OB associations are loose groups of young, massive stars. They constitute the last stage of the massive starformation process, and the context in which new stars are formed.

Promotor: H.J.A. Rottgering, Co-Promotor: R.J. van Weeren

Promotor: Prof.dr. E.F. van Dishoeck, Co-Promotor: G.J. Herczeg

Veel universiteiten experimenteren momenteel met verschillende vormen van digitalisering: MOOCs, SPOCs, maar ook de inzet van YouTube video’s, online toetsen en andere digitale methoden in het universitaire onderwijs. Veel van deze onderwijsvormen zijn niet alleen digitaal, maar ook vrij toegankelijk…

In this thesis, we use low-frequency and high-frequency radio observations to address the following questions regarding quasars: is the radio loud/quiet quasar dichotomy real?

Three major cosmology-focused missions are planned for the next decade: the Euclid space telescope, the Vera C. Rubin Observatory in Chile, and the Nancy Grace Roman Space Telescope.

This thesis describes the Multi-site All-Sky CAmeRA (MASCARA), which consists of two small robotic telescope designed to detect exoplanets around the brightest stars in the sky.

In this thesis, the research focuses on the properties of dark matter and dark matter haloes and how they connect with the galaxies we can observe in the Universe.

Can we develop a platform for raw materials intelligence?

Kijk regelmatig op deze pagina voor meer informatie over het inpassen van duurzaamheid in het onderwijs van de Universiteit Leiden.

Het gebruik van ‘Big data’ is niet meer weg te denken binnen het wetenschappelijk onderzoek. Voor dit onderzoek maken we gebruiken van diverse grote databestanden.

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.

Promotores: Prof.dr. G.A. Persoon & Prof. dr. H.H. de Iongh

In this thesis,

Galaxies form and live inside dark matter haloes. As a consequence, they are exposed to the tidal fields generated by the surrounding matter distribution: this imprints a preferential direction to the galaxy shapes, which leads to a coherent alignment on physically close galaxies, called intrinsic a…

Does a high quality prairie restoration in an urban/agricultural landscape provide invertebrates necessary for a sustainable ecosystem?

Microfiches en microfilms op verschillende vakgebieden:

Promotie

Indicators to measure progress in de-linking economic growth and environmental pressure.

Even though more than 4000 extra-solar planets are known today, only a small fraction of these has been captured in an image. To better understand the planet formation mechanisms in solar-like environments we started the Young Suns Exoplanet Survey (YSES).

We have conducted a full spectral line survey of the 3-13 micron region of two massive protostars, AFGL 2591 and AFGL 2136, for the first time at high spectral resolution.

Tot deze subcollectie behoren:

Religion and ethnicity are inextricably linked in discourse within and about Central Asia. One common narrative suggests that as a result of differences between historically sedentary and nomadic populations, ethnic Tajiks and Uzbeks are naturally more religious and more likely to radicalise than their…

We analyse the link between media consumption and the attitudes toward people living with HIV/AIDS in Chile. We used data from a sample of 1000 people, obtained in the 2011 wave of the World Values Survey (WVS). We use a logistic binary regression model by maximum likelihood. Our results suggest that…

Promotie

Does a mid-season fire impact invertebrate populations?

Promotor: K.H. Kuijken

Op 1 april 2020 verdedigde Marc Broekema zijn proefschrift 'Cognitive Bias in the Judgment of Business Valuations and Valuators'. Het promotieonderzoek is begeleid door promotor prof. dr. J.I. van der Rest.

Promotor: E.F. Smets, Co-promotor: T.R. van Andel

Does roadside management in the mid-west USA increase invertebrate diversity similar to practices in Europe?

Promotor: Prof.dr. P. Stevenhagen, Prof.dr. K. Belabas (Univ. de Bordeaux)

A large diversity of exoplanetary systems has been found, but it is still unclear what drives this diversity.

Galaxies in the local Universe fall into two main categories of spirals and ellipticals. In this Thesis, we explore the structural evolution of galaxies into this bimodal distribution.

What invertebrates are available to feed nestlings in an agricultural landscape of varied complexity?

A century ago, it was unclear whether the stars in the sky were clustered in groups, or widely spread in the universe.

What invertebrates live in the fields and edges? Do the populations change with landscape complexity?

Of all the mass in our Universe, 80% is thought to consist of a hypothetical and invisible substance called dark matter (DM).

In 2021 communiceerde Bureau Algemene Bestuursdienst (Bureau ABD) het plan om hun visie op publiek leiderschap te vernieuwen. Om deze nieuwe visie nauw aan te laten sluiten bij de behoeften en uitdagingen uit de praktijk, én wetenschappelijk te onderbouwen is het Leiden Leadership Centre (LLC, Universiteit…

Promotie

Promotie

De Universiteit Leiden en het LUMC beschikken over unieke kennis uit onderzoek en onderwijs op het gebied van een gezonde leefstijl. Deze kennis willen wij verzamelen en nog beter inzetten dan nu al gebeurt.

Onderzoek naar representatieve bureaucratie heeft vaak de positieve prestatie-effecten bevestigd van bureaucratieën die de demografische kenmerken van hun cliënten weerspiegelen. Er is echter weinig bekend over de onderliggende mechanismen op individueel niveau die tot deze resultaten leiden.

Ethiopian wolves are endangered diurnal Afroalpine rodent hunters. I investigated the interaction between wolves, rodents and human land use in Borena Sayint National Park (BSNP), Abune Yosef and Aboi Gara in Ethiopia.

Promotor: M. Franx, Co-Promotor: I.F. Labbé

Promotors: Prof.dr. G.R. de Snoo, Prof.dr. G.A. Persoon, Prof.dr.ir. H.H. de Iongh