765 zoekresultaten voor “policy evolution” in de Publieke website
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Orion's Dragon and Other Stories
Stellar feedback is a crucial ingredient in the evolution of galaxies.
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High-contrast imaging polarimetry of exoplanets and circumstellar disks
Understanding the formation and evolution of planetary systems is one of the most fundamental challenges in astronomy. To directly image and study young exoplanets and the circumstellar disks they form from, dedicated high-contrast imaging instruments are built.
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Radio galaxies near the epoch of reionisation
This thesis explores the theoretical and observational properties of distant massive galaxies that harbour active black holes in their centres and shine brightly at radio wavelengths.
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Sizing up protoplanetary disks
This thesis focuses on protoplanetary disks: flattened structures of gas and dust around young stars in which planets are expected to form and grow.
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Orchid mycorrhizal interactions: evolutionary trajectories and ecological variations
The mycorrhizal symbiosis is among the most widespread species interactions on Earth. This thesis focuses on orchid mycorrhiza, a unique mycorrhizal type that has caught scientists’ attention for centuries.
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The music of language: exploring grammar, prosody and rhythm perception in zebra finches and budgerigars
Promotor: C.J. ten Cate
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Clues from stellar catastrophes
Promotores: S.F. Portegies Zwart, E. M. Rossi
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Extremely loud & incredibly far: observing radio bright AGN into the cosmic dawn
In this thesis new methodologies are developed for the detection and systematic study of radio sources in the early universe. This allows us to gain a deeper understanding of the formation and evolution of galaxies, the activity of supermassive black holes, and the final phase transition of our universe:…
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Combining classic and novel tools in the study of Historical Collections of Chinese Materia Medica in the Netherlands
Chinese materia medica (CMM), comprising a diverse array of natural substances from plants, animals, and minerals, has been integral to Traditional Chinese Medicine (TCM) throughout history. This study investigates the dynamic evolution of CMM, noting shifts in species for improved therapeutic effects…
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Footprint family: Concepts, classification, integration, and benchmarking against planetary boundaries
How to bring together different footprints into an integrated family and what are the synergies? What are the roles of inventory analysis and characterization in measuring individual footprints and how these affect a footprint family? How to benchmark environmental footprints against related planetary…
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Amerikaans buitenlands beleid en liberalisme
The NWO-funded Vidi project “American foreign policy and liberalism” challenges the idea that the United States has created and sustained a “liberal international order” since World War II. It instead explores the ways in which illiberal ideologies – such as those underpinning racial hierarchy at home…
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Public Administration
Public Administration is a major refereed journal publishing articles on public administration, public policy and public management.
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Data Centres for Natural Recources and Products
Creating information portals for support of European environmental policy.
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The gendered micropolitics of hiding and disclosing: assessing the spread and stagnation of information on two new EMTCT policies in a Malawian
Announcement of a new publication by Janneke Verheijen, lecturer at the Institute of Cultural Anthropology and Development Sociology.
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Co-benefits & Co-damages of environmental policies related to climate change and long-range transboundary air pollution
Using the principles of Industrial Ecology in Environmental Policy making in two cases: transition to a hydrogen economy and chlorinated compounds.
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Dilemma's van Diversiteit - diversiteitsbeleid en -praktijk
Hoe kunnen we sociale cohesie bevorderen in een samenleving die cultureel en religieus divers is?
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Shaping Massive Galaxies: the structural evolution of galaxies across
Promotie
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Galactic substructures as tracers of dark matter and stellar evolution
Promotie
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CarbonCap
In the CarbonCap project, consumption oriented technological options and policy measures are identified as an addition to the present EU and world climate policy.
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Beschadigd vertrouwen
Op 7 december 2021 verdedigde Georgina Kuipers het proefschrift 'Beschadigd vertrouwen'. Het promotieonderzoek is begeleid door prof.mr. W. den Ouden en prof.dr. M.A. van der Steen (EUR).
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Exiopol
A new environmental accounting framework using externality data and input-output tools for policy analysis.
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Europees beleid en beleidsuitvoering
Hoe kunnen we de uitvoering van EU beleid begrijpen en welke uitdagingen spelen daarbij een rol?
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The holographic glass bead game: from superconductivity to time machines
Promotores: Prof.dr. J. Zaanen, Prof.dr. K.E. Schalm
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The Demographics of Protoplanetary Disks: from Lupus to Orion
The work presented in this thesis is based on ALMA surveys of protoplanetary disks in three star-forming regions: Lupus, OMC-2, and NGC 2024.
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Evolutionary diversification and historical biogeography of Orchidaceae in Central America with emphasis on Costa Rica and Panama
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.
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Evolutionary adaptability of β-lactamase: a study of inhibitor susceptibility in various model systems
β-Lactamases are enzymes that can break down β-lactam substrates, such as antibiotics, preventing the use of these antibiotics for the treatment of various infectious diseases. However, some compounds, β-lactamase inhibitors, can block these enzymes allowing for possible treatments using a combination…
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Measuring gold molecular gas across cosmic time
Tracing the evolution of the molecular gas content in galaxies is critical for a complete understanding of galaxy formation and evolution, as it provides the direct fuel for star formation. Studies of high-redshift (z>1) molecular gas reservoirs, most commonly traced by carbon monoxide (CO), have seen…
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Tim Verdoes
Faculteit Rechtsgeleerdheid
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Sebastian Fajardo Bernal
Wiskunde en Natuurwetenschappen
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Pre-Neanderthalers beheersten complexe technieken
Een internationaal onderzoeksteam met Leidse archeologen heeft overtuigend bewijs geleverd dat pre-Neanderthalers 300.000 jaar geleden over een hoge mate van cognitieve complexiteit beschikten.
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Algorithm for Structural Variant Detection
Structural variants (SVs) are the hidden architecture of the human genome, and are critical for us to understand diseases, evolution, and so on.
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Leidse onderzoekers adviseren Amerikaanse diplomaten
De Leidse politicologen Yvonne Kleistra en Niels van Willigen hebben het State Department van de Verenigde Staten geadviseerd over beleidsevaluatie. Uitgangspunt daarbij was een wetenschappelijk model dat Kleistra en Van Willigen hebben ontwikkeld op grond van werk voor het Nederlandse Ministerie van…
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Een rariteitenkabinet voor het wetenschapsbeleid
Hoe weet de overheid of wetenschapsbeleid het gewenste effect heeft? Volgens hoogleraar Barend van der Meulen zijn een variëteit aan kennis over de effectiviteit en goed verzamelen ervan belangrijker dan een strikte wetenschappelijke methode. Oratie op 27 maart.
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Indicators for "decoupling"
Indicators to measure progress in de-linking economic growth and environmental pressure.
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Learning from small samples
Learning from small data sets in machine learning is a crucial challenge, especially when dealing with data imbalances and anomaly detection. This thesis delves into the challenges and methodologies of learning from small datasets in machine learning, with a particular focus on addressing data imbalances…
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Mariëlle Kleijn op Paradise.fm over prostitutie op Curaçao
In 2020 sloot Campo Alegre, het grote openluchtbordeel op Curaçao. Inmiddels willen verschillende politieke partijen dit bordeel weer openen. Promovenda Mariëlle Kleijn praat hierover op Paradise.fm.
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Nieuwe planten produceren zonder zaaien
Zonder een gewas opnieuw te zaaien toch nakomelingen produceren, die zelfs groter kunnen zijn dan de ouderplant. Volgens Leidse onderzoekers is dat mogelijk door het overstimuleren van één gen. Daarmee verjongt een cel en gaat deze terug naar de embryonale fase.
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Levensverlengend gen bij planten ontdekt
Oogst na oogst binnenhalen van rijstveld, zonder nieuwe rijstplanten te zetten? Door een ontdekking komt dit scenario misschien wel dichterbij. Leidse wetenschappers hebben een gen ontdekt waarmee ze eenjarige planten na het bloeien opnieuw laten groeien, in plaats van dat de planten sterven. Publicatie…
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Slangengifklieren in het lab gekweekt
Voor het eerst hebben onderzoekers uit Utrecht, Leiden, Amsterdam, Liverpool en Maastricht mini-orgaantjes van slangengifklieren in het lab gekweekt. De groepjes cellen kunnen gifmoleculen produceren. Dit is een belangrijke stap om slangenbeten beter te behandelen. Publicatie in toptijdschrift Cell…
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‘Onbelangrijk’ plantengen blijkt wel degelijk essentieel
Leidse biologen hebben aangetoond dat een gen dat aanwezig is in planten, dieren en gisten wel degelijk een belangrijke rol speelt in planten, al werd daar jaren anders over gedacht. Zonder het gen blijkt de ontwikkeling van vaatweefsel in planten niet goed op gang te komen. Publicatie in Nature Plants…
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Evolution and development of orchid flowers and fruits
Promotie
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Adaptive Semi-Strong Ecosystem Dynamics
Developing methodes to understand the evolution of patches in natural ecosystems
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South American population history revisited: multidisciplinary perspectives on the Upper Amazon
This project, South American population history revisited: multidisciplinary perspectives on the Upper Amazon (SAPPHIRE), investigates population dynamics in western South America on the basis of traces in the geographical, genetic, archaeological, ethnological, and linguistic record.
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Evolutionary diversification of Nepenthes (Nepenthaceae)
Promotor: Erik F. Smets, Co-promotores: Barbara Gravendeel, Niels Raes
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Radio galaxies at low frequencies: high spatial and spectral resolution studies with LOFAR
Promotor: H.J.A. Röttgering, Co-promotor: G.K. Miley
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Observing what cannot be observed: computational electrochemistry from carbon to hydrogen
In this thesis, we consider various (electro)chemical phenomena at surfaces and nanoparticles and their underlying atomistic processes, which we studied using first-principles methods such as density functional theory.
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Patterns in natural systems
Promotor: A. Doelman, Co-promotores: P.J.A. van Heijster; A. Zagaris
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Non-linear astrochemical kinetics: theory and applications
This Thesis shows discoveries in non-linear astrochemical kinetics as well as a deeper analysis of dark clouds chemistry.
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Turtles all the way down: multiscale simulations connecting star and planet formation
The formation of stars and planets happens over multiple scales, which can interact. In particular, planet formation happens in the dense, complex environment of star forming regions.
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Evolution of Molecular Resistance to Snake Venom α-Neurotoxins in Vertebrates
Promotie