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The paper discusses the technological complex of wastewater treatment of wastewater treatment of petrol stations. Based on the review of the main modeling methods of discrete-continuous chemical and engineering processes, it substantiates expediency of using the theory of Petri nets (PN) for modeling the process of wastewater treatment of petrol stations. PN enables to simulate discrete parallel asynchronous processes, to get a graphical representation of the network, to describe the system at different abstractio...

The article seeks to identify the most important predictors of profit of credit institutions. This involves the use of multiple regression for econometric modeling of several variables on the results of banks’ operations. The study aims to show the capabilities of multi-factor regression in the analysis of credit institutions. The paper proposes a methodological approach to the measurement of marginal predictors of credit institutions. The authors use special techniques to adjust the models to avoid a collinearity...