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  • The basic principles of the producing and erection technology of the chimney liners from polymer composite materials by the method of vertical winding with the growing

    The paper is dedicated to development of modified technology of producing and erection of large fiber-reinforced plastic (FRP) shells. This work gowing with the support of Russian Ministry of science and education. Technology is baced on the method of the vertical wet winding with the growing. The main prospective area of using of this technology, is the reconstruction of the tall chimneys with the erection of inner liner from the FRP shells.  

    Keywords: fiber reiforced plastics, glass reinforced plastics, chimneys, metod of the vertical wet winding with the growing

  • Methodical bases of measuring sustainable development of the market of cultivated mushrooms

    Measuring the sustainability of the market development of cultivated mushrooms will keep its status through isostatic effects of the complex determinants of development, creating optimal conditions for the movement of his main indicators nevelirovanie their dynamic vibration

    Keywords: Market cultivated mushrooms, sustainable development, trend, trend models, the coefficients of variability.

  • The growth of trading networks as a factor of strengthening the power asymmetry in the system of goods circulation in the consumer market

    In the article the author examines factors and reasons causing the problem of strengthening the power asymmetry as a result of market expansion of trading networks, which is identified by the author as a system empirical trend in the market determining structurization of its organizational field.
    Evaluating the high potential of development of format trade in the Russian market, the author concludes that the rapid expansion of trading networks creates enormous pressure on the manufacturing business: increasing potential difference is transforming into asymmetry of market power of network retail trade and production companies that stimulates the process of their extremely non-equilibrium strategic positioning in the system of goods supply in the domestic market of the country.
    The author comes to the conclusion that the potential of building mutually beneficial strategic partnership relations between manufacturers and trading networks is today relatively restricted by reason of dominant position of networks in the system of goods circulation in the consumer market. Formation of economically effective and strategically balanced partnership alliance of networks and suppliers occurs predominantly only with medium-sized and large manufacturing FMCG companies which have sufficient level of technological capacity and resources which allow them to produce quality high-tech production adequate positioning of which automatically creates in the market powerful production brand.   

    Keywords: Supply chain, asymmetry, market power, trading network, producer, expansion

  • Topological defects are located on a spherical surface.

    The simulation of two-dimensional spherical crystals consisting of a large number of particles is carried out. These shells were analyzed based on their geometric structure and energy distribution. Various types of defects formed in a state of equilibrium  is considered. Being shown the ambiguity of the existing method of their interpretation. A new way of describing such defects in the close-packed two-dimensional crystals with different topology is suggested.  

    Keywords: topological defects, two-dimensional materials, spherical crystals, topological charge

  • Formation of radiating elements AESA ERS satellites elliptical polarization of the field

    The techniques generate a directivity diagram a slot antenna array with variable polarization. The results of calculation the characteristics of radiation for an array dimension 4x4 elements.

    Keywords: AESA, microstrip antennas, spacecraft, remote sensing of the earth.

  • GPR determination of electrical and physical properties of motor road and railway structural layers

    The paper studies the possibility of quantitative processing of the GPR data for determining the dielectric permittivity and conductivity of a medium (soil samples). Experimental studies are made using radargrams of soil samples with specified values of moisture and conductivity. New methods of quantitative processing of radargrams are proposed in this work to determine the dielectric permittivity and conductivity of soils. The methods were successfully tested on various sections of Russian railways net.

    Keywords: layered road profiling, GPR, soil moisture, soil layers profiling, soil conductivity

  • Researching a profile of potential of an electrostatic field during a blizzard in the Alp zone as potential renewable micro power source

    Tendencies of technological improvement of electronic chips led to reduction of their sizes, weight, development of functionality and decrease in power consumption. It allows us to discuss questions of developing renewable micro power sources which can provide power supply of autonomous microelectronic and micro circuitry systems for charge indication, paying attention to snow transfer, etc. 
    The purpose of the paper is researching a profile of electrostatic field potential in the mountain district which was estimated as a possible use as a renewable micro power source.
    It is found out that on windward sides of snow relieves the potential of electrostatic field exceeds three times to a similar  indicator for lee sides and is 80 V.  The potential is 3,5kV on polymeric surfaces (Nylon, teflon).   

    Keywords: snow storming electricity, electrization, potential of electrostatic field, charge, the salting, the loaded particles of snow, innovation electronics, micro circuitry, renewable micro power sources.

  • Comparative analysis of porous piezoceramics modelling by effective moduli and finite element methods with experimental data

    The results of computational experiments to determine the characteristics of the porous piezoelectric ceramics based on the methodology, including the effective modules method, simulations of representative volumes on a simple random method and the method of Witten-Sander, finite element method to solve static piezoelectric problems for heterogeneous composite media and the accounting of inhomogeneous polarization near the pores are presented. A comparison of the results of computer simulation with the known experimental data for the porous material PZT-4 and its analogs is realized. It is concluded that the accounting of inhomogeneous polarization in the vicinity of porous provide the better agreement between numerical results and large number of known experimental data. Thus, for most effective constants the smallest errors are obtained for a representative volume of the porous piezoelectric material, constructed by Witten-Sander method.

    Keywords: piezocomposite, porous piezoelectric ceramics, inhomogeneous polarization, mathematical modelling, models of representative volumes, finite element method, effective moduli

  • The influence of electric field of junction with Schottky barrier on the impurity atoms relocation in semiconductor.

    The simulation of the process of the electrically active impurities relocation in the electric field of Schottky diode space charge region has been made. The analysis of the simulation results shows the possibility of controlled alloying impurities relocation on the depth about tens of nanometers caused by electrically active atoms diffusion in the electric field of Schottky diode space charge region.

    Keywords: diffusion, space charge region, Schottky diode

  • To unstable coloration centres in rear earth gallium garnets

    The coloration centres (CC) in crystals of rear earth gallium garnets (REGG): Gd3Ga5O12 (GGG), Gd3Sc1,6Ga3,4O12 (GSGG) и Nd3Ga5O12 (NGG) obtained by Chohraljskiy method, were investigated by methods of optical spectroscopy and spectral analysis in the wavelength range of 0,2-0,87 microns. In the case of keeping the samples under dark conditions, unstable CC were formed in the crystals of GGG and GSGG. The absorption maxima are at λmax1 = 0,243 m and λmax2 = 0,275 m at concentration of N ~ 1018 cm-3. It is suggested that the observed enlightenment is caused by the recharging of growth defects and occurring the energy levels in the band gap of garnets. It appears that these CC correspond to centres of O- holes, originated from gallium vacancies V3-Ga 3+ in tetrahedral and octahedral nots which form near clusters of [V3-Ga 3+ - V2+O2- ]

    Keywords: color centers, rare earth gallium garnets, kristylly, Czochralski method, the crystal lattice

  • Classifiers for the construction of complex objects in multidimensional spaces

    Is devoted to the actual problem of constructing classifiers objects given by a point in a multidimensional space of feature values. The principle of linear normal classification of objects in multi-dimensional space of attributes can be used to build a classifier in the case of many complex structures, in general, are inseparable one hyperplane. In such cases, proposed to use a set of hierarchically related normal separating hyperplanes, which is called the normal hierarchical classifier.

    Keywords: recognition, classification, feature space, the geometric method

  • Analysis of the Causes That Affect the Change of the Operational Reliability of Buildings and Constructions

    In the process of exploitation of the building there is a reduction of its operational reliability in accordance with the inevitable influence of several groups of factors. The two main groups, influencing the technical condition of the buildings was considered

    Keywords: operational reliability; technical condition; engineering diagnostics

  • On the coefficient of prismatic strength of high-strength concrete

    This article provides an account tsentrenno and eccentrically compressed reinforced concrete columns of high-strength concrete on the deformed pattern in SP 63.13330.2012. Compares the results of the calculation of the bearing capacity of the columns with the set experimental data. Proposed adjustments in the form of the coefficients in the formulas for the curvature tsentrenno compressed columns j and eccentrically compressed yb.

    Keywords: high-strength concrete, physical experiment, prism strength, lateral reinforcement, concrete counters, deformation correction factor

  • Experiment planning on thermal power plant fly ash collection in elektrocyclone

    The article deals with the design of experiments for dispersed particles capturing in elektrocyclone. The autors gives planning matrix calculation, the regression equation based on the aerosol velocity and the initial concentration of the aerosol and plot of function.

    Keywords: gas cleaning; cyclone; elektrocyclon; fly ash

  • Principles of risk management system of investment and construction projects urban territoties development

    The article is devoted to the formation of scientific and methodological basis of socio -ecological and socio-economic risks that arise in urban areas in the process of realization investment and construction projects for the development of the urban environment. The authors identified the contradictions economic substantiation of development projects of territorial development and socio- environmental factors, the adverse effects of their realization, on the basis of which concluded the need for modernization of the basic principles of risk management for sustainable development of urban territories . The article proposes a set of principles that are required for the formation of an effective system of risk management of investment and construction projects of development of urban territories, which includes five interrelated principles : the principle of the matter of feasibility activity, the principle of optimization of protection, the principle of an integrated estimation of the danger, the principle of ecosystem sustainability, the principle of "the polluter pays". The proposed principles will gain the efficiency of the analysis and selection of projects for realization only able to provide the highest level of security and stability of the socio- economic sector of the city.  

    Keywords: principle, the system of governance, risk, investment and construction projects, urban territories, sustainable development, social and environmental security