Promotor: Prof.dr. M. de Jong

Learning about My meaningful Way through life and profession.

Leiden My Way is een co-curriculair persoonlijk ontwikkelprogramma uitgevoerd aan de Faculteit der Sociale Wetenschappen.

Kunst en vrije tijd, Kunst en vrije tijd

The high velocity tail of the total velocity distribution of stars provides essential insight into fundamental properties of the Galaxy.

The Sun and all the stars in the night sky reside in the Milky Way galaxy. In the at-rest reference frame of the Galaxy, typical stars travel with velocities of about 100-200 kilometres per second.

Promotor: P. T. de Zeeuw, Co-promotor: N. Neumayer; G. van de Ven

Promotor: K.H. Kuijken

Op 29 april 2020 verdedigde Beth Van Schaack haar proefschrift 'Imagining Justice for Syria: Water Always Finds Its Way'. Het promotieonderzoek is begeleid door promotor prof.dr. C. Stahn.

Promotor: Prof.dr. H. J. A. Röttgering, Co-Promotor: M. Haverkorn

Do sustainability values play a role in motivating people to act for biodiversity in successful projects and in successful leadership action? And how could these values be incorporated in current economic valuation methods?

Promotor: Prof.dr. A.G.G.M. Tielens

The formation of stars and planets happens over multiple scales, which can interact. In particular, planet formation happens in the dense, complex environment of star forming regions.

Supervisor: S.F. Portegies Zwart Co-Supervisor: A.G.A. Brown

A brief review essay on some of the work that has been recently published in the emergent field of digital ethnography.

Promotores: G. Persoon, R. Schefold

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

Promotor: Prof.dr. P. Stevenhagen, Co-promotor: B. de Smit

We show that Kirchhoff ’s law of conservation holds for non-commutative graph flows if and only if the graph is planar. We generalize the theory of (Euclidean) lattices to infinite dimension and consider the ring of algebraic integers as such a lattice.

Promotor: J. Zaanen

Promotores: G.R. de Snoo, W.T. de Groot, Co-promotor: C.J.M. Musters

For centuries astronomers studied the Universe by collecting light. Nowadays, we are living in times of great technological advancements, which allow us to explore our Universe in a new way - though gravitational wave radiation.

In this thesis, the role of plant-mediated soil legacy effects in shaping aboveground plant-insect interactions was investigated.

Understanding how galaxies form, interact, and evolve comes largely from comparing theory predictions with observational data. Numerical simulations of galaxies provide the most accurate approach to testing the theory, as they follow the non-linear evolution of gas and dark matter in great detail and…

Promotores: Prof.dr. H Lenstra, Prof.dr. A Facchini (Padova University)

In het programma Time Warp brengt bioloog Freek Vonk de gevaarlijkste gifslangen ter wereld voor de camera. Zijn doel is niet het tonen alleen, maar vooral het melken van het slangengif ten behoeve van zijn promotieonderzoek. Vrijdag vertelde hij over zijn fascinatie voor slangen in 'De Wereld Draait…

The project falls in the context of the EU Thematic Strategy on the Sustainable Use of Natural Resources (COM(2005)670). The Institute for Environment and Resources (IES) of the Joint Research Centre (JRC) has developed three sets of decoupling indicators. Such indicators require the definition of a…

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…

In the early universe, the dynamics of the Higgs field can give rise to many interesting phenomena.

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…

The research presented in this thesis concerns one of the most important questions in software engineering of our time: how can we make sure that software is free from memory safety bugs?

This thesis is comprised of three chapters covering the theme of studying semistable varieties by looking at their dual combinatorial objects.

Kunst en vrije tijd, Kunst en vrije tijd

The marine shipping industry is one of the strongest emitters of nitrogen oxides (NOx), a pollutant detrimental to ecology and human health. Over the last 20 years, the pollution produced by power plants, the industry sector, and cars has been decreasing.

Promotor: Prof.dr. P. Stevenhagen

Op vrijdagavond 17 september is de Leidse astronoom Joe Callingham te zien in een nieuwe serie op Discovery. ‘Killers of The Cosmos’ gaat over krachten in het heelal die ons bestaan kunnen bedreigen. Asteroïden, kosmisch puin, elektromagnetische wapens… De show behandelt elke bedreiging als potentiële…

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.

Promotor: Prof.dr. G.P. van Wezel

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

Promotor: J.M. van Ruitenbeek, Co-Promotor: S.J. van der Molen

Artful Mathematics: The Heritage of M. C. Escher

Jasmina Mačkić, universitair docent aan het Europa Instituut, presenteerde haar onderzoek tijdens ‘The Dissident’, een live talk show die regelmatig wordt georganiseerd door World-Talks, op 24 mei 2018. De bijeenkomst draaide om de Nigeriaanse mensenrechtenactivist Justus Ijeoma, de oprichter van de…

Wat is de invloed van de Internationale Verdragen ICCPR en ICESCR? Hoe kan hun toekomstige rol in de bescherming van de mensenrechten verder worden verbeterd? Dit is een kleine greep uit de vragen die worden gesteld tijdens de conferentie ter ere van de 50ste verjaardag van het ICCPR en ICESCR.

In deep reinforcement learning, searching and learning techniques are two important components. They can be used independently and in combination to deal with different problems in AI, and have achieved impressive results in game playing and robotics. These results have inspired research into artificial…

Promotor: Prof.dr. D. Bouwmeester

The external tissues of plants and animals are colonized by microbial communities termed microbiota. When organisms are exposed to environmental pollutants, these substances will therefore encounter microbiota at the exposure interface.

Promotor: M.K. Richardson, Co-Promotor: F. Witte

Despite being the object of intense study, embryonic development has been difficult to model due to a number of reasons. First, complex tissues can be comprised of many cell types, of which we probably only know a subset.

Pharmaceutical companies, governments and the general public have become increasingly aware that animal models used in drug testing lack vital aspects to serve as an accurate representation of human biology. As models of the human body should become more physiologically relevant, animal models no longer…

Circumstellar discs are the reservoirs of gas and dust that surround young stars and have the potential to become planetary systems.