2,876 search results for “complexity” in the Public website
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Complex Patterns in Streams
The goal of the project is the development of stream mining techniques for complex patterns such as graphs. We will try to extend the existing state-of-the-art techniques into two, orthogonal directions: on the one hand, the mining of more complex patterns in streams, such as sequential patterns and…
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Correlates of Complexity
Essays in Archaeology and Assyriology Dedicated to Diederik J.W. Meijer in Honour of his 65th Birthday
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Breaking of ensemble equivalence for complex networks
For many system in statistical physics the microcanonical and canonical ensemble are equivalent in the thermodynamic limit, but not for all.
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Probing complex problems
Issues such as climate change, the depletion of natural resources or social inequality are too complex to be addressed from a single scientific discipline or by a single country. Leiden University has the expertise to bring the resolution of these enormous problems a small step closer.
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Complex multiplication of abelian surfaces
Promotor: Peter Stevenhagen
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Dual Complexes of Semistable Varieties
This thesis is comprised of three chapters covering the theme of studying semistable varieties by looking at their dual combinatorial objects.
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Leiden Complex Networks Network (LCN2)
The Leiden Complex Networks Network (LCN2) aims at bringing together scientists from different disciplines, based on a common interest in both theoretical models and empirical analyses of networks and graphs.
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Understanding protein complex formation: The role of charge distribution in the encounter complex
Protein–protein complexes are formed via transient states called encounter complexes that greatly influence the formation of the stereospecific complex.
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Biological, Soft and Complex Systems
We study the physics of a broad range of biological and soft materials
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Many objective optimization and complex network analysis
This thesis seeks to combine two different research topics; Multi-Objective Optimization and Complex Network Analysis.
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Bugs and birds and landscape complexity
What invertebrates are available to feed nestlings in an agricultural landscape of varied complexity?
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Lipid bilayers decorated with photosensitive ruthenium complexes
Promotor: E. Bouwman, Co-promotor: S. Bonnet
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Understanding the complexity of intelligence problems
The complexity of an intelligence problem determines to a great extent the certainty that can be provided by intelligence and security services.
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Copper trispyrazolylborate complexes for ethene detection
Promotor: E. Bouwman Co-Promotor: S. Bonnet
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Mining Sensor Data from Complex Systems
Promotor: J.N. Kok, Co-Promotor: A.J. Knobbe
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Biomimetic Copper Complexes for Energy Conversion Reactions
Hetterscheid
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Imaging complex model catalysts in action
From surface science towards industrial practice using high-pressure scanning tunneling microscopy.
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Microvasculature in Microfluidics: matching complexity with compatibility
In vitro disease models play a fundamental role in drug research. They enable the systemic identification and validation of disease mechanisms and the discovery of possible drug targets. However, more than often, drug candidates that are identified in vitro fail in the later clinical stages of drug…
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ANO-NET: Anonymity in Complex Networks
This project develops methods for ensuring the anonymity of individuals in social network data.
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Bayesian uncertainty quantication in complex models
The aim of this project is to determine in which cases uncertainty statements resulting from a Bayesian statistical analysis can be trusted.
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Reactivity of Cobalt(II)-Dichalcogenide Complexes
PhD Defence
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Hidden Complexities of the Frankish Castle
Social Aspects of Space in the Configurational Architecture of Frankish Castles in the Holy Land, 1099-1291
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The Saint-Servatius complex in Maastricht
The Vrijthof excavations (1969-1970)
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Imaging of alkyne-functionalized ruthenium complexes for photoactivated chemotherapy
In photoactivated chemotherapy (PACT), a biologically active compound is caged by a light-cleavable protecting group.
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Diversity in the globally intertwined giant barrel sponge species complex
This thesis describes the genetic and prokaryotic diversity of giant barrel sponges.
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The Metallophilic Interaction between Cyclometalated Complexes: Photobiological Applications
In this thesis, the researcher developed a nanosystem based on the metallophilic Interaction between cyclometalated complexes.
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Accelerating the Photocatalytic Water Splitting in Catalyst−Dye Complexes
As a virtually inexhaustible source, solar energy plays a major role in future global energy scenarios.
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Iron complexes as electrocatalysts for the water oxidation reaction
In this dissertation, the synthesis and characterization of a series of iron complexes based on different ligand platforms are described.
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The international tax system as a complex system
Complex systems can be characterized as systems in which multiple components interact with each other, often in non-linear ways. The main goal of this research will be to investigate if and how the international tax system can be defined and modelled as a complex system. Approaching the international…
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Analysis of sub-visible particles in complex injectable formulations
Promotors: W. Jiskoot; G.J. Witkamp, Co-promotor: M.R. Nejadnik
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1,2-cis-glycosylations: method development and synthesis of complex oligosaccharides
Promotor: G.A. van der Marel, Co-promotor: D.C. Codée
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Biomimetic redox reactions of the Cu(II) μ-thiolate complex
Promotor: Prof.dr. E. Bouwman
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Oxidation catalysis on Pt and Au: complexity of simple chemistry
Promotor: J.W.M. Frenken Co-Promotores: I.M.N. Groot; L.B.F. Juurlink
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Blowup in the complex Ginzburg-Landau equation
Promotor: A. Doelman, Co-promotor: V. Rottschäfer
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Deciphering the complex paramagnetic NMR spectra of small laccase
Multicopper oxidase, laccase, can efficiently reduce oxygen to water and are mostly used in the enzymatic biofuel cells.
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the invisible visible: paramagnetic NMR and the transient protein complex
Promotor: Prof.dr. M. Ubbink
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Towards in-cell structural study of light-harvesting complexes : an investigation with MAS-NMR
Light-Harvesting Complex II (LHCII) is responsible for light absorption and excitation energy transfer in plants and photosynthetic algae, while in high light it undergoes conformational changes by which it quenches excitations to prevent photodamage.
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Charge transport properties of Ru-complex molecules: the influence of humidity
I will give a general introduction to the field of molecular electronics, its history, methods and challenges. I will also introduce the subject of my investigation and provide a brief outlook to the remainder of our thesis.
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addition reactions in interstellar ice - new pathways towards molecular complexity in space -
Promotor: Prof.dr. H.V.J. Linnartz, Co-Promotores: S. Ioppolo, H.M. Cuppen
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Caging ruthenium complexes with non-toxic ligands for photoactivated chemotherapy
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.
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of productive and futile encounters in an electron transfer protein complex
PNAS publication on protein encounter complexes
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Determining the structure of a chemotaxis kinase complex with receptor mimetics and cryo-EM
Can we determine the 3D structure of a chemotaxis core complex using single-particle reconstructions via cryo-EM?
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The structure of the cytochrome P450cam-putidaredoxin complex determined by paramagnetic NMR spectroscopy and crystallography
Promotor: Prof.dr. M. Ubbink
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Inextricable ties between chemical complexity and dynamics of embedded protostellar regions
Promotor: E. F. van Dishoeck, Co-promotor: C. Walsh
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The formation of complex organic molecules in dense clouds-Sweet results from laboratory
Large areas of space are filled by molecular clouds that consist of gas and dust grains that are the remnants of dead stars. When these clouds start collapsing, the decreasing temperature and increasing density cause gas particles to start accreting onto dust grain surfaces.
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investigation of the photoprotection mechanism of Light Harvesting Complex II
Solar energy is used by photosynthetic organisms to drive energy required cellular processes. Is absorbed by two groups of pigments, located in the LHCs.
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Oxygen Reduction Catalyzed by a Copper(II) Tris(2‐pyridylmethyl)amine Complex through a Stepwise Mechanism
The mechanism of the electrochemical reduction of dioxygen by a mononuclear pyridylalkylamine copper complex was investigated (see picture). It was shown that in neutral aqueous solution dioxygen undergoes stepwise reduction, wherein hydrogen peroxide plays a key role. The rate constants determined…
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op complexiteit. Onderwijs voor het 'moeras' - Getting a grip on complexity. Education for the 'swamp'
How can pupils and students learn to get a grip on complex 'swamp situations'? Inaugural lecture in abbreviated form held by prof.dr.ir. Fred Janssen on the acceptance of the post of professor of science education at Leiden University on 19 June 2017.
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Policy Note Insecurity in Burkina Faso – beyond conflict minerals: The complex links between artisanal gold mining and violence
Policy Note Insecurity in Burkina Faso – beyond conflict minerals: The complex links between artisanal gold mining and violence
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The Archaeology of Syria – From Complex Hunter-Gatherers to Early Urban Societies (ca. 16,000 -300 BC)
This book is the first comprehensive presentation of the archaeology of Syria from the end of the Paleolithic period to 300 BC.