test day milk records of a holstein dairy farm collected during years 2004 to 2006 on 142 cows in the 1st lactation vs. 140 cows in the 2nd lactation were used in this research. there were real milk yields of cows available in each part of lactation in this farm making it possible to compare functions based on the new criteria (squared error of estimation). five functions were compared to estim...

Noise creates a harmful transformation on the estimation of derivative signal. In this paper, we suggest an easy to implement and adequate approximation method for function signal with noise. It is based polynomial regression constructed least squares differences, but degree depending signal-to-noise ratio. Numerical results similar accuracy compared established methods as Savitzsky-Golay smoot...

A new inverse halftoning algorithm for restoring a continuous tone image from a given error diffusion halftone image is presented. The algorithm is based on a novel anisotropic deconvolution strategy [14, 15]. The linear model of error diffusion halftoning proposed by Kite et al. [19] is exploited. It approximates error diffusion as the sum of the convolution of the original grayscale image wit...

There is proposed a representation of the Drazin inverse of a given polynomial square matrix, based on the extension of the Leverrier-Faddeev algorithm. Also, an algorithm for symbolic computation of the Drazin inverse of polynomial matrix is established. This algorithm represents an extension of the papers [5], [7] and a continuation of the papers [8], [9], [10]. The implementation is develope...