summary
Formulae of extrapolations and filtration of
partially observed solutions to quasi-linear functional differential equations
with random disturbances.
part IV
Sokhadze G.A.
The explicit formulae of
prediction of the solutions to nonlinear functional differential equations with
random terms are presented. The evolutionary case and the case of so-called
generalized solutions in the Sobolev space are considered individually.
Keywords: functional differential equations,
extrapolation, filtration, prediction, Sobolev space.
SUMMARY
A note about the absolute continuity of measures at cylindrical-type
transformations
Sokhadze G.A.
The cylindrical-type transformation of the
functional space is discussed. The absolute continuity of measures at such
transformations is justified. The Radon-Nikodim equation is given.
Keywords: measure density,
functional space, absolute continuity, cylindrical-type transformation.
Summary
The relation between the inflation rate and the exchange rate
Bidjuk P.I.,
Gogoladze N.G. and Sokhadze G.A.
The relation between the price level index and the
currency exchange rate was established. This relation allows us to assess theoretically the
unknown parameter of the price index or the exchange rate.
Keywords: price level, exchange
rate, mathematical model.
SUMMARY
The System approach to econometric forecast based on using time
series models
Bidjuk P.I.
and Kordzadze T.Z.
The construction of forecasting functions is
considered for the following classes of
processes: stationary autoregression processes and autoregression with
the moving average. There are given forecasting functions, derived without and
with solving the model equations. The basic types of equations for describing
the heteroscedastic and cointegrated processes are discussed.
Keywords: econometric forecast, time
series model, autoregression, system approach.
SUMMARY
On the problem of surface wave damping in the conducting medium
being inhomogeneous by the frequency of electron collisions
The impact of inhomogeneity of the conducting medium
(plasma) on surface wave damping was studied for the case when, at constant
concentration of particles (electrons), the inhomogeneity of the medium is
caused by the inhomogeneity of the frequency of electron collisions. A
correction to the decrement of surface wave damping caused by this type of
inhomogeneity was determined. It is demonstrated that, if the absorption in
homogeneous plasma is the same both in the area of normal skin effect and in
the area of inertial skin effect, the additional absorption emerging at
inhomogeneous frequency of electron collisions has different values in those
areas.
Keywords: plasma, surface waves,
damping, inhomogeneous conducting medium, frequency of electron collisions.
Summary
The effect of energy localization on the
emergence of quantum-mechanical interaction
Kutubidze B.V. and Janelidze O.M.
There are presented the models of
activation of interactions in InP and GaAs by formation of the electric dipole
moment of quantum transitions by means of their excitation with deep centers.
The
Keywords: quantum-mechanical interaction, energy localization,
dipole moment.
SUMMARY
relationship between the magnitude of mobility and the concentration
of electrons
Kutubidze B.V.
and Janelidze O.M.
There is presented a model explaining the abnormal
decrease in the mobility of electrons in the case of reduction of their concentration.
The quantum interaction between electrons and dipole
moments of quantum transitions, occurring in the excited deep centers,
initiated by the localization of longitudinal acoustic oscillations of lattice
atoms (LL AOLA) is the source of efficient electron scattering and promotes the
resonance and London scattering of cold and warm electrons at increasing
tension of electric field or increasing temperature.
Keywords: mobility of electrons,
concentration of electrons, quantum interaction, relationship.
SUMMARY
THE ASSESSMENT parameters OF THE THICKNESS AND the COMPOSITION OF
THE ADSORBED LAYERS ON NANOPARTICLES OF NICKEL, COBALT AND TITANIUM POWDERS
PRODUCED by CONDENSATION FROM THE VAPOR phase
Kutelia E.R., Eristavi B.G., Okrosashvili M.N. and Okrosashvili
I.M.
The composition, the character of chemical bonding
with the metal atoms and the thickness of the adsorbed layers on the surface of
nanoparticles were studied. The analyses of separate layers were carried out by
sputtering of the investigated surface of the sample using the accelerated
argon ions with energy of 1keV. It was revealed that, after long-term
keeping in the air, the adsorbed
layer mainly consists of oxygen in the state of the physical adsorption on the
surface of the particles of the nanosized powders of nickel and cobalt, and that it does not take part in the
oxidation of the metal atoms. Oxygen is in chemical bonding with the titanium
atoms on the surface layers of nanoparticles, though the carbon atoms are not
in the state of physical adsorption. In the following sublayers, the tendency
of carbide formation is initially observed, but at the depth of 300Å from the physical
surface, along with titanium oxide, titanium carbide is present.
Keywords: nickel, cobalt, titanium,
nanopowders, adsorbed layers, vapor phase, assessment, composition, thickness.
summary
On ONE realization of sufficient conditions of optimality by krotov
for the neural-network dynamic system
Beradze M.S.
In this paper the
problem of optimal control for the continuous analog of discrete neural model
is stated and resolved. The analytical expressions of optimal processes on the
basis of Krotov’s sufficient conditions of optimality are given
.There is
offered an example of realization of
Krotov’s method for the four-dimensional system.
Keywords: neural network,
optimal processes, Krotov’s method..
Sammary
THE RADIATION
CHARACTERISTIC OF SHORT
DIPOLE ANTENNA
TAKEN AS A PROBE
Kotetishvili
K.V., Chilindrishvili D.R. and Chikhladze G.G.
A new theory of short dipole antenna placed into the
material environment is proposed. It is based on the solution of Hallen’s
integral equation for the short vibrator (dipole antenna). The solution of this
equation presenting the distribution of axial current through the dipole
antenna and the radiation characteristic of the short dipole antenna were found.
Keywords: probe, dipole antenna, vibrator, Hallen’s integral equation.
ON THE PROBLEM OF
ELECTROMAGNETIC
COMPATIBILITY OF ANTENNAS
Kevanishvili G.Sh., Sikmashvili
Z.I., Kevanishvili I.G.,
Kotetishvili K.V., Asanidze A.V.
and Chikhladze G.G.
Abstract: A new technique of
estimation and improvement of electromagnetic compatibility (emc) of antenna
systems is suggested. So-called compatibility function 
is
introduced; 
being some
dimensionless (relative) geometric parameter of the antenna. The analysis of
this function allows us to determine numerical values of providing
the eligible emc of the antenna within the given sector of space. The
effectiveness of the policy is illustrated by a particular example.
Keywords: antenna vibrator,
electromagnetic compatibility, directivity diagram.
PROPERTIES OF THE SYSTEM OF DIELECTRIC RODS PLACED IN DIFFERENT
CROSS-SECTIONS OF RECTANGULAR WAVEGUIDE
Dekanosidze Sh.V., Kvatadze Z.A., Kekelia G.V. and Chikhladze G.G.
Abstract: Electrodynamic properties
of the system of dielectric rods placed in different cross-sections of
rectangular waveguide were investigated. It is shown, particularly, that the
system under study exhibits the resonance properties of total reflection and
transmission.
Keywords: waveguide, reflection,
transmission, resistance.
Space
Time Codes with Outer Warp and CPM
Shavgulidze S. A., Asanidze A.V. and Dzagnidze T.I.
Abstract. This paper deals with the space time code design
of concatenated codes, where the outer code consists of lo parallel
concatenated
convolutional codes, and the inner code is continuous phase modulation (CPM).
The possibility of constructing the full-diversity space time codes is
discussed. A linear modulation approximation to CPM is given. Using the Gram-Schmidt orthogonalization
transform, the CPM signal is generated as a vector with finite energy in a
different Euclidean space. A woven coded CPM construction is considered in
searching channel codes which are able to exploit maximum diversity. The
investigations have been performed
for a quasi-static Rayleigh fading channel.
Keywords: space time codes, code constructions,
continuous phase modulator, outer warp.
Negation
and THE Negation of Negation in Power Engineering
Aburjania A.N., Begiashvili
V.I., Nachkebia Sh.Sh.,
Rezan Turan, Museliani T.G. and
Aburjania L.A.
Macroenergy Holding Company, Ltd.,
Sarda Corporation,
Abstract.
It has been
established that, at the analysis of multicircuit systems, Maxwell’s
mathematical form of expression of electromagnetic inertia of mutual induction
results in the equilibrium equations making no physical sense and may lead to
emergency situations. Induced current is the negation of inducing current
alteration. Mutual induction between the inducing and the induced currents is
negative. The mutual induction emf resulted from a change in the induced
current in the circuit of inducing current is the negation of negation.
Negation and the negation of negation serve as physical bases of field
propagation and energy transfer. In the case of positive magnetic coupling, the
mutual induction emf is negative and it inhibits the alteration of electric
current force in the circuit, and vice versa, in the cases of negative magnetic
coupling, the mutual induction emf is positive, and it contributes to the
alteration of electric current force in the circuit. The magnetic field energy
of inductively coupled circuits is defined as an algebraic sum of energy of separate circuits with an allowance for the
sign of mutual induction. Practical tasks of mathematical modeling have been
solved.
Keywords: inertia, induction, energy, emf, momentum.
Inertial Reference Frame
of Electrodynamics
(Abstract of the Articles Published in 2000-2007)
Aburjania А.N., Begiashvili V.I. and Rezan
Turan
Macroenergy Holding Company,
Ltd,
Sarda Corporation,
SUMMARY
Determination of the reliability function of nonredundant element of
power object
Namgaladze
D.P. and Kiziria T.I.
At considering the reliability indices of the system
element with recovery, the time of operation and recovery is usually accounted
for. But, in practice, there often occur the situations when, after the failure
of the system (or its element), it takes considerable time to begin repairing (time for revealing the
damages, time for organization of repairing work, delivery of spare parts
etc.).
The total dead time is called the waiting time. In the present work, the reliability
indices of the element of power object with account for the waiting time are
determined analytically by using Markovian processes.
Keywords: power object, reliability,
redundancy.
Summary
On the availability factor of power objects at recovery time
distribution by the erlang law
Namgaladze
D.P. and Gurgenidze D.R.
When considering the indices of maintenance of
designed or operating power objects, much attention is given to the
availability factor, which is defined as the probability that the power object
operates satisfactorily at any moment of operation, and that it is a
determinate value. In the work, a stochastic quantity, the availability index,
is introduced. Its density of probability distribution is analyzed for the case
when the operating time is distributed by the exponential law, and the recovery
time obeys the Erlang law.
Keywords: power object, reliability,
availability, availability index.
Summary
determination of the residual operating time of unrestorable element of power object with
Gurgenidze
D.R.
In practice, it is often necessary to determine the
functions representing the expected residual operating time for the power
object element which has operated without failure for some time. The density of
probability distribution of operating time could be determined from the initial
probability distribution of operating time. In this work, analytical relations
are derived for determination of the function of residual operating time in the
period of the first preventive inspection when the mean-time-between-failures
of the unrestorable element of the power object has exponential and normal
distribution.
Keywords: power object, reliability,
operating time, residual operating time, probability distribution.
SUMMARY
AUTOMATION OF DESIGNING of DISTRIBUTED OFFICE SYSTEMS ON THE BASIS
OF UML/ORM TECHNOLOGIES
Surguladze
G.G., Topuria N.Sh. and Vacharadze I.V.
The issues of designing and development of program technology of the
unified office-work of the distributed organizational systems on the basis of
modern object-oriented methods are discussed. A conceptual model of problem
area was constructed on the basis of Objective-Role Modelling. The structure of
relational database was designed in the automated mode. For simulation and
analysis of business processes of the distributed system, the graph of Petri
network was constructed.
Keywords: automation of business processes, database, Objective-Role Modelling, Petri networks.
SUMMARY
The DEPENDenCE OF THE ANTISUBLIMATION PROPERTIES OF THE COATINGs ON
THE working CONDITIONs OF THE ARMs OF THERMOCOUPLES based on THE PbTe ALLOY
Basaria F.P., Bokuchava
G.V., Barbakadze K.G. and Biliseishvili M. J.
I. Vekua Institute of
Physics and Technology,
Glass/enamel coatings based on SiO2-B2O3-PbO-Na2O
for the surface of the arms of thermal elements (made from PbTe) do not worsen the electric and
mechanical properties. Besides, the high level of antisublimation protection is
conditioned by the “soft” state of the glass/enamel coating
(viscosity 106-1011Pa) at working temperature 350-5000C
of the thermal element arms.
Key words: thermal element arms,
glass/enamel coatings, antisublimation properties.
SUMMARY
On The Impact of weak Magnetic Fields on Biological Systems
Kandelaki A.Sh.,
Kvavadze M.G. and Kandelaki M.A.
The impact of weak magnetic field on the water
solution of albumin was studied. It was revealed that slight impacts of
magnetic field on the products of thermodissociation of water and their spins
could cause macroscopic changes in the structure of water and albumin dissolved
in it.
Keywords: biological systems,
albumin, water solution, weak magnetic field, structural changes.
Summary
The unity of symmetry and asymmetry – the basis of life. Part
I
Tsivtsivadze T.I.,
Chigogidze N.Sh., Skhiladze R.A. , Kldiashvili R.Sh. and Sulakvelidze G.A.
Problem
Laboratory of Synthesis and Research of Physiologically Active Substances No.
393
The dialectical unity of symmetry and asymmetry is
considered as the basic of life. The development of the notion of symmetry from
the ancient times to the present day is demonstrated. It is noted that the
principles of symmetry play a dominating role in the perception of the world
around us and in the existence of limitations in the diversity of structures
and the number of possible versions imposed by these principles. Diverse
manifestations of symmetry in animate and inanimate nature are analyzed.
Keywords: basis of life, symmetry ,
asymmetry, unity of symmetry and asymmetry.
SUMMARY
ON ONE HYPOTHETIC MODEL OF
ACCELERATED EXPANSION OF THE UNIVERSE
Sepiashvili D.P.
The information which reaches us from the outer
environment is descrete. We can watch the real world only in particular time
intervals. Quanta permanently disappear and emerge again in the real world. The
time (Dt) it takes the quantum to
disappear from watcher’s field of vision determined by Heisenberg law: Dt ×DE ~
. The lower is the frequency, i.e. the quantum energy, the
longer is the time (Dt) it takes the particle to
disappear from or to emerge in the real space. As the Universe expands, the
frequency, i.e. the energy of quanta, decreases. As this takes place, if the
number of quanta existing in the real space-time decreases, the mass of the
matter actually existing in the Universe will decrease, which, in its turn,
will make weaker the gravitational field. As the frequency of fluctuations
decreasesб the length of quanta, v=C/l, increases, i.e they
“stretch”. Probably just this phenomenon manifests itself in the
form of accelerated expansion of the Universe.
Keywords : matter, the Universe,
expansion, quantum, hypothesis.
SUMMARY
On the probable results of joint operation of
the man-quantum computer system
Khvedelidze
M.A.
The author considers the issue of probable results
of joint operation of the man-quantum computer system from the standpoint of the global law of
duality of energoinformation work of the matter allowing to extend
significantly the knowledge about the Universe. This law was justified in previous
works.
Keywords: matter, duality of
energoinformation work, man-quantum computer system, joint operation, probable
results.
Summary
Specific
features of plastic deformation of
reinforced sintered materials
Sharashenidze D.А. and Ramishvili V.N.
F. Tavadze Institute of Metallurgy
and Materials Science
A
method of reinforcement of the powder matrix with wire has been developed. The
method allows producing the noncompact reinforced blanks for their subsequent plastic deformation. The
investigation of deformation and sintering of the granular matrix-reinforcing
material system was performed for composition Ni-W and Ni-Mo.
Keywords: powder metallurgy,
sintered materials, reinforcement plastic, deformation.
Summary
The
prospects of development of electric power network in
Mshvidobadze T..J.
The possibility of application of one of the versions
of development of the electric power network in
Keywords: electric power network, development,
prospects, grouping algorithm.
Summary
Cryptographic
data protection in the local network
Adamia V.B., Arabuli N.V.,
Machavariani N.V. and Eliauri L.Sh.
The cryptographic method of data protection in the
local network is discussed. The method involves real-time coding. This is the
simplest and the most efficient way of protecting the transmitted data against
unauthorized access. The proposed version of the method is considered. for
specific conditions with a lot of constraints. There is given the mathematics
of applicability of the method, which justifies its high reliability.
Keywords: cryptography, data
protection, local network, real-time coding.
Summary
AUTOMATIC
CONTROL OF IMPRINT QUALITY
Taktakishvili
G.N., Partskhaladze R.I., Kvezereli T.I. and Jashi D.R.
COLOR Company
There is proposed a method
of color-printing quality control by means of the equipment for generation of
electronic image-forming device, which consists of an optoelectronic system and
an A4 scanner emitter. The design of the equipment and the original software
described in the article allow us to calculate accurately and efficiently the
densitometric parameters of multicolor imprint and to find the error in the
alignment of the register marks. The adjustment of the device, retaining of the
reference color parameters and the register correction are performed
automatically.
Keywords: polychromatic print, color, optical
compactness, scanner.
New ENVIRONMENT
FRIENDLY Resource-Saving Technology for Processing of Arsenic- Containing Ores
Iashvili T.S.
Abstract.New technology of
processing of arsenic-containing ores is proposed. This technology allows
improving some parameters of processing, namely, decreasing the process
temperature from 800-10000C to 615-6500C, decreasing the
processing time form 8-19h to 1.5-2h, increasing the yield of arsenic etc. The
proposed technology fulfils the ecological requirements. This technology can
also be used for extraction of accompanying arsenic from the ores of nonferrous
metals. The technology allows processing the arsenic-containing residue and
reducing the concentration of arsenic in the residue to the permissible limit.
Keywords: arsenic,
arsenic-containing ores, processing, residue.
SUMMARY
STRUCTURE OF
HEXAMETHYLENETETRAMINE MONOHYDROCHLORIDE
Miminoshvili E.B., Vardosanidze
T.O. and Miminoshvili K.E.
There
are presented the results of X-ray analysis of the structure of
hexamethylenetetramine monohydrochloride (C6H13N4)Cl
at temperature 153(2)K (а=8.860(1); b=8.860(1); c=8.929(1)Å, γ=120º, V=607.02(10)Å3; R3m, Z=3; R= 0.0202).
Keywords: molecular
structure,
hexamethylenetetramine monohydrochloride, Urotropin, X-ray analysis.
SUMMARY
Kinetic method of determination of nanogram amounts of iodine in
natural objects
Supatashvili
G.D., Karsanidze N.K., Loria N.V., Liparishvili S.N., Shedania Z.V. and
Janashvili N.E.
Iv.
A kinetic method has been used for determination of
nanogram amounts of iodine in natural water and foodstuffs of vegetable and
animal origin. The method is based on the indicator reaction between nitrite
and thiocyanate ions. The
sensitivity of the method is 5 ng, and the mean error is less than 5%.
Keywords: natural objects, iodine,
nanogram amount, kinetic method.
SUMMARY
Determination of the dependence of the amount of precipitated agent
on the concentration of the reagent-solution and the time
Dondoladze
N.G., Megrelishvili Z.N. and
Mekvabishvili N.I.
For the development of the technology for water
softening with the use of the reagent-solution, the nature of changes in the
precipitation rate at different concentrations of the reagent-solution was
investigated. The approximation of dependence of the amount of precipitated agent on the reagent –solution
concentration and the time of precipitation is discussed. The agreement between
the data obtained experimentally and the data calculated according to the
obtained dependence was evaluated by 
criterion. For
this purpose, the obtained results were checked for homogeneity, random
character and stability in time.
The tables for calculating the criterion are
given. For the number of degrees of freedom
and for the
probability level 
, the criterion was
determined,
Keywords: water softening,
reagent-solution, natural water, precipitation, approximation, criterion.
SUMMARY
EXPERIMENTAL design and optimization of the processes of extraction
of tea lipids
Tsutskiridze
N.R., gvinianidze T.N. and
Buchukhishvili M.L.
Optimal economic parameters of the processes of
extraction of tea lipids (the product yield and the cost per unit of
production) and the factors affecting these parameters are discussed. The
experimental design of those processes was performed. The realization of the
matrix of second-order central composition rotatable design allowed deriving the
adequate regression equations describing the processes. By using the method of
indefinite Lagrange factors, the optimal conditions of the production process
of extraction of tea lipids were established.
Keywords: lipids, tea, extraction,
process optimization, experimental design.
Summary
Investigation of the kinetics of the process of withering
of tea mass in the vibroaeropseudocondensed layer
Megrelidze
T.J., Shubladze Z.L., Dolidze B.Z. and Galogre L.J.
Scientific – Production Association of Subtropical Cultures and Tea
Production
The process of tea mass
withering in the vibroaeropseudocondenced (VAPC) layer is discussed. There are
given the experimental results at harmonic mode of vibration of the working
body with variable parameters: air temperature T=320-330k; amplitude of vibrations A=0-7mm;
relative humidity of tea mass W=60-75%. It was established that, when the air
temperature at the installation inlet increased from 320k to 330k, the
time of withering decreased by a factor of 4 to 12. The vibrations with the
amplitude of 3mm hardly affected the withering rate. When the amplitude was
increased from 3mm to 7mm, the rate of withering changed significantly. The empirical formula for calculation of
the rate of tea mass withering in the VAPC layer was derived, and the optimum
parameters were established.
Keywords: tea
leaves, withering, vibroaeropseudocondensed layer, kinetics.
Summary
Investigation
of the motion of green tea leaves In the vibroaeropseudocondensed layer
Megrelidze
T.J. , Shubladze Z.L. and Dolidze B.Z.
Scientific-Production
Association of subtropical cultures and tea production
The belt conveyer unit with convection heat feeding,
which is commonly used for withering of tea leaves, is discussed. It is
mentioned that this unit has significant drawbacks, the main of which is the
nonuniformity of the withering process, which adversely affects the product
quality. For intensification of the process of tea mass withering by achieving
the uniform withering, a rational method of simultaneous treatment of tea
leaves with vibrations and the products with hot air from bottom upwards was
chosen. By theory, there were derived differential equations of the motion of
tea leaves on the vibrating surface and the equation determining the critical
frequency of roller rotation under the condition of removal of the tea leaf
from the vibrating surface. The obtained theoretical data were justified
experimentally.
Keywords: green tea leaves,
vibroaeropseudocondensed layer, motion , withering.
Summary
Investigation of the velocity of soaring of green tea leaves
Megrelidze
T.J., Shubladze Z.L. , Dolidze B.Z.
and Galogre L.J.
Scientific-Production
Association of Subtropical cultures
and Tea Production
The necessity in performing the experiments for
determination of the velocity of soaring of green tea leaves with the aim of
designing a unit for tea leaf withering is demonstrated. There is given a circuit
diagram of the experimental device for determination of the velocity of soaring
of tea leaves with consideration for simultaneous action of vibrations and the
air stream. It was determined that the velocity of tea leaf soaring increased
from 2.67
m/s to 4.65 m/s when the tea mass thickness was increased from 80mm to 240mm at
relative humidity W1
=70-75%. At increasing the tea mass thickness from 60 mm to 180 mm and at
relative humidity W2 = 60-62%, the velocity of tea leaf soaring
increased from 3.17 m/s to 6.13 m/s.
Keywords: green tea leaves ,
vibroaeropseudocondensed layer, withering unit, soaring velocity
SUMMARY
PECTIN SUBSTANCEs of Georgian CHERRY-LAUREL FRUIT
Khetsuriani G.S., Tavdidishvili D.R. and Minadze
N.M.
The chemistry of cherry-laurel fruit growing in
Keywords: cherry-laurel, pectin substances, preventive foodstuff.