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In this dissertation, we work towards an experiment in which we aim to bring a micrometer sized magnet at the tip of a soft cantilever into a superposition.

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Inspectors at the Dutch Tax and Customs Administration can require people to provide more information relating to their tax returns. Esther Huiskers-Stoop from the Tax Law department investigated the rules in place to protect us when we are required to provide information to the tax authorities.

‘Violence as a Population Health Problem’ is one of 33 interdisciplinary projects that have been launched thanks to a Kiem grant. The project team will analyse a large patient database to identify links between violence and other health problems. ‘Violence can also be an expression of other factors,’…

Effects of maternal smoking, premature birth, intra-uterine growth retardation and asphyxia on child development.

Solving a scientific problem after decades: it’s a long-lasting dream for many scientists. Consequently, the research of Leiden and Eindhoven chemists gained a lot of media attention, for instance from the Belgian news website VRT Nieuws and science website Phys.org.

Theoretical research does not always give us the right solution to a problem in society. This message, loud and clear, is delivered during the final presentations of the Master Honours Class 'Social Innovation in Action'.

Climate change, social inequality, and the COVID-19 crisis are examples of wicked problems—issues that require collaboration across different disciplines. In partnership with the African Studies Centre, David Ehrhardt and Caroline Archambault (LUC), along with African partners, are researching the best…

Today, February 6th, the new course Wicked Problems Lab (in full: Wicked Problems Lab: working with governance, leadership and social innovation) started. This new course for third-year Honours students is part of the Honours Track

On Thursday the 29th of October, Kennis Maken Den Haag organises the third edition of Den Haag Draait Door. In this online talk show, experts and policymakers will discuss problems that exist in the city of The Hague. During this edition, as usual, students, researchers and residents from the region…

Boys with autism are more prone to develop physical complaints, depression and aggressive behaviour. Psychologists at Leiden University have discovered that this is mainly related to rumination. Publication in the Journal of Autism and Developmental Disorders.

As one prepares for the final sprint, the other stands ready at the starting blocks: in just a few weeks, Dean Mark Rutgers will pass the baton to his successor, Henk te Velde. In the meantime, both are working hard to ensure a smooth transition to a new faculty leadership. Henk is already regularly…

It often takes longer for women with heart problems to get the right diagnosis. In her Annie Romein-Verschoor Lecture, Professor Hester den Ruijter will talk about how hormones influence the heart and the importance of medical research that focuses specifically on women.

Mathematics students Pim Spelier and Bob Zwetsloot both won a medal at the International Mathematics Competition for University Students (IMC) 2018 in Bulgaria. Spelier talks about the competition, his preparations, and a mistake that almost costed him his good ranking.

The excuses for the slavery past? It would have been better if the cabinet had taken some more time on that, thinks university lecturer and Atlantic slavery expert Karwan Fatah-Black. 'Too bad they didn’t wait for the results of the study.'

The International Network for School Attendance launched an inaugural conference in Norway, playing host to 14 countries, 254 participants. Lead of this international network for the Netherlands is psychologist David Heyne of Leiden University.

Antibiotic resistance is an economic problem. Pharmaceutical companies cannot earn much from antibiotic research, so they do not invest in it. This makes it important that universities do so, says Ned Buijs.

For many teachers, they are a lifesaver: the people at the Science Teacher Support Desk. When a teacher has technical problems, they come to the rescue immediately. Veerle Warnders is one of them and she tells us what is so great about her job.

Exactly a century ago, astronomers observed the first two diffuse interstellar bands (DIBs) in space. A DIB manifests itself as a colour of light that is missing in the radiation from stars behind an interstellar cloud. Although about 500 DIBs are yet discovered, they remained inexplicable until recently.…

The Copenhagen interpretation of quantum mechanics states that a measurement collapses a wavefunction onto an eigenstate of the corresponding measurement operator.

The construction of 285 student studios on land owned by Leiden University is a step closer. On Thursday, student housing organisation DUWO and the Real Estate department of the University signed the leasehold agreement for the parcel of land in the Oegstgeest part of the Leiden Bio Science Park.

Prof. dr. Pancras Hogendoorn is stepping down as dean of the Faculty of Medicine and vice-chair of the Executive Board of Leiden University Medical Centre (LUMC). He is also resigning from all associated secondary posts. Hogendoorn has taken his decision in anticipation of the findings of an inquiry…

Schools are essential to children’s development and provide numerous options for growth. They also facilitate learning beyond the classroom and give children tools that support their social and emotional development. But each child is different and some children have communication problems. How can…

This dissertation studies the Asymptotics of Bayesian nonparametric inference for Gaussian linear models.

During their second year, the students of the bachelor Security Studies get a feeling of what their professional career might look like.

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The Dutch biotech start-up In Ovo is the first company to develop a large-scale solution for determining the sex of a chick while it is still in the egg. This fast and cheap technique can be applied mechanically at hatcheries, which was not possible before.

Leiden chemists Marc Koper and Ian McCrum have discovered that the degree to which a metal binds to the oxygen atom of water is decisive for how well the chemical conversion of water to molecular hydrogen takes place. This insight helps to develop better catalysts for the production of sustainable hydrogen,…

Not all problems are easy to solve, but with enough bright minds, you make progress step by step. ‘The kind of problems I am interested in have been occupying mathematicians for over two millennia,’ says theoretical mathematician David Lilienfeldt. In September, he started at the Mathematical Institute…

Months after the case of the abused foster child from Vlaardingen (Zuid-Holland) came to light, many questions still remain. Why was the child not listened to? Marielle Bruning, Professor of Child Law, discussed this with NOS, NPO Radio 1, NRC and Nieuwsuur.

Pui Chi Lai (35) has a lot on her plate, being a study adviser and coordinator of studies for two bachelor's programmes and two master's programmes. Alongside her job, however, she does not sit still and follows a PhD trajectory at the University of Macau.

On 30 April, Prime Minister Mark Rutte was presented with the manifesto of the NWO Youth Challenge, which contains advice for policymakers, scientists and administrators on the empowerment of youth in the time of coronavirus. The manifesto is based on research questions submitted to the science community…

The EU has been negotiating a trade deal with Mercosur, a South American trade bloc, for over 25 years. In recent weeks, significant progress has been made. Commission President Ursula von der Leyen met with Mercosur leaders in Asunción, Paraguay, on 17 January to sign the deal.

The number of students suffering from stress and anxiety has decreased slightly compared with 2021. But around half still suffer from mental health problems. This is according to the National Mental Health and Substance Use Monitor.

... together our steps make the journey!

‘Culture change takes time,’ said Vice-Rector Hester Bijl at the closing panel of the University’s Diversity Symposium on 26 January. She talked about the road to a diverse and inclusive university. The symposium provided plenty of concrete examples of small steps that can already be taken.

A Preventive Intervention Team that investigates children with behavioural problems and trains their social skills in order to prevent school dropout and other, more serious problems. This is a strategy that Leiden University and the municipality of Amsterdam have been using for several years already,…

Algorithms solve problems. But which algorithm is best suited to which problem? During his doctoral research, Diederick Vermetten developed methods to figure this out. And that is important for the entire field.

The response of international organizations to the problems of cross-border death and gift taxation needs to be revisited, according to PhD candidate Vassilis Dafnomilis. PhD defence on 3 June 2021.

Jelle van Buuren bespreekt de link tussen radicalisering en psychiatrische problematiek.

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.’

It is undeniable that the public is central to the practice and study of public diplomacy. Indeed, this field is known as *public* diplomacy.

Leiden University neuropsychologists have shown that customised intervention pays off. A new fundamental research-based approach in children who are in danger of going off the rails has delivered spectacular results.

The Sixteenth International Conference on Parallel Problem Solving from Nature (PPSN XVI) will be held in Leiden, The Netherlands on September 5-9, 2020. Leiden University and the Leiden Institute of Advanced Computer Science (LIACS) are proud to host the 30th anniversary of PPSN.

Psychologist Omar Burhan discovered in his study of nepotism that the hiring of kin, even if they are competent for the job, makes people feel they are procedurally being treated unfairly. However, certain people are liable to believe that effective leaders transfer their traits to their offspring.…