Constraint multi-objective optimization with a limited budget for function evaluations is challenging. This thesis tackles this problem by proposing new optimization algorithms. These algorithms are applied on holistic ship design problems. This helps naval architects balance objectives like cost, efficiency,…

Electrocatalysis allows for storing electricity or converting it into chemical bonds, producing chemical building blocks and fuels using renewable resources.

The research presented in this thesis makes use of small molecules (as H2 , D2 and O2 ) on well-defined single crystal surfaces (flat Pt(111), flat Cu(211) and curved Pt(111)) to elucidate the role of surface structure and degrees of freedom in the reactant in specific surface reactions.

Hydrodesulfurization (HDS) is an ubiquitous part of oil refining that ensures that fuels are cleaned of impurities and environment release of pollutants such as SOx and NOx gasses are minimized.

The electrochemical oxygen reduction reaction (ORR) is an essential half-reaction for the utilization of hydrogen as a sustainable fuel, via the conversion of hydrogen to electrons and protons facilitated by the ORR. In the most common fuel cells, the ORR is requires high loadings of non-abundant platinum…

Plants and soils from natural ecosystems harbor great diversity of soil microorganisms, which could potentially contribute to the sustainability of horticulture. The knowledge about using wild plant species and soil from natural ecosystem to improve the crop health will advance the application of ecological…

With increasing carbon dioxide levels in the atmosphere and their detrimental effect on the global climate, modern society needs to push for more renewable energy sources. Storing widely accessible and abundant solar energy in chemical bonds in the form of molecular fuel via artificial photosynthesis…

Heterogeneous catalysis is one of the fundamental processes of modern life, being common in industrial refinery and hydrogen vehicles, all the way to the living cell. The dissociation of H2 on Cu(111) is an important benchmark system for studying heterogeneous catalysis, with a large and varied amount…

Food waste is a defining inefficiency of the modern food system, with profound implications for resource use, climate change, and circular economy transitions. This dissertation examines food waste through two complementary lenses: the prevention of avoidable food waste and the valorization of unavoidable…

Promotor: E. Bouwman, Co-Promotor: S. Bonnet

Metals surfaces form a group of effective catalysts for the reaction of small molecules such as hydrogen (H2).

To meet the rising demand for minerals driven by the global shift to clean energy technologies, ensuring responsible and resilient supply chains is critical. Minerals like cobalt, lithium, and nickel for batteries, neodymium and zinc for wind turbines, and indium for solar panels are essential.

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

Ben jij een nieuwsgierige en enthousiaste student en wil je meer naast je studie doen? Dan is het honoursonderwijs misschien wel iets voor jou.

This thesis addresses the challenge of sustainable urban development by analyzing the interplay between green and grey infrastructure to optimize resource use and ecosystem services.

This thesis investigates catalytic reactions at the atomic scale using scanning tunneling microscopy (STM), with a focus on Fischer–Tropsch synthesis, a key industrial process that converts hydrogen and carbon monoxide into liquid fuels.

Over the past two centuries, socioeconomic development has improved material living standards but has also intensified environmental pressures, including climate change and biodiversity loss.

Conventional food supplies procured from rural areas are increasingly vulnerable to disruptions caused by extreme weather, geopolitical instability, and logistical bottlenecks.

De master Recht & Bedrijfskunde focust op de juridische aspecten van een bedrijf. Niet alleen zaken als arbeidsrecht, maar ook ondernemingsrecht en fiscaal recht komen aan bod. Je doet kennis op over alle relevante raakvlakken van het recht in het bedrijfsleven.

Ons onderwijsaanbod is breed en divers. Hieronder vindt u alle informatie over de vakken die door de afdeling Bedrijfswetenschappen worden verzorgd. Als u op een vak klikt, wordt u doorgeleid naar de studiegids.

Promotor: A.P.IJzerman, Co-Promotor: L.H. Heitman

Quantum computing is an emerging technology, which holds the potential to simulate complex quantum systems beyond the reach of classical numerical methods.Despite recent formidable advancements in quantum hardware, constructing a quantum computer capable of performing useful calculations remains challenging.In…

Onderzoeksgroepen in het Quantum Matter & Optics onderzoeksprogramma onderzoeken elektronische eigenschappen van interacties van materie en lichtmaterie, met de nadruk op quantuminformatie.

This thesis is based on five papers on several topics.

Protoplanetary disks are the gas and dust environments where planetary systems form around young stars. Using observations from the Atacama Large Millimeter/submillimeter Array (ALMA) this thesis analyses the gaseous molecular reservoir, using multiple tracers to resolve the 3D structure of protoplanetary…

Dit op casestudies gebaseerde Engelstalige boek over multivariate analyse voor gevorderde studenten in de geesteswetenschappen legt de nadruk op beschrijvende, exploratieve analyses van verschillende soorten datasets uit een breed scala van subdisciplines, waarbij het gebruik van multivariate analyse…

We are living in an information era where the amount of image and video data increases exponentially.

Food security is challenged by a growing global population and by climate change. Drought and soil salinity are considered the most important ones that inhibit crop yield and distribution. Worryingly, climate change is predicted to increase not only their frequency and severity, but also their co-occurrence,…

Galaxies form and evolve through close interaction with their surroundings. As a result, the heavy elements ('metals') that are synthesized in stars, are found both inside and outside galaxies.

This thesis studies operator-algebraic aspects of subproduct systems, a generalization of product systems of Hilbert spaces.

De tweejarige masteropleiding Physics wordt aangeboden door het Leids Instituut voor Onderzoek in de Natuurkunde. De opleiding is theoretisch en experimenteel. Er is ruime aandacht voor onderzoekstraining. Ook bieden we veel keuzemogelijkheden en op maat gemaakte, individuele studieprogramma’s.

Leren om onderzoek te doen is een goede voorbereiding op wetenschappelijk onderwijs. De Universiteit Leiden helpt je daarom graag op weg om profielwerkstuk te schrijven waar je trots op kunt zijn.

This thesis mainly focuses on cross-modal retrieval and single-modal image retrieval via deep learning methods, i.e. by using deep convolutional neural networks.

Leiden University’s Academic Challenge

De Leiden Slavery Studies Association (LSSA) is toegewijd aan het bevorderen van een beter begrip van slavernij en post-slavernij in elke periode en elk geografisch gebied.

Software development is a complex process. It is important that software products become stable and maintainable assets.

This thesis covers several aspects of quantum algorithms for near-term quantum computers and its applications to quantum chemistry and material science.

Elke week organiseert ISGA de Research Seminar Series waarin onderzoek van zowel medewerkers van ISGA als van externen aan bod komt.

Detecting nanoscopic objects plays an important role in nanoscience in particular, in the rapidly growing field of nanobiology. The forebear to modern super-resolution microscopy for single molecule investigation, is fluorescence microscopy.

This thesis covers various applications of topology in condensed matter physics and quantum information.

Promotor: Prof.dr. H.L.V. Linnartz

Promotor: Prof.dr. E.J.J. Groenen, Co-Promotor: M. Huber

Na het afronden van de bacheloropleiding volgen verreweg de meeste studenten de masteropleiding.

De Una Europa Clusters brengen vooraanstaande deskundigen en ervaren personeelsleden van de talrijke academische en professionele diensten van de Una Europa -partners samen.

De Swahilikust kent een lange geschiedenis van transoceanische islamitische verbindingen die teruggaat tot de 25e eeuw. Toch heeft de boekdrukkunst de wereld veranderd; niet alleen de onze. In dit project worden unieke vormen en archieven van intellectuele geschiedenis ontrafeld die vanuit Zuid-Zuid-verbindingen…

Hieronder vind je de antwoorden op een aantal veelgestelde vragen over toelating tot de klinische specialisaties van de Master Psychologie.

Onderstaand een overzicht van alle vakken die door de afdeling Economie worden verzorgd.

What are the pressing issues of our time, and how can different disciplines come together to address them? Studium Generale and Leiden University College (LUC) present the Global Challenges series: events that bring together researchers from LUC and experts from other disciplines to tackle a shared…