CONSISTENT CRITERIA FOR TESTING
HYPOTHESES
Zerakidze Z.S.
Gori
State University
Abstract. The paper deals with the consistent criteria for testing
hypotheses. The probability of any kind of error is equal to zero for a given
consistent criterion. The
necessary and sufficient conditions for such criteria to exist are proved.
Keywords: hypothesis testing, consistent criteria, probability
measures.
SUMMARY
ON THE SOLVABILITY OF
THE THIRD AND THE FOURTH BASIC THREE-DIMENSIONAL DYNAMIC BOUNDARY-CONTACT
PROBLEMS OF THE HEMITROPIC THEORY OF ELASTICITY
Bezhuashvli Yu.A. and Rukhadze R.V.
Georgian Technical
University
The paper deals with third and
the fourth basic
three-dimensional dynamic boundary-contact problems for a hemitropic micropolar medium bounded by finite piecewise homogeneous
domains. The theorem of the existence and the uniqueness of the classical
solution is proved
by using the Fourier method.
Keywords: three-dimensional dynamic boundary-contact problem,
hemitropic theory, classical solution, Fourier method.
ONE APPROACH TO ROBOT SWARM
CONTROL
Petashvili P.P. and Meparishvili B.D.
Georgian Technical University
Abstract. Multi-mobile sensor systems, as
reconfigurable wireless networks of
distributed autonomous
devices, can sense or monitor physical or environmental
conditions cooperatively. Usually, in the multi-agent system,
interaction dynamics between an agent and its environment leads to an emergent
structure or emergent functionality. To be effective, the multi-agent systems
must yield coordinated behavior from individually autonomous actions. The control
of reconfigurable sensor networks is fundamentally a difficult problem. In the system, there must be balanced the power censumption,
communication versus control, and the effectiveness of adaption to the
environment as well as to changing science requirements. We discuss different
kinds of metrics for robotic groups behavior. In this paper we present a
motion planning approach to allow a group of mobile homogeneous robots
with sensors to scan the given area of interest and to map the radiation levels
over it, when robots cover their allocated areas in an efficient manner,
collecting enough measurements at each location to allow a certain confidence
level about the measured intensity to be reached.
Keywords: environmental
monitoring, sensor systems, swarm
intelligence, entropy.
THE IMPACT OF THE PULSE-WIDTH
MODULATION FREQUENCY ON THE OPERATION
AND DYNAMIC PROPERTIES OF THE TRANSISTOR CONVERTER
Qvrivishvili N.M.
Georgian Technical University
Abstract. By a definite example,
the devepopment of a mathematical model of the pulse device approximating the reality by
means of frequency links is shown. The emphasis is made on understanding and judgement of the physical essence of dynamic
properties and the operation of the modelled pulse
device. Without their clear understanding, the objective analysis is impossible.
The dependence of the target signal on the frequency of the operating signal was
established by the construction of frequency characteristics of the device. The
results of this work can be used in designing the control circuits of direct
current electric drives, and also various pulse devices.
Keywords: transistor converter, pulse-width modulation,
mathematical model.
ADAPTIVE USAGE OF MAIN
RESOURCES IN MIMO -COGNITIVE RADIO NETWORKS
Kvirkvelia Sh.V., Kortua T.N.
and Beridze J.L.
Georgian Technical University
Abstract. Cognitive radio is
a novel approach
that basically improves
the utilization efficiency
of the radio spectrum. MIMO cognitive network
means: a more efficient usage of the available frequency spectrum; more
robust wireless end-to-end connections without sacrificing the real-time
capability; improved mobility by means of autonomous, intelligent adaptation to
the environment.
Keywords: cognitive radio, MIMO network, adaptation, spectrum
sensing.
SUMMARY
A NEW APPROACH TO THE CREATION OF HYBRID
INTELLECTUAL SYSTEMS
Lezhava G.G., Kamkamidze I.Sh., Berikishvili Z.I., Vardosanidze A.K.
and Mkrtichian E.M.
V. Chavchanidze
Institute of Cybernetics of Georgian Technical University
The paper deals with a new approach to the problem of
artificial intellect. It is based on the hypothesis about the basic operation of
inductive logic and on the application of a processor of an inductive inference
in hybrid intellectual systems, which will form the perspectives of approachement of the artificial intellect to the
natural intellect and the basis for research of artificial
intellectual systems of new generation.
Keywords: artificial intellect, inductive logic,
processor, inductive
inference, hybrid intellectual systems.
PSYCHICS IS CHARACTERIZED BY
THE QUANTUM PROCESS
Kadagishvili
L.G.
V.V. Chanvchanidze
Institute of Cybernetics of Georgian Technical University
Georgian Engineering Academy
Abstract.The article deals with
the introduction of the quantum description when considering the perception
structure. The link between the psychic
conscious and unconscious phenomena is wave-like and can be understood as the
relation of the realized information and the source of information to the
dynamics of excitation. Only part of the excited energy in the human brain is
transformed into the realized information; namely, it is the part, which can
concentrate to a certain extent on overcoming the limit of consciousness. The
total energy of the unrealized excitation is divided into effective and
non-effective types, which can be later realized as portions. Just
such an alternation
of energy forms the wave-like response in the consciousness. The fact of the
psychics being characterized by the quantum process is implied in its manifestation.
The spectrum of properties shows that, like it happens in the process of revealing
the quantum phenomena, the phenomenon under study is corpuscular and
wave-like. As is
known, the major property of the quantum process is the concept of a quantum,
which is irradiated in separate portions or quanta (is realized in our case).
Keywords: sub-sensor perception, psychics, the conscious,
non-conscious, quantum process.
SUMMARY
THE ISSUES OF INFORMATION
SECURITY IN AUTOMATED PERSONNEL MANAGEMENT SYSTEMS
Chaduneli N.G.
Georgian Technical University
The paper deals with the
information security of automated personnel management systems. The problem of
guaranteeing such security is analyzed on the basis of a specific character of
processing of personal data and a technique of selection of appropriate
measures and means. The legal base and standards concerning the information
security in the sphere of interest are discussed.
Keywords:
information security, automated system, personnel management.
SUMMARY
THE PROBLEM OF THE
COMMUNICATION SERVICE QUALITY IN MODERN TELECOMMUNICATIONS
Svanidze R.G., Chkhaidze
M.T. and Gudzuadze Z.N.
Georgian Technical University
Georgian National Communication Commision
The paper deals with the quality
of communication service in modern telecommunication networks. The state of art
in Georgia is discussed. There are considered the issues of monitoring and
supervision, the organizations involved, a scheme of assessment of the communication quality, approaches to the
improvement of the communication quality, the ETSI (European Telecommunications
Standardization Institute) model of assessment of the communication service
quality, the Service Layer Agreement (SLA), etc. A system for monitoring the
telecommunication quality in Georgia was developed, a
typical testing complex for mobile communication was composed, etc. The
expected results of the monitoring of the communication service in Georgia, in
case such monitoring would take place, are assessed.
Keywords: telecommunication, service quality, monitoring.
SUMMARY
NEW METHODS OF
COMPUTATION OF THE ENERGETIC SPECTRA OF LINEAR SIGNALS IN DIGITAL FIBER-OPTICAL TRANSMISSION
SYSTEMS
Mestiashvili K.V., Svanidze
R.G., Chkhaidze M.T. and Popov D.B.
Georgian Technical University
The paper deals with a new
approach to the computation of the energetic spectra of block linear signals of
class mBnB in digital fiber-optical transmission
systems. Unlike the classical method, where one needs all eigenvalues of the
matrix of transition probabilities M, in the proposed approach, it is only
necessary to construct the characteristic polynomial for the given matrix M.
Moreover, at large dimensions of matrix M, the problem is even simpler, because
the characteristic polynomial of matrix M is constructed on the base of the
constructed characteristic polynomial of submatrix V,
the order of which is significantly lower than that of matrix M.
Keywords: fiber optics, transmission, linear signal, energetic
spectrum.
SUMMARY
CONSTRUCTION OF THE DEFENSIVE SYSTEM OF POWER FACILITIES BY A MODULAR
CONCEPT
Dadunashvili
S.A. and Gogilidze E.R.
Georgian Technical
University
The paper deals with a new concept of construction of a grid complex for
control and security of power facilities and the data transition to smart grids
via an active-adaptive network of sensors and actuators.
Keywords: power facilities,
defensive system, algorithm, automation, control.
BALL FIXTURE FOR RADIATION MODIFICATION OF THE
MATERIAL BY ION BOMBARDMENT
Guldamashvili
A.I., Bokuchava G.V., Inalishvili A.G. and Кuchukhidze V.A.
Ilia Vekua Sukhumi Institute of Physics and Technology (SIPT)
Abstract. A special
fixture for ion-beam processing of ball items made of steel 440C was
designed and fabricated. In the designed fixture, coaxial grooves were selected as ball holders, which rotate in opposite directions.
The grooves are located on a round disk, which rotates round its
axis. The rotation of
holders with the help of a shaft is fulfilled by a bevel drive, using a reversible
asynchronous motor with a built - in reducer. Such a method of balls stirring provides the best uniformity of coating during ion
processing.
Keywords: ball holder, radiation modification,
ion bombardment.
SUMMARY
A DEVICE FOR LIFTING THE BOTTOM
SEDIMENT: DEFINITION OF BASIC DESIGN AND OPERATION PARAMETERS
Gagoshidze
Sh.N.,
Kadaria Yu.R. and Saginadze
I.S.
Georgian Technical
University
Akaki
Tsereteli State University, Kutaisi
The
paper deals with a jet device for lifting the bottom sediments. The basic
design and operation parameters of the proposed device are defined. The device
consists of a spiral gas-liquid pump, a receiver and a jet pump. It is designed
for lifting the bottom sediment.
Keywords: jet pump, spiral pump, air
lifting, bottom sediment.
SUMMARY
A DESIGN OF HIGH-PRESSURE
CELLS FOR SINTERING OF COMPOSITE DIAMOND MATERIALS
Loladze N.T., Tserodze Sh.P., Tserodze M.P., Dzidzishvili I.G.,
Avalishvili Z.A. and Sulaberidze Z.U.
The paper deals with a new design
of high-pressure cells with a minimum temperature gradient in the working
volume. The application of new materials for heaters and heat insulation
allowed us to improve significantly the efficiency of sintering of composite diamond
materials.
Keywords: composite diamond materials, sintering, high-pressure
cell.
SUMMARY
ON THE EQUATION OF
EQUILIBRIUM OF THE HOSE LOADED WITH EXTERNAL DISTRIBUTED AND CONCENTRATED
FORCES AND AN INTERNAL
FLUID FLOW
Arkania Z.M.
Akaki Tsereteli State
University, Kutaisi
The paper deals with the equilibrium equations for the flexible hose loaded with external concentrated
and distributed forces and an internal fluid flow. It is shown that the
equations of equilibrium of the hose sections located between any two
concentrated forces and boundary conditions at the nodes of the hose sections
coincide with the equilibrium equations and boundary conditions in the nodes of
the sections of an absolutely flexible shank (thread). i.e.
the equilibrium equations of the hose loaded with concentrated forces and the internal
fluid flow can be reduced to the absolute equilibrium equations of a flexible
shank (thread), which is loaded with concentrated forces.
Keywords: equilibrium equation, hose,
load, distributed forces, concentrated forces, internal fluid flow.
SUMMARY
CONCENTRATION
DISTRIBUTION IN THE DIFFUSION LAYER IN THE OVERLIMITING
MODE OF
ELECTRODIALYSIS
Rukhadze Sh.Sh., Apridonidze M.D. and
Qevanishvili K.M.
Akaki Tsereteli State University, Kutaisi
For
single-component solutions for
the conditions of a perfectly
selective cation-exchange membrane in relation to electrodialysis, we obtained a numerical solution to the
problem of formation of ion fluxes in the diffusion boundary layer. The solution was formulated on the basis of Nernst–Planck equations under a nonlinear character of the
concentration change
with dissociation products of water – hydrogen and hydroxyl ions. In the
overlimiting mode of electrodialysis,
we obtained the
dependences of transfer
numbers for the ions involved in mass transfer on the current density and the
changes in local
transfer numbers by the thickness of the diffusion layer.
Keywords: electrodialysis, concentration
distribution, diffusion layer, overlimiting mode.
SUMMARY
EXPERIMENTAL
INVESTIGATION OF WATER CLARIFIERS WITH SUSPENDED RESIDUE WITH WATER SUPPLY
PULSATION AND WITHOUT IT WORKING IN PARALLEL
Zalikashvili Z.O., Khatiuri Kh.N.
and Zalikashvili G.O.
Georgian Technical
University
It is shown that, as for the
quality of water clarification, both clarifiers yield a similar effect under
the same conditions. Howerer, the clarifier with
pulsed water supply needs a higher level of the suspended layer.
Keywords: water clarifier, water supply pulsation, suspended
residue, working height.
SUMMARY
THULIUM MONOSULFIDE NANOFILMS TECHNOLOGY
Jabua Z.U., Teteloshvili
M.G. and Gigineishvili A.V.
Georgian Technical University
The technology of fabrication of
thulium monosulfide nanofilms
was developed. The films were fabricated by descrete
thermal vacuum evaporation of preliminarily synthesized bulk material. It is
shown that the substrate temperature affects the sizes of characteristic
particles. When the temperature increased from 930 K to 1115 K, the particle
size increased from 18 nm to 48 nm.
Keywords: nanofilm, vacuum evaporation,
particle size, thulium monosulfide.
SUMMARY
ON THE HISTORY OF PRODUCTION OF METALLIC ANTIMONY IN ANCIENT GEORGIA
Kapanadze M.B., Tsirekidze
G.G. and Chagunava R.V.
Georgian Technical University
Georgian Aviation University
The paper deals with the ancient
mining-metallurgic production of metallic antimony in Georgia. The production
functioned in Zophkhito (mountainous Racha) in the ravine of the River Rioni
from the II millennium B.C. to the IV century A.D. Archeologist G. Gobedzhishvili calculated (1952) that the amount of ore
mined by that production exceeded by several orders of magnitude the amount of
ore needed for local population. Based on those data, he inferred that the
excess of antimory ore was used by the natives for
exchange/trade with other regions. Earlier R.J. Forbes, a well-known expert in
the history of metallurgy, made a similar, but a more large-scale, assumption
(1950). He thought that the people of the ancient Caucasus delivered metallic antimory to Egypt and Mesopotamia. Considering those two
assumptions, we can infer that ancient Georgia was one of the centers of
antimony production and it supplied other countries with this metal.
Keywords: antimony, ore, mining, ancient Georgia.
SUMMARY
THE DYNAMICS OF
CHANGES IN TERPENES DURING ALCOHOLIC FERMENTATION
IN THE GRAPES AND MUST OF RKATSITELI
MUSCAT
Qituashvili T.G., Khositashvili M.L., Buishvili G.N. and Khositashvili T.V.
Jacob Gogebshvili State University, Telavi
The paper deals with the dynamics
of changes in terpenes during alcoholic fermentation in the grapes
and must of Rkatsiteli Muscat. It was revealed that the increase-accumulation of the concentration of all terpene
compounds proceeded up to the accumulation of 18 % sugar , then the concentration of terpenes remained unchanged. When the concentration of
sugar reached 21-22 %, the concentration of terpenes
decreased gradually. The reduction in the total concentration
of terpenes
was related to the accumulation of spirit in the fermentation area.
Keywords: terpenes, alcoholic
fermentation, grapes, must.
SUMMARYY
ECONOMIC AND TECHNOLOGICAL
CHARACTERIZATION OF RKATSITELI
MUSCAT AND ALEKSANDROULI MUSCAT CULTIVARS
Qituashvili T.G.,
Khositashvili M.L., Buishvili G.N. and Khositashvili T.V.
Jacob Gogebashvili
State University, Telavi
The paper deals
with the economic and technological characterization of Rkatsiteli
Muscat and Aleksandrouli Muscat cultivars. This
characterization allows us to infer that the cluster composition and the
chemical characteristics of these cultivars correspond to the variety of properties characteristic
of wine grape cultivars.
Keywords: grapes, wine, muscat, characterization.
SUMMARY
DEVELOPMENT
OF THE TECHNOLOGY FOR DIABETIC LOW-GLYCEMIC
CRACKERS
Karchava M.S., Silagadze M.A., Berulava I.O., Jinjolia Sh.R. and Pkhakadze N.M.
Akaki
Tsereteli State University, Kutaisi
The studies carried out for production of
low-glycemic crackers envisaged the replacement of wheat
flour with raw
materials with the low content of starch, and, on the other hand, the replacement of flour with gluten.
During the cracker production process, we also replaced 30-50% of wheat flour with various natural additives
rich in
biologically active substances.
We produced the additives with the low content of starch (0-8%) such as washed wheat dietary fiber;
fruit flour and dietary fibers; soya flour; topinambour semi-finished products of different composition. On the basis of the studies carried
out, the optimal
technological process
for production of crackers was determined; the nutrition value of the
final product
was calculated. The content of starch in the
diabetic cracker is
22.2-23.6%.
Keywords: diabetic cracker, low-glycemic content, natural
additives.
SUMMARY
DEVELOPMENT OF THE TECHNOLOGY FOR DIABETIC LOW-GLYCEMIC HONEY CAKES
Karchava M.S., Silagadze M.A., Berulava
I.O., Jinjolia Sh.R. and Pkhakadze
N.M.
Akaki Tsereteli State University, Kutaisi
As a result of
studies, we experimentally substantiated the use of wheat dietary fiber and a natural
substitute of sugar –stevioside “Svita”
as a powerful additive for production of honey cakes. It was revealed that the
replacement of sugar with wheat dietary fiber and stevioside
in the formulation improved rheological properties of honey cake dough and
increased its plasticity, and improved organoleptic and physical-chemical
parameters of the finished product. There is also shown that these additives
delay the obsolescence of the product during storage. A new stock of honey
cakes with a low-glycemic index as well as its production technology is under
development.
Keywords: diabetic cakes, honey cake,
production technology, low-glycemic index.
Koiava l.N.
and Kacharava T.O.
Georgian Technical University
The paper deals with the distribution of four
species of
blueberry: Vaccinium Vitis–idaeae,
Vaccinium Myrtilus, Vaccinium Corymbosum, Vaccinium Arctostaphylos
and their genetic resources, areas, chemical compositions and stable use in
Georgia. The biologically active substances - pectins
were determined in the berries of Vaccinium Arctostaphylos and Vaccinium Uliginosum.
Keywords: blueberry, genetic resources, stable use, pectins.
SUMMARY
LOCAL AND
NON-TRADITIONAL RAW MATERIALS
WITH THE
PROSPECT OF THEIR USE IN COMBINED FOOD PRODUCTION
Pxakadze M.D., Berulava I.O., Silagadze
M.A. and Jinjolia Sh.R.
Akaki
Tsereteli State University, Kutaisi
Combined food production is a promising and
actual trend focused
on the search for
new
sources of raw materials, their rational use and cost-effective technology
for creation of functional food additives. From this standpoint, we deem
Caucasian beech fruit - beech nuts (Fagus
orientalis L.), hazelnuts and the wastes of its
industrial processing to be promising materials. They contain complete proteins, fats,
carbohydrates, dietary fiber, macro- and trace elements, fatty acids, amino
acids and vitamins and other useful components
Keywords: food production, local raw
materials, nontraditional raw materials, food additives.
SUMMARY
CHANGES IN THERMO-PHYSICAL
CHARACTERISTICS OF MEAT AND
MEAT PRODUCTS DURING FREEZING
Tavdidishvili D.R., Khutsidze Ts.Z. and Tsagareishvili D.R.
Akaki Tsereteli State University, Kutaisi
In this paper, the importance of the
physical parameters acting on meat and meat products and the changes
in the product with their
variations is discussed. In particular, the freezing process changes the
physical characteristics such as density, heat capacity, heat transfer,
viscosity etc. These changes affect the quality of the product. The
intensification of freezing provides the preservation of quality of the product
and the reduction in the loss of mass.
Keywords: meat, meat products, quality, freezing, thermo-physical
characteristics.
SUMMARY
TRANSDERMAL
THERAPEUTIC SYSTEMS
Pailodze N.O., Buadze E.P., Shvangiradze
G.V., Metreveli O.O. and Khurtsilava
I.A.
Akaki Tsereteli State University, Kutaisi
The paper deals with transdermal
therapeutic systems. Their advantages and drawbacks are discussed. It is shown
that, for some medicines, the transdermal delivery is the only way of their
introduction into the organism. Besides, the transdermal delivery of medicines
is much more convenient for the patients suffering chronic diseases, as they
need permanent or long-term treatment. However, the transdermal delivery of
medicines has a number of drawbacks such as: 1) skin irritation, allergic
reaction; 2) takes the medicine longer time to begin its action than the
injection; 3) only powerful medicines having certain physicochemical properties
can be delivered in this manner. The ways of improving the transdermal
therapeutic systems are
considered. They include such physical methods as ionophoresis, sonophoresis and
electrophoresis.
Keywords: transdermal therapeutic system, medicine delivery.
SUMMARY
STUDY ON THE FABRIC SURFACE COATED WITH A BIOCOMPOSITION
Pailodze N.O. and Metreveli O.O.
Akaki Tsereteli State University, Kutaisi
The paper deals with medicinal
tissues coated with biocompositions. It was revealed
that, when the 10% biocomposition was used, the pores
were not completely closed. It is important, because, if the pores are
completely closed, the greenhouse effect could take place, which will promote
the development of undesirable microorganisms under the tissue. The discrete
distribution of the biocomposition on the tissue
surface makes the tissue “breathe” and thus makes it more comfortable for the
patient. Based on the analysis of tissue roughness, capillars,
air penetration, variations of medicine amount, we chose the 8% bentonite composition, which was deposited on the fabric.
Keywords: medicinal tissue, fabric, surface, biocomposition,
bentonite.
SUMMARY
THE HISTORY OF FIBER ORIGIN
Pailodze N.O.
Akaki Tsereteli State University, Kutaisi
The paper is a review of the
history of the use of fiber. By the literature data, it was found out where and
when the use of fiber originated. A long time ago people began the cultivation
of plants such as flax, jute, hemp and other giving the fiber. People also began
using the fiber of animal origin such as wool and silk ages ago. The
cultivation and use of cotton began relatively later. However, due to its
remarkable properties, it found wide application and became the most popular
very soon.
Keywords: fiber, origin, use, history.
SUMMARY
PATHOGENESIS OF
SPORTSMEN’S FEET TRAUMAS
Grdzelidze M.G. and Shalamberidze M.M.
Akaki Tsereteli State
University, Kutaisi
The character of motion typical
of the kind of particular sport affects significantly the sportsman’s locomotor apparatus. The anthropodynamic
diagnostics of
sportsman’s feet and the pathogenesis of their morphological peculiarities are
the bases for designing the footwear for sportsmen corresponding to international standards.
Keywords: foot pathogenesis, sports footwear, sports trauma.
SUMMARY
EHIOLOGY OF THE SPORTSMAN’S FOOT DEFORMATION
Grdzelidze M.G. and Shalamberidze M.M.
Akaki Tsereteli State University, Kutaisi
The data on foot biomechanics,
motions and dynamic load, the kind of sport, the ethiology
of sports traumas and the way of their prevention, etc. are the bases for
designing and production of the footwear comfortable for sportsmen. This is
essential for providing their amortization and steady equilibrium with the aim
to protect their feet and prevent feet deformations.
Keywords: sports footwear, foot deformation, ethiology.