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  • Own compensation of noise of voltage reference in continuous compensatory stabilizers

      This paper presents a method of constructing microwave selective amplifiers, which allows control Q and voltage gain at the frequency of quasi-resonance. The presented architecture selective amplifiers for SiGe process technology have low power consumption.

    Keywords: RC-filter, good quality, controlled selective amplifier, gain, frequency quasi-resonance

  • Issues of reliability electric locomotives series "UZBEKISTAN"

    The results of operation of electric locomotives «O'ZBEKISTON». Describes the general characteristics of the railways in Uzbekistan, the basic characteristics of electric series «O'ZBEKISTON». It also presents calculations of generalized reliability indicators and the main directions of development of repair systems.

    Keywords: Railways of Uzbekistan, electric locomotives series «UZBEKISTAN», reliability

  • Methods of estimating the adequacy of simulation results

    This paper describes application of different criteria for estimating parameters of traffic simulation. For comparison following methods were used: statistical methods for comparison of a flow and speed in control points of a network - analysis of variance (ANOVA), Theil's U-statistics; relationships between flow, density and speed; relationships between trip time and stop time with using two-fluid models of traffic flow. For this aim we also used concept of meta-model. In order to implement this method we need on the first step to create separately relationship between traffic flow parameters for observation and simulation data and then to estimate combined model. The paper included results of calculation  

    Keywords: validation, traffic, simulation, flow, speed

  • Nested metagraphs as models of complex objects

    "The concept of the nested metagraph as the model of a complex object with different levels of generalization is introduced. It is shown that the nested metagraphs reflect the general system concept for description of complex objects with synergistic effect. This approach enables moving from the set-theoretic description of complex objects to their algebraic-theoretic description, thus increasing the model adequacy to real-life objects. The application of the nested metagraphs, in particular to business-intelligence and semantic search is considered. "

    Keywords: nested metagraphs, complex object, hyperedge as the essence, business analysis, a semantic network

  • Symmetry of anions in molten solts and raman spectra

    The values  the frequencies of the stretching vibrations of anions  SCN-,  NO2-, NO3-, CℓO4- in molten salts of alkali metals and their point group symmetry. There is a correlation with an increase in the frequency of symmetry  

    Keywords: Raman Spectra; anions; molten solts; group symmetry.

  • Computation re-routing period to dynamic traffic rerouting

    In the implementation of dynamic re-routing of traffic it is important to notice that the threshold depends on the network layout and type of the roads. Full paper includes appropriate relationships, figures and analysis of simulation results to define the re-routing period of dynamic traffic rerouti  

    Keywords: re-routing, cycle, dynamic traffic assignment, level of services

  • Research the relationship between technological possibility forest machines with the parameters of forest environment

      To estimate the effectiveness of forest machines developed technological possibility coefficient. Coefficients reflect the ability to provide a given performance of transport vehicles in the logging, the decline in the quality of the skid road surface. Method allows determining the amount of logging residues, necessary for the skid road construction. At calculating the available volume accounted for logging residues. Resources of logging residues are calculated depending on the type of timber and the length of skid road. The method allows selecting the optimum system of machines to work in these natural production conditions or schedule performance loss due to reduced carrying capacity of skid road.

    Keywords: Cross country, technological passableness, forest machines, bearing capacity of soils, skid road, wood types, logging residues

  • Regularity and reliability is in the estimation of quality of public passenger transport

     Quality of services of public passenger transport depends on many indexes. Reliability and regularity is important indexes of quality of public passenger transport. The example calculation of reliability is considered. Conclusions on reliability and regularity of routes are done  

    Keywords: quality, public passenger transport, regularity, reliability

  • Analysis of the basic characteristics and operation of landfills for the disposal of solid waste consumption

    The main characteristics of the different types of landfills for disposal of solid waste consumption: buried landfills poluzaglublenny landfills and surface polygon. For each landfills for disposal of solid waste consumption the features of operation  

    Keywords: Solid waste consumption, buried landfills, operation, poluzaglublenny landfills, surface polygons.

  • Improved methods of selection of the site for the construction of solid waste landfills consumption

    Methodical principles for selection of sites for the construction of solid waste landfills consumption suggested by other authors, based on which proposed a new method of selection of the site for the construction of a solid waste landfill consumption, examines its main stages and highlights the main advantages  

    Keywords: Solid waste consumption, operation, methods of site selection for the disposal of solid waste consumption.

  • The methodological aspects of the management of sales economic entities

      The paper presents the developed methodological aspects of management of sales of company performance in the context of the proposed type of classification of consumer goods «Innovative product», «New product», «standard product», «Mass product» in the conditions of the competitive environment on the basis of regulation of the relationship between the number of (physical volume) of the goods sold and value added (trade imposing on them) for subsequent determination required to ensure the effectiveness of the sales volumes. 

    Keywords: Types of classification of consumer goods, «Innovative product», «New product», «standard product», the methodological approach to the management of sales, the Mechanism of management of sales

  • Modified gravity method in placement the distribution of port terminals rail transport technological systems

    The features of the port transport and technological systems from the point of choosing the location of the distribution terminal, as the damper areas on the directions of export cargo. The authors propose a modification values of the coefficient of proportionality fractional power function the gravitational model and introduced the term "measure transport gravity" to evaluate options for placement of distribution terminals in the transport network.

    Keywords: Port rail transport technology system, cargo traffic, distribution terminal, graph theory, a modified gravity model, a measure of the transport of gravitation factor saturation network connections

  • Thermoactivation current spectroscopy of electrically active centres in epitaxial monocrystalline films of (TmBi)3(FeGa)5O12:Ca2+ ferrite-garnet

    The spectra of thermally stimulated conduction currents (TSCC) in (TmBi)3(FeGa)5O12:Ca2+ ferrite-garnet films have been investigated with the purpose to reveal electrically active centres. The samples were fabricated by liquid phase epitaxy (LPE) from melt solution on the Gd3Ga5O12substrates with the crystallographic orientation (111) with the use of Bi-containing flux (without Pb). Increasing the concentration of Ca2+ions in the films were realised by increasing the concentration of CaO in the melt solution. The obtained films contained Ca2+ ions from 0,03 f.u to 0,1 f.u. With the help of standard thermoactivation current spectroscopy the spectra of the initial samples and samples subjected to ultraviolet radiation and negative corona discharge were obtained. The characteristic parameters of electrically active defects were calculated.

    Keywords: thermally induced electrical current, ferrite garnet films, electrically active centres, deep-level capture, charge compensation, Ca- doping, ТСТП-spectra, temperature position

  • Socio-psychological mechanisms of formation of corporate culture of students in higher educational establishments

      This article discusses some of the social and psychological mechanisms of formation of corporate culture, developing in the process of interpersonal interaction of teachers and students of the University. The need to examine corporate culture of higher education gives the opportunity to all participants in the educational process to identify themselves with the institution of higher education to successfully adapt to the social norms and values of the University. It shapes standards of behavior and responsibility for their implementation, as well as having a great influence both on the individual and the University as an organization and society at large. Corporate culture provides more efficient activity of the University, and its main purpose is to participate in shaping the future of skilled professionals.

    Keywords: corporate culture, interpersonal communication, adaptation, extroversion, introversion, neuroticism

  • The properties of the products of gravel crushing recycled concrete as inert aggregate concrete mixtures

    Study the properties of rubble, produced by crushing recycled concrete. Secondary crushing of concrete products in the mass contains 20% of the grains gravel fraction 20-40 mm and 40-50% of the fraction 5-20 mm. The resulting rubble is the brand for divisibility 300-600, and its abrasion is within the A2-A4. Both indices increase with increasing grain size. To assess the grain shape of rubble offered index φs, which is the ratio of grain surface rubble to the surface of the cube of equal volume.

    Keywords: concrete, crushing, gravel, crushability, wearability