Software & Systems

Articles of journal № 3 at 2009 year.

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31. Estimation of results of clusterization at usage of various criteria of quality [№3 за 2009 год]
Author: Киреев В.С.
Visitors: 16007
In given article quality of cluster solutions of a method of k-averages in sense of various criteria on a practical example is researched; the received results are compared to results of a method of the «pocket» clusterization offered earlier by the author, the superiority of this method is shown. On an example of one of clusters the practical difference as clusterization on structure of objects of clusters is estimated.

32. Parallelization of cfd computations using block-structured grids [№3 за 2009 год]
Authors: Смирнов Е.М., Зайцев Д.К., Якубов С.А.
Visitors: 14831
We discuss some features of effective usage of the MPI technology to solve resource-demanding CFD problems on cluster systems using block-structured computational grids. Recommendations are given for arrangement of the inter-process data exchange to increase the parallelization efficiency.

33. Parallel adaptive preconditioner CPR concerning to the flow problem [№3 за 2009 год]
Author: Горелов И.Г.
Visitors: 6550
The adaptive modification of Constrained Pressure Residual method of preconditioning are considered concerning to the systems that appears from discretization of systems of partial differential equations which describes multicomponent fluid flow in porous media. The numerical experiments using real parallel hydrodynamic simulator on the real oil fields in Western Siberia demonstrated efficiency of the method.

34. Web-server information security improvement with techniques of protection from investigation [№3 за 2009 год]
Authors: Semenkin E.S., Стюгин М.А.
Visitors: 11040
The approach to information security improvement based on informational control of the violator is considered. The algorithm of the technology of systems protection from investigation is presented. The approach is illustrated with two examples of technology implementation for web-server protection from aforethought attacks.

35. Making a knowledge model of technologies by means of discriminant algorithms [№3 за 2009 год]
Author: Пименов В.И.
Visitors: 10121
Features of representation in computer training systems of technological knowledge which describe the processes directed on manufacture of a material or information product are considered. The approach based on allocation of classes is offered.

36. Movement trajectory of the tool at multicoordinate processing construction [№3 за 2009 год]
Authors: Будник А.И., Кац Е.И.
Visitors: 14236
In article is considered a problem of milling tool movement at multicoordinate processing modelling. The construction algorithm of a tool movement trajectory is developed. At modelling of preparation processing on such trajectory it is possible to count on more exact representation of the processed surface.

37. «ASKON» software system use practice [№3 за 2009 год]
Authors: Родионов Л.Ф., Уютов А.А., Назарова И.А.
Visitors: 15538
«ASKON» company software products (KOMPAS – Autoproject, Vertikal) are widely used at machine building plants. In the process of using a set of questions arises, which you can solve through the data base update and edit.

38. Use of multi agents technologies for development of the built in portal expert systems [№3 за 2009 год]
Authors: Туманов В.Е., Лазарев Д.Ю.
Visitors: 12393
In article questions of development of architecture of the built in a portal expert systems on the basis of technology of program agents are considered. Program agents are intended for modeling of job of experts and production of a new professional knowledge, for interaction е expert system with a knowledge warehouse of subject-oriented scientific intelligence systems which are components of the professional competence centers in the Internet.

39. Program of disease diagnostics [№3 за 2009 год]
Authors: Жмудяк Л.М., Жмудяк А.Л.
Visitors: 17308
There was developed a methodic of diagnostics based on computation of diseases probabilities. This methodic is using multivariate distribution, repeatedly defined symptoms, analyses and other data, markers of viral hepatitis, etc – are considered. There was written a program that makes differential diagnostics between obstructive and hepatocellular jaundice with effectiveness 97 %.

40. The scheduling procedure as an integral-valued problem, for groups with one topical course [№3 за 2009 год]
Author: Шевелев С.Б.
Visitors: 11703
In work is brought original statement of the problem the timetable and is offered procedure of the timetable sheduling the educational institution as integer tasks without flows.

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