New manifestly gauge-invariant forms of two-dimensional generalized dispersive long wave and NizhnikVeselov-Novikov systems of integrable nonlinear equations are presented. It is shown how in different gauges from such forms famous two-dimensional generalization of dispersive long wave system of equations, Nizhnik-Veselov-Novikov and modified Nizhnik-Veselov-Novikov equations and other known an...

In this paper, an analytic solution is presented using differential transform method (DTM) for a class of wave equation. The emphasis is on the nonlinear two-dimensional wave equation. The procedures introduced in this paper are in recursive forms which can be used to obtain the closed form of the solutions, if they are required. The method is tested on various examples, and the results reveal ...

This paper presents and demonstrates a method to determine wave field modifications resulting from elliptic bathymetric anomalies (pit or shoal) with gradual transitions in depth. The analytic (semi-numerical) method is valid for linear waves in a uniform depth domain with an arbitrary number of concentric elliptic forms of different, but uniform, depths combined to represent either a pit or a ...

in this research, we investigated the glottal wave of persian vowels, using electroglottography. in the first level, the properties of vowels glottal wave were analyzed. in the second level, the glottal wave between male and female speakers were  compared. contact quotient is the glottal wave parameter which was analyzed. data included six persian vowels and the glottal wave recorded using elec...

(ii) Use of multiplier blocks can drastically change the complexity relations between different structures. Despite using almost twice the wordlength, and many more coefficients (corresponding to having almost 2.5 times the complexity using the C, measure), the direct forms require similar numbers of adders to the waveform. Similarly, but less dramatically, the cascade and parallel forms are si...