• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 2719
  • 469
  • 393
  • 355
  • 189
  • 117
  • 67
  • 58
  • 52
  • 40
  • 39
  • 32
  • 28
  • 27
  • 27
  • Tagged with
  • 5645
  • 705
  • 607
  • 510
  • 390
  • 369
  • 358
  • 336
  • 336
  • 329
  • 329
  • 313
  • 303
  • 281
  • 277
  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
11

The in-situ data analysis for infragravity edge wave and its application in tsunami and typhoon waves

Chien, Hsiao-ching 12 February 2009 (has links)
The edge wave is a kind of infragravity wave. It¡¦s forcing and evolu- ion are different from common progressive waves. It may damage the co- astal area when a wave incident to the shore with an angle is reflected and reflected back by topography. In this thesis,by AWCP deployed near Kao- hsiung and Hualien harbor,the flow and surface elevation of the tsunami generated in PingTung earthquake and typhoon waves are analyzed.By assuming uni-directional progressive waves and HHT, the theoretical solution is used to check if the edge wave exists. The primary results suggest that Stokes edge wave is a significant component of the tsunami in Kaohsiung area and it might be generated when the tsunami arrived the DongGung or SGC.The infragravity wave generated by typhoon waves in typhoon Kaemi, Bopha and Hugupit are also edge waves by the relation between pressure and flow.That means edge waves be generated by typhoon waves outside the Hualien harbor will transport low frequence energy to the the harbor basin and cause the resonance of Hualien harbor.
12

I. Ab-initio effective potentials for use in molecular calculations. II. The Sternheimer correction, perturbation theory, and approximate wavefunctions. III. The theoretical determination of the LI₂ B¹Piu potential energy curve

Kahn, Luis R. Goddard, William A., January 1972 (has links)
Thesis (Ph. D.)--California Institute of Technology, 1972. UM #72-22,605. / Advisor names found in the Acknowledgments pages of the thesis. Title from home page. Viewed 02/12/10. Includes bibliographical references.
13

Wave transformation due to vertical barriers in fluids

Lee, Man-yip, Mark., 李文業. January 1998 (has links)
published_or_final_version / abstract / toc / Mechanical Engineering / Doctoral / Doctor of Philosophy
14

ELECTROMAGNETIC SHIELDING PROPERTIES OF A PROLATE SPHEROIDAL SHELL

Hamm, John Myles, 1939- January 1971 (has links)
No description available.
15

Wave digital adaptors for Brune, Darlington C and D, and twin-t sections

Le, Huynh Huu 16 April 2014 (has links)
This thesis is concerned with the derivation of new wave adaptors for the Brune section, the Darlington C and De sections, and an adaptor for the Twin-T structure. These wave adaptors have been derived by applying Martens' and Meerkötter's n-port voltage scattering matrix representation to the corresponding reference network interconnections. The following results have been obtained: a) The Brune, C and D adaptors are realized without any unit elements. b) The adaptors in a0 are canonical in the number of delays. c) All the adaptors considered may have a reflection-free port which makes cascade synthesis possible. d) The Brune and C adaptors require six multipliers, four of which are independent and two of which are identical. e) The D adaptor requires a total number of eleven multipliers, seven of which are independent and two pairs of which are identical. f) The Twin-T adaptor requires ten multipliers of which seven are independent. g) In a hardware realization, all the adaptors considered are made to have zero output after a finite time for zero input by means of a simple arithmetic procedure. Illustrative examples of filters using these structures have been designed, and simulated on a minicomputer. Their respective impulse responses are obtained and show no granularity and/or overflow oscillations, as expected.
16

Solution of dielectric loaded waveguides by finite element methods.

Csendes, Zoltan Joseph. January 1970 (has links)
No description available.
17

Studies of the constrained variational method

Zeiss, Geoffrey D. January 1976 (has links)
No description available.
18

Coaxial-waveguide transformer : impedance properties, specified in W-plane, field properties and application to the design of a magnetron output transformer.

Gooden, John S. January 1945 (has links) (PDF)
Thesis (M.Sc.)--University of Adelaide, 1946. / C.S.I.R. Typewritten copy. Includes bibliographical references.
19

Guided waves propagating in isotropic and uniaxial anisotropic slab waveguides

Jalaleddine, Ahmad M. January 1982 (has links)
Thesis (M.S.)--Ohio University, November, 1982. / Title from PDF t.p.
20

A numerical study of topographical effects on flow regimes in the lower atmosphere

Lindeman, John David, January 2008 (has links)
Thesis (Ph.D.)--George Mason University, 2008. / Vita: p. 138. Thesis director: Zafer Boybeyi. Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Computational Sciences and Informatics. Title from PDF t.p. (viewed July 3, 2008). Includes bibliographical references (p. 132-137). Also issued in print.

Page generated in 0.4401 seconds