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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 21 for “"cylindrical symmetry"”.
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Coupled Thermoelastic Theory in Cylindrical Geometry with Cylindrical Symmetry
Made available in DSpace on 2017-07-06T18:48:25Z (GMT). No. of bitstreams: 2 Hatch_Steven_W_MS.pdf: 20179328 bytes, checksum: cae9e40097cce248db6aabaa58f81d0e (MD5) license.txt: 4813 bytes, checksum: 715c4321821a960fa1a1e91d2ac7ebce (MD5) Previous issue date: 1980
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An Experimental and Theoretical Investigation into the Acoustic Spectra of Solids Having Cylindrical Symmetry
… spectra of a range of isotropic solids having cylindrical geometry. In a number of cases, these have been compared with exact theoretical solutions and in others they have been used to test the extent to which approximate solutions are valid. A theory for contour vibrations in thick disks was …
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On Adhesion of Micro- and Nano-Systems
… them substantially, destroying the assumed cylindrical symmetry for nanotubes.
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A technique for measuring the electrical impedance of mechanical joints in electrically conductive structures
… the field components surrounding the coil. Cylindrical symmetry is used to reduce the problem to two dimensions. The second model is a finite difference solution in the frequency domain of the differential equation describing the magnetic vector potential. Cylindrical symmetry is used to …
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Development of a Laminar Construction Quadrupole Ion Trap
… of a three-dimensional quadrupole ion trap with cylindrical symmetry in laminar approximation. The laminar construction allows hyperbolic geometry to be well approximated with minimal construction effort and also provides more access into the trap through interlaminar spaces without disruption of …
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Oxygen reduction on platinum : an EIS study
… electrodes. Circular electrode design leads to cylindrical symmetry so that models may be applied exactly to the experimental geometry. Interpretation of EIS spectra is carried out by reducing and then extending existing models, and is consistent with the postulate that ORR is rate-limited …
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Approaching the Singularity in Gowdy Universes
… the question remains open. It is known that cylindrically symmetric dust can collapse to form a naked singularity. Since Gowdy universes comprise gravitational waves that are locally cylindrically symmetric, perhaps these waves can collapse onto a symmetry axis and create a naked singularity. …
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Correlation of Structure and Electrical Transport Properties of Carbon Nanotubes and Bundles in Field -Effect Transistors
… the screening of the electric field breaks the cylindrical symmetry of the tubes and affects their band structure, which is supported by experiments. These results emphasize the importance of atomic structure characterization to our understanding of the electrical transport properties of …
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Ultrasonic fields in fluids: theoretical prediction using difference equations and three dimensional measurement using optical techniques
… descriptions are derived for one-dimensional, cylindrically symmetric problems and for more general two-dimensional problems. A Fourier stability analysis is performed on the simpler numerical scheme to determine acceptable values for parameters such as the grid spacing and increment step …
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A cylindrical specimen holder for electron cryo-tomography
… used for high resolution imaging. Specimens with cylindrical symmetry offer a way to overcome this problem, since the thickness remains constant at all viewing angles. However, while this has been suggested before, it has never been demonstrated for frozen-hydrated specimens. In this work, I …
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A cylindrical specimen holder for electron cryo-tomography
… used for high resolution imaging. Specimens with cylindrical symmetry offer a way to overcome this problem, since the thickness remains constant at all viewing angles. However, while this has been suggested before, it has never been demonstrated for frozen-hydrated specimens. In this work, I …
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Dusty plasmas with high electron depletion
… measurement (VAEM) removes the requirement of cylindrical symmetry and allows localized dust density perturbations to be resolved. To extend optical diagnostics into dense dust clouds, radiative transfer simulations are introduced to account for multi-scattering effects. An experimentally …
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Novel resonant and light-guiding phenomena in photonics
… as long as the resonant scatterer has spherical/cylindrical symmetry, or is sufficiently smaller than the resonant wavelength of the incident wave. We apply it to study the scattering of light from spherically symmetrical resonant objects and atoms, and also the neutron scattering off nuclei. …
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Design and Analysis of Whispering Gallery Mode Semiconductor Lasers
… methods can be proven on WGM lasers with pure cylindrical symmetry, hence results from these experiments should be independent of any specific light output coupling scheme. Particular attention has been paid to the fact that device geometries that give the best performance for purely …
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Spatiotemporal dynamics of a photorefractive phase-conjugate resonator
… fields, is experimentally shown to break the cylindrical symmetry of the system and to increase the speed of the dynamics. By studying the first non stationary state at a cavity Fresnel number of F=2.0, the effect of the transverse component of the mismatch is shown to add a transverse phase …
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Toward high-performance, low-power, carbon-based interconnects and transistors
… their perfect crystalline structure and inherent cylindrical symmetry yield electrical properties superior to that of Si at similar dimensions. Thus, the second part of this document examines the possibility of CNT I-MOS transistors as a way to combine high-performance and low-power operation in …
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Boundary-value problems for transversely isotropic hyperelastic solids
… of elastic material into a sector of a circular cylindrical tube in respect of compressible transversely isotropic elastic materials. More specifically, we consider the possible existence of isochoric solutions. In contrast to the corresponding problem for isotropic materials, for which such …
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Modeling and Sensitivity Analysis for Trace Gas Sensors
… subsystem in the special case of cylindrical symmetry identifies one influential parameter for the fluid temperature and three for the pressure from the five dimensional parameter space. Similarly, for the two-way coupled model with annular geometry the active subspace method …
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Using positron emission particle tracking (PEPT) to investigate the motion of granular media in a laboratory-scale tumbling mill
… general set of routines for the special case of cylindrical symmetry through the addition of routines for the further pre-processing of RTDs, as well as for the calculation of angular measures about an arbitrary axis in space. Finally, I further extended this set of routines for application to …
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Crystallization behavior of poly (p-phenylene sulfide): kinetics and morphology
… surface and showed the radial growth habit and cylindrical symmetry of the transcrystalline regions.
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