Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 6 of 6 for “"collapse models"”.
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Investigating the foundations of quantum physics with optomechanical setups
… Among the alternatives to quantum mechanics, collapse models propose an objective modification of standard quantum theory to restore macrorealism at large scale. They predict a loss of coherence when scaling towards macroscopic systems, due to a spontaneous collapse mechanism included into the …
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The Jungle Tide: “Collapse” in Early Mediaeval Sri Lanka
This thesis reassesses the Early Mediaeval “collapse” of Anuradhapura, Sri Lanka, through explicit reference to the archaeological record. The study of Anuradhapura’s terminal period has been dominated by a reliance upon textual sources, resulting in a monocausal and politically charged narrative …
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An examination of flow characteristics in collapsing elastic tubes
A hydraulic collapse mechanism was incorporated into a recirculating pulsatile flow system to simulate the physiologic problem cf coronary artery vasospasm. A dimensional analysis of the hemodynamic problem provided the basis for i) the specifications for elastic test sections (both straight and …
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Circumstellar environments around the youngest protostars: interferometric observations and modeling
… Astronomy. Protostars form through gravitational collapse inside their natal envelopes, and these circumstellar envelopes contain valuable information about the physical processes of star formation. In this thesis, both molecular lines and dust continuum are utilized to investigate the nature of …
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Metallicities and stellar populations in spiral bulges
… astrophysical research is the development of models of galaxy formation that are consistent with observational data. Until recently, the main tools of such research were broadband colours. However, the Lick system of indices has recently provided researchers with a more accurate tool for …
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The solution of two dimensional problems in astrophysics
… The dependence of the final velocity of the collapsed remnant on the location and energy of the explosion is computed. The largest remnant velocities result from explosions located at a mass fraction of about 0.5. An explosion energy fifty per cent greater than the binding energy of the star …