Article history: Received 11 October 2013 Received in revised form 27 January 2014 Accepted 6 March 2014 Available online 18 March 2014

Retrieval of two dimensional ocean wave spectra from synthetic aperture radar data has been performed for several years using a variety of di erent approaches. Due to the complexity of the problem potential users of SAR ocean wave retrieval schemes like weather centers have found it diÆcult to judge about the quality and the bene t of SAR retrieved wave spectra. The present study gives insight ...

‎In this paper‎, ‎we obtain exact solutions involving parameters of some nonlinear PDEs in mathmatical physics; namely the one-‎dimensional modified complex Ginzburg-Landau equation by using the $ (G'/G) $ expansion method‎, homogeneous balance method, extended F-expansion method‎. ‎By ‎using homogeneous balance principle and the extended F-expansion, more periodic wave solutions expressed by j...

We report an experimental study of the backscattering of a sound wave of frequency f by a surface vibrating harmonically at frequency F (F << f) and amplitude A in the regime where the Doppler effect overcomes bulk nonlinear effects. When the duration to of the analyzed time series of the scattered wave is small compared to the vibration period, the power spectrum of the backscattered wave is p...

In this paper we study a number of algebraic conditions connected with the stability of strictly hyperbolic n × n systems of conservation laws in one space dimension ut + f(u)x = 0. Such conditions yield existence and continuity of the flow of solutions in the vicinity of the reference solution. Our main concern is a single rarefaction wave having arbitrarily large strength.

The existence of traveling wave solutions for equations of the form u, = t/vv + F'(u) is considered. All that is assumed about F is that it is sufficiently smooth, lim^i^^ F(u) = -oo, F has only a finite number of critical points, each of which is nondegenerate, and if A and B are distinct critical points of F, then F (A) * F(B). The results demonstrate that, for a given function F, there may e...

In this study, the effect of small-scale of both nanostructure and nano-fluid flowing through it on the natural frequency and longitudinal wave propagation are investigated. Here, the stationary and axially moving single-walled carbon nanotube conveying fluid are studied. The boundary conditions for the stationary nanotube is considering clamped-clamped and pined-pined and for the axially movin...

Within the last few decades, copper has been identified as one of the most applicable metals by many researchers. These researchers have also been enthusiastic to predict the price of this valuable metal. These days, the available technical analysis methods have been highly applied in the financial markets. Moreover, the researchers have used these methods to predict the suitable price tr...

Asymptotically exact and nonlocal fourth order nonlinear evolution equations are derived for two coupled fourth order nonlinear evolution equations have been derived in deep water for two capillary-gravity wave packets propagating in the same direction in the presence of wind flowing over water.We have used a general method, based on Zakharov integral equation.On the basis of these evolution eq...

using of nanofluids and ducts with corrugated walls are both supposed to enhance heat transfer, by increasing the heat transfer fluid conductivity and the heat transfer area respectively. use of a diverging duct with a jet at inlet section may further increase heat transfer by creating recirculation zones inside the duct. in this work two-dimensional incompressible laminar flow of a nanofluid e...