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 3691 for “"instability"”.
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Time-Dependent Thermoconvective Instability
Made available in DSpace on 2014-12-08T23:18:29Z (GMT). No. of bitstreams: 1 7013328.pdf: 15174339 bytes, checksum: 14645920e63d51c7e51d4bb3a96893f6 (MD5) Previous issue date: 1969
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Mesospheric Kelvin-Helmholtz instability
This work examines the Kelvin-Helmholtz instability, comparing features extracted from a numerical fully nonlinear model to radar and rocket measurements of free electron density and neutral motions in the mesosphere. Previous models of shear instability are reviewed, and relevant mesospheric …
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Topics in shear instability
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1990.
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Cavitation instability in solids
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1991.
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Instability of Dielectric Elastomer Actuators
… that must be thoroughly investigated. Commonly, instability phenomena are seen as a serious drawback, that should be predicted and avoided. However, in some cases they can be used to activate snap-through actuation, as in the case of buckling-like or highly-deformable balloon-like actuators. Soft …
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Instability of electrified viscous films
We examine the stability of a thin two-dimensional liquid film with a regular electric field applied in a direction parallel to an initially flat bounding fluid interface. We study the distinct physical effects of surface tension, van der Waals and electrically induced forces for a viscous …
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Experiments on Ekman layer instability.
Massachusetts Institute of Technology. Dept. of Meteorology. Thesis. 1966. Ph.D.
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A-C magneto hydrodynamic instability.
Thesis. 1977. Ph.D.--Massachusetts Institute of Technology. Dept. of Electrical Engineering and Computer Science.
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Wellbore instability mechanisms in clays
… parts. Part one analyzes the short-term wellbore instability during drilling in low permeability formations. The part focuses on the relationship between the mud pressure inside the wellbore and the undrained shear deformations within the formations. The analyses predict critical mud pressure …
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Radiating instability of nonzonal ocean currents
This thesis addresses the question of how a highly energetic eddy field could be generated in the interior of the ocean away from the swift boundary currents. The energy radiation due to the temporal growth of non-trapped (radiating) disturbances in such a boundary current is thought to be one of …
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Kelvin-Helmholtz Instability in Magnetized Plasma
… field can influence the evolution of this instability; depending on its strength and orientation, the field has either a stabilizing or destabilizing effect. We performed several experiments to gain insight into the underlying physics. In one type of experiment, with a laser produced plasma …
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Negative bias temperature instability (NBTI) experiment
The phenomenon known as Negative Bias Temperature Instability (NBTI) impacts the operational characteristics of Complementary Metal Oxide Semiconductor (CMOS) devices, and tends to have a stronger effect on p-channel devices. This instability is observed with an applied "on" biasing during normal …
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Mechanisms of Palindrome-Mediated Chromosomal Instability
… Despite being a significant source of genomic instability, the mechanisms governing palindrome fragility in eukaryotic cells are not fully defined. In this thesis, I make significant contributions to our understanding of palindrome-mediated chromosomal instability by defining structural and …
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Gas lift optimization and flow instability
… can be affected by two-phase (gas-liquid) flow instability within the production tubing, which results in a reduction in the total oil recovered. There are three main flow instabilities caused by, the density wave oscillation, the casing heading pressure and the flow perturbation within the …
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Instability of Decision Tree Classification Algorithms
Empirical results illustrate that the trees constructed by the proposed algorithm are more stable, noise-tolerant, informative, expressive, and concise. The proposed sensitivity measure can be used as a metric to evaluate the stability of splitting predicates. The tree sensitivity is an indicator …
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Radiating instability of nonzonal ocean currents
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Earth, Atmospheric, and Planetary Sciences, 1997.
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