Purpose: The purpose of this study is to improve the position and posture accuracy of posture alignment mechanism. The automatic drilling and riveting machine is an important equipment for aircraft assembly. The alignment accuracy of position and posture of the bracket type posture alignment...

In this paper we characterize the extent of economic integration between Guangdong, Hong Kong, Macau, and Taiwan (HKMT). We do not find, for the period of 1999-2003, consistent evidence that economic activity on the part of HKMT-funded companies contributed to productivity growth in Guangdong...

This paper assesses the effects of continuous treatments by weighting methods under unconfoundedness. We propose a new statistic termed weighted sample distance covariance, as well as a new identification method of balancing weights that incorporates weighted sample distance covariance and...