Dr. Udi Nissan will become the head of the Government Companies Authority on Thursday. The government approved his appointment on Sunday after evaluating dozens of candidates. Nissan, 40, holds a doctorate from The Hebrew University of Jerusalem in economic regulations and a post-doc from Harvard's Kennedy School of Government. Nissan spent seven years from 1992-1999 in various positions in the budget branch of the finance ministry. From 1999-2002 he was the head of the Jerusalem Development Authority. He completed his doctorate and post-doc between 2003 and 2007.