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  • Economic efficiency of phased development of dry ports

    After accession of Russia into the WTO the tasks related to the development of infrastructure have been sharpen. With the growing volume of cargo traffic and the lack of opportunity for the extensive development of the port infrastructure, the alternative of building the dry port can be only feasible, although explicitly the most expensive. Due to this reason the method of gradual development of the dry port which provides significant economic efficiency was addressed in the article.

    Keywords: dry ports, net present value, the efficiency of the investments

  • Ecological entrepreneurship: essence, features, development ways

      The paper attempts to analyze existing in the economic literature to define the essence of environmental and ekologo-orientation business. Outlines the main ways of developing a new direction for our country's business.

    Keywords: environmental business, the market for environmental goods and services

      The review of the researches which are carried out in Petrozavodsk the state university in the field of improvement of a wood cargo transportation.

    Keywords: motor transport, road trains, modeling, optimization

      The importance of domestic competitive machinery market entry is shown in the paper. It is shown that the domestic competitive machinery, which provides complex harvesting of round and fuel wood, market entry is the important direction in solving the problem of wood consumers market development in the capacity of biological fuel. 

    Keywords: wood fuel, preparation, consumers, market

  • Clustering of regional economic activity in the conditions of economy globalization

      Modern problems of reproduction processes at regional level taking into account globalization requirements are considered in article. The main attention is given to the analysis of preconditions of cluster development of regional economy which in the conditions of globalization become the major reproduction factor.

    Keywords: regional economics, total regional economics, global economics, basic fund, regional cluster

      The model of optimization of a cargo transportation of production of the timber industry enterprise which describes process of transportation of wood from wood-procuring enterprises to wood-processing enterprises is offered in this article. Search of an optimum multiple contour of a transport network is considered in model.

    Keywords: mathematical model, optimization of a cargo transportation, automobile forest transport, multigrocery transport problem

  • Modification of Prony algorithm for vector-scalar array

    The algorithm, which allows to apply the Prony method to estimate of the sources parameters using vector-scalar receiving array is discussed. Noise immunity of the proposed algorithm is very high, so as the measured components of the acoustic field does not contain a noise.

    Keywords: Prony algorithm, vector-scalar array, dynamic sea noise, the covariance, the flow of power

  • 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

  • Information about authors (№4 p.2, 2012)

    Information about authors of issue №4 p.2 (2012)

    Keywords: authors

  • Information about authors (№4 p.1, 2012)

    Information about authors of issue №4 p.1 (2012)

    Keywords: authors

  • Resource calls in the field of regional bio-energetics and a way of their overcoming

    The questions of regional bioenergetics development on the example of The Republic of Karelia are considered. The resource challenges in the field of harvesting and industrial use of energy wood and peat are described. The solutions to get over these challenges are identified.

    Keywords: Challenges, Regional Bioenergetics, Peat, Energy Wood.

  • Study of the dynamics of washing machines in the spin cycle

    The questions devoted to the study of influence of mass textile articles vibroaktivnosti drum type washing machine with a horizontal axis of rotation at a centrifugal spinning. Feature of research is accounting change in mass production during the spin cycle when calculating the amplitude of transverse vibrations, including during acceleration and passing the resonance zone. The object of investigation used a modern model of household washing machine. Initial operating parameters were varied, based on the actual values ​​for the machines of this type. In a paper on the study the graphs, the analysis of the data obtained. The results can be used to study the dynamics of washing machines to improve their vibration isolation systems.
    Keywords: Washing machines, dynamics, vibration amplitude, the influence of mass products.

    Keywords:

  • Arrangements of computational intelligence in solving the automatization problem of prediction of electricity

    In this paper we consider the problem of effective forecasting of electricity consumption for multiple objects in automatic mode. We propose an approach to automation of forecasting process, based on CRISP-DM. There were considered methods of computational intelligence for the data preprocessing - filling the gaps and identification of the emission, methods of construction and adjustment of forecasting models. As the computational basis are used connective models, based on neural networks and on constructive neural networks. There was shown the system architecture that implements the mechanisms of computational intelligence, and was presented the results of the tests.

    Keywords: consumption of electricity, forecasting automation, computational intelligence, identification of the emission, connective models.

  • Kinematic synthesis of rectilinearly - enveloped mechanism of jaw crusher

    The kinematic synthesis of the unknown parameters of the rectilinearly - enveloped mechanism of jaw crusher presented, which is linked dependencies with known parameters of the crushing chamber, unloading and loading slot. The dependence obtained on the basis of the method of interpolation approximation of functions. The description jaw crusher with complex movement of an agency on a basis rectilinearly - bent around the mechanism is submitted, her dignity and the area of application

    Keywords: rectilinearly - enveloped mechanism, kinematic synthesis, and jaw crusher.

  • About Forming of Loading Mechanisms for Mechatronic Systems with Closed-Loop Kinematic Contour

        The structural model of functional mechanisms with stressed closed-loop contour which is used in the mechatronic systems is offered in this article. The problems of loading mechanisms forming are analyzed here. The work of self-regulating loading device is considered on the example of cutting mechanisms. The results of experimental investigations are represented.

    Keywords: closed-loop contour, energy saving, reducing machines, loading mechanisms.