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.

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

In this thesis,

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.

Sound is everywhere in the marine environment and hearing is therefore a very important for stimuli for fish. They use sound for orientation and communication, during migration, aggregation and spawning, but also for detection of prey and predators.

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

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.

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).

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

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…

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…

Tot deze subcollectie behoren:

Promotie

Promotor: K.H. Kuijken

Does a mid-season fire impact invertebrate populations?

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.

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

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

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

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

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

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

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

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

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

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