The effect of various laser processing parameters on the kerf width and cut quality of Si wafer as well as encapsulated Si wafer is investigated. The parameters are then optimized to minimize the heat affect zone and obtain the best possible cut quality. It has been found that oxygen is the most...

We investigate the causes of the high first day returns of Chinese firms making an initial public offering (IPO) of A-shares from 1991 to 2003 on Shanghai and Shenzhen stock exchanges. Our results show an average underpricing of 175.21 percent. We argue that the IPO underpricing is an...