Professors Leff (Management Science, Vol. 25, No. 8 (1979), p. 810) and Robinson (Management Science, Vol. 26, No. 4 (1980), pp. 433--434) have raised an interesting debate regarding car pool systems, algorithms, and human problems. Professor Leff sees the use of increasingly refined algorithms...

The factored transportation problem is one having cost coefficients of the form c_ij = u_iv_j. The main result proven in this paper is that if rows are arranged according to nonincreasing u_i and columns by nondecreasing v_j, then the northwest corner rule provides an optimal solution. Applications...

This paper describes a branch and bound approach for optimizing a media selection problem, namely, to choose the best set of mailing lists to maximize audience reach. Prompted by a national retailer's interest in more effective and efficient direct mail catalogue distribution, the algorithm...