Econtechmod
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Item Mathematical model of dust cleaning process in centrifugal-inertial dust collector(Національний університет "Львівська політехніка", 2013) Batluk, V.; Paranyak, N.; Makarchuk, V.The article is devoted to the problem of providing air cleaning from dust in various industries, using highly efficient apparatus, with the aim of bringing the volume of harmful emissions to the sanitary standards. The article presents new directions in creating of dust cleaning apparatus, based on the usage of centrifugal, inertial forces, by which the efficiency of dust collection could be significantly increased.Item Nonlinear regression model of the formation of the loan portfolios of the banks in Central and Eastern Europe(Національний університет "Львівська політехніка", 2013) Alieksieiev, I.; Belyayeva, О.; Yastrubskyy, М.The article examines the impact of significant factors and adaptation of the experience of CEE countries to the current conditions of the banking business development in Ukraine in order to strengthen the competitiveness of domestic banks in the conditions of European financial integration. In order to identify the main sources of risks a regression analysis of formation of the loan portfolio volumes of the banks in CEE has been made.Item Зміст до "Econtechmod" Volum 2, nomber 2(Національний університет "Львівська політехніка", 2013)Item Geoinformation technology for spatial inventory of greenhouse gas emissions: electricity and heat generation in Poland(Національний університет "Львівська політехніка", 2013) Topylko, P.; Lesiv, M.; Bun, R.; Nahorski, Z.; Horabik, J.One of the main features of energy production in Poland is high dependence on consumption of coal and lignite, which results in significant emissions of greenhouse gases (GHGs) to the atmosphere. This article presents the geoinformation technology and spatial analysis of GHG emissions from fossil fuel burned by power and combined power and heat plants. These plants are considered as emission sources of a point type. As input data, official regional statistics about consumption of fossil fuel for electricity and heat production are used. In addition, main characteristics of power and power/ heat plants are collected from official web-sites. Based on the developed model, numerical experiments have been carried out for the territory of Poland. The results of spatial modeling are presented in the form of thematic maps.Item Implementation of corporate social responsibility in the process of strategic management(Національний університет "Львівська політехніка", 2013) Korenyev, Е.In the article modern approaches to the definition of the place of corporate social responsibility in the system of strategic management of an enterprise are analyzed. The conclusion about the priority role of the integrated approach to formation of business strategy as a tool of realization of the interests of stakeholders is drawn.Item Influence of some speed parameters on the dynamics of nonlinear flexural vibrations of a drill column(Національний університет "Львівська політехніка", 2013) Pukach, P.; Kuzio, I.; Nytrebych, Z.We investigate the influence of the motion of fluid flushing the cutter of a well drilling column, and the angular rotational velocity upon dynamic characteristics of its flexural vibrations. We take into account the nonlinear elastic features of column material. As a base of the research we took the Galerkin method and the Van der Pol method. Combining those two methods made possible to obtain the relations describing the main parameters of the dynamical process in both nonresonance and resonance case.Item Mathematical model for motion of weighted parts in curled flow(Національний університет "Львівська політехніка", 2013) Batluk, V.; Basov, M.; Klymets, V.The article deals with the problem of providing high performance apparatuses for cleaning air from dust in various branches of industry in order to reduce hazardous emissions to the level conforming to sanitaryhygienic norms. The article describes new trends in the development of dust catching apparatuses based on the use of centrifugal-inertial forces, permitting to improve significantly the effectiveness of dust catching.Item The role of innovative creative collectives in anticipatory management of enterprises(Національний університет "Львівська політехніка", 2013) Shpak, N.; Goryachka, O.; Adamiv, M.In the article the actuality of anticipatory management as an objectively necessary element of the enterprise’s management process in today’s rapidly changing and uncertain business environment is grounded. The role and functional assignment of innovative creative collectives in the implementation, forming and using the anticipatory management mechanisms at the enterprises are developed.Item Time of exposure to grain processing disinfection in strong electric fields(Національний університет "Львівська політехніка", 2013) Bereka, O.; Usenko, S.A prototype installation is presented developed at the Department of Electric and Electro Technology of the National University of Life and Environmental Sciences of Ukraine, in which, with appropriate electric field intensity in air inclusions partial grain mass discharges are occurring and, accordingly, throughout the volume of products ozone is formed, the concentration of which is governed by the electric field. The results of investigation of barley moisture effect on ozone concentration in the grain mass under the action of a strong electric field are discussed and a nomogram is developed for determining the time required for an effective dose of antiseptic treatment of barley.Item Титульний аркуш до "Econtechmod" Volum 2, nomber 2(Національний університет "Львівська політехніка", 2013)Item Interaction free energy of small particles in an elektrolyte solution(Національний університет "Львівська політехніка", 2013) Shostak, S.; Shkoda, N.; Stetsenko, S.A solution has been constructed of the Debye-Huckel equation for system spheres with arbitrary radii and surface charges or potentials in electrolyte solutions. A general theoretical method for description of inter-particle interaction within such systems has been elaborated. The practically important case of two spheres has been considered in detail. Finite closed formulae to calculation of interaction energy of two spherical particles with constant surface charges have been obtained from general expressions within zero approximation. The known relationships of Deryagin-Landaw-Lifshits-Over- beek theory follow from our formulae in the limit cases.Item Impact voltage deviation on the technological characteristics of crushers(Національний університет "Львівська політехніка", 2013) Savchenko, V.; Sinyavsky, A.The results of research on the influence of voltage deviation on the technological characteristics and energy losses in electric drive of the crusher are presented. Dependence of the productivity, of specific consumption of energy and grinding module on the voltage are established.Item Theoretical approaches to communications management in IT industry of Ukraine(Національний університет "Львівська політехніка", 2013) Semenyshyn, V.; Oleksiv, I.In this article the theoretical approaches to communications management on the labour market of Ukrainian economy are presented. Moreover, the process of communications management on IT industry labour market is analyzed at macro- and micro- levels. Furthermore, the influences of methods of the state regulation on communications processes management of IT industry are discusses in the article.Item Method of morphological analysis of enterprise management organizational structure(Національний університет "Львівська політехніка", 2013) Heorhiadi, N.; Iwaszczuk, N.; Vilhutska, R.The essence of the method of morphological analysis of enterprise management organizational structure is described in the article. Setting levels of morphological decomposition and specification of sets of elements are necessary for morphological analysis. Based on empirical research identified factors that influence the formation and use of enterprises management organizational structures.Item Зміст до "Econtechmod" Volum 2, number 3(Національний університет "Львівська політехніка", 2013)Item Some features of application the delayed feedback controlmethod to Cournot-Puu duopoly model(Національний університет "Львівська політехніка", 2013) Iwaszczuk, N.; Kavalets, I.The Cournot-Puu duopoly model is considered. Delayed feedback control method (DFC-method) is applied to this model. The dependence of rate coming of the system at Cournot equilibrium on the feedback coefficient K choice is shown. The optimal value of this coefficient is defined. The dependence of rate coming of the system at Cournot equilibrium on parameter cr (the ratio of marginal cost firms) is set. The application of DFC-method with two control laws to duopoly model is considered.Item Optimization of linear parametric circuits in the frequency domain(Національний університет "Львівська політехніка", 2013) Shapovalov, Yu.; Mandziy, B.; Bachyk, D.The possibility of application of the frequency symbolic method of analysis of linear parametric circuits to the decision of optimization tasks is considered. There are examples of optimization of single- and doublecircuit parametric amplifier using the objective function based on the calculation of parametric transfer function of a circuit with a symbolic representation of the parameters of the parametric capacity. By the frequency symbolic method the parametric transfer functions are approximated by trigonometric polynomials of Fourier.Item Effect of polarization molecules reagents of the burning reaction on the efficiency of equipment for thermogeneration(Національний університет "Львівська політехніка", 2013) Kovalyshyn, B.The aspects of physical and chemical nature of oxidizing-reduction processes of burning were investigated. The communication of efficiency of fuel equipments with polarizing and activating of molecules-reagents was exposed. Application of molecules electro-activation for optimization of the chemical reactions at burning passed at incineration of gaseous hydrocarbon fuels in the oxidizing air environment was grounded experimentally.Item Method of choosing vectors for investment strategies implementation(Національний університет "Львівська політехніка", 2013) Baydala, N.; Kniaz, S.; Pauk, O.Statement of the problem. In market conditions, the investment activity of enterprises requires diversification of objects and methods of investment. This helps to minimize investment risks, stabilize cash flows in space and time, as well as to increase the guarantee of successful implementation of investment to the entities, which take indirect participation in investment processes. The problem consists in the absence of scientifically grounded methodological regulations regarding the selection of methods of the investment strategies implementation. Consequently, most of the investment decisions are based on an intuitive approach which reduces the possibility of opportuneness and completion in the implementation of purposes established by investors’.Item Modelling of investment development of national economy of Ukraine on basis of regression analysis(Національний університет "Львівська політехніка", 2013) Kuzmin, O.; Pyrog, O.The article considers the results of modeling of investment development of national economy of Ukraine during 2001-2011 on basis of regression analysis. Determine the influence of the investment to economic development of national economy of Ukraine. Sectors of national economy divided to three groups of level of investment impact to economic development.