Sökning: "Natural experiment"
Visar resultat 6 - 10 av 1476 avhandlingar innehållade orden Natural experiment.
6. Prosocial Behavior, Social Interaction and Development: Experimental Evidence from Vietnam
Sammanfattning : Paper 1. Funding a New Bridge in Rural Vietnam: A Field Experiment on Conditional Cooperation and Default Contributions The ability to provide public goods is essential for economic and social development, yet there is very limited empirical evidence regarding contributions to a real local public good in developing countries. LÄS MER
7. The ecological significance of sexual reproduction in peat mosses (Sphagnum)
Sammanfattning : Peat mosses (Sphagnum) are widely distributed and are a major component of mire vegetation and peat throughout the boreal and temperate regions. Most boreal Sphagnum species regularly produce sporophytes, but the ecological role of the spore has been questioned. LÄS MER
8. Ultracold rubidium atoms in periodic potentials
Sammanfattning : This thesis includes both experimental and theoretical investigations, presented in a series of eight papers. The experimental part ranges from the construction procedures of an apparatus for Bose-Einstein condensates, to full scale experiments using three different set-ups for ultracold atoms in optical lattices. LÄS MER
9. Searches for exotic stable massive particles with the ATLAS experiment
Sammanfattning : This thesis presents two signature-based searches for exotic long-lived particles using experimental data collected by the ATLAS experiment at the Large Hadron Collider (LHC) at CERN. At the LHC, proton-proton collisions take place at the world-record center-of-mass energy of 7 TeV and luminosities of up to 3×1033 cm-2s-1 . LÄS MER
10. Observations on the nature of computer security intrusions
Sammanfattning : .... LÄS MER
