The issues of atmospheric pollution, including noise pollution, are considered. The dependences of the concentration of carbon monoxide at distances from the roadway at different directions and speeds of the wind flow obtained according to MRR-2017 are presented. The influence of motor transport on the condition of the air basin and the health of the urban population is considered. The levels of noise pollution in the main-line territories of Volgograd, as well as the main pollutants in the atmospheric air of the main-line territories, are considered. The dispersion of CO concentration at different wind speeds at different angles of wind direction to the road and traffic noise levels depending on the days of the week, time of day, and traffic flow intensity are considered.
Keywords: wind flow direction and speed, roadway, atmospheric air, mainline territories, traffic noise levels, carbon monoxide concentration, vehicle fleet, cargo flow
The article discusses the features of constructing a special connection based on fiber-optic communication lines. An analysis is conducted on the reliability of using fiber-optic communication lines in terms of the possibility of unauthorized interception of transmitted information. The advantages of practical use of communication systems based on fiber-optic lines are presented. The methods of protecting fiber-optic communication lines from unauthorized access are considered, where the priority method of protecting information is encryption using various methods. In conclusion, the measures necessary for building a reliable communication system based on fiber-optic lines are emphasized.
Keywords: information, special communication, communication segments, public communication, optical fiber, fiber-optic lines, unauthorized access, encryption, communication system construction, cryptographic protocols