... know the prices of chemicals in the various markets and the operatingcosts of processes, the problem is then to decide the operating level of each process and amount of eachchemical in the list ... dispersion of the solutionvectors, the approach to restrict the dispersion of the random recourse costs can also be considered.Because the variability of the recourse costs is a measure of its ... ,…, are the extreme rays of C, then the projection of P onto the space of x is given by: projx(P) ϭ {x : Ax Յb, h ϭ 1,…,H; x ʦ X}. This expression requires finding the extreme rays of the polyhedral...