The article describes methods allows to control the degree of anisotropy piezoelectric ceramics based on doped phase PbTiO3. As a model of the object has been selected phase of Pb0,76Ca0,24Ti0,94(Cd0,5W0,5)0,06O3. The model phase was obtained by the following methods: by solid state reaction method and the chemical construction. For comparison phases obtained by these methods were used modern analytical research methods (DTA, TGA, XRF, XRD, power and tunneling microscopy, computer-program research results). Piezoceramic samples were obtained from the synthesized phases and electrical parameters were measured. Were revealed that the samples, obtained from the charge, synthesized by chemical construction had values of  piezoelectric constants d31 and d33 much more than samples obtained by the method of solid state reaction.
Keywords: piezoelectric ceramics, anisotropy, ultrasonic issue systems.

Keywords: piezoelectric ceramics, anisotropy, ultrasonic issue systems

 Theoretical model of anomalous electron emission has built for an soft x-ray irradiation of  surface elektrets, explaining the different character of correlation between energy and emission intensity of ferroelectric  solid solution PbTiO3 - CaTiO3 and nonferroelectric  ceramics CaTiO3.  Shown that  due electret surface irradiation the  Schottky area is  depleted by nonequilibrium charge carriers.

Keywords: Emission, electret, ferroelectricity, Schottky area

A method was developed предрасчета accuracy of measurements of the angles of the astronomical refraction of the near horizon and formulas for him. Calculated average quadratic error of determination of the angles of the astronomical refraction azimuth way and manner «hour angle» at the field paragraph.

Keywords: Astronomical refraction, the Hour angle, Zenith distance, Mean square error

The expediency of in-home population health services development is shown, forms of such service are specified. Advantages of medical equipment for in-home application (MEfIHA) usage from positions of patients are proved. Results of the population questioning, concerning with MEfIHA usage, executed by authors are presented. Structure MEfIHA available in sale and actually used by population is compared. For the majority of MEfIHA kinds their functionality, ranges of costs, features of application by patients are characterized. Variants of maintenance service for MEfIHA are investigated. The conclusion, that volumes of population MEfIHA usage are insufficient, are substantiated.

Keywords: the Medical equipment, in-home application, Availability of medical service, Quality of medical service, Technological level, Questioning

It is shown that to describe the phenomena and processes in a transition interfacial layer having a certain thickness, it is useful to distinguish the boundary layer of the surface and boundary diffusion layer, which lies entirely in the less condensed phase related. In accordance with this energy and power characteristics of the transition layer should be attributed to the boundary surface of the interphase transition layer. The basic equation of electro capillary boundary of the surface layer, establishing the dependence of the surface tension of this layer on the chemical composition of the second phase, and bordering the jump of electric potential between them.

Keywords: Interphase layer, Entropy, Concentration, Adsorption, Surface tension boundary layer, the surface energy, electrochemical electrode

We describe the hardware and software package designed to get the dependencies of instantaneous values ​​of the electric field E of the magnetic field H, and, depending on the module surface impedance and phase shift of the electric and magnetic fields on the amplitude of the alternating magnetic field. The digital synchronous detection method applied in this article to analyze the spectral response of the substances. This article gives the results for ferromagnetic materials, paramagnetic materials and dielectrics.

Keywords: surface impedance, ferromagnetisms, alternating magnetic field, alternating electric field, digital synchronous detection.

Sustainable management of agricultural consumer cooperatives (ACC) is possible based on the analysis of management  efficiency indicators. The developed models of performance indicators can be used in designing systems of information-analytical monitoring and control ACC.

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The article “Modeling adaptation strategies of social intellect of the Russian students” applies adapting and decoding models of defining, forming and measuring social intellect in peer groups of testees: pupils, students and teachers. Considering essential views on the nature of social intellect makes it possible to formulate the system of its characteristics of essence which is revealed as generic characteristics of social intellect. This approach might serve as a methodological prerequisite for further examining the essence of social intellect, its properties and functions.

Keywords: social intellect, social system, adaptation strategies, metrical text, social subject.

The methodology of the numerical experiment includes procedures for the development of functional requirements and the choice of a basic package of applied programs, organization and logic of the program; select the controllable factors and the design of experiments, testing the stability of the system and quality evaluation of dynamic processes, analyzing the reliability of simulation results. Results of numerical experiment are represented in this article.

Keywords: Soil cultivating aggregate, dynamics, mathematical models, simulation, numerical experiment.

Theoretical analysis of constructive and technological restrictions in the avalanche photodiode structure for photon-counting mode is made in this work. It is shown that critical parameters are load resistance and a time constant of a photodiode internal capacity recharge. For decreasing this time constant one needs size restriction of separate section of the photodiode and association of several such sections on a crystal together with registration schemes.

Keywords: Avalanche photodiode, Mode of the account of photons, Constructive-technological restrictions, Model of avalanche breakdown

  This paper studies the approaches to categorizing real estate development risks, presents the detailed classification of project financing risks by the chronology of their occurrence in the economic life of the project, describes the effects of risks on realization of project initiatives, and presents the main strategies to minimize them.

Keywords: real estate development, project finance, risk classification, risk management, project financing risks, project initiative, project life cycle

It was investigated the influence several additives and process parameters on the properties of piezoelectric ceramics based on PZT phase systems. It was shown that the use of the substitution of Pb2+ ions on the Bi3+, and Ti4+ ions, and Zr4+ to Fe3+ and Mn4+, as well as the method of "chemical assembly «allows to obtain increase the Curie temperature of ceramic samples of 50 - 170°C. The theoretical aspects of this area of research have been discussed in this article.

Keywords: ferroelectric phase, Curie temperature, ceramics, precursors, perovskite, a solid-state method, a method of «chemical assemblage

The analytical method determination parameters of the three-parametrical Waybill distribution for final volume population on the basis received parameters on a sample is stated in this work The algorithm of calculation on which computing experiment is made is presented. On the basis of these calculations the conclusion that it is necessary to determine by this analytical method parameters of the three-parametrical law of Waybill for set of final volume on the basis of the received parameters on a sample is drawn.

Keywords: population of final volume, sample, dispersion, an average quadratic deviation, distribution parameters, durability became

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When teaching students the basics of automatic control in the food, chemical and petrochemical industries have difficulty with the lack of opportunities for experiments on real objects. This article discusses the possibility of using software modeling complex ChemCAD to study the process of rectification to simulate real object to its mathematical model, to conduct research of static and dynamic regimes, to study the characteristics of various systems of regulation processes.
Keywords: rectification, ChemCAD, simulation, simulator, automation.

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