Journal of Applied Informatics

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Andreev V.

Degree	Chuvash State University
E-mail	andreev_vsevolod@mail.ru
Location	Cheboksary
Articles	The determined chaos and the information coding Intensive growth of the processors power, bringing to nothing many traditional cryptographic decisions, stimulates development of new principles of coding. Application of the dynamic determined chaos theory is one of alternative approaches here. In this work two algorithms of the information coding on the basis of the determined chaos are developed and investigated. As the generator of chaos it is used Lorentz attractor. Optimum parameters of coding are found. Read more... Virtual organization of the Internet-enterprises on the basis of multi-agent approach This work is devoted to development of the virtual Internet-enterprises on the basis of multi-agent approach, capable to give, for example, services on loading file content. The multi-agent system consists of some «intellectual» information web-agents, taking the information from various sources and uniting it in a single whole. Read more... Recognition of hand-written symbols with application of neural network technology The recognition problem of any hand-written symbol is difficult with the big a number of features. But this task represents significant practical interest, as creation of effective recognition algorithm would allow, in particular, save time for record of the information from the documents on the computer, having excluded from this system of the man. In the given work the program is created which capable to scan from graphic file symbols of the certain group — figure from zero up to nine. Then there is a preservation of the information in a textual file. Read more... The development of complex system of forecasting of cash dispenses and devices of self-service functioning Paper is devoted to development of complex system of forecasting of functioning of cash dispenses and devices of self-service networks. On the basis of the results of the forecasting which are given out by the complex, and having broken city on «reaction sectors», probably more effectively to use human, material and other resources, and also a transport situation on roads. Read more... Program package for the optimal parametrical identification of dynamic models: application for forecasting of socially— economic system dynamics of the USA In this work the program package for optimal parametrical identification of nonlinear models is developed. The algorithm of Levenberg-Marquardt in Fletcher's updating is applied. The developed program package is applied for researching of the mathematical model describing dynamics of socially-economic system of USA. Earlier such mathematical models have been used for the analysis of socially-economic system of Russia and have shown the suf¬ficient adequacy. Read more... The device and software for continuous monitoring of cardiovascular system rhythms Cardiovascular system performs important functions in the human body. At the same time, according to statistics of the World Health Organization the diseases of cardiovascular system hold the first place in the world among reasons of death. In this regard, in medicine of critical states the development of diagnostic methods of cardiovascular system functioning, including computer-supported technologies, is very important. In studies presented in this paper, the device, including software for data processing, is developed for tracking in a continuous mode of the cardiovascular system functioning of person. The new approach is that the device monitors continuously the heart rhythms of a person without his or her direct active targeted actions in this area. This eliminates the factors that depend on the human subconscious and which may affect on the monitoring result. The device, if at some point in time there are abnormalities in the cardiovascular system, informs the person about this. The system does not put medically accurate diagnosis, but it is an instrument of early warning. Based on this information the person has the ability to promptly seek medical attention. The prototype was developed on the base of Arduino + Bluetooth HC-04. The interface was written in Microsoft Visual Studio 2010. Data analysis is carried out on a PC using MATLAB package. Read more...