264 search results for “koen” in the Public website
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Kom naar de GLOBTAXGOV-seminar over belastingconcurrentie
Wat betekent belastinghervorming in de VS? Hoe groot is de invloed van belastingontwijkende multinationals op belastingconcurrentie in ontwikkelde en ontwikkelingslanden? En wat zijn de problemen met belastinguitgaven? Op 7 november vindt een GLOBTAXGOV-T20-seminar plaats op de Campus Den Haag van de…
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Sharp rise in purchasing power since 1977, inequality stable in recent years
In the period 1977–2020, the purchasing power of the Dutch population increased by 58 percent. The sharpest rise occurred from 1999–2009 (22 percent). This is the outcome of research conducted by Leiden University and Statistics Netherlands (CBS).
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Half million euros subsidy for pension research
Researchers from the department of Economics – Marike Knoef, Kees Goudswaard, Koen Caminada, Jim Been en Lieke Kools- have been awarded a major subsidy provided by Netspar. Netspar is a scientific knowledge network which is dedicated to promote a better understanding of the economic and social impact…
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1200 North Korean posters in one database
Korea specialist Koen De Ceuster has combined 1200 posters from North Korea in one database. He believes the posters are extremely valuable for researchers who want to make a more in-depth study of this closed country. The database will be launched on 15 June in Leiden.
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“KLM took the assignment as seriously as we did”
How can KLM remain the most sustainable airline? Master’s students from the Leiden Leadership Programme immerse themselves in practice and advise companies on major issues.
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Astronomers make invisible dark matter visible
An international team of astronomers, including Professor Koen Kuijken, has published a series of online articles presenting the first results of a major search for dark matter. Never before have researchers been able to chart so precisely the characteristics of groups of galaxies and their dark matter.…
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Looking back on the Research Day 2025: It Takes a Village – Shaping Interdisciplinary Futures
'Let's make this a twice-yearly tradition!'– a feeling shared by many after the vibrant Research Day. Engagement started early, with participants connecting informally over good coffee before the formal start of the event on 19 November.
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How do you find your way as an early career researcher in the academic pressure cooker?
How do you find your was as an early career researcher in the academic pressure cooker?
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Open Acces data and working paper income inequality 47 countries
Proud. We did it. All the Ginis. Open Access. Income inequality and Fiscal Redistribution in 47 countries 1967-2014.
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Symposium: Kronieken 1400-1850 (VU Amsterdam, 4 oktober)
Op 4 oktober vindt op de Vrije Universiteit het symposium "Kronieken, 1400-1850" plaats. Dit symposium wordt georganiseerd ter ere van het verschijnen van de handelseditie van het proefschrift van Peter Bakker. Drie VU-historici belichten hun onderzoek naar dit onderwerp vanuit verschillende hoeken.…
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Nieuwe publicatie Bas de Melker
Op 14 oktober 2021 verschijnt "Metamorfose van Stad en Devotie". Het gaat om een handeleditie van de dissertatie van wijlen Bas de Melker over het Amsterdam van de jaren 1385-1435. De dissertatie zelf wordt uitgegeven naar de tekst van Bas de Melker uit 2002, maar er is een epiloog aangehangen over…
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Science delegation enhances influence in China
A large delegation composed of 11 delegates from institutes from the Faculty of Science has made an extensive visit to China and enhanced Leiden’s influence in the Chinese academia, industry and local government.
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Professor Judi Mesman's portrait festively unveiled in Senate Chamber
A truly special moment in the Senate Chamber of the Academy Building: the portrait of Professor Judi Mesman has been unveiled. 'Leiden University only reserves places in this chamber for its foremost scholars, and you are certainly one of them,' said Rector Magnificus Hester Bijl.
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Open Science at FGGA: from extra task to a natural way of working
What does it take to ensure that Open Science does not feel like an additional task, but instead becomes a natural part of good academic practice? During the Faculty Lunch Presentation on 19 March, the report “The State of Open Science at FGGA” was presented and discussed with colleagues from across…
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From lockdown to the lab: Leiden PhD researcher develops ‘decoy molecule’ to slow down coronavirus
While the Netherlands was in lockdown because of the coronavirus, PhD candidate Koen Rijpkema began his research into the same virus. In the lab, he developed molecules that can inhibit an important viral enzyme.
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Testimonials
Read about experiences of former students.
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Machine Learning
Computers are capable of making incredibly accurate predictions on the basis of machine learning. In other words, these computers can learn without intervention once they have been pre-programmed by humans. At LIACS, we explore and push the borders of what a revolutionary new generation of algorithms…
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Inside the expert's head
In a lot of research on education, general didactic principles are applied to a particular area of study. ‘But every field of study also has its own ways of thinking’, argues professor Fred Janssen. ‘If you can identify those ways of thinking, then you have a lot of indicators for how you can best organise…
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Postponement of the Congress on the Social Benefits of Higher Education to the autumn
The organising committee of the congress 'Social Benefits of Higher Education' has decided to postpone the congress.
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About
Leiden University has been promoting studies on Latin America and the Caribbean for a long time.
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Awards and Grants 2022
An overview of awards and prizes granted to our staff and students in 2022, as well as special appointments at Leiden University and other institutions.
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Threading the needle: constraining the stellar content and dynamics of the Galactic Centre with hypervelocity stars
In this thesis we use state-of-the-art observations and simulations to provide the best constraints to date on the HVS ejection rate and constraints on the stellar content and dynamics at the GC, including the progenitor binary populations and their star formation history.
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International organisations and the rule of law
International organisations that represent collaborations between States are becoming increasingly more powerful, and they have an increasing impact on our daily lives. For example, the European Court of Human Rights in Strasburg established that minors have a right to legal aid immediately following…
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Interviews with our alumni
As a graduate of the Faculty of Humanities, there are unlimited possibilities. Do you want to know more about the sectors and jobs Humanities' graduates end up? Read their stories below!
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About the programme
In the master’s specialisation in Economic and Consumer Psychology, students study the psychological mechanisms that underlie many of our choices and decisions concerning consumption and other economic behaviours.
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Ancient Worlds Network
The Ancient Worlds Network brings together staff and graduate students in LIAS working on the ancient Mediterranean and Near Eastern world.
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Nobel Prize laureate Paul Krugman in Wijnhaven: 'American men have real problems'
In a packed lecture hall at Wijnhaven, Nobel Prize winner Paul Krugman succinctly summed up the essence of his argument on Wednesday 17 September: ‘Running a good society is hard’. His lecture held up a mirror to economists and policymakers.
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Hora Hester Bijl! Farewell to a rector who steered the university through turbulent times
The university bid farewell to its Rector Magnificus, Hester Bijl, on 13 January during the ‘Hester’s Highlights’ symposium.
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In memoriam: Juan José Jaime Aloísio Archidona Ramírez (1992 - 2024)
On Monday 26 February the terrible news reached us that our gifted former Egyptology student – and former student assistant at the Leids Papyrologisch Instituut – Juan Archidona Ramírez had succumbed to cancer.
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Former Leiden Colleague Sven Vleeming honored with ‘Festschrift’
On February 2nd, 2018, Professor Sven P. Vleeming of Trier University was presented with a ‘Festschrift’ to celebrate his retirement last summer. The book was presented to him, in the presence of friends and colleagues from the Netherlands and abroad, by the editors: his former Leiden colleagues Koen…
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The state of open science at fgga
What is the state of open science at the Faculty of Governance and Global Affairs? Our faculty offers a unique environment for moving open science practices forward, while keeping a critical eye to their potential excesses.
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34th World Cultural Council Special Recognition Award for Marike Knoef
Marike Knoef has won an award on the 34th Award Ceremony of the World Cultural Council (WCC).
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Library comes up with creative solutions
UBL, Leiden University Libraries, is doing all it can to continue to offer its services. Even now the motto is, ‘work from home’. Who is doing want and how are things going?
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Flying pencil links Leiden and The Hague at launch of new degree programmes
It was a memorable start to September. While Leiden marked the opening of the academic year, The Hague celebrated the launch of three new degree programmes. Students were welcomed on a blue carpet rolled out at the entrance to the lecture halls.
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Lars van DoornFaculteit der Rechtsgeleerdheid
l.m.j.van.doorn@law.leidenuniv.nl | 071 5278511
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Maarten van 't RietFaculteit der Rechtsgeleerdheid
m.van.t.riet@law.leidenuniv.nl | 071 5271571
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Fewer teaching positions, more lecturers
Bringing research and teaching closer together is part of the mission of Leiden University. The 'Career Policy for Academic Staff' working group that has draw up new guidelines for appointing academic staff discovered that the University has many members of staff who do not conduct research.
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Space telescope Euclid makes first test images - astronomers are full of anticipation
The two instruments of ESA's space telescope Euclid have taken their first test images. The first images indicate that the space telescope will achieve the scientific goals for which it was designed - and possibly much more. Euclid will create a 3D map of a third of the sky, allowing scientists to study…
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New KiDS result: Universe 10 per cent more homogeneous than assumed
New results from the Kilo-Degree Survey (KiDS) show that the Universe is almost 10 percent more homogeneous than previously thought. The new KiDS map was created using the partly Dutch OmegaCAM on ESO's VLT Survey Telescope on Cerro Paranal in Northern Chile. An international team of astronomers from,…
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A mathematical three-step rocket helps biologists study tumour blood vessels
Koen Keijzer combined three mathematical models into one unified system capable of making meaningful predictions about how cells form blood vessels. This helps biologists studying the chaotic, leaky blood vessels found in and around tumours.
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Obesity and medication: when does bodyweight matter?
How can we best treat infectious diseases in people with obesity? Hospital pharmacist and PhD researcher Koen van Rhee studied how obesity affects blood levels of two commonly used medicines. He also developed a method for pharmaceutical companies to test new drugs on this patient group.
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EL CID: enthusiastic start for first-years and mentors!
EL CID has started! This is the week when new students have the chance to get to know the city and student life. Some of the mentors and first-years introduce themselves.
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Just Peace Dialogue: Imagining Peace
Amidst today’s armed conflicts, authoritarian governments, cyber-attacks, organized crime, economic insecurity, and ecological destruction, it can be hard to imagine peace. What do we mean by ‘peace’, beyond the absence of war? What kind of peace are we seeking? What makes people and society at peace?…
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Erwin Muller appointed Vice-Rector of Organisational Development
Leiden University’s Executive Board has appointed Erwin Muller as Vice Rector of Organisational Development. In this role, he will help further professionalise and improve the university’s organisation as per the Strategic Plan.
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The AFITE Project successfully hosts the Una Europa Conference on Academic Freedom
On 22–24 October 2025, Leiden University welcomed scholars, policymakers and higher education leaders for the Una Europa Conference on Academic Freedom. Organised by the AFITE project team and supported by Una Europa Seed Funding 2024, the three-day programme examined current pressures on academic freedom…
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Marie Curie grant for dark matter
Leiden Observatory is going to use a new technique to carry out calculations on gravitational lensing measurements. They will do this is the context of research into the formation of elliptical galaxies. Alessandro Sonnenfeld (University of Tokyo) who developed this technique joined the research team…
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What is the shape of cells?
Cells in our body are constantly performing small tasks, such as repairing wounds. They exert force by changing shape. But how do cells translate their shape into exerting a force in a specific direction? Experimental and theoretical Leiden physicists have now found a clue to answer this question. Cells’…
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'The way it looks now, Kim Jong-un is the winner'
Something that a year ago would have been unthinkable has become a reality on 12 June: Donald Trump and Kim Jong-un sat down together to talk about nuclear disarmament. Can these two hardliners reach agreement in the negotiations? Professor of Korea Studies Remco Breuker is doubtful. 'As it looks now,…
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Law student Erwin Dijkstra awarded second prize Leiden University Thesis Prize 2019
Master's student Erwin Dijkstra won for his thesis on the position in society of people with a disability.
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LUC congratulates the 2016 Theses of Merit winners and Brill Prize winner
LUC The Hague congratulates the authors of this year’s Theses of Merit and the winner of the Brill Prize 2016!