Multicellular giant algae Chara species have been widely used in physiological studies for decades.

In this thesis, classes of strongly interacting quantum field theories, have been studied.

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’.

Niels van Willigen (Institute of Political Science, Leiden University) puts Dutch participation in UN peacekeeping into an historical context. He analyses the reasons for the Dutch withdrawal from the 1990s onwards, and explores the obstacles and opportunities for a structural return. Van Willigen argues…

Optical cavities are useful tools to enhance the interaction between light and matter, which is important to make good quantum emitters. However, it turns out that the cavities themselves (without any quantum emitters) are already interesting objects to study.

This handbook is aimed at a wide readership interested in developing an understanding of the political, economic, and social complexity of Eastern Europe. It covers Central Europe, the Baltic republics, South Eastern Europe, and the Western Balkans, as well as all the countries of the former Soviet…

Citizens’s attitudes towards trade are not only about the (perceived) economic effect. Commerce also has a variety of security implications. Employing an original experiment, political scientists Matthew DiGiuseppe (Leiden University) and Katja Kleinberg (Binghamton University) demonstrate that security…

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

Promotor: J.G.E.M.Fraaije, Co-promotor: A. Kros

Is there a causal mechanism underlying the decision to attack another country when on the brink of war? If so, does this mechanism differ between regime-types? Political scientist Femke Bakker (Leiden University) addresses this question from a political psychological and comparative perspective and…

How do parliamentarians secure their political future? Are their activities in the legislature connected to their place on the candidate list from one election to the next? Political scientists Tom Louwerse and Cynthia van Vonno examine the Dutch case. Their main finding is that speaking in the plenary…

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

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.

On the 3rd of April, Sebastiaan van der Lubben successfully defended a doctoral thesis. The Leiden University Centre for Linguistics congratulates Sebastiaan on this achievement!

This thesis examines silicon pore optics (SPO), a technology that exploits silicon wafers from the semiconductor industry to create extremely high quality X-ray optics, by studying its manufacturing process, applications, and prospects.

This thesis presents the first synthetic peptides ADP-ribosylated on serine, threonine, tyrosine, arginine and cysteine.

The 9th Network Europe Conference in Edinburgh was held at June 2017 in Edinburgh and organized by the Europa Institut Zurich. The contributions of the conference are now published.

Alexander West defended his thesis on 20 May 2021

This book is witness to Hendrik Vanden Abeele’s research into the development, construction and creation of a present-day performance practice of late medieval plainchant, based partly on his work with the Belgian chant group Psallentes.

This dissertation addresses the different use of the same philosophical model: immanent teleology. In this work Aristotle, the founder of the study of final causes, is put in relation with the modern French evolutionary thinker Henri Bergson, the philosopher of time. The dissertation tackles the two…

International organisations face the challenge of balancing conflicting norms. For instance the norms governing traditional UN peacekeeping missions and the the norm of international criminal accountability. Political scientists Tom Buitelaar (Leiden University) and Gisela Hirschmann (Leiden University)…

Heightened activation of the striatum that adolescents show in response to reward is often associated with risk-taking and negative health consequences. This article in Nature Communications investigates a potential positive side of this heightened activation. It shows that the activity peak in late…

Do you have a creative and curious attitude towards scientific research? Do the creation of media and use of technology drive your research interests? Could you be a researcher who challenges scientific practice and pushes its boundaries? Then the Media Technology MSc programme at Leiden University…

Quantum annealing belongs to a family of quantum optimization algorithms designed to solve combinatorial optimization problems using programmable quantum hardware. In this thesis, various methods are developed and tested to understand how to formulate combinatorial optimization problems for quantum…

In 2017, In 2017 we published over 70 papers, appointed two new professors, researched microplastic contamination in European beach sediment and modelled future energy demand. We awarded six PhDs and taught students from all over the world how to contribute to sustainability. We wish you a pleasant…

This thesis has shed light on some of the ways in which the local electrolyte composition can differ from the bulk and how these changes in the local reaction environment can determine the activity and/or selectivity of two important electrocatalytic reactions, namely, electrochemical CO2 reduction…

This thesis consists of five chapters on how to construct prediction sets for different types of data and models in a parametric or nonparametric Bayesian paradigm.

This article is aimed to shed light on the Swahili-‘Ajam ī manuscripts, focusing on the major Swahili classical genre: the

In November, Springer published a book on The Future of Drone Use, edited by dr. Bart Custers, associate professor at eLaw, the Center for Law and Digital Technologies of Leiden University.

The thesis introduces three methods for high-dimensional prediction problems in the biomedical field. The methods make use of empirical and variational Bayes in the estimation.

Political Scientist Katharina Natter (Leiden University) advances theory-building on immigration beyond the liberal state and demonstrates how immigration politics can provide valuable insights into the inner workings of political regimes. Connecting scholarship from comparative politics, international…

Structural variants (SVs) are the hidden architecture of the human genome, and are critical for us to understand diseases, evolution, and so on.

When we think of politics, we tend to think of adversary, antagonism, polarisation, a struggle for power. But politics should serve positive purposes, as well. Political psychologist and meditation teacher Femke Bakker (Leiden University) thinks that positive politics is first and foremost about tolerance.…

Promotor: J.W.M. Frenken, Co-Promotor: R. Felici

New policies, institutional configurations, and state-market relations are emerging outside of East Asia, as new developmental states move beyond the historical experience of East Asian development. Yet, the ‘developmental state’ is still relevant. This book, edited by Jewellord Nem Singh (Institute…

On the 20th of April, Chams Benoît Bernard successfully defended a doctoral thesis. The Leiden University Centre for Linguistics congratulates Chams on this achievement!

The second major collection of papers from the Bridging the Unbridgeable project.

This thesis discusses the discovery potential of Intensity Frontier experiments.

Analecta Praehistorica Leidensia is the annual journal of the Faculty of Archaeology (formerly the Institute of Prehistory), Leiden University.

Promotores: Prof.dr. D. Bouwmeester, Prof.dr. A. Fiore (TU Eindhoven)

Three at the same time: a ligation strategy combining tetrazine–norbornene cycloaddition, Staudinger–Bertozzi ligation, and copper(I)-catalyzed click reaction was used to label the three catalytic activities of the proteasome simultaneously in a single experiment. The orthogonality of the three ligation…

Why did India develop a strong military partnership with the state of Irael, after having ignored it for 42 years? How could both countries develop defense ties in spite of limited political leadership involvement? Finally, what are the prospects for defense relations as India grows to become one of…

This thesis is divided into two parts. In Part I we study metastability properties of queue-based random-access protocols for wireless networks. The network is modeledas a bipartite graph whose edges represent interference constraints. In Part II we study spectra of inhomogeneous Erdős-Rényi random…

Government impartiality is considered a core feature of quality of government, and one that leads to favorable macro‐level outcomes. We have limited knowledge, however, of how impartiality affects citizens' perceptions of public service quality. In particular, we do not know how the impacts of impartiality…

This thesis consists of three chapters, the first two of which concern division points of elements of the multiplicative group of a number field.

With the rise of multi-drug resistant bacterial pathogens, the possibility of a post-antibiotic world is quickly becoming reality.

The author of this dissertation proposes a new theory of explanation that combines ideas about interventions, deduction, and contrastive explanation.

Promotor: M. Ubbink, Co-promotor: G. Siegal

Collaboration is increasingly common among teachers in schools. As such, teacher education should prepare prospective teachers to effectively interact with other teachers in different types of communities or groups.

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