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 20 of 1844 for “"Collapse"”.
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COLONY COLLAPSE
<p>Colony Collapse is a novel about longing, loss, and the trauma we carry through the world, focusing on three characters: Daniel Amana, Logan Cassidy, and Malory Bennet as they navigate a hostile environment and attempt to find somewhere to belong, or a way to move on. It is a novel that seeks to …
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Electromagnetism in Gravitational Collapse
A numerical approach to including electromagnetism with general relativity is developed using GRAXI as a starting point. We develop a mathematical model describing electromagnetism coupled to a scalar field in an evolving axisymmetric spacetime. As there are numerous formulations of …
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Collapse of masonry structures
This dissertation examines the collapse of masonry structures in response to large support displacements and horizontal ground accelerations. There are two main classes of masonry structure: arches that thrust, and supporting elements, such as walls and buttresses, which resist the thrust. This …
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Voltage collapse modes in power networks
Voltage Collapse is instability of a heavily loaded electric power system, which leads to declining voltages and blackout, and it is typically associated with reactive power limitations of the power system. Therefore, knowledge of the critical loading point is vital to ensure a secure mode of …
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Cylindrically symmetric models of gravitational collapse
… the Oppenheimer-Snyder model of gravitational collapse to the cylindrically symmetric case The second problem is an analysis of cylindncally symmetric spacetimes with self-similarity modelling gravitational collapse The field equations and regularity conditions are examined firstly for a vacuum …
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Automated Quadrilateral Coarsening by Ring Collapse
… the Automated Quadrilateral Coarsening by Ring Collapse (AQCRC) algorithm, provides a unique solution to allow conformal coarsening of both structured and unstructured quadrilateral finite element meshes. The algorithm is based on dual chord operations and dual chord removal. The AQCRC algorithm …
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Computational modeling of asthmatic airway collapse
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1998.
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Spatio-temporal dynamics before population collapse
… in spatio-temporal dynamics before population collapse. In the first project, we mapped the bifurcation diagram experimentally and found that the populations became more vulnerable to disturbance closer to the tipping point. Fluctuations of population density increased in size and timescale …
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Lateral collapse potential of wood pallets
Lateral collapse is a failure mode of wood pallets which most frequently occurs during transportation and handling. The study objective was to develop a simplified procedure for making relative comparisons in the lateral collapse potential of competing pallet designs. A theoretical model was …
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Stellar iron core collapse in {3+1} general relativity and the gravitational wave signature of core-collapse supernovae
… ever calculations of rotating stellar iron core collapse in {3+1} general relativity that start out with presupernova models from stellar evolutionary calculations and include a microphysical finite-temperature nuclear equation of state, an approximate scheme for electron capture during collapse …
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Collapse simulations of steel buildings under fire
Collapse analysis of steel structures under extreme hazards has been placed on the forefront of research in recent decades. This was primarily motivated by the September 11, 2001, terrorist attacks, which caused the complete collapse of the World Trade Centers (WTCs) including WTC-7. The collapse, …
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Voltage collapse prediction for interconnected power systems
… state analysis is applied to study the voltage collapse problem. The modal analysis method is used to investigate the stability of the power system. Q-V curves are used to confirm the obtained results by modal analysis method and to predict the stability margin or distance to voltage collapse …
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Collapse behaviour of steel columns in fire.
The three years' work undertaken in this project is a purely numerical analysis of the inelastic behaviour of steel columns in fire. This is made up of three main parts, each devoted to the development and use of a numerical technique to study the behaviour of steel columns in fire. The first two …
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Desiring Devastated Landscapes: Love After Ecological Collapse
<p>This dissertation examines arguments within religion and ecology, particularly within the ecospiritual movement and methodology called the new cosmology, that humans should cultivate and sustain emotional relationships with nature by caring for nonhuman others as our evolutionary kin. Focusing …
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Study of methods to predict voltage collapse
… a secure power system operation is the voltage collapse problem. The ever increasing size and connectivity of the power grid have lead to making the problem more multifarious. Widespread blackouts, similar to the one that occurred in the northeast in August 2003, could result from failure to …
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Initial Conditions and Collapse of Prestellar Cores
… in the initial conditions is transformed via the collapse into an individuality of the resulting stellar systems: single stars, binaries and multiple systems. As a result, we expect the statistical features of stellar populations to be controlled by this peculiar properties of prestellar cores. I …
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Collapse of Vapor Bubbles With Translatory Motion
Made available in DSpace on 2014-12-09T19:52:19Z (GMT). No. of bitstreams: 1 6607831.pdf: 3032302 bytes, checksum: 2daf722092c3fe366753bc7b1cebbf57 (MD5) Previous issue date: 1966
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Collapse dynamics of ultrasound contrast agent microbubbles
… work is the study of postexcitation rebound and collapse, observed acoustically to identify shell rupture and transient inertial cavitation of single UCA microbubbles. This time-domain analysis of the acoustic response provides a unique method for characterization of UCA destruction dynamics. The …
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