1. a Laboratory for Extended Enterprises at Purdue and e-Enterprise Center at Discovery Park, Purdue University, West Lafayette, IN, 47907
2. c Straumur Investment Bank , Reykjavik, Iceland
3. b Laboratory for Extended Enterprises at Purdue and School of Industrial Engineering, Purdue University , West Lafayette, IN, 47907
4. d Department of Industrial Engineering , University of Arkansas , Fayetteville, AR, 72701
5. e Banco Continental , Panama City, Panama