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.

Promotor: Prof.dr. P. Stevenhagen, Jan-Hendrik Evertse, Co-promotor: Pascal Autissier

Collected Cases on EU Labour Law (eerste druk) is onlangs verschenen bij Eleven International Publishing.

Promotor: H.V.J. Linnartz

Promotores: R. Cramer, A.K. Lenstra, Co-Promotor: B.M.M. de Weger

Polycyclic aromatic hydrocarbons (PAHs) are the most abundant class of organic compounds in space. The PAH field evolves from the constant interaction between experimentalists, theorists, modellers and observers. While laboratory research and quantum chemical calculations together set up the molecular…

Promotor: A. Achúcarro, Co-Promotor: J.W. van Holten

This Thesis focuses on the design and synthesis of ADP-ribosylated compounds that can be applied in biological studies.

This thesis describes the role of pollution, specifically neonicotinoid insecticides, as an actor of the ongoing biodiversity decline.

Feedback van medestudenten op schrijfwerk is net zo leerzaam als die van docenten.

We consider the propagation of electrical signals through nerve fibres.

Building a Deep Cross-media Transfer Network to extract visual relations that relieve the problem of insufficient training data for visual tasks.

My PhD research is devoted to studies of the conjectural cluster-algebraic symmetry in the theory of topological string, which is the simplest, however already non-trivial sector in the theory of string.

In this thesis, we extend the concept of null models as canonical ensembles of multi-graphs with given constraints and present new metrics able to characterize real-world layered systems based on their correlation patterns.

The effects of anthropogenic noise on interactions between predators and their prey are still little understood.

What performance criteria does a new technology have to fulfill in order to be added to the list of future energy options and what constraints exist in terms of broad market penetration?

Shape and biological function are tightly connected. Physical descriptions are used to connect the shape of a biological system with its function.

This thesis deals with properties of Jacobians of genus two curves that cover elliptic curves.

Op 21 november 2018 verdedigde Lieke Kools haar proefschrift 'Essays on wealth, health, and data collection'. Het promotieonderzoek is begeleid door promotoren prof. dr. K.P. Goudswaard en prof. dr. C.L.J. Caminada.

In this thesis, topics relating to the optimization of high-throughput pipelines used for imaging are discussed. In particular, different levels of implementation, i.e., conceptual, software, and hardware, are discussed and the thesis outlines how advances on each level need to be made to make gains…

Promotor: Prof.dr. M.L. van Hecke, Co-Promotor: V. Vitelli

Op 20 januari 2022 verdedigde Marco Stam het proefschrift 'Essays on Welfare Benefits, Employment, and Crime'. Het promotieonderzoek is begeleid door prof.dr. M.G. Knoef.

Seizoen 2 van de Leiden Psychology Podcast is begonnen en we trappen af met een speciale Q&A met onze nieuwe hosts Aziza en Priya. In deze aflevering krijg je de kans om hen beter te leren kennen.

What is the effect of light at night on plant phenology and physiology, and how does this affect plant interactions with other species?

Bas Rietjens en zijn collega's onderzochten de oorlog tussen Rusland en Oekraïne en onderzochten deze veelvoud aan facetten en hun onderlinge verbanden.

Promotores: H.W. Lenstra, B. Erez, Co-promotor: L. Taelman

Promotor: A. Doelman, Co-promotor: M.F.E. de Jeu

Promotor: Jan van der Greef; Co-promotors: Mei Wang; Eduard van Wijk

January 23: Maptime University, Ineke van der Ham will speak at the next meet up of Maptime University, an interactive meeting for cartography enthusiasts of all skill levels.

Promotor: G.R. de Snoo

This thesis mainly extends the theory of positive operators on Riesz spaces to a setting of pre-Riesz spaces.

Promotor: C. W. J. Beenakker, Yu. V. Nazarov, Co-promotor: J. Tworzydlo

Rottgering

Promotor: Prof.dr. V. Icke, Co-Promotor: T.I. Madura

In some condensed matter systems, such as the surface of a 3D topological insulator, the electrons are effectively massless and we must necessarily use the massless Dirac equation to describe them.

An algorithm is discussed to compute the exponential representation of principal units in a finite extension field F of the p-adic rationals.

Promotor: Prof.dr. P.G.L. Klinkhamer, Co-Promotor: T.J. de Jong

This thesis aimed to investigate the impact of exposure dynamics, relative contributions of ENPs(particle) and ENPs(ion), and dosing regimens on the toxicity of ENPs varying in different physico-chemical properties, on the composition and functioning of soil microbial communities.

A management strategy has been developed for field margins to reduce pesticide drift to non-target areas and to promote biodiversity on arable land. To this end, 3 and 6 m wide strips along the edges of winter wheat, sugar beet and potato crops have been left unsprayed with herbicides and insecticides…

De masterspecialisatie Philosophical Perspectives on Politics and the Economy van de Universiteit Leiden was voorheen bekend onder de naam Philosophy, Politics and Economics.

Despite the history of studies on methanol formation from CO2, the dominant elementary reaction steps that constitute the chemical mechanism for this catalyzed process are not determined.

This thesis consists of three papers that are centered around the common theme of Hausdorff uo-Lebesgue topologies and convergence structures on vector lattices and on vector lattices and vector lattice algebras of order bounded operators.

In this thesis, rational points on K3 surfaces are studied. In the first part of Chapter 1 the Brauer group and the the Brauer-Manin obstruction are introduced.

Sound is everywhere in the marine environment and hearing is therefore a very important for stimuli for fish. They use sound for orientation and communication, during migration, aggregation and spawning, but also for detection of prey and predators.

Description of Effects of glufosinate-ammonium on off crop vegetation.

In this thesis we study the moduli space of genus g curves, and the differential forms that occur naturally on this moduli space.

‘Heel interessant’, vinden twee bachelorstudenten van de verhalen van Liesbeth van Vliet en Niki Antypa tijdens de Psychology Science Day. Toefje op de taart zijn de posterpresentaties over de bachelorsscripties, bewonderd en becommentarieerd door wetenschappers en medestudenten. Ook docenten en postdocs…

The key purpose of this project is to study tautological relations on the level of closed differential forms or even integral cochains (i.e. we don't take classes in cohomology).

The research described in this thesis has, using the zebrafish as a model system, shed new light on the intricate relationship between TB and DM2, in particular on the role of leptin, SHP-1 and glucocorticoids.

Heterogeneous catalysis is one of the fundamental processes of modern life, being common in industrial refinery and hydrogen vehicles, all the way to the living cell. The dissociation of H2 on Cu(111) is an important benchmark system for studying heterogeneous catalysis, with a large and varied amount…