Many students have difficulties to read and give meaning to algebraic formulas. In this study it is explored whether graphing formulas with pen and paper will improve students’ability to reason with algebraic formulas.

The registration period for semester 1 (2024/2025) has closed.

The registration period for semester 2 courses 2024/2025 has started.

Osteoarchaeologists help forensic scientists solve crimes. They also study bone material from the Second World War in order to identify victims.

Learning from small data sets in machine learning is a crucial challenge, especially when dealing with data imbalances and anomaly detection. This thesis delves into the challenges and methodologies of learning from small datasets in machine learning, with a particular focus on addressing data imbalances…

Promotores: S.F. Portegies Zwart, E. M. Rossi

Leiden archaeologists investigate how people in the past impacted their environment. Together with scientists, environmental scientists, and humanities experts, they use this information to draw conclusions about the present – and show what we can learn from it for the future.

Archaic and Classical architectural terracottas constituted an integral part of the architecture of monumental buildings at Akragas. These objects therefore provide unique insights into the built environment of sanctuaries at this important Greek colony in Sicily. This research's multi-disciplinary…

Morphometric and morphological differences have been used extensively in the past to study domestication of the wolf and the origin of dogs. Certainly before genetic testing was performed, these methods were the only means to diverge both groups. But still now, when aDNA cannot be extracted, morphometry…

How can we find novel natural products from Actinomycetes that act as growth modulators on mammalian cells? Can we harvest and develop the potential of these novel compounds for industrial and medical biotechnology?

Onze samenwerkingsovereenkomsten bieden zowel studenten als medewerkers de kans om een periode in het buitenland te verblijven en zo hun horizon te verbreden. Ook fungeren de overeenkomsten regelmatig als basis voor onderzoeksprojecten of andere samenwerkingsvormen.

What can we learn from how maritime conflicts were managed in the past? What significance did Maritime Conflict Management have in shaping the standards of diplomacy and international law in pre-modern Atlantic Europe (1200-1600)?

Like any language, the natural sign languages of deaf communities differ from each other in their grammars and lexicons. A growing number of studies indicates that sign languages make use of the gestures of hearing speakers to build linguistic structure. This implies that variation and similarities…

Are you a British citizen currently studying at Leiden University? Find out about the effects of Brexit such as the transition period, residence permits, tuition fees and more.

On January 25th, artist Jonas Staal will defend his dissertation which explores the development of propaganda art from the 20th to the 21st century.

Coming to and living in The Netherlands after Brexit.

Like any language, the natural sign languages (henceforth: SLs) of deaf communities differ from each other in their grammars and lexicons. A growing number of studies indicates that SLs make use of the gestures of hearing speakers to build linguistic structure. This implies that variation and similarities…

Every year, around 400 PhD candidates defend their dissertation at Leiden University, spread across all the University’s different disciplines.

Promotor: M. de Jong, Co-Promotor: Samtleben

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.

On Friday 24 June 2022, the Department of Constitutional and Administrative Law of Leiden University welcomed more than forty administrative law scholars to the first Young Administrative Law Researchers Day.

This interdisciplinary project applies data science techniques to qualitatively and quantitatively visualize the interaction between the University and the city of Leiden (Town&Gown) from 1575 onwards. One of the possible angles for follow-up research is diversity, especially from the international…

On 22 May 2017 Dr Carolien Metselaar (54) will be appointed Secretary to the Executive Board / Director-General of the Administration and Central Services Department at Leiden University.

Social science research helps us understand human behaviour and social structures. These are determined by various factors, which makes the research complex and increases the likelihood of drawing the wrong conclusions. The choice of research method and analysis is therefore extremely important. It…

It is the spring of Arts and Science! On Tuesday April 16, Young Academy Leiden organized an interfaculty lunch during the Spring of Arts and Science, a season of interdisciplinarity that is being organized together with Jong Universiteit Leiden (JUL). This first event was a visit to Rijksmuseum Boe…

It is the spring of Arts and Science! On Tuesday April 16, Young Academy Leiden organized an interfaculty lunch during the Spring of Arts and Science, a season of interdisciplinarity that is being organized together with Jong Universiteit Leiden (JUL). This first event was a visit to Rijksmuseum Boe…

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As of July 1st, 2006 prof. dr. Richard D. Gill has been appointed professor in Mathematical Statistics at our institute, holding the position previously fulfilled by Prof. Sara van de Geer who went to Zurich. He has been at Leiden before, from 1986--1990 as extraordinary professor at a chair held by…

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!

This research deals with the royal houses of the Vijayanagara Empire and four of its successor states: Ikkeri, Tanjavur (under both the Nayaka and Bhonsle rulers), Madurai, and Ramnad. This study is thus concerned with dynastic politics and imperial legacies in south India between the 14th and 18th…

The unemployment replacement rate data set, assembled by Olaf Van Vliet & Koen Caminada (version 1, January 2012), provides data on unemployment benefit schemes in 34 welfare states from the 1970s until 2009. The current data set includes all 27 member states of the European Union and 7 non-EU OECD…

ELS@Leiden aims to give empirical legal research skills and interdisciplinarity a prominent place within the law school curriculum.

Leiden University is 444 years old, and to celebrate 220 cyclists took to the saddle on 11 May and followed the new 44.4 km route around Leiden, The Hague and the surrounding area.

Biological cells, the basic building blocks of all life forms, are surrounded by a lipid membrane. More than half of the membrane is occupied by membrane proteins, which can regulate the cell functionality through specific arrangements.

The Dick Stufkens Prijs 2010 is awarded to Dr. Niels Elders. The prize is given by the Holland Research School of Molecular Chemistry for his Ph.D. thesis “Multicomponent Approaches to Molecular Diversity & Complexity”, in which he describes the development of various new multi-component synthetic procedures…

The Dick Stufkens Prize 2018 for the best PhD thesis of the Holland Research School of Molecular Chemistry (HRSMC) will be awarded to Dr Stefan Vuckovic. In his thesis, Vuckovic presents a new and innovative approach to the quantum mechanical calculation of atomic and molecular energies. It lays the…

Smart algorithms and powerful processors are just as essential for astronomy as big telescopes. Astronomers at Leiden University therefore constantly operate at the interface between astronomy and data science.

What are 'defects' and mechanical properties of mosaics of different shapes of tiles?

Back after pandemic interruptions, the Dutch Network Science Society Symposium took place on May 19th, 2022. The event brought together researchers from around The Netherlands studying complex networks and representing various disciplines, including mathematics, physics, neuroscience, computer science,…

Wednesday 23 of February the NESA Netherlands School of Anthropology) has been officially launched with the first Masterclass by Prof. Dr. Marja Spierenburg (Leiden University) and Dr. Anke Tonnaer (Radboud University). The NESA is a graduate program for PhD candidates of the five Dutch universities…

Patients share valuable advice and experiences with their peers in online patient discussion groups.

Organized by the Grotius Centre for International Legal Studies, this programme enables students and professionals from all over the world to engage in discussions on the prospects and challenges of international criminal justice. The announcement for the next edition is scheduled to take place…

New Approaches to the Study of Textual Material from the Early Pharaonic to the Late Antique Period

One of the current research projects funded by the profile area Political Legitimacy is the research group From Disorder to Order: Conflict and the Resources of Legitimacy.

Promotor: J.N. Kok, Co-Promotor: A.J. Knobbe

Muslim scholars work in a long and rich tradition of knowledge-production in their own culture.