ISSN 2224087X (Print) ISSN 22240888 (Online)
Collected scientific papers "Electronics and information technologies"
(In 19662010 published under the title "Electrical engineering")
(Certificate of State Registration ÊÂ ¹176186468ÏÐ from February 11, 2011)
Issue 3 Issue 3, Pages: 327 
Electronic speckle pattern interferometry techniques for research of material surface deformations 
L. Muravsky, T. Voronyak 
The state oftheart of electronic speckle pattern interferometry (ESPI) techniques for studying surface displacements and deformations in structural materials and different products are considered. Principles of speckle and speckle interferogram generation are formulated. Correlation ESPI techniques are analyzed and examples of their application for nondestructive testing are represented. The especial attention is paid to temporal and spatial phaseshifting ESPI techniques, which are dominant among the rest due to the high sensitivity and possibility to precisely measure the surface displacement and strain fields. Heterodyne and Fourier transform ESPI techniques are also considered. The increasing part of ESPI methods for laboratory research and field observation in nondestructive testing and technical diagnostics is marked 

Issue 3, Pages: 2833 
Dynamics of relaxation excitationsin mesoscopic cluster during superradiation decay 
L. Demkiv, Ò. Demkiv 
The apparatus density matrix and semiclassical approach are used to study the dynamics of superradiation pulse formation in a system with a high density of excited particles  dipoles which affect each other by interacting dipole moment with the total electromagnetic field of a number of neighboring dipoles. Consideration of dipoledipole interaction at the micro level allows to explain new experimental facts in optics nanoparticles. The influence of system parameters, which forms a mesoscopiccluster, and single particle parameters on the dynamics of the relaxation was investigated 

Issue 3, Pages: 3439 
Temperature sensor on the basis of Tl_{4}HgI_{6} and Tl_{4}PbI_{6} crystals 
V. A. Franiv, O. V. Bovgyra, I. S. Girnyk, O. S. Kushnir, O. V. Futey, A. P. Vaskiv 
In this work we report the results of experimental studies of Xray structural, mechanical and optical properties of semiconductor Tl_{4}HgI_{6} and Tl_{4}PbI_{6} crystals. Considering a peculiar temperature behavior of linear thermal expansion of those crystals, we suggest a temperature sensor and a scheme of temperature controller on their basis 

Issue 3, Pages: 4046 
The electron polarizability of uniaxially clamped of potassium sulfate crystals 
Î. Êashuba, V.Stadnyk, ².Ìàtviishyn 
The temperature and baric dependences of the electron polarizability of potassium sulfate crystal have been calculated. It is established that uniaxial pressures increases the electron polarizability, mainly because of the increase in the oscillator density and redshift of the ultraviolet absorption band maximum. It is found the substantial baric displacement of the ferroelastic phase transition point both in the side of higher (σ_{õ}) and lower temperatures (σ_{y}, σ_{z}), and temperature interval of the intermediate phase, nearby phase transition in crystals K_{2}SO_{4} 

Issue 3, Pages: 4753 
Luminescence spectroscopy of Tb^{3+} ions in polycrystals of gadolinium gallium garne 
L. Kostyk, A. Luchechko, O. Tsvetkova, T. Teplyy 
Spectralluminescent and kinetic properties of gadolinium gallium garnet doped with terbium in the temperature range 85295 K were investigated. The photoluminescence spectra are characterized by a series of intense narrow bands in the spectral region 480690 nm (green luminescence), which are corresponded to ^{5}D_{4}→^{7}F_{j}transitions in ions Tb^{3+}. It is shown, that in polycrystals, in contrast to single crystals, one type of luminescence centers associated with Tb^{3+} activator is formed. The correlation between the photoluminescence intensities do not differ in case of excitation in the fd band (transition in Tb^{3+} ions) or λ_{m} = 314 nm (^{8}S_{7/2}→^{6}P_{7/2} transition in Gd^{3+} ions) 

Issue 3, Pages: 5461 
Features of electrophysical characteristics of elastically deformed monocrystals of pSi 
B. Pavlyk, R. Didyk, R. Lys, D. Slobodzyan, A. Hrypa, J. Shykoryak, Ì. Kushlyk, I. Tshehil 
Were investigated changes in the resistance of monocrystalline pSi sample at room temperature in the process of compression or removal of mechanical deformations. Found that during exposure of the sample with stoped press, resistance of the sample increases. Investigated, that between individual cycles of deformation occurs gradual and prolonged increase in resistance of the sample. Selectively etching of the surface (111) found an increased defectiveness of sites on the surface layer of the sample that was inflicted with film of aluminum. This fact, according to the authors, causes a change in resistance of the sample under uniaxial its elastic deformation 

Issue 3, Pages: 6269 
Investigation of optical absorption spectra of mixed tutton salts crystals K_{2}Cu_{Õ}Fe_{1X}(SO_{4})_{2}·6H_{2}O 
I. Polovynko, S. Rykhlyuk, T. Londar 
Tutton salt’s crystals K_{2}Cu_{Õ}Fe_{1X}(SO_{4})_{2}·6H_{2}O were grown from water solution of K_{2}SO_{4}, FeSO_{4}·7H_{2}O and CuSO_{4}·5H_{2}O salts. Aabsorption spectra of these crystals were investigated in the range 4001220 nm. The relation between the optical absorption coefficients at maximum of absorption bands and the admixture concentration of Cu^{2+} ions has been found. 

Issue 3, Pages: 7078 
Radiation processes in crystals with point defects in dipole type. Onedimensional model 
Z. Chornij, I. Pirko, V. Salapak, N. Dyachuk 
The calculations of possibility of colouring centers creations in crystals CaF_{2}Me^{+} were conducted in onedimension model. The influence of doping ions on the effectiveness of crystal coloring was researched. 

Issue 3, Pages: 7987 
Temperature dependence of thermoelectric power and band spectrum transformation of Tl_{2}Ba_{2}Ca_{1X}Y_{X}Cu_{2Y}Co_{Y}O_{Z} system 
O. Babych 
Using a phenomenological model of a narrow band the analysis of the temperature dependence of the thermopower coefficient S(T) at T>T_{ñ} for Tl_{2}Ba_{2}Ca_{1X}Y_{X}Cu_{2Y}Co_{Y}O_{Z} in the case of substitution Y→Ca and Co→Cu was carried out. The structure of the density of states at the Fermi level E_{F} is depicted in the form of an asymmetric Lorentzian. The good agreement between the calculated dependencies S(T) with the experimental data was obtained. Defined The values of the band spectra parameters in the vicinity of Å_{F} was defined and character of their transformation was considered. We found a correlation between effective width of band and superconducting transition temperature T_{ñ} 

Issue 3, Pages: 8895 
Development of universal neuroemulators based on consumerlevel microcontrollers 
A. Farenyuk, Z. Lyubun 
In this paper we have shown that consumerlevel controllers can be used to implement neuroemulators. We have used following controllers: 8bit AVR family ATmega2560 (256Kb program memory) and ATtiny13 (1Êá program memory); 32bit ARM CortexM3 family, STM32F100RB (128 Êá program memory). Several neural networks of different architecture and size were implemented to analyze data from microcontroller inputs and act correspondingly. Thus it was shown that neural networks can be implemented in wide variety of platforms. Also demonstrational surface color recognition device based on neural network implemented on ATmega2560 was developed. It was show that careful use of powersaving modes greatly increases autonomous working time. 

Issue 3, Pages: 96107 
Mathematical modelling of process quadrocopter stabilization in flight 
B. Blahitko, Yu. Mochulsky 
The results of investigation of quadrocopter in flight mathematical model with the properties of electric motors are considering. The mathematical model is presented by system of algebraicdifferential equations in the Cauchy form of the 12th order. Input information is the value of quadrocopter altitude, of pitch angle, roll angle, yaw angle and their changes with timeflow. The proportionaldifferential (PD) control is used in order to stabilize a quadrocopter in flight and to ensure the optimal output of a quadrocopter into the specified mode. PD controller changes the variations of the thrust of the four traction engine, screws, sign variations and times at which all of these changes should be applied. Stabilization quadrocopter tested in flight for example automate simple aerobatics figure,  a horizontal figure eight , as a righthand and lefthand turns. 

Issue 3, Pages: 108121 
Features of construction of thermal model from by convection of the upper Earth’s mantle 
V. Fourman 
The correlation mantle thermo state from possible temperature variations are showed and Earth’s upper mantle them model is constructed. The obtaining mantle’s temperature from observer about the thermal flooding including factor uncertainty, which connected with complexity determination crust’s component from the results of interpretation of the observer thermal flooding. It should be noted about correlation between thermal process convection into upper mantle and value of thermal flooding in the Earth’ crust. 

Issue 3, Pages: 122132 
The boundary element method for problems of cavities identification in cylindrical solid with the use of local heating and the data of IRthermography 
V. Chekurin, O. Sinkevych 
In the paper the theoretical bases and mathematical tools for contactless methods of nondestructive identification of geometrical parameters of cylindrical tunnel cavity in a cylindrical solid has been considered. The method is based on stationary thermal process excitation in the object and measuring its surface temperature field with the use of IRthermography. The mathematical model for sounding of the object by local heating with concentrated thermal flux has been built with the use of boundary integral equations method. In the scope of the model a boundary element algorithm for the direct problem of cavity identification has been developed. On this basis informative parameters of the surface temperature field, which can be measured by IRthermography technique, were studied and possibilities to use them for cavity identification have been approved. It was shown that one of the cavity identification parameters can be determined directly from one of informative parameters. With this accounting the inverse problem was reduced to solving of a system of two nonlinear equations. An iterative boundary element method for solving this problem, based on the Newton method, has been developed. An effectiveness of the developed method has been demonstrated with the use of numerical experiment. 

Issue 3, Pages: 133143 
Improvement of the ADSL data transmission technologies family by the use of amplitude modulation of many components 
I. Gorbatyy 
The known ADSL technologies family that applies for the data transmission by the telecommunication access networks on the basis of symmetric telecommunication lines was considered. The dependence of data transmission throughput of leased telecommunication channel on the basis of ADSL technology from the telecommunication line length in stripe of working frequencies 1,104 MÍz and 2,208 MÍz was given. The method of adaptive data transmission in the telecommunication access networks on the basis of symmetric and coaxial telecommunication lines with the use of amplitude modulation of many components (AMMC) was offered. The possibility of reduction of the bit error rate in the process of data transmission and rise of efficiency of telecommunication access networks in case of application of offer method was shown. 

Issue 3, Pages: 144155 
Crossplatform programming model of the drill string in liquidation sticking jar 
Å. R. Alekseev, À. À. Karakozov, T. V. Kucher 
The mathematical model of the dynamic processes in the drill string is described. A finitedifference scheme for solving the hyperbolic equation in three phase’s cycle mechanism is considered. Software of the solution is analyzed. The choice of the compiler used in the programming model is reasonable. Engineering analysis of the resulting simulation solutions is carried out. 

Issue 3, Pages: 156168 
Digital image processing algorithm for material deformation characteristics definition 
O. Maksymenko, L. Frankevych, O. Sakharuk 
Algorithm for displacement and deformation measurements of a beam specimen surfaces during their loading was developed on the basis of Digital Speckle Correlation technique and its experimental verification was performed. Duralumin beam specimen’s radius of curvatures, deformations and coefficients of elasticity was determined experimentally. Received results testify effectiveness of developed algorithm performance. 

Issue 3, Pages: 169175 
Supervisory control and data collection OpenSCADA 0.8.0 LTS 
R. Savochenko 
Free software improved and occupies more areas of human activity. One such area is the automated systems, where open solutions are increasingly the critical factor. The article as a whole devoted to a review of the new industrial version 0.8.0 of the project free SCADAsystem OpenSCADA for longterm support. To gain insight about the project as a whole will also briefly presented history, policies and functions of the project. Since this is the second version for longterm support it is natural there are several complete solutions based on OpenSCADA, an overview of which is given in the article. Six months gone after the release and to version 0.8.0 already released several updates, the most interesting of which are considered. 

Issue 3, Pages: 176184 
Data segmentation threshold of the Earth remote sondage images 
R. Sulymko, R. Shuvar 
In this paper, the technique of high resolution bitmap segmentation is proposed. The result of it is a draft raster image segmentation, which consider their textural characteristics in addition to color characteristics into. The operation of the program and examples of processed bitmaps are described. The effectiveness of various threshold value selection for the coefficient of deviation of different textures in images is shown. The effectiveness of the implemented project is analysed on different image textures. 

Issue 3, Pages: 185192 
Ion transport calculation in crystals with the structure of scheelite 
V. Shevchuk, I. Kayun 
Using program package TOPOS VoronoiDirichlet polyhedra for CaMoO_{4} crystals were calculated and migration map were constructed at different temperatures. The possibilities of existence of ionic conductivity in crystals with scheelite structure at high temperature were shown. 

Issue 3, Pages: 193201 
Empowering the optimal traffic management of the road network in the city 
V.Shuts 
The article deals with the traditional methods of management of transport flows in the road network. The main instruments of traffic management of the road network in the city at the specific moment is the regulation of traffic lights. Key nodes of the road network in the city are the intersections. That they observed the greatest losses as the use of the roadway. Now for the traffic signal control is used singleprogram rigid, multiprogram, coordinated control, adaptive control, and intelligent traffic light. All of these control methods are described in detail and their shortcomings. Opportunities to meet the needs of society in escalating volumes of passengers and freight through the use of regulation to control the traffic lights have been exhausted  especially in large cities. Now a need to develop fundamental measures for more effective use of transport resources: roadway, intersections, interchanges, etc. Proposed in this paper concept means no traffic lights at the intersection and is based on the principle of multiagent system. 

Issue 3, Pages: 202210 
Polymetric method and modern cybernetics 
P. Trokhimchuck 
Basic notions and conceptions of polymetric analysis and its bond with modern cybernetics are analyzed. Necessary of creation of this science is caused of the development of modern cybernetics and informatics. Comparative analysis of basic theories and conceptions, which allowed creating polymetric method, is represented. Questions of systematization of modern science and knowledge are discussed. Basic applications of polymetric method in cybernetics and physics are represented. 

Issue 3, Pages: 211219 
Building ARIMA time series models for weather data predicting using R programming language 
O. Dzendzelyuk, L. Kostiv, V. Rabyk 
The algorithm of ARIMA time series model construction based on the BoxJenkins methodology is reviewed. The description of the criteria used for the verification of time series stationary mode, selection of the optimal ARIMA model and its reliabiliy testing is discussed. The main attention is focused on the implementation of this algorithm in R programming language. As an example, the implementation of shortterm forecasting of ambient temperature in Chornogirska geographical station was done. 

Issue 3, Pages: 220225 
Using virtualization technologies in courses "System administration OS Linux" 
A. Batiuk, D. Vankevych, G. Zlobin 
The paper considers the use of available systems virtualization OpenVZ and KVM in the learning process of the Department of Radio Physics and Computer Technologies Ivan Franko Lviv National University. The advantages of using virtualization technologies in comparison with the performance of the tasks of system administration of Linux in the workplace student in a computer lab for general use. 

Issue 3, Pages: 226231 
Application of coupled oscillatory circuit in eddycurrent defectoscopy 
D. Trushakov 
The work contains the results of theoretical research for application of coupled oscillatory circuit in eddy current defectoscopy (eddy current nondestructive testing). There has been represented a basic advantages of application a coupled oscillatory circuit for resonance eddy current defectoscope. 

Issue 3, Pages: 232236 
Numerical methods and conservation laws in dynamical systems 
V. Brygilevych, S. Velgosh, V. Hryhorenko, Ya. Shmygelsky 
The class of conservative dynamical systems, for which the midpoint numerical simulation method retains the property of conservation, is emphasized 

© Ivan Franko National University of Lviv, 2011
Developed and supported  Laboratory of high performance computing systems
