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The article discusses the problems associated with the tourism industry and the hotel business during the pandemic. A study was carried out and relevant conclusions were presented on how the pandemic affected the hotel business in Europe and Russia. The authors examined and analyzed in detail the indicators of forecasts in the sphere of the Russian hotel business, particularly in the regions. The authors paid special attention to the study of open public spaces and conducted a detailed analysis, which made it possible to identify the opportunities for the development of the hotel business. In the article the main trends of a pandemic and post-pandemic are studied – the need to reinforce sanitary measures. The research focuses on identifying the features of the economic state of the regions during the pandemic. The authors developed and substantiated the areas that are relevant, useful and applicable for the hotel business; revealed the features of the process of restoration of the hotel business. Special attention is paid to the study of state support measures; the features of their further actualization for the development of the tourism industry are presented. The authors have proposed the ways to overcome the crisis, contributing to a slow, but accurate and safe recovery of the hotel business and an increase in demand.

In the framework of the study, the authors consider conceptual approaches to improve the management system of agrarian sphere development of regions in the realities of this industry functioning in the Russian Federation. Agrarian sphere is shown in aspects of socio-economic territorial system with its subsystems. The transition mechanisms of the agrarian sphere to the rails of sustainable development due to the choice of priority development directions within the life cycle are presented. The necessity of applying an integrated approach to the solution of industrial and social problems of the agricultural sector of the country is proved and reasoned.

This article presents a systemic approach to municipal solid waste management in the Kaliningrad region. This approach is based on innovative practices and marketing research. It will contribute to regional development in line with the principles of green economy and cross-border cooperation in the Baltic countries. An innovative ecosystem should be created in the region to reach this goal, along with a network of solid municipal waste recycling enterprises. This network should include microenterprises. The study offers a universal business model for a recycling microenterprise.

The automated toolkit for assessing environmental and investment attractiveness of a mining region and the results of its application are discussed in the article. This toolkit includes the optimization mathematical model, the algorithms for the interaction between a regional control center and a producer within the territory, as well as the automated software package for their analysis. The use of the optimization mathematical model makes it possible to take into account the maximum economic potential of a producer, which determines, respectively, a mining region’s environment pollution potential. Accounting for environmental risks will allow the control center or other decision makers to identify not only the optimal pattern of eco-economic interaction in the region, but also reflect changes in the environmental and investment climate as a combination of economic potential and involved risks. The model and the algorithms of interaction between a regional control center and a producer, as well as the results of their numerical analysis given in this paper, allow considering this toolkit as an effective decision support tool aimed at improving environmental and investment attractiveness of a mining region by encouraging a producer to use the best available technologies and conserve the natural environment.

A linear multivariate regression model for the IR spectra of gasolineare used in the paper. On the basis of a number of test samples (alkylate, reformate, regular, premium), an equation was obtained for calculating the content of aromatic hydrocarbons in gasolines based on the transmission values at wave numbers: 1600, 1500, 870, 810, 750 cm-1. The calculated equation was tested on a series of regular gasolines and by the cross-validation method. The test results showed good values of the correlation coefficient (0,96) and the standard deviation (0,4 and 3,5). The range of the content of aromatic hydrocarbons in the test samples is in the range of 24,9 - 30,5 mass %.

This work is devoted to the rural areas’ integrated development issues. The advantages of a systematic approach for the sustainable development paradigm main policies’ goals implementation and the possibility of using geoinformation technologies as a tool for multidimensional analysis of rural areas are considered. A two-stage methodology for monitoring the rural settlements development, which makes it possible to assess the territory at the federal and local levels by a set of indicators reflecting the main aspects of socio-economic processes, is proposed. Special attention is paid to assessing the quality of the environment by three groups of factors that take into account environmental comfort, movement comfort and other indicators characterizing the comfort of living from the point of view of the territorial residents’ individual needs.

The multifunctionality of the city makes it possible to consider it from the point of view of the urbanized landscape, giving due attention to the concept of its sustainable development. The development is based on the landscape-ecological approach, which makes it possible to analyze the natural, social, economic and urban planning subsystems of the city’s land-property complex. This approach made it possible to assess natural and anthropogenic processes, to establish the degree of degradation of the urban landscape and, based on the method of analyzing hierarchies, the results of sociocultural surveys, to develop a set of measures for the rational organization of the use and protection of urban lands [1, 2, 5, 6, 7, 9-11].

The study included survey of signal-controlled pedestrian crossings throughout the whole city of Rostov-on-Don, a geoinformation model was built, field surveys of pedestrian traffic intensity at signal-controlled pedestrian crossings were conducted in order to identify zones of highest concentration of pedestrian flows, as well as to develop the city’s Intelligent Transport System (ITS) and mitigate conflict situations at the city’s crossings.