Porous aluminium anodization process has been investigated in 63 wt % sulfuric electrolyte. Porous alumina formed at anodic voltages till 16 V had the «honey comb» cell structure while porous alumina formed at anodic voltages more than 16 V displayed the tubular cell structure with thickness expansion factor more than 2,5. The obtained results can be explained by resulted of Al(OH)₃ formation during anodization process at high electric field inside anodic films.

It is shown that mathematical expressions for serial and approximate test statistics are equivalent on conditions that concerned overlapping series have the same lengths and observable sequence length →∞. The test result coincidence is experimentally confirmed.

Computer simulations have shown that the introduction of the cut-off waveguide section in the middle and the presence of absorbing inserts allows you to create a gyro-TWT with high gain over 40 dB, prevents the effects of self-excitation, receive an efficiency of ~ 37 %, improve the uniformity of the frequency response and have a gain bandwidth of 6 %.

Single crystals of In₂S₃, FeIn₂S₄ compounds and their solid solutions (FeIn₂S₄)_{1- x} (In₂S₃)_x have been grown by directional crystallization of the melt (vertical Bridgman method). Transmission spectra of the grown crystals in the intrinsic absorption edge region were investigated. Band gap width ( E_g ) and its concentration dependence have been determined on the measured spectra. It is established, that band gap width E_g changes nonlinearly with composition x .

The technology of multilayer electromagnetic radiation shields production with use of composite materials on the basis of expanded perlite sand and powdered carbon materials of various types is proposed. The electromagnetic radiation attenuation and reflection of coefficients frequency dependences of shields produced by the proposed technology are investigated. The recommendations for the practical application of such screens are developed.

A fast selective-covariance tracking method of low-sized targets from non-stationary camera is proposed. It is based on selective predictor and representation of spatial and statistical target properties by covariance matrix. The comparison of proposed selective-covariance and known covariance methods is provided.

Algorithms of author's abstracts construction on the basis of the texts frequency analysis are considered. Their comparative analysis of algorithms is made, and also ways of quality improvement of the author's abstract are offered. The algorithm of drawing up of the summary abstract is realized. The program module for automatic construction of abstracts on the basis of the developed methods is created.

The optimum frequency-manipulated signal for an estimation of security of channels of information leakage in the digital form is investigated. The system of signals used for an information transfer as set of signals, united by a uniform rule of construction is considered. The optimum system of signals providing the maximum noise stability at the minimum relations of energy of bit to spectral density of capacity of noise in channels of information leakage, methods of an estimation of security of discrete systems of signals in information leakage channels are offered at influence of noise of high level of type white noise, and also a choice and a substantiation of an optimum signal which will allow to estimate security of channels of information leakage.

The paper presents two approaches to control of chaotic regimes in encryption algorithm based on dynamic chaos by delayed coordinate methods and singular spectral analyzing methods. The comparative analysis of the parameters for the input and output sets used in encryption algorithms based on a dynamic chaos with standard AES, DES ciphers was performed. It was shown that the parameters characterizing the output sets for the encryption algorithm based on dynamic chaos are not bad relative to those the standard ciphers.

Building security systems based on the algebraic-geometric codes is possible with the use of various algebraic structures with cryptographic security. This paper investigates the properties of the code sequences, built on the Hermite curve in the field GF(16), their testing on the subject of the requirements for cryptographic transformations was conducted. Cryptographic analysis is performed using spectral transformations. Encrypted sequences quality metrics such as nonlinearity, balance, linear complexity are evaluated.

The results of research and development of high-performance hardware and software computer system for modeling the distribution of electromagnetic fields in the near field of metallic and dielectric nanoparticles of the analyzed. The complex is based on free software. The calculation results of the analytical and numerical values of electromagnetic fields in the vicinity of spherical nanoparticles are shown for comparison.

A mathematical model of time structure of the reflected signals in the synthetic aperture sonar is considered. The model provides the algorithm design of direct synthesis of antenna aperture, which allows to obtain high resolution image of seabed surface in reverberation conditions. The evaluation results of the delay time, the phase shift and the Doppler frequency for the different points of seabed surface are represented.

The analysis of uncertainty functions properties of the ladder discrete frequency-manipulated signals is carried out, at use in quality discrete the linearly-frequency-modulated radio impulses. Possibilities of decrease in level of lateral petals of such broadband signal are considered.

The hard- and software functional control method of microdisplay modules for personal videoprojection systems is presented. The basic components comprise of an active matrix SVGA LCOS microdisplay or a LED microdisplay based on Schottky diodes nanoporous silicon- nanostructured aluminium, a Video Pattern Generator VPG 170 which generates test images with different parameters and characteristics. It’s included also the specialized optical system containing a polarizing cube with antiglare coatings and RGB backlit system. The control of the generator test signals is accomplished using a specially developed software installed in a PC using Windows XP operating system.

Results of research and design of precision voltage stabilizers of positive polarity with low value of power failure and protecting from electrostatic discharge (K1254EN3AP1) with output voltage of 1,8 V, 2,5 V, 2,85 V, 3,3 V and 5 V, given in plastic cases KT-28 (TO-220), KT-27 (TO-126, KT-89 (D-PAK) are reduced.

This work is devoted to the development of the evaluation method of the control system sustainability during the emergencies that will allow to predict the hazards and their affect scope on human and tangible assets. The account of the principal factors has been considered on the basis of the control system sustainability evaluation during the emergencies of man-induced nature. The evaluation functions have been analysed as well as the corresponding starting positions such as optimistic, pessimistic, neutral and relatively pessimistic.

The results of study the morphology of the microstructured porous anodic alumina films formed using electrochemical anodization, sol-gel synthesis, photolithography and chemical etching are given. The metal mask was not used in photolithography, because of fabrication the continuous xerogel film. The perspective of application of these structures in planar optoelectronics and photocatalyses are discussed.

A new method for objective movement registration of lumbar spine is developed. Method is implemented by means of videoregistration of color markers situated at the skin over the lumbar spine spinous processes. Mathematic tool is demonstrated for processing of the data acquired.

A new method for solving of algebraic equations with the maximum number of different real roots equal degree n (fourth and above) is given.