作者: Harbir Singh

KNOWLEDGE@WHARTON (http://knowledge.wharton.upenn.edu) is abiweekly online resource that offers the latest business andfinance insights and research, including analysis of currenttrends, interviews with industry leaders, perspectives from the Wharton faculty, and information from Wharton seminars andprograms. With a subscriber base of 180, 000 registered users inmore than 189 countries, Knowledge@Wharton is recognized worldwideas a leading source of unique and timely information on the globalbusiness marketplace. MUKUL PANDYA is the Executive Editor of Knowledge@Wharton. HARBIR SINGH is Chair of the Management Department at the Wharton School and has published articles in the California Management Review and the Strategic Management Journal. ROBERT E. MITTELSTAEDT is Vice Dean and Director of the Aresty Institute of Executive Education at the Wharton School. He is alsoa published author. ERIC CLEMONS is a distinguished professor at the Wharton School anda published author.