This article considers issues of social entrepreneurship as a key tool for solving social problems in society and as a mechanism for changing the very concept of social policy at the state and regional levels. Therefore, the goal of this article is to analyze the current state of social entrepreneurship in the Volgograd region and its relationship with state and non-state actors. The following were used research methods: dialectical method; logical methods of economic research; methods of data analysis and formal logic. Social entrepreneurship in Russia is a new phenomenon compared to Western countries, and the recently emerged sector of the economy has not yet received such development in the subjects of the Russian Federation as abroad. Currently, the social business is not ready to answer a lot of questions related to solving social problems, however, a certain trend in this direction has been set. The state, society, and businesses are slowly moving away from the traditional understanding of the social activities that each of them is accustomed to carry out. The development of social entrepreneurship helps to smooth out pressing issues of society, speeds up their solution by involving a larger number of stakeholders in the issue.
The justification of the model of dust cloud formation during the passage of a forest train on a dry road surface is given. Given the previous studies on sedimentation of single particles and a dust cloud, a formula is obtained that allows one to calculate the initial and average sedimentation velocity of a dust cloud taking into account changes in the concentration of dust in the cloud.
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