2002. № 9

Aviation technics and technology

Zakharov M. A.

In the given activity with the purpose of increase of accuracy of modeling the new mathematical model of the aerodynamic characteristics with introduction of exact (non-linear) expressions of components , flow(streamlining,) appropriate to structure is offered. This model is unified for exact (non-linear) and approximate (linearized) expressions . It is supposed, that the static (non-linear) components can be determined under the data of wind-tunnel tests, and the values rotary derivative are updated. Two versions of analytical relation are offered and gives their analysis. The comparison of these functions is carried out(conducted) and their derivative with known [8]. On the basis of adopted relation there is a solution of a relaxation equation with the help of the program "MathCAD". Is considered(examined) errors of a linearization of deviation(rejection) x - and non-stationary making , appropriate structure of flow(streamlining).

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Economics and management

Rosina O. M., Shirshova A. U.

Communicative technologies (imagemaking, public relations etc), as means of sampling and preparing partners' or society reaction, stands for a vanguard when related to financial diplomacy, being at the same time the methods of diplomacy itself. Practically, the aim and the dominant idea of financial diplomacy is achieving financial and economic efficiency using the methods of diplomacy. Suggested technologies can be regarded as means generating such methods. The innovation that the authors presents is imagemaking using exclusive method of communicative technology - virtual psycoharmony (psychological harmony) of image (of personality, community, man-machine system). That method has a wide sphere of application in business, technology, fine art - the examples are systems "pilot - plane", "investors - stock market", "artist - spectator" and others.

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Mathematics. Physics. Mechanics

Khrapko R. I.

A specific experiment was proposed in Oct. 1999 as a proof that a circularly polarized plane wave with infinite extent carries spin angular momentum in contradiction with the widespread point of view. This conclusion implies existence of classical electrodynamics spin. It is shown that absorption of a circularly polarized beam cannot be described in the scope of the Maxwell theory but requires an introduction of a classical electrodynamics' spin tensor. The latter paper of Allen et al. is criticized.

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Navigation systems

Nikitin E. P.

Teasurements of have been made of the resonant frequences of directional antennas, biotensors in the metric - decimetre - centimetric - wave band. The biotensors were switched to the wavequides of electromagnetic wave generators.

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Nikitin E. P.

Distant examination the petrolium product pipe in the route Daugavpils - Ventspils has been made from a helicopter applying the biolocation method. The operator in the co-pilot's seat manipulated with directional antennas and biotensors usnally used in search for water and mineral deposits.

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Radio engineering. Electronics

Bakulev P. A., Sychev M. I., Nguyen T. L.

The IMM algorithm on two α-β filters for tracking trajectory of a maneuvering target is considered. The results of statistical modeling are given.

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Chikin A. V.

In this paper the author proposes an effective information transfer criteria in memoriless binary symmetric channel for comparison and selection the best of concerned block codes. Using the suggested criteria a method of search the optimal code parameters is obtained. Only the most spased linear block codes is considering here. Also some examples, which demonstrate the application and effectiveness of the method, are given. A recommendation to summarizing the method for more wide class of linear block codes is given in the conclusion.

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Chikin A. V., Zimin A. G., Ionov I. A.

In this paper the authors propose a method to compare block codes using a quality of information transfer criteria in memoriless binary symmetric channel. Thereto an "effective speed" of information transfer concept is introduced. The exact means of "effective speed" are calculated for some block codes.

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