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irk-123456789-845282015-07-10T03:02:07Z Abstracts 2014 Article Abstracts // Кибернетика и вычислительная техника. — 2014. — Вип. 177. — С. 88-98. — англ. 0452-9910 http://dspace.nbuv.gov.ua/handle/123456789/84528 en Кибернетика и вычислительная техника Міжнародний науково-навчальний центр інформаційних технологій і систем НАН України та МОН України |
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Abstracts // Кибернетика и вычислительная техника. — 2014. — Вип. 177. — С. 88-98. — англ. |
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88
ABSTRACTS
UDC: 681.5
WELL-POSED IDENTIFICATION OF NUCLEAR
TYPE INFINITE AND MULTIDIMENSIONAL
SYSTEMS
V.F. Gubarev, A.V. Gummel, S.V. Melnychuk
Space Research Institute of the National Academy of Sciences of Ukraine and State
Space Agency of Ukraine, Kiev, Ukraine
Introduction: System identification problems have the feature that under
certain conditions its solutions become highly sensitive to the errors in input data.
Especially it takes place in multidimensional cases when even an appropriate model
set of the original system is unknown. In such cases it is necessary to use different
infinite-dimensional expansions as model set. Hence there is a problem of
approximation infinite-dimensional linear system by finite-dimensional ones.
Selection of model order is defined by the well-posedness which should ensure the
solution sustainability.
Purpose: The purpose of research is to establish and study conditions, that
define when system identification problems are well-posed and when solutions
become unstable and therefore practically unfit for parametric-structural
identification on the base of description in the form of infinite expansions.
Results: It was shown that solution high sensitivity is associated with ill-
conditioned matrices that are used to estimate the coefficients of the model. For
finite-frequency and subspace identification methods it was demonstrated that
depending on the ratio of the input data error and the condition number of matrix the
solution of identification problem can be both stable and unstable.
In multiple experiments with different system on the plane of these two
parameters distribution of models by stability was obtained which allowed us to
construct the stability domains. Further this domains can be used in regularizing
procedure when selecting the model order.
Conclusions: Identification problems of infinite or multidimensional systems
may be fully treated as essentially ill-posed. It is shown that this property is
fundamental regardless what kind of method is applied.
Correct solution of identification problem is almost always requires the use of
regularization procedures which imposes restrictions on the model dimension.
Resulting reduced model approximate the real system with respect to output only so
model parameters can differ from the same parameters of the real system.
Keywords: system identification, ill-posed problem, finite-frequency
identification, subspace (4SID) identification, regularization.
1. Funrmann P.A. Linear Systems and Operators in Hilbert Space. McGraw-Hill, New York.
1981. 476 p.
2. Glower K., Curtain R.F., Partington J.R. Realization and Approximation of Linear Infinite-
Dimensional Systems with Error Bounds. SIAM Journal Control and Optimization, 1988, vol.
26, no. 4, pp. 863–897.
3. Gubarev V.F. Problem-oriented identification and control in the system with distributed
89
parameters. Problems of Control and Informatic, 2000, no. 3, pp. 26–37
(in Russian).
4. Gubarev V.F. Rational approximation of the system with distributed parameters. Cybernetic
and system analysis, 2008, no. 2, pp. 99–116 (in Russian).
5. Gubarev V., Zhukov O. Rational Approximation and Identification of Distributed Parameter
Systems. Proceedings of the 17-th World Congress IFAC. July 6–11 2008. Seoul, Korea, pp.
6452–6457 (in Russian).
6. Antoulas A.C., Sorensen D.C., Gugercin S. A survey of model reduction methods for large-
scale systems. Contemporary mathematic, 2001, 280, pp. 193–219.
7. Alexsandrov A.G. Method of frequency parameters. Automatica and Telemechanick. 1988, 50,
no. 12, pp. 3–5 (in Russian).
8. Alexsandrov A.G. Finite-frequency identification: multidimensional object. International
conference on control problem. Proc. of the conf. Moscow: Institute of control problem RAS,
1999, no. 1, pp. 15–28 (in Russian).
9. Orlov Yu.F. Frequency parameters identification under parallel tests. Automatica and
Telemechanick, 2007, 68, no. 1, pp. 20–40 (in Russian).
10. Gubarev V.F., Melnichuk S.V. Identification of multidimensional system using steady-state
parameters. Problems of Control and Informatic, 2012, no. 5, pp. 26–43
(in Russian).
UDC: 519.9
EXTERNAL ELLIPSOIDAL APPROXIMATION
OF REACHABLE SETS OF DYNAMIC SYSTEMS
N.A. Babii, V.V. Volosov, V.M. Shevchenko
Space Research Institute of the National Academy of Sciences of Ukraine and State
Space Agency of Ukraine, Kiev, Ukraine
Introduction: The methods for constructing the external ellipsoidal estimates
of reachable sets of discrete and continuous dynamic systems (DS), susceptible to
external bounded disturbances are proposed. Effectiveness of this method is
illustrated by the example of the system control of a solid body angular motion.
The purpose: Development of constructive methods for constructing
ellipsoidal estimates of reachable sets DS and obtaining guaranteed accuracy
estimates of DS control systems in steady mode.
Results: Ellipsoidal estimates reachable sets of continuous and discrete DS
obtained according to consistent methodological approach based on using the
support functions apparatus of convex sets and methods of mathematical
programming. The proposed methods are locally optimal by matrix trace criteria of
estimating ellipsoids. Ellipsoidal estimates of limit sets of continuous linear DS with
bounded external disturbances are obtained based on use known General direct
Lyapunov method. As exemplified by control of a solid body angular motion,
ellipsoidal estimates of limit sets and asymptotic estimates of reachable sets are
complementary. The intersection of these sets is an improved estimate of steering
control accuracy in the steady mode.
Conclusions: In order to obtain estimates of the accuracy of the DS control
systems it seems to be reasonable using Lyapunov direct method and methods for
constructing ellipsoidal estimates of reachable sets of DS.
Keywords: dynamic system, uncertainty, ellipsoidal estimates, reachable set,
limit set.
90
1. Chernousko F.L. Estimation of the dynamic systems phase state. Method of ellipsoids.
Moscow: Science, 1988. 320 p. (in Russian).
2. Kuntcevich V.M., Kurzhanskiy A.B., Attainability of certain classes of linear and nonlinear
discrete systems and management. Control and Informatics, 2010, no. 1, pp. 5–20 (in Russian).
3. Kuntcevich V.M. Invariant sets (area dissipativeness) nonlinear discrete systems in the
analysis and synthesis of control systems. Plenary sessions of the International Multi
Conference "Theory and Control Systems." Moscow, 26–30 of January 2009, pp.206–217
(in Russian).
4. Ovseevich A.I., Chernousko F.L, Properties of optimal ellipsoids approximating the reachable
systems with uncertainties. A Journal of Russian Academy of Sciences. Theory and control
systems. 2004, no 4, pp. 8–18 (in Russian).
5. Gusev M.I. Estimates of reachable sets of multidimensional control systems with nonlinear
interconnections. Proc. of IMM RAS, 2009, vol 16, no 1, pp. 223–232 (in Russian).
6. Ushakov V.N., Matviichuk A.R., Ushakov A.V. Approximation of attainable sets and integral
funnels of differential inclusions. Vestn. Udmurtsk University, 2011, vol. 4,
pp. 23–39 (in Russian).
7. Rockafellar R. Convex analiz. Moscow, 1973. 470 p. (in Russian).
8. Pshenichnii B.N., Danilin Y.M. Numerical methods in extremal problems. Moscow: Science,
1975, 320 p. (in Russian).
9. Polovinkin E.S., Balashov M.V. Elements of convex and strongly convex analysis. Moscow:
Fizmatlit, 2004. 416 p. (in Russian).
10. Schweppe F.C. Recursive state estimation: unknown but bounded error and system inputs.
IEEE Trans. Automat Control, 1968, vol. AC-13, no. 1, pр. 22–28.
11. Bahvalov N.S., Zhidkov N.P., Kobelkov G.M. Numerical methods. Moscow: Science, 1987,
600 p. (in Russian).
12. Kurzhanski A.B. Management and supervision in the face of uncertainty. Moscow: Science,
1977, 392 p. (in Russian).
13. Zubov V.I. Stability of motion. Moscow: Higher School, 1973, 272 p. (in Russian).
14. Kuntcevich V.M., Lychak M.M. Synthesis of automatic control systems via Lyapunov
functions. Moscow: Science, 1978, 400 p. (in Russian).
15. Volosov V.V. Control of the orientation of the spacecraft in orbital coordinate system using
ellipsoidal estimates its state vector. Problems of Control and Informatics. 1998, no 5,
pp 31–41 (in Russian).
16. Voevodin V.V., Kuznetsov Y.A. Matrix and calculations. - Moscow: Science, 1984, 320p.
17. Volosov V.V., Kalita A. Study of algorithm of simultaneous estimation of parameters and the
phase state of a discrete dynamic object. Cybernetics and Computer Engineering, 1988,
vol 79, pp.23–28 (in Russian).
UDC: 517.977
OPTIMAL CONTROL BY VIBRATIONS
OF A RECTANGULAR MEMBRANE
M.M. Kopets
National Technical University of Ukraine “Kyiv Polytechnic Institute”, Kiev, Ukraine
Introduction: In the theory of optimal control one of the central role rightly
takes linear quadratic problem. For controlled systems with lumped parameters this
problem was studied in sufficient detail that cannot be argued about a similar
problem for systems with distributed parameters. In this article the linear- quadratic
problem is investigated by the modern methods of variational calculus and
mathematical physics. The purpose of this article is to study the linear- quadratic
problem of optimal control of oscillations of a rectangular membrane, namely
obtaining necessary optimality conditions and the derivation of the formula for
91
calculating the optimal control.
Statement of the Problem: Controlled process is described by a two-
dimensional wave equation with partial derivatives. There are given the initial
conditions and homogeneous boundary conditions. The cost functional is a
quadratic. Admissible control which is implemented at least the cost functional is
called optimal.
The main results: The author of the article obtains the necessary optimality
conditions. At their bases derived a system of integro-differential Riccati equations
with partial derivatives. The solution of this system provided an opportunity to write
an explicit formula for calculating the optimal control.
Conclusions: In this paper a system of integro-differential equations with
partial derivatives of the Riccati for linear quadratic optimal control problem of a
rectangular membrane vibration process is obtained. The solution of this system
provides the ability to write an explicit formula for calculating the optimal control.
Promising for further study is to obtain similar results for the case of a circular
membrane. Also of note is the advisability of generalization of the results obtained
in this paper for the case of systems with fractional derivatives.
Keywords: optimal control, the method of Lagrange multipliers, Ruccato
equasion.
1. Andreev Yu.N. Contol by finite dimensional linear objects. Moscow: Nauka, 1976. 424 p.
(in Russian).
2. Roytenberg Y.N. Automatic control. — Moscow: Nauka, 1971. 396 p. (in Russian).
3. Butkovskiy A.G. Theory of optimal control by distributed parameter systems. Moscow:
Nauka, 1965. 476 p. (in Russian).
4. Butkovskiy A.G. Methods of systems with distributed parameters. Moscow: Nauka, 1975. 568
p. (in Russian).
5. J.-L. Lions. Optimal control of systems described by partial differential equations. New York:
Wiley, 1972. 414 p. (in Russian).
6. Sirazetdinov T.K. Optimization of distributed parameter systems. Moscow: Nauka, 1977. 480
p. (in Russian).
7. Chikrii A.A., Eidel'man S.D. Game control problem for quasi-linear systems with fractional
derivatives of Riemann-Liouville. Cybernetics and Systems Analysis, 2012. no. 6, pp. 66–99
(in Russian).
8. Eidel'man S.D., Chikrii A.A. Dynamic game approach problem for equations of fractional
order. Ukr. mat.zhurn. 2000, vol. 52, no. 11. pp. 1566–1583 (in Russian).
UDC: 004.7:004.9:681.518
A WAY TO ORGANIZE EFFECTIVE DATA
EXCHANGE IN NETWORK-BASED CONTROL
SYSTEM FOR DYNAMIC OBJECTS
S.V. Pavlova, Yu.P. Bohachuk, S.V. Melnikov, O.Yu. Gospodarchuk
International Research and Training Centre for Information Technologies and Systems
of the National Academy of Sciences of Ukraine and Ministry of Education and Sciences
of Ukraine, Kiev, Ukraine
Introduction: Perspective air traffic control and air traffic management systems
will use global telecommunication structure based on multiservice network. The use
of existing network protocols and communication channels in multiservice network
for remote control of manned and unmanned aircrafts may be hampered by
92
transmission delays and information loss.
Purpose: The purpose of the work is to give an analysis of existing and
perspective network protocols and techniques in terms of suitability for use in
multiservice networks for remote control of dynamic objects and estimate the impact
of control data transmission delays on quality of remote control of dynamic object
using the task of aircraft trajectory control as an example.
Results: The major factors that make an impact on quality of work of
distributed in navigational computer network aircraft control system are the network
delay that shifts in time data packets transmitted from an aircraft to the remote
control system and transmission network delay for command packets from control
system to the aircraft. It is shown that use of modern protocols and techniques makes
it possible to significantly enhance speed and cut delays for transmission of control
data over network structures within control system. Network transmission speed can
be increased in times when small amount of redundancy is introduced in the network
communication channel for given packet loss rate. Results of modeling of remote
system for aircraft trajectory control shows that it is possible to build distributed
control system that is invariant to control data transmission delays in a broad range
of delays (100-700 ms) which are typical for real-world networks.
Conclusion: To build effective control system with distributed informational
and executive resources one need to separate data exchange streams based on
importance for control quality and acceptable data transmission delays. Data
exchange protocols, channels and traffic routs should be selected based on properties
of specific informational streams. Structures and protocols that provide redundancy
and duplication of transmitted information should be considered. Selection of
specific data transmission protocols and techniques can be combined and
complemented with developed methods for control of high-speed dynamic processes
and proper distribution of control components between controlled object and remote
control system.
Keywords: network, network protocol, remote control, data exchange, FEC
technology, distributed control system, aircraft control, high-speed cycles control.
1. Doc 9750-AN/963, 2013–2028 Global Air Navigation Plan. International Civil Aviation
Organization, 2013. 128 p.
2. Melnikov S.V. Organizational principles of complex ergatic systems and structural desing of
remote control systems for dynamic objects. Cybernetics and Computer Engineering, 2012,
no. 168, pp. 70–79 (in Russian).
3. Taking Forward Error Correction (FEC) To The Next Level. Silver Peak [Official website].
White Paper. Available at: https://www.silver-peak.com/sites/default/files/infoctr/silver-
peak_wp_fec.pdf (accessed 4 June 2014).
4. QUIC: Design Document and Specification Rational. Google Documents [Official website].
Available at: https://docs.google.com/document/d/1RNHkx_VvKWyWg6Lr8SZ-saqsQx7rFV-
ev2jRFUoVD34/edit (accessed 4 June 2014).
5. Airworthiness and Operational Approval of Traffic Alert and Collision Avoidance Systems
(TCAS II) and Mode S Transponders. U.S. Dept. of Transport. Federal Aviation
Administration, 2002. 51 p.
6. Pavlov V.V., Pavlova S.V., Bohachuk Y.P. Method and apparatus for computer networks of
application process high-speed cycles control. Patent 83118 Ukraine, Int.Cl. (2006) H04L
12/66 G05B 15/02 G05B 17/00, 2008 (in Russian).
93
UDC: 007.12: 37.091.27: 612.825.8:613.685
INFORMATION TECHNOLOGY
OF PSYCHOPHYSIOLOGICAL MAINTENANCE
OF OPERATOR’S ACTIVITY HIGH RELIABILITY
V.V. Kalnysh, A.V. Shvets
Research Institute of Military Medicine of Ukraine Military Medical Academy, Kiev,
Ukraine
Introduction: Human reliability is a complex parameter, which has to take into
account semantic aspects, the pace of activity, complexity, intensity, and sequence of
tasks, information overload arising from this; various external influences, as well as
qualitative characteristics of activity. That is why technocratic understanding of
psychophysiological mechanisms of ensure human activity reliability is limited in
relation to human activity that requires the creation of medical information
technology for complex foregoing problem solving.
Purpose: Creation of information technology for the implementation of
psychophysiological ensure high reliability of operator activity.
Methods: Analysis of the results was performed using the following methods:
nonlinear regression, cluster analysis, factorial ANOVA using the data analysis
software system STATISTICA 6.1.478.0.
Results: The most important task for solving this problem is to build such
information technology which would take into account the peculiarities of human-
machine interaction. Therefore, it is advisable to use several approaches for its
realization. The first approach is to use special integrated indicators, taking into
account the fundamental characteristics of his organism (sex, age, severity of PVC,
etc.) influence on working person behavioral responses. The second approach aims
to determine the reliability of a possible reduction of the human impact on the
characteristics of the job. It makes the technology more demanding but
physiologically adequate in implementation when each operator is working at his
best that extremely narrow degree of freedom in the solutions choice, limiting its
effect on the solvable task parameters. The third approach is based on the using
feedback test data and ignores the obvious fact that the operator can work correctly
for a long time under low intensity presented tasks. To maintain the reliability of the
operator's activity in information technology a special correction unit and monitoring
unit psychophysiological qualities operator have been included. As a result of
performed analysis, the information technology to maintain high reliability of
operator activity has been created. It takes into account the information processes on
different levels of hierarchically organized ergatic system human — machine —
environment, and consists of several information blocks focused on assessing
correction and monitoring the reliability of the operator’s activity.
Conclusions: The fundamental causes of operator error based on the existence
of objective contradictions between existing imperfection of human knowledge
about controlled processes and its decision-making, as well as the incompleteness of
the rules governing the operator's actions in specific, unusual situations leading to
misinterpretation of the problems have been identified. A structural-functional
hierarchical system of operator’s activity reliability formation, taking into account
the effect of various factors in the ergatic system on the quality of work has been
94
proposed. The information technology of psychophysiological maintenance
operator’s activity high reliability consisting of several parts: the
psychophysiological assessment of reliability of operator's activity integral
characteristics, parameters of limited feasibility of activity and reliability profile of
activity based on the allometric model characteristics; correction reliability of an
operator using training occupationally important qualities; monitoring
psychophysiological qualities has been .
Keywords: information technology, hierarchical information model, allometric
model, operator’s activity reliability.
1. Voytenko A.M. Psychophysiological analysis of the erroneous actions causes of human
operator. Herald Baltic Pedagogical Academy, 2006, vol. 69, pp. 49–57 (in Russian).
2. Novak D., Mihelj M., Munih M. Dual-task performance in multimodal human-computer
interaction: a psychophysiological perspective. Multimedia Tools and Applications, 2012,
vol. 56, no. 3, pp. 553–567.
3. Himma K.E. The concept of information overload: A preliminary step in understanding the
nature of a harmful information-related condition. Ethics and Information Technology, 2007,
vol. 9, pp. 259–272.
4. William M. Mount, Deborah C. Tuček, Hussein A. Abbass Psychophysiological evaluation of
task complexity and cognitive performance in a human computer interface experiment. Neural
Information Processing: Lecture Notes in Computer Science. 19th Int. Conf., ICONIP 2012,
Doha, Qatar, November 12–15, 2012, vol. 7663, pp. 600–607.
5. Theerasak P. Information overload among professionals in Thailand. Journal of Information
Technology Impact, 2010, vol. 10, no. 3, pp. 171–200.
6. Akhutin V.M. Activity of Berg A.I. in the field of bionics and biomedical cybernetics.
Electronics and Communication, 1993, no. 1, pp. 13–16.
7. Derkach A.A., ed. Acmeology. Moscow: RAGS, 2006. 424 p. (in Russian).
8. Rembezy A.I., ed. Reliability and efficiency in engineering Handbook. Vol. 1.: Methodology.
Organization. Terminology. M.: Mechanical Engineering, 1986. 224 p. (in Russian).
9. Kotick M.A. Psychology and security. Tallinn: Valgus, 1989. 448 p. (in Russian).
10. Pavlov V.V. The Systems Man — Machine: Problems and Synthesis. Kiev: High School, 1987.
55 p. (in Russian).
11. Zarakovsky G.M., Pavlov V.V. Patterns of the ergonomics systems functioning. Moscow:
Radio and communication, 1987. 232 p. (in Russian).
12. Nikiforov G.S. Reliability of Professional Activities. Publishing House of St. Petersburg
University, 1996. 172 p. (in Russian).
13. Zazykin V.G., Chernyshev, A.P. Acmeological Problems of Professionalism. Moscow: NIIVO,
1993. 134 p. (in Russian).
14. Nebylitsyn V.D. The operator’s reliability in the complex control system and its physiological
factors. Psychophysiological Study of Individual Differences. Moscow: Science, 1976, pp.
194–208 (in Russian).
15. Nersessian L.S., Konopkin O.A. Engineering Psychology and the Problem of an Engine
Operator’s Reliability. Moscow, 1978. 240 p. (in Russian).
16. Tolochek V.A. Modern labor psychology: Textbook. St. Petersburg.: Peter, 2008. 432 p.
(in Russian).
17. Kalnish V.V. Information models of the reliable operator activity formation. Clinical
informatics and telemedicine, 2009, no. 6, pp. 18–25 (in Russian).
18. Makarenko M.V., Lizogub V.S., Kozhemyako T.V., Chernenko N.F. Age characteristics of the
speed of central information processing in persons with different levels of functional mobility
of nervous processes. Int. Journal of Physiology and Pathophysiology, 2011, vol. 2, no. 4, pp.
335–341.
19. Dikaya L.G. Problems of the modern labor psychology. Psychological Journal, 1992, no. 3,
pp. 24–41 (in Russian).
20. Kalnysh V.V., Shvets A.V. Effect of intense 24-hour shift work on reliability of operators’
95
activity. Human Physiology, 2012, vol. 38, no. 3, pp. 294–302.
21. Pushkin V.T. Reliability problem. Moscow: Science, 1971. 189 p. (in Russian).
22. Shvets A.V., Kalnish V.V. Peculiarities of different psychophysiological statuses’ influence on
reliability of operator’s activity. Military Medicine of Ukraine. 2009, no. 1, pp. 84–91
(in Ukrainian).
23. Nagel E., Newman J.R. Gödel's Proof. NYU Press; Revised edition, 2008. 160 р.
24. Gelfand I.M., Gurfinkel V.S., Tsetlin M.L. About the tactics of the complex systems managing
in relation to physiology. Biological Aspects of Cybernetics. Moscow, 1962.
pp. 66–73 (in Russian).
25. Kalnish V.V., Shvets A.V., Levіt Jo.R. Gender features of reliability of operator’s activity.
Journal of National Academy of Medical Sciences of Ukraine, 2009, vol. 15, no. 4,
pp. 755–768 (in Ukrainian).
26. Changxu Wu, Yili Liu, Quinn-Walsh C.M. Queuing network modeling of a real-time
psychophysiological index of mental workload — P300 in event-related potential (ERP). IEEE
Transactions on Systems, Man, and Cybernetics, Part A: Systems and Humans, 2008, vol. 38,
no. 5, pp. 1068–1084.
27. Ena T.A. Hygienic and psychophysiological assessment of grid-control engineers’
occupational activity. Ukraine Journal of Occupational Medicine Problems, 2008. vol. 13,
no. 1, pp.13–19 (in Ukrainian).
28. Ena T.A., Kalnish V.V. Grid-control engineers’ occupationally important qualities. Ukraine
Journal of Occupational Medicine Problems, 2010, vol. 24, no. 4, pp. 11–20.
29. Kalnish V.V., Firsov A.G., Shvets A.V., Eshchenko A.I. Peculiarities of operator’s status
classification based on fussy logic. Cybernetics and Computer Engineering, 2011, vol. 166,
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Ukrainian).
UDC: 519.6+612
A FORMAL ANALYSIS OF MECHANISMS
INCREASING ARTERIAL PRESSURE
R.D. Grygoryan
Institute of Software Systems of National Academy of Sciences of Ukraine, Kiev, Ukraine
Introduction: Arterial hypertension (AH) is a multi-factor disease indicated by
an elevation of end-systolic and end-diastolic peaks of arterial pressure (AP).
Currently, AH’s cure is symptomatic and palliative because our understanding of
mechanisms controlling AP is not comprehensive.
The purpose of the paper is to propose an extended view of mechanisms
regulating long-term level of mean arterial pressure (MAP).
Results: To reach this goal, the energy theory of reversible adaptation is used.
The theory ensures that in vertebrates (in particular, in humans) there is a multi-scale
energy megasystem (EMS) fighting against continuously lack of ATP in every cell.
EMS is a complex system constituted of multiple partners. It is shown that cell-scale
mechanisms balancing mean rates of ATP synthesis and consumption are
functioning in two-side relationships with organism-scale mechanisms. The
cardiovascular system (CVS) is a structural-functional part of EMS that materially
provides both the mitochondrial respiration and mitochondrial enlargement (via
hypertrophy/proliferation) in every cell. Under stable organism-scale physiology
indicated in form of a stable energy consumption rate, the level of MAP inversely
correlates with a total surface of cells mitochondria. On long-term scales, lung
96
ventilation, blood erythrocytes amount, and blood glucose are also in inverse
correlation with MAP. These reciprocal relationships suppose that there will be an
individual normal value of AP. This value does depend on relative investments of
EMS’s sub-units in providing of ATP synthesis.
Conclusions: An increase of MAP in CVS will appear every time when the
remained partners in EMS cannot properly compensate the lack of material incomes
into cell mitochondria. This general view of roles playing by CVS and MAP in
organism suggest that AH is rather a compensatory response of entire organism to
energy lack than a disease.
Keywords: arterial hupertension, energetics, circulation physiology, models.
1. Ferrari A.U. Modifications of the cardiovascular system with aging. Am. J. Geriatr. Cardiol.
2002, vol. 11, no. 1, pp. 30–33.
2. Rhian T.M. New insights into mechanisms of hypertension. Current Opinion in Nephrology &
Hypertension. 2012, vol. 21, issue 2, pp.119–121.
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UDC: 004:519.256:616.12
DESIGN FEATURES OF THE MEDICAL
INFORMATION DECISION SUPPORT
SYSTEM BASED ON DATA MINING
G.V. Knishov1, A.V. Rudenko1, E.A. Nastenko1, 2, A.V. Yakovenko2,
S.O. Siromaha1, S.S. Galych1
1Amosov National Institute of Cardiovascular Surgery of the National Academy of
Medical Sciences of Ukraine, Kiev, Ukraine
2National Technical University of Ukraine “Kyiv Polytechnic University”, Kiev, Ukraine
Introduction: Tendency for data mining today is great. Often, in the datasets
there is missing implicit knowledge that can be obtained with the help of modern
information technologies and methods of data mining. Use of this information
technologies allows automatization of processes for extraction of data that help to
get interesting knowledge and regularities. The formalization of semistructured and
unstructured tasks is no less important.
The integration of statistical methods and database management systems allows
to create an effective decision support systems for various purposes.
Improving the efficiency of treatment can be achieved by applying data mining
methods.
The purpose of this work is the description of the stages of design of
information system based on data mining for prediction of complications and
decision support.
Results and discussion: The developed information system consists of a
database module, data mining module and generation decisions making module. The
generation module of decision making presented as a custom application. The
database module allows to organize and store information. The basis of the module
of data mining is the algorithm that allows to calculate not only the prediction of
complications, but also to determine the annual indicators of significant risk factors
which is useful in making medical decisions. The first stage of the algorithm is the
comparison of statistical methods to determine the most effective. The second is the
construction of mathematical models to forecast the development of complications
chosen method. The third is the comparison of risk factors and outcomes models.
This provides the forecast of the development of complications. In addition, it
provides the tools necessary for the correction of treatment. Under the previous
comparative analysis revealed that the binary logistic regression gives a higher
percentage of correct assignment, the sensitivity and specificity which is indicative
of high quality of the resulting model. A method MDR helps to identify a hierarchy
relationships between risk factors and systematic communication themselves. It
gives the possibility to determine the direction, strength of influence and to which
extent the factors with the help of entropy.
Conclusions: A medical information decision support system is developed. It
allows to identify high-risk patients. A retrospective evaluation of prognosis of
complications was also carried out that allows dynamically optimize the structure of
the therapeutic measures to reduce the risk and severity of complications in the early
postoperative period in patients with coronary heart disease after coronary artery
bypass surgery.
98
Keywords: Medical information system, decision support, data mining,
correction of the treatment process.
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