Summaries of the Issue
ADAPTIVE OUTPUT CONTROL: SUBJECT MATTER, APPLICATION TASKS AND SOLUTIONS Bobtsov Alexey Alexeevich, Nikiforov Vladimir O
The problem of adaptive output control for parametric and functionally uncertain plants is considered. Application examples illustrating the practical use of the discussed theory are given along with the mathematical formulation of the problem. A brief review of adaptive output control methods, by both linear and non-linear systems, is presented and an extensive bibliography, in which the reader will find a detailed description of the specific algorithms and their properties, is represented. A new approach to the output control problem - a method of consecutive compensator - is considered in detail.
UP-TO-DATE ISSUES OF CONTROL SYSTEMS THEORY
CONTROL APPROACH FOR NONLINEAR PLANT WITH PARAMETRIC UNCERTAINTIES AND INPUT DELAY Bobtsov Alexey Alexeevich, Pyrkin Anton Alexandrovich
Stabilization problem for unstable nonlinear plant with parametric uncertainties and input delay is considered. A new approach is proposed that makes it possible to identify plant parameters and design the stabilization algorithm with state-feedback predictor.
SUBOPTIMAL CONTROL OF NONLINEAR MULTI-AGENT SYSTEMS Furtat Igor Borisivich
The article deals with the issue of robust suboptimal control for multi-agent systems which model is represented by differential equations with Lipschitz nonlinearity. It is assumed that only scalar subsystem outputs are available to measurement. An algorithm of decentralized control is obtained providing uncertainties compensation and subminimization of performance index with given accuracy.
DYNAMICAL SYSTEMS STABILITY STUDY BY THE PROPERTIES OF THE VECTOR PHASE SPEED FLOW THROUGH A CLOSED CONVEX SURFACE Furtat Igor Borisivich
The paper deals with stability analysis of autonomous dynamical systems by vector phase speed flow through a closed convex surface. Conditions on the sign of the vector phase speed flow for stability of dynamical systems are proposed.
HYBRID ALGORITHM OF FREQUENCY IDENTIFICATION FOR MULTI-SINUSOIDAL SIGNAL Bobtsov Alexey Alexeevich, Vedyakov Alexei A, Kolyubin Sergey A, Pyrkin Anton Alexandrovich
Identification problem of unknown frequencies for multi-sinusoidal signal on two harmonics case example is considered. Based on cascade reduction method, identification algorithm is proposed to accelerate the process of parametric convergence of the unknown frequencies for multi-sinusoidal signal.
INTEGRAL DIFFERENTIATING SPEED-GRADIENT ALGORITHMS IN MULTIPLE SYNCHRONIZATION ISSUES FOR VIBRATION UNITS Fradkov Alexander L., Tomchina Olga P, Galitskaya Viktoria A, Gorlatov Dmitry V
Integral differentiating speed-gradient algorithms and their special cases (proportional, integral and proportionalintegral speed-gradient algorithms) are described. The definition of an approximate multiple frequency coordinate synchronization is given and integral differentiating algorithms of multiple synchronization control for vibration units are designed. The results of comparative computer simulation for proportional and proportional-integral algorithms are shown, proving that the proposed algorithms have a number of advantages over the known ones.
DISCRETE-TIME ROBUST CONTROL FOR ROBOT-MANIPULATOR Gusev Sergei V
The problem of robot-manipulator control is considered under uncertainty in robot dynamic parameters and input noise. The linear discrete-time regulator is proposed for desired motion stabilization of robot-manipulator. It is shown that decreasing the sampling time it is possible to make the tracking error as small as necessary.
ANALYSIS AND PROCESSING OF ELECTROMYOGRAM SIGNALS Zimenko Konstantin A., Borgul Alexander S, Margun Alexei A.
A method of electromyogram signals processing and identification for implementation in rehabilitation devices control is given. The method is based on the high-frequency components filtration which improves the signal/noise ratio; also it is based on the wavelet analysis for signal preprocessing and motion type classification by taught artificial neural network. Obtained accuracy of motion type classification is 94%.
IMPLEMENTATION OF INDUSTRIAL ROBOT-MANIPULATOR SETUPS IN EDUCATIONAL PROCESS Bobtsov Alexey Alexeevich, Kolyubin Sergey A, Pyrkin Anton Alexandrovich
The article deals with the most important aspects of industrial robot-manipulator setups implementation as an educational tool for the workshop part of advanced technologies in robotics and control engineering courses.
ON OPTIMIZATION OF UNMANNED AERIAL VEHICLE APPLICATION FOR SEARCH AND TRACKING OF OBJECTS Abdulov Rauf Nusrat ogly, Abdullayev Novruz Almamed ogly, Asadov Hamid Hicmed ogly
Critical analysis of the known method of signal arrival time difference on the basis of UAV is carried out. Research results show the possibility of this method optimization and further synthesis of the new one. Optimization of the known search and tracking method based on the group of UAV makes it possible to give practical recommendations on the synthesized new method application.
OPTICAL AND OPTICAL ELECTRONIC SYSTEMS. OPTICAL TECHNOLOGIES
HOMOGENIZERS OF LASER RADIATION FABRICATED BY LASER GRAVING OF POLYMER FILMS Balya Vera K, Denisyuk Igor Yu., Barausova Ekaterina V
The article deals with homogenizers of laser radiation based on crossing micro-prism structures and random diffusers by laser ablation of thermo-sensitive film and subsequent nano-imprint copying.
PHOTONICS AND OPTICAL INFORMATICS
METAFILMS CHARACTERISTICS FOR THE TERAHERTZ FREQUENCY RANGE AT THE GEOMETRIC PARAMETERS SCALING Terekhov Yury E, Khodzitskiy Mikhail K, Belokopytov Gennady V
The reflection and transmission coefficients of metafilms composed of U-shaped resonators were obtained in the frequency range of 0.1 - 1 THz by numerical finite-element simulation method. The side length, the gap depth and the period of resonators were proportionally scaled. The experimental spectra of the transmission coefficients for metafilms with U-shaped resonators were received. The re-tuning of the resonant modes was shown from 0.12 till 0.51 THz at the geometric parameters scaling.
TERAHERTZ RADIATION INFLUENCE ON THE GROWING OF NEURITES Tsurkan Maria V, Smolyanskaya Olga A, Bryantseva Natalia G
Our research was devoted to the impact of broadband pulsed THz radiation in the frequency range of 0.05 to 2 THz on the neurite growth in the sensory ganglia of 10-12-day chicken embryos. Dependence of changes in functional responses of cells on the average output power has been found.
FEMTOSECOND PHOTON ECHO ON SIZE-INHOMOGENEOUS QUANTUM DOTS OF ZINC OXIDE AT ROOM TEMPERATURE Vashurin Nikita S, Popov Ivan I, Putilin Sergey E, Sidorova Vera T, Stepanov Sergei A, Sushentsov Nikolai I
The article deals with the discovery of femtosecond signals of self-diffraction and photon echo in a zinc oxide film of 100 nm thickness, consisting of different-sized quantum dots, at room temperature. Experimental results, proving the Autler-Townes effect demonstration on exciton transitions of quantum dots, are obtained.
COMPUTER SYSTEMS AND INFORMATION TECHNOLOGIES
SIMULATION ERRORS OF HIGH-LOADED SYSTEMS IN GPSS WORLD Aliev Taufic Ismailovich
The article presents research results of random number generators (RNG) influence on simulation accuracy of high-loaded queuing systems in the GPSS World simulation system. It is shown that for certain combinations of RNGs, called problem generators, the inaccuracy of the simulation results of highly loaded systems may reach tens of percent. The analysis of problem combinations revealed factors causing high level of inaccuracy in simulation results.
HIERARCHY OF ALGEBRAIC BAYESIAN NETWORK GLOBAL STRUCTURES AS A SYSTEM OF GRAPHS AND HYPERGRAPHS Andrey A. Filchenkov
Algebraic Bayesian networks are logical and probabilistic graphical models which make it possible to perform logical and probabilistic inference for knowledge uncertainty formalized via scalar and interval truth values of propositional formulae. Global structures of algebraic Bayesian network are overviewed; their systematization based on hypergraph representation is proposed and functional hierarchy of global structures is revealed. The proposed systematization gives the possibility to apply graph and hypergraph theory methods for solving a number of problems in analysis of algebraic Bayesian network global structures, in particular — to propose and justify a criterion for identification of its primary structure acyclicity, — and also gives the theoretical basis for algorithms of specified networks automated learning.
TAG LINES EXTRACTION AND RANKING IN TEXT ANNOTATION Popova Svetlana V, Khodyrev Ivan A
The article deals with comparative analysis of two approaches for tag lines ranking in text annotation task. The first approach is based on a weight evaluation of extracted phrases using TextRank algorithm, the second one is based on tf-idf estimation. Experiments were carried out on the base of INSPEC dataset collection. Experiment descriptions and comparative results are given. It was shown experimentally that tf-idf approach gives better results than the one based on TextRank.
DATA VERIFICATION IN ISSUE SUPERVISING SYSTEMS BY PRODUCTION RULES Katerinenko Roman S, Bessmertny Igor Alexandrovich
The paper proposes a method of data verification in issues tracking systems by means of production rules. This model makes it possible to formulate declaratively conditions that the information containment should comply with and apply reasoning procedures. Practical application of proposed verification system in a real software development project is described.
AGGLOMERATIVE CLUSTERING OF SOUND RECORD SPEECH SEGMENTS BASED ON BAYESIAN INFORMATION CRITERION Kydashev Oleg Yu
This paper presents the detailed description of agglomerative clustering system implementation for speech segments based on Bayesian information criterion. Numerical experiment results with different acoustic features, as well as the full and diagonal covariance matrices application are given. The error rate DER equal to 6.4% for audio records of radio «Svoboda» was achieved by means of designed system.
PROGRAM SYSTEM AND INFORMATION METADATA BANK OF TERTIARY PROTEIN STRUCTURES Nikitin Timur A, Porozov Yuri B
The article deals with the architecture of metadata storage model for check results of three-dimensional protein structures. Concept database model was built. The service and procedure of database update as well as data transformation algorithms for protein structures and their quality were presented. Most important information about entries and their submission forms to store, access, and delivery to users were highlighted. Software suite was developed for the implementation of functional tasks using Java programming language in the NetBeans v.7.0 environment and JQL to query and interact with the database JavaDB. The service was tested and results have shown system effectiveness while protein structures filtration.
FREQUENCY ANALYSIS OF RLE-BLOCKS REPETITIONS IN THE SERIES OF BINARY CODES WITH OPTIMAL MINIMAX CRITERION OF AUTOCORRELATION FUNCTION Kovylin Aleksander A, Zlobin Dmitriy V, Rodionov Aleksander Yu
The article describes the problem of searching for binary pseudo-random sequences with quasi-ideal autocorrelation function, which are to be used in contemporary communication systems, including mobile and wireless data transfer interfaces. In the synthesis of binary sequences sets, the target set is manning them based on the minimax criterion by which a sequence is considered to be optimal according to the intended application. In the course of the research the optimal sequences with order of up to 52 were obtained; the analysis of Run Length Encoding was carried out. The analysis showed regularities in the distribution of series number of different lengths in the codes that are optimal on the chosen criteria, which would make it possible to optimize the searching process for such codes in the future.
MINIMAL MODIFICATION OF AUTOMATA-BASED PROGRAMS INDUCED BY CHANGES IN THEIR TEST SCENARIOS Shestakov Alexei V
The article proposes modification method for automata-based programs induced by changes in their test scenarios. The method can also be used for constructing automata-based programs without using any prior knowledge of a program structure and without using evolutional algorithms (as was proposed by many authors before). The main feature of the method is a minimal requirement for program changes. Its essence lies in the reduction of the original problem to the problem of finding the shortest path in the acyclic weighted graph constructed from the original automaton and new test scenario.
PHASE GRADIENT METHOD OF MAGNETIC FIELD MEASUREMENTS IN ELECTRIC VEHICLES Ptitsyna Natalia G, Ismagilov Valery S, Kopytenko Yuri A, Korobeynikov Anatoliy Grigorievich
Operation of electric and hybrid vehicles demands real time magnetic field control, for instance, for fire and electromagnetic safety. The article deals with a method of magnetic field measurements onboard electric cars taking into account peculiar features of these fields. The method is based on differential methods of measurements, and minimizes the quantity of magnetic sensors.
MATERIALS TECHNOLOGY AND NANOTECHNOLOGIES
GALVANIC MAGNETIC PROPERTIES OF BISMUTH THIN FILMS DOPED WITH TELLURIUM MADE BY THERMAL VACUUM EVAPORATION Komarov Vladimir A, Matveev Daniil Yu, Demidov Evgeniy V, Krushelnitskiy Artemiy N
The influence of n-type impurity of tellurium (concentration range from 0.005 atomic % Te to 0.15 atomic % Te) on galvanic magnetic properties (resistivity, magnetic resistance and Hall constant) of Bi thin films with various thicknesses was studied. The properties were measured in temperature range from 77 to 300 K. It was established that the classical size effect in the films is significant and decreases with higher concentration of Te impurity. The analysis of experimental results was carried out in approximation of the law of Jones-Schoenberg dispersion for Bi films doped with tellurium. Calculation of concentration and mobility of charge carriers in the studied films was made.
EFFECT OF LASER MICRO STRUCTURING PROCESS ON ELECTROPHYSICAL PROPERTIES OF SIO2/SI SYSTEM Skvortsov Albert Matveevich, Roman Khalestkiy, Huynh Cong Tu
Electrophysical parameters of SiO2/Si system after irradiation by pulsed ytterbium fiber laser of ILI-1-50 type have been investigated. It is shown that in the silicon-silicon dioxide system under laser radiation a formation of defects occurs responsible for the appearance of different kinds of charges. It is found that laser-induced defects appear at sites remote from the irradiation zone as well. The defect generation rate at the silicon-silicon dioxide interface depends on their position in the energy band gap of silicon and reaches a maximum near the Fermi level.
COMPUTER-AIDED DESIGN SYSTEMS
SIMPLEX- METHOD AND ARTIFICIAL BASIS METHOD APPLICATION FOR ONBOARD EQUIPMENT DESIGN Mikhail Deyko, Zharinov Igor Olegovich
The article deals with optimization methods application for design decisions (simplex- method and artificial basis method) in instrument making. Their application for onboard equipment designing is exemplified.
ANALYSIS OF WIRELESS SENSOR AND ACTUATOR NETWORKS DESIGN METHODS Kirov Dmitry Alexandrovich, Ozhiganov Aleхander A.
Existing design methods of information and control systems are considered. Aspect, actor-oriented and platformbased approaches are selected and analyzed in relation to wireless sensor and actuator networks. Generic design processes of investigated systems are described based on these methods. Some improvement directions for them are suggested, their perspectives are discussed as well.
EVOLUTION MODELING METHODS APPLICATION FOR CIRCULATION OF DOCUMENTS OPTIMIZATION AT THE ENTERPRISE Tchernyshev Yuri O, Basova Alina V, Panasenko Pavel A, Vladimir I. Polyakov
A new approach to creation of information control systems at the enterprise is offered. The genetic decision algorithm for the solution of actual problems of nonlinear optimization is developed making it possible to increase the decision quality and speed. The developed procedure of initial population initialization is described. The modified operators of crossing-over, mutation are offered, the new approach to rejection of impractical decisions is justified. Introduction in genetic algorithm of macro evolution, that is the development of several subpopulations, is offered. It is noted that work not with one but with several initial populations gives the possibility to receive a bigger variety of genetic material and conduct evolution in separate subpopulations.
INFORMATION SECURITY METHODS AND SYSTEMS
INFORMATION SECURITY RISKS OPTIMIZATION IN CLOUDY SERVICES ON THE BASIS OF LINEAR PROGRAMMING Igor A. Zikratov, Odegov Stepan V, Smirnykh Alexander V
The paper discusses theoretical aspects of secure cloud services creation for information processing of various confidentiality degrees. A new approach to the reasoning of information security composition in distributed computing structures is suggested, presenting the problem of risk assessment as an extreme problem of decisionmaking. Linear programming method application is proved to minimize the risk of information security for given performance security in compliance with the economic balance for the maintenance of security facilities and cost of services. An example is given to illustrate the obtained theoretical results.
INTEGRITY CONTROL ALGORITHM FOR DEPERSONALIZED INFORMATION IN INFORMATION SYSTEMS OF PERSONAL DATA Gatchin Yuri A, Teploukhova Olga A , Kurakin Alexander S
The article deals with the problem of integrity ensuring for the information processed in information systems of personal data by depersonalization data algorithm. In order to solve this problem, we propose to use integrity algorithm, based on hash functions to confirm the immutability of depersonalized data stored in the information systems of personal data.
RAILWAY EMERGENCY SITUATIONS PREVENTION SYSTEM BASED ON GEOGRAPHIC INFORMATION TECHNOLOGIES Alekseev Vladimir V, Konovalova Vera S, Minina Anastasia A
The article deals with the system of emergency situation prevention on railway based on geographic information technologies (GIS), which makes it possible to estimate the influence of railroad defects, industrial objects (factories, plants located near investigated section of the railway) and natural factors (influence of the elements) on traffic safety. The procedures of area maps design for information systematization and display are offered. The algorithm of measurement information processing is developed, based on wavelet transform, that gives the possibility for the definition of railway bed defect parameters immediately after the measurements and does not require accumulation of information for further decryption. Techniques for influence estimation of natural and industrial factors on traffic safety are suggested to provide immediate representation of information for decisionmaking.
DIGITAL WATERMARKS IN IMAGE FILES Korobeynikov Anatoliy Grigorievich, Kuvshinov Stanislav S, Blinov Stanislav Yu, Leyman Albert V, Kutuzov Ilya M
The article is about generation problem of digital watermarks for graphic files. Mathematical model of digital watermarks generation is presented. The algorithm of messages introduction is analyzed. Developed steganography algorithm application for copyright check to a concrete file of multimedia is offered.
ECONOMICS AND FINANCES. MANAGEMENT
METHODOLOGICAL ISSUES OF TELECOMMUNICATION COMPANY PERFORMANCE ESTIMATION Tsukanova Olga A, Lavrentyeva Tatyana S
Methodological issues for telecommunication companies performance estimation are specified, approaches are suggested that provide a certain sequence of effectiveness evaluation and the use of identifiers reflecting the level of achieved performance.
INNOVATIVE ACTIVITY OF BANK SYSTEM SUBJECTS AS A FORM OF REALIZATION OF ECONOMIC INTERESTS Krasnoperova Tanzilya Ya
The article deals with the actual problem for innovative development of the Russian Federation banking system as form of economic interests realization.Ways of innovative activity stirring up by coordination of economic interests for bank activity subjects are offered.
NEW TECHNOLOGIES IN EDUCATION
LINGUISTIC SIMULATOR ARCHITECTURE FOR QUICK COMMUNICATION SKILLS MASTERING IN A FOREIGN LANGUAGE Vitaliy V. Kiselyov, Eliseeva Olga E, Kovalyonok Yury I, Khitrova Julia N
The article deals with linguistic simulator architecture as a network software solution designed to develop quickly foreign language communication skills. Key attention is paid to formal models which are the basic architecture component providing flexible educational strategies with no dependency on applicable teaching methods.