Current issues of anorexia statistics

Anorexia as a new phenomenon for society is seen from both positive and negative sides. The article reveals the aspects each of them. Arguments are presented to support the position that anorexia in 20th century acts as a social problem, a disease, an inhumane attitude to oneself. The relevance of a comprehensive study and prevention of anorexia among young people is presented based on available statistical data. An approach to the concept of anorexia as an object of applied statistical research is justified. The enlarged groups of factors affecting the scale of its spread and the intensity of its development are determined. The authors proposed and justified an original system of indicators of anorexia statistics, revealing the essence of the studied social phenomenon according to the logic of “distribution – structure-consequences”.

Optimization of SOFC stack gas distribution structure based on BP Neural network and CFD

The flow field distribution of solid oxide fuel cells significantly affects the performance of the stack. The flow uniformity can be improved and the power generation efficiency can be improved by optimizing the gas distribution structure of the stack. Based on the simplified 6kW stack model, the stack gas distribution structure with two-stage buffer cavity was designed, and the stack model was numerically simulated by ANSYS Fluent software. The BP neural network model, which can predict the uniformity of the outlet of the integrated stack, is established successfully. The parameters of the gas distribution structure are analyzed and optimized by using the orthogonal test and BP neural network. The results show that at the same time considering pile distribution structure under the condition of surface area and uniformity, when the first stage inlet buffer chamber depth is 40 mm, the channel width is 40 mm, the secondary inlet buffer chamber depth is 80 mm, can effectively reduce the electric pile distribution structure, surface area, to reduce heat loss, at the same time guarantee the integrated electric reactor outlet flow uniformity of more than 96%, greatly improves the efficiency of power generation.

Analysis of Public Procurement of Medicines in Russia

One of the main components of the drug supply of the country's population with medicines is public procurement, which at the legislative level implements the principle of universal access to medical care and guarantees the quality of medical services provided. The authors analyzed the system of public procurement of medicines in Russia: the main sources of financing, customers and suppliers, territorial distribution, structure of methods of placing state orders are determined.