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

The article is devoted to the peculiarities of eclecticism in the central part of the city of Rostov-on-Don at the turn of the XIX - XX centuries. The Russian architecture in the years 1840-1850. prevailing eclecticism. All the variety of its variants is reduced in the Russian architecture in two varieties: the first of which dates back to the tradition of a warrant (neogrek, Renaissance, Baroque, Rococo, pampeyansky), and the second - to the non-classical heritage (Byzantine, Russian, Gothic, Romanesque styles). In Rostov architecture became widespread both varieties. This was facilitated not only the diversity of life in the city, the intensive development of trade industry, generating a variety of new types of buildings, but also the technical progress by which the means of production have changed.

Keywords: city​​, eclectic architecture, building, shape

To study complex sonar systems, the method of decomposition was suggested. The peculiarities of the method applied to the sonar systems were considered. A four-level hierarchy of decomposition subsystems is proposed. A scheme of the first level of semantic decomposition was presented. Controlled modules allowed to build adaptive systems were described.

Keywords: decomposition, hydro speaker systems, hierarchy of subsystems

The process of sylvinite ores desliming with ultrasonic treatment is considered. The influence of frequency, intensity and duration of impact to the insoluble rest removal efficiency of sylvinite ores crystals is defined. The optimum mode of sylvinite ores desliming with ultrasonic treatment is established.

Keywords: desliming, desliming degree, sylvinite ore, ultrasonic treatment, insoluble rest

  This paper discusses the problem of controlling the characteristics of sonar multibeam receiver antennas. Hydro acoustic means, such as side-scan sonar, profiler, sonar, multibeam sonar, are used extensively for remote determination of the parameters of media for environmental management. In the article the technique of controlling the phase-frequency characteristics of the receiving antennas multibeam echoes sounders. The study method allows the measurement of the phase-frequency characteristics of antennas in a hydro acoustic tank which size is less than length of a near field of the reception aerial.

Keywords: Conservancy, multibeam echo-sounder, seabed research, underwater acoustic

  For the previously proposed microphone system with adaptive control algorithm was investigated directional characteristic accuracy of the determination the angle of the sound source. The dependences of the absolute deviation on the angle of signal arrival of the sound source, defined by the spread of sensitivities directional microphone system were received.

Keywords: adaptive algorithm, microphone system, accuracy of localization, control characteristic orientation, directional microphone, space-time processing

In deciding on the role of professional and applied physical training must be based on needs and goals dvinatelnoy activity Occupational Health professionals have devoted themselves to their profession, many godv, and given the state of the physical fitness of students enrolled in higher education institutions and economic profile similar to it. These two aspects are interrelated and constitute a single process.

Keywords: Physical education, physical abilities, motor activity, manufacturing operations

Information about authors of issue №4 p.2 (2012)

Keywords: authors

Information about authors of issue №4 p.1 (2012)

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Showing the use of clustering of business processes of industrial enterprise in the mechanism of adaptation processes and identified prototypes for each of obtained clusters. The proposed approach reduces the analysis of the processes and their implementation, which contributes to efficient operation of the mechanism of adaptation process under the order in the information environment.

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Information about authors of issue №4 (2011)

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