Modelling of the Supply Chain Planning for the Business and Economic Security

Abstract— Strategic supply-chain planning that combines aspects of business-strategy formulation with aspects of tactical supply-chain planning can make each far more valuable to the planning effort than either would be alone. The purpose of this article is to assess the economic security of the enterprise in terms of the efficiency of the use of supply chain planning, taking into account the possibility of production and sale of manufactured products. In case of falling demand for products, there are free capacities in the enterprise, which are useful to use to organize the production of additional items. Underutilization of the enterprise leads to higher costs, lower profitability and lower revenues, thus reducing the interest of the owners in the enterprise and thus threatening its existence. The article proposes a system of mathematical models, which allows to effectively use the capacity of the enterprise to increase its profitability due to the self-contained production of additional nomenclature, due to the use of temporarily increasing capacity. As the main hypothesis in the construction of the model, it is assumed that the economic security of the enterprise is determined by the degree of satisfaction of the economic interests of persons interested in the results of its activities. Therefore, it is proposed to consider the economic security of the enterprise from the point of view of effective use of the assets of the enterprise, which creates prerequisites for timely and full fulfilment of mutual obligations by the enterprise on the one hand, and by the owner, personnel, clients, partners, the State on the other. The proposed system of mathematical models implies that the enterprise is oriented towards the production of mass products, the realization of which involves a certain risk. The model assumes that the enterprise produces several types of industrial nomenclature and has the possibility to organize the production of additional nomenclature using available free capacities. The proposed model is intended to assess the feasibility of production, determine the best value for money and thereby increase the profitability of the enterprise. The use of a system of models improves the current activities of the enterprise, the feasibility and effectiveness of the existing innovation policy for the renewal of the production programme. The article provides recommendations for practical use of the model.

Non-equilibrium melting processes of silicate melts with different silica content at low-temperature plasma

This article is devoted to research the possibility of high-temperature silicate melts producing from different silica content at low-temperature plasma taking into account non-equilibrium melting processes

Conformal Transformations of the Wigner Function and Solutions of the Quantum Corrected Vlasov Equation

We study conformal properties of the quantum kinetic equations in curved spacetime. A transformation law for the covariant Wigner function under conformal transformations of a spacetime is derived by using the formalism of tangent bundles. The conformal invariance of the quantum corrected Vlasov equation is proven. This provides a basis for generating new solutions of the quantum kinetic equations in the presence of gravitational and other external fields. We use our method to find explicit quantum corrections to the class of locally isotropic distributions, to which equilibrium distributions belong. We show that the quantum corrected stress--energy tensor for such distributions has, in general, a non--equilibrium structure. Local thermal equilibrium is possible in quantum systems only if an underlying spacetime is conformally static (not stationary). Possible applications of our results are discussed.Comment: 30 page

Processing line for industrial radiation-thermal synthesis of doped lithium ferrite powders

The paper considers the issues of industrial production of doped lithium ferrite powders by radiation-thermal method. A technological scheme of the processing line is suggested. The radiation-thermal technological scheme enables production of powders with technical characteristics close to the required ones under relatively low temperature annealing conditions without intermediate mixing. The optimal conditions of the radiation-thermal synthesis are achieved isothermally under irradiation by the electron beam with energy of 2.5 MeV in the temperature range of 700-750 °С within~ 120 min

Effect of cations (Mg2+, Zn2+, Cd2+) on formation of the mineral phase in Ca(NO3)2-Mg(NO3)2-Na2HPO4-H2O system

Synthesis of hydroxyapatite in the system Ca(NO3)2-Me(NO3)2-NaHPO4-H2O with pH in the range of 6-12.2 is performed, and hydroxyapatite of B-type is formed. The effect of magnesium, zinc and cadmium ions on the properties of hydroxyapatite is studied. It is shown that as the concentration of these ions increases, the crystallinity of hydroxyapatite and the Ca/P ratio decreases. It is found that in all the experiments Zn2+ cations affect the hydroxyapatite structure to a lesser extent which results in less structural defects, wherein the Ca/P ratio attains the highest values. It is shown that the solubility of the samples containing zinc ions is greater than that of the samples with other additives

Non-equilibrium melting processes of silicate melts with different silica content at low-temperature plasma

This article is devoted to research the possibility of high-temperature silicate melts producing from different silica content at low-temperature plasma taking into account non-equilibrium melting processes

Effect of cations (Mg2+, Zn2+, Cd2+) on formation of the mineral phase in Ca(NO3)2-Mg(NO3)2-Na2HPO4-H2O system

Synthesis of hydroxyapatite in the system Ca(NO3)2-Me(NO3)2-NaHPO4-H2O with pH in the range of 6-12.2 is performed, and hydroxyapatite of B-type is formed. The effect of magnesium, zinc and cadmium ions on the properties of hydroxyapatite is studied. It is shown that as the concentration of these ions increases, the crystallinity of hydroxyapatite and the Ca/P ratio decreases. It is found that in all the experiments Zn2+ cations affect the hydroxyapatite structure to a lesser extent which results in less structural defects, wherein the Ca/P ratio attains the highest values. It is shown that the solubility of the samples containing zinc ions is greater than that of the samples with other additives

Free Vibrations of Multilayered Orthotropic Ribbed Cylindrical Shells With Attached Solid Bodies

Kairov, A. S. Free Vibrations of Multilayered Orthotropic Ribbed Cylindrical Shells With Attached Solid Bodies / A. S. Kairov, O. I. Vlasov // Intern. Journ. of mechanical engineering and information technology. – 2018. – Vol. 06, iss. 03. – P. 1772–1777.It is considered the problem of investigation of free vibrations of elastic multilayer orthotropic cylindrical shells made of a composite material with reinforcing ribs and attached solid bodies. A more precise mathematical model of vibrations is developed in the linear equation, which takes into consideration the structural heterogeneity of the shell system. The solution is obtained by the Ritz variational method. The results of a numerical investigation of natural frequencies and free vibration forms of supported cylindrical shells are presented

Методика определения временных интервалов по видеозаписям

Video recording as a product of informational and communication technologies has a specific place in the development of the society. The problem of forensic analysis of video recordings has a long history and transforms along with the development of technical means. Video recordings are a valuable source of factual data on cases involving traffic accidents, when in addition to describing the contentrelated side of the case, it is necessary to make certain calculations of temporal and spatial characteristics.The paper aims to form a unified methodological approach to establishing the temporal characteristics of events recorded on a video as part of forensic analysis of video footage. The authors present a framework for selecting a correct source of data when determining time intervals, describe a step-by-step sequence of actions for an expert to solve the question put to him, and the methods to determine time intervals.Видеозапись как продукт системы информационных и коммуникационных технологий занимает определенное место в развитии общества. Проблема криминалистического исследования видеозаписей существует давно, трансформируясь вместе с развитием технических средств. Видеозаписи являются источниками фактических данных в делах, связанных с дорожнотранспортными происшествиями, когда помимо описания содержательной стороны дела необходимы вычисления и расчеты временных и пространственных характеристик.Статья направлена на формирование единого методического подхода к установлению временных характеристик событий, зафиксированных на видеоизображениях, в рамках производства криминалистических экспертиз видеозаписей. Представлена схема выбора корректного источника данных при определении временных интервалов, описаны пошаговая последовательность действий эксперта для решения поставленного перед ним вопроса и методы определения временных интервалов