GENERALIZED COOPERATIVE CONCATENATED CODING

Shavgulidze S.A., Tabuashvili G.O., Asanidze A.V. and Barbakadze S.Sh.

Georgian Technical University

 

Abstract.  We consider a cooperative coding scheme based on generalized concatenated convolutional codes with systematic encoding of partitioned subcodes. The new scheme supports more than two cooperative users and utilizes the iterative multistage decoding. We assess the performance of the proposed scheme in nonselective frequency slow-fading channels. Our assessment of the performance is based on computer simulation. The results showed that the new generalized cooperative concatenated coding scheme can give an energetic gain over the common concatenated coding scheme.

Keywords: coded cooperation, generalized concatenated convolutional codes, iterative decoding.

 

ON THE MEASUREMENT OF MATHEMATICAL EXPECTATION 

ON RANDOM VARIABLE BY ANALOG METHOD

 

Machavariani G.A. and Dalaqishvili T.O.

 

V. Chavchanidze Institute of Cybernetics, Georgian Technical University

 

Abstract. The distributed artificial intelligence system construction on the principles of multi-agent systems and automata collective behavior requires the simple devices of information processing that must act autonomously. In this paper is suggested the simple realization of the mathematical expectation measurement of the normal distribution random variable.

Keywords: multiagent systems, automata collective behavior, hybrid systems.

 

SUMMARY

 APPROXIMATE SOLUTIONS TO NON-STATIONARY   CONJUGATED

 TASKS OF HEAT TRANSFER UNDER LAMINAR FLUID FLOW IN CHANNELS

Tsutskiridze V.N.

Georgian Technical University

The paper deals with a new approach to the solution of unsteady conjugated heat transfer problems for a laminar liquid flow. This approach uses the analytical method based on the simultaneous application of the integral Laplace-Carson transformation, and the Bubnov-Galerkin and Kantarovich methods.

Keywords: heat  exchange, liquid, laminar flow, conjugated tasks, channel.

 

SUMMARY

ORGANIZATION OF IT-INFRASTRUCTURE AND THE COLLABORATE WORK ON ELECTRONIC DOCUMENTS IN SMALL BUSINESS WITH MINIMUM EXPENSES

Lebanidze V.T., Tevdoradze M.T. and Kapanadze M.M.

Georgian Educational University

The organization of IT-infrastructure for small business and collaborate work of the employees is discussed.  For this goal, Microsoft software products are considered and the appropriate solutions for resolving the corresponding tasks with minimum expenses are offered.  Besides, the organization of the system providing electronic document turnover  in  small business is discussed.

Keywords: IT-infrastructure, small business, electron documentation, minimum expenses.

 

DETERMINATION OF KINEMATIC CONTROL FUNCTIONS FOR SPATIAL ROTATIONS

(SPINOR REPRESENTATION APPROACH)

 

Milnikov A.A. and Rodonaia V.I.

 

Georgian Technical University

 

Abstract. In the paper the expressions for solving the problem of determination of kinematic control functions were derived. The results are based on the assumption that instant  states (initial and final) of the rotational transformation of  a 3-dimensional point  are given.  To realize the complete process of spatial control one needs to define all intermediate (continuous) states of the transformation. The time-dependent (kinematic) representation of the rotation is formulated in terms of time functions of Euler angles. The offered theory allows reducing the problem of spatial movement control to the one-dimensional case.

Keywords: spatial rotation, orthogonal transformation, kinematics, control function, Euler angles.

 

SUMMARY

INVESTIGATION OF THE EFFECT OF THE ERRORS OF MEASUREMENT DEVICES ON THE PROPERTY OF ORTOGONALITY OF THE THIRD-ORDER ROTATABLE DESIGNS FOR THREE VARIABLES

Beraia N.O. and Gvaramia E.G.

Georgian Technikal University

The article deals with the effect of various errors of measurement devices on the propertly of orthoganility of two from three composition rotatable designs of the third order for three variables obtained by combining the D3D4 and D3D6  rotatable designs of the second order. The investigation was performed for the most characteristic errors of measurement devices at different sizes of the square. The simulation of the effect of measurement device errors on the abovementioned property of designs was performed by superimposing the random numbers distributed by the normal law on the design coordinates. In the result, the experimenter can adequately select the accuracy of measurement devices, used for establishment of factor levels, depending on the desired accuracy of the estimate of the factors of the regression equation.

Keywords: experimental design, third-order rotatable design, ortogonality.

 

SUMMARY

INVESTIGATION OF THE EFFECT OF EXPERIMENTAL ERRORS ON THE PROPERTIES OF
G- AND Q-OPTIMALITY OF THREE-COMPONENT SIMPLEX DESIGNS OF THE SECOND ORDER

Beraia N.O. and Bochoridze E.V.

Georgian Technical University

The article deals with the effect of the errors of measurement device on the properties of G- and Q-optimality of Sheffe’s three-component simplex-grid designs of the second order. The investigation was performed for different error ranges, characteristic of measurement devices in the research field limited by the simplex. At a quite small scanning pitch, we obtained the data array by which it was possible to judge objectively of the analyzed properties of the designs under study. For each criterion, maximum and minimum values, and mean arithmetic and root-mean-square deviations characterizing the dispersion were obtained. The degree of degradation of the properties of the second-order designs under study at increasing errors was analyzed.

Keywords: experimental design, simplex-grid design, G-optimality, Q-optimality.

 

DIFFRACTION OF THE H-POLARIZED OBLIQUELY INCIDENT PLANE WAVE BY THE PERIODIC DIELECTRIC CORRUGATED STRUCTURE WITH RECTANGULAR RIDGES PLACED ON A METALLIC PLATE

 

Gdzelishvili S.C.

 

Georgian Technical University

 

Abstract. An analytical method for the analysis of the diffraction of the plane electromagnetic wave by the periodic corrugated dielectric structure with rectangular ridges placed on a perfectly conducting plate is presented. The case of the obliquely incident plane wave with a magnetic vector being parallel to the ridges of the structure (H-polarization) is considered. On the basis of the rigorous formulation of the electrodynamic boundary-value problem, infinite sets of linear algebraic equations (ISLAE) of the first and the second kind were derived to define the complex amplitudes of spatial harmonics of the field scattered by the periodic structure. Each of the ISLAEs was solved by the truncation method.

Keywords: biorthogonality, eigenfunctions, infinite set of linear algebraic equations, light beam divider, periodic corrugated dielectric structure, plane wave diffraction.

SUMMARY

Ch. SHERRINGTON’S PRINCIPLE OF THE FINAL COMMON PATH IN ROBOTICS

Machavariani G.A. and  Bekauri N.I.

V. Chavchanidze Institute of Cybernetics, Georgian Technical University

This article is the further development of the compositional concept of walking robots. According to this concept, the locomotion process controlled by the lower control level of the robot can be represented as the result of collective operation of autonomous automated control systems (controllers) considered as simple automations or the agents of a multiagent system. The objective of this work is  to draw the parallels between the hexapod robot model designed on the basis of the compositional concept and the models of movements control in living organisms and to expand the range of facts justifying the similarity of principles of functioning of artificial and natural intelligence systems.

Keywords: hexapod robot, compositional concept, movement control, Sherrington’s principle.

 

SUMMARY

STATISTICAL ESTIMATION AND ANALYSIS OF THE RESULTS OF THE EXPERIMENTAL INVESTIGATION METHOD OF TESTING OPERATION

Grdzelidze M.G.

Akaki Tsereteli State University, Kutaisi

The most important indices of the footwear quality are its convenience and durability in wearing. This is especially important for consumers with deformed feet. In the result of experimental investigation of testing wearing, the pedograms of teenagers were studied with the aim of analyzing the percentage of distribution of the load on the plantar part of the foot. The load distribution on the foot in dynamics and statics was calculated. This index deternines the topography of heel wear and hence the quality and convineince of footwear.

Keywords: footwear, orthopedic elements, foot, statistical analysis.

 

MODELING OF THE REMOTE CONTROL SYSTEM

FOR PHYSICAL STABILITY OF  THE HYDRAULIC FILL DAM

 

Aliyev V.A. and Gafarov E.K.

 

Institute of Physics, National Academy of Sciences, Azerbaijan

National Aerospace Agency, Azerbaijan

 

Abstract. The paper deals with the results of modeling of the remote control system of physical stability of the hydraulic fill dam by the example of the Mingechevir Dam on the Kura River. This dam is the highest hydraulic fill dam in Europe. The offered model contains aero-geodetic benchmarks mounted in the body of the dam, a floating station for water level measurements in the reservoir and water level (water discharge) recorders located on the Rivers for Kura, Iori and Alazani. The remote system is equipped with solar cells and digital measurement sensors with GSM/GPS connection with the Dam Management Office.

Keywords: hydraulic fill dam, physical stability, reservoir, remote control, aero-geodetic benchmarks, water level recorder, GSM.

 

 

SUMMARY

PRISONERS‘ INDIVIDUAL SAFETY CONTROL SYSTEM

Odisharia K.M., Kaishauri T.V. and Tsiklauri N.L.

Georgian Technical University

Prisoners′  individual safety control system is presented. The general algorithm of operation of the monitoring system of prisoners location is presented. The complete control of prisoners′ rights, duties and illegal actions will be accomplished by introducing the modern advanced informaional technologies.

Keywords: prisoner′s duties, prisoner′s identification, the subsystem of control of prisoner′s duties, general algorithm, radio-frequency identification.

 

 

ENERGY-INFORMATION STOCHASTICITY OF BIO-ENERGY

 

Kadagishvili L.G.

 

V. Chavchanidze Institute of Cybernetics, Technical University Georgia

Georgian Engineering Academy

 

Abstract. The article deals with the intra- and extrasensory stochastic cases of the information influence of bio-energy. In the experiments the necessity for the compatibility between the patient and the bio-corrector and torsion stochastic interactions of the fields of both persons were studied. It was inferred that the methodology of treatment of the patient with the bio-field should be based on the precise diagnosis to establish a thorough contact between the patient and the bio-corrector.

Keywords: bio-energy, information, stochasticity, bio-corrector.

 

FUNCTIONAL REPRESENTATION OF THE STREAM OF CONSCIOUSNESS

 

Kadagishvili L.G.

 

V. Chavchanidze Institute of Cybernetics, Georgian Technical University

 

 

Abstract. The article deals with the functional representation of the stream of consciousness studied experimentally. The stream of consciousness  is the exposure of the process of thinking in time. The development of the problem is given during both the anatomic and phenomenological studies of perception. The spectrum of characteristics has the following features: consciousness is a dynamic process, it is irrational, normalized, wave-like, permanent, quantum, entropic and rigid. The study of psychics will reveal more functional interrelations, which are being studied.

Keywords: stream of consciousness,   functional representation, perception, thinking.

 

SUMMARY

ON THE MULTIDIMENSIONAL MODEL OF THE SPACE-TIME AND THE RELATIVITY OF THE NUMBER

Sepiashvili D.P.

Georgian Engineering Academy

The time-spatial structure of the Universe is multidimensional. Real particles in vacuum exist in the form of “twins” – virtual realities hidden in the space-time of high dimensionality. Hence, the number of objects is relative, and our notion of the number is too simple and does not correspond to the reality. The total energy of the multidimensional particle is higher than that observed in the real space-time. It is equal to where E is the energy of the real particle; i is  the number of virtual twins of the particle. The higher is the number of virtual twins of the particle, the lower is its actual energy, and the higher is its dimensionality. The twins can interact with one another and with real objects. The first is manifested in the dark energy, the latter – in the form of the fields of different forces of interaction (electric, gravitational etc.). The cause of accelerated expansion of the Universe should be sought for in the multidimentional structure of the Metauniverse and in double (at least) direction of its development (double direction of time). The repeated genesis of the Universe from vacuum in the terminal phase cannot be ruled out.

Keywords: multidimensional Universe, twin particles, virtual reality, accelerated expansion of the Universe, Einsten-Rosen-Podolski paradox.

 

 

SUMMARY

ON THE MULTIDIMENSIONAL MODEL OF THE SPACE-TIME AND THE RELATIVITY OF THE NUMBER

Sepiashvili D.P.

LLC “Oncological Clinic”

Georgian Engineering Academy

The time-spatial structure of the Universe is multidimensional. Real particles in vacuum exist in the form of duplicates virtual realities hidden in the space-time of high dimensionality. Hence, the number of objects is relative, and our notion of the number is too simple and does not correspond to the reality. The total energy of the multidimensional particle is higher than that observed in the real space-time. It is equal to where E is the energy of realization of the real particle; i is  the number of virtual twins of the particle. The higher is the number of virtual twins of the particle, the lower is its actual energy, and the higher is its dimensionality. The twins can interact with one another and with real objects. The first is manifested in the dark energy, the latter – in the form of the fields of different forces of interaction (electric, gravitational etc.). The cause of accelerated expansion of the Universe should be sought for in the multidimentional structure of the Metauniverse and in double (at least) direction of its development (double direction of time). The repeated genesis of the Universe from vacuum in the terminal phase cannot be ruled out.

Keywords: multidimensional Universe, duplicate particles, virtual reality, accelerated expansion of the Universe, Einsten-Rosen-Podolski paradox.

 

 

SUMMARY

TWO ENDS OF THE EVOLUTION

Sepiashvili D.P.

LLC “Oncological Clinic”

At the dawn of the advent of life, large space bodies of ten collided with the Earth, megavolcanoes were very active. The dust raised from  the surface of  the Earth reached  the  ionosphere, where  the magnetic field of the Earth could not screen  the dust from the action of cosmic rays (α,β, γ and UV radiation). Under  the actionof cosmic rays, probably crystallization and the reactions of abiogenic synthesis and polymerization of organic substances took place on the earth dust. The asymmetric effect  of cosmic rays on the primary earth dust promoted  its asymmetric crystallization and the advent of the phenomenon of kirriality. The advent of life is the process of ordering of the structure of prebiotic physical-chemical systems in respect to the conditions of changing phase states (phase transitions of the first- and the second-order), of the adaptation via adding complexity to the structure.

Keywords: advent of life, environmental catastrophes, pathology, primary dust of the Earth, ionosphere, cosmic rays.

 

Investigation of magnetic carbon nanopowder doped with iron atom clusters

 

Kutelia E.R., Rukhadze L.N., Maisuradze N.I., Kukava T.G., Tsurtsumia O.O., Eristavi B.G.,

Dzigrashvili T.A., Kuchalashvili G.V.  and Padgurskas J.A.

 

Republic Center for Structure Research, Georgian Technical University

Department of Mechanical Engineering, Lithuania University of Agriculture

 

Abstract.  A complex investigation of the morphology, sizes and  composition of carbon nanoparticles doped with iron atom clusters in the carbon nanopowders synthesized on the surface of iron plate (substrate) was performed using SEM, EDX and AES. It was shown that the magnetic carbon nanopowder, synthesized at 700OC by  the combination  of ethanol vapor  pyrolysis and chemical-vapor deposition (CVD) in the free-poured state, represents a nanocomposite, which is a mixture of carbon spherical nanoparticles (NP) with the average diameter of ~200nm and carbon nanotubes (NT) having the diameter of ≤200nm and the lengths of ~1µ. The carbon nanoparticles have a structure of core-shell type spheres with the core of pure iron atom clusters, while in carbon nanotubes the iron atom clusters are mainly concentrated at one end of  nanotubes, exactly at the tube channel inlet. The iron concentration in carbon nanopowder of such composition is equal to 2.1 at%.

Keywords: doped carbon nanopowder, nanoparticles, nanotubes, iron clusters, SEM, EDX, AES.

 

SUMMARY            

SUPERCRITICAL NANOSTRUCTURES PbSe / KCl

Pashaev A.M., Davarashvili O.I., Enukashvili M.I., Gulyaev R.G. and Zlomanov V.P.

National Aviation Academy of Azerbaijan, Baku

Iv. Javakhishvili Tbilisi State University

M.V. Lomonosov Moscow State University                               

We obtained and investigated supercritical nanostructures PbSe/KCl  for the first time. The range of realized elastic deformations in the layers with respect to single crystal PbSe and KCl substrate was 0.001-0.013, which is the most interesting for physical research. The level of deformation in the layers within a certain range of their changes could be increased by increasing the rate of growth of the layers. This effect is more noticeable if the disordered state is not frozen and the migration of dislocations slows down.

Keywords: nanostructure, critical thickness, elastic deformation, stress relaxation, layer growth rate, disordered state.

 

OPTICAL SWITCHING MECHANISM IN DOUBLE-INJECTION GaP DEVICES

 

Kvitsiani O.R., Laperashvili D.L., Laperashvili T. A.  and Imerlishvili I.I.

 

V. Chavchanidze Institute of Cybernetics, Georgian Technical University

 

Abstract: The results of the investigation of the mechanism of optical switching in GaP-based diodes with the                 S-type volt-current characteristic at 3000 C are discussed. The semiconductor optoelectronic switch was fabricated in a Light Emission Diode configuration. The samples used in the experiment were partially compensated n-type GaP. The theory of double injection of charge carriers in the semiconductor was used for description of the switching mechanism.

Keywords: optical switch, compensated semiconductor, double injection.

 

THE METHOD OF FABRICATION AND THE PROPERTIES OF GaAs SCHOTTKY DIODES

 

Kvitziani O.R., Laperashvili D.L., Laperashvili T.A. and Imerlishvili I.I.

 

V. Chavchanidze Institute of Cybernetics, Georgian Technical University 

 

Abstract. The results of investigation of the electrical and photoelectric properties of Schottky diodes based on                  n-type GaAs are presented. The samples were obtained by electroless and electrochemical deposition of different metals (Au, Ni, Pt, Pd, Fe, In, Ga, Al) on the semiconductor. In the experiments aqueous solutions of metal chlorides were used as electrolytes.

Keywords: Schottky diode, electrochemical deposition, barrier height, terahertz.

 

SUMMARY

SAFE BURIAL OF RADIOACTIVE WASTE

Begiashvili G.A., Gvatua N.Sh. and Gvatua Sh.Sh.

V. Chavchanidze Institute of Cybernetics,  Georgian Technical University

The article deals with a novel method of long-term storage of the radioactive waste (RW) of nuclear power stations in deep geological formations, for example, in exhausted mines/excavations. The essence of the method consists in insertion of up to 10 wt.% RW in to the cement mass, reinforced with rods and fiber made of basalt fibers 3-5 mm in length and  7-12μm in diameter, production of cement blocks and coating of their surfaces with paste on the basis of epoxy doped with basalt micro-dispersed powder and fiber.

Keywords: radioactive wastes, storage, basalt fiber.

 

Summary

Determination of the Percentage Content of Arsenic in the Wastes of the racha mining-chemical Plant

Chachava G.N., Gverdtsiteli M.I., Rusia M.Sh., Gurgenidze N.I. and Chachava G.G.

Iv. Javakhishvili Tbilisi State University

The percentage content of arsenic in the wastes (realgar, auripigment) of the Racha Mining-Chemical Plant was studied. It was determined that arsenic content varied in the range of 1.80-2.72%. The methods of production of useful products from the wastes were developed.

Keywords: arsenic, percentage content, industrial wastes, mining-chemical production.

Summary

Mathematical-Chemical  Investigation of Hg(I) Halides within the Scope of Pseudo--matrices Method

Chachava  G. N., Bedinashvili M.V., Lobdjanidze B.G. and Gverdtsiteli M.I.

Iv. Javakhishvili Tbilisi State University

Hg(I) halides were studied within the scope of the -matrices method.  Three correlation equations were derived and investigated. The calculations showed that, according Japhe’s criterion, the correlations  were good.

Keywords: Hg(I) halides, -matrices method, correlation equations.

 

Mathematical-chemical Investigation of methacrylic acid

Karchkhadze M.G. and  Gverdtsiteli M.I.

Iv. Javakhishvili Tbilisi State University

 

Abstract. The esters of methacrylic acid were studied within the scope of the quasi-ANB-matrices method. Two correlation equations of the type „structure-properties” were  derived and investigated. The calculation results  showed that, according to Jaffe’s criterium,  the correlations were good.

Keywords: esters, methacrylic acid,  quasi-ANB-matrices method, correlation equations.

 

 

Summary

MathematicAL-chemical study of some redox  reactions with participation of [Co(NH3)5Hal]2+

Chachava G.N.,  Rusia M.Sh. and Gverdtsiteli M.I.

Iv. Javakhishvili Tbilisi State University

Two correlation equations of the ,,structure-properties” type were derived and investigated within the scope of the pseudo-ANB-matrices method. The calculation showed that, in accordance with Japhe’s criterion, the  correlation was good.

Keywords: redox reactions, pseudo-ANB-matrix, correlation equations.

 

SUMMARY

MATHEMATICAL-CHEMICAL INVESTIGATION OF LINEARLY CONDENSED HYDROCARBONS CONTAINING THE BENZENE CYCLE

Tsivtsivadze T.I., Tsetsadze N.R. and Gverdtsiteli M.I.

Iv. Javakhishvili Tbilisi State University

Linearly condesed hydrocarbons containing the benzene cycle were studied within the scope of the block-matrices method. Two correlation equations were derived and investigated. The calculations showed that the correlation was good.

Keywords: hydrocarbons, benzene cycle, block-matrices method.

 

SUMMARY

MATHEMATICAL-CHEMICAL INVESTIGATION OF THE REACTIONS OF RADICAL HALOGENATION OF METHANE

Tsivtsivadze T.I., Tsetsadze N.R. and Gverdtsiteli M.I.

Georgian Technical University

Iv. Javakhishvili Tbilisi State University

Mathematical-chemical investigation of the reactions of radical halogenation of methane was carried out within the scope of pseudo-ANB-matrices method, the modernized method of Shennon’s information entropy and topological indecies method.

Keywords: radical halogenation, methane, Shennon’s information entropy.

 

NOVEL 24-MEMBERED MACROCYCLIC POLYAZOMETHINES IMMOBILIZED ON SILICA GEL

Topuria Kh.D.,  Obolashvili N.Z., Karkusashvili T.G. and   Geliashvili Z.E.

 

Georgian Technical University 

Abstract. With the aim of synthesizing the fluorescent pigments, the immobilization of macrocyclic polyazomethines on the surface of silica gel preliminarily activated with cyanuric chloride was performed. It was established that the immobilization did not cause fluorescence quenching.

Keywords: polyazomethine, fluorescent pigments, immobilization, silica gel.

 

 

SUMMARY

THE INFLUENCE OF MACERATION AND ENZYMIC PREPARATIONS ON THE AROMATIC COMPOUNDS IN RED WINES

Mamaiashvili Kh.V., Khomasuridze M.B. and Kalatozishvili E.I.

Georgian Technical University

For production of aromatic high-quality wine there was performed pre-fermentation maceration with enzymic preparations of pectolitic and cellulose activity: Lafaze He Grand Cru, Laffort; Panzym Clair Rapide G-Begerow; Extrazim-Institute oenologique de champagne. Along with the experimental samples, the control samples were prepared without addition of any preparation.  According to the wine type, pre-fermentation maceration was conducted at 12-140C, alcoholic fermentation of the Saperavi must was carried out at 20-220C, whereas the Tavkveri must was fermented at 25-300C.  The aromatic compounds were determined by using the gas-liquid chromatograph Chrom 5. In the experiment, it was revealed that the use of enzymic preparations increased the content of aromatic compounds. It is essential to control the temperature during maceration and fermentation. The optimal temperature for maceration is 12-140C, and the fermentation temperature must not exceed 220C.  Based on the obtained results, we recommend to use enzymic preparation Lafaze He Grand Cru for production of high-quality wine with rich fruit and flower aroma from grape cultivar Tavkveri and preparation Extrazim – for production of wine from grape cultivar Saperavi.

Keywords: red wine, enzymic preparations, fermentation, maceration.

 

SUMMARY

ON THE IMPROVEMENT OF DRIVER’S HEALTH AND CAPACITY FOR WORK

Chabukiani R.R., Purtskhvanidze G.N. and Kharatishvili A.G.

Akaki Tsereteli State University, Kutaisi

In the article, the adverse effect of automobile transport on driver’s health is discussed. In particular, it is shown that this transport provokes the desease of our century-hypodynamia. Nowadays, when the concentration of thinking, the psychic state, the capacity for work and the health in general are the focus of attention, the provision of vehicle driver with antihypodynamia seats is of key importance.

Keywords: automobile, driver’s seat, driver’s health, capacity for work.

 

SUMMARY

THE FOOT AS A BIOMECHANICAL CENTER OF THE MUSCULOSKELETAL SYSTEM

Grdzelidze M.G.

Akaki Tsereteli State University, Kutaisi

The paper deals with the dstribution of sense receptors on the foot and the importance of adequacy of the relief of the inner supporting part of shoes with plantar part of the foot for designing of rational footwear.

Keywords: footwear, foot, sense receptors.