The allocation of water in a multi-country river system necessarily involves conflicting objectives, where increasing water benefits to one country may entail losses to other countries. This paper presents the formulation and application of a multi-objective linear programming model, where each...

This research makes use of a large sample (600,000) of individual telephone calls between local exchanges (cities, villages) within a U.S. region. Callers and callees are identified by their 4-digit SIC (Standard Industrial Classification) code. The intersectoral and interlocational flows...