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4 Industrial Management VOLUME 56 NUMBER 2 MARCH/APRIL 2014 EXECUTIVE EDITOR Monica Elliott MANAGING EDITOR Michael Hughes ART DIRECTION Tara Ott DIRECTOR OF CORPORATE PARTNERSHIPS & STRATEGIC ALLIANCES Douglas Long DIRECTOR OF MULTIMEDIA ADVERTISING SALES Hope Teague industrial management Industrial Management (ISSN-0019-8471) is published six times a year by IIE. Copyright © 2014. All rights reserved. Headquarters Industrial Management Institute of Industrial Engineers 3577 Parkway Lane, Suite 200 Norcross, GA 30092 (770) 449-0460; fax (770) 263-8532 Subscription Services For subscription orders; inquiries; back issues and single copies; bulk orders; and address changes, contact Customer Service: (800) 494-0460 or (770) 449-0460; fax (770) 263-8532; email cs@iienet.org Subscription Rates Individual Rates: Free with membership in IIE's Society for Engineering & Management Systems; $35 for other members of IIE; $120 in the U.S.; $148 outside the U.S. Library and Institution rates: Contact Customer Service at (800) 494-0460, (770) 449-0460 or cs@iienet.org. Air mail is an additional $52 per year. Single copies, $13. Editorial inquiries / Letters to the editor Michael Hughes: (770) 349-1110; fax (770) 263-8532; email: mhughes@iienet.org Advertising inquiries Hope Teague: 349-1127; fax (770) 263-8532; email: hteague@iienet.org Reprints For reprint price quotes contact Hope Teague: 349-1127; fax (770) 263-8532; email: hteague@iienet.org SEMS Society for Engineering & Management Systems Board: President Michele D. Dekelbaum; President-elect Wiljeana J. Glover; Immediate Past President Jennifer Farris; Directors: Suzanna Long, Sreekanth Ramakrishnan, Alexandra Medina- Borja, Lukasz Mazur, Mark Jannone, Cecilia Martinez, Edson Pinheiro de Lima and Brian Smith Copies of articles from Industrial Management may be made for personal or internal use with the permission of IIE. For copying beyond that permitted by law, contact Copyright Clearance Center Inc., 222 Rosewood Dr., Danvers, MA 01923; (978) 750-8400. Industrial Management is also available in hard copy form, 35 mm and 16 mm microfilm, and 105 mm microfiche from University Microfilms Inc., 300 North Zeeb Rd., Ann Arbor, MI 48106, U.S.A Postmaster Send address changes to Industrial Management, 3577 Parkway Lane, Suite 200, Norcross, GA 30092. Periodicals postage paid at Norcross, Georgia, U.S.A., and additional mailing offices. PRINTED IN U.S.A. IM MarApr 2014.indd 4 3/24/14 12:12 PM