A common method to solve expensive function evaluation problem is using Bayesian Global Optimization, instead of Evolutionary Algorithms.

Promotor: K.E. Schalm, Co-promotor: S.S. Lee

Making a dynamic substance stock model in order to conduct scenario analyses and make forecasts.

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.

The focus of this thesis is how stars like our Sun and planets like Jupiter, Saturn, and Earth are formed.

Stellar feedback is a crucial ingredient in the evolution of galaxies.

Promotores: Prof.dr. G.A. van der Marel, M. van Heel

Promotor: W. Jiskoot, Co-promotor: A. Hawe

Promotor: G.A. van der Marel, Co-promotor: J.D.C. Codée

Promotor: Prof.dr. E. F. van Dishoeck

The field of exoplanet research is rapidly advancing through the development of new technology, observing techniques, and post-processing methods.

Of all the mass in our Universe, 80% is thought to consist of a hypothetical and invisible substance called dark matter (DM).

Promotores: W. Jiskoot, F. Ossendorp

Promotor: S.M. Verduyn Lunel

By growing in a soil plants change the biotic and abiotic properties of the soil in which they grow.

Promotor: H.V.J. Linnartz

Promotor: Prof.dr. A. P. IJzerman, Co-Promotor: L.H. Heitman

This thesis provides explicit expressions for the density functions of absolutely continuous invariant measures for general families of interval maps, that include random maps and infinite measure transformations, not necessarily number systems.

A New Technology-Based Firm (NTBF) is a significant enabler of job creation and a driver of the economy through stimulating innovation.

Promotie

Op 7 december 2021 verdedigde Georgina Kuipers het proefschrift 'Beschadigd vertrouwen'. Het promotieonderzoek is begeleid door prof.mr. W. den Ouden en prof.dr. M.A. van der Steen (EUR).

Noord-Koreaanse strafkampen doen niet onder voor nazikampen. Maar zolang het land economisch geïsoleerd blijft, halen internationale reprimandes niets uit, schrijft Noord-Koreadeskundige Remco Breuker in de opiniebijlage van de NRC op 21 februari. Breuker bepleit invloed via de mijnindustrie.

Zeven Noord-Koreaanse vluchtelingen, die allen hoge functies bekleedden binnen het regime, onthullen hoe het er werkelijk aan toe gaat aan de top. Dat doen zij op een conferentie van de Universiteit Leiden op 17 en 18 september.

How can mega sand nourishments, such as the Sand Motor, be designed and managed for optimal ecosystem services provision ?

Leidse Korea-experts doen onderzoek naar eeuwenoude tradities en moderne leefgewoonten van Korea en Azië door de cultuur, geschiedenis en taal intensief te bestuderen.

Hybrid zones occur where two species meet and produce offspring (hybrids). Typically, hybrids show a considerable reduction in fitness. In this thesis two hybrid zones are treated.

Het Instituut voor Geschiedenis feliciteert Mirjam de Bruijn met het verkrijgen van een VICI-subsidie voor het onderzoek 'Connecting in Times of Duress: Understanding Communication and Conflict in Middle Africa’s Mobile Margins.'

Promotie

Promotie

In this thesis, the discovery and optimization is described of chemical tools to study the N-acylethanolamine (NAE) biosynthetic pathway.

Whilst government’s ability to design ‘context-specific’ regional innovation policy is generally assumed to depend on the region’s decision-making power, the aim of this study is to investigate how regional government matters. In order to open up the black box of policy design, the study develops a…

What is the environmental impact of different waste collection systems across Europe? How can the collection be improved when considering collection, sorting, and treatment, as well as use options for secondary materials?

In the last decade, the redox interconversion between metal thiolate and disulfide compounds has been extensively investigated for copper, but not for other transition metal ions.

From colonial times through to the present day, large numbers of Javanese have left their homes to settle in other parts of Indonesia or much further afield. Frequently this dispersion was forced, often with traumatic results.

Astronomical observations of cold regions in the universe show a rich inventory of ices. Part of these ices may end up on planets like our own, but in that journey they will be exposed to considerable amounts of radiation.

Promotor: Prof.dr. B.R. Katzy, Prof.dr. H.J. van den Herik, Prof.dr. G.H. Baltes (University of Applied Sciences Konstanz)

Less than 1 in 10 drug candidates that enter phase 1 clinical trials actually gets approved for human use.

Promotor: Prof.dr. T. Schmidt, Co-Promotor: S.J.T. van Noort

De Amerikaanse president Donald Trump is al aangekomen in Singapore waar de nucleaire top plaatsvindt. Hij zal in gesprek gaan met de Noord-Koreaanse leider Kim Jong-un. Maar wat kunnen we eigenlijk verwachten van deze historische gebeurtenis? RTL Nieuws sprak met Remco Breuker, hoogleraar Koreastudies…

This report investigates the different approaches in the authorization process of GMOs for commercial use in the European Union and the United States of America. Three main aspects are considered and analyzed as potential causes of differences in the authorization process of GMOs for commercial use.…

What are the life-cycle environmental impacts and risks to human health and ecosystems of a III-V/Si PV system? How can these be expected to change when the system is deployed at industrial scale? What are the most favourable recycling scenarios?

CML-IA is a database that contains characterisation factors for life cycle impact assessment (LCIA) and is easily read by the CMLCA software program.

In this project of the Center for Public Values & Ethics (CPVE) ongoing research is conducted on the history of advice to Dutch central government by so-called State committees from 1814 to 2014. State committees have been installed by Dutch central government since 1814 to provide expert advice, research…

What happens to electrical waves that have to cross gaps in insulation material around nerves in the human body

Dit is een vergelijkende studie naar het proces van omzetting of herroeping van vrijheidsbeperkende sancties in 10 Europese landen.

What are trait-trait relationships in wetlands? To what extent the so-called leaf economics traits deviate from terrestrial ecosystems? How traits specific to wetland plant relate to plant strategies? What’s the relationship between wetland plant traits to the ecosystem functioning (e.g. productivity,…

Wil je een volledige academische opleiding? Dan ga je na je bachelor door met een masteropleiding. Met een masterdiploma op zak heb je meer kans op een baan op academisch niveau. Na afronding krijg je de titel Master of Arts (MA).

When you have decided to participate in a Summer School of Leiden University, there are some matters you need to know before arrival. Please take a few minutes to read through the information here to find out what you can do from your side to smooth the process.

How to make a quantitative assessment of the relative contribution to toxicity of ions and particles? Is the toxicity of nanoparticles related to their size or shape? Which physicochemical property of nanoparticles is an appropriate dose metric of nanoparticles?

Het Expertisebureau Diversiteit en Inclusie staat in nauw contact met verschillende studenten- en medewerkersnetwerken op het gebied van diversiteit en inclusie.