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The article deals with the issue of modeling taking into consideration nitrogen dioxide pollution of the atmospheric surface layer caused by vehicle exhaust gases. The interval data analysis methods were suggested. The method of identifying the mathematical model of the distribution of nitrogen dioxide as an atmospheric air pollutant based on the analysis of data with known measurement errors was proposed and grounded for the first time. The obtained mathematical model in the form of a difference equation is characterized by the guaranteed accuracy of forecasting nitrogen dioxide concentrations in a specified area of the city. It also adequately takes into account traffic changes which significantly reduces the costs of environmental control and monitoring. The proposed new model identification method is more effective in terms of computational time complexity compared to the known method and it is based on taking into account measurement errors which in the final case provides predictive properties of the model with guaranteed accuracy.

In modern conditions of the energy market crisis, the issues of increasing the efficiency of enterprises development in the energy sector of Ukraine have acquired particular relevance. The main task of energy enterprises is reliable and high-quality electricity supply to consumers at economically feasible tariffs. Energy has a number of its specific characteristics that fundamentally distinguish it from other types of economic activity: technological unity and coincidence in time of the processes of generation, transmission, distribution and consumption of energy; parallel operation of all stations for a combined daily load schedule; rapid development of accidents, which requires automatic control of modes. Energy is a specific commodity that distinguishes it from other types of commodities, namely: the impossibility of efficiently storing energy in large volumes; the impersonality of energy as a commodity, since all electricity is supplied to the general network; impossibility of energy rejection; energy demand is constant. For factor analysis, the principal component method was applied, which made it possible to reduce the dimension of the factor space and carry out its structuring and interpretation in the form of control factors. This approach makes it possible to carry out mathematical modeling of the dynamics of the main indicators of the activities of the enterprises under consideration in order to manage them.

The concepts "standard of living" and "quality of life" play an essential role in society. They are indicators of assessing the socio-economic situation in a country. In the paper the model the dynamics of living standards which makes it possible to substantiate management decisions on the formation of a remuneration system at enterprises, taking into account the financial security of employees is developed. The use of the model showed that the financial indicators of the salary system effectiveness at enterprises do not reflect its adequate impact on the living standard of employees. Namely, the positive tendencies of an increase in average salary and an increase in the salary bill do not fully ensure an increase in the level indicator reflecting the volume of consumption of basic food products. This is due to the fact that the level of the real salary index is insufficient to fully meet the needs of employees.

The development of smart specialization in the economy, the establishment of the sustainable urban development principles, eco-transport and alternative energy usage, the introduction of innovative technologies in the formation of eco-transport infrastructure lead to the transformation of marketing activities of energy service companies in the direction of increasing the role of responsible energy resources consumption. In the view of it, this article is devoted to the study of the digital marketing communications technologies implementation, such as smart grids, by energy service companies, into the cyclic management system of urban transport infrastructure. The diversification of vehicles in cities running on alternative fuels is highlighted. The prerequisites for the application of the smart approach to the development in cyclic management of urban transport infrastructure are considered. A marketing communication model between users of eco-transport and energy service companies has been developed, which will help to increase the eco-transport demand and reduce the anthropogenic impact on the environment.

An approach to formation an effective pricing strategy for enterprises of biofuel market is proposed. The method of economically grounded pricing for products is put forward. This approach is based on the Gutenberg model, which centres on the theory of elasticity. This makes it possible to partially smooth over the impact of uncertainty and information limitation, which affects the price in the future. The developed technique makes it possible to solve the classic problem of strategic management-the task of determining the optimal price and the optimum volume of sales, which allows to actualize the strategy of price policy of enterprise for profit maximizing.

The article proposes an approach to management of enterprise’s assortment policy, which is based on the analysis of uncertainty in the formation of the product assortment structure with the use of expert evaluation and elements of fuzzy sets theory. It takes into account the socio-psychological and economic market factors, such as: attractiveness of the enterprise, quality of the offered products, advantages of one or another supplier or product

The problem of setting the averaging intervals of instantaneous values of measured concentrations of harmful emissions was considered. This problem is solved by using correlation analysis between the traffic intensity and air pollution by their emissions. The optimum averaging interval of instant values is determined.

The problem of structural identification of static models of interval systems. Showing getting a unique solution for the problem of structural identification for different initial given structure models based on the complexity of the proposed algorithm sequential structures. An adaptive iterative procedure, which reduces the dependence of the result of structural identification of the magnitude interval error data.

It is shown in this paper that mathematical model of dynamics of Web site quality characteristics can be represented in kind of a system of linear differential equations with a set of influential factors. The main quality indicators of Web sites were defined and analyzed. At that integrated index of attendance is weighed value of Web site quality characteristics.