The work presented in this thesis is based on ALMA surveys of protoplanetary disks in three star-forming regions: Lupus, OMC-2, and NGC 2024.

This recently released book takes a critical view of conceptual issues and practical problems that inevitably emerge when ‘excellence’ takes center stage in science systems in the Global South. What is ‘excellent science’? And how to recognize and assess it? After decades of inquiry and debate there…

Microscopic swimmers such as bacteria do not always swim alone. There are advantages to exchanging information and cooperating. Stefania Ketzetzi and colleagues now show in Nature Communications that human-made microswimmers, too, can cooperate.

From a meaningless block of plastic to an advanced component that contributes to the energy transition. The technicians and scientists of our faculty think it out in detail and make it a reality. This special project shows that they need each other.

On the 17th of January, Sarah Von Grebmer Zu Wolfsthurn successfully defended a doctoral thesis. The Leiden University Centre for Linguistics congratulates Sarah on this achievement!

The Leiden Institute of Advanced Computer Science (LIACS) aims on doing applied research with partners. You can be involved in our research, and in the knowledge transfer of our research results.

Papers in honour of Professor Annelou van Gijn

Democratic citizenship refers to the capacity and willingness of citizens to actively influence the functioning of state institutions. While considered a vital correlate of democratization and the rule of law, its largely western-oriented literature rarely studies the forms of democratic citizenship…

The group of Dr. Roxanne Kieltyka designs and synthesizes molecules that self-assemble into polymeric materials using specific non-covalent interactions. These substrates can be used for numerous applications in medicine ranging from disease detection to cell delivery depending on the (bio)molecular…

For optimization problems, it is often unclear how to choose the most appropriate optimization algorithm. As such, rigorous benchmarking practices are critical to ensure we can gain as much insight into the strengths and weaknesses of these types of algorithms.

Marieke Liem, Professor Social Resilience and Security at Leiden University, and Katharina Krüsselmann, PhD candidate at Leiden University and Manuel Eisner mapped the flow of homicide cases with the help of a systematic review.

Natural history collections provide invaluable sources for researchers with different disciplinary backgrounds, aspiring to study the geographical distribution of flora and fauna across the globe as well as other evolutionary processes.

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

Electoral Systems and Turnout: Evidence From a Regression Discontinuity Design. In this article, published on the website SAGE research methods, authors Jaroslaw Kantorowicz and Tobias M. Hlobil discuss how a Regression Discontinuity Design can be executed.

The youngest institute of the Faculty of Science has had a real growth spurt in recent years. It is up to Martina Vijver as the brand-new scientific director to secure that growth and further develop CML. 'This is a challenge that I am really looking forward too,' says Vijver. 'Together with my colleagues…

Global problems such as diseases of affluence or microplastics in the sea are too complex to be dealt with from a single scientific discipline or by just one country. Leiden University has the expertise to bring solutions to these enormous problems a step closer. Read more in the research dossier on…

'We must set out an agenda, in partnership, to manufacture our own means. This will stimulate science, small businesses, jobs and society in Africa and beyond.' With these words Naledi Pandor opened the symposium 'Science Diplomacy and International Development', which was held in her honour on 27 Februari…

The Faculty of Science has presented an infographic with tips and tricks for work stress. The reason for this was the Personnel Monitor 2018, which showed that work pressure is a problem for many employees at the Faculty. ‘It is important to start the discussion about work pressure, and to break the…

Who is Economic Man? Every economic paradigm presupposes an anthropology, a theory of human nature. This project explores the anthropologies presupposed and produced by ancient Greek economic texts, and the specific knowledge forms that shape these anthropologies.

The 2015 and 2018 Personnel monitors show that maintaining a good work balance remains difficult for staff at the Faculty of Humanities. Lecturer and researcher Judith Naeff and holder of the operational management portfolio Suzy Sirks have joined the Work Balance Steering Committee to examine the…

Veel Nederlanders hebben fysieke, psychische en sociale problemen tegelijk. Zij hebben hulp nodig van meerdere professionals uit verschillende organisaties. Fia van Heteren onderzoekt hoe deze professionals met elkaar én met cliënten samenwerken, en welke factoren deze samenwerking versterken of bel…

A basic income would not necessarily mean that people would work less. This is the conclusion of a series of behavioural experiments by cognitive psychologist Fenna Poletiek, social psychologist Erik de Kwaadsteniet and cognitive psychologist Bastiaan Vuyk. They also found indications that people with…

The Hague Space Resources Governance Working Group, hosted by the IIASL, has recently agreed on the Draft Building Blocks for the Development of an International Framework on Space Resource Activities and will present the outcome of its work during the NewSpace Europe Conference in Luxembourg. The Executive…

Na Zhou (PhD at ICLON) researched how vocational teachers’ learning takes place in a work placement programme and how their learning supports their teaching in school. Defence on 1 March.

From 2029, childcare in the Netherlands will be almost free for working parents. Egbert Jongen, Professor of Economics, spoke with Nieuwsuur about the missed opportunities for non-working parents: 'Participation in formal childcare is particularly beneficial for children from disadvantaged families.…

Biodiversity in the Netherlands is having a tough time. Professor of Natural Capital Koos Biesmeijer combines research with practical advice: from the greening of industrial parks to solutions inspired by hi-tech nature. Inaugural lecture 9 March.

In the seventeenth century, stereotypes about Africa and its inhabitants became deeply ingrained in European culture. PhD candidate Matthias Lukkes is going to investigate the role played by Dutch culture in this process.

Sharing a joke with a colleague in your work chat might seem harmless, but just how private is it? Gerrit-Jan Zwenne, Professor of Law and the Information Society, spoke to Quote about privacy at work: 'Employers can’t stop all private communication.'

Environmental scientist Rutger Hoekstra addressed the General Assembly of the United Nations on 12 April. And that’s quite a big thing to do. How do you get there as a scientist? And, more importantly, what was his message? In eight questions, Rutger explains what he does and why.

As Director of Education, Marcellus Ubbink learned to work together with many different people. For him, the social aspects are one of the key areas in his new role as Scientific Director of the Leiden Institute of Chemistry. Who is this new manager and what can we expect from him?

On 23 March 2023 Weidong Zhang defended his thesis in Leiden on achieving decent work in China. This research analyses to what extent China is achieving decent work based on a case study of decent working time. The word ‘achieving’ underlines that China is still in the process of securing this aim.…

On 12 November 2019, the members of The Hague International Space Resources Governance Working Group adopted the Building Blocks for the Development of an International Framework on Space Resource Activities, during the last meeting of the Working Group that took place in Luxembourg from 11 to 12 November…

On February 29 2024, the Humanities Career Service of Leiden University organised a career day to the European Union institutions in Brussels. Natalia Papageorgiou, student of the MA History (Politics, Culture and National Identities), talks about how the day went.

Twenty students and alumni from our faculty recently went on a working visit to NATO. Led by Leiden alumna Beaudine Verhoek (MA in International Relations), who is now Officer for Political Affairs and Security Policy at NATO, we were treated to an informative programme at the organisation’s brand-new…

We are proud to see the work "Magische Korstmossen" by our alumni Carolien Teunisse and Sabrina Verhage exhibited at the Cinekid MediaLab 2021. Via augmented reality, "Magische Korstmossen" lets children interact with the magical world of lichens.

'It gave our team a big boost to hear that our work was valuable,' says medical chemist Elmer Maurits about the moment they won the Venture Challenge. With their company Iprotics, they want to develop a drug that can better treat patients with autoimmune diseases and blood cancers. 25,000 euros of prize…