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 5823 for “"Angle"”.
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Limited angle tomography
This thesis investigates the limited angle tomography problem where axial reconstructions are produced from few measured projection views covering a 100° angular range. Conventional full angle tomography requires at least a 180° range of projection views of the patient at a fine angular spacing. …
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Grazing angle neutron diffraction
… and practical implementation of grazing-angle neutron diffraction as a new method of non-destructive surface and interface analysis. Diffraction in the grazing-angle geometry with x rays and neutrons possesses two unique advantages over specifically surface-sensitive methods for structure …
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The Torsion Angle of Random Walks
… we study the expected mean of the torsion angle of an n-step<br />equilateral random walk in 3D. We consider the random walk is generated within a confining sphere or without a confining sphere: given three consecutive vectors <sup>→</sup><em>e</em><sub>1</sub> , …
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Large-Angle Beamstrahlung: Simulation And Diagnostics
<p>LARGE-ANGLE BEAMSTRAHLUNG: SIMULATION AND DIAGNOSTICS</p> <p>by</p> <p>RYAN S. GILLARD</p> <p>May 2014</p> <p>Advisor: Dr. Giovanni Bonvicini </p> <p>Major: Physics </p> <p>Degree: Doctor of Philosophy </p> <p> Luminosity is paramount in high energy physics research, therefore it is critical to …
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Angle constrained paths in sensor networks
… networks and robotics. Paths with sharp-turn angles cannot be used by robotic vehicles and tend to consume more energy in sensor networks; In this thesis, we investigate the development of short-length paths without sharp-turn angles. We present a critical review of existing algorithms for …
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Wide Viewing Angle Liquid Crystal Displays
… are applied to the designs of wide viewing angle and high transmittance liquid crystal displays. First, a design of wide viewing angle liquid crystal displays utilizing crossed linear polarizers is proposed. The designed multi-domain vertical-alignment liquid crystal display predicts superb …
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Exclusive Backward-Angle Omega Meson Electroproduction
… of freedom at the short distance scale. Backward-angle meson electroproduction was previously ignored, but is anticipated to offer complimentary information to conventional forward-angle meson electroproduction studies on nucleon structure. This work is a pioneering study of backward-angle omega …
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The Remote Measurement of Phase Angle
… substations should not be made until the phase angle between their voltages is small, There has been, for many years, a need for the measurement of this phase angle, with the results displayed in the distribution Control Room, A direct measurement may be significantly in error, due to the time …
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Triple junctions and low angle boundaries
… paper, we examine how the distribution of low angle boundaries at triple junctions varies with the texture of a material.
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Compression failure of angle-ply laminates
… and mechanisms of failure in compression of angleply laminates. Experimental results were obtained from 42 angle-ply IM7/8551-7a specimens with a lay-up of [ (±9) / (=F9)] 6s where 9, the off-axis angle, ranged from 0° to 90°. The results showed four failure modes, these modes being a …
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Optimal large angle spacecraft rotational maneuvers
… problems associated with optimal large angle spacecraft rotational maneuvers. Both rigid and flexible body dynamical models for these vehicles are considered. Three relaxation/analytic continuation methods are developed for iteratively solving the two-point-boundary value problem which …
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Steering of a boost vehicle to a desired flight path angle trajectory using angle of attack control
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Aeronautics and Astronautics, 1983.
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Approximating Average Bounded-Angle Minimum Spanning Trees
… communication networks, we study average bounded-angle minimum spanning trees. Let P be a set of points in the plane and let α be an angle. An α-spanning tree (α-ST) of P is a spanning tree of the complete Euclidean graph induced by P with the restriction that all edges incident to each point p in …
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Contact angle hysteresis and the energy principle
Experimental evidence suggests that contact angle hysteresis is related, in some cases, to surface roughness or heterogeneity on a microscopic scale. This work investigates the effect of periodic roughness or heterogeneity on quasi-static motion of a liquid/vapor/solid contact line. We determine …
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Angle resolved dielectric response in carbon nanotubes
The thesis "Anlre resolved dielectric response in carbon nanotubes" is dedicated to expounding the the anisotropy in the fundamental dielectric response of carbon nanotubes. While nanotubes are along their axis essentially planar graphene, the rolled up topology gives rise to entirely new …
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Angle resolved photoemission studies of silver bromide
… synchrotron radiation is used to obtain both angle resolved photoemission data and angle integrated photoemission data on randomly oriented thick films of metallic silver, thin films of randomly oriented polycrystalline AgBr and AgBri, and epitaxially grown AgBr on an Ag ( 111) single crystal. …
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Angle resolved photoemission studies of silver-bromide
… synchrotron radiation is used to obtain both angle resolved photoemission data and angle integrated photoemission data on randomly oriented thick films of metallic silver, thin films of randomly oriented polycrystalline AgBr and AgBrI, and epitaxially grown AgBr on an Ag (111) single crystal.
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