summary
formulae of extrapolations and filtrations of partially observed solutions to
quasi-linear functional differential equations with random disturbances. part
V
Sokhadze
G.A.
Akaki Tsereteli State University, Kutaisi
There
are given explicit formulae of filtration of the solution to the differential equation with the random right-hand part
by observations of the component. The evolutional case is considered separately.
Keywords: quasi-linear
differential equations, extrapolation , filtration, random disturbance.
summary
on a nonlinear transformation with random disturbances
Sokhadze G.A.
Akaki Tsereteli State University, Kutaisi
A
nonlinear transformation with a random parameter is considered. For the measure emerging from the
solution of the corresponding equation, the conditions of absolute continuity in relation to
a simper measure were found.
Keywords: nonlinear
transformation, random disturbance, absolute continuity, density of measures, nonlinearity.
On the absolute
continuity of corresponding measures of
differential equations
with the deviated argument
Chkonia T.G. and Sokhadze G.A.
Akaki Tsereteli State University, Kutaisi
Abstract. Quasi-linear differential equations with the deviated argument and
with the randon right part are discussed. Adequate conditions of absolute
continuity regarding simpler measures were derived for distribution of the solutions
of these equations. The Radon-Nikodim densities were calculated.
Keywords: density of measures, absolute continuity, differential equations, deviated argument.
ELECTROMAGNETIC COMPATIBILITY OF DOUBLE-WAVE DIPOLE VERTICALLY ERECTED
ABOVE the EARTH SURFACE
Kevanishvili G.Sh., Sikmashvili Z.I., Kevanishvili I.G.,
Kotetishvili K.V., Asanidze A.V. and Chikhladze G.G.
Georgian Technical University
Abstract. The electromagnetic compatibility (emc) of
vertical double-wave dipole erected at some height above the Earth surface in the
given Ω-area of space is sonsidered. The method of investigation is based
on the analysis of so- called compatibility function 
, which was suggested by
the authors in an earlier paper, 
being some dimensionless (relative)
geometric parameter. It is shown that a high degree of emc of the dipole (or
its noise immunity) within the Ω-area is reached at such γi
(i = 1, 2, 3, …) values of -parameter for which the function takes on the minimal values.
Key words: dipole,
electromagnetic compatibility, pattern.
ON FREDHOLM’S INTEGRAL EQUATION OF THE SECOND ORDER
WITH THE SYMMETRICAL FINITE KERNEL
Kevanishvili G.Sh., Kevanishvili I.G. and Tskvitinidze I.V.
Georgian Technical University
Abstract: The strict solution
of Fredholm’s integral equation of the second order with the symmetrical
finite kernel, appearing in antenna theory and diffraction of waves, is
presented. There is considered a special case when the free term of the equation contains an
unknown coefficient, determined from the additional, physically adequateб condition.
Keywords: integral equation,
finite kernel, Fredholm equation, antenna theory, diffraction of waves.
On The ELECTROMAGNETIC COMPATIBILITY OF SIMPLE PANEL
ANTENNA
Kevanishvili G.Sh., Sikmashvili Z.I., Kevanishvili I.G.,
Kotetishvili K.V., Asanidze A.B., Dzagnidze T.I. and Chikhladze G.G.
Georgian Technical University
Abstract. A modernized theory
of simple panel antenna is suggested. An integral equation for the axial
current generated on the surface of panel dipole was derived. This equation belongs
to the class of Fredholm’s inhomogeneous equations of the second order
with the symmetrical kernel. The solution of this equation in the closed form was
obtained. For assessment of electromagnetic compatibility emc of panel antenna
the method suggested by the authors in earlier works was used. The numerical data ans the recommendations for
improvement emc are given.
Keywords: panel antenna,
integral equation, electromagnetic compatability.
SUMMARY
Passage OF the
PLANE ELECTROMAGNETIC WAVE THROUGH THREE-LAYER DIELECTRIC AREA at THE
PRESENCE OF A PERIODIC GRATING INSIDE IT
Kokrashvili
G.T., Kevanishvili I.G.,
Kokrashvili T.A. and Chikhladze G.G.
Georgian
Technical University
The
electromagnetic properties of three-layer dielectric antenna radome with a
periodic grating are investigated. The optimal operating regime of the radome,
at which it becomes maximum transparent in relation to the plane
electromagnetic wave incident on it, has been established.
Keywords: antenna, dielectric radome, plane
electromagnetic wave, periodic grating, transparency coefficient.
SUMMARY
Passage OF the
PLANE ELECTROMAGNETIC WAVE THROUGH THREE-LAYER DIELECTRIC AREA at THE
PRESENCE OF A PERIODIC GRATING INSIDE IT
Kokrashvili
G.T., Kevanishvili I.G.,
Kokrashvili T.A. and Chikhladze G.G.
Georgian
Technical University
The
electromagnetic properties of three-layer dielectric antenna radome with a
periodic grating are investigated. The optimal operating regime of the radome,
at which it becomes maximum transparent in relation to the plane
electromagnetic wave incident on it, has been established.
Keywords: antenna, dielectric radome, plane
electromagnetic wave, periodic grating, transparency coefficient.
SUMMARY
ON
THE ISSUE OF SOUND EMISSION BY THE BOUNDARY LAYER IN THE REGIME OF CRITICAL
REGION CRISIS
Gulua Yu.K.
Sukhumi State University
The sound
emission by the boundary layer in
the regime of critical region crisis is discussed. It is demonstrated that, in
this regime, besides the vortex sound, there must be generated the sound of
lower frequency, which is caused by the motion of flow detachment point. The
intensity of this sound is proportional to the sixth order of flow rate.
Keywords: boundary
layer, critical region crisis, low-frequency sound, sound emission.
SUMMARY
ON
THE POSSIBILITY OF RESOLUTION OF THE PARADOX OF SCIENCE AND RELIGION.
PART
I
Khvedelidze M.A.
International Informatization Academy
Georgian Engineering Academy
The
author offers a hypothesis for resolution of the paradox of science and religion
reasoning from his concept of energoinformation duality (ERDC), which allows
justifying the self-organization of energoinformation work of matter (SOEIWM)
in complex units - electron volt×bit. The author demonstrates the ability of matter of self-organization,
which was first revealed by M. Eigen. The generalized field of science called
synergetics also supports the ability of matter of self-organization
immediately from physical-chemical structures. From the above reasoning, it is
possible to justify the possibility of emergence of the trinity of
matter-energy-structural information, which determines the self-organization of
energoinformation work, in known space-time limits of knowledge about the
Universe.
Keywords: religion, science,
paradox, energoinformation duality, self-organization of energoinformation work
of matter.
Summary
The Unity of Symmetry and
Asymmetry – the basis of life. Part II
Tsivtsivadze T.I., Chigogidze N.Sh. Skhiladze R. A., Kldiashvili
R.Sh. and Sulakvelidze G.A.
Georgian Technical University
Problem Laboratory of Synthesis and Research of
Physiologically Active Compounds No.393
The
specific features of symmetry in the flora and the fauna, the existence of
enantiomorphs, are discussed. There are demonstrated the manifestations of
symmetry on the atomic level, the existence of certain symmetry of nuclear
forces and permutation symmetry of particles in the Universe. The Pauli
exclusion principle and the fermion and the boson character of particles are
considered.
Keywords: basis of life,
symmetry, asymmetry, unity, enantiomorphs.
Summary
Magnetic character of alloys
of g-manganese with transition 3d-metals
Berikashvili T.N., Gogua A.L., Gogua T.L. and
Kalandadze I.G.
Georgian Technical University
The
magnetic character of atomic structure transformations in the alloys of g-manganese with transition 3d-metals was investigated. Using the methods
of neutron diffraction, the mechanism of antiferromagnetic ordering of magnetic
moments of manganese atoms was established. Bodning between the magnetic and the crystalline strictures
of the alloys based on g-manganese was revealed. A formula for calculating the magnetic moment
with the help of experimental data of neutronography was derived.
Keywords: alloys, g-manganese,
transition 3d-metals, magnetic moment, neutron diffraction.
SUMMARY
Structure of
hexaaquacobalt(II) dichloride bis(hexamethylene tetramine) tetrahydrate
Miminoshvili E.B., Vardosanidze T.O., Beridze
L.A. and Miminoshvili K.E.
There was investigated the structure of hexaaquacobalt(II) dichloride bis(hexamethylene tetramine) tetrahydrate at temperature 153(2)K;
(а=9.2482(7)Å, b=9.3903(7)Å, с=9.4562(7)Å,
a=119.601(2)º,
b=94.332(2)º,
g=101.118(2)º,
V=686.45(9)Å3, P-1, Z=1; R= 0.035).
Keywords: crystal structures,
hexamethylene tetramine, Urotropin, X-ray analysis.
SUMMARY
THE STUDY ON POLYPEPTIDES OF THYLAKOID MEMBRANES OF
CHLOROPLASTS AT LOW TEMPERATURE
Zarkua M. Z.
Sukhumi State University
The
research concerns the state of chlorophyll-protein complexes of chloroplast thylakoids
and the changes in the polypeptide composition of choloplast thylakoids in
lemon leaves at low ambient temperature. It is shown that, when the ambient
temperature decreases, the content of chlorophyll a/b-protein and P700-chla-protein
complex monomer forms increases. The low temperature is supposed to promote
lipid enrichment, which makes the pigment-protein monomer forms prevail. The
leaves of two varieties of lemon
were studied. It was established that the polypeptide composition of thylakoids
of the leaves of both varieties is characterized by considerable conservatism
when the temperature decreases. It is evident that the high stability of
chloroplast membranes of a more frost-resistant variety of lemon at low ambient
temperature is determined by the strength of pigment-protein and
protein-protein interactions of basic components of thylakoids.
Keywords: cloroplasts, thylakoid
membranes, polypeptides, low ambient temperature, chlorophyll protein complexes.
Summary
Development of water-soluble materials on the base of manganese
sludge
Khutsianidze M.G., Mshvildadze M.J. and Cheishvili T. Sh.
For activation of water solubility of manganese
sludge, there were synthesized and studied the materials based on the
composition of manganese sludge and boric acid. It was revealed that the
composition of initial mixtures and the temperature of heat treatment (600-9000C)
determine the possibility of formation of crystalline or amorphous manganese
borate phases. By varying the ratios between these phases, it is possible to
produce the materials with the predicted degree of their solubility in water
solutions.
Keywords: water-soluble materials,
manganese sludge, manganese borate.
SUMMARY
ANTICORROSIVE
PROTECTION OF METALLIC PIPELINES IN OIL INDUSTRY
Berdzenishvili
I.G.
On the basis of non-deficient complex materials,
highly effective protective glass coatings for pipelines were synthesized. The obtained
enamels are distinguished by their low burning temperature, a wide temperature
range of coating formation, high
quality of surface purity, high acid and alkaline resistance satisfuing ISO
2473 and ISO 2745. The process of glass formation
in the compositions containing technogenic raw materials was studied.
Keywords: enamel, protective
coatings, pipeline, corrosion, adhesion.
SUMMARY
ON THE PROBLEM OF
PRESERVATION OF WATER RESOURСES
Dolidze A.V. and Dolidze
V.A.
Some issues of preservation of purity of available
water resources and the basic methods of water quality control are discussed.
There are given general data on water and its anomalies, the tendency of water
consumption in the world etc. The basic trends for improving the existing
situation in the field of preservation of water resources are considered.
Keywords: water, water resources,
preservation, water quality control, prospects of water preservation.
summary
on
the chemical composition and the pollution of waste waters
DolidzeA.V., DolidzeV.A and
Makhashvili K.A.
There are discussed some issues associated with the
specific features of chemical composition of waste and natural waters and also
the basic ionized impurities of natural waters and their characteristics. The admissible
concentrations of radionuclides in natural and waste waters are given, the
maximum permissible concentrations of chemical agents in potable water
established by different agencies and services are considered.
Keywords: water, waste waters,
chemical composition, pollution.
Summary
Determination of the residual operating time of unrestorable element
of the electric power object at The wayball distribution
Namgaladze D.P
and Gurgenidze D.R.
In practice, it is often essential to determine the
residual operating time for an unrestorable element of the electric power
object which has operated without failure for a certain time. The density of
probability distribution of operating time can be determined from the initial
probability distribution of
operating time. In this work, the relations for determination of the function
of residual operating time of the unrestorable element at the exponential and Wayball
distributions are analytically derived.
Keywords: electric power object,
reliability operating time, unrestorable element, Wayball distribution.
Summary
An Ergatic approach to the reliability of electric power systems
Gurgenidze
D.R.
The definition of the availability factor of
electric power system with the consideration for the human factor (ergatic
element) is discussed. Based on Markovian processes and statistical data, an
analytical expression for the availability factor of monoergatic system has
been derived. The procedure of construction of the availability diagram and
determination of the time of restoration of the ergatic element by this diagram
is proposed.
Keywords: electric power system,
reliability, availability factor, ergatic element.
Summary
Determination of the reliability function of the redundant element
of electric power object
Kiziria T.I.
From the standpoint of reliability theory, four
basic states of the element of electric power object, which it changes to
during its lifetime, can be distinguished: the operating state, being in
unloaded reserve, the state of preventive maintenance or scheduled repair, and
the emergency state. Considering
the reliability indices of the system element with recovery, they usually
consider the operating time and the recovery time. However, in practice, there
often occur the cases when, after a failure of the system (or its element),
some time passes till the beginning of repair (time for revealing the damage,
time for organizing the repair, delivery of spare parts, etc.). The total idle
time is called the waiting time. In this work, based on Markovian processes,
the reliability factors, of redundant element of electric power object are
considered with account for the waiting time.
Keywords: electric power object, reliability redundancy.
Summary
Analysis of reliability of the periodically and continuously
controlled queuing system with time redundancy
Mikadze I.S.,
Namchevadze T.V. and Gobiani I.R.
There is proposed a generalized mathematical model
of the queuing system with time redundancy without preliminary checking of the
queuing system at transition from the
Keywords: queuing system, control,
reliability, time redundancy.
Motion direction
control of hexapod walking robot
Machavariani G. A.
Abstract. One of possible realizations of turning kinemtics of hexapod walking
robot is proposed. The essence of this realization consists in the use of
internal sensor device mounted on the robot body. The output singal of the
sensor device is used as the control input in the regulators of stepping
duration and the regulators of velocities of right and left legs of the robot.
Under these conditions, the lower control level controls the process of robot
turning.
Keywords: hexapod walking robot, motion control, turning kinematics.
Production of bio-ethanol from the recycled products
of agriculture by using alcohol-generating
bacteria
Mujiri
Abstract. One of the ways of
resolution of the global challenge of biotransformation of photosynthesis
products is the production of bioethanol from vegetable biomass by using the
microorganisms.
Bacteria Zymomonas
Mobilis were isolated and studied from the abovementioned point of view. It
was revealed that, besides the absence of catabolytic repression and tolerance
to ethanol, these bacteria have 3-time as much glucose-ethanol specific
conversion rate as yests. Basing on the experimental results, it can be inferred
that Zymomonas are among the most
promising alcohol-generating microorganisms.
Keywords: alcohol-generating
bacteria, biotransformation, bioethanol agricultural wastes.
Summary
screw
Sordia T.D.,
Mumladze M.G. and Kuchukhidze R.A.
I. Vekua
Sukhumi Institute of Physics and Technology
The application of plasma technology to production
of sensitive conducting graphite-nickel films from powder materials allows
forming the film on any profile of
alkaline metal leak detectors for nuclear power plants.
Keywords powder materials, coating,
plasma method, screw cam.
summary
wide-band coherent Ds-cdma for ground radioaccess umts
Murjikneli
G.G., Robitashvili G.A., Vekua
T.A., Gogilashvili E.M. and Khatelashvili A.R.
Up-to-date issues of wide-band coherent DS-CDMA for
ground radioaccess UMTS are discussed. There is shown the possibility of
application of wide-band CDMA as a method of multiple access in radioaccess
system UTRA UMTS.
Keywords: wide-band coherent system,
ground radioaccess, CDMA, UMTS.
Summary
Review of the standards of telecommunication systems on the basis of
atm
Murjikneli
G.G., Robitashvili A.G., Vekua T.A. and Kobakhidze K.T.
The basic standards of telecommunication systems
based on ATM are considered: the Standards of the Consultative Committee of the
American National Standards Institute (ANSI), The Institute of Electrical and
Electronics Engineers (IEEE) the ATM Forum and the European Telecommunication
Standards Institute (ETSI).
Keywords: telecommunication,
International Standards, ATM, wide-band digital system, integration of
services.
summary
Application of the method of cdma in cellular
Murjikneli G.G., Robitashvili G.A., Vekua T.A., Robitashvili A.G. and
Madurashvili D.G.
The specific features of
cellular mobile telecommunication systems based on the method of CDMA and its
modifications are discussed. Such systems represent the base of future cellular
mobile communication networks.
Keywords: telecommunication, cellular mobile systems,
multiple access systems.
summary
A DEVICE FOR
CHECKING THE ACCURACY OF ELECTRIC POWER
METERING OF
ELECTRICITY METERS CONNECTID TO THE THREE-PHASE MAINS
Khachapuridze o.s.
There is proposed a device for checking the accuracy
of electric pover metering of electricity meters connected to the three-phase mains.
The device cosists of two low-powered voltage transformers, the primary
windings of which are connected to the voltages of instrument voltage
transformer of the substation.
Keywords: electricity metering,
electricity meter, accuracy, three-phase mains, checking device.
On the
Record Management and Storage Structures in Databases
Kobiashvili A. A.
Abstract. The stored record
management function in databases is considered. The scheme of representing the
records which uses the flexibility of indirect addressing is offered.
Keywords: record management,
database, DBMS, data access, direct addressing, record identifier.
Perfection of
Object-Oriented Projecting with a Process-Oriented Approach
Turkia E.G. and Giutashvili M. Z.
Abstract. In the article, the
technology of a new trend for projecting and modeling of information systems is
suggested. More precisely, there are proposed the process-oriented approach and
the business-process management notation, which have been developed for improvement
of object-oriented projecting. Also there are considered the additional
elements of projecting in accordance with the business-process management
notation (BPMN) and the importance of process-oriented approach for designing
the distributed information systems. On the basis of BPMN, an example of the
business - processes model (Getting money at an ATM) is presented.
Keywords: object-oriented projecting,
process-oriented approach, unified modeling language, service-oriented
architecture, business-process modeling, business-process management notation.
SUMMARY
FOODSTUFFS ON THE BASE OF
THE PEAR OF KIEFFER SEEDLING VARIETY
Kereselidze
M.B.and Mujiri
The
possibility of production of various food-stuffs on the base of the pear of
Kieffer Seedling variety is discussed. It is demonstrated that the wine materials and the substrates
produced from this pear are characterized by rich useful biological and
nutritive properties.
Keywords: pear, extraction,
foodstuffs.
SUMMARY
Development
of the Optimal Conditions for Production of Extracts frOm Some fruit and
vegetable Raw Materials
Iluridze N.Sh. and Mujiri
L.A.
Institute of Food Industry
Rational usage of the biologically active is one of the most important
and perspective directions. The R&D works performed in this field are not
versatile and do not resolve the problem of exact and rational use of raw
materials. With this purpose we considered it necessary to develop the
recommendations on the efficient application of vegetable extracts. As raw
materials, there were used blackberries, Cornelian cherries, the Caucasian wild
pear, the wild Eastern apple, bilberries, red currants, raspberries,
ashberries, the berries of elder and arrow-wood, soya, Bulgarian pepper, carrot inoculum, beet, onions, spinach
and Sophora japonica. The extraction
was carried out by drawing, hot extraction repelcolation at room temperature
and heating. The experiments on establishing the optimal, concentration of
ethanol showed that the highest yield of extracted substances was 40-55%vol.
for berries and 20-35% vol. for vegetables. The extracts produced have pleasant
organoleptic properties, limpidity and keep their biological activity.
Keywords: extracts, raw materials, production berries, vegetables.
SUMMARY
IDENTIFICATION OF FREE FATTY ACIDS IN LAO TEA
Tsomaia I.V.
Tbilisi State Medical University
The
raw material of tea leaves was studied for the content of higher fatty acids,
after its purification and sample treatment. By the chromatographic method, the
content of fatty acids of the complex of biologically active lipid group of
coarse tea leaves and extract-concentrate was determined.
Keywords: lao tea, tea leaves,
fatty acids, identification.
SUMMARY
APPLICATION OF TEA LEAVES IN MEDICINE
Tsomaia I.V.
Tbilisi State Medical University
The
effect of tea leaves and tea extracts on different human organs is discussed. The
examples of their use in traditional and folk medicine and in preparation of
medicines and vitamins are cited.
Keywords: tea, tea leaves,
medicine, preparations.