U.S. employers added more than 117,000 jobs last month, and the national unemployment rate has dipped to 9.1 percent. But Gary Witt, an assistant professor of statistics and finance at Temple's Fox School of Business, said those numbers aren't going to make an immediate impact. Past recessions, he said, have ended with stronger recoveries and employment gains of up to 400,000 jobs per month. "We have to look at some longer-term structural changes to encourage job growth, but it's not going to be quick — and it won't be easy, politically."