--Windyga’s peak-and-valley filter is a well recognized filter among researchers which is used to remove impulsive noise in many image processing applications; but its main limitation is that it works only for low density of noises. In this Paper, a variation of the two dimensional peak-and-valley filters is proposed to overcome this problem. It is based on minimum/maximum values present in the...

The real-time digital implementation of the Kalman filter requires a very fast signal processor specialised and optimised to perform complex mathematical calculations and manipulate a large amount of data. In fact, the algorithm is computationally intensive, and all of the steps involved require vector and/or matrix operation. In this paper the analysis of an actual fixed point implementation o...

Notations For a real discrete-time filter whose impulse response is h[n], h̄[n] = h[−n], n ∈ Z is its timereversed version. The hat ˆ notation will be used for the Fourier transform of square-integrable signals. For a filter h, its z-transform is written H(z). The convolution product of two signals in l2(Z) will be written ∗. For the octave band wavelet representation, analysis (respectively, sy...

The mechanism by which K(+) channels select for K(+) over Na(+) ions has been debated for the better part of a century. The prevailing view is that K(+) channels contain highly conserved sites that selectively bind K(+) over Na(+) ions through optimal coordination. We demonstrate that a series of alternating sites within the KcsA channel selectivity filter exists, which are thermodynamically se...

environment and which incorporates the use This paper extends and of a Wiener filter was described in [l]. By complements previous research we have performed on the performance of nonadaptive narrowband suppression filters when used in cellular CDMA overlay situations. In this paper, an adaptive LMS filter is applied to cellular CDMA overlay situations in order to reject narrowband duction: In ...

We propose Regularized Max Pooling (RMP) for image classification. RMP classifies an image (or image region) by extracting feature vectors at multiple subwindows at multiple locations and scales. Unlike Spatial Pyramid Matching where the subwindows are defined purely based on geometric correspondence, RMP accounts for the deformation of discriminative parts. The amount of deformation and the di...

The fast inactivation of the human ether-à-go-go related gene product (HERG) channel is a form of C-type inactivation and is decelerated by external tetraethylammonium (TEA) and potassium. From the time constant of inactivation, the dissociation constants of TEA (K(TEA)) and potassium (K(K)) to the inactivation-impeding site were evaluated. K(TEA) was found to exhibit unexpected voltage depende...

The authors propose a new realization algorithm for the 2-D FIR Wiener filters. The reduced-order 2-D orthogonal lattice filter structure is used as its principal component as in the 1-D case. A numerical example is included to verify the formulation. Introduction: One-dimensional (1-D) lattice structures have been wiedly used, as a subsystem, to solve FIR Wiener filtering problem. The lattice ...

in this article, the effect of cells' radius on the behavior of wavelength switching optical filter andthe effect of the radius of the optical filters' key characteristics such as wavelength resonance onan optical filter based on photonic crystals, have been investigated. currently, the most commonapplied mechanism for designing optical filter based on photonic crystals is using twome...

KcsA constitutes a potassium channel of known structure that shows both high conduction rates and selectivity among monovalent cations. A kinetic model for ion conduction through this channel that assumes rapid ion transport within the filter has recently been presented by Nelson. In a recent, brief communication, we used the model to provide preliminary explanations to the experimental current...