ON THE DIFFRACTION THEORY OF OBLIQUE PLANE ELECTROMAGNETIC WAVES ON A PERIODIC LATTICE FORMED OF CIRCULAR DIELECTRIC CYLINDERS

Dekanosidze Sh.V.

Georgian Technical University

The problem of diffraction of oblique plane electromagnetic waves on a periodic lattice formed of infinitely long dielectric cylinders is considered. It is shown that in this case TE and TM waves simultaneously arise in a scattered wave. For a multipole spectrum, a system of infinite linear algebraic equations of the second order was derived. The interaction between the diffraction spectrum and the multipole spectrum indices was determined.

Keywords: oblique plane electromagnetic wave, diffraction, periodic lattice, circular dielectric cylinder.

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THE STRESS - STRAIN STATE OF MULTI-LAYER ANIZOTROPIC COATINGS WITH CIRCULAR AND ELLIPTIC HOLES

Bulia N.P. and Goksadze L.I.

Georgian Technical University

A sloping multilayer anizotropic coating, which is rectangular in a plan, and which has one circular hole and one elliptic hole, is considered. Its solution with account of the following compensating loads is given: distributed normal forces, distributed shearing forces, distributed lateral forces and bending moments.

Keywords: anizotropic coating, stress-strain state, solution.

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INVESTIGATION OF A RATHER SOFT THIN INCLUSION

Buksianidze A.A.

Georgian Technical University

The results of investigation of a rather soft thin inclusion, the singular problem of which is reduced to a boundary problem are presented. It is shown that external loading components cause significant distirbance of an external field (if there exists a soft thin inclusion), as, in this case, the effect of other components is insignificant.

Keywords: strain, stress, soft thin inclusion.

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DISPLACEMENTS, STRAINS AND STRESSES OF A LAYERED SLOPING SHELL

Kvaratskhelia A.V.

Georgian Technical University

An attempt to construct a geometric model of a layered shell and to determine the relationship between its stress and strain has been made. The model is linear and allows to derive the equations of motion and neutral equilibrium.

Keywords: layered sloping shell, strain, dicplacement, stress.

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ПРОГНОЗНЫЙ МЕТОД РАСЧЕТА СТАТИЧЕСКОЙ ПРОЧНОСТИ НАПОРНЫХ ТРУБЧАТЫХ КОНСТРУКЦИЙ ГИДРОУЗЛОВ

Данелия Р.В.

Грузинский государственный аграрный университет

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THE STRUCTURE AND THE PROBLEMS OF DINAMIC MODELING OF A MULTI-MEMBER VIBRATION – ISOLATING PLATFORM

Diasamidze A.A., Mchedlishvili T.Ph., Sulamanidze N.D. and Sulamanidze D.N.

Georgian Technical University

A new design of a vibration – isolating platform for protecting an operator from total vibration is proposed. The platform has been tested on the vessels of Georgian Shipping Company. For optimizing the platform parameters, the solution for dynamic modeling of the system, which can be used for constructing dynamic and mathematical models of linear vibrational motion in a horizontal plane, is suggested.

Keywords: vibration, vibration-isolating platform, model design.

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SOME ASPECTS OF DESIGNING AND PRODUCTION TECHNOLOGY OF MULTICOLOUR LIGHT-EMITTING DEVICES AND STRUCTURES

Kekelidze N.P., Tserelov A.A., Mgebrishvili N.N., Tserelov R.A., Ermolov A.G., Charmakadze R.A., Kakushadze D.G., Tkeshelashvili Z.Sh. and Ogava T.

I. Javakhishvili Tbilisi State University

Gakushuin University, Tokyo, Japan

Problems of designing and production technology of multicolour light-emitting devices and structures are considered. The aim is achieved by reflecting and merging of the three main colours. A light-emitting structure based on GaN is considered.

Keywords: light-emitting devices, designing, production technology, GaN.

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AN IMPROVED MODEL OF FLOW CHIP FORMATION AT METAL CUTTING

Abuladze N.G.

Georgian Technical University

An improved model of formation of the flow chip with one shear plane is offered. The model allows to determine, with sufficient approximation, the effective contact length of the chip with a a front blade side: c_e= ka ^0,1 k_eў = a ka ^0,1 [ka (1-tg g )+sec g ] and the correlation between the angles of shear direction Ф and friction h and rake angle g :

where a is the uncut chip thickness; ka is the chip thickening coefficient;

Keywords: metal cutting, chip formation, improved model.

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REALIZATION OF A BANDPASS STRIP-LINE POLYNOMIAL FILTER

Japaridze V.P. and Kharabadze G.M.

Georgian Technical University

The problem of realization of a bandpass strip-line microwave filter of a new type, which is formed of strip line sections curved in a circle, has been solved. The equations which allow to perform the synthesis of the mentioned filter by the specified damping-to-frequency ratio have been derived..

Keywords: bandpass strip-line microwave filter, synthesis, strip line sections.

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SYNTHESIS OF BANDPASS MICROWAVE FILTERS CONTAINING BOUND STRIP LINE SECTIONS CURVED IN A CIRCLE

Kharabadze G.M.

Georgian Technical University

The problem of synthesis of bandpass strip-line microwave filters containing bound strip line sections curved in a circle has been solved. It is shown that the synthesis of such filters is to be reduced to realization of a bandpass strip-line filter which does not contain any bound strip line sections, if only the wave resistance of bound strip lines at in-phase excitation Zoe and antiphase excitation Zoo is determined, and, through it, the equivalent wave resistance of the filter strip line without bonds is determined.

 Keywords: bandpass strip-line microwave filter, synthesis, strip line sections.

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GENERAL METHODS FOR SOLVING THE PROBLEM OF DESIGNING OPTIMAL TECHNICAL COMPONENTS AND SYSTEMS FOR TRANSPORTATION OF FRUIT AND VEGETABLES

Kekenadze D.G.

Georgian Technical University

A system and a model for optimizing constructive dimensions and operation modes and choosing optimal versions of transportation systems for vegetables, citruses and other Southern and subtropical cultures were developed. A structure of a complex technical system for delivering the fruit-and-vegetable raw stuff for processing was designed. Mathematical description of the offered system is given; general methods for solving the problem of optimizing the components and statistic processing of investigation results are substantiated.

Keywords: transportation of fruit and vegetables, mathematical description, system, model.

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A SYSTEM MODEL FOR SOLVING THE PROBLEM OF DESIGNING OPTIMAL TECHNOLOGICAL FACILITIES AND SYSTEMS FOR TRANSPORTATION OF FRUIT AND VEGETABLES

Kekenadze D.G.

Georgian Technical University

A system model for solving the problem of designing optimal technological facilities and sytems for transportation of fruit and vegetables was employed. Optimal dimensions and indices that characterize vehicle vibration were determined. A rational technological system was chosen.

Keywords: transportation of fruit and vegetables, technological facilities, system, model.

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ПОСТРОЕНИЕ СТРУКТУРЫ И МАТЕМАТИЧЕСКОЕ ОПИСАНИЕ СИСТЕМЫ ТРАНСПОРТИРОВАНИЯ ОВОЩЕЙ И ПЛОДОВ НА ПЕРЕРАБОТКУ

Кекенадзе Д.Г.

Грузинский технический университет

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INVESTIGATION OF THE TWISTED TEA LEAVES MASS MOTION RATE ON A VIBRATING SURFACE

Megrelidze T.I.

Georgian Technical University

Basing on differential equations, the equation for determining the average rate of twisted tea leaves mass motion on a vibrating surface has been derived. Experimental results show that the mentioned rate depends on a particle size and a vibration type.

Keywords: tea technology, calculation equation, mass motion rate.

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INVESTIGATION OF THE TWISTED TEA LEAVES DRYING RATE IN A VIBROAIRBOILING LAYER

Megrelidze T.I.

Georgian Technical University

The results of experimental investigation of the twisted tea leaves drying rate in a vibroairboiling layer are presented. The dependence of the mentioned rate on the amplitude magnitude under biharmonic vibrations of the working device has been studied. The empiric relationship is presented.

Keywords: tea technology, vibroairboiling layer, biharmonic vibrations.

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A MATHEMATICAL MODEL OF DYNAMIC ACTIVITY OF A SORBENT THAT PURIFIES WATER OF AMMONIUM IONS

Khmiadashvili I.A., Tsverava M.K., Shengelia E.G., Gvasalia L.I. and Tsintsadze G.V.

Georgian Technical University

A mathematical model for determining the dynamic activity of the HOKU tailings of coal cleaning with the use of the method of approximate analytical represantation of the function of several variables is presented. The material under investigation is a sorbent that purifies water of ammonium ions.

Keywords: water purification, sorbent, ammonium, dynamic activity, mathematical model.

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THE EFFECT OF CARBON OF A DISORDERED FORM ON DIAMOND FORMATION KINETICS

Loladze N.T.

Georgian Technical University

The effect of carbon of a disordered form, i.e. carbon black, added to the graphite-metal reaction mixture on the kinetics of diamond microcrystal synthesis was investigated. It was established that the nucleation rate abruptly reduced with the increase in the amorphous carbon concentration in a crystallization medium. It is suggested that the diamond nucleation process probably proceeds according to a colloid mechanism.

Keywords: diamond formation, kinetics, amorphous carbon.

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VARIATION OF PERMANENT SETS OF CONCRETE STONE UNDER TENSION IN TIME

Chogovadze J.V.

Georgian Technical University

It is shown that the boundary of permanent set emergence decreases to a certain limit with the growth of tensile load time-keeping. Then the emergence of new cracks ceases, though the extension of existing ones takes place.

Keywords: concrete stone, permanent set, tension.

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SINTHESIS AND IR SPECTRA OF MONOTHIOARSENATES OF 3d-METALS AMMONIATES

Khelashvili G.K., Gigauri R.D. and Indzia M.A.

I. Javakhishvili Tbilisi State University

The interaction of sodium monothioarsenate with ammoniate complexes of cobalt (III) and copper (II) is researched. It is shown that the products of special purpose are formed by double decomposition. By interaction of monothioarsenates of nicel (II) and zinc (II) with NH₄OH, the monothioarsenates of ammoniates of the mentioned metals were obtained. Their composition and constitution were studied by methods of chemical analysis and IR spectroscopy.

Keywords: monothioarsenate, d-metals.

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ON THE POSSIBILITY OF USING POTATO CELLULAR JUICE AS A FOOD FOAMER

Berezhiani L.B., Abzianidze K.Sh. and Tsintsadze G.V.

Georgian Technical University

A new food foamer, namely potato cellular juice, which can substitute the egg protein in producing whisked confectionery products (pastila, souffle, cream, etc.), is offered. The potato cellular juice is to be produced of the waste of potato starch factories.

Keywords: foamer, confectionery products, potato cellular juice.

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ON THE PROBLEM OF FOAMER SUBSTITUTION FOR KHALVA PRODUCTION

Abzianidze K.Sh., Berezhiani L.B. and Tsintsadze G.V.

Georgian Technical University

The results of investigation of a foamer produced of tea seeds, which is to substitute a scarce soap root in khalva production, are presented.

Keywords: foamer, khalva, tea seeds.

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ИССЛЕДОВАНИЯ ХИМИЧЕСКОГО СОСТАВА БУКЕТА ГРУЗИНСКОГО ''ВИСКИ'' (I)

Чекуришвили Г.О., Бежуашвили М.Г.

НИИ садоводства, виноградарства и виноделия

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ИССЛЕДОВАНИЯ ХИМИЧЕСКОГО СОСТАВА БУКЕТА ГРУЗИНСКОГО ''ВИСКИ'' (II)

Чекуришвили Г.О., Бежуашвили М.Г.

НИИ садоводства, виноградарства и виноделия

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SOME RESULTS OF THE AGRARIAN REFORM IN GEORGIA

Vashakidze O.Sh., Jikia O.B. and Basilaia K.D.

Research Institute of Economy and Social Problems

To overcome an economic crisis in the country, it is essential to effect a prompt and gradual agrarian reform. Unfortunately, the reform in the agroindustrial complex has not been carried out in accordance with the programme envisaged. Because of that, the agrarian crisis has aggravated, the scale of production has diminished, the economy has declined and the living standard has decreased.In the presented work some serious errors commited when carrying out the reform are shown up; positive results of the reform are noted; concrete ways and directions for improving the agrarian reform course are projected.

Keywords: agrarian reform, agroindustrial complex.

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FROM ENERGY TO INFORMATION, ENERGOINFORMATION AND INFORMATIOLOGY

Khvedelidze M.A.

Institute of Cybernetics

Georgian Engineering Academy

Development of the notion of fundamental features of matter from the notion about work and energy, which the primacy was later assigned to, is briefly described. However, philosophical "energetism" proved to be unconstructive. Essential necessity in prediction of events created the theories of probability and information that were widely applied for quantitative measurement of information. Later the energoinformational duality, that significantly expanded the opportunity of learning to apprehend the laws of nature, was realized. And, at last, recently the notion about the primacy of information and the secondary nature of matter and energy has arised. That notion has been established by a novel field of science called informatiology that unites the opposite philosophical categories into a unified category of material and ideal dualism.

Keywords: information, energoinformation, informatiology, primacy, dualism.

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INNOVATION MANAGEMENT AT GEORGIAN MACHINE-BUILDING PLANTS

Baratashvili T. I.

Research Institute of Economy and Social Problems

A method for analyzing and solving the specific situations is offered. The method was developed basing on the analysis and the decisions developed for 10 specific production situations at machine-building plants. The developed method complies with the requirements of innovation management and can be employed for solving the problems of machine building development.

Keywords: innovation management, machine building, solution of specific situations.

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ИССЛЕДОВАНИЕ ГАЛОГЕНИДОВ КОБАЛЬТА (II) В РАМКАХ ПНС-МАТРИЧЕСКОГО МЕТОДА

Гвердцители М.И., Чачава Г.Г., Метревели Дж. П.

Тбилисский государственный университет им. И. Джавахишвили

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INVESTIGATION OF THE THERMOMETRIC CONDUCTIVITY COEFFICIENT OF TWISTED TEA LEAVES DEPENDING ON THEIR HUMIDITY AND TEMPERATURE

Megrelidze T.I.

Georgian Technical University

The results of investigation of the termometric conductivity coefficient of twisted tea leaves depending on their humidity and temperature are considered The calculation equation is presented.

Keywords: tea technology, thermometric conductivity, calculation equation.

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TECHNOLOGICAL INNOVATION AND ITS SOCIAL ASPECTS

Baratashvili T.I.

Research Institute of Economy and Social Problems

Technological changes as the results of the uniform social and economic innovation process are considered in a social aspect. A quantitative method for quality estimation, which allows both to estimate planned technological changes and to employ practical results, is offered.

Keywords: technological innovation, social aspect, estimation method.

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