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Measurement and analysis of critical current and AC loss of HTS tapes in a superconducting machinePei, Ruilin January 2010 (has links)
No description available.
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The transfer of momentum from waves to currents due to wave breakingWeir, Brad January 2010 (has links)
The research presented in this dissertation focuses on understanding the dynamics of waves and currents in the presence of wave breaking. The simplest approach, direct numerical simulation of the ocean dynamics, is computationally prohibitive--waves typically have periods of tens of seconds, while currents vary on times from hours to days. This work uses a multi-scale asymptotic theory for the waves and currents (Craik and Leibovich, 1976; McWilliams et al., 2004}, similar to Reynolds-averaged Navier-Stokes, in order to avoid resolving the wave field. The theory decomposes the total flow into the mean flow (current) and fluctuations (waves), then takes a moving time average of the total flow equations to determine the wave forcing on the current. The main challenge is extending this theory to include a physical model for dissipative wave effects, notably breaking, in terms of the wave age, wind speed, and bottom topography. Wave breaking is difficult to observe, model, and predict, because it is an unsteady, non-linear process that takes place over disparate scales in both space and time. In the open ocean, white-capping often covers less than 2% of the surface, yet still plays an important role in the flux of mass, momentum, heat, and chemicals between the atmosphere and ocean. The first part of this dissertation proposes a stochastic model for white-capping events, and examines the stability of the ensemble average of these events. Near the shore, the decreasing ocean depth causes waves to overturn and break. Over time, this drives currents that erode sediment from beaches and deposit it around coastal structures. These currents are often so strong that their effect on the wave field, and thus their own forcing, is significant. A detailed analysis of this phenomena makes up the second part of this dissertation.
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Summer circulation and water masses along the West Australian coast /Woo, Lai Mun. January 2005 (has links)
Thesis (Ph.D.)--University of Western Australia, 2005.
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On the pathways of the return flow of the meridional overturning circulation in the tropical Atlantic /Jochum, Markus, January 1900 (has links)
Thesis (Ph. D.)--Massachusetts Institute of Technology and Woods Hole Oceanographic Institution, 2002. / "Joint Program in Oceanography/Applied Ocean Science and Engineering."--Cover. "June 2002." Funding was provided by the National Aeronautics and Space Administration under grant NAG5-7194, and by the Office of Naval Research under grant N00014-98-10881. Includes bibliographical references (p. 134-138).
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A multi-coil magnetostrictive actuatorWilson, Thomas Lawler. January 2009 (has links)
Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2009. / Committee Chair: Zinn, Ben T.; Committee Member: Book, Wayne; Committee Member: Glezer, Ari; Committee Member: Neumeier, Yedidia; Committee Member: Seitzman, Jerry.
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Sea levels and metered currents off central CaliforniaDreves, Donald A. January 1980 (has links)
Thesis (M.S.)--Naval Postgraduate School, 1980. / Includes bibliographical references (leaves 90-91).
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An empirical statistical model relating winds and ocean surface currents : implications for short-term current forecasts /Zelenke, Brian Christopher. January 2005 (has links)
Thesis (M.S.)--Oregon State University, 2006. / Printout. Includes bibliographical references (leaves 83-86). Also available on the World Wide Web
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Where three oceans meet the Algulhas retroflection region /Bennett, Sara L. January 1988 (has links)
Thesis (Ph. D.)--Massachusetts Institute of Technology, 1988. / "Funding was provided by the Office of Naval Research through contract Numbers N00014-84-C-0134, N00014-85-C-0001, and N00014-87-K-0001." "October 1988." Includes bibliographical references (p. 357-367).
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Dynamics of the equatorial undercurrent and its terminationWacongne, Sophie. January 1988 (has links)
Thesis (Ph. D.)--Massachusetts Institute of Technology, 1988. / Supervised by Mark Cane and Philip Richardson. "January 1988." Funding provided by the National Science Foundation, grant numbers OCE 82-08744, and OCE 85-14885. Includes bibliographical references (p. 339-351).
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Estimation of vector surface currents beyond the region of overlap of dual-site HF radar : an implementation of the continuity equation /Bobby, Pradeep, January 2003 (has links)
Thesis (M.Eng.)--Memorial University of Newfoundland, 2003. / Bibliography: leaves 115-120. Also available online.
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