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«System analysis and applied information science»

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No 1 (2015)
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System analysis

4-9 2105
Abstract

The principles of constructing mathematical models of unmanned aircraft systems as complex systems consisting of a plurality ofsubsystems, each of which is considered as a system. In this case, the relationship between the subsystems are described by equations based on the topological graph theory, and for the preparation of component equations describing the dynamics of the subsystems is proposed to use differential equations discontinuous type based on systems theory of random structure.

10-14 2256
Abstract

In article is described the analysis of stability of classification functions when processing text information on the basis of application of various methods of transformation of data. That the educational text in this research is considered as formal and logical education, as its main characteristics 14 statistical parameters making factorial space of objects of research are determined. The analysis of stability of the classifying rules is carried out on the basis of the analysis calculated for each of methods of transformation of coefficients of a variation.

15-23 858
Abstract

The problem of execution management of client’s tasks and optimal management of cluster’s computing resources is one of the key problems in grid. In this paper the detailed investigation and comparison of task schedulers and task scheduling techniques has been performed with respect to the result quality and throughput. The results of conducted computing experiments have found out the critical scheduler’s components and preferable scheduling approaches which are promising and indicate the ways of further development of grid optimization methods.

24-30 797
Abstract

New approach for optimal routing of information flows is developed based on service-oriented architecture. To find the shortest path it’s require to take into account the QoS-parameters such as delay, jitter, bandwidth, lost of the packets and cost of telecommunication resources.

Management of technical objects

31-34 744
Abstract

In the paper is considered a system of automatic control of the temperature in a room and is shown a method of its’ synthesis by using components of Simulink software package.

35-40 770
Abstract

This paper focuses on the development and simulation of maximum wind power extraction algorithms for inverterbased variable speed wind power generation systems. System simulation results have confirmed the functionality and performance of the system.

41-46 2352
Abstract

The original semiempirical model of turbulent flow of air in an interface of an aircraft surface is described in this work. Based on this model the computer system allowing to simulate aerodynamic processes around an aircraft and to calculate it’s aerodynamic characteristics was developed. These characteristics are used by aircraft designers for an assessment of quality and properties of an aircraft.

47-52 2313
Abstract

For range portrait formation at usage ultrabroadband linearly frequency-modulated signal in radar it is necessary to consider all distortions of an electromagnetic wave on a radio route. At observation over circumterraneousobjects the signal transits through an ionosphere. The electromagnetic wave in it will be exposed to non-linearity distortions, which transform of signal time structure. It leads to distance error origin. For its compensating it is necessary to use the mathematical model of signal distortions in an ionosphere.

53-59 761
Abstract

Set of parameters characterizing the process of interdependence rock crushing and the technique of joint optimization of the above parameters. Recommendations for use of the algorithm in the workplac

Data processing and decision–making

60-67 2378
Abstract

The main problems of old text document restoration and approaches to their solution during restoration of images of these documents by methods of information technology are considered. Primary source documents are not changed, but their digital copies can be modified with orientation on different applications and according to the different levels of processing



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ISSN 2309-4923 (Print)
ISSN 2414-0481 (Online)