in this paper, an optimal algorithm is presented for de-noising of medical images. the presented algorithm is based on improved version of local pixels grouping and principal component analysis. in local pixels grouping algorithm, blocks matching based on l2 norm method is utilized, which leads to matching performance improvement. to evaluate the performance of our proposed algorithm, peak sign...

in this paper, we present an application of the stochastic calculusto the problem of modeling electrical networks. the filtering problem have animportant role in the theory of stochastic differential equations(sdes). in thisarticle, we present an application of the continuous kalman-bucy filter for a rlcircuit. the deterministic model of the circuit is replaced by a stochastic model byadding a ...

Symmetric white noise can induce directed current in periodic potentials that lack reflection symmetry ~termed ratchets!. The requirement for this to occur is that the white noise possesses non-Gaussian statistical properties with all its odd numbered cumulant correlation averages vanishing identically. The fluctuationinduced current is elucidated for three types of white noise: ~i! symmetric w...

The issue of the effect of consonant manner on the perceptibility of laryngeal contrast was addressed. Previous studies of perceptual confusion suggest that, in noise, the laryngeal contrast in fricatives is more difficult to perceive than stops for listeners in English, which is typologically classified as an “aspirating” language. The present study examined whether a similar pattern is observ...

in the present article, we focus on the numerical approximation of stochastic partial differential equations of itˆo type with space-time white noise process, in particular, parabolic equations. for each case of additive andmultiplicative noise, the numerical solution of stochastic diffusion equations is approximated using two stochastic finite difference schemes and the stability and consisten...