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  • The paper considers the comparison of power consumption of Two’s Complement System and Residue Number System for digital signal processing applications. The comparison of these two implementations allows to conclude that, for these applications, the RNS uses less power than the TCS counterpart. The aim of the present paper is to highlight the reasons of this power consumption reduction.

    Keywords: residue number system, digital signal processing

  • Model of micromechanical mirrors mobile elements balance with internal suspension

    The model of micromechanical mirrors mobile elements balance is developed. The received results of modelling of a micromechanical mirror are considered. 

    Keywords: microsystm technology, element base, model, modeling, mirror

  • Influence of the number of old asphalt and technology of its submission on the properties of the prepared asphalt mixes

    The influence of the amount of the addition асфальтогранулята on the properties of asphalt mixes and asphalt. Also considered is the impact of technology of filing асфальтогранулята on physical-mechanical properties of asphalt mixes.

    Keywords: old asphalt, asphalt, astringent, physico-mechanical properties, homogeneity.

  • Analysis of the processes of foreign studies forestry road trains

    the analysis of foreign researches, which consist of processes of functioning timber lorries is given. Decrease transport expenses with minimization of empty run of timber lorries and formations of rational structure of this park has been proved.

    Keywords: timber lorries, functioning

  • Study of the catalytic ability of the nanosized catalysts based on CeO2 during catalytic reaction

    The nano-catalyst ceria (CeO2), activated by Pt nanoparticles, is known for being prospective and efficient material widely used in catalysis, fuel elements, and sensors. One of the most up-to-date methods of catalysts' reasearch is X-ray absorption spectroscopy (XAS) that is sensitive to the chemical state of catalyst's active centers [1,2]. Using XAS in the fluorescense detection mode at CeL1 line with high precision we studied electronic structure of Pt-activated nanoparticles of ceria at various redox conditions. In order to detect partial X-ray fluorescence yield the emission line CeLγ3 was used, which allowed us to increase spectral resolution. We researched local atomic and electronic structure of the materials under study. Oxygen vacansies were found to appear on the nanoparticles surface of ceria at 5% CO He atmosphere. Theoretical modeling of the obtained spectra at CeL1-edge demonstrated good agreement with experiment.

    Keywords: X-ray absorption spectroscopy, HERFD, XAS, Ce-based catalysts, oxygen vacansies

  • Method of calculating the equivalent mechanical properties of membranes of complex topology for the microsystems technology elements

    "This article is devoted to the development of the method for modeling elements of microsystems technology(MST) of membrane type. In this paper perforated membranes are considered and the impact of perforation on the mechanical properties of the membranes is examined. In numerical simulations of the elements it is proposed to use the equivalent mechanical parameters of perforated membranes obtained at the initial stage of the simulation. This will allow to obtain find the optimal parameters of perforation, reduce the time and resource modeling of MST elements. To test the technique numerical experiments were conducted for the two square membranes with sides 1.5 and 3 mm fixed on the contour of the same thickness. We studied the influence of the size of the perforation on the equivalent Young's modulus of the perforated membrane. "

    Keywords: microsystems technology, numerical modeling, perforated membrane

  • Justification of the choice of schemes for the complex mechanization of works in construction control panel unit №2, Berezovsk, Krasnoyarsk region

    This paper considers the technological scheme of production of works at construction of control panel unit №2, Berezovsk Krasnoyarsk region. The selection of the necessary construction equipment.

    Keywords: Justification of the choice of schemes for the complex mechanization of works in construction control panel unit №2, Berezovsk, Krasnoyarsk region

  • Determination of the roughness and Chezy’s coefficients for calculating wastewater networks in conditions to reduce the cost of wastewate

    In conditions of reduction of the costs of wastewater actual value of the minimum speed and current case does not provide the required conditions of self-purification of networks. The studies conducted on the silt areas of current collectors of various diameters made of various materials with the purpose of determining the resistance of precipitation in the trays pipes.
    Describes the methodology and instruments of research. The data obtained allowed with sufficient certainty have established roughness coefficient bottom sediments of sewers.   

    Keywords: drainage network, the rate of self-purification, sewer, roughness, bottom sediments.

  • Calculation of the design consisting of blocks with a hexagonal plate and a circular cylindrical cover with a fringing

    Article is devoted to strength calculations of compound designs. The deformed condition of a design from the blocks consisting of the basis in the form of a hexagonal plate, circular cylindrical cover rigidly connected with the basis is considered intense.

    Keywords: plate, shell, the strength, the composite structure.

  • Local Atomic Structure and Computer Modeling of the Copper Ion in Amyloid Beta Peptide: XAS Study

    Alzheimer's disease is an incurable illness. It affects about half a million people in Russia, and due to the general trend towards aging of the population the number of Alzheimer's disease cases will steadily increase. Insoluble deposits of amyloid beta in the brain tissue (amyloid plaques) are the major morphological characteristic of Alzheimer's disease. It has been found that the increased concentration of copper in amyloid plaques results in copper ions bound to the protein. It is the presence of copper in the binding site triggers of the formation of amyloid plaques. Therefore, the study of the binding site in amyloid beta is of great scientific interest. The local atomic structure of the Cu(I) copper ion binding site in the amyloid beta peptide has been studied by means of XANES spectroscopy. Several model structures obtained by molecular mechanics and density functional theory (ADF code) have been tested. Theoretical analysis of X-ray absorption spectra based on the finite difference method implemented in FDMNES code was performed. An appropriate model structure of the Cu(I) copper ion binding site in amyloid beta peptide has been found.

    Keywords: amyloid beta, binding site, Alzheimer's disease, the method of finite differences, Cu(I)

  • Measurement of electric resistance lived control cables with bridges DC

    Damage control cables in electrical phenomenon is quite common. To prevent cable replacement great lengths in serviceable there is a way to repair it, previously requiring a definition of the place of damage. In this case, you must apply a number of methods to determine the place of circuit lived or their place of breakage. In this case, knowing the resistivity lived control cable can be determined by bridges DC. Methodology and methods of measurement of resistance lived control cables are discussed further in the article.

    Keywords: Bridge DC, shops resistance, the sensitivity of the bridge

  • A simulation of small scale helicopter using position-trajectory regulator

    In this paper, the synthesis of a trajectory regulator for a mini-helicopter are described. We propose a method to hardware-in-the-loop simulation using simulator AerosimRC. The simulation results are showed. The tasks for the application of the method are pointed.

    Keywords: position-trajectory regulator, helicopter, mathematical modeling, simulation, algorithms.

  • Localization of damage concrete structural elements with prestressed reinforcement

    The possibilities of the vibration method changes the curve oscillation localization damage concrete structural elements with prestressed reinforcement. This article discusses a method for curve oscillation example concrete slab in terms of spatial, complex stress state under the action of vertical force Q.

    Keywords: Vibration diagnostics, fault detection, diagnosis, design, construction span, reinforced concrete, concrete, reinforcement, prestressing.

  • Automatic device for analysis the nonlinear parameters of HTSC ceramics YBa2Cu3O7-x in variable magnetic fields.

    Considered part of the software and hardware designed and manufactured the device for the automatic analysis of nonlinear parameters of high-temperature superconducting ceramics YBa2Cu3O7-x in variable magnetic fields. Shows the calibration and specifications. The new is a synchronous (the error in determining the phase of no more than 0.5%) of digital signal samples of the nonlinear response of the sample and the samples generated by an external magnetic field (the error is less than 1%), with the number of data samples per channel to 90 ∙ 106 12-bit samples and sampling 600 ∙ 103 samples per second. The reference range of variable magnetic fields 1 - 50 Oe, a frequency range of 1 - 50 kHz in steps of 1 Hz and the accuracy of 0.0291 Hz. The device has an interface to the computer via two USB-interface and original software to work with it. With the use of the device, a series of experiments designed to produce some non-linear parameters of cylindrical sample made of high-Tc ceramic YBa2Cu3O7-x. The analysis of the results and their comparison with the presented in the literature  

    Keywords: Nonlinear medium, high-temperature superconducting ceramics, synchronous samples, harmonics, ARM-9 CPU, a differential sensor.

  • Processing and filtering signals. State of the art

    An overview of research related to the tasks of processing and filtering of signals. Signal is considered as a random process defined by probabilistic characteristics. This article addresses the issues of the history of the development of methods of signal filtering. Recent scientific publications in which the results and the main directions of research in the field of signal processing and filtering are analyzed. Presented material extends the current state of knowledge about the problem.

    Keywords: signal, signal filtering, signal processing, stochastic process