De Pagus Renensis van de 4de tot de 8ste eeuw na Chr.: Een archeologische synthese

Biology PhD student at Leiden University Kevin Groen and his identical twin brother Marvin Groen (a biology student as well) will be on Dutch Television from Tuesday 5 September in the programme called Vroege Vogels every week (NPO 2, 19:20).

Kan artificiële intelligentie (AI) helpen om subtiele veranderingen in de gewrichten op te merken op MRI-beelden van patiënten met reumatoïde artritis? Die vraag gaan Leidse wetenschappers beantwoorden dankzij een subsidie van de Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO).

Water fleas and damselflies are much more sensitive to crop protection products in nature than in the lab. These test results from the Living Lab were presented by Henrik Barmentlo and Martina Vijver in Dutch radio show Vroege Vogels.

This thesis seeks to combine two different research topics; Multi-Objective Optimization and Complex Network Analysis.

In this dissertation several settings in the Online Learning framework are studied. The first chapter serves as an introduction to the relevant settings in Online Learning and in the subsequent chapters new results and insights are given for both full-information and bandit information settings.

Studies over tien eeuwen leescultuur

In welke mate hebben domaniale structuren de machtsvorming en nederzettingsontwikkeling in en van het gewest Holland bepaald?

The research in my group addresses a range of topics related to quantum many-body physics.

Als gevolg van de grote technologische vooruitgang in de gezondheidszorg worden in toenemende mate gegevens verzameld tijdens de uitvoering van klinische onderzoeken.

PhD defence

How can we facilitate the early recognition of stress and anxiety in the classroom and collaborate with schools in providing low-threshold interventions?

PhD defence

Adhesives are an incredibly important part of every day life. They help hold together everything from shoes and mobile phones to satellites in space. But we didn’t invent adhesives: Neanderthals did, to make handles for stone tools over 191,000 years ago. Leiden researchers now found that Neanderthals…

Just published:

Maartje van der Woude, Professor of Law and Society, was a guest on NPO Radio 1 programme 'Spraakmakers' to talk about more border fences on the EU’s external borders and the usefulness of such measures. She was also a guest on 'Vroeg!' to discuss a court case about ethnic profiling.

The book 'Darwin comes to town’ by Menno Schilthuizen has been awarded the best nature book in the Netherlands. The Leiden biologist received the Jan Wolkers Prize, awarded annually by Dutch TV and radio show 'Vroege Vogels'. In his book Schilthuizen describes evolution in one of the newest and most…

The Leiden Institute of Physics (LION) is the coordinating partner in the Qluster research project, which was awarded a 2,9 million euro FET Open grant by the European Union. The three-year project, which started on 1 December 2019, aims to produce many photon entanglement to aid quantum communication…

Nederland heeft geen nationale bloem en daar wil het radioprogramma Vroege Vogels verandering in brengen. Verschillende experts van Universiteit Leiden zijn betrokken bij de verkiezing.

Op woensdag 12 oktober worden vier lezingen gehouden over een opmerkelijke verzameling aantekenboekjes uit de vroege elfde eeuw, thans bewaard in Leiden. Ze zijn vervaardigd door de Franse monnik Ademar van Chabannes. Ad van Els schreef er een diepgravende studie over: A Man and his Manuscripts. De…

In de context van het FWO Project "The Social Life of Early Netherlandish Painting" dat wordt geleid door Frederik Buylaert, Jan Dumolyn (beiden Vakgroep Geschiedenis) en Maximiliaan Martens (Vakgroep Kunst-, Muziek- en Theaterwetenschappen) is een driejarige postdoctorale onderzoekspositie beschikbaar.…

Scientists, and not only those in the social sciences and humanities, think that valorisation is mainly about economic profit. This is what Stefan de Jong writes in his PhD dissertation. His advice: spread knowledge about valorisation; that way it’s facts that determine the valorisation debate, and…

This year, Leiden University celebrates its 444th birthday – and when you’re giving a party, you need great music! Neuropsychologist Rebecca Schaefer agrees. She has been fascinated by music since she was a child, and now she studies how music can make us happy, give us energy or calm us down.

Book historian Erik Kwakkel found an intriguing snippet of text earlier this week, that bears unexpected evidence of some of the problems encoutered by early printers: censorship and the affiliated fuss of seeking and printing Church approval.

That corn was highly important in the Maya culture is something that Genner Llanes Ortiz, himself a Maya from the Mexican province of Yucatan, has always known, right from his childhood. But just how important the role of corn is in the collective memory of his people, is one of the subjects of his…

Stay tuned for updates on relevant media appearances of Maikel Kuijpers.

Dit deel bevat de editie of heruitgave van 52 papyri en ostraca, daterend uit de periode tussen de derde eeuw voor Christus en de achtste eeuw na Christus.

In Dutch nature, plant species that depend on pollination by insects are disappearing. Environmental scientist Kaixuan Pan shows this after analysing 87 years of measurements from more than 365,000 locations. Several national and international media reported on the study results. Below is an overview…

A portrait can inspire, intimidate or reassure the viewer. Leiden University has many portraits of professors and students, from the foundation of the University to the present day. What purpose do these portraits serve? The 'Facing Inspiration' exhibition in the Oude UB is about this question.

The Public Day of the Leiden Institute of Brain and Cognition (LIBC) has grown in recent years into one of the most popular popular-science events in Leiden. Tickets are selling fast for the upcoming edition on Friday 11 October in Stadsgehoorzaal in Leiden. Professor Bernet Elzinga tells us more.

Recently, a new round of NWO XS grants was awarded. This grant is given to researchers with small, high-risk, innovative or promising research projects by the Dutch Research Council (NWO). In this round of the so-called Open Competition XS, no fewer than six researchers from the Institute of Political…

A new challenge for Felix Ameka. The senior lecturer at the Centre for Linguistics has been appointed professor by special appointment of Ethnolinguistic Vitality and Diversity in the World. ‘I am looking forward to promoting ethnolinguistic diversity and vitality.’

During the final session of the PRE-University Class Security Challenges in the 21st Century, students showcased their thorough analysis of contemporary safety and security challenges. The results were impressive, according to both the teachers and the assessors: ‘You almost forget that they’re high…

The daisy has been crowned the Netherlands’ national flower. Rogier van Vugt, Head of Horticulture at the Hortus botanicus, explains why the daisy merits its elevation to national symbol.

Jasmina Mačkić, assistant professor at the Europa Institute, presented her research during ‘The Dissident’, a live talk show which is organised regularly by World-Talks, on 24th May 2018. The event revolved around the Nigerian human rights defender Justus Ijeoma, the founder of the International Human…

Environmental researcher Paul Behrens generated both international as national media attention with his recent publication in Nature Energy. The media included Science Daily, Quartz and the Dutch financial newspaper Financieel Dagblad. In his publication, Behrens warns for possible power disruptions…

Dutch children’s picture books are full of animals, but mainly mammals are portrayed. Especially pets and exotic animals are popular. A large part of the Dutch fauna is less visible, but biologist Michiel Hooykaas of Leiden University sees plenty of opportunities for a more biodiverse book world.

When stars are born, large clouds of gas and dust form that are known as circumstellar discs. Research by PhD candidate Francisca Concha-Ramírez shows that strong radiation from neighbouring stars soon evaporates the dust in these discs, which can prevent planet formation at an early stage. PhD defence…

There has been a lot of media attention for the report recently completed by the Institute of Environmental Sciences (CML) from Leiden University. However, it has long been known that Dutch surface water contains too many toxic pesticides. ‘We will have to improve our ways of life together with many…

At Leiden University many staff members and students value making sustainable and responsible choices in their personal lives. Making these choices in our professional lives may feel a bit more complicated. But is that feeling justified? Archaeologists Gerrit Dusseldorp and Roos van Oosten share their…

Last Thursday, Leiden Leadership Programme (LLP) students were once again introduced to a big name with tons of leadership experience. This time, Femke van der Meulen, prison director and founder of PrisonWatch, addressed the students. The many personal experiences she shared will stay with them for…

A cover over your drink in the pub, deodorant as pepper spray or headphones to avoid hearing catcalling: many women use everyday objects to feel safer in public spaces. Student Anne van der Linden made an online exhibition about this.

Emily den Boer of LAPP visited the Canal Cups Expo, displaying the plastic cups cleaned up by students after Leidens Ontzet.

Academics who offer their books free online reach many more readers and are cited slightly more often. Surprisingly enough, it has little effect on the sale of paper editions, positive or negative. This is the conclusion of PhD candidate Ronald Snijder. PhD defence 29 January.

Micah DenBraber studied at Leiden University College in The Hague while pursuing an internship at the World Resources Institute (WRI), a self-proclaimed ‘think-and-do-tank’, where he built partnerships with the philanthropic sector, among other things.

Historians recently started preliminary research on Leiden University’s role in colonialism and historical slavery. Our knowledge about this is too limited and fragmented. They are looking with fresh eyes at Leiden’s archives and collections. An interview with historians Alicia Schrikker and Ligia G…

More parties are standing in this national election than at any point since the Second World War. Simon Otjes, an assistant professor in Dutch Politics who conducts research into new political parties, explains why this is. He also predicts which new parties stand a serious chance of winning a seat…