A multizone sound field control method, called amplitude matching, is proposed. The objective of matching to synthesize a desired (or magnitude) distribution over target region with multiple loudspeakers, whereas the phase arbitrary. Most current methods are intended specific including or acoustic potential energy inside region. In can be set, ignoring propagation directions. Although optimizat...

generate very wide bandwidth waveforms directly and efficiently. With chaos control, we can produce a vast array of waveforms that are ideal for spread-spectrum communications and for highly accurate ranging. We believe a system designed around a chaotic source can perform comparably to conventional systems while requiring far fewer components. The idea of exploiting the complexity of chaos in ...

evaluation of the cardiovascular system of canine pediatrics requires awareness of the anatomical and physiological changes occurring from birth to six months of age. the aim of this study was to report electrocardiographic changes in the littermate mongrel dogs from birth tosix months. serial six-lead electrocardiograms were recorded from ten normal littermate mongrel dogs kept on right latera...

This Brief Report is devoted to the study of the solitary surface wave rotating in the azimuthal direction, arising during water drainage from a cylindrical reservoir, when shallow flow conditions are reached. The linear dependence between the wave speed and its amplitude is shown to be similar to that expected from the classical Korteweg-de Vries equation.

I. Principles and Physical Properties of Ultrasound A. Sound WavesSound is created when an ultrasound transducer comes in contact with a physical medium and causes it to vibrate. The vibrations propagate through tissue and have areas of compression and rarefaction that resemble a sine wave. 1. PeriodTime from start of 1 cycle to the start of the next cycle; determined by sound source. 2. Freque...

We present an analytical study of the effect of small convective cores on the oscillations of solar-like pulsators. Based on an asymptotic analysis of the wave equation near the center of the star, we derive an expression for the perturbations to the frequencies of radial modes generated by a convective core and discuss how these perturbations depend on the properties of the core. Moreover, we ...