Volume 5 Issue 6


ELECTRONIC NETWORK JOURNAL "RUSSIAN TECHNOLOGICAL JOURNAL"


Volume 5 Issue 6

Download one file 92


INFORMATION SYSTEM. INFORMATICS. PROBLEMS OF INFORMATION SECURITY

A.S. Zuev,
R.G. Bolbakov

ON PROSPECTS OF DEVELOPMENT OF TELECOMMUNICATION SYSTEMS AND SERVICES BASED ON VIRTUAL REALITY TECHNOLOGY 120

Abstract
Virtual reality technologies are considered to be a basis and a promising development trend of telecommunication systems and services. New opportunities and sci-tech problems that need to be solved are currently undergoing analysis. In the nearest future, the possibility of creating a new segment in the international telecommunication services market that is oriented toward providing communication services to the mass consumer and the entertainment industry, new tools for goods promotion and education content delivery, as well as toward solving experimental problems in managing state structures and social economical systems, is being justified. An approach to creating and charging for according telecommunication services is being given, opportunities for using the existing national and international cellular connection infrastructure is researched. A lot of attention is paid to analyzing the prospects of shifting toward new cellular network standards of the fifth generation, employing new ways of connecting to the Internet, as well as new formats of transmitting and processing multimedia, including the provision of immersion in the virtual reality environment. Working on building grounds for the rapid development in this direction of telecommunication services and options provided by the Russian national and transnational cellular network operators, while using the "Digital Economy of the Russian Federation" program and the Strategy for Developing the Information Community of the Russian Federation in 2017–2030 as the regulatory basis. Attention is paid to research agendas, research in the area of equipment and telecommunication services exploitation based on virtual reality equipment safety in terms of consumer health.

Keywords: virtual reality, cellular communication, mobile internet, telecommunication service, digital economy, informational society, human-computer interaction

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S.A. Sorokin,
M.Z. Benenson,
A.P. Sorokin

METHODS FOR EVALUATING THE PERFORMANCE OF HETEROGENEOUS COMPUTER SYSTEMS 38

Abstract
Article is devoted to the performance evaluation of heterogeneous computing systems (platforms). The article substantiates the relevance of the use of problem-oriented configuration of computational systems for automated systems of information processing and management. The proposed mechanism is parallel and pipeline processing allowing to parallelize the task and thereby improve system performance. For interaction between modules it was proposed to use MPI-message passing interface between processes that perform a single task. The performance measurement was performed using recognized test kits Intel “MPI Benchmark” and “LINPACK HPL”, which allow to fully assess the effectiveness of the computing system and its relevance for the user. Given the graphics performance of the heterogeneous computing complex “profit center” in dealing with complex problems of linear algebra. The results obtained confirm high efficiency of MVP for various applications.

Keywords: computing system, benchmark, estimation of computer systems performance, control of operation parallelism, characteristics of computer systems

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MODERN ELECTRONIC AND TELECOMMUNICATION SYSTEMS

A.V. Smirnov

THE PERSPECTIVES OF HEURISTIC OPTIMIZATION METHODS EMPLOYMENT IN A DEVELOPMENT OF RADIO AND TELECOMMUNICATION DEVICES AND SYSTEMS 26

Abstract
A development of radio and telecommunication devices and systems in many cases requires derivation of difficult optimization problems with multimodal goal functions having a rugged fitness landscape. Heuristic optimization methods also called metaheuristics are the efficient means for solving of such problems. In this paper, we consider some examples of metaheuristics applications: approximation of the filter transfer functions with simultaneous optimization of amplitude and phase characteristics, optimization of the APSK signal constellations, optimal forming of the OFDM radar pulses, beamforming in the millimeter wave MIMO communication systems. These and many other examples show the preferences of heuristic algorithms: adaptability to the variations of parameter space dimension and objectives, capacity for solving of suboptimal solutions in a relatively short time, capability to solve the multiobjective optimization problems with simultaneous location of a set of Paretooptimal solutions. To actualize these preferences in engineering practice it is necessary to produce manuals, to introduce modern optimization methods in educational programs for corresponding lines and to develop the applicable software for the implementation of such methods.

Keywords: optimization, goal function, objective, heuristic algorithms, metaheuristics, Pareto front, genetic algorithm

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MICRO - AND NANOELECTRONICS, PHYSICS OF CONDENSED STATE

D.G. Lapin,
I.S. Ovchinnikov

MODEL OF PLATINUM´S ION BEAM DEPOSITION BY FOCUSED ION BEAM 19

Abstract
In this paper, the problems associated with the process of local ion-beam deposition of the material from the gas phase is analyzied. It has been established that the ion-beam deposition of a material from the gas causes a redeposition effect, exposure time and the current of the primary ion beam which is significantly influence on it. The necessity of modeling the ion-beam deposition process is substantiated to for reducing the size of the area of redeposition. An analysis of existing models has shown that they do not take into account all the technological parameters influencing the process of local ion-beam deposition. The refined mathematical model for predicting the focused ion beam deposition rate of platinum from the gas phase takes into account the magnitude of the region of overlap of the primary ion beam is proposed in this paper. Investigations of simulation results have shown that the deposition rate increases with increasing of overlap area. The values of the overlap region at which the deposition process passes into the etching process is determine and the relationship characterizing the beam current and the overlap region where deposition rate has maximum is established. It is shown that when the structures are deposited at the maximum deposition rate (determined in the simulation), the size of the region of the redispersion decreases.

Keywords: focused ion beam, ion stimulated deposition, nanostructuring, overspray, deposition´s rate

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ANALYTICAL INSTRUMENTATION AND TECHNOLOGY

A.V. Sandulyak,
A.A. Sandulyak,
M.N. Polismakova,
D.O. Kiselev,
D.A. Sandulyak

FARADAY MAGNETOMETER WITH SHERIC POLE PIECES: IDENTIFICATION ZONE WITH A STABLE FORCE FACTOR 54

Abstract
Basic principles and approaches in generation of devices for realization Faraday method are evaluated (for learning magnetic susceptibility of samples). It is noticed that problem exists – it is difficult to identify an operating area to coordinate here samples with a small volume. It was defined a prerequisites for an appearance area with a stable value of magnetic field intensity (induction) gradient of magnetic field. Presence such zone is a necessary but not sufficient condition for presence a zone with a stable value of magnetic forceful factor (as a product of field intensity or pole induction by its gradient). It was shown that developing direction in creating a Faraday magnetometer with a strong permanent magnet which pole surface is faced to sample is impractical because there is no prerequisites for an appearance stable zone both gradient and magnetic forceful factor. A creating Faraday magnetometer with mutually canted coils is hardly practical too. These coils generate magnetic field with a stable gradient but not with a stable magnetic forceful factor.
By the example of spheric pole pieces (recommended for using at Faraday magnetometer) presence an areas with stable gradient and magnetic forceful factor is proved (at the range of their extremum values). Range of such areas is defined and compared to each other. It was shown that absciss values of extremum are almost stable (for each distance between pole pieces, regardless of current load), magnetic forceful factor's extremum are close to axis of magnet pole for about 30-40% than gradient's extremum. There were defined the influence of distance between pole pieces on absciss values of extremums of gradient and magnetic forceful factor (a logarithmic dependence) and on their ordinate values (power dependence).

Keywords: Faraday magnetometer, induction, gradient, magnetic forceful factor, range of extremum values

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MATHEMATIC MODELING

V.P. Berdnikov

ALGORITHM OF DETERMINATION OF NON-STATIONARY NONLINEAR SYSTEMS FULL STABILITY AREAS 24

Abstract
The paper proposes a numerical algorithm for constructing piecewise linear Lyapunov functions for investigating the absolute stability of nonlinear nonstationary systems. Such functions define necessary and sufficient conditions for the stability of nonlinear nonstationary systems satisfying sector constraints. In the case of asymptotic stability of the system, the implementation of the algorithm will lead to the construction of the Lyapunov function level set in the form of a polyhedron of dimension equal to the dimension of the original system. Such a polyhedron can be used for constructing a piecewise linear Lyapunov function. The number of faces of the polyhedron increases as the system approaches to the stability boundary in the parameter space, which can lead to unacceptable time costs for calculations. The analysis of specific systems of the 2nd and 3rd order and the results of comparison with classical methods are given. Specific recommendations on the algorithm initial conditions choice are given.

Keywords: differential inclusions, nonlinear nonstationary systems, absolute stability, Lyapunov functions, stability areas, polytope, radius of curvature

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PHILOSOPHICAL FOUNDATIONS OF TECHNOLOGY AND SOCIETY

E.V. Bodrova,
N.B. Golovanova

MODERNIZATION OF THE HIGHER TECHNICAL SCHOOL: HISTORICAL EXPERIENCE AND PROSPECTS 37

Abstract
In article on the basis of published and previously unpublished documents and materials explores the basic conceptual approaches, stages and results of the reform of the higher technical school of Russia in the context of modernization processes. We conclude unresolved significant part of the planned tasks in the first stages of reforms in this area because of a miscalculation of the authors in developing the concept of reforms and inaccurate their chosen strategy of socio-economic development of the country. In the 1990s high school functioned in survival mode while trying to adapt to market conditions. At the beginning of the XX1 century, despite the increased funding and the introduction of new programmes and forms of training, to achieve a significant increase in the quality of engineering education has failed. Sharp enough remained the problem of employment of graduates. Milestone was 2015, when the role of quality training of engineers was designated as the basic conditions of economic development of the country. The article stated some achievements in the implementation of major projects of the Ministry of science and education in recent years. The author argues the need for: involving the development of conceptual frameworks of modernization of the higher technical school University community; the accumulation of all of the positive foreign and domestic experience in conducting such reforms.

Keywords: graduate school of engineering, modernization, priority projects

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