-regional heterogeneity of the stage at which policy is implemented. Second, this stage variation identifies policy effects inside a window of … applications, and show that it captures heterogeneous policy effects across stages. …

-regional heterogeneity of the stage at which policy is implemented. Second, this stage variation identifies policy effects inside a window of … applications, and show that it captures heterogeneous policy effects across stages. …

-regional heterogeneity of the stage at which policy is implemented. Second, this stage variation identifies policy effects inside a window of … applications, and show that it captures heterogeneous policy effects across stages. …

-cutoff regression discontinuity design to accurately measure the policy effects of multi-hierarchical EPI on air quality improvement in ….5, PM10 and NO2. Moreover, there were great differences in the policy effects of the multi-hierarchical EPI for air quality … improvement amongst cities in YRD. The higher administrative level of EPI, the stronger policy effects of the corresponding EPI …

-regional heterogeneity of the stage at which policy is implemented. Second, this stage variation identifies policy effects inside a window of … applications, and show that it captures heterogeneous policy effects across stages. …

-regional heterogeneity of the stage at which policy is implemented. Second, this stage variation identifies policy effects inside a window of … applications, and show that it captures heterogeneous policy effects across stages. …

-regional heterogeneity of the stage at which policy is implemented. Second, this stage variation identifies policy effects inside a window of … applications, and show that it captures heterogeneous policy effects across stages. …