In previous work, we investigated two-dimensional steady gravity-capillary waves generated by a localized pressure distribution moving with constant speed U in water of finite depth h . Localized solitary waves can only exist in subcritical flows where the Froude number F = U/(gh) < 1 , and were found using a combination of numerical simulations of the fully nonlinear inviscid, irrotational equ...

the study of wave and its propagation on the water surface is among significant phenomena in designing quay, marine and water structures. therefore, in order to design structures which are exposed to direct wave forces, it is necessary to study and simulate water surface height and the wave forces on the structures body in different boundary conditions. in this study, the propagation of static ...

Abstract Background Diabetes is one of the most common causes for peripheral neuropathy which warrants early diagnosis and treatment. The conventional nerve conduction studies appear to be normal if few roots are escaping lesion. In view identifying a better clinical testing method, late response index comprising parameter F wave was constructed compared with diagnosing ability other parameters...

If Aq (β, α, k) is the scattering amplitude, corresponding to a potential q ∈ L2(D), where D ⊂ R3 is a bounded domain, and eikα·x is the incident plane wave, then we call the radiation pattern the function A(β) := Aq (β, α, k), where the unit vector α, the incident direction, is fixed, β is the unit vector in the direction of the scattered wave, and k > 0, the wavenumber, is fixed. It is shown ...

the strong ground motions recorded during the 2002 avaj earthquake have been used to estimates wave attenuation, qβ, and spectral decay parameter, κ, for the avaj region. qβ for shear wave is estimatedas a function of frequency in the range of 0.6- 18 hz. the results show that qβ increases with frequency in theform of qβ=62.7 f 0.9. our estimates are within the estimated range for different par...

In this paper, we study the existence, uniqueness and stability of traveling wave fronts in the following nonlocal reaction–diffusion equation with delay ∂u (x, t) ∂t = d u (x, t)+ f ⎛ ⎝u (x, t) , ∞ ∫ −∞ h (x − y) u (y, t − τ) dy ⎞ ⎠. Under the monostable assumption, we show that there exists a minimal wave speed c∗ > 0, such that the equation has no traveling wave front for 0 < c < c∗ and a tr...

The F waves in the electrocardiogram (ECG) of a patient with common type of atrial flutter were considered as random signals. Simultaneously recorded ECGs from several points on the chest wall were regarded as multiple time series. The number and location of the F wave generators and the direction of circus movement were estimated or determined by applying principal component analysis of the sp...