Summary
On the kinetics of dynamic
quantum systems interacting with the boson field: Part II. Evoluiton equations
for correlation and Green functions
Kotiya B.A.
Georgian Technical University
By
the method of ordered operators, new exact generalized quantum evolution
(kinetic) equations were derived for equilibrium two-time correlation functions
and Green functions for quantum dynamic system interacting with the boson
(phonon) field (thermostat). (The method based on the use of chronological and
antichronological T-products is developed).
The
random phase approximation (RPA) is not used in derivation of these equations,
and the technique of elimination of boson (phonon) amplitudes is of
considerable importance. The collision integrals of these equations contain
both the members describing the evolution of real correlations and the
evolution members of initial (precollision) correlations determined by the
interaction of the subsystem with the boson thermostat at the initial moment of
time. Various alternative approaches to the analysis of the dynamic subsystem
behavior based on the derived equations are proposed.
To the
second-order approximation of the theory of perturbation in relation to the
interaction of the subsystem with the thermostat, generalized quantum kinetic equations
with eliminated boson amplitudes were derived for correlation functions from
dynamic variables of the subsystem of both Markovian and non-Markovian type,
which contain explicit evolution members of precollision correlations.
There
is also discussed the application of the derived generalized quantum kinetic
equations for equilibrium two-time correlation functions in various models of
quantum dissipation systems of the physics of condensed media – the
theory of polaron, the theory of motion of quantum Brownian particle etc.
Keywords: ordered operators,
correlation functions, Green functions, generalized kinetic equations.
SUMMARY
TRANSMISSION
OF THE PLANE ELECTROMAGNETIC WAVE THROUGH THE RADOME SANDWICH WITH THE PERIODIC
GRATING
Asanidze
A.V., Kevanishvili I.G., Kotetishvili K.V., Chuntishvili I.I. and Chikhladze
G.G.
Georgian Technical University
An electrodynamic
problem of transmission of the plane electromagnetic wave through the
dielectric sandwich with the periodic grating, placed at some distance from the
layer in the lighted area, is strictly solved. The transmission coefficient of such a system
for the main wave is calculated. It is shown that, at the points of
Wood’s anomaly, where the ratio between the period of the grating and the
wavelength is a natural number, the presence of the grating does not affect the value of the transmission
coefficient of the insulated dielectric sandwich.
Keywords: electromagnetic
plane, wave, radome, grating.
SUMMARY
scattering of wave H10
on the system of cylinders located in different cross-sections of a rectangular
waveguide
Dekanosidze Sh.V., Kevanishvili I.G. and Kekelia G.V.
Georgian Technical University
A
problem of scattering of the plane electromagnetic wave on the system of two
metallic or dielectric cylinders located in different cross-sections of a
rectangular waveguide in parallel with its narrow walls is considered. Using
the method of mirror images and realizing the continuity and smoothness
conditions of the cylinder surfaces with invoking the electrodynamic analogy of
the Green theorem, a dial infinite set of linear algebraic equations in
relation to unknown coefficients of multifield spectra scattered by each
cylinder was obtained. The analysis of metric elements and free terms showed
that the obtained set of equations is the second-order Fredholm one. Therefore
it was computed by the reduction method with the help of a computer.
Keywords: rectangular
waveguide, cross-section, system of
cylinders, wave scattering.
Summary
ELECTRODYNAMIC
ANALYSIS AND CALCULATION OF THE ANTENNA RADOME FORMED OF THE PERIODIC GRATING
AND DIELECTRIC LAYERS
Kevanishvili
G.Sh., Kevanishvili I.G., Kotetishvili K.V., Chikhladze G.G. and Chuntishvili
I.I.
Georgian
Technical University
The
electrodynamic analysis of the antenna radome formed of two tightly hold
dielectric layers with different dielectric permittivity, one of them containing
the periodic grating formed by two infinitely long conductive cylinders, is
suggested.
The
conditions at which the power of the electromagnetic field passed through the
radome reaches its maximum value, which,
in its in turn, provides the optimal electrodynamic working regime of the
radome, are investigated.
Keywords: radome,
dielectric layer, grating, electrodynamic analysis.
SUMMARY
ELECTRODYNAMICS
OF THE CYLINDRICAL ANTENNA
RADOME
WITH THE COAXIAL WIRE GRATING
Kevanishvili
G.Sh., Kevanishvili I.G., Kotetishvili K.V., Chikhladze G.G. and Chuntishvili I.I.
Georgian
Technical University
The
theory of the cylindrical sandwich radome is stated for the case of arrangement
of the coaxial metal periodic grating within the dielectric layer. The
analytical relations for calculation of the geometric parameters of the radome
at given values of the relative dielectric permittivity of the layer and the
wavelength are derived.
Keywords: radome,
antenna, dielectric layer, transmission coefficient.
Summary
Radiation patterns of two dielectric concentric
spheres excited by a plane electromagnetic wave
Dekanosidze
Sh.V., Zamtaradze G.G., Kvatadze Z.A., Kekelia G.V. and Kipiani D.O.
Georgian
Technical University
A problem of construction of the radiation
pattern of two dielectric concentric spheres excited by a plane electromagnetic
wave is considered. It is demonstrated that the absolute maximum of the
radiation intensity falls basically on the direction of the geometric shadow,
but at specific parameters the deflection from those direction takes place.
Keywords: radiation pattern, plane wave, dielectric
concentric sphere, excitation.
SUMMARY
Near fields of diffraction of
two cylinders located in one cross-section of a rectangular waveguide
Dekanosidze Sh.V., Kvatadze Z.A. and Kekelia G.V.
Georgian Technical University
The
near fields of diffraction of a plane electromagnetic wave on two cylinders
located in one cross-section of a
rectangular waveguide were studied. The lines of equal amplitudes and phases
were constructed. Those lines give an estimate of the field distribution in the
waveguide, show the location of local and absolute maximums (minimums), help to
find the vortex zone of electromagnetic energy, and allow the determination of
the direction of wave motion.
Keywords: rectangular
waveguide, near fields of
diffraction, cross-section lines of equal amplitudes.
summary
analysis
of the patterns of the scattered field at diffraction of the plane
electromagnetic wave being incident at an angle to the dielectric cylinder axis
Dekanosidze Sh.V., Kekelia G.V.
and Kabisashvili D.G.
Georgian Technical University
The
analysis of the patterns of the scattered field of the plane electromagnetic
wave being incident at an angle to the dielectric cylinder axis was performed
at different permittivity, relative radii of the cylinder and angles of
incidence. The investigation results are presented.
Keywords: pattern, angle of
incidence, plane electromagnetic
wave, dielectric cylinder, scattered field, analysis.
SUMMARY
A method of determination of
interval and maximum reliability indices
Mikadze I.S.,
Arabuli N.V. and Chachua D.R.
An original method of determination of interval and
maximum indices of availability of complex units (equipment, devices, elements
etc.) is suggested. A mathematical
model of the operation of the service system (of devices, data transmission
channels etc.) with built-in instrumentation control was constructed. The presented model
consists of two parts: basic and reference. The indication of serviceability of
the basic part is the signal of a certain level at its output which is
continuously detected by the supervisory
equipment. The supervisory equipment failures are checked periodically.
If the supervisory equipment failure has preceded the basic element failure, those
failures can be revealed and eliminated only at periodic checks. The flows of
failures of the supervisory and basic equipment obey the Poisson law.
Keywords: reliability index,
distribution function, data transmission channel, service system.
SUMMARY
Root locuses in the
theory of catastrophes
Kotrikadze
O.G.
The analysis of the specific features of potential
functions with the help of root locuses is considered by the example of
standard functions of deformation, the fold and “the gather”, and
nonstandard deformation. The locuses were constructed, the double critical
points and the extreme point of potential functions were determined. The
discriminant set of deformation parameters
was found. The root locuses constructed for catastrophes of the fold and
“the gather” are universal. The plane of deformation parameters is
divided into domains by homomorphic graphs of the potential function.
Keywords: theory of catastrophes,
root locus, fold, collapse, potential functions.
Summary
analysis of structural robustness using root locuses
Kotrikadze
O.G.
The procedure of synthesis of the correcting device
(CD) is considered, and the causes of inaccuracy of the obtained results are
shown. For maintaince of the desired stracture of the CD, the application of
root locuses is suggested. The efficiency of application of the suggested
method is demonstrated by the example of the differentiating RC circuit. The
values of the RC circuit parameters were determined with account for total
internal resistance of the input signal source.
Keywords: structural robustness,
root locus, correction, robustness compensation.
SUMMARY
Analysis of the catastrophe “dovetail” Using root
locuses
Kotrikadze
O.G.
The analysis of the “dovetail”
catastrophe was performed using root locuses of the derivative potential
function. The real double roots and the values of deformation parameters at
those points were determined. A family of root locuses at changes in normed
parameters was constructed. The plane of deformation parameters was divided
into domains, in each of which the graphs of the potential function were
homomorphic.
Keywords: theory of catastrophes,
dovetail, root locus, critical point, extremum.
Optimal
design of the bent-stretched circular plate with consideration for the
conditions of rigidity and durability
Beridze T.Sh.
Abstract.
The method of
calculation offered in this paper differs from the existing ones by the fact
that it allows accomplishment of calculations with given conditions of rigidity
and durability with high accuracy. The optimal design of the bent-streched
circular plate is presented.
Keywords: circular plate, optimal design, bending,
rigidity, durability.
Summary
On the
problem of designing of intellectual systems based on microcontrollers
Dadunashvili
The designing technique of intellectual systems on
the base of microcontrollers is considered by the example of direct current engine
control in the automobile antiskid device. The realization of the design
involves the following stages: the statement and the analysis of the task
solved by the system, its engineering interpretation and the development of the
block–diagram of the algorithm.
Keywords: microcontroller,
intellectual system, algorithm, graph.
A special case of
the arrangement of cuts
Pailodze N.R.
Abstract: The offered procedure of the account of cuts in a plate is the
generalization of the procedure of the account of cuts in a single-layered
plate, and it is based on introduction of special discontinuous functions,
singular functions and delta functions into the initial differential
geometrical dependences connecting the displacement vector components and the
components of tangential and bending strain.
Keywords: single-layered plate,
arrangement of cuts, special case, special functions.
Obtaining of the
Nano-Structured Ultrathin Membrane for the Purification of Liquid Gallium from
Impurities up to 8N
Kutelia E.R., Tsivtsivadze D.M. and Kutelia B.E.
Abstract. In this work there are
presented the results of complex investigation of the morphology, the chemical and phase composition, and the membrane features of the nanostructured ultrathin oxide skin obtained at self-organization in the process of oxidation of the concentrationally
laminated surface layer (~1nm) of the metal melt by the example of
Keywords: ultrathin, membrane, purification, nanostructure, liquid gallium.
THE
STRUCTURE OF TRANS-DIAQUA-BIS(3-HYDROXYBENZOYLHYDRAZINE)COBALT(II)
NITRATE TRIHYDRATE [Co(С7Н8О2N2)2(OH2)2](NO3)2∙3H2O
Miminoshvili
E.B., Miminoshvili K.E., Beridze L.A., Zazashvili S.R. and Ediberidze D.A.
There was studied the structure of compound
Co(m-HBH)2(NO3)25H2O, where m-HВН
= С7Н8О2N2 (3-Hydroxybenzoylhydrazine);
(а=56,150(6); b=20,045(2); c=7,893(2)Å, Fdd2,
Z=16, R(F)= 0,056).
The compound is formed of complex cation [Co(m-HBH)2(OH2)2]2+,
two anions NO3- (one of them is disordered) and three water
molecules. The geometric parameters of hydrogenic bonds have been
determined.
Keywords: complex compounds,
structure, hydroxybenzoylhydrazine, carbonic acid, hydrazide.
Summary
Investigation of the reaction of electron and hydrogen atom transfer
between triplets and diphenylamine
Kokrashvili
T.A., Shengelia M.A. and Kokrashvili A.T.
The results of estimation of the lifetime and radii
of ion-radical pairs formed at quenching of the triplets of substituted
p-benzoquinones with diphenylamine are presented. The rate constants of
electron and hydrogen atom transfer at quenching of the triplets of substituted
p-benzoquinones with diphenylamine decrease as the electron-acceptor ability of
quinone rises.
Keywords: triplet state, hydrogen
atom transfer, electron, p-benzoquinone, quenching.
Summary
The effect of solvent viscosity on the kinetics of quenching of the
Kokrashvili
T.A. , Shengelia M.A. and Kokrashvili A.T.
The solvent viscosity dependence of the rate
constants of quenching of the triplet state of anthanthrone by aromatic donors
of electron and hydrogen atom was obtained. The diffusive and kinetic
elementary stages of the quenching reaction were revealed, and the rate
constants of these stages were determined. The rate constant of hydrogen atom
transfer from phenol to the triplet of anthanthrone in a complex with the
hydrogen bond decreased at introduction of electronegative substitutes into the
phenol molecule.
Keywords: triplet state, quenching,
anthanthrone, solvent viscosity, kinetics.
SUMMARY
AUGER ANALYSIS OF THE
NANOCRYSTALLINE Ge:GeO2 FILMS
Jishiashvili
D.A., Eristavi B.G., Gobronidze V.V., Shiolashvili Z.N., Jishiashvili A.D.
and Makhatadze N.K.
Auger electron spectroscopy was used to investigate
the Ge:GeO2 film containing oxidized (Ge4+) and elemental
(Ge0) germanium nanocrystals. The quantitative analysis was
performed using the reference sample consisting of the Ge and GeO2
films deposited side by side with a sharp linear edge. The Auger signals of Ge
L3M45M45 were detected by scanning the surface of the reference
having a rectangular form. The Ge/GeO2 ratio in the analyzed
rectangular sample was previously changed by shifting the reference in the
direction orthogonal to the electron beam. The calibration curve connecting the
Ge0 and Ge4+ related peak area ratios with the real Ge
and GeO2 ratios in the reference sample was plotted. The Ge0/Ge4+
ratio measured for the Ge:GeO2 film of unknown composition was
compared with the calibration curve, and the real ratio of Ge/GeO2
was determined. It was established that the amount of Ge could be measured with
the accuracy of 3-4% for the films containing at least 15 at.% of Ge0. At lower Ge0
content, the inaccuracy increases up to 6-7 % due to the increased in the
density of atoms at the Ge nanocrystals.
Keywords: nanocrystalline films,
germanium, germanium oxide, Auger analysis.
SUMMARY
WATER TREATMENT OF THE
NANOCRYSTALLINE Ge:GeO2 FILMS
Jishiashvili D.A., Kutelia
E.R., Gobronidze V.V., Shiolashvili Z.N. and Makhatadze N.K.
The phase-separated Ge:GeO2
films, consisting of the amorphous GeO2 matrix and Ge nanocrystalsб,
were produced by magnetron sputtering. After water treatment of these layers,
the nanoporous films were formed. For the film containing 13
at.% of the excess germanium (Ge0), the average pitch sizes of 0.6 mm and
the pore length of 15 mm were
obtained. The etching rate of the film depends on the concentration of Ge0
and it decreases down to 8 nm/min for the film containing 25
at.% Ge0. The formation
of the nanoporous structure in the water-treated film is caused by the
segregation of phases due to the decomposition reaction GeO=Ge+GO2,
which takes place during the film deposition.
Keywords: nanocrystal, nanoporous
film, germanium dioxide, etching rate.
Summary
on a photon structure based on circular cylindrical capillaries
Chanturia G.F.,
Gaprindashvili H.I., Karakozov K.G., Kutaladze L.M., Tsaturov A.M.
and
Tatarashvili R.A.
A photon structure based on thin tubular cylindrical
rods (capillaries) was obtained, and its functional capabilities were studied.
The mechanism of operation of the photon structure is discussed.
Keywords: cylindrical lens, photon
structure, light diffusion.
Summary
The effect of thermodynamic parameters of the
process of hot molding on the properties of sintered metallic compositions
Loladze N.T., Tserodze M.P., Dzidzishvili Yu.G., Grdzelishvili G.Yu.,
Sharashenidze G.G., Tserodze O.M. and Myakisheva A.I.
The effect of pressure on the
processes of liquid-phase and solid-phase sintering in the Gu-Sn-Ni and Fe-Sn-X
systems under the conditions of hot molding was studied. A new design of press
mold provided a significant increase in the working pressure of the process (up
to 1200 kg/cm2). A decisive role of the pressure in the formation of
metallic composition structure at solid-phase sintering was revealed.
Keywords: hot molding, metallic composition, press mold,
sintering, thermodynamic parameters.
SUMMARY
Efficiency of the deformation, the moment and the capacity at
rolling in hexahedral and
Vashakidze
N.A. and Vashakidze G.A.
A new expression for determination of the effective
factor of deformation at rolling of rectangular strips with rectilinearly convex
side surfaces in hexahedral passes was derived.
The calculation formulae for determination of the
moment and the capacity of rolling were also derived for the case of changes in
the shape of rectangular strips with convex side surfaces in case-square and
hexahedral passes with tension.
Keywords: rolling, deformation,
efficiency, rolling moment, rolling capacity, hexahedral pass, case-square
pass.
SUMMARY
Determination
of contact pressure at rolling in
case-square and hexahedral passes with tension of the strip
Vashakidze А.S.
and Vashakidze G.A.
The calculation formulae of specific and complete
contact pressure at rolling of rectangular strips with rectilinearly convex
side surface with tension in case-square and hexagedral passes were derived.
The suggested expressions account for the effect of
the shapes of the strip and the
pass on the parameters of the rolling process.
Keywords: rolling, contact pressure,
rectangular strip, case-square pass, hexagonal pass.
SUMMARY
Nontraditional technology of fabrication of solar cell elements
Kekelidze
N.P., Tserelov A.A., Tserelov R.A., Mgebrishvili N.N. and Ermolov A.G.
Iv.
There was developed the technology of fabrication of
solar cell elements which differs from the traditional one by its simplicity,
elimination of complex, power-intensive equipment, and shorter production time.
As a result of implementation of the developed technology, reduction of the
solar cell cost by 50% is expected.
Keywords: solar cell, production
technology.
Summary
Calculation
of thermodynamic parameters of
ozone friendly refrigerants in the saturation area
Kekelidze N.P., Suladze S.B.,
Kvinikadze Z.V. and Davitaya Z.F.
Iv.
A relative method was used for calculation of the
thermodynamic characteristics of new ozone friendly refrigerants. As the
reference substance, R22 was chosen. The temperature dependence of the saturated
vapor pressure was deduced by interpolation of the empirical data for the reference
substance. The described method was tested on four alternative substances
having different properties. The comparison of the obtained results with the
data of other authors is given. It confirms that, for calculation of the
thermodynamic parameters of new substances, it is enough to know their critical
pressure and critical temperature, and that the described method works with
high accuracy in the entire range of saturated vapor, including the field of
the critical point.
Keywords: refrigerants,
thermodynamic characteristics, ozone, saturation area, calculation.
SUMMARY
ANALYSIS OF TWO DIGITAL
ALGORITHMS FOR REALIZATION of PID
controllers
Jokhadze P.D.
The comparative analysis of two methods of
proportional-integral-derivative (PID) controllers realization was carried out,
The advantages and drawbacks of these methods are shown. The simulation results
are given at maximum optimum parameters.The simulation was conducted in the
Simulink environment, using the Mathlab Software.
Keywords: digital algorithm, PID
controller, realization, analysis.
SUMMARY
CRYPTOGRAPHIC ALGORITHM FOR
ENCODING of THE TRANSMITTED DATA
Kutsiava V.A., Diakonidze K.D.,
Bochikashvili P.N. and Jokhadze P.D.
There is considered a cryptographic algorithm for
data block encoding, in which the original principle of bits displacement and
diffusion is used. The algorithm is symmetric and allows encoding the
512-bit-long blocks using a random key of the same length. In the formation of
the key, the encoded data take part. The proposed algorithm is robust and
fast.
Keywords: data transmission, encoding,
cryptographic algorithm.
SUMMARY
APPLICATION OF
FUZZY LOGIC IN CONTROLLERS
Jokhadze P.D.,
Bochikashvili P.N. and Kobakhidze F.D.
There is discussed a controller with digital
proportional-integral-derivative control (PID) and its self-adjustment
algorithm used for controlling the processes in the objects with initially
unknown variable parameters.
The principle of the controller adjustment based on
fuzzy-logic technology, where the dynamic adjustment of parameters reduces
static errors and eliminates transients caused by casual noise, is
presented. The considered
algorithm is simulated with applied software Mathlab..
Keywords: controller,
proportional-integral-derivative control, unknown parameters, fuzzy logic.
Summary
The Sloping shell of double curvature, freely supported on four
sides, under the action of radial load
Bibiluri M.V.
A theory of computation of sloping shells of double
curvature is suggested. The proposed theory is an attempt to eliminate complex,
awkward transformations and to develop a more convenient and easier
computational scheme for practical engineering computations.
Keywords: sloping shell, double
curvature, radial load, computational scheme.
Stability
of three-layer plates with cuts and holes
Kipiani G.O., Sokhadze A.P. and
Lezhava G.K.
Abstract. The method of calculation of
three-layer panels with cuts and holes, enabling one to take into account the effect of different
peculiarities on the distribution
of strains and moments with good accuracy, is presented.
Keywords: plate, tree-layer panel,
cut, hole, stability, filler.
Summary
Determination of the reliability characteristics of submarine
Junctions of power system mains
Gurgenidze
D.R.
The problem of determination of the reliability of
submarine junctions of power system mains is considered. Based on Markovian
processes, a set of Kolmogorov differential equations to be solved by the
analytical method was derived. The obtained relations allow the determination
of the time intervals between repairs of the submarine junctions of power system
mains.
Keywords: power systems, main,
submarine junction, reliability.
Summary
Optimal arrangement of centrifugal Pumps of the pipelines of power
systems
Namgaladze
D.P. and Gurgenidze D.R.
Based on the systematic approach, the optimal
arrangement of any number of main centrifugal pumps servicing a power system is
considered. On the base of combinatory reliability and the method of spatial
probabilities, in a particular
situation, there is compiled a list of all possible incompatible logic
probabilities, by adding up of which a total or a partial probability of
non-failure operation of the system is obtained.
Keywords: power system, pipeline,
centrifugal pump, optimal arrangement.
Summary
Determination of the path of oil stream spilled in the estuary at
damages of energotransport facilities
Gurgenidze
D.R.
There is presented a procedure of determination of
the path of oil stream spilled in the estuary at damages of energotransport
facilities, in particular, at transportation of oil by trestle pipelines, tank
cars etc. The path of the oil spilled in the estuary was determined by the
numerical method using modified mathematical software Maple 95. The difference
between the estimation results and the natural data was within 15-20%.
Keywords: hydroecology, estuary,
energotransport facilities, oil, damages.
Summary
On an application of the quadratic transformations for solution of
positional problems
Khatiskatsi
I.E. and Metreveli M.G.
A positional problem of applied geometry was solved
by using quadratic transformations. Such problems arise in machine-building at
designing parts and housings.
Keywords: positional problem,
quadratic transformation, applied geometry, designing.
SUMMARY
On
the issue of optimization of requests and
materialized notations in the oracle database
Magradze E.I.
and Abulashvili Kh.T.
Some issues of construction of the architecture of
the modern analysis information system for production processes are considered.
Materialized notations are important means for increasing the capabilities of
databases and decision-making support systems. One materialized notation can be
used by many interrelated requests. It is demonstrated that, in the environment
where data are actively read, the materialized notations prove themselves by
reducing the request servicing time and saving the resources needed for actual
execution of the request.
Keywords: database, Oracle, program
language, SQL, materialized
notation, optimization of requests.
Summary
Experimental investigation of The temperature conductivity coefficient
of soya products with consideration for temperature and humidity effects
Sadagashvili
E.Z.
The procedure of investigation of the temperature
conductivity coefficient of soya products depending on the product temperature
is described. The plot of the temperature conductivity of soya products against
the product temperature is given. The related empirical formulae have been
derived.
Keywords: soya products,
temperature, humidity, temperature conductivity
SUMMARY
THE TENDENCIES
OF DEVELOPMENT OF IMAGE CODING METHODS
Murjikneli
G.G., Khoshtaria K.A. and Abzianidze N.E.
The issues of video compression efficiency are
considered using the comparative analysis of image coding methods based on the adopted standards. The
further improvement of coding characteristics can be achieved using advanced
versions of Wavelet-transform for intracoding and motion compensation methods
adaptive to the image content - for interframe prediction.
Keywords: image coding, compression
efficiency, intracoding, interframe prediction.
Summary
Some peculiarities of the construction of telecommunication networks
on the base of ATM technology
Murjikneli
G.G., Robitashvili A.G., Tsiklauri D.A. and Vekua T.A.
The issues of construction of telecommunication and
computer networks on the base of the ATM (Asynchronous Transfer Mode)
technology are considered. The specific features of such networks are
described.
Particular emphasis has been placed on the prospects
for development of the ATM-based networks with consideration of the worldwide
experience. It is demonstrated that the ATM concept has formed and has quickly
found the favor of the majority, because its roots stretch deeply into general
development of the telecommunication and computer networks.
Keywords: telecommunication network,
computer network, ATM, B-ISDN.
SUMMARY
The analysis of the possibility of increasing the power
of the high-performance Computer cluster using new network technologies
Kamkamidze
E.K., Mayer A.A. and Mikiashvili N.V.
There are considered the
basic problems of selection of communication technologies at development of the High-Performance Cluster. The
ways of increasing the performance of the computer cluster by using new
communication technologies and optimum distribution of the network load are
described.
Keywords:
computer cluster, high performance, communication network.
SUMMARY
Optimal control of the transient regimes of power systems