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ISSUE 14 (90), 2000


CONTENTS

FIELDS AND SIGNALS THEORY IN INGOMOGENOUS MEDIA

Koshovy V. V., Soroka S. A., Ivantyshyn O. L., Romanyshyn I. M. The use of polarization parameters for assessment of influence of artificial acoustic indignation on ionosphere
5-8
Levytsky O. Ye., Ivantyshyn O. L. Advent corners of reflected ionosphere radiowave in case of multimode propogation
9-14
Koshovy V. V., Kryvin Ye. V., Levytsky O. Ye. Determination of defect characteristics clasterization by a method of ultrasonic echo-sounding tomography
15-19
Nichoga V. O., Dub P. B. Electromotive force of induction sensors in the field of automatic locomotive signalling currents
20-24
Dzhala R. M. Electrodynamic model of pipeline with insulation defect
25-30
Teterko A. Ya., Hutnyk V. I. Model of the "eddy current probe - control object" system in inverse NDT problems
31-36
Nawrowski R., Tomczewski A. The solution of 3D electric field distribution by means of boundary method
37-40
MATHEMATICAL MODELS FOR SIGNALS AND SYSTEMS

Javorskyi I. M., Isayev I. Yu., Majevski Ja. The properties of discrete component estimator characteristics of non-stationary modulated signals
41-46
Drabich O. P., Mikhailishyn V. Yu., lavorskyj I. M. Determination of correlation period of the correlated random processes using covariation transformations
47-52
Zabolotnyi O. V., Mykhailyshyn V. Yu. Vibrodiagnostics of rolling element bearings by the methods of periodicaly correlated random processes
53-58
Kapustiy Â. Î., Koval Î. L, Mandziy Â. A, Nadobko Î. V. Optimization of logic elements feeding voltage on complementary mis-transistors by a criterion of minimum switching work
58-61
Azarov I. V., Sinitsky L. A. Investigation of stability of two-dimensional digital filters by the second Lyapunov's method
62-67
Tymoshchuk P. V., Lyshchenyuk V. I. Synthesis of a harmonic signals frequency multiplier
68-72
Prudyus I. N., Sumyk M. M., Synyavskyy A. T. Investigation of the matched processing stability of the polyphase signals to Doppler shifts
73-77
MEASUREMENT INFORMATION PROCESSING

Bukhalo O. P., Klym B. P., Mykytyn G. V., Pochapsky Ye. P., Fedoriv R. F. Measuringtransformation of an acoustic emission signal
78-82
Pogrebennyk V. D., Melnyk M. M. The control voltage of power lines and commercial power plants
82-86
Sopruniuk P. M., Pidgirniak Ja. Ye. Marine electric field indicator
92-95
Bukhalo O. P., Drabich P. P. Measuring device for combustible gases concentrationin air
96-100
Svenson O. M. Earth surface heaving - an additional information parameter in earthquake prediction
100-104
IMAGE PROCESSING AND PATTERN RECOGNITION

Vorobel R. A. A method for images contrast enhancement using nonlinear transformations of histogram component
105-110
Opyr N. V. Histogram equalization based on the approximate perception model of image
111-115
Vorobel R. A., Zhuravel I. M. Image contrast improvement by a modified piecewise stretch method
116-121
Kosarevych R. Ya., Rusyn B. P. Segmentation of fingerprint using profiles
121-124
Muravsky L. I. Use of transformed phase masks in a correlation system for identification of optical marks
125-129
Bobitski Ya. V., Laba H. P., Maksymenko O. P. The estimation of plastic microlenses shape and dimensions by the images
130-133
Verbitskyj T. Z., Iskierka I., Popov Â. Î. A model of a dependence of spreading velocity of longitudial elastic wave in a rock sample on pressure and its possible usage
134-137
Popov B. O., Sushchyk K. V. Accuracy of approximation by a function of rational polynomial
137-141
Kuchynsky Ò. Â., Lukenjuk A., A., Yatsymirskyy M. M. Data compression in airborne scientific data processing systems
142-145
Kozhan V. P., Derkach Â. Ò. High-performance structures for multiplication of polynomials
146-150
Soprunjuk P. M., Yuzevich V. M., Ogirko O. L, Lugovyi P. V. Automation of mathematical calculations for estimation of parameters of surface layers
151-155
Derkach Â. Ò., Kozhan V. P., Kisil B. V. An improvement of the effectiweness ofgraphical databasis
156-160

Revised: 14.04.2004