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  • 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.

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Showing 231 to 240 of 4619 (0.021 seconds)
231

DIFFRACTION OF AN H-POLARIZED ELECTROMAGNETIC WAVE BY A CIRCULAR CYLINDERWITH AN INFINITE AXIAL SLOT

Beren, Jeffrey Allen, 1946- January 1977 (has links)
No description available.
Electromagnetic waves -- Polarization.
Electromagnetic waves -- Scattering.
232

Amplification of acoustic surface and layer waves.

Ramakrishna, Panda Satyendranadha. January 1971 (has links)
No description available.
Amplifiers (Electronics)
Surface waves
Sound-waves
233

Acoustic wave propagation and amplification in multilayers.

Fahmy, Aly Hassan. January 1973 (has links)
No description available.
Sound-waves
Surface waves
Amplifiers (Electronics)
234

A two dimensional finite-difference simulation of seismic wave propagation in elastic media

Liow, J. (Jeih-San) 12 1900 (has links)
No description available.
Seismic waves
Elastic waves
Finite differences
235

Resonance of stationary waves in a model atmosphere

Mitchell, Herschel L. January 1982 (has links)
The resonance of stationary waves in a mid-latitude (beta)-plane model is examined. In a series of linear experiments it is found that a large, quasi-resonant response occurs even in the presence of realistic damping. With forcing of reasonable amplitude the resonant growth rates are found to be such that a period of several weeks is required for the resonant mode to achieve large amplitude in the troposphere. When nonlinear effects are included the growing resonant wave is found to cause a stratospheric warming and zonal wind reversal and thus drives the system off resonance. We therefore examine flow configurations for which the nonlinear terms vanish. It is found that these flow configurations can resemble realistic blocking patterns. When diabatically forced, the resonant growth of these patterns does not give rise to any nonlinear interactions, although such interactions do occur if other models, which do not satisfy the non-interaction conditions, are present. We conclude that resonant growth can lead to the establishment of large-amplitude, stationary, long waves even when realistic damping and non-linear effects are operating.
Standing waves.
Atmosphere -- Mathematical models.
Atmospheric waves.
236

Elastic waves guided by isotropic layers.

Sun, Heng. January 1970 (has links)
No description available.
Elastic waves
Thin films
Surface waves
237

Surface wave convolvers and correlators

Batani, Naim Kevork January 1974 (has links)
No description available.
Surface waves.
Sound-waves.
Microwaves.
Correlators.
238

Laser generation of Rayleigh and Lamb waves for ultrasonic nondestructive testing

Costley, R. Daniel, Jr. 05 1900 (has links)
No description available.
Ultrasonic testing
Ultrasonic waves
Lamb waves
239

Scale model experiments on the diffraction and scattering of sound by geometrical step discontinuities and curved rough surfaces

Chambers, James P. 08 1900 (has links)
No description available.
Sound-waves Scattering
Sound-waves Transmission
240

Simultaneous inversion of Rayleigh phase velocity and attenuation for near-surface site characterization

Lai, Carlo Giovanni 05 1900 (has links)
No description available.
Surface waves
Rayleigh waves
Soil dynamics Testing

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