In certain problem areas it is not possible to establish one objective function. There may be several, sometimes conflicting, goals. This paper presents a method of reconciling such conflicting goals by establishing a global objective function. A combinatorial example is given and solved by...

When scheduling tankers, it is necessary to determine delivery dates. If multi-port discharges are permitted it is also necessary to determine the proper volumes to be discharged at each port on a given voyage. This paper presents a means of determining a program of delivery dates and volumes...