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  • Modeling and analysis of the demand for new transport network improving objects

    When introducing a new facility to improve the transport network, there are appear many risks. The priority is the financial riskbecause core funding for these projects comes from private organizations. Careful calculation of demand is an integral part of the development project. For the effective analysis of the transport network since the project requires a conscientious approach to the latest technology.

    Keywords: Transport network: improving objects, Transport network, Demand for transport routes, Traffic flow, Mathematical modeling of demand

  • Tools to support the modeling process, which is based on L-systems

    It is proposed software-technological complex for modeling, which uses L-systems (Lindenmayer Systems) as the tools of modeling and visualization. The main purpose is to construct models of processes and structures that have a fractal nature. The complex supports different types of L-systems: deterministic context-free L-systems, stochastic L-systems, parametric L-systems, context sensitive L-systems. The developed tools have been used to model and analyze the socio-economic processes.

    Keywords: L-systems, modeling, Fractal, Self-similar structures, Production rules, Grammar, Graphic interpretation

  • Search of optimum location of stations of an overload solid municipal waste mathematical methods

    In article the technique of optimization of placement of waste reloading stations, allowing to define both location, and number of stations that allows to reduce both operational and capital expenditure for the organization and functioning of system of the address with a waste is offered.

    Keywords: technological process of transportation, a solid municipal waste, critical distance

  • Control methods of microstructure construction process of piezoelectric ceramics based on doped titanate lead and its electrophysical properties

    The article describes methods allows to control the degree of anisotropy piezoelectric ceramics based on doped phase PbTiO3. As a model of the object has been selected phase of Pb0,76Ca0,24Ti0,94(Cd0,5W0,5)0,06O3. The model phase was obtained by the following methods: by solid state reaction method and the chemical construction. For comparison phases obtained by these methods were used modern analytical research methods (DTA, TGA, XRF, XRD, power and tunneling microscopy, computer-program research results). Piezoceramic samples were obtained from the synthesized phases and electrical parameters were measured. Were revealed that the samples, obtained from the charge, synthesized by chemical construction had values of  piezoelectric constants d31 and d33 much more than samples obtained by the method of solid state reaction.
    Keywords: piezoelectric ceramics, anisotropy, ultrasonic issue systems.

    Keywords: piezoelectric ceramics, anisotropy, ultrasonic issue systems

  • Anomalous electron emission in the soft X-ray irradiation of the surface of electrets

     Theoretical model of anomalous electron emission has built for an soft x-ray irradiation of  surface elektrets, explaining the different character of correlation between energy and emission intensity of ferroelectric  solid solution PbTiO3 - CaTiO3 and nonferroelectric  ceramics CaTiO3.  Shown that  due electret surface irradiation the  Schottky area is  depleted by nonequilibrium charge carriers.

    Keywords: Emission, electret, ferroelectricity, Schottky area

  • Investigation of the surface quality of weld metal cylindrical part machined in hot condition

    Investigated the quality of the surface layer of weld metal cylindrical part in the combined processes of under the flux layer welding and cutting, as well as follow grinding of weld metal in the hot and cold. Showing photos of the weld surface and the machined part and its structure

    Keywords: grinding, hot weld metal, structure of the metal, micro hardness.

      The system organization assumes formation of the scientific construction complex providing builder’s competitiveness. Sated network model sare perspective.

    Keywords: System organization, information, model, investments, market, management

  • Mathematical representation of the characteristics of the interphase boundary surface of the transition layer

    It is shown that to describe the phenomena and processes in a transition interfacial layer having a certain thickness, it is useful to distinguish the boundary layer of the surface and boundary diffusion layer, which lies entirely in the less condensed phase related. In accordance with this energy and power characteristics of the transition layer should be attributed to the boundary surface of the interphase transition layer. The basic equation of electro capillary boundary of the surface layer, establishing the dependence of the surface tension of this layer on the chemical composition of the second phase, and bordering the jump of electric potential between them.

    Keywords: Interphase layer, Entropy, Concentration, Adsorption, Surface tension boundary layer, the surface energy, electrochemical electrode

  • Dynamic cancelation of additive error of precision analog-to-digital converter

    Analog-to-digital converter, with modulation, amplification and demodulation of the input signal is carried out. To compensate the additional error of voltage conversion, concerned with temperature instability, used dynamic cancellation technique, based on the correlation between offset voltage and modulator temperature fluctuation. ADC with response time 0.85 s performs the threshold of sensitivity 1 nV; 8,5 s - 0,31 nV, 85 s - 0.13 nV, 850 s - 0.1 nV, respectively, in the full-scale range 400 mV. Estimation of offset voltage temperature drift is 40 pV / ºC, time drift - 100 pV / h.

    Keywords: analog-to-digital converter, ADC, error cancellation.

  • The use of hybrid self-organizing neural networks and fast discrete wavelet transform for the construction of systems of classification of signals

    In this paper we consider the problem of constructing a classification algorithm signals using self-organizing hybrid neural networks and fast wavelet transform, which is a special type of linear transformation of the signals and these signals are displayed physical data about the processes and physical properties of natural environments and objects implemented using fast neural networks.

    Keywords: signal, classification, neural network, self-organization, the wavelet.

  • Modeling adaptation strategies of social intellect of the Russian students

    The article “Modeling adaptation strategies of social intellect of the Russian students” applies adapting and decoding models of defining, forming and measuring social intellect in peer groups of testees: pupils, students and teachers. Considering essential views on the nature of social intellect makes it possible to formulate the system of its characteristics of essence which is revealed as generic characteristics of social intellect. This approach might serve as a methodological prerequisite for further examining the essence of social intellect, its properties and functions.

    Keywords: social intellect, social system, adaptation strategies, metrical text, social subject.

  • The analysis of constructive and technological restrictions in design of the avalanche photo diodes, working in a photon-counting mode

    Theoretical analysis of constructive and technological restrictions in the avalanche photodiode structure for photon-counting mode is made in this work. It is shown that critical parameters are load resistance and a time constant of a photodiode internal capacity recharge. For decreasing this time constant one needs size restriction of separate section of the photodiode and association of several such sections on a crystal together with registration schemes.

    Keywords: Avalanche photodiode, Mode of the account of photons, Constructive-technological restrictions, Model of avalanche breakdown

  • Analytical determination Waybill distribution parameters for final volume population according to durability of steel selective data

    The analytical method determination parameters of the three-parametrical Waybill distribution for final volume population on the basis received parameters on a sample is stated in this work The algorithm of calculation on which computing experiment is made is presented. On the basis of these calculations the conclusion that it is necessary to determine by this analytical method parameters of the three-parametrical law of Waybill for set of final volume on the basis of the received parameters on a sample is drawn.

    Keywords: population of final volume, sample, dispersion, an average quadratic deviation, distribution parameters, durability became

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  • Intelligent semantically oriented approach to automation travel agency work

    At this paper we propose a new approach to processing knowledge through intelligent automation system travel agency. This approach is based on models of knowledge, interpreted using semantic knowledge. The principles of construction and operation of the architecture of the system to automatically obtain and process context information as an example of intellectual semantically-oriented system that provides travel services. Completed description of the ontology used by the tourist area. Demonstrated the use of context information from the knowledge base in the processing of queries to the system.

    Keywords: ontology, automation of a travel agency, intelligent, contextual data, behavioral design patterns