Hybrid zones occur where two species meet and produce offspring (hybrids). Typically, hybrids show a considerable reduction in fitness. In this thesis two hybrid zones are treated.

This dissertation explores how Large Language Models (LLMs) can effectively and responsibly contribute to complex decision-making processes. By combining AI and human intelligence, Hybrid Intelligence (HI) emerges, allowing the strengths of both humans and machines to be utilized.

Promotor: P.J.J. Hooykaas, Co-Promotores: P.B.F. Ouwerkerk, M. Wang

This thesis investigates how quantum, quantum-inspired, and hybrid quantum-classical computation can enhance key points of the automated machine learning (AutoML) pipeline under the constraints of noisy intermediate-scale quantum (NISQ) devices.

A Josephson junction is a device where a thin insulating barrier or a nanostructure is placed between two superconducting leads. Such a junction is essential to superconducting qubits that store quantum information due to its anharmonic spectrum.

Metal complexes and 2D materials like graphene were combined to produce structures that can function as sensors.

Promotor: H.J.M. de Groot

Een vergelijkende analyse van legitimeringsstrategieën in drie landen: Rusland, Venezuela en de Seychellen.

'Foundations 1' takes place on 1-3 March. Do you want to learn more about different types of sources and methods for source analysis in the Dominican convent in Huissen? Register now by sending an email to ozsmed@hum.leidenuniv.nl!

From 16 to 19 September 2021 a hybrid conference will take place on animation in the Middle Ages. This conference is a cooperation between the University of Bergen (Norway) and the A. Zelwerowicz National Academy of Dramatic Art in Warsaw, Branch Campus in Bialystok (Poland).

Mmmonk en het Henri Pirenne Instituut voor Middeleeuwse Studies (UGent) organiseren eind 2024 de tweede editie van Mmmonk School: Lessen voor gevorderde beginners rond het middeleeuwse boek. Mmmonk School biedt een interdisciplinair praktijkgericht programma over middeleeuwse Vlaamse manuscripten. Experts…

In this project, researchers from computer science, law, psychology, and public administration research in practice how artificial intelligence (AI) can be leveraged to make decision-making in the security domain more effective, while also keeping it safe and accountable.

Rector magnificus Carel Stolker neemt op 8 februari afscheid. Als er één thema als een rode draad door zijn carrière loopt, dan is het de verbinding tussen universiteit en maatschappij. In deze serie afscheidsgesprekken gaat Stolker nog eenmaal in gesprek met mensen van binnen en buiten de universiteit.…

Triplet superconductivity refers to a condensate of equal-spin Cooper pairs (pairs of electrons with equal spin).

Tuberculosis is a major global health problem caused by the Mycobacterium tuberculosis complex, claiming more than a million lives annually.

Op donderdagmiddag 15 mei 2025 organiseert Universitaire Bibliotheken Leiden het symposium ‘De Middeleeuwen als inspiratiebron’. Aanleiding voor dit symposium is de publicatie van het rijk geïllustreerde publieksboek 'Schatten op schrift, 50 manuscripten uit middeleeuws Europa'.

Theoretisch onderzoek geeft ons niet altijd de beste oplossing voor een probleem in de maatschappij. Dit is de boodschap die wordt verkondigd tijdens de eindpresentaties van de Master Honours Class 'Social Innovation in Action'.

Effective policy-making requires understanding what truly causes a problem. Only then can policymakers develop targeted interventions that achieve desired outcomes.

Prof.dr. J. Memelink

Het Institute of Security and Global Affairs (ISGA) nodigt u van harte uit voor haar openingsconferentie ‘Towards new strategies for contemporary security challenges’ van woensdag 9 tot vrijdag 11 november 2016 in Den Haag.

Tijdens deze studiedag zullen – onder voorzitterschap van prof. mr. drs. Mariëlle Bruning – de bevindingen uit de beide dissertaties over gesloten jeugdhulp worden gepresenteerd en zal er vanuit verschillende perspectieven worden gereflecteerd op deze bevindingen en aanbevelingen.

Polymyxins are clinically used antibiotics, discovered in mid-20th century. Once abandoned due to excessive nephrotoxicity, they are now used increasingly to address infections caused by multi-drug resistant Gram-negative bacteria.In this thesis, we describe the development and synthesis of analogues…

A sustainable resource management is an essential aspect to satisfy the current human needs without compromising the needs of future generations.

Hybride intelligentie (HI) is de combinatie van menselijke en machinale intelligentie, waarbij het menselijk intellect wordt uitgebreid in plaats van vervangen. HI houdt rekening met de menselijke expertise en intentionaliteit bij het nemen van zinvolle beslissingen en het uitvoeren van passende acties,…

Promotor: P.G.L. Klinkhamer, Co-Promotores: K. Vrieling, P.P.J. Mulder

Promotor: Prof.dr. P.G.L. Klinkhamer, Co-Promotor: T.J. de Jong

Na bijna veertig jaar keert het tweejaarlijkse congres van de Internationale Federatie van Europees Recht (FIDE) terug naar Nederland!

Quantum annealing belongs to a family of quantum optimization algorithms designed to solve combinatorial optimization problems using programmable quantum hardware. In this thesis, various methods are developed and tested to understand how to formulate combinatorial optimization problems for quantum…

A new type of tripodal squaramide-based supramolecular hydrogels is developed and studied.

We use DNA strands to stabilize few-atom silver clusters, which show unique optical and chemical properties. This thesis involves the study of these constructs for various applications.

Belangrijk om te weten: wie oefent het gezag uit over het kind?

The long-held desire - to link structure directly to function and to explain molecular mechanisms based on basic chemical or physical principles - is finally coming closer, satisfying not only our scientific curiosity but also offering new solutions to the many challenges in the field of health, energy…

This thesis pioneers diatom molecular identification and quantification through genome-scale methods, with four key aims: (i) reviewing DNA/RNA sequencing methods in aquatic biomonitoring to highlight their strengths and limitations;

The type-IV secretion system (T4SS) is a machinery able to transfer DNA and proteins between bacteria and in certain cases also to eukaryotic cells.

This thesis describes the development and validation of new high-contrast imaging techniques, with the ultimate goal of enabling the next generation of instruments for ELT-class telescopes to directly image Earth-like extra-solar planets orbiting around nearby stars.

Promotor: J. Aarts

In this thesis, I targeted the orchid genus Lepanthes, one of the six genera of angiosperms that surpasses 1,000 species in the Neotropics, as a study model to investigate the evolutionary processes that promoted species diversifications.

An interdisciplinary collection of the best international scholarship on Muslim youth.