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The article describes the results of modeling and evaluating the dynamics of a road train with an active trailer link based on valve-inductor electric machines. It gives a general view and an equivalent road train diagram, shows a generalized simulation model of the movement of a two-link road train developed in the Simulink environment for studying motion in various road conditions. We proposed a reference surface model based on the terrain map, blocks were developed for calculating the road tilt angles separately for the tractor and the semitrailer, taking into account the type of coating under each road train wheel at the current time. The visualization of the movement of the road train is shown, the results of modeling and evaluation of the dynamics of the road train with an active trailer link based on valve-induction electric machines for creating control systems for individual drives of the electric motor-wheel of an active semi-trailer and developing a program and methodology of full-scale experimental research representations.

The article deals with the problems of management of commercial medical organizations in the context of promoting their medical services based on the use of strategies relevant to medical institutions implemented through digital tools of Internet communication interaction with real and potential consumers. In the current conditions of growing digitalization of all spheres of society, it is already difficult to imagine the process of providing services, including medicine, without interaction via the Internet. At the same time, the real efficiency of traditional offline channels is falling, giving way to online space, and only those companies that have been able to adapt to the harsh market realities “survive”. In this regard, the author identified the most suitable promotion strategies for medical organizations and the corresponding digital tools. And also taking into account various Russian and Western research, publications on this topic and modern experience, the researcher proposed an effective strategy for medical organization promotion based on Internet marketing tools, which were tested in one of the private medical clinics in Voronezh. The presented strategy can be used with certain transformations by other commercial medical institutions and enterprises of beauty industry.

The article describes the results of modeling and evaluating the dynamics of movement of a wheeled tractor. It presents blocks of Simulink schemes for calculating vertical reactions, the gravitational projection of a tractor, the drag force, and the dynamics of a tractor body.