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  • Comparison of the results of a calculation of the astronomical refraction near the horizon in different ways

    Performed calculations of angles of the astronomical refraction in different ways and made a comparative analysis of the results of a calculation. Provides recommendations for the use of any means in different contexts.

    Keywords: Astronomical refraction, the Hour angle, Anti-aircraft distance, atmosphere, Pulkovo table.

      The simulating applications are considered when mobile bloodflow monitor designing. Doppler techniques simulating, circuitry simulating and insonation object modeling are presented. The results of simulation are approved during experiments, and results of modeling are applied when receiving and transmitting path of mobile bloodflow monitor testing and piezotransducer parameters experimental estimating.

    Keywords: Simulating, mobile bloodflow monitor, Doppler techniques simulating, circuitry simulating, insonation object model

  • Development of the new method for determination of 3D nano atomic and electronic structure of materials based on XAFS, XRD and Raman techniques

    Combined method which allows analyzing parameters of the nanoscale atomic and electronic structure of materials relying on three different methods (x-ray absorption spectroscopy (XAFS), x-ray diffraction (XRD) and Raman spectroscopy) was developed. The method was applied for the study of nickel oxide nanoparticles, which serve as an efficient catalyst for the artificial photosynthesis process. 

    Keywords: solar energy, artificial photosynthesis, NiO, Raman, x-ray diffraction, XAFS

  • Operando dynamics of the nanoscale atomic and electronic structure of materials for hydrogen storage

    We have carried out the analysis on the scientific and technological literature on methods of calculation and analysis of the x-ray diffraction, x-ray absorption and Raman spectra used to analyse the structure of the materials for hydrogen storage under realistic operating conditions. The simulations were carried out for the series of small palladium nanoclusters with embedded hydrogen. Multiscale computer modelling was used to simulate the dynamics of structure of the materials during charge/discharge phases.

    Keywords: hydrogen storage, XANES, x-ray diffraction, Raman scattering, fuel cell

      The importance of domestic competitive machinery market entry is shown in the paper. It is shown that the domestic competitive machinery, which provides complex harvesting of round and fuel wood, market entry is the important direction in solving the problem of wood consumers market development in the capacity of biological fuel. 

    Keywords: wood fuel, preparation, consumers, market

      The proposed approach to the study of social engineering systems to meet all their basic features. Blurred structure of social engineering system reflects the fuzzy cognitive model; Fuzzy connection effectively evaluated using weights Fishburne; "blur" element values system and its functioning is overcome by introducing linguistic variables and their term-set fuzzy classifiers.  

    Keywords: system analysis, poorly structured and poorly formalizable processes, sociotechnical systems, fuzzy cognitive modeling

  • The reasons of occurrence of interval values in mathematical models of robust research the stability of control systems

    Examines the historical stages in the development  of the theory of systems research management of the uncertainties, the reasons for they arise in the mathematical  model, this is reflected in an interval values in the transfer  function of the object of control. It is proposed algorithm for obtaining experimentally the interval of values.

    Keywords: interval values, robust stability, the transfer function, parametric uncertainty, a mathematical model of the management system

      When using the prediction in the control of the rotational motion is necessary to construct two smooth trajectories passing through the previously measured its nodal points. As a piecewise polynomial curve that provides the desired smoothness, consider interpolating cubic splines, which are between nodes represent a cubic parabola, continuously connecting the nodes with the smoothness of degree 2. In imposing additional boundary conditions, these splines minimize its total curvature.

    Keywords: Interpolation splines, management tasks, prediction algorithms, kinematic characteristics, Hermit splines

      The article describes the best ways spline interpolation trajectories of angular movement in the key points for solving motion control rd to the prediction of the external load. As benchmarks we examine the accuracy of the approximation of the drive and the complexity of calculation of coefficients of splines.

    Keywords: Trajectory, Lagrange splines, splines Ferguson, interpolation

    In this paper the mathematical model of automatic positional hydrodrive of actuators machines with hydraulic control circuit of high efficiency original design. The model is formed with a view of the developed structure of the hydraulic drive and control system comprises three subsystems: a mechanical, hydraulic and control. Using the software package Matlab 2012 investigated position loop is characteristic of the rotary mechanism for the technological equipment according to the criteria of speed and accuracy.

    Keywords: mathematical modeling, position hydrodrive, the control of unit, accuracy, high-speed performance

  • The deformability of concrete beams reinforced with GFRP and combined (hybrid) reinforcement

    • Abstract

    In this article considered the questions related to how the deformability is influenced in concrete beams, in which steel reinforcement replaced with fiberglass GFRP or a combination (hybrid). The latter is very important, as the current standards do not account the increased in strength of composite reinforcement, whereas its elasticity modulus is lower than the elasticity modulus of steel reinforcement.

    Keywords: concrete, reinforced concrete, strength, deformability, steel, fiberglass reinforcement GFRP, composite, the modulus of elasticity, deflection

  • Specification of a technique of definition of a charge of drop ablation in a working zone at barbotage electrolits

    In article questions of improvement of a technique and theoretical bases of electrocatching with reference to problems of fight against drop ablation in a working zone in the conditions of galvanic production are considered.

    Keywords: electrocatching, drop ablation, working zone, barbotage, charge, drop

  • By using torsion energopoglotiteley for seismic structures

    • Abstract

    Currently actively promote seismic associated with the use of special devices, so-called energopoglotiteley. Are very effective konstrutsii energopoglotiteley in which the working element undergoes torsional strain. These EPA have the maximum energy absorption with minimal weight.

    Keywords: Earthquake protection, energy absorption, the diagram of deformation, plastic deformation, plastic torsion

  • Two-channel precision converter voltage-to-pulse

      In this paper for the solution of the transformation "voltage-to-pulse" is proposed implemented in CMOS basis (technical process SGB25VD) structure based on high-frequency converter and comparator multiplexer with symmetrical hysteresis. Increasing the accuracy of the transformation achieved by the proposed method switching input voltages, excluding the through-analog switches. The results of computer simulation confirmed the effectiveness of the developed structure. Practical implementation of an analog-to-digital converter has shown that the proposed method of construction reduces the technological requirements for the components of the system-on-chip and increase its productivity.

    Keywords: system-on-chip, analog-to-digital converter, structure, multiplexer, switching, measurement error, comparator, integrator

  • Categories of psychotherapeutic discourse and their expression in the language (on the basis of the novel by I. Yalom The Schopenhauer Cure)

    The article describes such categories of psychotherapeutic discourse as its participants, aims, values, specific concepts. Special attention is given to the means of the categories’ expression in the language. The authors name so called teleonomic concepts of the psychotherapeutic discourse (life – death), discourse –specific concept relationship is also in focus. It is noted that psychotherapeutic discourse is of a metaphorical nature.

    Keywords: psychotherapeutic discourse, discourse participants, relationship, discourse metaphorical nature