SUMMARY
FINDING OF THE MINIMUM UPPER ESTIMATE FOR THE
ERROR PROBABILITY OF A RESTORING NEURON BY TWO METHODS
Prangishvili A.I., Namicheishvili
O.M. and Gogiashvili M.A.
Georgian Technical University
St. Andrew the First-Called Georgian University of the Patriarchate of Georgia
The article deals with obtaining of the minimum
upper estimate for the error probability of a restoring neuron (or a decision neuron). To this
effect, we use a two different methods. The obtained results ware identical in
both cases.
Keywords: formal neuron,
decision neuron, restoring neuron, upper estimate, error probability, Laplace
transform, course-of-value function.
SUMMARY
THE AGENT-ORIENTED APPROACH AND THE AGENT SYSTEM
THEORY
Shonia O.M., Kaishauri T.V., Kartvelishvili I.Sh.
and Kolbaia L.T.
Georgian Technical University
The article deals with the means
of realization of the system of visualization and analysis of the
interconnections between normative legal documents – the agent-oriented
approach. The description of the technology of this system and relevant
explatations are discussed. The review of agent architecture, classification,
models and applications are given.
Keywords: normative legal documents, agent-oriented
approach, agent system theory, potentially hazardous situation.
Space-time coding in
MIMO systems
Kvirkvelia Sh.V.
and Beridze J.L.
Georgian Technical University
Abstract. With the
help of program MatLab, MIMO channels with STBC for
the Wimax standard model by using of BPSK, QPSK,
QAM16, 64, 128, 256 types of modulation are estimated. The characteristics of
spectral efficiency and the error rate were obtained. It is shown that, at high
SNR, the use of QAM modulation is the most efficient.
Keywords: space-time coding, MIMO system, MatLab, modulation.
SUMMARY
LABVIEW IN THE STUDY OF FRACTAL
PROPERTIES OF NETWORK TOPOLOGY AND RANDOM PROCESSES
Azmaiparashvili Z.A., Otkhozoria N.K.,
Otkhozoria V.K.,
The article deals with the application of LabVIEW medium to the study of fractal properties of
network topology and random processes. The investigation results showed that
• The fractal dimension was less than the
Euclidean dimension Dc< DE, where DE is the
Euclidean dimension DE=2.
• As 
increases, the
fractal dimension (Dc→ 0) of the set of points decreases. This
means that the set of points as if collapse into a big single point. As ( → 0)
decreases, the dimension of the set of points increases tending to DE.
• The realization of composed algorithms and
modeling in the LabVIEW medium made the computation
of the fractal dimension much simpler.
The results of estimation of the fractal
dimension were obtained by the example of modeling of Brownian motion.
Keywords: fractal dimension, network
topology, random process, LabVIEW.
REview of
Khitarishvili G.I.
Sumavision Technologies Co., Ltd.
Abstract.
The
article represents a review of mobile TV Standards approved in the world.
Keywords: Digital Broadcasting,
DVB-T2, MediaFLO, ISDB-T, DVB-H, T-DMB, DAB.
SUMMARY
OTT (OVER THE TOPTV) TECHNOLOGY AND IT’S
ADVANTAGES
Khitarishvili G.I.
Georgian Technical University
The article deals with
improvements made to OTT (Over the TopTV) technology. These improvements meet
current requirements and are consumer-oriented. The advantages of this
technology are discussed.
Keywords: Over the TopTV, Internet Protocol Television.
SUMMARY
ELABORATION OF THE LOGISTIC MODEL FOR DETERMINATION OF
THERMOPHYSICAL PARAMETERS FOR OPERATION OF THE EVAPORATOR-HOMOGENIZER
Iosebidze J.S., Chkheidze A.P., Gelashvili O.G., Kiguradze O.D., Khutsishvili G.M., Abramishvili
G.S. and Zurabishvili L.A.
Georgian Technical University
The article deals with the
elaboration of the logistic model, which makes possible the theoretical
determination of the values of characteristic parameters (heat transmission
coefficient, heat capacity etc.) of thermophysical
processes taking place in the course of operation of the evaporator-homogenizer.
Keywords: logistic model, thermophysical parameters, evaporator-homogenizer
IMPROVEMENT IN THE DURABILITY OF MOTOR CAR
TRIBOUNITS BY
VIBROSTIMULATION OF TRIBOSYNTHESIS OF GRAPHITE-DIAMOND SURFACE
STRUCTURES
Iosebidze J.S., Chkheidze
A.P., Kupatadze D.O., Kutelia
E.R., Abramishvili G.S. and Mgebrishvili Kh.A.
Georgian Technical University
Abstract: It is shown at the conceptual and experimental
levels that, in case of application of the oil containing amorphous nano-dispersed carbon (inside the particles of which are
located the clusters of ferromagnetic iron), vibrostimulation
could play the role of a creative factor, promoting
the tribosynthesis of tribologically
high-efficient secondary surface structures including diamond nano-particles. This will reduce the damage to tribounits caused by pitting and other kinds of wear.
Keywords: friction, wear, oil, tribosynthesis,
graphite-diamond structure, vibrostimulation.
SUMMARY
STUDY ON THE OPPORTUNITY OF IMPROVEMENT OF THE
DURABILITY OF TRANSMISSION UNITS BY ADDING THE NEW-TYPE ADDITIVE TO AUTOMOBILE
OILS
Iosebidze J.S., Padgurskas I.A., Kupatadze
D.O., Apakidze T.M., Abramishvili
G.S., Zurabishvili L.A. and Khvedelidze
M.T.
Georgian Technical University
Alexandras Stulginkas University, Kaunas, Lithuania
The article deals with the
investigation results on the effect of new-type additives based on amorphous nanodispersion carbon on the parameters of oil that
determine the durability of automobile transmission units. According to the
obtained data, the additive of the given type provides significant improvements
in wear-resistant, antiscuffing and antipitting properties of the oil. Hence, the obtained oil
surpasses well-known commercial transmission oil sorts.
Keywords: amorphous nanodispersion
carbon, transmission oil, friction test machine, wear resistance, scuffing resistance,
pitting resistance.
SUMMARY
ELABORATION OF THE MODEL OF THE LOGISTIC SYSTEM:
“ECOLOGICAL COMPATIBILITY OF THE AUTOMOBILE GAS DIESEL–PROPERTIES OF NATURAL
PRESSURIZED GAS”
Iosebidze J.S., Julien J., Aladashvili D.J., Gelashvili O.G.,
Abramishvili G.S. and Zurabishvili
L.A.
Conceptual relations between the ecological
indices of the automobile gas diesel and the characteristics of natural
pressurized gas were determined. On their basis, a logistic system was elaborated,
which allows us to develop the optimal ways for enhancement of ecological
compatibility of the gas diesel.
Keywords: automobile, gas diesel, ecological
compatibility, logistic system.
SUMMARY
THE IMPACT OF THE STRUCTURE OF
BASIC COMPONENTS ON THE PROPERTIES OF SEALING AND SCREW LUBRICANTS
Farzaliyev V.M., Mamedov S.A., Fatalizade F.A., Guseinov I.Sh. and
Ladokhina N.P.
A. Kuliev Institute of Additive Chemistry, National Academy of Sciences
of Azerbaijan
For development of highly
efficient plastic lubricants insoluble in oil and gas, as disperse media the
following vegetable oil was used: castor oil, soapstok, colophony and cotton
oil. The cotton oil used for this purpose was produced by oxidation with
hydrogen peroxide in the presence of oxygen. It was revealed that the acidity
of the oxidized cotton oil hardly changed as the concentration of hydrogen
peroxide increased. The viscosity of cotton oil increased when the amount of
hydrogen peroxide increased up to 35%, whereas further increase in the amount
of hydrogen peroxide hardly changed the oil viscosity. The IR spectra of
oxidized cotton oil showed the presence of a hydroxyl group, which indicated
that hydroxyl added to unsaturated bonds. The impact of the amount of the
cotton oil oxidized with 20% hydrogen peroxide on the dropping point of the
lubricant was studied. The quantity of 20% of hydrogen peroxide was considered
to be optimal. It is inferred that the obtained lubricants can be used as
sealing and screw ones.
Keywords: lubricants, basic components, cotton oil,
hydrogen peroxide, dropping point.
THE
IMPACT OF POROUS STRUCTURE ON THE TRIBOLOGICAL PROPERTIES OF FRICTIONAL POLYMER
COMPOSITES
Gventsadze L.D., Kutelia E.R. and Gventsadze D.I.
Republican
R. Dvali Institute of Machine Mechanics
Abstract.
The
article deals with the role of porous structure during the development of
frictional polymer composites. It is shown that the porosity, represented by
the component having either artificial or natural pores, anyway improves the tribological properties of frictional polymer composites:
the stability of their friction characteristics improves, the metal counterbody wear decreases and the service properties of
items improve in general. The authors studied the positive effect of
introduction of natural nanoporous components,
diatomite and clinoptilolite, into the composition of
developed composites on their wear and friction characteristics.
Keywords:
porous
structure, frictional composite, wear, friction, wear rate, friction
coefficient.
SUMMARY
DIELECTRIC
COATINGS IN THE TECHNOLOGY OF SEMICONDUCTOR DEVICES AND INTEGRATED CIRCUITS ON
EPITAXIAL GALLIUM ARSENIDE STRUCTURES
Kalandadze G.D., Mikirtichyan A.L., Pavliashvili
T.I., Sanikidze L.P., Sakharova
T.B. and Tutunjyan A.A.
Research-Production
Complex (RPC) “Electron Technology”, Institute of Applied Semiconductor
Technology, Iv.
Javakhishvili Tbilisi State University
Institute of Micro- and Nanoelectronics
The paper deals with different
methods of formation of dielectric layers in the technology of semiconductor
devices and integrated circuits (ICs) on epitaxial GaAs
structures. Comparative characteristics of the obtained SiO,
SiO4, SiO2, Si3N4 and polyimide
PI 2545 dielectric coatings are presented. Their advantages and disadvantages
for various applications are discussed.
Keywords: dielectric coatings, gallium
arsenide, polyimides, epitaxial structures.
SUMMARY
DEFECT ENGINEERING IN THE SILICON
P-N JUNCTION TECHNOLOGY
Tigishvili M.G., Gapishvili N.G., Gulyaev
R.G., Jibuti Z.V., Dolidze N.D.,
Khuchua N.P. and Melkadze
R.G.
Research and Production Complex (RPC)
“Electron Technology”, Institute of Applied Semiconductor Technology, Iv.Javakhichvili Tbilisi State University
Institute of Micro- and Nanoelectronics
The p-n junction structures photosensitive in the
near-IR spectral region (1.4-2.2 mm) have been formed by boron ion implantation
into commercial monocrystalline n-silicon with doses
of (1-2)×1014cm-2 and
the acceleration energy of 50KeV followed by annealing at temperature of 1000oC.
The obtained results are discussed in terms of the concept of the changes in
the band structure at the implanted layer - n-Si interface due to the formation
of different-type defects. The results allow was to predict the development of
the controlled defect formation
in this material for various applications
Keywords: silicon, ion implantation,
annealing, photosensitivity, diode characteristics, defect formation.
SUMMARY
PECULIARITIES OF THE FORMATION OF OHMIC AND
SCHOTTKY CONTACTS IN THE TECHNOLOGY OF PRODUCTION OF GALLIUM ARSENIDE SEMICONDUCTOR
DEVICES AND INTEGRATED CIRCUITS
Kalandadze G.D., Ksaverieva M.V.,
Sanikidze L.P., Sakharova T.B.
and Tutunjyan A.A.
Research and Production Complex
(RPC) “Electron Technology”, Institute of Applied Semiconductor Technology of Iv.Javakhishvili Tbilisi State University
Institute of Micro- and Nanoelectronics, Tbilisi
The paper deals with the formation of ohmic and Schottky contacts by
the thermal and electron-beam evaporation techniques to fabricate semiconductor devices and integrated circuits
(ICs) based on n+-n-nd-i-GaAs and AnGaAs/AlGaAs/GaAs
epitaxial structures. Attention is paid to the processes of rapid thermal
annealing. On the basis of the obtained characteristics of ohmic
and Schottky contacts, a conclusion about the use of different
metal compositions and evaporation techniques to develop a reproducible
technology of devices and ICs is made.
Keywords: thermal evaporation,
electron-beam evaporation, annealing, ohmic contacts,
Schottky contacts, gallium arsenide.
EFFECT OF THE f-d EXCHANGE FIELD ON THE
Gamishidze Z.M.
Abstract. The article deals with the impact
of small substitutions of gadolinium for yttrium on the state of spin glass in
the Y(Co1-xMnx)2
system. It is shown that the f-d exchange
interaction induces the long-range ferrimagnetic
order in these compounds. The curve
of magnetization of the Y(Co0.75Mn0.25)2
compound in the fields up to 1,000 kOe formed by joint action of
the f-d
exchange and external fields.
Keywords: f-d exchange
field, Co-Mn matrix, yttrium compounds
SUMMARY
ON THE ISSUE OF AGROECOLOGICAL
EFFICIENCY OF BRIDGE MACHINE UNITS
Purtskhvanidze G.N., Chabukiani R.R.,
Uriadmkopeli T.D., Kheladze
G.V. and Purtseladze I.G.
Akaki Tsereteli
State University, Kutaisi
The article deals with the bridge machine units.
The theoretical preconditions of the application of such units on farms are
given. Their advantages and drawbacks are discussed. The requirements to the
packaging of these units for tillage and the dynamic characteristics of the
cutter are considered.
Keywords: bridge unit, tillage, cutter, agroecological efficiency.
SUMMARY
ON the STUDY OF THE Issue
of RIVERBED Silting by Using A Statistical Approach on the Basis of Mathcad
Software
Bandzeladze B.R.
Akaki Tsereteli
State University, Kutaisi
The paper deals with the issues of riverbed solting accosiated with turbulent
streams. The issues are solved according to the rules of Reynolds-Boussinesq model. For
this purpose, the statistical approach on the basis of MathCad
software is used.
Keywords: silting, turbulent stream, averaged
model, statistics, random number generation, software, MathCad
15.
MINERALOGY OF THE SOILS OF THE OKRIBA BAJOCIAN porphyrite SERIES
Makharadze A.I.
The article deals with the mineralogy of the soil
cover of Okriba Bajocian porphyrite series. It was found that the basic mineral of
this soil cover was montmorillonite. Mixed-bedded
formations illite-montmorillonite and illite-chlorite are also present as impurities.It
is inferred that, as the Bajocian porphyrite
is characterized by uniformity of the mineral composition, the results obtained
for Okriba can be extended over other regions of
Keywords: porphyrite series, Bajocian,
soil cover, montmorillonite, illite.
SUMMARY
DEVELOPMENT OF THE TECHNOLOGY of purification OF GALVANIC WASTE
WATERS FROM HEAVY METALS AND THEIR CONCENTRATION USING THE MEMBRANE METHOD
Kurtskhalia T.S., Enukidze
N.E., Chkheidze N.V., Simonia Z.Sh., Nadirashvili
M.V. and Pavliashvili G.G.
Grigol Tsulukidze
Mining Institute
The article deals with the development of highly
efficient membrane technology of purification of galvanic waste waters from
heavy metals and their concentration. The aim of the investigation was also
designing of the appropriate device. For achieving this aim, on of the membrane methods, electrodialysis
with ion-exchange membranes was used. The experiments were performed by using
the specially designed electrodialysis stand. The
analytical instrumentation mounted on the stand provided the control of
physicochemical and technological parameters of the process of electrodialysis. A special laboratory electrodialyzer-concentrator
was designed for the abovementioned stand. The optimal parameters of the
process were determined.
Keywords: waste waters, galvanic production,
water treatment, concentration of metals, electrodialysis,
membrane method, heavy metals pollution
DEVELOPMENT OF THE DEVICE FOR
ENCODING THE MOVEMENT DEGREE OF SAMPLE PREPARATION UNITS IN ANALYSIS SYSTEMS
Dzagania
T.B., Kakheladze K.G., Padiurashvili V.N., Iashvili N.G., Makhashvili K.A. and
Padiurashvili Z.V.
Georgian Technical University
The operation of transportation of the samples of liquids, soil and/or
plants is essential in the analysis
process. Hence, the movement degree of sample preparation units is of
considerable importance. The article deals with the development of the encoding
device for the movement degree of sample preparation units.
Keywords: sample preparation, analysis
system, movement degree, encoding device.
SUMMARY
THE STRUCTURE OF THE ANALYTICAL CONTROL SYSTEM
FOR WASTE AND SURFACE WATERS
Kakheladze
K.G., Dzagania T.B., Padiurashvili V.N., Makhashvili K.A. and Iashvili N.G.
Georgian Technical University
In the base of available control systems for waste and surface waters, instrumental
method of determination of individual elements are laid. The proposed system
allows realizing practically any method. A version of the structure of such a
system is presented.
Keywords: instrumental methods, water
analysis, titration, sample preparation, dosing.
SUMMARY
IMPROVEMENT OF THE ENVIRONMENTAL
SAFETY OF URBAN TRANSPORT
BY USING THE ADAPTIVE CONTROL
SYSTEMS
Lekveishvili G.A. and Sirbiladze B.V.
Akaki Tsereteli
State University, Kutaisi
The article deals with the issues of improvement
of the environmental safety of urban transport. For this purpose, a method of
computation of the service conditions of urban road transport of different
ecological categories was developed. The computation was performed for two
cases of urban routes: a long route and a short route. The application of the
adaptive control system to the urban transport (replacement of large buses with
compact ones) gave the effect of 20-30%. At long routes, the substitution of the
buses operating on petrol with the ones operating on diesel fuel yielded a
greater effect. As for short routes, the substitution with the buses operating
on petrol was quite sufficient.
Keywords: urban transport, environmental
safety, adaptive control system.
SUMMARY
SOME CONCEPTUAL ISSUES OF PHYSICS STUDY
Kavtaradze N.N., Lekvinadze I.Sh. and Chikovani
R.I.
Georgian Technical University
Akaki Tsereteli State University, Kutaisi
The article deals with the
problems of physics study and the ways of their solution. Emphasis is put on
the issues of modernization of physics laboratories, which implies the
arrangement of modern laboratories. To achieve this aim, students shold be more
active and more keen on the subject. Career guidance and strengthenning of the
Georgian physics school are required.
Keywords: physics, study, physics laboratory.
SUMMARY
MATHEMATIC-CHEMICAL INVESTIGATION
OF METHYL HALIDES WITHIN
THE SCOPE OF PSEUDO-ANB-MATRICES
METHOD
Gakhokidze R.A., Tabatadze L.B., Gakhokidze M.R. and Gverdtsiteli M.I.
Iv. Javakhishvili
Tbilisi State University
Sokhumi State University
The mathematic-chemical investigation of methhyl halides was carried out within the scope of pseudo-ANB- matrices
method. Two correlation equations were derived and studied. The correlation was
good.
Keywords: topologic index,
pseudo-ANB-matrix, methyl halides.
MMMMATHEMATIC – CHEMICAL
INVESTIGATION OF CYCLOALKANES WITHIN THE
SCOPE OF THE BLOCK – MATRICES
METHOD
Gakhokidze R.A., Gakhokidze E.R., Tabatadze L.B. and Gverdtsiteli M.I.
Iv. Javakhishvili,
Tbilisi State University
Sokhumi State University
Abstract. The
mathematic-chemical study of cycloakanes was carriied out within the scope of the block-matrics method. Three correlation equations were derived
and investigated. The calculations showed that the correlation was good.
Keywords: cycloalkanes, blokmatrix,
correlation equations.
ADVERSE EFFECT OF IMPROVERS USED DURING DOUGH
KNEADING ON THE QUALITY OF BREAD
Shildelashvili I.I.
Jacob Gogebashvili
State University, Telavi
The effect of improvers used during dough
kneading on the quality of bread was studied. It was revealed that these
improvers had an adverse impact on the quality of bread. The bread baked from
the dough without adding the improvers was of better quality, stayed fresh
longer and did not crumble as compared to the bread with improvers. The bread
baked without chemical additives was characterized by enzyme resistance of
proteins and starch. Hence, it is inferred that traditional methods of baking
bread proved for ages are preferable.
Keywords: synthesize, improver, porosity,
acidity, amorphous, cristal,
changeful.
NEW ASSORTMENT OF
FUNCTIONAL-PURPOSE SUGAR PASTRY
Khetsuriani G.S.
Akaki Tsereteli State University,
Kutaisi
The article deals with the possibility to use
pumpkin grown in
Keywords: sugary pastry, functional-purpose
product, pumpkin pap, biologically active
substances.
SUMMARY
NON-TRADITIONAL VEGETABLE RAW MATERIALS WITH A LOW-GLYCAEMIC INDEX FOR
NEW-GENERATION DIABETIC CONFECTIONERY AND PASTRY
Karchava M.S., Silagadze M.A., Jinjolia Sh.R. and
Pkhakadze
N.M.
Akaki Tsereteli State University, Kutaisi
The article seals with the problems and prospects
of the production of diabetic foods. There are given principally new approaches
to the production of diabetic confectionery and pastry products, which ensure
imparting additional prophylactic properties to diabetic foods. For replacing
the high- and first-quality wheat flour required for manufacturing of
new-generation diabetic foods, there have been searched, studied and selected
the low-glycaemic index vegetables, including
non-traditional raw materials such as: the second-quality wheat and whole-wheat
flour; the flour produced from barley, oat, oil flax, soya and buckwheat seeds,
as well as from nut fruit (walnut, peanut, almond, etc.) and their coptons; feijoa, apple and citrus
flour, and apple and citrus dietary fiber produced and tested in laboratory.
Keywords: diabetic confectionery,
non-traditional raw materials, low-glyaemic index.
SUMMARY
BEE-FARMING PRODUCTS – THE SOURCE
OF BIOLOGICALLY ACTIVE SUBSTANCES
Tavdidishvili D.R., Khutsidze Ts.Z. and Pkhakadze M.D.
Nowadays it is topical to use natural,
ecologically pure raw materials rich in essential nutrients in the production
of foods. Among such raw materials, bee-farming products deserve special
attention. In the article, the composition and the content of biologically
active substances of traditional and insufficiently known bee-farming products,
the spectrum of their physiological effects, their impact on the human organism
and their applicability in food, pharmaceutical and other industries are
discussed.
Keywords: bee-farming products, foods, green
raw materials, biologically active substances.
SUMMARY
DISEASES OF WOOD SPECIES IN
Kanchaveli Sh.S.
Center of the Biological Protection of Plants
The majority of parasitic diseases
of wood species are fungus ones. The diseases of the seedlings of wood species
are caused by Rhizoctonia, Fusarium, Pythium, Alternaria and Botritis fungi. The group of diseases of mature
plants is more diverse. The cases of foliage damages, conditioned by the types
of powdery mildew, rust and exoascale, mainly
imperfect, fungi are abundant. The diseases of wood are mainly caused by basidium fungi and refer to the decay type.
Keywords: wood species diseases, forest strip, fungus
diseases.
SUMMARY
SOIL TOXICOSES CAUSED BY MICROORGANISMS
Kanchaveli Sh.S.
Center of the Biological Protection of Plants
Soil toxicoses
are manifested in the suppression of growth and development of higher plants
and the depression of their bioproductivity. It is
shown that, under certain conditions, various microorganisms, including fungi,
dwelling in the soil, can form and evolve into the environment toxic
metabolites. These substances affect the plants adversely and are widespread in
soils and plant residues.
Keywords: soil toxicosis,
soil-dwelling microorganisms.
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