BogatyrevV. A.
Faulttolerance Computer Systems at Multifunctionality jf Modules .

     Comparison of two approaches to maintenance fault tolerance computer systems with use in part given up computing modules, having in an initial condition multifunctionality is carried out. The first approach is based on functional reconfiguration systems after detection of refusals, and the second on dynamic distribution of inquiries. It is shown advantages of the second approach.

Trenogin N. G., Terekhov V. I.
Optimization Tasks Solution for Information System According the Object-Oriented Approach .
      In the given article considered the basic principals of information system design using the object-oriented approach. The authors of this article proposed model of optimal allocation of information system components on network nodes. The given model is useful for solving optimal data distribution task in distributed database also.

Zhukov A. N.
Disaggregation in the Problems of Aircraft Engine Design
      In the paper, we discuss the synthesis problems of jet schemes, peculiarities of disaggregation process in the problems of internal design, and alternative method of developing detailed projects. Examples of forming variants of an engine of periodic operation are considered.

Usakov V. I., Eresko S. P., Skorniakov S. N.
Simulation Modeling of Gears with Use of Software Packages of the Engineering Analysis
      The method of a simulation modeling and choice of parameters gears at a design stage, powering up synthesis of a toothing, the kinematic analysis of transmission and an estimation intense the deformed condition is offered in view of collective interaction tooths. The method is realized with engaging packages ADAMS, ANSYS and specially designed program "GEARS". The simulation modeling has allowed to reveal factors not regulated by standard methods, for example, such as a variability of a reduction ratio, change of coordinate edging contact and influence of a total compliance tooths on character of their interaction. The given method also allows to realize monitoring of transmission in maintenance and to solve tasks of parametric diagnostics and prediction of a residual resource.

Pavlichenko I. P., Sheglov A. Yu.
New Technologies of the Computer Systems Protection. I. Delimitation Mechanisms of the Access Right to the File System and the Software of the Program Envronment Closure
      This article describes the technology of checking the access rights to resources of the computing system, distinguished by inclusion in algorithm of check of inquiry to a resource (object of file system, replaceable store, shared network resource etc.), alongside with the subject of access "USER", the subject of access "PROCESS". Article also describes the approaches to realization of basic mechanisms of protection the resources of the computing system (checking access rights, isolation of program environment etc.) within offered technology.

Fedorov M. V.
The Methods of Floppy Disks Identification .
      The article is devoted to the perspectives of using the diskette-based key carrier in modern information systems. The aim is to handle a problem of disk's unauthorized duplication. General techniques of selecting and forming the unduplicatable bdentification markers for floppy magnetic disk are examined. The analysis of two identification methods, using statistical data and structure features of tracks with standard format, is carried out. The variation of creating the magnetic markers, which allow to complicate the process of exploring the key carrier, is enounced.

Plesnevich G. S., Avdoshin S. M., Tarasov V. B.
Conceptual Specifications of Multi-agent Systems
      The methods of the conceptual specifications of rnultiagent systems are considered. The review of the main methods and languages for the conceptual specifications stated in the modern literature is given. Some results of the researches are being conducted on the chair of the information technologies "MATI" ≈ the Russia State Tech- nological University named after К. Е. Tsialkovsky are represented.

Chernodarov A. V., Patrikeev A. P., Gladkin S. M.
Bench Development of Onboard Estimating Filters by Application of Object-Oriented Technologies
      Problems of onboard implementation of extended Kalman filters (EKFs) are analyzed. Possible approaches to the solution of such problems are considered. A through technology intended for the development of onboard estimating filters, from the mathematical "accompaniment" to full-scale experiments, is justified. The potentialities of the stage of EKF bench development are revealed. A variant of the automation-equipped working place for software-and-mathe-matical support (SMS) as well as for hardware support of full-scale experiments is proposed. The role played by problem-oriented technologies in constructing the SMS is shown. For experimental studies of the U-D algorithm for an EKF and also of its guaranteeing version, comparison results are given.