Via a sequence of approximations the Lagrangian in Hamilton's principle for dispersive nonlinear gravity waves we derive hierarchy Hamiltonian models describing wave-current interaction (WCI) wave dynamics on free surfaces. A subclass these WCI Hamiltonians admits emergent singular solutions certain initial conditions. These solutions are identified with mome...

This paper studies the dispersion of GPR wave’s phase velocity at different wideband frequencies in plywood and concrete with varying moisture content. study makes use two antennas 2 GHz centre frequency operating wide angle reflection refraction (WARR) mode computation spectral analysis surface wave (SASW). Computation velocities is based on acquisition cross-power spectrum unwrap distorted gr...

The main goal of this research is to provide a more detailed investigation of the size-dependent response of magneto-electro-thermo-elastic (METE) nanobeams subjected to propagating wave, ...

IMPLEMENTATION AND EVALUATION OF DISPERSION-INVARIANT FEATURES FOR SIGNAL CLASSIFICATION Greg Okopal, M.S. University of Pittsburgh, 2007 When a sound wave interacts with an object, the acoustic energy may excite resonances in the object corresponding to its natural modes of vibration. The backscattered wave will then contain information which can be used to distinguish among different objects....