Study on the Diffusion and Models of Urban Arterial Road Congestion 城市主干路交通拥挤的扩散规律及其模型研究
Background: Pulmonary arterial hypertension ( PAH) is a chronic respiratory disease characterised with persistent elevatory pulmonary arterial pressure because of congestion of pulmonary capillary. 研究背景:肺动脉高压是以肺动脉毛细血管阻塞导致的持久性肺动脉压升高为特点的慢性呼吸系统疾病。
Arterial traffic signal coordination control is an important part of intelligent transportation system ( ITS), and it plays a significant role in relieving traffic congestion and improving traffic efficiency of intersections and highway network. 干线交通信号协调控制是智能交通系统的重要组成部分,在缓解交通拥挤、提高路口路网的通行效率方面发挥着重要作用。