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This report reviews the air quality management system set up in Beijing, conducts quantitative assessments of the pollution reduction effects in selected areas, and analyzes the new challenges Beijing faces, and provides recommendations for further improvement of air quality.
With the advantages of convenient access and free parking, urban dockless shared bikes are favored by the public. However, the irregular flow of dockless shared bikes poses a challenge for the research of flow pattern.
In this paper, the flow characteristics of dockless shared...