Results 161 to 170 of about 139,647 (216)

Effective dispersion curve and pseudo multimode dispersion curves for Rayleigh wave

Journal of Earth Science (Wuhan, China), 2011
The hi-energy bands in the dispersion image are usually interpreted as the true dispersion phase velocities. However, the multiple dispersion modes of Rayleigh wave in layered media stack in space, producing the effective dispersion curve and the pseudo multimode dispersion curves in dispersion image.
Shuangxi Zhang, Zhang Shuangxi
exaly   +2 more sources

Research On Dispersion Curves Of Masw

20th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems, 2007
The multichannel analysis of surface wave (MASW) method has been effectively used to determine near-surface shear (S)-wave velocity and map bedrock. Estimating the S-wave velocity profile from Rayleigh-wave measurements is straightforward. A three-step process is required to obtain S-wave velocity profiles: acquisition of a multiple number of ...
Yinhe Luo, Jianghai Xia, Jiangping Liu, Yixian Xu, Qingsheng Liu   +4 more
openaire   +1 more source

Phonon Dispersion Curves in Bismuth

IBM Journal of Research and Development, 1964
Dispersion curves for phonons propagating in the trigonal direction in bismuth at room temperature and at 75°K have been obtained in a neutron inelastic scattering experiment. Observed frequencies (units 1013 rad/sec) at 75°K are as follows: at the zone center, ωTO = 1.40 ± 0.02, ωLO = 1.89 ± 0.02; at the zone boundary in the trigonal direction, ωTA ...
John L. Yarnell, John L. Warren, Robert G. Wenzel, Seymour H. Koenig   +3 more
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Taylor Dispersion in Curved Channels

SIAM Journal on Applied Mathematics, 1997
Summary: The Taylor dispersion problem is to determine the long-time behavior of the concentration density of a passive scalar (contaminant) diffusing in an incompressible channel flow, given an initial injection of contaminant which is slowly varying-order \(\varepsilon\)-in the longitudinal direction. \textit{G. Taylor} [Proc. R. Soc. Lond., Ser.
openaire   +1 more source

An alternative method for plotting dispersion curves

Ultrasonics, 2009
Solving the frequency equation and plotting the dispersion curves in problems of wave propagation in cylinders and plates, particularly when the material is anisotropic, are complicated tasks. The traditional numerical methods are usually based on determination of the zeros of the frequency equation by using an iterative find-root algorithm.
Farhang, Honarvar, Esmaeil, Enjilela, Anthony N, Sinclair   +2 more
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Migration, unemployment dispersion and the Phillips curve

Regional Science and Urban Economics, 1980
Abstract Policy-makers have long known that the complexity of the labor market creates the potential for a wide variety of strategies to be utilized to improve the ‘wage inflation-unemployment’ trade-off. This research assesses the potential effect of two unemployment-reducing strategies — reducing the dispersion of unemployment rates and increasing ...
R E, Azevedo, G E, O'connell
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On the Dispersion Curves of Anisotropic Waveguides

Computational Mathematics and Mathematical Physics, 2018
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Phonon dispersion curves of bcc Ba

Physical Review B, 1985
Large single crystals of bcc Ba were grown and were used to study the lattice dynamics of this divalent metal by inelastic neutron scattering. The phonon dispersion curves were measured, at room temperature, along the (xi00), (xixi0), and (xixixi) symmetry directions.
, Mizuki, , Chen, , Ho, , Stassis
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EXPERIMENTAL DISPERSION CURVES FOR PHONONS IN ALUMINUM

Solid State Communications, 1963
Abstract Dispersion curves for phonons propagating in the [100] and [110] directions in an aluminum crystal at ~ 300°K have been measured in a neutron scattering experiment. These data together with the elastic constants obtained by Schmunk and Smith yield dispersion curves having average random errors of ~0·6 per cent, and estimated total errors of ...
John L. Yarnell, John L. Warren, Seymour H. Koenig   +2 more
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Phonon dispersion curves of CsCN

Pramana, 2004
The motivation for the present work was gained from the recent publication on phonon dispersion curves (PDCs) of CsCN from the neutron scattering technique. We have applied the extended three-body force shell model (ETSM) by incorporating the effect of coupling between the translation modes and the orientation of cyanide molecules for the description ...
N. K. Gaur, Preeti Singh, E. G. Rini, Jyotsna Galgale, R. K. Singh   +4 more
openaire   +1 more source