ABSTRACT
The class of models that the author sets out to describe is of the fixed charge mixed integer programming type, which views regional waste management system as network flows. More technically, he points out an affinity of his model with that of Walker, with their algorithm being an extension and improvement over that of Marks and Liebman. The models of the first class are called the static models and of the other class dynamic model. In the static models, the wastes generated in the region are assumed to remain at a constant level throughout the planning horizon. There are metropolitan areas where waste generation is increasing every year and the dynamic model appropriately deals with such a situation. Static models can also be used by planners who plan for a short period of time, less than say 5–8 years, and believe that for that period, the assumption of constant waste generation is a reasonable approximation to the actual situation.
