A model of abstracting textual information, based on the formalization of information languages by a special generative grammar and the concepts of word self-descriptiveness and contextual links between words, is considered. A method of abstracts synthesis for textual documents by identifying informative sentences, constructing their context and generating chains of syntax trees is suggested.

The paper presents discretization methods of control objects transfer functions, which are used in MATLAB, including zero- and first-order extrapolators, bilinear Tustin approximation and Tustin approximation with frequency prewarping. The MATLAB program which automates the process of determining discrete transfer functions of various control objects from their continuous models and calculates the digital controllers is developed. Discrete transfer functions and digital controllers for control objects of the second and third order are obtained programmatically. The digital modeling is applied to verify the operability of the control objects and the automatic control systems with different digital controllers.

The computer modeling methods of lever long-running suspension are considered. It is shown that the main source of information for the analytical model is bench tests. The results of bench tests and virtual tests performed by the verified model are given. A comparative analysis of the tests results is performed.

An analytical solution of the boundary problem describing the process of penetration of the
sound field of a spherical emitter located inside a thin unclosed spherical shell through a permeable multilayered spherical shell is considered. The influence of some parameters of the problem on the value of the sound field weakening (screening) coefficient is studied via a numerical simulation.

The electronic properties of the three- and two-dimensional structures of molybdenum disulfide, formed along <001>, <010>and<100> crystallographic directions, are studied by means of ab initio, from first principles, modeling methods. Electron density and zone structure calculations are performed. It is shown that the zone diagrams of 2D-<010> and -<100> MoS2 are identical. The zone structure of 2D-<001> MoS2 distinguishes by the direct band gap transition and the absence of the additional energetic levels. The detected peculiarities confirm the possibility that MoS2, as well as graphene, possess unique electronic and magnetic properties.

An algorithm of objects tracking in an optronic systems based on the least-squares method is suggested, which assumes smoothness of the movement trajectory and its speed variation. The peculiarity of the problem is not only the estimation of the trajectory coordinates, but also its speed, which has not been considered in the least-squares method before. A comparison of the tracking error variance for the Kalman filter and the suggested algorithm is given for an example.

An algorithm for the extraction of image contours is presented. The algorithm is based on combinatorial methods of clustering the oriented gradient of an image. It allows to estimate the position and the slope angles of the contours with a sufficient accuracy, and to obtain their vector representation by the broken lines or pieces of smooth curves, which is convenient for analyzing the shape of objects.

The paper describes a three-stage pipeline architecture implementation of the CABAC decoder for mobile applications, with image resolution up to 625SD. The decoder architecture is suggested for pipeline calculations with the decoding performance of one bin per clock cycle. The decoder is compatible with profiles high profile, high 10 profile and high 4:2:2 profile and supports regime MBAFF and 8×8 blocks. It is scalable both in the resolution and in the supported decoding tools described in standard H.264. A comparison of our implementation with implementations of a prototype CABAC decoder on FPGA from the company Xilinx is given.

Video systems for surveillance of medium and large objects and these systems hardware (street IP-cameras, servers, data storage devices, operator devices) are surveyed. The issues of image processing, surveillance systems development tendencies and tasks requiring solution are covered.

An approach to developing informative descriptors for solving the problem of statistical recognition of cryptographic generators is proposed. The descriptors developed by this approach are given. Theoretical results are illustrated by the computer experiments.

Various modified random testing approaches have been proposed for computer system testing in the black box environment. Their effectiveness has been evaluated on the typical failure patterns by employing three measures, namely, P-measure, E-measure and F-measure. A quasi-random testing, being a modified version of the random testing, has been proposed and analyzed. The quasi-random Sobol sequences and modified Sobol sequences are used as the test patterns. Some new methods for Sobol sequence generation have been proposed and analyzed.

A method for designing a configurable shift register is considered, which allows setting its capacity in various operation modes. The suggested shift register with a linear feedback can be used as a cyclic shift register, a generator of M-sequences, Johnson's counter and a single-channel signature analyzer. An assessment of the relevant hardware implementation expenses is given.