SUMMARY
ON ONE METHOD OF MULTIPLE CORRECTION
OF DATABASES IN PATTERN RECOGNITION OBJECTIVES
Tkemaladze N.T., Jikhvashvili V.N., Kuridze M.V. and Mamulashvili G.G.
V. Chavchanidze Institute of Cybernetics of Georgian Technical University
A new method of multiple correction
of data bases on the basis of object recognition results is suggested. The correction of
databases is one of important objectives of the system of pattern recognition
with learning (SPRL) we elaborated. Therefore, the brief information on the
SPRL is given. The object recognition results were significantly improved after
including the above-mentioned method in the SPRL
Keywords: multiple
correction, pattern recognition, database, measure, feature.
SUMMARY
SEARCH OF OBJECTS IN THE AREA
Nachkebia M.D.
Niko Muskhelishvili
Institute of Computational Mathematics of the Georgian Technical University
The paper deals with the
problems of search in the area in different situations of search depending on the
character of information about locations of the object of search, the structure
and location of search means, technical parameters of both search forces, and the
required object. In the specific case, the model can be applied to the problems
of search of naval underwater objects
Keywords: search
situation, search resource, search space, probability of detection, optimum control of the resource.
ON THE ORIGIN OF A STIMULATED DOMAIN-ACOUSTIC ECHO
POSSESSING THE LONG-TERM MEMORY IN MAGNETITE POWDERS
Mamniashvili G.I., Gegechkori
T.O., Gavasheli T.A., Sharimanov
Yu.G., Gventsadze D.I.,
Daraselia D.M. and Japaridze
D.L.
E. Andronikashvili Institute
of Physics,
Iv. Javakhishvili Tbilisi
State University
Abstract. The
stimulated domain-acoustic echo (DAE), possessing the long-term acoustic memory,
and magnetoacoustic responses were inductively
excited in magnetite using
a pulsed NMR technique with recording inductivly
the signals and studing their properties. The
comparison of the DAE intensity and magnetization dependence on the outer magnetic
field showed that the long-term memory of DAE is caused by the irreversible
changes of magnetization in the monodomain grains of
magnetite powder due to the magnetostriction with the interaction
of the acoustic wave generated by the first RF pulse with the magnetic field of
the second RF pulse.
Keywords:
stimulated domain-acoustic echo, long-term memory, magnetite powder, magnetoacoustic response, pulsed NMR.
INVESTIGATION
OF THE POSSIBILITY OF CHANGING THE ABSORPTION SPECTRA OF PHOTOCATALYTIC TiO2
NANOPOWDERS
Nadareishvili M.M., Gegechkori T.O., Mamniashvili G.I., Zedginidze
T.I., Petriashvili T.G., Tsakadze
S.J. and Ramsden J.J.
E.Andronikashvili Institute of Physics at Tbilisi
State University
University of Buckingham, UK
Abstract.
The
possibilities for changing the absorption spectra of the anatase
modification of the photocatalytic TiO2
powder were studied with the aim to use more efficiently the energy of UV solar
radiation for photocatalysis and to involve the
visible light energy into this process for enhancing the efficiency of the photocatalytic reaction. It was found that the deposition
of Ni-B clusters on the TiO2 powder by the unique technology
developed by the authors increases significantly the absorption of energy in
the UV region. It was also revealed that, after deposition of the Ni-B clusters
on the TiO2 nanopowder, in the result of
heat treatment in vacuum, the absorption spectra of the TiO2 nanopowder shifted to longer wavelength, and the absorption
in the visible part of light increased. From the experiments carried out, it
follows that the absorption in the visible part of light can be increased as
well by selecting the sizes of nanopowder particles
coated with Ni-B clusters. The investigations performed showed that it is
possible to enhance significantly the visible light absorption and the
efficiency of the catalytic reaction.
Keywords: photocatalisator, titanium
dioxide, absorption spectrum, hydrogen production.
FUNCTIONAL
DEPENDENCE OF THE PSYCHIC PHENOMENA
Kadagishvili L.G.
V.V. Chavchanidze Institute of Cybernetics, Georgian Technical
University
Georgian
Engineering Academy
Abstract. The paper
deals with the psychics as a dynamic process and the consciousness as a Gestalt
unity. The principle of unity is a relative process in psychology like the
theory of relativity is in physics. There is no fixation between the conscious,
subconscious and unconscious expositions of information, but they complement
each other and are transferred from one phenomenon into other in a normalized
manner, like there is no fixed time or space. Our studies are based on multiple
experiments. This means that the casual factors, which we cannot control, seem
to filter gradually according to the law of so-called big numbers, and finally
the relative frequencies (of the exposition of elements) can be determined.
Processing the information in this manner, we can talk about not only the
conscious portion of the information, but also the quantitatively exposed
subconscious and unconscious psychic parameters.
Keywords: psychic
phenomena, functional dependence, consciousness, subconsciousness.
TEMPERATURE
AND AMPLITUDE DEPENDENCE OF THE INTERNAL FRICTION AND SHEAR MODULUS FOR 9%CR
FERRITIC STEEL P92 OVER THE TEMPERATURE RANGE 25-750OC
Kutelia E.R., Darsavelidze G.Sh., Kukava T.G., Dzigrashvili T.A., Kurashvili I.R. and
Francisco J. Perez Trujillo
Republican Center of Structural Research, Georgian Technical University
Universidad Complutense
de Madrid, Spain
Abstract: Comparative
studies of relaxation processes and mechanical properties of the samples of ferritic steel P92 in different states were conducted using
the temperature- and amplitude dependence of the internal friction and shear
modulus. The measurements of Q-1(T,e)
and G~ƒ2(T,e) spectra
were carried out in vacuum (10-4torr) using a relaxometer with the reversed torsion pendulum, at
frequencies 1-5Hz, amplitudes of deformation 10-5-10-3
and the rate of heating«cooling 2-5°C/min over
the temperature range 25-750°C. The
samples were taken in three different states: in as-received condition, after
additional electric current tempering at 700°C under external mechanical tension,
and after annealing at 950°C/20min. The obtained results clearly demonstrate a considerable
increase (more than ~40%) in strength characteristics at elevated temperatures
(550¸700°C), achieved
by the additional electric current tempering under mechanical tension.
Keywords: ferritic steel,
internal friction, shear modulus, activation energy, relaxation processes,
electric current tempering.
SUMMARY
EXPERIMENTAL INVESTIGATION
OF DISPLACEMENTS AND THE TEMPERATURE
FIELD OF THE BEAM UNDER THERMOMECHANICAL LOADING
Baisarova G.G. and Kikvidze O.G.
Esenov Caspian State University of
Technology and Engineering , Aktau, Kazakhstan
Akaki Tsereteli
State University, Kutaisi
The paper deals with the experimental investigation of
the cantilevered beam. The beam has a rectangular cross-section. The schematic of
the experimental stand is given. The beam was loaded with a concentrated force
and a temperature field. In the experiment, the temperature of top and bottom
surfaces of the beam, as well as vertical and horizontal displacements
of the free end of the beam were measured. All measurements were carried out with
40-s intervals in two modes 1. The beam under the action of a
inhomogeneous temperature field, 2. The beam under the action
of a concentrated force and then under the action of the inhomogeneous
temperature field. The experimental graphs of displacements and
temperature are presented.
Keywords:
displacement, beam, temperature, experiment.
SUMMARY
HEATING OF THE
ITEMS OF SPOT WELDING BY HALF-WORKING ELECTRODES
Sulamanidze A.K. and Kakhishvili G.S.
Georgian Technical
University
A technique of heating of the items of spot welding
was elaborated. It is shown that the location of the welding spot determined by
the elaborated method depends on the thickness ratio of the items to be welded.
Keywords: spot
welding, half-working electrode, heating, welding spot.
SUMMARY
CHOICE OF THE QUALITY ASSESSMENT CRITERION OF ELECTRIC CONTACT WELDING OF STEEL
REINFORCEMENT OF CONCRETE ELEMENTS
Ospanova S.M., Zivzivadze L.B. and Shalamberidze M.Sh.
Akaki Tsereteli State University,
Kutaisi
The paper dwells on the development and substantiation
of the mechanical pattern for assessing the quality of the electric-contact
welding of steel reinforcement of concrete elements. It is shown that the share
test is highly sensitive to the changes in arc-welding current.
Keywords: electric
contact welding, quality assessment criterion, arc-welding current, steel
reinforcement.
SUMMARY
FORMATION OF SPHERICAL AND
ASPHERICAL SURFACES WITH FOR A CUTTER ACCOUNT PROFILE
Shalamberidze D.M., Zardiashvili
D.G. and Avaliani I.M.
LEPL
Institute “OPTICA”
The article deals with a mathematical model of shaping
of complex surfaces on CNC machines. In this model the cutter trajectory is
calculated taking into account the profile of the optical part and the cutter
profile of any complexity. This can significantly increase the accuracy of
shaping of the part surfaces.
Keywords: optical parts,
spherical surfaces, aspherical surfaces, cutter
profile.
SUMMARY
THE
INFLUENCE OF SOME PHYSICAL AND MECHANICAL PROPERTIES OF DIAMOND COMPOSITE
MATERIALS ON THE EFFICIENCY OF DIAMOND PROCESSING
Avalishvili Z.A., Tserodze Sh.P., Tserodze M.P., Dzidzishvili I.G. and Loladze N.T.
Georgian
Technical University
The paper presents the experimental
data showing the dependence of metal bonding materials properties on the
performance and tool life of diamond tools during reinforced concrete drilling.
A direct dependence of the hardness of bonding materials on the tools
workability is revealed.
Keywords: diamond composite materials, diamond
processing, hardness, efficiency.
SUMMARY
GREENHOUSE
GASES EMISSION REDUCTION POLICY AND THE MITIGATION MEASURES FOR IMPLEMENTATION
Arabidze G.O. and Pkhaladze I.E.
Georgian
Technical University
The Greenhouse Gases (GHG) inventory conducted in the
framework of the Third National Communication Plan revealed the Energy Sector
(including the transport sub-sector) as a leading GHG emitter sector in
Georgia. Therefore the main emphasis in planning the GHG emissions reduction
activities was made on the Energy Sector. Markal-Georgia
is an integrated energy system model of the national Markal
model which was used for the Energy Sector analysis. The baseline scenario
(BAU) was developed and analyzed using the Markal
Georgia model. The 15, 20 and 25% GHG reduction strategies were elaborated
against the BAU scenario. By 2030 an increase in energy consumption by 76.6% is expected, which
ultimately will result in the increase in CO2 emissions by 72.3%.
The emissions will reach 11 179 th.
tones. The expected increase in GHG emissions revealed
the importance of development of a low emissions strategy. Calculations showed
that the reduction of the emissions just by 15% by 2030 would result in the
reduction of energy carrier import by 13% and more, which ultimately will
strengthen the energy security of the country. In case of the 20% emission
reduction, the import will be reduced by 18% and, in case of the 25% reduction,
the import will be reduced by 23%. The development of the National Low
Emissions Strategy should concentrate on the projects and processes like local
capacity development, development of a local GHG inventory; adaptation issues,
GHG reduction, training of specialists, intense PR company etc.
Keywords: greenhouse
gases, emission, reduction, energy, stable development.
SUMMARY
GEOTHERMAL WATERS WITH REGARD
OF ENERGY EFFICIENCY POLICY
Vezirishvili-Nozadze K.O., Pantskhava
E.V., Jikhvadze M.J. and Mchedlidze
K.G.
Georgian
Technical University
The results of the efficient complex use of
geothermal waters are discussed. Analytical dependences for designing of complex geothermal
systems were obtained. The advisability of using the geothermal sources for
complex heat-cool supply of agriculture, giving a considerable economy of fuel
and improvement of ecologial conditions of the
environment, is substantiated.
Keywords: energy-ecological
efficiency, energy saving, municipal economy, agrarian complex, heat supply.
SUMMARY
THE RESULTS OF MONITORING OF
POLLUTION OF THE RIVER KVIRILA AND HIS VICINITIES WITH HEAVY METALS 2010-2015
THE PERIOD
Bakradze E.M., Kuchava
G.P. and Arabidze M.A.
Ministry of Environment and Natural Resources
LEPL
National Environmental Agency
This research deals with the degree of pollution of
the Kvirila River and the adjacent territory with
heavy metals, especially in the cities of Chiatura
and Zestaponi. The concentration measured in
reference areas and at anthropogenic influence points describes the dynamics of
changes in the concentration of heavy metals in 2010-2015.
Keywords: anthropogenic
influence, heavy metals, degree of pollution.
.
SUMMARY
DETERMINATION OF THE EFFECT OF
CONTROLLING VARIABLES ON THE EFFICIENCY
OF SEPARATION OF MINERALS OF DIFFERENT DENSITY WITH A DIAPHRAGM JIGGING MACHINE IN THE PROCESS OF
ENRICHMENT OF MANGANESE ORE
Gamtsemlidze M.N., Javakhishvili G.V., Arabidze Z.D., Rukhadze T.A., Tutberidze M.L. and
Tevzadze D.M.
LEPL G.Tsulukidze Mining Institute
Georgian
Technical University
The paper deals
with the investigation of the gravity concentration of the fine
fraction of manganese ore by jigging, in particular with a diaphragm jigging
machine. For effective separation of
different-density minerals, a driver source was developed. It allows changing
continuously the amplitude of fundamental vibrations of
water as well as obtaining the low-amplitude vibrations. The dependence
of controlling variables (water vibration amplitude, water consumption and
impact force)
participating in the process on the manganese content in the concentrate
on the basis of correlation analysis is given. By the dispersion method, a significant
impact of mentioned controlling variables on the manganese content in the concentrate
was determined.
Keywords: water
vibration amplitude, water consumption, impact force, dispersion ratio.
INVESTIGATION
OF THE STRUCTURAL CHANGES IN POLYPHENYLENE OXIDE IN THE PROCESS OF ITS
PROCESSNG AND FRICTION
Gurgenishvili M.B., Papava G.Sh., Sherozia V.A., Chitrekashvili I.A., Papava Sh.R. and Tabukashvili Z.Sh.
P. Melikishvili Institute of Physical and Organic Chemistry, Iv. Javakhishvili Tbilisi State University
Abstract. Structural
changes in polyphenylene oxide in the process of its
thermal processing and friction were studied by mass-spectrometry. It is shown
that, during thermal processing at 300oC, destructive-structuring
processes proceed in the polymer. At the same time, the Fries rearrangement
resulting in the brunching of macromolecules and formation of a gel fraction
takes place. When studying the tribochemical
processes with friction, it was revealed that the character of tribochemical processes in the polymer was determined by a
complex structure of molded samples containing a brunched cross-linked polymer
and a low-molecular fraction. The complex structure was formed at the interface
of rubbing surfaces as a result of friction.
Keywords: polyphenylene oxide, Fries rearrangement, tribodestruction, coefficient of friction.
SUMMARY
THERMOGRAVIMETRIC STUDY OF
TRIPHENYLMETHYLARSONIUM TETRABROMO-COPPER (II)
Kikalishvili M.I.
Akaki Tsereteli State
University, Kutaisi
The process of decomposition of arsenic-containing
compound [(C6H5)3AsCH3]2[CuBr4]
was studied by thermogravimetric analysis. It was revealed that first
an organic part separated. The final product of the thermolysis
was copper bromide.
Keywords: triphenylmethylarsonium, tetrabromo-copper,
thermogravimetric analysis.
POLYCONDENSATION OF PHENOL AND CARD-TYPE BISPHENOLS
WITH PARAFORM IN THE MELT
Molodinashvili Z.F.
Petre Melikishvili Institutte of
Physical and Organic Chemistry, Iv. Javakhishvili Tbilisi State University
Abstract. A new
continuous method of production of novolac-type
oligomers by interaction of phenol and Card-Type bisphenols
with paraform in the melt in the presence of an acid
catalyst was developed. To enhance the heat resistance of the polymers, complex
polymers with statistical arrangement of monomers in the macromolecule were
synthesized by simultaneous condensation of phenol and Card-Type bisphenols. The softening temperature of co-oligomers
increased from 70 0C to 90-1800C.
Keywords: copolymers,
polycondensation, phenol, Card-Type bisphenols, paraform.
DEVELOPMENT
OF A NEW CONTINUOUS METHOD OF
PRODUCTION OF THE NOVOLAC OLIGOMER AND THE STUDY ON ITS KINETICS
Molodinashvili Z.F.
Petre Melikishvili Institutte of Physical and Organic Chemistry, Iv. Javakhishvili Tbilisi State
University
Abstract. A new
continuous method of production of novolac-type
oligomers by interaction of phenol with paraform in
the melt in the presence of an acid catalyst was developed. To establish the
optimal conditions of the reaction, some kinetic regularities of the process
were investigated. It is shown that the reaction is of the second order. The
optimal conditions for formation of the oligomer are the following: temperature
– 100-1200C; duration of the reaction – 10 min; phenolic component:
formaldehyde molar ratio – 1.15:10; amount of the catalyst – 1 % in relation to
the phenolic component.
Keywords: novolac, oligomer, phenol, paraform.
SUMMARY
THE EFFECT OF THE DURATION OF FERMENTATION ON POMACE
ON THE PHYSICOCHEMICAL CHARACTERISTICS OF THE WINE KEPT IN THE KVEVRI
Meskhidze M.Z., Chkhartishvili N.N., Jakeli K.T., Andriadze G.T. and Khomasuridze M.B.
Georgian Technical University
Caucasus International University
The paper
deals with the effect of the duration of keeping the pomace
in the wine matured in the kvevri. The wine was
produced from Georgian grape cultivars Aladasturi, Otskhanuri Sapere and Odzhaleshi by the Kakhetian
technology.
Keywords: wine, pomace, fermentation, physicochemical characteristics.
SUMMARY
STUDY ON THE
SAFETY OF DRINKS
BY THE EXAMPLE OF CHACHA VODKA
Shilelashvili
I.I., Matiashvili Sh.I. and Buishvili G.T
Jakob Gogebashvili Telavi State University
Stable supply of safe food is one of important governmental
objectives which the health of the
nation depends on. Hence in this work we aimed to analyze the quality of Chacha vodka sold on the agricultural
market by farmers. Chacha vodka is distilled
from grain pomace. Based on the results of the analysis
we worked out some recommendations on the technology of Chacha
vodka:
1. Chaha should be distilled immediately after removal
from wine. During the
distillation, the first and the last distilled Chacha
should be removed, and the middle
distilled Chacha should be kept in barrels.
2. The
alcoholic fermentation of sweet Chacha obtained in
the result of
processing of white grapes should proceed at 15-18 0C
3. In
order to avoid undersired amount of ethyl acetate in Chacha vodka, we must protect it against acetic acid
bacteria and guarantee that the process will proceed under normal conditions.
Keywords: Chacha, vodka, pectin substances, raw alcohol, formaldehyde, deinactivation.
SUMMARY
THE MAIN MOLECULE OF LIFE – RNA
Jinjolia Sh. R.
Akaki Tsereteli State University,
Kutaisi
The paper dwells on the “RNA world”,
a hypothetical stage of the
origin of life on the Earth, where the genetic information is stored and the catalysis
of chemical reactions is performed by the RNA ensembles. There are considered
the experimental data and assumptions on the role of the main molecule of life
– RNA in the origin of life, which have been obtained by researchers over the
period of the last fifteen years.
Keywords: RNA, main
molecule of life, origin of life.
SUMMARY
EVOLUTION OF RIBOSOMES
Jinjolia Sh.R.
Akaki Tsereteli State University,
Kutaisi
The paper dwells on the issue of ribosome evolution.
There are discussed the results of studying the main ribosome part 23S-RNA of a
bacterium (Escherichia coli) carried out by Canadian biochemists. These results
justify that, during the period of evolution, ribosomes could rapidly develop
from protoribosomes. There are given the M and R, and
the results obtained by the Root-Bernsteins through
the use of bio-information technologies, and the assumption that ribosomes and
their precursors may represent a buffer stage between the “RNA world” and
cellular life.
Keywords: ribosomes,
evolution, protoribosomes.