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| Datum: | 2018 |
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| Format: | Artikel |
| Sprache: | Russian |
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Інститут проблем реєстрації інформації НАН України
2018
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| Schriftenreihe: | Реєстрація, зберігання і обробка даних |
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| Zitieren: | Реферати // Реєстрація, зберігання і обробка даних. — 2018. — Т. 20, № 1. — С. 76-80. — укр. |
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irk-123456789-1686912020-05-08T01:26:24Z Реферати 2018 Article Реферати // Реєстрація, зберігання і обробка даних. — 2018. — Т. 20, № 1. — С. 76-80. — укр. 1560-9189 http://dspace.nbuv.gov.ua/handle/123456789/168691 ru Реєстрація, зберігання і обробка даних Інститут проблем реєстрації інформації НАН України |
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Реферати Реєстрація, зберігання і обробка даних |
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Інститут проблем реєстрації інформації НАН України |
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Реферати // Реєстрація, зберігання і обробка даних. — 2018. — Т. 20, № 1. — С. 76-80. — укр. |
| series |
Реєстрація, зберігання і обробка даних |
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76
536.58; 681.536.5
. . . -
, . . 2018. . 20. 1. . 3–16. — .
-
.
. -
. .: 13. .: 12 .
: , - -
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UDC
Kosyak I.V. A precision system for thermostabilization with increased power. Data Rec., Storage
& Processing. 2018. Vol. 20. N 1. P. 3–16. — Ukr.
An analysis of principles construction of temperature stabilization and an experimental research on
temperature stabilization system have been carried out. The features of design and construction of
systems for automatic temperature control have been considered. A realization of highly efficient
temperature controller is proposed.
The principles of construction of temperature stabilization systems using Peltier thermoelectric
modules are investigated. A highly effective thermal stabilization system for Peltier modules with output
power > 50 W without the use of expensive controllers has been developed. It is shown that the created
thermostabilization system ensures stability of temperature maintenance 0,01 ° .
The highly effective system of thermal stabilization optimally combines the basic specifications:
high temperature stability, high energy efficiency, low current ripple TEM and low cost.
The urgency of the development is due to the fact that the known temperature controllers, which
provide high accuracy of the maintenance of the set temperature level in the established modes and good
quality of transient processes, have a complicated technical implementation with the use of either
programmable controllers or computer control. Their disadvantage is a high cost and low accuracy of
temperature stabilization in the range of 0,01–0,1 . Regulators with a simple technical implementation
and low price support the accuracy of stabilizing the temperature of 0,1 in the established modes
with significant error and do not provide stability of the stabilization system in conditions of change in
wide limits of the temperature of the surrounding environment.
The highly stable temperature regulator proposed in the article with a relatively simple technical
implementation solves this contradiction.
The controller uses a one-circuit automatic temperature control system. The control loop contains
a proportional-integral-differential (PID) regulator, which, in conditions of disturbing effects on the
stability of maintaining the desired temperature of the object, provides the necessary change in the control
signal at the input of the control circuit. Fig.: 13. Refs: 12 titles.
Key words: thermostabilisation, proportional-integral-derivative control, highly efficient tempera-
ture controller, Peltier module.
004.942
. ., . ., . ., . .
. , -
. . 2018. . 20. 1. . 17–29. — .
-
.
,
, .
,
. . -
Maple. .: 12 .
: , , -
, , , ,
Maple.
ISSN 1560-9189 , , 2018, . 20, 1 77
UDC 004.942
Kalinovsky Ya.A., Boyarinova Yu.E., Khitsko Ya.V. and Sukalo A.S. Structure of an algoritsm
for quick two-dimensional convolution by means of isomorphing hypercomplex numerical systems. Data
Rec., Storage & Processing. 2018. Vol. 20. N 1. P. 17–29. — Rus.
In the mathematical modeling of linear systems, it is necessary to repeatedly perform a linear
convolution of discrete signals.
The complexity of calculating the linear convolution rapidly increases with the length of the
convoluted arrays and their dimension, thus the methods of «fast» convolution calculations are used. One
of the most common methods is convolution using Fast Fourier Transform (FFT) algorithms, which are
based on decomposition of the original large-dimensional problem into a large number of low-
dimensional problems. Thus, it is very important to develop such methods for solving problems for small
dimension, which use, possibly, a smaller number of real operations.
There are a number of methods for the rapid calculation of linear convolution: the methods of
Cook-Toom, Vine, Fast Fourier Transform (FFT), Cooley-Tuke, Good-Thomas, and others.
The algorithms for performing convolution based on the transition to hypercomplex spaces are
considered. The basis of this approach has been developed by the authors.
Convoluted numerical sequences are considered as components of hypercomplex numbers
belonging to some HNS.
The product of these numbers will contain paired products of components of convolutional
numerical sequences. Nevertheless, they will be combined in amounts not in the same composition as
necessary for organizing convolution components.
In addition, the number of real multiplications with multiplication of hypercomplex numbers in the
general case is the same as in the direct calculation of convolution, that’s why there is no profit.
In this way there are two problems: the first one is a reduction in the number of real operations
when multiplying hypercomplex numbers; the second one is the organization of the choice of paired
products of convolution components.
The solution of these two problems allows synthesize such convolution algorithms, which by the
number of operations are more efficient than direct calculation algorithms for convolution. Refs: 12 titles.
Key words: hypercomplex number system, two-dimensional convolution, isomorphism of
hypercomplex number systems, double numbers, orthogonal double numbers, isomorphism operator,
Maple.
004.942
. . - . -
, . . 2018. . 20. 1. . 30–39. — .
-
. -
-
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, , .
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,
. .: 2. .: 8 .
: , , ,
.
UDC 004.942
Kuznietsova N.V. Financial risk management with taking account of information. Data Rec., Sto-
rage & Processing. 2018. Vol. 20. N 1. P. 30–39. — Ukr.
The existing risk management methods, such as risk aversion, localization, diversification and risk
compensation are investigated and the whole process of risk analysis based on the system methodology
through the main stages: detection, analysis and minimization of risk is illustrated. The criterion for ta-
king into account information risks through possible losses in the implementation of information threat is
proposed. The main criteria for analyzing information risks through the assessment of the quality of data,
the decisions taken and the adequacy of the modeling are given, and the own quadratic criterion is pro-
posed to take into account the compensatory costs for combating the risks of both information and finan-
78
cial nature. Also, the system for financial risk management, which takes into account both informational
and financial risks and forms a managerial decision is shown. The process of work of the risk manage-
ment system is adaptive, that is, on the basis of the proposed criteria for assessing the quality of the deci-
sions made, it is possible to accept, reject or re-develop a management solution based on the set of input
data and modeling results. The proposed methodology for analyzing and evaluating information risks
within financial risks has been implemented in a unified information technology on the SAS platform.
Fig.: 2. Refs: 8 titles.
Key words: information risks, decision quality criteria, financial risks, risk management.
551.508.85 (551.576 +551.577)
. ., . ., . . -
’ . , . . 2018. . 20. 1. . 40–50.
— .
, -
,
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’ . .: 12 .
: ’ , , ,
, , , , -
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.
UDC 551.508.85 (551.576 +551.577)
Putyatin V.G., Korban D.V. and Knyaz A.I. Influence of atmospheric conditions on the radio-
location supervision of navigation objects. Data Rec., Storage & Processing. 2018. Vol. 20. N 1. P. 40–
50. — Rus.
A theoretical study on the influence of homogeneous, turbulent environment and the environment
with meteorological formations on the propagation of electromagnetic waves passing through these media
during radar surveillance of navigational objects of the ship radar has been performed. The use of matri-
ces of direct and reverse propagation leads to simplification of the synthesis of changes in the parameters
of the electromagnetic wave, depending on the state of the environment in the remote receipt of informa-
tion about the navigation object.
It is shown that Muller’s dispersion matrix is complete description of dispersive properties of ho-
mogeneous atmosphere (having absent dramatic changes of inductivity), turbulent atmosphere (with the
not looked after by sight dielectric heterogeneities appearing from the dramatic changes of inductivity)
and atmosphere with a presence in her of different meteorological inclusions. The matrix of distribution
of meteorological inclusions is presented by two constituents: determined and statistical ones. The deter-
mined constituent characterizes direct distribution of hertz wave through homogeneous meteorological
inclusions, and a statistical constituent characterizes dispersive properties of particles of different mete-
orological inclusions.
Both the matrix of direct distribution and matrix of reverse distribution of meteorological inclusions con-
sist of two constituents: determined and statistical ones characterizing the process of distribution of hertz
wave from aerial ship radar to the navigation object and from a navigation object to aerial.
At presence of atmosphere of the dielectric heterogeneities, caused by turbulent processes as a re-
sult of dramatic change of temperature or humidity of air in the direction of distribution of the hertz
waves radiated by aerial ship radar, the inductivity of turbulent atmosphere consists of sum of two con-
stituents. One of constituents characterizes the mean value of inductivity in the radio-location volume of
turbulent atmosphere, and other constituent characterizes her deviation from a mean value. These two
constituents are the coefficients of matrix of distribution of turbulent atmosphere and determine the po-
larization state of hertz wave getting through a turbulent atmosphere. Refs: 12 titles.
Key words: navigation object, ship radar, matrix of distribution, electromagnetic wave, environ-
ment of distribution, coefficient of weakening, turbulent environment, gradient of inductivity, coefficients
of matrix, statistical matrix, deterministic matrix, meteorological inclusions.
ISSN 1560-9189 , , 2018, . 20, 1 79
004.93
. ., . . -
. , . . 2018. . 20. 1. . 51–59. — .
-
.
-
. -
.
, ,
. -
-
, . .: 4. .: 13 .
: , , , , , -
, .
UDC 004.93
Kavrin D.A., Subbotin S.A. The majority classes’ reducing method of imbalanced datasets. Data
Rec., Storage & Processing. 2018. Vol. 20. N 1. P. 51–59. — Rus.
To speed up the process of diagnostic and recognition model constructing, it is necessary to extract
a subsample of a smaller volume from the original sample, which will preserve the basic properties of the
dataset. The problem of the sample selection from the imbalanced large-sized datasets has been addressed
for constructing of the diagnostic and pattern recognition models.
The goal of the work is the creation of the sampling’s automatization method from the imbalanced
large-sized dataset, based on the principles of undersampling.
The method of automatization of sample selection from the original imbalanced large-sized dataset
has been proposed. The method consists of two phases. The first phase is reducing the size of the original
imbalanced large-sized dataset while maintaining important topological properties by reducing the major-
ity class. The second phase is restoring the quantitative balance of the classes by generating synthetic
examples of a smaller class. Thus, in the conditions of the class imbalance, the method has allowed re-
storing the balance and reducing the training sample while maintaining important topological properties
of the original imbalanced large-sized dataset, creating high accuracy model within acceptable operating
time.
The software implementing proposed method has been developed and used in the computational
experiments on synthetic and real imbalanced datasets. The conducted experiments confirmed the effi-
ciency and working capacity of the proposed method and its implemented software.
The method and software for sample selection have been developed. They allow automating the
process of training sample selection in conditions of class imbalance for the synthesis of diagnostic and
recognition models by precedents. Prospects for the further research lay in developing the implementation
of the proposed method for multiprocessor systems operating in parallel modes, as well as its experimen-
tal study on the larger datasets of practical problems of different nature and dimension. Fig.: 4. Refs: 13
titles.
Key words: example, classification, majority class, minority class, quality metric, sample, sampling.
621.43.056:632.15
. ., . .
. -
, . . 2018. . 20. 1. . 60–69. — .
. -
, .
-
. .: 6. .: 8 .
: , , , -
, .
UDC 621.43.056:632.15
Trykush N.P. and Segeda I.V. Automated system for calgulating corrective loads and predicting
vibration during dynamic balancing of turbines. Data Rec., Storage & Processing. 2018. Vol. 20. N 1.
P. 60–69. — Ukr.
80
In Ukraine, 47,7 % of electricity production falls on nuclear power plants. An important and time-
consuming process in the NPP is the monitoring of the level of vibration and dynamic balancing of tur-
bines. Nowadays in our country we have only a partial automation of it. Therefore, solving of technical
problems in power engineering based on modern information technologies is actual and in demand.
Analysis of existing solutions shows that there is practically no single algorithm for dynamic balancing
and the method of selecting one optimal load for a set of bearings to eliminate the calculated vibration.
The goal of the work is to create unified software that could not only compute the corrective loads, but
also immediately offer an engineer the most optimal solution how to eliminate the vibration. Actually, to
create such functionality, it is necessary to combine the numerical and vector methods of determining the
vibration and to improve them for the possibility of choosing the best value. Our main tasks: to find the
optimal mass of test load and optimal place to put it; find the optimum mass and the optimal location of
the correcting load during repair and under load in order to get the minimum values of vibration at all
monitored points, without exceeding their normal values; to analyze and predict how the direction of the
vibration vector would change; to visualize the results on the selected direction; to improve a technology
of calculation corrective load for each bearing to obtain more accurate and quick results. Sometimes the
calculated values of the expected vibration do not coincide with real values when a turbine unit is operat-
ing at high power. Therefore, one of the solutions to the problem is to create a knowledge base for the
system and an algorithm to select corrective loads based on conclusions and attempts that system made
earlier. Fig.: 6. Refs: 8 titles.
Key words: mechanical vibration, dynamic balancing, imbalance, balancing of rotors, automation
of balancing corrective loads calculations.
681.322:621.391
. ., . ., . ., . ., . . -
. , . . 2018. . 20. 1. . 70–75. — .
.
. ,
. .: 6. .: 5
.
: , , , -
.
UDC 681.322:621.391
Leontiev V.O., Lyakhovchenko N.V., Sinyuhin V.V., Skutelnik I.V. and Pryimak A.V. Experi-
mental research of the problems of detecting bugs by means of nonlinear location. Data Rec., Storage &
Processing. 2018. Vol. 20. N 1. P. 70–75. — Ukr.
It is common knowledge that today information is the most important resource of the modern
world. Active development of information technologies and their integration, determine the extremely
important roles that they play in many spheres of human life. Important information of national impor-
tance should be protected from unauthorized interception and the special importance in the issue of in-
formation security is the problem of information leakage through the mortgage devices. The problem lies
in the fact that such devices for data capture can use most of the existing leakage channels. However,
bookmarks are often used to intercept acoustic (linguistic) and specific information. Therefore, knowl-
edge of the structural and technical features of the construction and functioning of hardware bookmarks is
necessary to identify their strengths and weaknesses and to choose the optimal method of counteraction.
The experimental researches of problems of detection of the mortgaged devices by a nonlinear locator are
carried out. Laboratory studies were carried out using different semiconductor elements with different
lengths of legs. The obtained results have shown that the length of the legs of semiconductor elements
affects their detection. Fig.: 6. Refs: 5 titles.
Key words: information protection, nonlinear locator, bug, semiconductor element.
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