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The Economic-Mathematical Modeling of the Optimal Structure of Investment of a Mining and Dressing Enterprise
Kovalchuk V. A., Kovalchuk T. M.

Kovalchuk, Viktor A., and Kovalchuk, Tetiana M. (2020) “The Economic-Mathematical Modeling of the Optimal Structure of Investment of a Mining and Dressing Enterprise.” Business Inform 2:108–114.
https://doi.org/10.32983/2222-4459-2020-2-108-114

Section: Economic and Mathematical Modeling

UDC 519.86[330.322.622.012]

Abstract:
In accordance with the task of substantiating the economic-mathematical model and the method of optimizing the main directions of investment to maintain the raw-materials and technology base of a mining and dressing enterprise, their current status and problematic issues of production are analyzed. The main areas of investment activity are highlighted and their connection with the major resource and technological facilities of the enterprise’s production infrastructure is displayed. A stochastic factor analysis is carried out and the closeness of investment investments by the areas with the main economic indicators of the enterprise as a whole is determined. The most acceptable effective indicator for the working conditions of a particular enterprise is substantiated. Correlations between net profit and volumes of investment in technical rearmament, major repairs to machinery and equipment and capital construction are determined. The nature and degree of joint influence of directions of investments on net profit are analyzed. A criterion for evaluating the efficiency of investment use is proposed and an economic and mathematical model is developed. The method of optimizing the structure of directions, which is the method of dynamic programming, is substantiated. The model is adapted and implemented in the working conditions of a typical mining and dressing enterprise. The results of the efficiency of implementation of the optimal structure of investment directions are presented. For the working conditions of a particular mining and dressing enterprise, an optimal structure is determined that, in comparison with the actual, allowed to get a significant increase in net profit. The possibility of expanding the application area of economic-mathematical models together with the methods of optimization of this type to solve other production tasks has been indicated.

Keywords: modeling, investment, investment structure, mining and dressing enterprise, efficiency.

Fig.: 2. Tabl.: 3. Formulae: 9. Bibl.: 13.

Kovalchuk Viktor A. – Doctor of Sciences (Engineering), Professor, Professor, Department of Economics, organization and management of enterprises, Kryvyi Rih National University (11 Vitaliia Matusevycha Str., Kryvyi Rіh, Dnіpropetrovsk region, 50027, Ukraine)
Email: [email protected]
Kovalchuk Tetiana M. – Candidate of Sciences (Engineering), Associate Professor, Associate Professor, Department of Higher Mathematics, Kryvyi Rih National University (11 Vitaliia Matusevycha Str., Kryvyi Rіh, Dnіpropetrovsk region, 50027, Ukraine)
Email: kovalchuk.tm.knu@ gmail.com

List of references in article

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Lipych, L. H., and Ivashko, O. A. “Ekonomiko-matematychne modeliuvannia investytsiinykh yavyshch i protsesiv na terytoriiakh zi spetsialnym rezhymom investytsiinoi diialnosti“ [Economic and Mathematical Modeling of Investment Phenomena and Processes in Territories with Special Regime of Investment Activity]. Natsionalni zapysky universytetu «Ostrozka akademiia». Seriia «Ekonomika». 2010. https://eprints.oa.edu.ua/6928/1/55.pdf
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