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  • UV photodetector based on nanorods and zinc oxide films

    With the use of pulsed laser deposition and carbothermal synthesis а photosensitive structure on the basis of the Schottky barrier Au/ZnO(nanorods)/ZnO(film)/ZnO(nanorods)/Au was obtained. The parameters of the carbothermal method of synthesis of nanorods ZnO were optimized. Under directly applied bias of 7V current sensitivity of luminous flux for this photodetector is observed in the UV and visible regions of the spectrum, and is 0.14 A/W - for 325 nm and 0.18 A/W - to 405 nm, which means that this structure has the ability of potential applications in various fields for the control of UV radiation (for example, for the monitoring of solar UV radiation, control of UV radiation in air and disinfecting water devices).

    Keywords: ZnO nanorods, Schottky barrier, photodetector, photosensitivity

  • Catalyst-free thermal synthesis of ZNO nanocrystals from zinc vapor by low temperature

    ZnO nanorod arrays have been synthesized on silicon wafers by chemical vapor deposition (CVD) technique with different  temperature modes, without metal catalyst.  With this method   vertically aligned ZnO nanostructures  were grown at the quite low temperatures.  Modification of the method allowed to place silicon substrates in areas with different  ratios of concentrations of the molecules in the vapor phase. Photoluminescence spectroscopy and electron microscopy studies have shown that morphologies and optical properties of nanorods depends on different ratios of concentrations of the molecules in the vapor phase.

    Keywords: ZnO nanorods,chemical vapor deposition (CVD), photoluminescence

  • Pulsed laser deposition of ZnO nanostructures

    The arrays of ZnO nanorods were obtained on the sapphire substrates by means of pulsed laser deposition under the high pressure of argon. The conditions of synthesis were optimized, and their influence on the morphology of  ZnO nanostructures were revealed. It is shown that the concentration of oxygen vacancies in ZnO nanorods can be changed by regulation of the synthesis temperature from 850 to 915 °. This process can be controlled by the ratio of intensities of the photoluminescence emission in the visible and ultraviolet regions. So, it allows to create nanostructures for UV photodetectors or chemosensors depending on the temperature choice.

    Keywords: ZnO nanorods, laser deposition, PLD, photoluminescence

  • The influence of cavitation processes on the distribution of the acoustic waves inside the waterpipe

    Calculation of acoustical pressure in the main water pipeline filled with water is in-process carried out, at affecting of cavitation processes. Calculation is lead by means of interactive system MatLab

    Keywords: Acoustics, pressure, extending, wave, the main water pipeline, cavitation

  • Pezogenerator in a device structural for monitoring water supply networks

    The device for energy takeoff in water systems on a bottom piezoceramic a device entrained in a water stream is in-process observed. The water stream, contacting with piezoceramic a device, calls it oscillations and potential emersion on plates.

    Keywords: piezoceramic a device, piezooscillator, monitoring, structure, a water stream, water supply systems

  • Information system for monitoring process parameters waterpipe

    The intelligence system of monitoring of technological parameters of the water pipeline is in-process observed, allowing to lead an estimate of reliability of water supply systems and optimisation of plots of repair

    Keywords: Intelligence system, monitoring, structure, technological parameters, the water pipeline, reliability, repair

  • The development of effective fiber-reinforced concrete structures for underground construction

    The most promising technologies of concrete and reinforced concrete for the underground construction and transport. The studies with the inclusion of concrete and steel and polypropylene fibers. The factors affecting the strength and modulus of deformation materials. The conclusion about the need to study the effectiveness of the concrete with a combined reinforcement.

    Keywords: Concrete and underground construction, fiber, strength, modulus of deformation

  • Processing of spatial information about the boundaries of sanitary zones of waste landfills on the basis of fuzzy logic

    The method of application of fuzzy logic to solve the problem of spatial planning using geographic and information systems is described. The spatial arrangement of objects on the map is used as input factors of the solution, to find which a model of the spatial descriptions of objects using a bitmap representation is constructed. The way of formalizing fuzzy judgments about positional relationship of objects and the system of inference making based on the fuzzy logic methods is developed. An example of using the method described in this article to determine the sanitary protection zone of industrial waste landfill in the territory of the Republic of Bashkortostan is given

    Keywords: fuzzy logic, geographic information systems, the problem of territorial planning, disposal of industrial waste, protection zones

  • Prospects of introduction of hexagonal distributive electrical grids

    At the present time in most countries of the world are being actively developed and introduced intelligent technologies necessary for creation of reliable and effective intellectual energy systems. Intellectualization of distributive electrical grids will move energy system to a new level of automation. Evenly distributed electrical grid of hexagonal type was offered. The principle of creation a grids was described, a typical scheme of universal electrical load unit was proposed. The key advantages of the hexagonal network was reviewed. The estimation of the reduction of the level of losses during electricity transportation was made. The increase of the level of reliability, the factors affecting the probability of faultless work were determined. Evenly distributed grids of hexagonal type will build energy system based on Smart Grid and solve existing problems: lower quality of electricity, the shortcomings of the power reserves, high density of electrical loads and high energy losses. Project implementation should be carried out in stages: from pilot project to implementation in big cities.
    Work is executed with financial support of Ministry of education and science of the Russian Federation (state contract №14.516.11.0104 from 14.10.2013).  

    Keywords: electricity, hexagonal grids, smart grids, distribution grids 10-20 kV, reliability of power supply

  • Computer simulation of visual grouping mechanisms selective to spatial modulations of contrast

    This paper outlines the implementation of computer model of second-order visual mechanisms that are specific to spatial contrast modulations, and represents the results of testing the model. Computer simulation is based on "Filter-Rectify-Filter" model with some important additions. The inhibitory parts of receptive field of simulated mechanism are non-selective to orientation and spatial frequency of texture elements. Texture modulated by orientation or spatial frequency does not reduce flank inhibition and does not activate the mechanism. Unmodulated texture  also does not cause activation of the filter because the flanking inhibition will be equal to or exceed the excitation. However, increasing the contrast in the center and reduction it on the flanks leads to the activation of the second order mechanism.

    Keywords: Second order visual mechanisms, image filtering, texture, spatial modulation, computer simulation

  • About research of the onboard integrated control system by aircraft with correction of coordinates

    The work is devoted to the study of algorithms of control subsystem as part of the integrated onboard control system of the aircraft and used in the final part of the trajectory. Algorithms of control subsystems are synthesized on the basis of the theory of optimized delta-transformations of the second order using the principle of the inverted pendulum on a cart. The studies based on the simulation using the developed software model, allowed to estimate as the impact dispersion, and the contribution to it of various subsystems.

    Keywords: terminal control, aircraft, on-board integrated control system, optimized delta transformation of the second order, autonomous short range radionavigation system, simulation, software model

  • Comparative analysis of the syntactic parsers organization

    The article describes peculiarities of modern syntax parser systems and problems originating in text analysis. As a result of comparative analysis the authors propose a unified approach to processing of unstructured texts in Russian and English which combines morphology and syntax processing. The developed syntax analysis system, using verbs’ valency dictionary, samples of minimal structural schemes of sentences and samples of conjunctions, allows choosing predicative structures of sentences in the text, realizing initial semantic analysis due to semantic content of predicate’s actants and building trees of syntactical subordination of sentences. The derived trees hold elements of tree of constitutives and tree of dependences. The proposed samples and rules organization allows resolving some of the problems of modern parsers. And the use of verbs’ valency dictionary allows reducing the number of sentences syntax analysis variants.

    Keywords: automatic text processing; syntax parser; morphological analysis; structural text elements

  • Method of managing master data in autonomous systems

    Described a variety of available master data integration methods and techniques. Proposed a method for data enrichment in connected autonomous systems based on applying custom written master data access functions available via global meta catalog.

    Keywords: data integration, master data, business processes, enterprise service bus, enterprise application integration

  • A description of the potential function for the more accurate equation of lines motion

    In the present work proposes a specified description of potential functions when the free spreading  in the two-dimensional turbulent flow of planning. In contrast to previous decisions, new parameter satisfies the continuity of flow when the flow flowing  from rectangular tubes on the discharging  track  

    Keywords: final line of motion, lines of equal potential, horizontal rectangular tube, diverting from the mainstream flow

  • Transformational training and holistichesky approach in the information and educational environment of technical University

    Questions of modernization of higher education on the basis of development of structure of the hi-tech information and educational environment of technical college are considered. Transition to new structure of the educational IT infrastructure aimed at formation of open educational system, meeting modern requirements to engineering preparation is carried out. 

    Keywords: transformativny training, holistichesky approach, the information and educational space, the integrated system