Exposure to airborne pollution has substantial adverse health consequences (Cohen et al, 2004). Governments around the world have paid attention to this problem and started to take actions to mitigate it harmful effects. In this paper, we investigate how a change in the consumption tax structure...

The Simplified Express Consignment Clearance System was first introduced in Taiwan in 2001 to improve the effectiveness and efficiency of customs clearance operations of air cargo. This system, which is based on simplified declaration procedures, is expected to facilitate the effective and...