IKBFU's Vestnik

2013 Issue №10

Generation of exact solutions of Fridman equations leading to Cardy–Verlinde formula by Darboux transformation

Abstract

It is considered a possibility of generation of exact solutions for Friedman equations by Darboux transformation, for which Cardy — Verlinde formula is valid. Two modifications of Darboux transformation are offered, which let generate such solutions. Exact solutions are obtained, for which Cardy — Verlinde formula is valid at least near some singularities.

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Features of practical implementation of the system of control over the design process within CAD CS complex technological objects

Abstract

The main problems the process control system design control of complex objects in CAD. The main structural solutions and implementation features of subsystems and modules developed by managing complex УК-01. The problems of the universality of the Criminal Code with respect to data sources, build and implementation of the original information and special software УК-01.

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Effect of change in density of compact and spongy bone tissue on the stress and strain state of the bone model samples

Abstract

Influence of change of density of compact and spongy bone tissue on the stress and strain state of model samples of the bone. Modeling of the stressstrain state of the bone tissue was conducted in the software package ANSYS using finite element method. It is revealed, that change of density of a spongy component of sample leads to change of a prevailing type of deformation influencing on distribution of stress and strain.

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Method of analysis of electromagnetic safety of radio electronic means by external handicaps

Abstract

The approach to the analysis of electromagnetic safety of radio electronic means based on is frequency the limited models of the characteristic of spectral density of power of a source of handicaps and characteristic frequency selectivity receptor of handicaps is offered. For a complete rating of electromagnetic safety the integrated criterion including power criterion and criterion of blocking is offered. The power criterion takes into account the contribution of separate radiations of sources of handicaps to total power of handicaps, and also contribution of power of products intermodulation, caused by effect intermodulation in receptor of handicaps. The criterion of blocking takes into account the contribution of partial of factors of blocking from separate sources of handicaps.

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