In article the sections method offered by professor Azarov V. N. for assessment of fractional composition of the dust arriving on air Wednesday is considered. Application of this method when processing results of the dispersive analysis of cement dust is described.

Keywords: dust, pass function, fraction, diameter of a section, probabilistic corridor of distribution

Dynamic changes of conditions of the business require the development of appropriate instruments at the present stage to support entrepreneurship. The article deals the analysis of adaptability as systemic characteristics of the object of management, and proposes a model of adaptive infrastructure of support of small and medium enterprises.

Keywords: adaptability infrastructure to support small and medium business, public Association of entrepreneurs, small and medium business

The article gets application multi-element piezoelectric transducers for ultrasonic high-speed flaw  detection on railway tracks. The processing algorithm of echo-signals from multi-element piezoelectric transducers was offered to get additional information about defect location to apply solution considering risk level more validly and to increase crack detection probability. The obtained algorithm was realized as software package. A set of experiments was completed for fourth-elements inclined piezoelectric transducer on a standard pattern for various positions to verify the processing algorithm. The experiment has shown that the echo-signals behavior allows to use the obtained algorithm for multi-element transducers at the high-speed flaw detection. Also it has emerged that the echo-signal shape at one element of piezoelectric transducer strongly depends on refracting prism geometry and relation position elements on prism.

Keywords: multielement piezoelectric transducers; ultrasonic methods; echo-signal; high-speed flaw detection

Information about authors of issue №2 (2011)

Keywords: authors

Information about authors of issue №1 (2011)

Keywords: authors