Distinguished Fellows of Leiden University College The Hague are acknowledged for their extensive and outstanding expertise in the private or public sector, and for their intellectual contributions to LUC’s academic programme and scholarly community.

An algorithm is discussed to compute the exponential representation of principal units in a finite extension field F of the p-adic rationals.

The Ada Lovelace Distinguished Lecture Series brings outstanding computer scientists from around the world to Leiden University. The lecturers will share exciting ideas and results from the forefront of computer science.

The unit residue group, to which the present thesis is devoted, is defined using the norm-residue symbol, which Hilbert introduced into algebraic number theory in 1897.

The Microscopy Unit houses, maintains and coordinates most of the microscopy equipment of the IBL. The available equipment ranges from conventional light and fluorescence microscopes, to confocal laser scanning and electron microscopes. In addition, infrastructure is available for histology, including…

The main aim of this project is to reveal and unravel the invisible histories of the UN, transcending the dominant Western perspective to recover the historical agency of Global South actors. The research will investigate how the UN has both facilitated and limited their role in shaping global order…

Madeleine Hosli, Professor of International Relations at Leiden University, together with two other authors, wrote a chapter in Group Politics in UN Multilateralism. This chapter assesses the composition and functioning of the African Union (AU) within the United Nations.

In this article, Kuipers and Timmermans analyze the first lady's relationship with policy problems in the period 1945-2013.

The Summer School ‘The European Union, the United Nations and Global Governance’ will focus on a range of topics relevant to interactions between the European Union (EU) and the United Nations (UN) and the EU’s role within current patterns of global governance.

This dissertation investigates Extended Lexical Units (ELUs), elements that are bigger than just one word and which are stored in the Lexicon.

This commentary on the United Nations Convention Against Corruption discusses each provision of the treaty, traces the provisions’ drafting history, and explores their implementation in domestic legal systems.

Course, Summer School

Organisations such as the EU are of enormous benefit to the member states, but the inhabitants of the member states are often unaware of this. Leiden researchers investigate whether international organisations such as the EU or ASEAN are able to influence global politics.

This new article by Monica Kaminska is part of a special issue for Journal of Cybersecurity, based on a selection of contributions from THe Hague Program for Cyber Norms' 2019 Conference.

The Sackler Distinguished Lecture Series on Human Rights was established at Leiden University through an endowment given by Dr. Raymond R. Sackler and his wife, Beverly, international philanthropists with a commitment to supporting scientific research. The lectures mark the annual celebration of International…

Does foreign aid promote human rights?

Just published: United in incoherence – Private law concepts under pressure from European financial law (in Dutch), in: Tijdschift voor privaatrecht 2017-4

Natashe Lemos Dekker has been awarded the Distinguished Women Scientists Fund 2021. This travel grant for female postdocs allows her to spend a period as a visiting fellow at the UCLA Department of Anthropology in the United States.

The main object of study in this thesis is an Arakelov inequalitywhich bounds the degree of an invertible subsheaf of the direct image ofthe pluricanonical relative sheaf of a semistable family of curves.

This monograph, written by dr. Dennie Oude Nijhuis and published by Cambridge University Press, discusses the postwar development of the welfare state.

On 3 December 2019, Meda Couzens defended her thesis 'The application of the United Nations Convention on the Rights of the Child by national courts'. The doctoral research was supervised by Prof. T. Liefaard and Prof. J.J. Sloth-Nielsen.

The lipid matrix of the skin's stratum corneum plays a key role in the barrier function, which protects the body from desiccation. The lipids that make up this matrix consist of ceramides, cholesterol, and free fatty acids, and can form two coexisting crystalline lamellar phases: the long periodicity…

On 20 October 2021 Michael Ramsden defended the thesis 'The Role of the United Nations General Assembly in Advancing Accountability for Atrocity Crimes: Legal Powers and Effects'. The doctoral research was supervised by Prof. N.M. Blokker.

Neuroscientist Anne Hafkemeijer is able to distinguish two different forms of dementia using advanced imaging techniques. This is the first step towards early recognition of dementia in patients on the basis of brain networks. PhD defence 26 May.

On 18 September 2019, Huw Llewellyn defended his thesis 'An Institutional Perspective on the United Nations Criminal Tribunals: Governance, Independence and Impartiality'. The doctoral research was supervised by Prof. N.M. Blokker and Prof. L.J. van den Herik.

Bone remains that are thousands of years old are often too fragmented to be identified. PhD candidate Frido Welker is the first person to be able to distinguish human bones from one another on the basis of old proteins. PhD defence 18 May.

The book 'The United Nations Convention on the Rights of the Child' is the result of the international academic conference – ’25 Years CRC’ – which was held in November 2014 in Leiden on the occasion of the 25th birthday of the UN Convention on the Rights of the Child.

In 2015 the division ‘Migration and Crime’ of the Dutch Society for Criminology has been established to bring together academic researchers that are active in this diverse field with each other and relevant persons and organisations. On March 10 it will organise its first seminar on labour exploitation,…

The project ‘Founding an Inclusive Space’ investigates the histories of various LGBT+ archives in the Netherlands, Germany and the United Kingdom.

If you want to help make the world a better place, you first have to understand this world. This conviction forms the basis of our research and teaching in Leiden and The Hague.

Archaeologist Corinne Hofman wins the Distinguished Lorentz Fellowship 2018/19 for research into the changing world of indigenous peoples as a result of colonialism. “The perspective of indigenous communities is still lacking in most history books.

The book reinterprets the role of the UN during the Congo crisis from 1960 to 1964, presenting a multidimensional view of the organisation.

On 20 November, Special Professor of United Nations Studies in Peace and Justice, Alanna O'Malley, presented her research agenda for the next 3 years. An ambitious agenda full of projects to gain more insight into the origin and functioning of the UN.

This article studies the securitization of immigration in the United States of America (U.S.), through the analysis of the National Security Strategies (NSS) published between 2002 and 2017, using a two-layered analytical framework that combines securitization theory and agenda setting theory.

On 7 November 2018, Catherine Harwood defended her thesis 'Navigating Between Principle and Pragmatism: The Roles and Functions of Atrocity-Related United Nations Commissions of Inquiry in the International Legal Order'. The doctoral research was supervised by Prof. dr. L.J. Van den Herik and Prof.…

Leiden students organised a Model United Nations (MUN) from 3 to 6 May in The Hague. An MUN simulates the working of the United Nations and is intended to allow students to learn about the practice of international relations. View the photo series.

Professor Jan Melissen (ISGA) is the recipient of the 2022 ISA Distinguished Scholar Award in Diplomacy Studies. It is the first time this prize has been awarded to someone in Europe. Melissen: ‘I am very honoured and humbled to be the first person to receive this award outside North America.’

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Drawing on insights from past and contemporary scholars and world leaders, the report explores the concepts of a new social contract, a new global deal, and networked and inclusive multilateralism introduced recently by Secretary-General António Guterres to help the United Nations better grapple with…

The United Nations celebrates its 75th anniversary this year. With the corona crisis and rising nationalism, there’s not much cause for celebration. Which challenges will the global organisation have to overcome to be assured another 75 years of existence?

The US travel restrictions are deeply regrettable. Support will be offered to students and staff who are affected.

On November 8, the Association for Computing Machinery (ACM) named Wessel Kraaij as one of the 2017 Distinguished Members. ACM Distinguished Members have made a significant contribution to the field of computing, computer science or information technology. This year, worldwide 43 scientists received…

This volume is pubished in the IMISCOE-AUP Series and edited by Marlou Schrover and Deirdre M. Moloney.

On 26th and 27th February, the South African Minister of Science and Technology, Naledi Pandor will visit Leiden University as honorary Oort Visiting Professor of Astronomy for Development. She will give a ceremonial lecture on Astronomy for Development in the Academiegebouw on 26th February and lead…

Subproject of the ERC project 'Challenging the Liberal World Order from Within: The Invisible History of the United Nations and the Global South'.

Subproject of the ERC project 'Challenging the Liberal World Order from Within: The Invisible History of the United Nations and the Global South'.

Young academics often face uncertainties in their academic careers. It is for precisely this reason that Leiden postdocs recently united in a representative body. The Leiden University Postdoc Assembly (LUPA) wants to be a positive force for change, says Eduard Fosch-Villaronga.

Subproject of the ERC project 'Challenging the Liberal World Order from Within: The Invisible History of the United Nations and the Global South'.

“United Nations peacekeeping is a proven investment in global peace, security, and prosperity. Together, let us pledge to do all we can to enable that mission to succeed”. – Secretary-General António Guterres

From 1 August 2018, Alanna O'Malley was appointed as Chair of United Nations Studies in Peace and Justice, focusing on the ‘lesser-known actors’ of the UN: women, the youth, the agents of informal diplomatic networks within the UN and actors from the Global South. This Special Chair has been created…