Begell House Inc.
Journal of Automation and Information Sciences
JAI(S)
1064-2315
44
7
2012
T-Wave Alternans Modeling on Artificial Electrocardiogram with Internal and External Perturbations
1-14
10.1615/JAutomatInfScien.v44.i7.10
Leonid S.
Fainzilberg
International Research and Training Center of Information Technologies and Systems of National Academy of Sciences of Ukraine and Ministry of Education and Science of Ukraine, Kyiv
Tatyana Yu.
Bekler
International Research and Training Center of Information Technologies and Systems of National Academy of Sciences of Ukraine and Ministry of Education and Science of Ukraine, Kiev
T-wave alternans
artificial ECG generation
cardiovascular disease
external and internal perturbations
The generalized generative model of artificial ECG generation with specified amplitude and time parameters of informative fragments is proposed. The model allows one to generate artificial realistic shape signals with three types of T-wave alternans with internal and external perturbations. The generated test signal can be used to assess the quality of modern computer algorithms for level analysis of T-wave alternans when determining the risk of sudden cardiac death.
The Possibility of Using Roller Dampers in an Extended Frequency Range
15-21
10.1615/JAutomatInfScien.v44.i7.20
Victor P.
Legeza
Ukrainian State University of Food Technologies and National University of Life and Environmental Sciences of Ukraine, Kiev
roller damper
frequency range
dry friction
natural oscillation
vibroprotection system
The conditions for a usage of roller dampers for vibration protection of objects in the extended frequency range have been stated. It has been established that these conditions are related to the coefficient of a dry friction between a roller and a spherical surface of a working body of a damper and do not impose restrictions on the value of frequency of natural oscillations of a carrier body.
The Solution of a Minimization Problem of the Weighted Length of a Connecting Grid by Branch and Bound Method
22-33
10.1615/JAutomatInfScien.v44.i7.30
Oleg A.
Yemets
Poltava University of Economics and Trade, Poltava
Alexandra O.
Yemets
Poltava University of Economics and Trade, Poltava
minimization problem
connecting grid
linear placing
rectangular elements
admissible subset
The branch and bound method has been offered and realized for a minimization problem of the weighted length of a connecting grid at linear placing of rectangular elements. The rule of branching of admissible set on subsets has been considered. The estimation of an admissible set has been offered and proved. The illustrative example has been given.
Linear Regression Analysis of a Small Sample of Fuzzy Input Data
34-48
10.1615/JAutomatInfScien.v44.i7.40
Oksana V.
Seraya
National Technical University "Kharkov Polytechnic Institute"
Dmitriy A.
Demin
National Technical University "Kharkov Polytechnic Institute"
linear regression analysis
small sample
fuzzy input data
artificial orthogonalization
fuzzy clustering
The problem of estimating the parameters of the regression equation for a small sample of the initial data, where the conditions of observation are fuzzy, is considered. The technology of artificial orthogonalization of the results of a passive experiment is proposed, based on the integrated use of fuzzy clustering and the developed method of solving the fuzzy systems of linear algebraic equations.
The Problem of Identification by the Final Observation for the Multidimensional Nonlinear Stationary Equation of Quasi-optics with a Purely Imaginary Coefficient in the Nonlinear Part
49-61
10.1615/JAutomatInfScien.v44.i7.50
Natik S.
Ibrahimov
Baku State University (Azerbaijan)
complex-valued coefficient
identification problem
multidimensional nonlinear stationary equation of quasi-optics
variational inequality
The problem of determining the complex-valued coefficient of a multidimensional nonlinear stationary equation of quasi-optics with the purely imaginary coefficient in the nonlinear part of the equation is considered. The theorems of existence and uniqueness of solution of the identification problem are proved. The necessary condition in the form of a variational inequality for solution of identification problem is established.
An Iterative Algorithm of Estimating the Parameters of the Fractal Brownian Motion
62-68
10.1615/JAutomatInfScien.v44.i7.60
Valeriya V.
Bondarenko
Training Scientific Complex " Institute for Applied Systems Analysis of National Technical University of Ukraine "Kiev Polytechnic Institute"
fractal Brownian motion
Hurst exponent
volatility
iterative algorithm of estimating the parameters
For time series, which is a realization of the fractal Brownian motion (fBm), an algorithm of estimating its parameters: the Hurst exponent and its volatility, is proposed. The algorithm is illustrated on fBm data obtained by means of simulation.
The Integration of Heterogeneous Enterprise Business Models
69-82
10.1615/JAutomatInfScien.v44.i7.70
Pavel P.
Maslianko
National Technical University of Ukraine "Kiev Polytechnic Institute"
Alexander S.
Maistrenko
National Technical University of Ukraine "Kiev Polytechnic Institute"
heterogeneous enterprise business models
integration
enterprise entities
relations
specification of the entities of the system
integration model
The enterprise business models determine the enterprise entities and formalize relations between them. The subsequent integration of such business models is a prerequisite for enterprise engineering in a competitive market conditions. One can perform integration of the enterprise business models using the specification of the entities of the system. On the basis of the specification of the enterprise entities one can formalize both the notion of the "integration model" of the entities of the system and justify the necessity and sufficiency of integration of the enterprise elements of the system for its existence. The integration model allows us to formulate an approach to the implementation of business models using different modeling tools, as well as to justify their choice.