ISSN 0021-3454 (print version)
ISSN 2500-0381 (online version)
Menu
Summaries of the issue

INFORMATION TECHNOLOGIES AND SYSTEMS

PARALLEL PERFORMANCE OF STOCHASTIC ALGORITHMS Sergey Kovalchuk, Boukhanovsky Alexander V
3
Issues of parallel algorithm performance models construction for various task classes are discussed. Parametric approach which allows parallel speedup description in form of deterministic function is proposed. Parameters of this function are stochastic variables that characterize objective properties of algorithm and are independent of software and hardware implementation. This makes possible analytical study of dependences between performance probabilistic characteristics, algorithm and parallel architecture.
EFFICIENCY ESTIMATION OF THE SCANNING ROBOT APPLICATION FOR INFORMATION SEARCH IN THE INFORMATION NETWORKS Заболотский В. П., Rafael M. Yusupov, Демидов А. А.
11
The index method for the efficiency estimation (on the test results) of the scanning robot application for search and collection of required information in the information network has been examined. Scanning information arrays can contain the multiplicity information having the different value for the utilizing person. This method allows rather concerning to estimate and compare on the efficiency of different methods of the using network scanning robot. It don’t demand fair quantities input data and the efforts are interpreted simply.
15
For construction of perspective information systems (IS), first of all global computer, focused on use in institutes of the government, financial structures, the enterprises of a military-industrial complex, are necessary эволюционирующие adaptive means of monitoring of safety in structure IS. Architectural decisions of means of intellectual protection IS and bases of methodology of monitoring safety IS focused on a principle of biosystem analogy are considered(examined).
METHOD OF SEGMENTATION OF THE IMAGE FOR RECOGNITION OF PRINTED DOCUMENTS Korobeynikov Anatoliy Grigorievich, Hoang Giang, Кузнецова С. Н., Тронников И. Б., Veniamin Semyonov
20
In work methods of recognition of printed documents are briefly considered, their basic lacks are shown. Manyscales segmentations on the basis of a dynamic local card of communication of the image the method is developed for reception of a hierarchical tree of blocks of documents.

DEVICES AND SYSTEMS OF AUTOMATIC CONTROL

PERIODIC MODES IN SYSTEMS OF AUTOMATIC CONTROL WITH PULSE-WIDTH MODULATIONS OF THE SECOND KIND Sergey V. Luchko, Sergey Yu. Baluev, Mikhail A. Vatutin, Рогачев В. А.
25
Periodic modes in systems with pulse-width modulation of the second kind are investigated. The mathematical model of discrete system of automatic control as system discrete the equations is resulted. Conditions of existence of a periodic mode are received. The example for system of the second order is considered and results of modelling are resulted. Application of a periodic mode for vibrating smoothing nonlinearity is considered, that promotes reduction of errors in automatic systems.
32
A sufficient condition for nonlinear sampling system asymptotic stability at large is obtained. Places of system matrix columns depend on phase co-ordinate vector. It is demonstrated possibility to obtain the less hard sufficient stability condition with phase co-ordinate scale changing. Sometimes it is possible to obtain the necessary and sufficient stability condition.

COMPUTING TECHNIQUE

36
An approach is represented for estimation of feasibility of hard real-time program applications that are build on the base of multicore processors. The class of computational models is regarded that permit asynchronouse tasks with static priorities, job preemption and job migration between the processors. The method of task response time estimation is suggested for such class of computational models.
VERIFICATION OF FILTERING RULES OF SECURITY POLICY BY MODEL CHECKING Полубелова О. В., Igor V. Kotenko
42
An approach to verification of filtering rules for detection and resolution of filtering anomalies in computer network security policy is proposed. The approach is based on model checking method. The models of computer system, firewall, and filtering anomalies, which are used for verification of filtering rules by proposed method, along with algorithms of filtering anomaly detection are considered. Based on those models, methodic for verification of filtering rules of security policies is proposed.

GYROSCOPIC AND NAVIGATION SYSTEMS

48
The results of development of a pendulum pulse-rebalance accelerometer unit (AU) calibration procedure are presented. For AU used on mobile objects with a smaller acceleration range, development of a procedure for calibration in the AU operating range of angles is relevant. For calibration the AU is mounted on a single-axis turn-table which provides the possibility for the AU to be fixed in two opposite positions at an angle of 45º relative to the axis of rotation. The experimental results presented provide support for the efficiency of the proposed calibration technique.

ELECTRONIC AND ELECTROMAGNETIC DEVICES

IDENTIFICATION OF SOME PARAMETERS OF THE ENGINE MEMBRANE TYPE Лошицкий П. А., Шароватов В. Т.
54
In the article established, that application of membrane engines in the control systems restrains temper from incompleteness of descriptions of catalogues of shells, necessary for the construction of its mathematical model. It is shown, as on the basis of principles of work, features of construction and properties of material of shell it is possible to fill in this blank identification of failings parameters.
EXPERIMENTAL COMPLEX FOR STUDYING OF HIGH-SPEED EFFECT OF FLOWS OF METEORIC PARTICLES ON A SPACE VEHICLE SURFACE Boris I. Poletaev , Vladimir D. Atamasov , Alexander V. Belyankin, Dmitry Yu. Mikhailov , Alexander V. Levandovich , Maxim M. Poluyan
61
The description of the experimental complex is resulted, allowing to simulate space conditions, for carrying out of experimental researches of influence of factors of a natural and artificial origin on space vehicle functioning. The complex allows to receive the data used at designing of a space vehicle, on change of physical characteristics of external elements of onboard systems and degradation of their properties in the course of flight operation.
BALLISTIC CONSTRUCTION OF COMMUNICATION SYSTEMS AND PASSIVE RADIOLOCATION OF LUNAR SURFACE Nikolay F. Averkiev, Васьков С. А., Салов В. В.
64
Principles of ballistic build-up of systems of space vehicle of link and passive radiolocation of a lunar surface are observed. The position of initial phase state vectors of space vehicle in Lagrange points of a libration of system an Earth-moon with the purpose of security of the best survey of a lunar surface on the fixed time frame is justified. Estimations of the area parameters of survey of a lunar surface are given by system of the space vehicles had in Lagrange points of a libration of system an Earth-moon.
EQUIPMENT FOR RESEARCH OF HF IONOSPHERIC MULTIPATH PROPAGATION EFFECTS Колчев А. А., Шумаев В. В., Щирый А. О.
71
Description of equipment for research of HF ionospheric multipath propagation effects is given. This equipment based on chirpsounding hardware, which used frequently-modulated continuous wave (FMCW) signals. The functional structure of this equipment is described, it working algorithms is given. HF multipath propagation characteristics is computed by software on basis of chirpsounding data. Obtained HF multipath propagation characteristics are classified by empirical multipath models; empirical multipath model is a combination of the certain types of partitial HF rays.