Is calculated the mean distance between the diamond grains on grinding wheels by their characteristics. Is carried out of the duration, frequency and form of discharge impulses in electro erosion profiling of diamond grinding wheels.

Keywords: electro erosion profiling, correction, the distance between the diamond grains, frequency of discharge impulses, the duration of discharge impulses.

In this paper, the task of achieving the optimal bandwidth telecommunication channels. Focuses on technical aspects of managing bandwidth channels using virtual organization switched channels. Formally defined parameters affecting the guaranteed delivery service. A model and management solution parameters guaranteed delivery of information in the communication channels, based on the methods of the theory of stochastic processes theory and risk analysis.
Keywords: reliability of telecommunication systems, telecommunication systems modeling, stochastic processes, optimal risk management.

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    The structural model of functional mechanisms with stressed closed-loop contour which is used in the mechatronic systems is offered in this article. The problems of loading mechanisms forming are analyzed here. The work of self-regulating loading device is considered on the example of cutting mechanisms. The results of experimental investigations are represented.

Keywords: closed-loop contour, energy saving, reducing machines, loading mechanisms.

Carried out a comprehensive analysis of the factors governing the strength and resilience foams, for the manufacture of foam concrete mixes. Found that lowering the temperature of mixing water helps to improve the structural properties of the foams. 
Keywords: surfactants, foam, lyotropic liquid crystals.

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