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  • Reducing the financial risks of a construction company by means of the diversification economic activity

    Each managing subject tries to lower level of risk factors for himself for the purpose of increase of efficiency of activity. One of options of minimization of losses and decrease in action of risk factors is the diversification consisting of distribution of means between various activities so that losses just seeing activity can be compensated by profit on other kind of activity of the managing subject.
    In article the diversification of economic activity connected with use by construction company of new production and marketing capabilities for the purpose of increase of efficiency of economic activity is considered.
    The decision on diversification as a way of decrease in risk of activity of the enterprise is accepted on the basis of correlation coefficient which shows degree of expressiveness of a tendency to changes of size of one variable at changes another. At value of coefficient of the correlation, equal to zero, lack of communication between variables is observed. If numerical value of coefficient of correlation is equal to unit, variables are connected by direct functional link, that is there are unidirectional changes of variables. At value of coefficient of the correlation, equal the minus to unit, between variables is observed the return functional communication testifying to a raznonapravlennost of change of variables. At value of coefficient of the correlation, equal or close a minus to unit, it is expedient to make the decision on carrying out diversification.
    The reasonable model of optimization of a choice of the customer is offered mathematically.  

    Keywords: risk, enterprise, diversification, benefit, parameters, correlation, model

  • Analysis of criteria of increase of economic efficiency enterprise activity when carrying out diversification

    The article highlights the conditions for effective diversification. The factors of the internal environment, affecting the efficiency of diversification. 
    The methods of analysis of the market, allowing you to tailor a strategy of diversification to the changing conditions of competition in the market. 
    Shows the need for structuring diversification, given the group on current issues, as well as a comprehensive solution to these problems, we have an in-depth analysis and diagnosis with the subsequent implementation on the basis of this analysis in the operation of the enterprise. 
    There are four stages of diversification of copyright: in the first step to solve the problem of selecting priority areas for development within the economic entity, the second stage is the process of structuring a problem specific to the business entity; the third stage should be determined by the direction of the use of innovative resources as the main form for priority directions ongoing diversification; fourth phase to establish mechanisms for the implementation of diversification at the business entity.  

    Keywords: diversification, enterprise, efficiency, factors, criteria, stages

  • The research of energy reserves capacity running on regularized round timber production technological line for wood construction

    There is an important task to improve timber complex. It is a search of efficient using wood. The research results of energy reserves capacity running on a regularized round timber production technological line for wood construction are given in the article. The research suggests that 40 – 45 percent wood resources using on regularized round timber production technological lines are waste. This capacity can use for manufacturing different energy products: firewood, chip fuel, fuel pellets, fuel briquette. The research made on the plant (limited liability company “Biogrant”) in Karelian Republic.

    Keywords: Woodworking, cylindering, technological line, wood costraction, energy reserves, fuelwood, firewood, chip fuel, fuel pellets, briquette

  • Energy potential of straw as biofuel

    In article the potential of production of biofuel on a basis the pozhnivnykh of the remains of cereal cultures is estimated. The technique of definition of amount of biofuel from the lump of agricultural production is considered. Actual data on stocks the main vegetable waste are provided. Potential of amount of conditional fuel is calculated. Data on physical and chemical properties of hydrocarbonic raw materials are provided. Problems which arise in the course of biofuel use are considered. Conclusions about an energy potential the pozhnivnykh of the remains of cereal cultures are provided.

    Keywords: biomass, alternative technology, pellet, energy supply, haulm

  • Analysis of current economic mechanism of stimulation of rational water use in Rostov region

    An analysis of the current economic mechanism of stimulation of rational water use of the Rostov region, which consists of the following elements: water, expressed in the tariff policy of the region, program-target planning in the field of water use, environmental permitting and licensing of water management activities, preferential tax and investment policy, modernization and development of communal infrastructure, ecological monitoring are the main economic instruments used in each item, highlighted the advantages and disadvantages of the current economic mechanism.

    Keywords: economic mechanism of stimulation, water use, rational water use, incentives, penalties

  • Teoretical basis for the metodology of optimal choice of instrumention at a complete enviromental wagons labs

    Metodological apporoaches are considered the choise of instrumentation at a complete enviromental wagons labs. Metodology for the optimal choice of instrumets is proposed to achiv the fundamental unifying analytical chemistry and experience eco-analytical laboratories complements existing theoretical approaches

    Keywords: information technology, enviromental wagon labs, systematic approach, ecoanalitical tasks, enviromental control, the metodologi of optimal choise of instrumentation

  • Study of corrosion and electrochemical properties of anode coatings oxide for production dilute sodium hypochlorite

    Consider the choice of coating anodes for electrolysis of sodium hypochlorite nizkokontsentrovannogo 3% solution of sodium salt of food and water of the Black Sea. Defined corrosion resistance of anodes with different laying oxides of ruthenium and iridium and their characteristics: yield chlorine-current voltage on the cell growth dynamics of the concentration of active chlorine in the solution.

    Keywords: oxide coatings, iridium, ruthenium, low concentration of sodium hypochlorite, the corrosion resistance of anodes according to the output current of chlorine, the electrolysis of a 3% solution of sodium edible salt and sea water.

  • Direct vector control of induction motor drives using model predictive control

    This paper presents the application of the model predictive control (MPC) technique for direct vector control  of induction motor drive. Three MPC controllers have been employed; one for adjusting the motor speed, the second for rotor flux control and the last one is specialized for controlling the motor currents. A simple models of induction motor is employed in the MPC structure so as to minimize the computational load. a cassced  The effectiveness of the proposed scheme has been successfully verified through simulations.  The performance of the system including the MPC controller is compared with the corresponding one using the traditional PI controller. The results proved that the induction motor with the MPC controller has superior transient response, and good robustness in face of uncertainties including load disturbance. Moreover, accurate tracking performance has been achieved. 

    Keywords: Ac drives, Induction Motor, Model Predictive Control, vector control, field oriented control.

  • Calculation and assessment of an indicator of reliability at design of thermal networks

    Reliability of existing structure of thermal networks and search of an optimum zone of connection of new consumers taking into account the received indicator is investigated.

    Keywords: Reliability, thermal networks, diagnostics, heat supply system, reliability indicator

  • Possibilities of regulation of processes of heatmoist processing in mass-exchanged devices at influence of electric field

    the problems of moisture (cooling) in the mass-transfer apparatus at different parameters of fluid spray and varying the magnitude of the influence of the electric field in the zone of the spray.

    Keywords: heat and mass transfer, mist dispersion, electroaerosol, electrostatic dissipation.

  • The necessity of usage of logistics management at the network retail enterprises

    This article discusses the problems of  retail network in Russia and the main directions of development of the domestic networks in connection with the expansion of foreign networks and Russia's WTO accession. In the harsh conditions of competition will survive only those commercial enterprises that will   practically use logistic as business philosophy and methodology, and  the main provisions of logistics management in  their business practice  

    Keywords: Retail network, development of retail network, Logistizatcija retail network problems network retail, logistics strategy, logistics management

  • Strategic planning in the region : the process or the result ?

    Shows the need for strategic planning in the region to deploy strategic horizons in coordinated time measures and medium-term operational planning and strategic management to give indicative , focusing on the interest of the authorities of independent businesses and create conditions for the implementation of strategic plans.

    Keywords: region, operational planning , strategic planning, performance of the economy .

  • Selection of promising topology construction for a frequency converter of electrically driven gas pumping unit

    The article considers the design of modern electrically driven gas-pumping unit (EGPA). The advantages of a smooth adjustment of speed and performance EGPA. Provides an analysis of options for building the power part of the high-voltage frequency converters, used in the composition of the EGPA at compressor stations of main pipelines. Refer to the element base of high-voltage frequency converters. The characteristics of each of variants. The method of work of the frequency converters. Compare the characteristics of frequency converters of various manufacturers. The basic approaches to manufacturing. Defined the most optimal scheme of the power part of  frequency converters.

    Keywords: frequency converter, topology, design, optimization, structural scheme

  • Calculation of the capacitance of the capacitor on the DC link active harmonic filter

    Block diagram of the active harmonic filter is considered.  State table inverter power switches active harmonic filter is considered. Calculated the capacitance on the DC link active harmonic filters. The calculation takes into account the power converter losses in the active harmonic filter.

    Keywords: active harmonic filter, distortion power, energy storage capacitor

  • Some guidelines of patenting of stamp-welded wedge valves’ frames for main piping of the plants of nuclear power, thermal power, oil and gas industries

    Patent search has been accomplished and guidelines of patenting of stamp-welded wedge valves’ frames for shut-off valves for the plants of > nuclear power, thermal power, oil and gas industries and for main piping are  given. 

    Keywords: nuclear power plants, valve industry, pipeline valve, shut-off valve, wedge valve, main piping

  • Using hardware in the loop simulation in design of data-measuring and controlling systems

    Today’s trend of electronics complicating makes developers to create more complex devices in a shorter time. Developers have to contrive different ways of designing automatization to prevent production worsening. However, automatization cannot improve the situation when an innovative device is developing because such developing involves a lot of testing and researches. In this article authors propose to use hardware in the loop simulation methods to optimize designing process. Hardware in the loop simulation is division the device in functional blocks, some of them are produced as models and other are produced as hardware. Usage of this method decrease cost of modernization hardware blocks and allow using a number of data processing algorithms at the same time.
    The article contains a using of hardware in the loop actuality description, main steps of designing enunciation and description of method exemplified by designing of data-measuring and controlling system for automatic orientation of tropospheric communications station.

    Keywords: hardware in the loop simulation; data-measuring and controlling system; design of electronic devices; development of electronic devices;

  • Interactive training programs in educational process on household refrigerating appliances

    In article the material about use of interactive training programs in educational process of the students training difficult household appliances is prepared. 
    Within transition of the higher educational school to provisions of Bologna Process by a leading method of pedagogical work there is a competence-based approach to formation of steady knowledge and practical skills at students [1]. Indispensable condition thus is compliance of quality of training and the general education standard. As especially important requirement continuous control of assimilation of educational information and ability of its application serves in practical activities. The most well-tried remedy of total control of assimilation of educational information is carrying out daily testing, including remote. Use of test interactive programs becomes more actual at integration of groups and increase of an academic load on the teacher [2].  

    Keywords: criterion of efficiency, intensity of thermal streams, refrigeration machine, inflow and selection of heat, vaporizer

  • System of oscillations indemnification of a high-rise construction in a seismoactive zone

    Systems of passive damping of oscillations of high-rise constructions are considered. Their merits and demerits are revealed.  The roller  system of  oscillations indemnification  of the high-rise constructions subject to seismic influence is offered.  The principle of its work is described.  Advantages are estimated.

    Keywords: high-rise construction, damping of oscillations, passive systems, roller system of indemnification, vibroisolation

  • Russian language in Finland: Problems and Prospects

    We show that for specialists needed professional Russian-Finnish (Finnish-Russian) dictionaries that the promotion of Russian language teaching in Finland and Finnish as a foreign language is highly relevant, and its implementation should be multi-layered, designed for children, pupils, students Comrade, professionals of different specialties. 

    Keywords: education, promotion of the Russian language, Russian-Finnish dictionaries.

  • Stability of linear delay-differential equation of milling process

    A stability problem of milling process is under consideration. A novel analytical tool is presented to assess the optimal cutting parameters which provide a chatter free machining. Chatter instability is broadly studied in the literature. However, the problem of simultaneous optimization of radial and axial depths of cut is kept out of scope. To describe the optimization method a single-degree-of-freedom model of milling process is investigated as well as corresponding equation of motion and function of cutting force. A unified delay-differential equation is proposed. A theorem of asymptotic stability is suggested. Suggested optimization technique allows to create a diagram of radial and axial depth-of-cut dependence.  As shown, there exists an extremum of function of axial and radial depth-of-cut dependence.  

    Keywords: chatter, stability, delay-differential equation, oscilations, self-excited vibrations, optimization

  • Comparative evaluation macrodamages wheat, with variation schemes seed branch of cleaning machine.

    This article describes the way of the grain material in grain cleaning unit at various purification schemes. Researches on wheat injury when variii various schemes. Spotted seed purification scheme with the lowest percentage of damaged seeds and basic characteristics agaregata functioning under the scheme.

    Keywords: grain material, fractionation, seed cleaning, grain cleaning machine

  • Studying the properties of UHMP in the manufacture based on them working organs of tillers.

    This article discusses the use of different tillage bodies made ​​of a material based on UHMP. Researches on these items and abrasion increase in wear resistance when in contact with the soil. A comparative analysis on the use of parts made ​​of UHMWPE and metal parts

    Keywords: Plastic UHMP, tillage, working bodies, wear resistance, abrasion

  • Economic aspects of diversification of thermal energy taking into account ecological requirements

    Reviews the basic contents of diversification of thermal power plants, which will contribute to improve environmental and economic performance in the industry.

    Keywords: diversification, enterprises of power industry, enrichment of coal, ash dumps, pollution, species blade, air pollution, ash, slag ash, secondary resources.

  • Method for railway car numbers block recognition based on committee neuroimmune classification

    This paper presents a new neuroimmune-based method for block recognition of railway rolling stock inventory numbers. The advantage of such approach is  classification without using of negative samples. Developed technique combines segmentation and classification that allows to achieve higher noise robustness, segmentation possibility of fuzzy combined digits which have different fonts and typeface, and invariance of existing numbers to scale changes. Proposed method allows to constantly increase the training set for the improvement in classification accuracy by new committee classifiers statistics due to the data reduction property achieved by using the immune clustering mechanism. Research results were implemented in the software system of automatic recognition of cars numbers (ARNV), which is operated on the JSC Russian Railways.

    Keywords: Method for letters block recognition, the committee neuroimmune classification model, identification, automatic recognition car number, duplicate number

  • Display of the orthogonal projection of a four-dimensional hypersurface


    Problem research of display the orthogonal projection of four dimensional hypersurface defined by the equation in an implicit form one and two hyperplane. To communicate and bypass hypersurface Discriminants assumes that the hypersurface of the two-parameter family of two-dimensional display received surfaces in five-dimensional space. The analysis of kriminant four dimensional hypersurface orthogonal projection onto the coordinate hyperplane in two coordinate axes. The intersection of three dimensional hypersurfaces axiom (kriminant) defines a two-dimensional surface that is the envelope of the two-parameter family of two-dimensional surfaces. Are the necessary and sufficient conditions of existence of this envelope.
    The results obtained are used to study the Discriminants four-dimensional hypersurface, the display of two-parameter family of spheres in a five-dimensional space.  

    Keywords: a family of surfaces, hypersurface, envelope, the display features, а discriminant.