benefits in Rwanda
Promotie
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Eregalerij 2018
Veel van onze medewerkers en studenten hebben het afgelopen jaar een prijs gewonnen, een mooie subsidie binnengehaald, of ze zijn vanwege hun kwaliteit benoemd in een academisch genootschap of maatschappelijk geconsulteerd vanwege hun specifieke expertise. Reden om hen op te nemen in onze Eregalerij…
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Voordrachten
Voordrachten in het kader van het onderzoeksproject Zelfredzaamheid en sociale bescherming over de levenscyclus (aug. 2017 – dec. 2023).
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Wetenschaps- en onderwijsbeleid
De YAL laat zich horen over beleidskwesties.