For many system in statistical physics the microcanonical and canonical ensemble are equivalent in the thermodynamic limit, but not for all.

With this thesis the PhD-candidate aims to enrich the body of evidence concerning the relation between stress and health, and the mediating role of (un)conscious perseverative cognitions, which is captured in the extended perseverative cognition hypothesis.

Piecing together the urnfield mortuary process in the Lower-Rhine-Basin, ca. 1300 - 400 BC

This thesis explores Breaking of Ensemble Equivalence (BEE) in random graph models by examining the spectral properties of adjacency matrices. The goal is to identify spectral characteristics that differentiate random graph ensembles, enhancing the understanding of complex network structures and beh…

In this thesis, we have used numerical approaches to study the effects of translational symmetry breaking on strange metallic systems as realised by the holographic duality⁠.

Humans share meaning through language. Over time, repeated interactions have shaped languages into forms that match our cognitive preferences, making them structured, expressive, easy to learn, and ultimately, meaningful.

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

The Journal of the LUCAS Graduate Conference was founded in 2013 to publish a selection of the best papers presented at the biennial LUCAS Graduate Conference, an international and interdisciplinary humanities conference organized by the Leiden University Centre for the Arts in Society (LUCAS). The…

This research focuses on the distribution of chemical elements in protoplanetary disks, the birthplaces of planets. These disks form around young stars and contain gas and dust, from which planets grow. Ice plays a crucial role in planet formation, aiding the clumping of dust particles and influencing…

Laboratory, observation and modeling work on the dissociation of polycyclic aromatic hydrocarbons in interstellar environments and the formation of new molecular species through the fragmentation process.

A study of the technology, form, function, and use of pottery from the settlements Uitgeest-Groot Dorregeest and Schagen-Muggenburg 1, Roman Period, North-Holland, the Netherlands

Parents may pass anxiety onto their offspring by exposing them to anxious behaviors in novel situations. Just as the parents’ anxious signals lead to anxiety, parents’ confident signals can ward off anxiety in the offspring. This project is seeking a new way to break anxiety transmission in the family…

The Journal of the LUCAS Graduate Conference was founded in 2013 to publish a selection of the best papers presented at the biennial LUCAS Graduate Conference, an international and interdisciplinary humanities conference organized by the Leiden University Centre for the Arts in Society (LUCAS). The…

How do authorities and citizens construct meaning in the aftermath of jihadist terrorist attacks through the use of frames, rituals, and symbols. What does this reveal about the communicative impact of terrorism?

This project investigates the professionalisation of university libraries in the nineteenth and early twentieth centuries, through the lens of the medieval manuscript holdings. Taking Leiden University Library as a starting point, it sheds light on the changing practices surrounding the conservation,…

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Researchers within the cluster are committed to the close and expert analysis of the materiality and content of the arts, literature and media they study. Different types of media bring various aspects of this core interest to the fore.

The leading argument of this doctoral thesis is that Aristotle’s text De Interpretatione is of methodical relevance for present-day philosophical thinking. In the era of science and technology, the status of philosophy has become problematic.

The Journal of the LUCAS Graduate Conference was founded in 2013 to publish a selection of the best papers presented at the biennial LUCAS Graduate Conference, an international and interdisciplinary humanities conference organized by the Leiden University Centre for the Arts in Society (LUCAS). The…

Engineering an efficient microbial enzymatic polyethylene degradation pathway via an innovative combination of biochemistry and computational biology tools for enzyme discovery and characterization.

The Journal of the LUCAS Graduate Conference was founded in 2013 to publish a selection of the best papers presented at the biennial LUCAS Graduate Conference, an international and interdisciplinary humanities conference organized by the Leiden University Centre for the Arts in Society (LUCAS). The…

The Journal of the LUCAS Graduate Conference was founded in 2013 to publish a selection of the best papers presented at the biennial LUCAS Graduate Conference, an international and interdisciplinary humanities conference organized by the Leiden University Centre for the Arts in Society (LUCAS). The…

Transcutaneous vaccination is attractive because it is non- or minimally invasive, pain free and the site of administration (skin) is easily accessible. What’s more, transcutaneous immunization can lead to a strong immune response owing to the presence of immune-competent cells in the skin.

Arjan Louwen (MA) will start a PhD research project on the social and ideological aspects of Late Bronze Age and Early Iron Age cremation graves in continental Northwest Europe (1100-500 BC): Breaking and making the ancestors. Making sense of the inconspicuous 99% of urnfield graves.

A collaboration between the IBL and LUMC has resulted in the discovery that the polymerase theta enzyme is essential for the integration of Agrobacterium T-DNA into the genome of plants. The finding means a break-through for the development of more efficient systems for targeted genome modification…

In this thesis, several aspects of software debugging from automated crash reproduction to bug report analysis and use of contracts have been studied.

This article explores how the meaning of the rule of law has evolved over the past century in UK and US parliamentary speeches, focusing on procedural (thin) and substantive (thick) conceptualisations.

This dissertation focuses on irregular patterns in Vedic Grammar and Poetry.

Striga hermonthica, commonly known as witchweed, infests major cereal crops in Sub-Saharan Africa causing severe yield losses and threatening the livelihood of millions of resource poor farmers.

In romantic love, we often invoke an idiom of infinity—for instance, when we promise to love each other forever, or declare the other to be the one. But what does this metaphysical appeal signify? And how can such a promise of infinite love be made within the bounds of a finite life? In attempt to answer…

The subject of this thesis, ‘Approach to Markov Operators on Spaces of Measures by Means of Equicontinuity’, combines an analytical and probabilistic approach to Markov operators.

On January 30th, Lennart van der Velden succesfully defended his doctoral thesis and graduated. The Leiden University Centre for Linguistics congratulates Lennart on this great result.

Death’s Social and Material Meaning beyond the Human is edited by Jesse D. Peterson, Natashe Lemos Dekker and Philip R. Olson

In a promotional video for the SUNRISE initiative, prof. Huub de Groot explains the impact and ideas behind artificial photosynthesis.

On 19 November 2018, the American Bar Association (ABA), Section of Antitrust Law organized a teleconference “Sports and Antitrust: Breaking the Ice”.

Geometrical patterns serving as decorations do more than just that; they always have a meaning, according to art historian Arthur Crucq. Doctoral defence 17 May.

Presents a novel philosophical account of psychedelic experiences, arguing that they can be induced by means other than psychedelics — such as meditation and yoga.

Promotor: J. Zaanen

A new NMR microscope gives researchers an improved instrument to study fundamental physical processes. It also offers new possibilities for medical science, for example to better study proteins in Alzheimer patients’ brains. Publication in Physical Review Applied.

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What is the first thing you think of when you hear the word UN? Is it just the Security Council and the ‘blue helmets’ or is there more to it? These are some of the questions tackled by the Chair’s research group.

A collection of newly written chapters by various specialists from different disciplines (with a background in philosophy) on the subject of free will as it is discussed in their (inter)disciplinary field.

In which way and to which extent is integration articulated in concept maps and which factors affect the resulting concept maps? By which factors is the perceived usefulness of such concept maps affected?

This study is the first to directly relate brain development to sex differences and school performance. The results debunk the myth that brain development is slower in boys.

Promotor: P. J. J. Hooykaas Co-promotor: B. S de Pater

Open Educational Resources (OER) have the potential to change teaching in Higher Education, but adoption is low despite the growing amount of resources available. The current project aims to investigate if and how teacher communities can foster adoption of OER in curricula.

Increasing the efficiency of gene targeting (GT) as a genome editing tool in plants has been an important goal in plant biotechnology.