Vol 8, No 1 (2010)

In the introduced observation application opportunities of statistic theory of antennas (STA) of computer statistic imitation modeling method (SIM) are examined for internal decision making. STA objects are described as steps of SIM method; basic data are introduced as well as probable criteria to estimate final results of SIM. «Black box» method defines targets and goals of modeling. SIM-complex non-reflective systems development specifics are mentioned. Distribution laws of amplitude, phase, geometric, frequency and time errors are recommended to introduce and investigate, applying SIM-method and limited theorems (LT) of probability theory (PT). SIM-methods of application and testing are described, which are structured on the base of one measured stable family laws of LT PT. Test sequences are realized with Monte-Carlo method of random numbers (RN), following the one measured stable laws. Structural principles of static and dynamics SIM-models for STA objects are described, and also their adequacy and reliability are introduced.

The paper presents mathematical models for distributed storage and processing of high-dimensional data. The models presented are based on the threshold schemes and provide a high degree of fault-tolerance. Presented parallel algorithms use modular arithmetic to reach noticeable speed-up as compared to equivalent serial schemes, what makes the proposed algorithms suitable for large-scale real-time systems. Implementation possibilities are also discussed with the focus on NM6403 neuroprocessor

The technique of numerical modeling of interaction of electromagnetic radiation with a non-uniform layer magneto-dielectric is offered. The differential equation for factor of reflection of a wave from the truncated layer is received.

The methods of assessment and finding index of fractal self-similarity are considered in the article, and the relative analyses of different types of wavelet-transformation of quasi-continuous scan for compression satellite images are proposed. The results of calculating experiments show the possibility of using different types of wavelet-transformation for solution formulated task

The algorithm of determination of correcting ability of the block codes constructed on the basis of the convolution coder is developed, at use of a way of the syndromes decoding, considering possibility of correction of errors of bigger frequency rate at the expense of determination of syndromes of corrected and found out errors and representation of correcting ability in the form of non-integral number.

Results of experimental researches of pressure in the protected plastic duct applied on cable communication lines, created are presented at water freezing in the duct. The experiment technique is described. Estimations of pressure the duct are presented.

Positive feature of the multi-alphabetic adaptive code is uniform distribution of elements of the cryptogram. For achievement of it during enciphering build the histogram on which define a place of a failure. One of two values of the certain integral necessarily takes from a place of a failure, thus leveling target distribution. On the reception side send values of the top and bottom limits of integration which are elements of the cryptogram

This article focuses on methods for assessing and determining the optimal target availability of client service providers, as well as the reliability of its transport network as a whole, taking into account the requirements for this service. The above method can be used as a service provider, its partners and customers for mutual control of SLA.

The method of evaluating the complex safety of computer systems and networks on the basis of expert judgments is proposed. The index of the level of complex safety is built on the base of aggregation of values from all levels of the hierarchy of factors on the basis of qualitative data about the levels of factors and their relations of order on the same level of hierarchy.