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
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
Features of sampling of the piezoceramic transducer for the arrangement of structural monitoring of water supply systems are in-process observed and calculations of basic performances of the sensing transducer (material PZT-5A) are led
Keywords: piezoceramic transducer, ultrasound, monitoring, structure, extending, water supply systems
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
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 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
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
The paper describes a method to build Jerah krietriev for solving decision making in the management of complex multivariable systems based on functional decomposition . The result of functional decomposition takes the form of an ontology -based posnroennoy deskriptinvyh logic to build a hierarchy of concepts. The advantage of this method is the ability to use it for semi-structured systems. The result of the ontological analysis of the functional structure of the system is the taxonomy, including a description of the processes , organizational structures, and indicators of quality of running processes . When referring to this ontology by using the proposed request is generated hierarchy of indicators , based on the processing of values is carried out and decisions .
Keywords: ontological analysis, systems analysis, ontology, descriptive logic
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
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
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
The results of research of raw materials of the logs production for timber construction are considered in the article. Length of logs (for 6 meters assortment), diameter of logs (model logs) and shape of butt (an average shape factor of butt) were studied. The model log is a volume of cylinder which is equal to a calculated volume of logs. The theoretical laws of the random variable for these values are found. The Research was conducted at LLC "Biogran" in Petrozavodsk, Republic of Karelia.
Keywords: Woodworking, cylindering, technological line, wood costraction, factors, length of a log, diameter of a log, butt
In the article authors examine specificities of internal components behavior changing in fiber-optical cable under influence of strong variable uniform electromagnetic field. There are some process variations proposed for describing of obtained results.
Keywords: fiber-optical cable, electrothermal degradation, kevlar, conductivity, open fiber-optical cable, partial discharges, water treeing
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
The article describes a tool for continuous improvement of qualifications of labor by measuring compliance with the existing standards of the employee's qualifications. There was done Investigation has been done of the influence of the system of certification of professional qualifications at the level of productivity and economic efficiency of an economic entity.
Keywords: certification of qualifications, workforce, competence, knowledge, certificate, professional standard