In a recent letter [Phys.Rev.Lett. 30, 3269 (1995)], we reported that a macroscopic chaotic determinism emerges in a multistable system: the unidirectional motion of a dissipative particle subject to an apparently symmetric chaotic noise occurs even if the particle is in a spatially symmetric potential. In this paper, we study the global dynamics of a dissipative particle by investigating the b...

Detailed analysis of the 1/f low-frequency noise (LFN) in In0:52Al0:48As/InGaAs MODFET structures is performed, for low drain bias (below pinch-off voltage), in order to identify the physical origin and the location of the noise sources responsible for drain current fluctuations in the frequency range 0.1 Hz–105 Hz. Experimental data were analyzed with the support of a general modeling of the 1...

A single frequency of 500 Hz is used as the equivalent frequency for traffic noise to calculate the approximate diffraction in current road barrier designs. However, the noise frequency changes according to the different types of vehicles moving at various speeds. The primary objective of this study is the development of a method of calculating the insertion loss based on frequencies. First, th...

We have researched on the rational design method of active noise barrier based on the boundary surface control principle. This active noise barrier is composed of a conventional barrier, multiple secondary sources and multiple error sensors. The secondary sources and the error sensors are located on a surface in parallel with the barrier. By using this, we can control noise not only at the erro...

The main intention of this study is to propose general criteria for the locations control sources and error microphones that improve performance active noise barrier. Based on proposed study, greater reduction attained when diffracted field source canceled with sources, is, it suggested locate incident side below path connects furthest point in shadow zone edge Furthermore, are most suitably pl...