Hieronder vind je een overzicht van de publicaties van LAPP.

In this thesis, deep learning is studied from a statistical perspective. Convergence rates for the worst case risk bounds of neural network estimators are obtained in the classification, density estimation and linear regression model.

The main goal of the research described in this thesis was the development of new photoactivated chemotherapy (PACT) ruthenium(II) complexes bearing a non-toxic photolabile ligand.

The overall theme of this thesis is to complement the electrochemical data acquired in fuel cell research with in situ X-ray photoelectron spectroscopy (XPS) and soft X-ray absorption spectroscopy (XAS).

Promotores: E. van Dijk, G.R. de Snoo. Co-promotor: H. Staats

In this dissertation iron-based homogeneous catalysts were synthesized, characterized and investigated for water oxidation activity.

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.

In this thesis the links between allergy and intestinal health, the gut microbiome (GM), and external factors were studied by exploring the metabolome in longitudinal clinical studies and in vitro models.

Gedurende het weekend van 25 en 26 januari 2014 zijn twee leeuwen gezenderd in het Nairobi National Park in Kenia. Het park is vrij klein, 117 km2. Leeuwen verlaten regelmatig het park en bezoeken de buitenwijken van Nairobi in het Noorden en de plattelandsgebieden ten zuiden van het park. Deze ‘uitstapjes’…

Promotor: R. Tijdeman, Co-promotor: C. Kraaikamp

Op 16 juni 2020 verdedigde Andrea Varga haar proefschrift 'Establishing State Responsibility in the Absence of Effective Government'. Het promotieonderzoek is begeleid door promotoren prof. dr. N.J. Schrijver en prof. dr. F. Baetens (University of Oslo).

Before the large scale use of renewable energy sources can be implemented in our society, the storage of electrical energy needs to be tackled. Storage the energy as hydrogen via the reduction of protons is a good option.

Promotor: Prof.dr. J.W.M. Frenken

The dissertation offers new tools and insights to computation and modelling of topological phases, with an emphasis on the aperiodic setting.

Research

Global Environmental Extensions Multi-Regional Input-Output (EE-MRIO) analysis is often used to analyze how changes in global and national demand for products lead to socioeconomic and environmental impacts at the national level.

Onze onderzoeksgroep Intelligence and Security biedt een breed scala aan onderwijs- mogelijkheden die theoretische fundamenten combineren met praktische toepassingen op het gebied van inlichtingen en veiligheid.

We show that Kirchhoff ’s law of conservation holds for non-commutative graph flows if and only if the graph is planar. We generalize the theory of (Euclidean) lattices to infinite dimension and consider the ring of algebraic integers as such a lattice.

The main topic of this PhD thesis is the Arakelov ray class group of a number field, an algebraic object that contains both the ideal class group structure and the unit group structure.

We describe certain birational modifications of nodal relative curves over a regular base of arbitrary dimension.

Promotor: P. Stevenhagen, Co-promotor: R.M. van Luijk

Wat maakte het vroege islamitische rijk zo succesvol en hebben we het verhaal gemist door cruciaal bewijs te negeren? De Arabische veroveringen in de 7e eeuw veranderden de sociaal-politieke configuraties in het Middellandse Zeegebied en Eurazië voorgoed. Toch weten we niet echt hoe de Arabieren erin…

What is the effect of light at night on plant phenology and physiology, and how does this affect plant interactions with other species?

There are study programmes at LIACS that offer the opportunity to do an internship or research project, as part of the curriculum.

Promotie

In this thesis chemical and physical processes in the ice mantles on interstellar dust grains are studied.

This thesis is largely an experimental study on the formation of solid-state simple and complex organic molecules in the H2O-rich and CO-rich ice phases of dense interstellar clouds and dark cores.

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,…

Promotor: A. Doelman, Co-promotores: P.J.A. van Heijster; A. Zagaris

The application of nanomaterials in industrial processes and consumer products provides many societal benefits, but can also lead to the release of nanomaterials into the environment. The work in this dissertation aims to provide insights into the potential environmental impacts that may follow from…

Gold nanoparticles show surprisingly strong interactions with light in the visible range, which can be divided into scattering, absorption, and photoluminescence.

The work in this thesis describes the fundamental role of Lkb1 as a conductor of metabolism-related processes in zebrafish larvae.

Soil biodiversity is of great importance for the maintenance of multifunctionality in terrestrial ecosystems.

The focus of this thesis is on the technical methods which help promote the movement towards Trustworthy AI, specifically within the Inspectorate of the Netherlands.

Promotor: M.A.G.J. Orrit

Promotor: Prof.dr. M. Ubbink

Despite their ecological, cultural, and economic importance, lion (Panthera leo) populations in Kenya are declining rapidly due to retaliatory killings following livestock depredation, depletion of wild prey, habitat loss driven by human activities, climate change, and disease.

Op 11 juni 2020 verdedigde Sabine Witting haar proefschrift 'Child Sexual Abuse in the Digital Era: Rethinking Legal Frameworks and Transnational Law Enforcement Collaboration'. Het promotieonderzoek is begeleid door promotoren prof.mr. J.J. Sloth-Nielsen en prof.dr.mr. S. van der Hof.

Leids onderzoek naar bestraffing komt tot stand uit verschillende disciplines. Het onderzoeksproject kent een juridische, criminologische, sociaalwetenschappelijke en filosofische invalshoek.

What holds people together and what makes them willing to fit within larger political structures? Our project examines this question in the practices of dynastic rulership in Eurasia ca. 1300-1800.

Deelproject van

Op 1 juni 2022 verdedigde Tom Herrenberg het proefschrift 'Prosecutorial Discretion in International Criminal Justice'. Het promotieonderzoek is begeleid door prof.dr. P.B. Cliteur en prof.dr. B.R. Rijpkema.

Researchers from the Department of Economics - Kees Goudswaard, Koen Caminada, Marike Knoef, Pierre Koning and Olaf van Vliet - have been awarded a grant of one million euros by Instituut Gak to investigate self-sufficiency and social protection.

Early time-resolved experiments by Frauenfelder on the ensemble of the kinetic rebinding of CO to myoglobin molecules resulted in a stretched exponential relaxa-tion due to a very large spread of the reaction rates of individual molecules.

The bacterial cell wall is a nearly universal structure that offers protection and gives the cell its shape. However, environmental stressors, such as cell wall-targeting antibiotics and hyperosmotic conditions, can induce bacteria to shift to a wall-deficient state. It is unknown whether the lack of…

Despite the fact that gold nanoparticles (GNPs) are one of the most studied nanoparticles, there is still a necessity for new approaches allowing for effective protective coating to enable wider use of GNPs in biomedical applications.

Promotores: Prof.dr. S.J. Edixhoven, Prof.dr. E. Ullmo (University Paris-Sud)

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.

The expanding population and economic activity are driving up global energy consumption. Simultaneously, there is an urgent need to transition from fossil fuels to renewable sources to mitigate the climate crisis, primarily caused by fossil fuel combustion.

One of the key discoveries in exoplanet research over the past decade is the abundance of small planets in our Milky Way. Despite their high numbers, our understanding of their atmospheres remains limited, and it is unknown if they possess atmospheres at all.