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  • Development of a new resource-saving technology for treatment of sloping lands

    A new resource-saving technology for treatment of sloping lands providing for deep ripping to reduce erosion processes on irrigated and dry-farming lands as described in the article. The experimental results on determination of geometric characteristics for loosing scopes of chisel plows are given.

    Keywords: sloping lands, deep ripping, soil overcompactness, moisture accumulation, intrasoil moisture accumulation, loosing scope, intrasoil walls

  • A family of surfaces defined formulas transform coordinates and its envelope

      In many applications of profiling cutting tool, define the envelope surface collection. Along with the classic approach to the definition of the envelope of the recently used and new. So, if your family schedule projected two-dimensional surfaces in space R4, then get some three dimensional hypersurface Σ. Kriminanta this is the envelope of family of surfaces. The authors study the surface Σ when setting its parametric equations and equation in implicit form held in the works.  Found some new properties of such surfaces. Due to the fact that when profiling cutting tool set family of surfaces, coordinate transformation equations, an important task is the study received thus hypersurface. On the basis of article studies obtained in a general manner the necessary payment according to calculate kriminanty and diskriminanty hypersurface.  They show examples of how to define envelopes two families of spheres. These are family formulas transform coordinates defining the translational and helical movement. The results are illustrated by computer polygonal models.  

    Keywords: a family of surfaces, hypersurface, profiling, feature display, cutting tool

  • Winter concreting technology with flexible heating elements

    The article describes one of the possible ways to improve the durability of roofing bitumen-emulsion mastics used in the repair and new construction due to the introduction of surfactant inhibitors.

    Keywords: SAW inhibitors, roofing, mastics, durability, modifiers

  • On the design features a unique, long-span and high-rise buildings and structures

    Design unique buildings and structures is a complex task requiring high qualifications, training and experience specific performers. The article describes in detail the contents of the various etapovproektirovaniya, the basic requirements and features, starting with the technical specifications of the project and finishing expertise. Outlines the features of pre-training, the issues that must be resolved before the start of work. We consider the load that must be considered and especially the calculations. The requirements on the development of specific technical specifications (CTS) on the object and scientific and technical support of the project (NTS) Particular attention is given of experimental studies of physical models of buildings and unique structures. The following material can serve as a basis for program and algorithm for the design of long-span and high-rise buildings and unique structures.

    Keywords: Unique building, maintenance building, pre-project, load a single spatial system, structural analysis, specific technical specifications (CTS), scientific and technical support, monitoring, model, examination

  • Raman spectra on three phase transitions of perchlorate of natrium

    The analysis of temperature dependence of frequencies of lines  is conducted active in the spectrums of combination dispersion of  perchlorate of natrium. The theory analysis of spectrums is conducted.

    Keywords: Perchlorat of natrium, anion, spectrums of combination dispersion, phase change

  • The compelled axisymmetric fluctuations of a bimorph thin circular plate stepwise variable thickness and stiffness

      Is considered non-stationary axisymmetric problem for fine round bimorph plate under the action of the top end surface of the normal stresses, being an arbitrary function of radial coordi-nates and time. On the basis of the theory of Tymoshenko by the method of finite integral transformations built a a new solution for the electroelasticity system stepwise  variable thickness and stiffness. The obtained relations allow to investigate the stress-strain state and the potential difference between external electrodes bimorph elements.  

    Keywords: task reverse piezoelectric effect, thin bimorph plate, axially symmetric dynamic load

  • Flexible piezocomposites with mixed connectivity phases in the system

      Laboratory technology was developed to fabricate flexible piezocomposites with ferroelectric phase - polymers having signal reception factorv • gv 5000 • 10-15 m2 / N. The values of the given coefficient were achieved by switching from a probabilistic (spontaneous) percolation to a correlated one in the process of forming material. This made the production of 0-1–3 piezocomposites, in which a part of piezophase has 0 connectivity, and the other part – 1 connectivity possible. To improve the efficiency of piezocomposite polarization before their manufacturing the surface of piezophase particles, which were obtained by the partial destruction of the porous frameworks, was treated with coupling agent, which did not only improve the polymer adhesion to piezophase, but also allowed the removal of water from the particle surface. The latter effect reduced the value of interfacial conductivity, i.e. prevented the voltage drop of the polarizing field. Matching of polymer conductivity and piezoceramic particles by determining the optimal polarization temperature was carried out as well.  

    Keywords: piezocomposites, percolation, connectivity, electrophysical properties

  • Dynamics of affective political attitudes of students RSSU (first half 2013)

    At the end of 2012 – the middle of 2013 pilot questioning among RGSU students was carried out. In total more than 330 students of the first and second courses were interrogated. The work purpose – measurement of dynamics of an emotional component of group installations in relation to a political order. The emotional component of group political installation was measured on technology of semantic differential. It was offered to estimate to respondents on 20 bimodal scales four types political about. Two ideal – ideally positive and ideally negative orders. And two real – local and central. In the linear approximation calculated levels of emotional perception of the political order in the vicinity of the averaged image of the real image of the ideal order to constructs used in the space of features. Perception of an order at the end of 2012 in Region: -0,21892, in Russia: -0,24154 . To the middle of 2013 level of perception decreased: in Region: -0,59429, in Russia: -0,43879 . For the considered period level of a relative deprivation also was analysed: in 2012 level is equal 0,523 and in 2013 made 0,555. Thus, to the middle of 2013 there is a small increase in level of a deprivation that correlates with deterioration of perception of a political order among youth.

    Keywords: political order, semantic differential, factor analysis, the emotional component, questioning, relative deprivation

  • Problems of transition to the closed systems of a heat supply

    Discusses the problems of transition from open to closed systems of connection of consumers to the heat network. On the basis of fundamental analysis of the advantages and disadvantages of the various connection schemes of buildings comparison of energy efficiency and reliability of open and closed systems of a heat supply. Basic conditions guaranteeing the possibility of the device of the closed heating systems in buildings, присоединненных to thermal networks on the open circuit. Shows the need for reconstruction of water supply systems and power supply of the building when it transferred from open to closed scheme accession to the heat network.

    Keywords: heat supply, district heating, closed heat supply scheme, open circuit heat supply, individual heating unit, reliability of heat supply, energy efficiency.

  • Classification expert system for devices and processes in the railroad facilities

    The paper considers system designed to help with the organization of qualification testing of expert groups, as well as in the provision of software tools for expert and automated clustering and classification of devices and equipment of railway automation. The scope of this complex are intelligent systems, devices, and other equipment in work with whom systematic classification of measurements needed. Presented software application designed on Borland Delphi - high level programming language.

    Keywords: expert system, clustering, classification, acceptance testing, diagnostics of technical condition

  • Nonfinancial financing of construction sector entities: Theory

    Credit availability to construction sector entities determines for thin-capitalized construction firms the possibility of survival during the crisis and of efficient growth during the economic recovery. The main lenders for construction sector entities are commercial creditors (suppliers) and banks. Although their credit policies are similar, debt to commercial creditors dominate in the balance sheets of borrowers, because of customary business practices in construction industry and regulatory distinctions.

    Keywords: information asymmetry, agency theory, trade credit

  • The application of the theory of disperse systems for the description of the behavior of the toxic components of the flue and exhaust gases from stationary and mobile sources of urbanized territories

    Considers the most important sources of material pollution of urban territories. A comprehensive approach to studying properties of pollutants, based on the theory of disperse systems. Built block diagram of systematization of parameters that determine the behavior of contaminants from the position of theory of disperse systems. The dependence between the behavior of pollutant aerosol and parameters of its stability.

    Keywords: Contaminant dispersion system, the parameters of pollutant properties, stability of pollutant aerosol

  • Monitoring and evaluation of the strength of concrete at the plants of precast and ready-mix concrete

    Provides a method of representation of the scheme of control and evaluation of concrete strength at the factory. The method does not require detailed text-th maintenance, differs with visibility and convenient for workers of the construction laboratories.

    Keywords: Сontrol of the selling of concrete strength, the party of commodity concrete mixture, the party of the precast concrete and reinforced concrete, the required concrete strength

  • Capital structure determinants of construction companies

    This paper presents key capital structure determinants of construction companies and their impact on fund raising and financing mix formation in accordance with the conditions of construction activity. It was found that profitability and tangibility have a positive effect on leverage, risk - the negative and the effect of company size, assets growth rate and taxes is ambiguous.

    Keywords: capital structure determinants, profitability, risk, taxes, tangibility, construction companies

  • Technologies of definition of the resistance to stress of employees at the enterprises of services sector focused on clients

      The purpose of this work is identification of optimum methods of an as-sessment of a resistance to stress in work of the modern organizations of a services sector. This article considers the major factors influencing effective work of the personnel in a services sector under the influence of various stressful situations.  Categories of the workers who are most subject to psychological instability on workers are defined.   

    Keywords: resistance to stress, testing methods, service economy