ON THE STATISTICAL ESTIMATION OF THE PROBABILITY
DISTRIBUTION DENSITY: PART V. THE INTEGRAL MEAN-SQUARE ERROR OF NUCLEAR
ESTIMATES OF THE PROBABLITY DISTRIBUTION DENSITY
Buadze T.G.
Georgian Technical University
Abstract. The article
deals with the asymptotic behavior of the integral mean-square deviation of
nuclear estimates of the unknown density of probability distribution.
Keywords: statistical
estimation, probability distribution density, nuclear estimate, integral
mean-square error.
SPECIFIC FEATURES OF CORPORATIVE COMPUTER NETWORKS
Kamkamidze K.N.
and Pirkulashvili N.R.
Georgian Technical
University
Corporative information systems (CIS) are integrated management systems
of the territorially distributed corporation. Their architecture comprises the
software/hardware base of the realization of CIS, the database organization,
the architecture and topology of the computer network, telecommunication
facilities, and data processing hardware.
Keywords: computer
network, server, database, work station.
MARCOVIAN DECISION PROCESS IN ONE MULTICHANNEL FLOW CONTROL SYSTEM
Giorgobiani J.A., Nachkebia M.D. and Giorgobiani G.J.
Niko Muskhelishvili Institute of Computational Mathematics
of the Georgian Technical University
The paper deals with one
multichannel problem of the flow control, which is targeted to minimize the
total loss. Each of the channels is controlled by the principle of the Morran model, but, in
contrast with it, the parameter of service is chosen stepwise for each channel.
The mathematical model is based on the principle of dynamic programming,
particularly on the Marcovian decision process.
Keywords: Marcovian
decision process, dynamic programming, multichannel problem, flow control.
QUANTIZATION MATRICES OF THE
TRANSFORMANTS OF DISCRETE COSINE TRANSFORMATION
Khuntsaria J.M. and Machaladze R.I.
Different versions of the matrix
of quantization of the transformants of discrete cosine transformation of
images are presented. It would be
reasonable to use them in the process of adaptive quantization, thus improving the
efficiency of encoding under the conditions of constant qualitative indices.
Keywords: discrete cosine transformation,
matrix of quantization, Huffman code.
DESCRIPTION
METHODS AND FORMALISMS OF SOFTWARE SPECIFICATIONS
Khartishvili
M.P.
Georgian
Technical University
In programming it is useful to distinguish
between the abstract computation structures (also called the “abstract data
types”) and the data structures. At the same time, to be more exact, different
approaches to the types and functions
available are involved.
Keywords:
software, data structure, formalism,
interface.
THE
ANALYSIS OF THE INTERPLAY OF FACTORS OF THE STEADY REGIONAL DEVELOPMENT AND OF
THEIR IMPORTANCE
Macharadze
M.G., Kiknadze M.G., Gasitashvili Z.A. and Mchedlishvili N.F.
Georgian
Technical University
In the article, there is considered a factor area of
regional development which is divided into two subspaces: characteristic
criteria of the regional development and the factor area operating on the characteristic criteria. The objective of the
work is the study of the subspace of the factor area with the aim of defining
the important factors, which are also reflected in the modeling experiment of
the research. In particular, by varying
the important factors in models, it is possible to establish the effective
scenario that will promote the regional development. The methodological bases
of the establishment of the factor area of prime importance are presented.
Keywords: regional development, steady development, factor area.
DEVELOPMENT OF THE SIMULATION MODEL OF FUNCTIONING OF COMPUTER NETWORKS
Kirtskhalia G.T.
Georgian Technical University
The article deals with the simulation of functioning of
computer networks. A particular example is considered. The results of the
experiment at varying different
parameters are presented.
Keywords: simulation, computer network.
LINK BUDGET IN COOPERATIVE COMMUNICATION WITH WCDMA
IMPLEMENTATION
Shavgulidze S.A., Tabuashvili G.O. and Zakradze G.J.
Georgian Technical University
Abstract. Recently cooperative transmission, where users
take advantage of each other’s resources for better overall performance, has
been of growing interest. Users’ cooperation provides uplink transmission
diversity even when mobile units cannot accommodate multiple antennas because
of size constraints. Recently a versatile user cooperation method called the coded
cooperation diversity was introduced by many researchers. This method involvesa
variety of channel-coding methods to implement the cooperation. Different radio
access methods could be used for this implementation. In this work, we
calculate the link budget and cell radii for cooperative communication by using
the WCDMA access method and mini TDMA scenario between mobiles. The computation
was performed for urban, medium-urban and residential areas based on computer
simulation. Two propagation models: Motorola Xlos and Ericsson indoor
propagation model were used for this purpose. The link budget calculation and simulation
results showed the advantage of cooperative communication, which prolongs the cell
radius and improves the receiver sensitivity.
Keywords: coded cooperation, link budget, WCDMA
access method, propagation model.
PREDICTION OF THE SIMULTANEITY OF EVENTS
Kadagishvili L.G.
V. Chavchanidze Institute of Cybernetics, Georgian
Technical University
Abstract. The article deals
with the problem of simultaneity of events when “parallel” events and the
events occurring in non-successive intervals are considered. It is about
simultaneous cognition and recognition of the event to be cognized. For the individual,
the structure of perception in the present
is associated with simultaneity, which is connected with the time moments
during recognition. The study of the hierarchical structure of perception
proved that the field of perception was strictly confined for the human. There are
macro- and microworlds, the definition of wich implies that the viewing
possibility of the fields is in fact impossible for one’s vision. It is proved
that the fact of absolute simultaneity exists and it is real and not
metaphysical. When solving the problem of simultaneity, there is no relative
reality, but there is the objective truth.
Keywords: simultaneous
events, prediction, perception, the conscious, the unconscious.
HEURISTIC
STUDY AND MODELING OF DECISION-MAKING
FOR
FREE MARKET PROBLEMS
Kadagishvili L.G. and Menabde D.A.
V. Chavchanidze Institute of Cybernetics,
Abstract. The article
deals with the model for the free market problems showing the hierarchical
structure of the population’s buying capacity. The experiments were
accomplished by using the heuristic method of decision-making, which allowed working
out the system classification involving the determination tendency and
consideration for the necessity for quasi-demands. When making the decision for
multicriteria problems, the conflict between individual’s “I” and the
information is considered, which could become the reason for social
confrontation..
Keywords: decision-making, heuristic
study, free market, modeling.
THE INFLUENCE OF FINITE RADIO-FREQUENCY PULSES ON THE EVOLUTION OF
MAGNETIZATION IN NUCLEAR MAGNETIC RESONANCE
Kapanadze K.G.
Georgian Technical University
Abstract: The
article deals with the formation of the multi-echo signal generated by focusing
of finite radio-frequency pules under the influene of the dipole magnetic field.
This influence results in significant weakening of the signal, as the evolution
was caused by both the distant dipole field and the
transverse relaxation 
based on the correlation
spectroscopic correction of the asymmetric z-gradient echo-detector. The analysis
of the given signal was carried out, and the magnetization per radio-frequency pulse
was calculated for the first-order dipole field.
Keywords:
radio-frequency pulse,
magnetization, dipole field, nuclear magnetic resonance.
ON THE OPTIMIZATION OF THE COMPATIBILITY FUNCTION OF
ANTENNAS
Asanidze A.V., Chikhladze G.G.,
Meladze V.D., Robitashvili A.G., Kurdadze M.A. and Shengelia M.A.
Georgian Technical University
Abstract: The problem of optimization
of the compatibility function of antennas is considered for the situations when
the radiation characteristic is a priori considered in an analytical form. There
are stated conditions at which either the given antenna does not radiate the
electromagnetic energy within the given space area or the level of emission is
acceptable. Certain examples are cited and
the numerical data of
calculations are presented.
Keywords: antenna,
electromagnetic compatibility, radiation pattern.
ON THE DESIGN AND
FUNCTIONALITY OF THE SINGLE-LAYER DIELECTRIC ANTENNA CASING WITH A
PERIODIC GRATING INSIDE
Kevanishvili G.Sh., Kokrashvili G.T. and Tarielashvili
L.Z.
Georgian Technical University
Abstract. The electrodynamic
operation of the single-layer antenna casing with a periodic grating inside was
studied. It is shown that, if the
grating satisfies the Wood anomaly mode when the grating period is a multiple of the wavelength in the
dielectric, the grating does not affect
the electrodynamic functionality of the antenna casing, and it only
increases its firmness. For this case, we derived the calculation formula of
the transparency coefficient of the
casing. By using this formula, we can calculate the optimal mode of the casing
functionality at the transparency coefficient equal to one.
Keywords: antenna, radome, dielectric
layer, periodical grating.
INVESTIGATION OF SOLAR CELL
TEMPERATURE FOR
DIFFERENT COOLING SYSTEMS AND
CONCENTRATION DEGREES
Avaliani
J.J., Kordzakhia I.I., Avaliani I.M., Chikovani R I. and Khachidze
T.I.
LEPL
Institute OPTICA
Georgian
Technical Univrsity
Abstract. Under
the influence of concentrated solar radiation on semiconductor materials, the
heat-exchange balance is disturbed and difficulties in heat removal emerge.
Polymeric aspherical lenses were used as optical concentrators. Fifteen lenses
with different performance (diameter:
40 to 200 mm; area 1600 to 3000
mm2; total length: 80 to 650
mm; concentration degree: 80 to 1500) were studied. All
lenses-concentrators were manufactured at the Institute “OPTICA”. The lenses
were manufactured from organic block glass PMMA. A unique procedure of recursion transformations was
used for the calculation of designed aspherical profiles. As a result of
multiple measurements, the diagram of the dependence of the temperature on the
surface of the photoelectric cell T(°C) on the degree of concentration K
was constructed, T=f(K). The comparison of the results obtained for the
simulator and the actual photoelectric Ga-As cell showed that, at
concentrations above 100, artificial cooling of photoelectric cells is
necessary. The diagram T=f(K) obtained at the given system of
cooling showed that, a sharp decrease in temperature took place.
The results of the experimental investigation are presented. They can be used while
designing and constructing the real Ga-As PV modules.
Keywords: aspheric solar concentrator, Ga-As photovoltaic cell, cooling, temperature.
CORROSION RESISTANCE OF WELDS OF STEELS TYPES 12x3 CMFUT
(DI-46) AND 12x4 CMFUT (DI-47) IN THE AGRESSIVE ENVIRONMENT OF GAS AND OIL
INDUSTRY
Dadianidze G.A., Sulamanidze A.K. and Khutsishvili M.G.
Georgian Technical University
The article deals with the electrochemical
properties of welds. Welding was performed by different methods: argon arc
welding, welding by using electrodes NIAT-3M with hardening and without it, and
welding by using the electrode designed by the authors. The
electric study of the welds showed that the electrode potentials of the weld
metals and the heat-affected zone under all used methods of welding in sea and
layer waters actually do not differ from that of the basic metal of steel
DI-46. The corrosion resistance of the
welds was assessed by their electrochemical behavior in sea and layer waters.
It was revealed that steels DI-46 and DI-47, and the welds made by using the
electrode with a special coating showed high corrosion resistance in sea and
layer waters.
Keywords: welding,
welds, steel, corrosion resistance, aggressive environment.
DETERMINATION OF THE ELECTRODE DIAMETER AND CURRENT
INTENSITY BY THE THICKNESS OF THE WORKPIECE TO BE WELDED USING A COMPUTER
Kakauridze T.A., Sulamanidze A.K. and Khubuluri Z.V.
Georgian Technical University
The article deals with the problem of using the computer in welding.
Using the computer, the workpiece thickness and electrode diameter.This allowed
controlling the welding regine more precisely.
Keywords: welding,
electrode, current intensity, workpiece thickness.
THE BASIC PRINCIPLES OF THE RESPONSE OF POWER-CONSUMING COMPANIES TO
POWER EMERGENCY SITUATIONS
Zumburidze S.O.
Georgian Technical University
The article deals with the basic principles
of due response of power-consuming
companies to power emergency situations. The measures
that the companies must take to
minimize most effectively the damages emerged in the result of the probable and actual emergency
situations are discussed.
Keywords:
power-consuming company, emergency situation, response.
ACTION OF THE MECHANISM OF CLEAN DEVELOPMENT AND ITS
PROSPECTS IN GEORGIA
Arabidze N.T., Grigalashvili A.Sh. and Arabidze Kh.T.
Georgian Technical University
The scientific and technological progress has determined a
drastic improvement in the quality of life of the considerable part of global
population. Now the humanity faces the threat of development of irreversible
processes caused by the unreasonable consumers’ attitude to the environment,
which would complicate the life for next ganarations. To avoid this threat, the
humanity has woked out the principle of “clean development”.
Keywords: clean development, prospects, environment.
INVESTIGATION OF THE
PROCESSES OF AEROBIC STABILIZATION OF ACTIVE SILT
Zalikashvili Z.O.
and Zalikashvili G.O.
Georgian Technical
University
The article deals with the kinetics of sedimentation of
organic substances. The nvestigation results showed that the concentration of
silt did not affect the process constant. It is inferred that silt can be
assumed stable if the value of its stability is less than 70-80%.
Keywords: active silt, aerobic stabilization, running water.
IMPROVEMENT IN THE EFFICIENCY OF OPERATION OF WATER TREATMENT
FACILITIES BASED ON NEW AUTOMATED INSTRUMENTATION FOR
CHEMICAL
CONTROL OF POTABLE
WATER
Makhashvili K.A., Bibileishvili D.V., Dzagania T.B.,
Semenov R.I., Padiurashvili V.N., Iashvili
N.G. and Kolomikovi S.G.
Georgian
Technical University
Taking into consideration the simplicity, reliability and
high accuracy of the conductometric mthod of measurement of the content of
chemical reagents in the natural water treatment, universal conductometric
instrumentation of high sensitivity and accuracy within 1.0-1.5% was designed
for automated control of dosing the coagulants and flocculants.
Keywords: water treatment, solution concentration, conductometric
method, control, coagulation.
DESIGNING OF THE DEVICES FOR PRODUCTION OF COLLOID SILVER
AND THEIR APPLICATION TO DISINFECTION OF POTABLE WATER
Bibiluri N.Sh., Ckhubianishvili N.G., Andguladze Sh.K.,
Eristavi D.V., Kutsiava N.A.,
Gogishvili A.R. and Kavtarade M.L.
Georgian
Technical University
The article deals with the
concept of designing of the devices for
production of colloid silver with the aim of disinfection of potable water. The
method of obtaining the colloid silver is briefly described, the designs of the
devices are presented.
Keywords:
colloid silver, device, potable
water, disinfection.
THE ROLE OF SPIN-ORBITAL
INTERACTION AT GEMINAL RECOMBINATION OF RADICALS IN MICELLES AND THE HEAVY ATOM
EFFECT
Kokrashvili T.A., Tsirekidze M.A.,Tsulukidze M.P. and Pokleba
A.K.
Georgian Technical University
It is shown that, along with the effect of the internal heavy atom, the effect of the external heavy atom is also observed. The
primary mechanism of the external heavy atom effect in micelles is the acceleration
of intercombination conversion.
Keywords: triplet
state, radical pairs, intercombination transitions.
THE INFLUENCE OF PARAMAGNETIC
ADDITIVES ON THE RECOMBINATION KINETICS OF RADICALS IN MICELLES
Kokrashvili T.A., Tsirekidze M.A., Tsulukidze M.P. and Pokleba
A.K.
Georgian Technical University
It was revealed that the transition from oxygen-free solutions to
air-saturated ones leads to the acceleration of
geminal recombination practically in all radical pairs in the strong
magnetic field. At the same time, the
kinetics of geminal recombination in the
zero field hardly changes in the majority of systems.
Keywords: triplet
state, radical pairs, intercombination transitions.
POLYMERIC
COMPOSITION MODIFIED WITH DIATOMITE AND BORON
Sherozia
V.A., Papava G.Sh., Gurgenishvili M.B., Chitrekashvili I.A., Tabukashvili Z.Sh.
and Papava K.R.
P.Melikishvili
institute of Physical and Organic Chemistry, Iv. Javakhishvili Tbilisi State University
The article deals with the polymeric
composition absorbing thermal neatrons. The composition is based on the matrix
of resol-type thermoreactive oligomers and a natural sorbent - diatomite. Boron
is used as a neutron-absorbing component. The
mechanical and thermophysical properties of composites, and the
absorption ability of thermal neutrons
were studied. It was revealed that the sample that did not contain boron hardly
reduced the flow of neutrons. At the concentration of natural boron equal to 80
wt.%, the density of the neutron flow reduced by a factor of 62.
Keywords: diatomite, polymer, composition, radiation, polymeric
matrix.
MATEMATICAL-CHEMICAL
INVESTIGATION OF SOME HALIDES OF ALKALI- AND ALKALI-EARTH METALS
Lobzhanidze T.E. and
Gverdtsiteli M.I.
Iv. Javakhishvili Tbilisi
State University
Some halides of
alkali- and alkali-earth metals were studied within the scope of the ANB-matrices
method. Two correlation equations of the type “structure-properties” were
derived and investigated. The correlation was good.
Keywords: halides, ANB-matrices method, alkali metals.
THE INFLUENCE OF NANOTECHNOLOGY ON DOSAGE FORMS
Tsomaia I.V., Moseshvili T.J. and Kharbedia T.Z.
Georgian Technical University
The article deals with
the prospects of nanotechnology progress
in the field of medicine. It is noted that the development of nanotechnologies will allow producing new low-cost means of
early diagnostics and treatment.
Keywords: nanotechnology, dosage forms, nanocarriers,
nanoprocesses.
THE INFLUENCE OF NANOTECHNOLOGY ON DOSAGE FORMS
Tsomaia I.V., Moseshvili T.J. and Kharbedia T.Z.
Georgian Technical University
The article deals with
the prospects of nanotechnology progress
in the field of medicine. It is noted that the development of
nanotechnologies will allow producing
new low-cost means of early diagnostics and treatment.
Keywords: nanotechnology, dosage forms, nanocarriers,
nanoprocesses.
TECHNOLOGY OF PRODUCTION OF THE PLUM SAUCE SEMIPRODUCT
Shildelashvili I.I.
Jakob Gogebashvili Telavi State University
The article deals with the technology of production of the plum sauce semiproduct.
Some plum cultivars, namely Spring
Swallow, Uleveli and Zarati, showed
the properties that made them the best
raw materials for production of the sauce semiproduct. The cost of raw
materials for the described semiproduct is low, as the culture of plum does not
require agrotechnical measures or chemicals and thus yields environmentally
clean products. It is characterized by high profitability. It is noteworthy
that the sophistication of the methods of processing of low-cost raw materials is
quite topical, as it is of primary importance for the progress of food industry
in Georgia. Thus, the plum sauce semiproduct is a national Georgian
environmentally safe product. After dressing, it is used as a sauce for meat, vegetables or fish.
Keywords: plum, sauce,
semiproduct, technology.
PHYTOCHEMICAL ANALYSIS OF THE CANADA PLUM
SPREAD IN GEORGIA
Tsomaia I.V. and Bachiashvili M.M.
Georgian Technical University
The phytochemicl composition of Canada plums growing in
Georgia was studied. The subjects of investigation were Canada plums growing in
Ambrolauri and Gori Regions. Their ash, dried substance, humidity and sugar
percentage were studied and compared. The use of preparations containing the
plums under study in folk medicine is discussed. The useful properties of such
preparations and their applications are described.
Keywords: Canada plum, phytochemical properties, volatile
substances, pectins, fatty oil, phytonocides.