This study examines how European state administrations responded to transboundary crises over the past 30 years and the extent of their successful adaptation.

Promotor: W.Th.F. den Hollander Co-Promotor: F.M. Spieksma

On 21 September 2022 Arfiansyah successfully defended a doctoral thesis and graduated.

Recent years have seen a vibrant scholarship on health policy and politics. While much is now known about changes to health policies and institutions over time, this study finds that scholarship still lacks research on the linkages between health policies and health outcomes (Marmor & Wendt, 2012).…

In the wake of controversial disclosures of classified government information by WikiLeaks and Edward Snowden, questions about the democratic status of secret uses of political power are rarely far from the headlines. Despite an increase in initiatives aimed at enhancing government transparency – such…

In this article, Samir Negash, PhD candidate at the Institute of Public Administratation, discusses the discrepancy in European countries between the measured impact of immigration on the welfare state and how this impact is perceived by citizens.

All players on the world stage operate strategically in order to safeguard their interests. Political scientists at Leiden University cast light on this volatile interplay of forces. Their research helps voters, NGOs, governments and international organizations make smart choices in this complex and…

After decades in which autocracies were marginalised in most IOs, the rise of China, Russia’s increasingly autocratic turn, and the rising importance of powers such as hybrid regimes have produced a new reality in which various non-liberal states are increasingly present and assertive in IOs. The strategies,…

This dissertations studies state-society relations in 1930s Turkey, focusing on the anti-veiling campaigns in the mid-1930s and aiming to understand the ways in which the Kemalist policies were received, interpreted, negotiated, compromised and/or resisted by various actors in the provinces.

Decentralized plug and play systems for energy production are the future picture of our society. Artificial photosynthetic systems are used for this purpose.

For a successful implementation of an educational reform, teachers need to regard the proposal as being practical. I used a modular, success-oriented approach to make a context-based reform practical for implemtentation in Duthc biology education. educational reform, modular, teachers, biology, success-oriented,…

Reconfigurations of Practice, Community and Authority in Contemporary Aceh

Latif Fauzi defended his thesis on 18 May 2021.

With the necessary measures, researchers restart their work in various laboratories. The Leiden Cell Observatory is one of the places where scientists resume their lab work.

Politically speaking, the Frisian coastal area constitutes a special case in late medieval Europe since it was not subject to an overlord as it withstood feudalization in the 13th century. Its many sub regions, which were dominated by elites of small noblemen and freeholders, long time succeeded in…

This project aims to assess the risk of spread of antimicrobial resistance genes in the environment derived from currently used synthetic biology approaches in the field of drug discovery.

In this article, the authors analyse two major factors that deepen informality, namely multipolar geopolitics and the rise of non-state actors.

A Vici grant and a Science-GROOT: scientists from the Institute of Biology Leiden have been awarded prestigious grants from the Dutch Research Council (NWO). From investigating bacteria without cell walls to harnessing plants with the help of microorganisms.

From the 11th of May Ewa Snaar-Jagalska has been appointed Professor in the field of cellular tumor biology within the Faculty of Science at the Institute of Biology Leiden. Her research focuses on the cellular tumor biology and human cancer modeling in zebrafish

A bacterium hiding from the immune system and picking up bits of DNA from its environment. The result: gaining new traits, such as better protection against antibiotics. Fortunately, we have not found such a damning scenario yet. However, PhD student Renée Kapteijn did find the first clues, which…

The life of a fibroblast is heavy, but PhD student Julia Eckert makes it 19.5 times heavier, using the Large Diameter Centrifuge at the ESTEC space research centre in Noordwijk.

Ariane Briegel has been appointed Professor in the fìeld of Ultrastructural Biology within the Faculty of Science at the Institute of Biology from the 1st of December 2015. Her expertise is in using electron cryotomography to study how microbes sense and respond to their environment.

Mechanics play a larger role in blood vessel formation, and other developmental biology, than previously thought. Cells appear to respond to mechanical signals, such as pressure. Through the extracellular matrix, a network of fibrous proteins, cells can supposedly exchange those mechanical signals over…

Geneticist Hans Clevers will give the first Niko Tinbergen lecture new style on 10 December, which is all about stem cells. The young Leiden professors Ariane Briegel and Susana Chuva de Sousa Lopes talk about bacterial noses and the cultivation of egg cells in the lab in short introductory lectures…

State fragility and conflict continue to be among the most enduring development challenges of the 21st century. The consequences of fragility and conflict on individuals, States and the international community are profound. At the individual level, an estimated 2 billion people or a quarter of the world's…

Leiden researchers study the extent to which Asian citizens can invoke the rights that they have on paper. This knowledge helps them advise the different levels of government and NGOs on how to improve the lot of poor citizens in particular.

Antoaneta Dimitrova, Professor Comparative Governance at Leiden University, Honorata Mazepus, Assistant professor at Leiden University and Dimiter Toshkov, Associate Professor at Leiden University, together with three other authors researched which aspects of state capacity might contribute to opening…

During the 1980s and early 2000s, authors like Alex Schmid and Andrew Silke demonstrated the paucity of first-hand insights being used to study terrorism and the consequences this had for the reliability of the findings beings presented. But to what extent have these issues endured?

Biophysicist Rolf Harkes has developed a microscope to optically localize individual molecules in living cells. It improves monitoring of diseases like cancer and Parkinson’s at the cellular level. Defende PhD thesis on t13 January 2016.

In this article, Kuipers and Timmermans analyze the first lady's relationship with policy problems in the period 1945-2013.

Sophie Vériter explores a small state’s impact on EU security governance, a hard challenge means against big states in this policy area.

A discourse on international cyber norms has emerged ever since the United Nations Group of Governmental Experts on Developments in the Field of Information and Telecommunications in the Context of International Security (UN GGE) recommended eleven norms on responsible state behaviour in cyberspace.

On 16 June 2020, Andrea Varga defended her thesis 'Establishing State Responsibility in the Absence of Effective Government'. The doctoral research was supervised by Prof. N.J. Schrijver and Prof. F. Baetens (University of Oslo).

On 27 June 2019, Vid Prislan defended his thesis 'Domestic Courts in Investor-State Arbitration: Partners, Suspects, Competitors'. The doctoral research was supervised by Prof. dr. N.J. Schrijver.

Roel Wouters (24), a biology student at Leiden University, is a finalist in the election for UN youth delegate for Biodiversity and Food. The digital polls open for a week on Friday 22 October. Under-30s can vote for Roel at www.stemroel.nl.

State utilization of 'hukum adat' and its implication for the Indonesian rule of law

Chemist Roxanne Kieltyka has received an ERC Starting Grant of 2 million euros. In her lab, she creates gels that mimic the instructive material that supports cells in our body. With the grant, she aims to make these gels stiff and tough, and to create a bio-printed miniature heart ventricle.

Yi-Wen Cheng defended her thesis on 28 May 2015

This monograph, written by dr. Dennie Oude Nijhuis and published by Cambridge University Press, discusses the postwar development of the welfare state.

Microbial Sciences'contribution to the Development & Disease research theme is to perform world-class research to understand cellular morphogenesis, growth, development and virulence of microbes.

This dissertation contains four works during my PhD. Different biomaterials have been designed based on coiled-coil peptides. These biomaterials have a range of applications, inclusing drug delivery, cell sorting to cell-cell fusion.

Organisations such as the EU are of enormous benefit to the member states, but the inhabitants of the member states are often unaware of this. Leiden researchers investigate whether international organisations such as the EU or ASEAN are able to influence global politics.