[1] Rutgers State Univ, Dept Management Sci & Informat Syst, Newark, NJ 07102 USA
[2] Rutgers State Univ, Rutgers Ctr Operat Res, Newark, NJ 07102 USA
[3] Virginia Polytech Inst & State Univ, Dept Stat, Blacksburg, VA 24061 USA
[4] Virginia Polytech Inst & State Univ, Dept Forestry, Blacksburg, VA 24061 USA