http://ric.zntu.edu.ua/issue/feedRadio Electronics, Computer Science, Control2018-03-29T15:13:46+03:00Сергій Олександрович Субботінsubbotin.csit@gmail.comOpen Journal Systems<p dir="ltr" align="justify"><span><strong>Description:</strong> The scientific journal «Radio Electronics, Computer Science, Control» is an international academic peer-reviewed publication. It publishes scientific articles (works that extensively cover a specific topic, idea, question and contain elements of their analysis) and <span lang="EN">r</span><span lang="RU">eviews (works containing analysis and reasoned assessment </span><span lang="EN">of </span><span lang="RU">the author's original or </span><span lang="EN">published </span><span lang="RU">book)</span> that receive an objective review of leading specialists that evaluate substantially without regard to race, sex, religion, ethnic origin, nationality, or political philosophy of the author(s).<span id="result_box2" lang="en"><span class="hps"><br /> </span></span><strong>Founder and </strong></span><strong><span>Publisher</span></strong><span><strong>:</strong> <a href="http://zntu.edu.ua/zaporozhye-national-technical-university">Zaporizhzhya National Technical University</a><span lang="uk">.</span> </span><strong><span>Country:</span></strong><span> Ukraine<span lang="uk">.</span><span id="result_box1" lang="en"><span class="hps"><br /> </span></span><strong>ISSN</strong> 1607-3274 (print), ISSN 2313-688X (on-line).<span id="result_box3" lang="en"><span class="hps"><br /> </span></span><strong>Certificate of State Registration:</strong> КВ №6904</span><span lang="uk">. </span><span>The journal was registered by the State Committee for information policy, television and radio broadcasting of Ukraine in 29.01.2003.<span id="result_box4" lang="en"><span class="hps"><br /> </span></span>In accordance with the decision of the <span lang="en-us">P</span>residium of All-Ukrainian Certification Commission (<span lang="uk">№ </span>1-05/4 dated 05.26.2010<span lang="uk">) </span>the journal <span lang="en-us">"Radio Electronics, Computer Science, Control" was included </span>in the <strong>List of the <span lang="en-us">scientific specialized periodicals of </span>Ukrain<span lang="en-us">e</span></strong> where <span lang="en-us">the results of dissertations for PhD and D. Sc. </span>in <span lang="en-us">Technical Sciences</span>, Physics and Mathematics (with specialization in Radiophysics) may be published.</span><span><span id="result_box25" lang="en"><span class="hps"><br /> </span></span><span id="result_box26" lang="en"><span class="hps">By the Order of the Ministry of Education and Science of Ukraine from 12.21.2015 № 1328 "On approval of the decision of the Certifying Collegium of the Ministry on the activities of the specialized scientific councils dated 15 December 2015" journal is included in the <strong>List of scientific specialized periodicals of Ukraine</strong>, where the results of dissertations for Doctor of Science and Doctor of Philosophy in Mathematics and Technical Sciences may be published.</span></span><span id="result_box27" lang="en"><span class="hps"><br /> </span></span></span><strong> <span>Year of Foundation:</span></strong><span> 1999. </span><strong><span>Frequency :</span></strong><span> 4 times per year (before 2015 - 2 times per year).<span id="result_box6" lang="en"><span class="hps"><br /> </span></span></span><strong> <span>Volume</span></strong><span><strong>:</strong> up to 20 conventional printed sheets. </span><strong><span>Format:</span></strong><span> 60x84/8. <span id="result_box7" lang="en"><span class="hps"><br /> </span></span></span><strong> <span>Languages:</span></strong><span> English, Russian, Ukrainian.<span id="result_box8" lang="en"><span class="hps"><br /> </span></span></span><strong> <span>Fields of Science :</span></strong><span> Physics and Mathematics, Technical Sciences.<span id="result_box9" lang="en"><span class="hps"><br /> </span></span></span><strong> <span>Aim: </span></strong><span>serve to the academic community principally at publishing topical articles resulting from original research whether theoretical or applied in various aspects of academic endeavour<span lang="ru">.</span></span><span><strong><br /> </strong></span><strong> <span>Focus:</span></strong><span> fresh formulations of problems and new methods of investigation, help for professionals, graduates, engineers, academics and researchers disseminate information on state-of-the-art techniques according to the journal scope.<br /> <span> <strong>Scope:</strong></span> radio physics, micro-, nano- and radio electronics, computer hardware and software, computer networks and telecommunications, algorithm and programming theory, optimization and operations research, machine-machine and man-machine interfacing, mathematical modeling and computer simulation, data and signal processing, control in technical systems, artificial intelligence, including knowledge-based and expert systems, data mining, pattern recognition, artificial neural and neuro-fuzzy networks, fuzzy logics, swarm intelligence and multiagent systems, hybrid systems.</span><span><strong><br /> </strong></span> <span> <strong><span> Journal sections:</span></strong><span><span id="result_box10" lang="en"><span class="hps"><br /> </span></span></span></span> <span> - radiophysics;<span id="result_box11" lang="en"><span class="hps"><br /> </span></span>- radio electronics and telecommunications;<span id="result_box12" lang="en"><span class="hps"><br /> </span></span>- mathematical and computer modelling;<span id="result_box13" lang="en"><span class="hps"><br /> </span></span>- neuroinformatics and intelligent systems;<span id="result_box14" lang="en"><span class="hps"><br /> </span></span>- progressive information technologies;<span id="result_box15" lang="en"><span class="hps"><br /> </span></span>- theory and methods of automatic control;<span id="result_box16" lang="en"><span class="hps"><br /> </span></span>- control in technical systems.</span><span><span><span id="result_box17" lang="en"><span class="hps"><br /> </span></span><strong>Abstracting and Indexing:</strong> <strong>The journal is indexed in <a href="http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&Full=Radio%20Electronics%20Computer%20Science%20Control" target="_blank">Thomson Reuters Web of Science</a></strong><span> (WoS) scientometric database</span><span>. </span> </span></span>The articles, published in the journal<span lang="en-us">,</span> are abstracted in leading international <span lang="en-us">and </span>national <strong>abstract<span lang="en-us">ig</span> journals</strong> and <strong>scientometric databases</strong>, and also are placed <span lang="en-us">to</span> the <strong>digital archives</strong> and <strong>libraries</strong> with free on-line<span lang="en-us"> access: Academic Keys, ACNP, ADAT, Akademik Dizin, ARDI, BASE, CiteFactor, CNKI, COPAC, CrossRref, DIIF, DOAJ, DOI, DRJI, EBSCO, eLibrary.ru, ETOC, Exlibris, EZB, GBV/GVK, GENERAL IMPACT FACTOR, GetInfo, GIF, Google Scholar, Impactfactor.pl, Index Copernicus, INSPEC, ISRA JIF, ISSN, JIFACTOR, Jour Informatics, Journalindex.net, JournalTOCs, Konferencii.ru, MIAR, OAIster, OAJI, Open Science Directory, Openaccessarticles, Openaire, Perechen-izdaniy.ru, PUBGET, Research Bible, ROAD, Scholar Steer, Sciary, SHERPA/RoMEO, SIS, SJIF, SJournals, SSM, UIF, WorldCat, WorldWideScience, ZDB, VINITI, Djerelo, UINC, Ukraininca Naukova, Ulrich’s Periodical Directory, Universia, URAN, V. I. Vernadsky National Library of Ukraine, and others which are listed and described <a href="/about/editorialPolicies#custom-0">here</a>.</span></p><p dir="ltr" align="justify"><span><span><strong>Editorial board: </strong><em>Editor in chief</em> - <span><span>S. A. Subbotin</span></span> , D. Sc., Professor; <em>Deputy Editor in Chief</em> - D. M. Piza, D. Sc., Professor. The <em>members</em> of Editorial Board are listed <a href="/about/editorialTeam">here</a>.<span id="result_box19" lang="en"><span class="hps"><br /> </span></span><strong>Publishing and processing fee:</strong> Articles are published and peer-reviewed <strong>free of charge</strong>.<span id="result_box20" lang="en"><span class="hps"><br /> </span></span></span><strong> <span>Authors Copyright: </span></strong><span>The journal allows the authors to hold the copyright without restrictions and to retain publishing rights without restrictions. The journal allows readers to read, download, copy, distribute, print, search, or link to the full texts of its articles. The journal allows to reuse and remixing of its content, in accordance with a Creative Commons license СС-BY.<span id="result_box21" lang="en"><span class="hps"><br /> </span></span></span><strong> <span>Authors Responsibility:</span></strong><span> Submitting the article to the journal, authors hereby assume full responsibility for the copyright compliance of other individuals and organizations, the accuracy of citations, data and illustrations, nondisclosure of state and industrial secrets, express their consent to transfer for free to the publisher the right to publish, to translate into foreign languages, to store and to distribute the article materials in any form. Authors who have scientific degrees, submitting the article in the journal, thereby giving their consent to free act as reviewers of other authors articles at the request of the journal editor within the established deadlines. The articles submited to the journal must be original, new and interesting to the reader audience of the journal, have reasonable motivation and aim, be previously unpublished and not be considered for publication in other journals. Articles should not contain trivial and obvious results, make unwarranted conclusions and repeat conclusions of already published studies.<span id="result_box22" lang="en"><span class="hps"><br /> </span></span></span><strong> <span>Readership: </span></strong><span>scientists, university faculties, postgraduate and graduate students, practical specialists.<span id="result_box23" lang="en"><span class="hps"><br /> </span></span></span><strong> <span>Publicity and Accessing Method :</span></strong><span> <strong>Open Access</strong> on-line for full-text publications<span id="result_box24" lang="en"><span class="hps">.</span></span></span></span></p><p dir="ltr" align="justify"><span><strong><span style="font-size: small;"> <img src="http://journals.uran.ua/public/site/images/grechko/1OA1.png" alt="" /> <img src="http://i.creativecommons.org/l/by-sa/4.0/88x31.png" alt="" /></span></strong></span></p>http://ric.zntu.edu.ua/article/view/124465METHOD OF PROCESSING THE REFLECTED SIGNALS FROM PULSED EDDY CURRENT CONVERTERS2018-03-29T15:06:27+03:00A. A. Abramovychrvv@zntu.edu.uaI. S. Kashirskyrvv@zntu.edu.uaV. A. Poddubnyrvv@zntu.edu.ua<p>Context. The problem of processing signals of eddy current converters (ECC) reflected from metal inhomogeneities in a dielectric medium (soil) is considered. The object of the study was the method of processing reflected signals.</p><p>Objective. The purpose of the work is to create a method of digital signal processing that is convenient for digital processing, which allows to expand the capabilities of an ECC by analyzing the type of metal in a subset of nonmagnetic (copper, gold, silver, etc.) and magnetic (steel, nickel) materials.</p><p>Method. The method of processing reflected from metal inhomogeneities signals of eddy current converters in the time domain is proposed, which allows to identify the type of metal within a subset of non-magnetic and magnetic materials, which makes it possible to increase the detection efficiency of objects made of non-ferrous and precious metals hidden in a dielectric medium. The time signal obtained by the ECC is digitized and converted into a graphic image by the software, in which the continuous signal change is replaced by the characteristic lines (graphically). Graphic images have a high information saturation, because their characteristic lines differ in coordinates, height and polarity. The crossing points of the signal through zero are also fixed. This form of signal is clear and convenient for comparing signals.</p><p>Results. The proposed method is implemented programmatically and experimentally confirmed the possibility of its use for solving the problem of identifying the type of metal within the subset of non-magnetic and magnetic materials.</p>Conclusions. The conducted experimental researches have confirmed the efficiency of the proposed method for processing signals of eddy current converters and the software of its implementer. They allow us to recommend a method for solving the problems of identifying the metal from which the object is made, which is located in a dielectric medium (soil). Prospects for further research are the adaptation of mathematical and software to identify the signals of the serial eddy current transducers, which will expand their functionality.Copyright (c) 2017 A. A. Abramovych, I. S. Kashirsky, V. A. Poddubnyhttp://ric.zntu.edu.ua/article/view/124596PRINCIPLES OF ELECTRICAL IMPEDANCE CALCULATING OF OSCILLATING PIEZOCERAMIC DISK IN THE AREA OF MEDIUM FREQUENCIES2018-03-29T15:06:36+03:00C. V. Bazilorvv@zntu.edu.ua<p>Context. The relevance of the use of various functional elements of piezoelectronics in power and informational systems is due, above all, to their high reliability. The final goal of mathematical modeling of the vibrating piezoelectric elements physical condition is a qualitative and quantitative description of characteristics and parameters of existing electrical and elastic fields.</p><p>Objective. The aim of this work is to calculate the electrical impedance of oscillating piezoelectric disk in the mid-frequency range.</p><p>Method. At sufficiently general initial assumptions a mathematical description of the electrical impedance of the oscillating thin piezoceramic disk with end surfaces continuous covering by electrodes in vacuum is obtained. It is shown that electric impedance is determined by the averaged values of the components of piezoceramics material particles displacement vector.</p><p>Results. Expression for electrical impedance calculating of the oscillating piezoceramic disk at middle frequencies is built, where the disk’s material particles displacement vector is almost completely determined by the radial component.</p>Conclusions. As a result of research of real device’s mathematical model a set of geometrical, physical and mechanical and electrical parameters of a real object can be determined which provides realization of technical parameters of piezoelectric functional element specified in technical specifications. This significantly reduces the time and cost of new functional elements of piezoelectronics development. Prospects for further research can be defined as the construction of technology for calculating of transformation coefficients in piezoelectric transformer with several secondary electrical circuits.Copyright (c) 2017 C. V. Bazilohttp://ric.zntu.edu.ua/article/view/124623SELECTOR OF CLASSIFIED TRAINING SAMPLES FOR SPATIAL PROCESSING OF SIGNALS UNDER THE IMPACT OF COMBINED CLUTTER AND JAMMING2018-03-29T15:06:48+03:00D. M. Pizarvv@zntu.edu.uaT. I. Bugrovarvv@zntu.edu.uaV. M. Lavrentievrvv@zntu.edu.uaD. S. Semenovrvv@zntu.edu.ua<p>Context. In the conditions of combined clutter and jamming radar performance is significantly degraded. This is due to the decorrelation of a point source of an active jamming by spatially distributed passive clutter. The methods of forming classified training samples to adjust the weight coefficients of spatial filters are introduced.</p><p>Objective. The goal is developing an effective method of forming of classified training samples generated by an active masking jamming, for spatial processing of radar signals in a situation of the clutter influence.</p><p>Methods. The scientific novelty of this work is in developing a new method of forming the training samples based on the estimation of the width of the normalized autocorrelation function in each range resolution element. On-the-fly analysis of the components of combined clutter and jamming in each range resolution element improves the quality of the components classification and, as a result, minimizes the effect of passive clutter on a spatial filter adaptation process.</p><p>Results. The theoretical and practical aspects of the forming of the classified training samples are analyzed. A functional flow block diagram of the classifier of combined clutter components was developed.</p>Conclusions. Using of the on-the-fly analysis of the combined clutter and jamming components in each range resolution element improves the quality of the clutter classification, which is important in complex hydrometeorological conditions.Copyright (c) 2017 D. M. Piza, T. I. Bugrova, V. M. Lavrentiev, D. S. Semenovhttp://ric.zntu.edu.ua/article/view/125980GEOMETRIC MODELLING OF RAILWAYS SPATIAL TRANSITION CURVE2018-03-29T15:06:56+03:00V. D. Borisenkorvv@zntu.edu.uaS. A. Ustenkorvv@zntu.edu.uaI. V. Ustenkorvv@zntu.edu.ua<p>Context. The problem of geometric modelling of transitional curves, which are placed between rectilinear and circular sections of railway tracks, can be considered solved sufficiently. However, there are a number of factors that contribute to the development of new methods for modelling these important sections of the railway tracks. The main of them are the increase in the speed of the train, the increase in their mass, the limited size of the territory on which the railway is built, etc. The importance of this issue is greatly increased when laying rails in a mountainous area, when trains have to overcome the ups and downs, bend around natural and artificial obstacles. Under these conditions, the transition curves acquire a spatial character.</p><p>Objective. Further development of the method of geometric modelling of spatial transition curves, which are placed between rectilinear and circular sections of railway tracks located in two parallel planes.</p><p>Method. Transitional sections of the railway track are modelled using parametric curves, in which the length of the curve arc is taken as the parameter. To close the mathematical model of the transition curves, it is assumed that the curvature of the curve is subject to a polynomial dependence of the fourth degree, and torsion to the second degree. The unknown coefficients of these polynomial dependencies, which are necessary for calculating the coordinates of the simulated transition curves, are determined by a numerical method, in particular, by minimization of the functional for which the deviation of the intermediate obtained final point of the transition curve from the given one is accepted.</p><p>Results. On the basis of the proposed theoretical proposition, a program code for calculating and visualizing spatial transition curves providing a smooth transition from rectilinear sections of a railway track to a circular one is developed, provided that both these sections are in parallel planes.</p>Сonclusions. A new method is proposed for modelling the spatial transition curves of railway tracks, which are laid on the terrain with a complex relief. Practical implementation of many variants of spatial transition curves placed between the rectilinear and circular sections of the railway track has proved the operability of the method of their geometric modelling.Copyright (c) 2017 V. D. Borisenko, S. A. Ustenko, I. V. Ustenkohttp://ric.zntu.edu.ua/article/view/125997SOLVING OF ELASTIC DYNAMICAL PROBLEM IN A POROUS FLUID-SATURATED PIECEWISE-HOMOGENEOUS HALF-SPACE BY THE INDIRECT METHOD OF NEAR-BOUNDARY ELEMENTS2018-03-29T15:07:06+03:00L. M. Zhuravchakrvv@zntu.edu.uaN. V. Zabrods’karvv@zntu.edu.ua<p>Context. Solving the different applied problems of engineering and petroleum geology, geophysics and geodynamics, researchers often use methods based on phenomenon seismic-electrical effect of the second kind, since the electromagnetic field of electrical-kinetic origin is much more informative than the seismic one that generated it, and from it they can determine important petrophysical parameters (for example, porosity and fluid permeability) geological environment. At the first stage of investigation of this effect, the need of solving an elastic-dynamic problem arises, when the object of investigation is the processes of propagation of elastic waves in porous, fluid-saturated piecewise homogeneous media. This task also has an independent meaning for monitoring ecologically dangerous phenomena in the study of deformation processes in soil massifs, especially in mountainous areas, associated with their subsidence due to caverns, earthquakes, filtration of precipitation on the slopes and other phenomena.</p><p>Objective. Construction of a mathematical model for the propagation of elastic waves in piecewise homogeneous media; creation of software for its numerical implementation and testing of its effectiveness; carrying out numerical investigations of the dependence on the parameters of the medium on the distribution of the displacement components at the boundary of the half-space.</p><p>Method. We used the Bio theory to create a mathematical model of the problem and the indirect method of near-boundary elements to construct its numerical-analytical solution, last one is based on the theory of methods of boundary integral equations.</p><p>Results. The software that implements the near-boundary elements method for numerical and analytical modeling of the elastic-dynamic problem has been developed. Computational experiments were carried out to estimate errors of discretization of the near-boundary region and of approximation of the mathematical model.</p>Conclusions. The effect of change of the characteristics of an inclusion (in a form of a parallelepiped), in particular its fluid permeability and porosity, on the distribution of displacement components on the half-space boundary has been investigated. The practical recommendations of the recognition of inclusions have been done.Copyright (c) 2017 L. M. Zhuravchak, N. V. Zabrods’kahttp://ric.zntu.edu.ua/article/view/126097CORRECT STATISTICAL MODELING IN CONDITIONS OF INCOMPLETE INITIAL INFORMATION2018-03-29T15:07:25+03:00S. G. Radchenkorvv@zntu.edu.ua<p>Context. Urgent problem of statistical modeling of the complex systems and processes in conditions of incomplete initial information has been considered.</p><p>Objective. The work objective is the use of the method of formalized obtaining of the structure of multifactor statistical model and stable estimation of its coefficient for obtaining highly precise statistical models of elastic deformations of technological system of a lathe.</p><p>Methods. When solving applied problems, the analysis of initial data on obtaining statistical models has shown that they are often constructed in conditions of incomplete initial information and the problem which is solved is incorrectly formulated one. In such conditions the model structure obtaining and its stability prove to be the problems in models construction. The author proposes an extended conception of orthogonality of the obtained model: the experiment design, model structure and structure elements of the model are orthogonal. The orthogonal structure of the multifactor statistical model allows obtaining statistically independent estimates of coefficients of the modeled function. Such a structure may be defined unambiguously with statistically significant coefficients. Normalization of orthogonal effects permits obtaining a maximally stable model structure, and, consequently, its coefficients. The problem will be well-posed.</p><p>Results. Application of the considered method of formalized obtaining of the structure of multifactor statistical model and stable estimation of its coefficients is used for obtaining accurate statistical models of elastic deformations of a steel work-piece processed by a lathe. A complete factor experiment has been fulfilled; the factors were as follows: cutting force, work-piece length and diameter, and a response – the value of elastic deformations of the system. Statistical regression moments ˆy<sub>1</sub> and ˆy<sub>2</sub> were constructed as the experiment result. In the structure of models the factors are presented by orthogonal contrasts. Statistically significant effects are introduced in the model structure under its formation. The checks of the obtained models by quality criteria have shown their high informativeness, stability, adequacy, statistical efficiency. Using the models on lathes with numerical programmed control allows decreasing the number runs of the cutting tool and, consequently, the time of work-piece processing.</p>Conclusion. The results of the use of the extended conception of orthogonality and structure of the model of a complete factor experiment, when obtaining the models of elastic deformations of technological system of a lathe, have confirmed the great prospects of application of the considered approach, its effectiveness and expediency in constructing regression statistical models of complex systems and processes.Copyright (c) 2018 S. G. Radchenkohttp://ric.zntu.edu.ua/article/view/126187MODELLING AND ANALYSIS OF ELECTROPORATION PARAMETERS OF THE MEMBRANE OF A BIOLOGICAL CELL IN A VARIED INTENSITY PULSED ELECTRIC FIELD2018-03-29T15:07:37+03:00V. A. Shigimagarvv@zntu.edu.uaYu. Ye. Megelrvv@zntu.edu.uaS. V. Kovalenkorvv@zntu.edu.uaS. M. Kovalenkorvv@zntu.edu.ua<p>Context. The problem of constructing electroporation models for membranes of biological cells by the methods of nonlinear approximation using the experimental dependences of their specific electric conductivity on intensity pulsed electric field was solved in the paper.</p><p>Objective is a construction of models, which adequately describe the experimentally obtained nonlinear effects of the conductivity of the cell, including reversible electroporation, irreversible electrical breakdown or local reversible electrical breakdown of membranes at the fusion of two contacting cells.</p><p>Method. Polynomials of 8–10 degrees are chosen as the functions that modelling the experimental ones and the criteria for estimating the parameters of electroporation are the coordinates of the local extrema of their curvature and inflexion points that characterize the specified state of the cell membrane at current field intensity. The approximation problem was solved by the least squares method. The calculation of the estimate of the polynomials coefficients was carried out by the Gaussian elimination – the forward and reverse moves were realized. It is possible to search for extrema of the obtained polynomials of high degrees by specifying a calculation error. The root-mean-square error of the approximation is used for finding the degree of the polynomial. The current curvature of the polynomial is counted by calculating the first and second order derivatives of conductivity. The values of the curvature, which obtained via these methods, make possible to determine the inflexion points of the curve for purpose to determine breakdown of a cell membrane.</p><p>Results. Applied software was developed, polynomial models of the conductivity of a biological cell in a varied intensity pulsed electric field were constructed and their quantitative mathematical analysis was carried out by using this software. All these calculations are proved by graphs, some of which can be viewed on an enlarged scale.</p>Conclusions. The parameters of electroporation of a biological cell membrane obtained by analysing the curvature function of polynomial models are calculated. The developed analytical methods and software for determining the parameters of electroporation allow us to recommend them for use in practice in calculating the numerical values of the field intensity and conductivity at which specific electroporation regimes of the biological cell membrane are provided.Copyright (c) 2017 V. A. Shigimaga, Yu. Ye. Megel, S. V. Kovalenko, S. M. Kovalenkohttp://ric.zntu.edu.ua/article/view/126289ADVANCED TECHNOLOGIES OF BIG DATA RESEARCH IN DISTRIBUTED INFORMATION SYSTEMS2018-03-29T15:07:48+03:00N. І. Boykorvv@zntu.edu.ua<p>Context. Considered question correct interpretation information flow in distributed information systems. The object of study methods are promotion “big data” on cluster system.</p><p>Objective. Is the study promising areas and technology for the analysis of structures data in distributed information systems.</p><p>Method. The big data tendency prospects as well as timeliness of the problem are studied in this paper. The principles of work with them are addressed. Big data processing technologies are provided. The analysis of each one is performed. An example of “MapReduce” paradigm application, uploading of big volumes of data, processing and analyzing of unstructured information and its distribution into the clustered database is provided. The article summarizes the concept of “big data”. Examples of methods for working with arrays of unstructured data. Dedicated scientific guidance for analyzing big data. The principles of unstructured data in distributed information systems. Driven work platform “Hadoop MapReduce” and “Apache Spark”. Analyzed their properties and given the differences. An analysis of comparative performance against both platforms – the performance of the number of iterations. Consider ways to create RDD: parallelization transmitted collection program and a link to an external file system in “Hadoop”. There is an example rozparalelenoyi system RDD. Proposed work lone class for basic database operations: database connection, create a table, a table, get in line id, returning all elements of the database, update, delete and create the line.</p><p>Results. The analysis Models Spark and Hadoop MapReduce for phased construction distributed information system. built up SparkConf object, containing information about applique and is the final version of the experiment.</p>Conclusions. Conducted experiment confirmed efficiency the proposed method, are capable process horizontal data arrays, that parallelization by defective presentation of information. These promising areas of analyze structure data for the purpose of forecast results and create algorithms advanced correlation, contributing new understanding activity distributed information systems further research can consist in wide use information systems, that would provide a full range technological process adaptation information flows in clusters.Copyright (c) 2017 N. І. Boykohttp://ric.zntu.edu.ua/article/view/126292INTERVAL FUZZY CLUSTER ANALYSIS FOR ARTESIAN WEL L STATE MONITORING2018-03-29T15:08:42+03:00N. R. Kondratenkorvv@zntu.edu.uaO. O. Snihurrvv@zntu.edu.ua<p>Context. Monitoring natural systems of diverse nature is an essential condition of rational environmental management. Data Mining technologies, cluster analysis in particular, provide a wide range of capabilities for data sets visualization, which makes it possible for these technologies to be used by individuals with no specialized background in mathematics. The task of monitoring a system that changes its state in time requires extended interpretation of clustering result, which would allow accounting for historical data. Technical capabilities for revealing the nature of changes occurring in the object represented by a data set are of particular importance in water resources monitoring area, as they are strongly related to their environment, and the quantity of the available reserves depend on multiple factors, which are external to the water-bearing system. Upon commissioning, an artesian well requires constant monitoring in order to ensure proper management of groundwater processing, protection against pollution and exhaustion, and preventing negative effects of groundwater mining on the environment. In addition, high redundancy of the parameter space is typical for complex natural systems, as well as existence of both known and not yet discovered correlations between parameters. These factors necessitate the use of cluster analysis methods, which would be capable of operating within the conditions of uncertainty and parameter redundancy.</p><p>Objective. The goal of the research is extending the capabilities for analyzing changes in a system’s state in time by accounting for uncertainties present in observations data.</p><p>Method. An application of the interval fuzzy cluster analysis method for investigating changes in data set characteristics in time, and for revealing general trends, is proposed. Formalizing the technological problem faced by the research in terms of Data Mining provides for a possibility of simultaneously processing multiple input vectors. A step-by-step algorithm for interval evaluation of the state of a natural system based on historical observations data and current values is developed.</p><p>Results. The proposed model is adapted for solving the technological task of an artesian well monitoring, and its capabilities for revealing hidden patterns on early stages are demonstrated experimentally.</p>Conclusions. Interval fuzzy cluster analysis allows taking into account and modeling uncertainties of any given nature, which may occur in artesian well research data on different stages of monitoring. It is shown, that concurrent input of multiple wells data may allow to evaluate not only there position against the standard compact classes according to (potential) water quality, but also their position against each other, and eventually indicate a previously unknown pattern.Copyright (c) 2017 N. R. Kondratenko, O. O. Snihurhttp://ric.zntu.edu.ua/article/view/126354THE SYSTEM OF CRITERIA FOR FEATURE INFORMATIVENESS ESTIMATION IN PATTERN RECOGNITION2018-03-29T15:08:56+03:00A. Oliinykrvv@zntu.edu.uaS. Subbotinrvv@zntu.edu.uaV. Lovkinrvv@zntu.edu.uaO. Blagodariovrvv@zntu.edu.uaT. Zaikorvv@zntu.edu.ua<p>Context. The task of automation of feature informativeness estimation process in diagnostics and pattern recognition problems i solved. The object of the research is the process of informative feature selection. The subject of the research are the criteria of feature informativeness estimation.</p><p>Objective. The research objective is to develop the system of criteria for feature informativeness estimation which enables to comput informativeness of interdependent feature sets.</p><p>Method. The system of criteria for feature informativeness estimation is proposed. The proposed system is based on the idea tha feature significance is computed according to spatial location of observations of different classes (size of changing of output parameter) The developed criteria system enables to estimate individual and group feature informativeness in classification and regression problems in situations when initial data samples contain redundant and interdependent features as well as observations with missing values. The proposed criteria don’t require to construct models based on the estimated feature combinations, in such a way considerably reducing time and computing costs for informative feature selection. Application of the proposed criteria for estimation and selection of informative feature allows to reduce structural complexity of synthesized diagnosis and recognition models, to raise its interpretability and generalization ability due to removing of insignificant, interdependent and redundant features in diagnostics and pattern recognition problems.</p><p>Results. The software which implements the proposed system of criteria for feature informativeness estimation and allows to selec informative features for synthesis of recognition models based on the given data samples has been developed.</p>Conclusions. The conducted experiments have confirmed operability of the proposed system of criteria for feature informativenes estimation and allow to recommend it for processing of data sets for pattern recognition in practice. The prospects for further researche may include the modification of the known feature selection methods and the development of new ones based on the proposed system o criteria for individual and group feature informativeness estimation.Copyright (c) 2017 A. Oliinyk, S. Subbotin, V. Lovkin, O. Blagodariov, T. Zaikohttp://ric.zntu.edu.ua/article/view/126359THE DYNAMICS OF NONLINEAR OCILLATOR NEURON BY THE ACTION OF EXTERNAL NON-STATIONARY SIGNAL2018-03-29T15:09:06+03:00R. M. Peleshchakrvv@zntu.edu.uaV. V. Lytvynrvv@zntu.edu.uaI. R. Peleshchakrvv@zntu.edu.ua<p>Context. Deals with the problem of time-frequency and time dependence of the morphology of the signal at the output of nonlinear oscillatory neuron with regard to its threshold effect. The object of study is non-linear modified model of Van-der-Pol, which describes the dynamics of nonlinear oscillatory neurons under the action of various shape, frequency and amplitude of an external non-stationary signals.</p><p>Objective. Construction of nonlinear mathematical models of oscillatory dynamics of a neuron given its threshold effect under the action of a neuron to external non-stationary signals.</p><p>Method. In the approximation of Krylov-Bogoliubov-Mitropolskii the proposed method of successive approximations method for solving nonlinear differential equations of second order with quadratic nonlinearity of the unknown function with the first derivative. The proposed solution method allowed us to obtain the frequency-temporal and temporal dependence of the morphology of the signal at the output of nonlinear oscillatory neuron given its threshold effect when the effect on the neuron structure of the various input signals. Proposed coding information oscillatory nonlinear neuron on the basis of frequency modulation and decoding using the inverse operator which acts on the vector of the output signal.</p><p>Results. A non-linear model, the oscillatory neuron is implemented in the environment of computer algebra “Mathematica 7.0”. Investigation of frequency-temporal and temporal dependence of the morphology of the signal at the output of nonlinear oscillatory neuron given its threshold effect at various values of the parameters of the input non-stationary signal and different weight of synaptic connections.</p>Conclusions. The existence of the resonance effect in nonlinear neuron with equal external frequency non-stationary signal and frequencies of the dynamics of the neuron. It is shown that nonlinear oscillatory neuron plays the role of the frequency modulator and significantly alters the structure of the input information signal is non-stationary (shape, frequency and amplitude). Proposed coding information oscillatory nonlinear neuron on the basis of frequency modulation and decoding by using the inverse operator.Copyright (c) 2017 R. M. Peleshchak, V. V. Lytvyn, I. R. Peleshchakhttp://ric.zntu.edu.ua/article/view/126368RESEARCH OF HARDWARE EXPENSES IN MICROPROGRAM FINAL-STATE MACHINE WITH DATAPATH OF TRANSITIONS2018-03-29T15:09:49+03:00R. M. Babakovrvv@zntu.edu.ua<p>Contex. The problem of determining the hardware expenses in the logical circuit of a microprogram final-state machine with a canonical structure and a microprogram final-state machine with datapath of transition and various ways of generating of codes of transition operations was solved.</p><p>Objective. The goal of the work is the obtaining of analytical expressions for determining the hardware expenses in the investigated structures of microprogram final-state machine depending on parameters of the automaton when using the elemental basis of programmable logical integrated circuits.</p><p>Method. Based on results of HDL simulation, the experimental values of hardware expenses in typical functional blocks of digital devices are obtained. As a unit of measurement of hardware expenses, LUT elements, which are regular structural elements of the FPGA, are used. Among the typical functional blocks, a combinational logical circuit, a multiplexer, an arithmetic-logical operation circuit, and a register are investigated. By approximating the experimental data, analytical expressions for determining the hardware expenses in typical functional blocks, depending on the parameters of the blocks, are obtained. By replacing the parameters of typical functional blocks with parameters of the structural blocks of the microprogram final-state machines being researched, the analytical expressions to determine the hardware expenses in typical functional nodes are transformed in analogous expressions for separate structural blocks of automata.</p><p>Results. For each of the researched structures of microprogram final-state machines, analytical expressions for determining the total hardware expenses in the logical circuit of the automaton are obtained.</p>Conclusions. Received analytical expressions take into account the structural features of the Mealy and Moore automata and can be used to solve the problem of determining the field of effective application of the microprogram final-state machine structures with datapath of transitions.Copyright (c) 2017 R. M. Babakovhttp://ric.zntu.edu.ua/article/view/126478ROUND-ROBIN PREEMPTIVE SCHEDULER MODEL IN DISTRIBUTED REAL-TIME SYSTEM2018-03-29T15:09:56+03:00S. A. Dadenkovrvv@zntu.edu.uaD. A. Dadenkovrvv@zntu.edu.ua<p>Context. The problem of quantitative estimation of probabilistic and temporal characteristics of the planning node’s tasks subsystem for the design of distributed real-time systems has been solved. Round robin priority driven preemptive scheduler is the subject of research, used in distributed fieldbus-networks.</p><p>The goal is to create a model and a method of quantifying the probabilistic and temporal characteristics of the node’s task scheduling subsystem: delays and time intervals for solving problem, intensity of the information load on the industrial fieldbus-network channels.</p><p>Method. The method of probability theory has been used there to solve problems. State and transition graph of model has been offered, describing the functioning of cycle algorithm for scheduling node tasks. Analytical relations for estimating the main probabilistic and temporal characteristics of the task scheduling subsystem model have been got. Specifically, an average delay time for task processing, an average time interval between solving problems, an intensity of the information load on the fieldbus-network channels. The proposed model and method are different from well-known ones: with the detailing of the important parameters of the algorithm functioning, that weren’t previously analyzed: dissimilar levels of priorities, number of priority tasks, configuration characteristics of tasks, operation delays and frequency of events of scheduler, etc.</p><p>Results. The developed model and method of quantifying the probabilistic and temporal characteristics of tasks scheduling subsystem with round robin priority driven preemptive scheduler.</p>Conclusions. The conducted experiments have confirmed the proposed software operability and adequacy, allow recommending it for use in practice to solve problems of designing distributed real-time systems with specified time characteristics. During the design process tools will be used for determining: the allowable number of scheduler software modules and the distribution among them of the priority and non-priority tasks handled by the node, depending on the frequency of the technological events and the specified processing delay requirements.Copyright (c) 2017 S. A. Dadenkov, D. A. Dadenkovhttp://ric.zntu.edu.ua/article/view/126506EFFECTIVE ALGORITHM FOR PARSING SENTENCES USING SEMANTICALLY ATTRIBUTED WEIGHTED AFFIX CONTEXT FREE2018-03-29T15:10:45+03:00M. V. Davydovrvv@zntu.edu.uaO. V. Lozynskarvv@zntu.edu.uaV. V. Pasichnykrvv@zntu.edu.ua<p>Context. The problem of increasing efficiency of affix grammars over a finite lattice (AGFL) is considered. AGFL is a context-free grammar with flexible and compact form of productions for parsing texts in natural languages.</p><p>Objective. The goal of the work is to increase efficiency of parsing sentences by means of AGFL with a modification that adds semantical attributes to the productions and introduces a new form of production called the “template production”. This modification helps to decrease the number of productions that are required to describe a language and lets reduce the computational complexity of the parsing algorithm.</p><p>Method. A mathematical model of the template production is developed and the theorem is proved that claims that the normal form of the template production exists and the normalization procedure produces an equivalent grammar. The normal form is utilized to increase efficiency of parsing Ukrainian sentences. The template production helps to represent ontology-based rules in a short and computationally inexpensive way. The normal form of template production is studied, and an effective algorithm for parsing sentences is proposed. The worst-case complexity of the proposed algorithm is 0(n<sup>3</sup> m<sup>3</sup><sub>p</sub> m<sub>r</sub>), where n is the length of input string of terminals, m<sub>p</sub> is the maximum number of combinations of symbol and attributes that can produce the same string of terminals, and m<sub>r</sub> is the maximum number of productions that have the same starting non-terminal symbol in the right part. The growth of parsing time turned out to be almost linear function of the number of words in a sentence when parsing of sentences from the test database of Ukrainian fiction literature.</p><p>Results. The developed method has been implemented in the UkrParser software that is available open-source on GitHub.</p>Conclusions. The developed algorithm was tested on the database of Ukrainian sentences and demonstrated ten times faster parsing speed than Stanford parser. The future research can be focused on the development of grammatically attributed ontologies for wider set of topics that should improve results of semantical sentence parsing.Copyright (c) 2017 M. V. Davydov, O. V. Lozynska, V. V. Pasichnykhttp://ric.zntu.edu.ua/article/view/126515INFORMATION-ANALYTICAL SYSTEM ASSESSMENT METHODS OF COMPLEX OBJECTS2018-03-29T15:11:00+03:00T. V. Kozuliarvv@zntu.edu.uaM. O. Bilovarvv@zntu.edu.ua<p>Context. Formation of information-methodical, algorithmic and software sustainable development evaluation of ecological-socio-economic different complexity systems requires the formation of an integrated system approach to solving scientific problems.</p><p>Objective. Formation of methodological and information software for the evaluation of compliance state and functionality of the system object with the requirements of environmental quality from the standpoint of sustainable development, which makes it safe for the environment.</p><p>Methods for evaluation the quality of the system objects with different levels of difficulty are formed into an integrated analytical system for sequential processing solutions of tasks and evaluation of monitoring data: principal component analysis, comparator identification method and cognitive modelling.</p><p>Results. The analysis of common approaches to the formation of complex methodical support assessment of ecological and socio-economic systems state for the security management automation is given. The expediency of creating a methodical support system of system units quality estimation in accordance with the principles of sustainable development for decision making is grounded. Mathematical methods that provide system object security level analysis and evaluation of the research results “environment – the process – the equilibrium state of the system” are defined. Algorithmic support of system objects quality estimation and designed software are tested for solution of environmental safety problems at the level of regions and enterprises of Kharkov region. The prospects regarding the state of analyzed Kharkiv region enterprises management are identified.</p>Conclusions. Scientific novelty is defined by the formation of the complex methodological information and software support evaluation of environmental and safety system objects of ecological and socio-economic content, introduction to the methodological basis of the system analysis of objects estimation sequence “state (the system – environment) – the process (interaction, internal control, self-organization) – state of the system”. The practical significance is to develop an information-methodological and algorithmic support a comprehensive assessment of the environmental safety of complex ecological and socio-economic facilities; informational software solutions-level status assessment of safety problems of complex objects, mismatch parameters under consideration the requirements of a balanced sustainable development of the systems of different levels of study.Copyright (c) 2017 T. V. Kozulia, M. O. Bilovahttp://ric.zntu.edu.ua/article/view/126576OF CONTENT FORMATION AND ANALYSIS FEATURES IN ONLINE NEWSPAPER OF MUSIC NEWS2018-03-29T15:11:07+03:00M. V. Korobchynskyirvv@zntu.edu.uaL. B. Chyrunrvv@zntu.edu.uaV. A. Vysotskarvv@zntu.edu.uaE. O. Kondratievrvv@zntu.edu.ua<p>Context. Negative factors in shaping the content complicate necessary data finding process when scanning various sources. Increased volume and variable Relevance / content flow dynamics (regular and non regular updates) leads to duplication and excessive information noise content in search results. Coverage and synthesis of large dynamic flow of content are continuously generating Internet media requires qualitatively new methods / approaches of search as a content monitoring.</p><p>Objective. The work purpose is to develop content forming and anlizing method in online newspaper for the active involvement of regular users of news and information resource increase audytoryii target. The objective is to develop a system to distribute music news using content monitoring method for creation and content anlizing in information resource of online newspaper.</p><p>Method. Input information for content-monitoring is a natural language into a sequence of symbols, background information – a partition table, sentences and tokens analyzed text. Content monitoring is a software tool for automation of the important components in the flow of content. This is meaningful analysis of streams of content for the purpose of obtaining the necessary permanent qualitative / quantitative sections within pre-defined period of time not. Content monitoring component is content search and content analysis of the text. Content analysis designed to search for content in an array of data for linguistic semantic units. The unit of account is a quantitative measure of the unit of analysis that allows you to record the frequency (regularity) symbol appears in the text analysis category (number of certain words or combinations of lines, characters, pages, paragraphs, copyright sheets of text area, etc.).</p><p>Results. The problem of current research and development of methods and means of processing information resources information systems intellectual formation content with the use of the classification, mathematical and software and the generalized system architecture are solved. The necessity of methods and means development of information resources processing in intelligent information systems forming content by improving the system architecture to automate processes of formation, management and implementation of content.</p>Conclusions. The content analysis use in monitoring Internet data sources automates the finding process of the most important components in content flow in data selection from these sources. This eliminates duplicate content information noise, parasitic content redundancy results and more. This method is used in subsequent stages of content for more accurate relevant results – create a unique content that is in demand.Copyright (c) 2017 M. V. Korobchynskyi, L. B. Chyrun, V. A. Vysotska, E. O. Kondratievhttp://ric.zntu.edu.ua/article/view/126585STRUCTURAL OPTIMIZATION OF THE SYSTEM OF OPTICAL-ELECTRONIC OBSERVATION2018-03-29T15:11:27+03:00R. V. Rachokrvv@zntu.edu.uaO. V. Borovikrvv@zntu.edu.uaL. V. Borovikrvv@zntu.edu.ua<p>Context. In border security uses a system of optical-electronic observation, which presents a set of towers that have radar, thermal imaging and video surveillance. The efficiency of detecting trespassers with the use of this system significantly depends on its functional and structural construction. The functional structure of system of optical-electronic observation is determined by the selection of technical means of surveillance (TCS) based on their functionality. Structure of the system depends on the choice of the locations of observation towers with the physical and geographical conditions of the terrain and technical characteristics of the TCS. The imperfection of the scientific methodological apparatus in the field of structural optimization of building of system of optical-electronic observation was determined by the relevance of the study.</p><p>Objective. The aim of this work is to develop a method of structural optimization of the placement of the system of optical-electronic observation towers.</p><p>Method. In work the task of optimizing the placement of the towers of system of optical-electronic observation and the proposed method of its solution, which involves the maximization of efficiency of functioning of the system. The peculiarity of this method is the use of geomodel to reduce the number of accommodation of the towers of the system, the use of the author’s approach to sampling of spatial data and high-speed algorithm for calculation of efficiency of functioning of system of optical-electronic observation.</p><p>Results. The paper shows the advantages of the proposed method compared to previously proposed approaches for the choice of rational placement of towers on the basis of cluster analysis. In this work the proposed software-algorithmic implementation of the method to structural optimization of the system of optical-electronic observation. The authors describe the description of algorithmic and software implementation of this method. Using the developed software optimized placement of the towers of the system of optical-electronic observation, certain recommendations regarding the structure of this system.</p>Conclusions. Using the proposed method allows to carry out structural optimization of building of system of optical-electronic observation due to the placement of observation towers with the maximization of efficiency of functioning of this system. A possible direction of improvement of the method is a refinement of the results using a higher resolution geomodel.Copyright (c) 2017 R. V. Rachok, O. V. Borovik, L. V. Borovikhttp://ric.zntu.edu.ua/article/view/126655VERIFICATION MODEL FOR THE SYSTEMS WITH LIMITED RESOURCES2018-03-29T15:12:12+03:00G. V. Tabunshchykrvv@zntu.edu.uaT. I. Kapliienkorvv@zntu.edu.uaO. V. Shytikovarvv@zntu.edu.ua<p>Context. In the article the task of systems with limited resources verification is considered. One of the challenges for implementation of concurrent minicomputer systems for implementations its in real products is high requirements to the limited hardware. As a result it course additional requirements for them and limited the sphere of their implementation especially in critical real-time systems in medicine or defense industry. That’s why development verification tools for minicomputer systems is actual task. The object of the research – the process of modelling of reconfiguring systems with limited resources functionality.</p><p>Objective – to improve reliability of systems with limited resources by ensuring of data integrity and automating of the verification process.</p><p>Method. The model of systems with limited resources verification based on the verification model of web-oriented systems is obtained, which describes the verified components of objects and the way of data exchange based on the dynamic model of data transmission. The concept of “functional unit” has been modified by adding hardware blocks, which makes it possible to automate the testing of these elements. The advantage of this model is that it collect results of verification of the devices connected to the minicomputers systems and describes the optimal period for reading archive files, which improve the relevance and integrity of test results for systems with limited resources. As a case study, the architecture of a minicomputer system based on Raspberry Pi was considered by the authors.</p><p>Results. Developed model was applied for the verification of the remote laboratory for reliability tasks (ISRT).</p>Conclusions. In the article the modified model for system with limited resources verification is suggested, which in contrast to web-oriented verification model describes adaptive architecture of the embedded systems and use model for data transition into the external storage, which make possible to implement this model for variety of hardware configurations.Copyright (c) 2017 G. V. Tabunshchyk, T. I. Kapliienko, O. V. Shytikovahttp://ric.zntu.edu.ua/article/view/126687A SOFT FUZZY ALGORITHM OF THE MOBILE ROBOT CONTROL2018-03-29T15:12:18+03:00M. V. Bobyrrvv@zntu.edu.uaN. A. Milostnayarvv@zntu.edu.ua<p>Context. The task of a mobile robot control on the base of soft algorithm fuzzy inference has been solved.</p><p>Objective is the creation of soft algorithm of the fuzzy inference which allows to provide additivity of fuzzy control system.</p><p>Method. A soft algorithm of fuzzy inference used to control the mobile robot is suggested. Given algorithm allows to compensate errors inherent to the traditional models of fuzzy inference. Errors include: the curse of dimensionality, the absence of additivity and the fuzzy partition. This soft algorithm of fuzzy inference at the expense of rational allocation of premises and conclusions in a matrix of fuzzy relations, reduces the number of operations of the fuzzy inference. Another distinctive feature of the proposed soft algorithm is that in fuzzy inference to find minima and maxima used soft arithmetic operators. The paper shows that during the work of hard formulas for the implementation of these formulas while controlling the mobile robot the situations will appear when the robot loses control. The article points out that the implementation of the possibility in soft algorithm of fuzzy inference option of changes in parameters of sigmoidal membership functions will minimize the error at fuzzy system output. Dynamics of changing RMSE ratio from the varying parameters of sigmoidal membership functions proves it. The additional simulations presented in the article shows that during varying the parameters of sigmoidal membership function, during in increasing of the parameter a, is being observed decrease in the value of RMSE. The effectiveness of the proposed soft algorithm is confirmed by numerical simulation and experiments in the researching of a mobile robot movement along a line.</p><p>Results. The specialized software for microcontroller Arduino Uno is developed and it realizes the proposed soft algorithm which allows to carry out an experimental study of its properties.</p>Conclusions. The software realizing proposed algorithm has been developed and used in computational experiments investigating the properties of the algorithm. The experiments confirmed the efficiency of the proposed algorithm and software.Copyright (c) 2017 M. V. Bobyr, N. A. Milostnayahttp://ric.zntu.edu.ua/article/view/126690METRICS OF MANAGEMENT AND CONTROL REQUIREMENTS PROCESSES IN PROJECTS2018-03-29T15:12:27+03:00Yu. Yu. Husievarvv@zntu.edu.uaO. S. Martynenkorvv@zntu.edu.uaI. M. Kadykovarvv@zntu.edu.uaI. V. Chumachenkorvv@zntu.edu.ua<p>Context. The processes of requirements management are a key factor in the success or failure of the project. Researches in the field of project management indicate that these processes are not formalized. Thus, there is need to develop and formalize methods of requirements management and control, particularly for projects which are carried out by combined or traditional methodologies.</p><p>Objective of the article is formalizing of requirements management processes metrics in projects. The object of the research is management and control requirements processes of projects, the subject of the study – metrics that characterize the requirements of the project.</p><p>Method. Methods used are analysis and synthesis, methods of fuzzy sets and operations on matrices. The use of a model that establishes relationships between individual characteristics of the project (risks, resources, requirements, stakeholders and decision-makers of the project) through WBS is proposed. A formalization of model metrics is proposed that will keep track of the project and identify project stakeholders through the defined areas.</p><p>Results. Based on the comparison of WBS with a hierarchical structure of requirements, risks, resources and organizational structure of the project method of formalizing metrics requirements management project is developed. The proposed method allow to track the performance of project stakeholders’ requirements according to the actual amount of resources spent by analogy with the method of earned value. Adaptability to the traditional project management processes lets you use the original data – assets of the project and standard software (eg, MS Project, OpenProj) for the practical implementation of the method.</p>Conclusions. The proposed method formalizes requirement management processes in the project, determines resource and risk load of requirements, supplementing the existing requirements classification models with these metrics. The proposed method can also provide metrics for evaluation the performance of the project team and project stakeholders classification. The conducted experiments have confirmed the efficiency of the proposed mathematical software and allow recommending it for use in practice for making project decisions about change management and requirements management of the project. Prospects for further research may include developing of software that will implement the proposed method.Copyright (c) 2017 Yu. Yu. Husieva, O. S. Martynenko, I. M. Kadykova, I. V. Chumachenkohttp://ric.zntu.edu.ua/article/view/126710SYNTHESIS THE DIGITAL REGULATORS OF LOWERED ORDER FOR THE RESERVED SYSTEMS MANAGEMENT BY CONTINUOUS OBJECTS2018-03-29T15:12:37+03:00I. V. Zimchukrvv@zntu.edu.ua<p>Context. Complication of digital regulator of the closed control systems by the continuous objects is determined by the dimension of mathematical model of control object, which given as a transmission function. In practice more preferable are simple regulators a dimension of which is a less dimension of object. For this reason a task of synthesis the control system with use the linear regulators of subzero order is the article attention of many researchers.</p><p>Objective. Exposition the results of development methodology by synthesis of digital regulators the lowered order with the assured control quality on the basis of reduction transmission function of control object.</p><p>Method. Simplification of regulators is arrived at by using for the synthesis the reduction transmission function of control object. A synthesis it is suggested to execute in two stages. On the first stage reduction of transmission function of management object comes true. The criterion quality of reduction is accordance the values of integral estimations quality of transient initial and simplified models the management objects reserved by the single negative feed-back of the automatic control system. The quality criterion is arrived at by providing the accordance of indirect indexes quality of transient initial and reduction models. On the second stage the direct synthesis of digital regulator will be realized. The use of synthesis method of compensative regulators is in-process shown.</p><p>Results. Application of the expounded approach is shown on the example of synthesis the digital regulator for FLL system. Work example and simulation results are presented.</p>Conclusions. Unlike the known approaches, accordance between initial and simplified transmission functions arrived at by the appropriation to reduction model the values of indirect indexes quality of initial model transient, which are determined on frequency descriptions. Practical meaningfulness of work consists in creation the methodology synthesis of simple linear digital regulators for reserved control system continuous objects.Copyright (c) 2017 I. V. Zimchukhttp://ric.zntu.edu.ua/article/view/126998THE INNOVATIVE CONTROL OF THE HEATING UP PROCESS OF THE METAL IN THE FURNACE USING SPATIAL ELECTRIC FIELD2018-03-29T15:12:50+03:00Y. G. Kachanrvv@zntu.edu.uaA. A. Yerofieievarvv@zntu.edu.ua<p>Context. The actual task of developing an innovative control system for the process of metal heating up in the chamber furnace has been solved in the work.</p><p>Objective is a creation of an algorithm for the controlling of the heating up of the metal with additional use as the controlling influence of a spatial electric field in the furnace chamber.</p><p>Method. A regression model of a real chamber furnace was obtained using well-known experimental design techniques. The model is the basis of the algorithm and takes into account the magnitude of the voltage between the burner and the metal cage.</p><p>Results. A control system for the chamber furnace has been developed, in which the optimal values of control actions at each step of the heating cycle are determined according to the created algorithm. The proposed control system is universal, it gives the dynamics of the change in the constant voltage and the gas supply in steps in time j to perform any given mode of heat treatment of the metal. The carried out experiments on a real chamber furnace with a withdrawable hearth at OOO «Zaporizhzhya Titanium and Magnesium Plant» have confirmed this. Analysis of the obtained graphs of the annealing temperature of the metal. There is a high uniformity and a better quality of metal heating when implementing the optimal values of control actions obtained with the help of the algorithm. The dynamics of gas consumption by the chamber furnace during the heating cycle is shown in accordance with the optimization performed without the supply of voltage and with the supply of voltage. The obtained data testify to the possibility of a significant increase in the energy efficiency of the furnaces in question.</p>Conclusions. For the first time, the possibility and efficiency of using a spatial electric field in the furnace chamber as a control action has been proved, which confirms the scientific novelty of the results obtained. The developed control algorithm is universal from the viewpoint of thermal treatment of metal and can be used in chamber furnaces of any industrial enterprise. During one heating cycle, natural gas consumption is reduced by more than 10%, which confirms the practical importance of research.Copyright (c) 2017 Y. G. Kachan, A. A. Yerofieievahttp://ric.zntu.edu.ua/article/view/127013ALGORITHMIC PROCEDURES OF SYNTHESIS OF VARIABLE STRUCTURE SYSTEMS FOR MARINE VEHICLES CONTROL2018-03-29T15:12:56+03:00V. L. Timchenkorvv@zntu.edu.uaD. O. Lebedevrvv@zntu.edu.ua<p>Context. Algorithmic procedures for synthesizing optimal speed systems with variable feedback structure and a given dimension of the vehicle model, required type of stabilization trajectories and constraints on control actions are proposed for solving the tasks of increasing level of automatization control processes of marine vehicles at maneuvering and dynamic positioning. The study object are dynamic processes which stabilize marine mobile objects in conditions of incomplete informative nature of their models and the environment. The subject of the research is automated algorithmic procedures for synthesis of optimal control systems with variable feedback structure.</p><p>Objective – to increase the level of automation and quality indicators for the control processes of marine mobile objects on the basis of creating automated procedures for the synthesis of robust-optimal systems.</p><p>Method. To optimize control processes, optimal stabilization trajectories are formed, also the necessary switching moments and the type of control functions are determined for the feed-backs of optimizing control processes. Nonlinear models of marine vehicles with incomplete informativeness of model parameters and external disturbances are considered. The robust correcting control circuit providing compensation of the errors of the actual trajectory of physical object from the optimal trajectories, which arise from a mismatch between the parameters of the model and the physical object and from the effect of uncontrolled disturbances, is proposed. Thus, the control system is invariant for incomplete informativeness of models and minimal values errors of control can be achieved.</p><p>Results. The algorithmic procedures for synthesizing robust optimal systems of variable structure have been implemented and studied in the simulation of the stabilizing process of a mobile marine object on a given trajectory, the results of which confirmed the correctness and effectiveness of the proposed approach.</p>Conclusions. On the basis of systems with variable feedback structure for the criterion of optimality for the maximum operating speed, algorithmic procedures for the automated synthesis of control functions for multidimensional nonlinear systems describing the dynamics of mobile marine objects have been developed. The software tools for automating the synthesis process and schematic solutions of control systems are practically applicable for a wide class of mobile objects of various technical purposes.Copyright (c) 2017 V. L. Timchenko, D. O. Lebedev