A Fuzzy-Analytical Hierarchy Model for Solid Waste Management Location in South-West Nigeria

Abstract

Rapid urbanization and industrialization have led to the generation of considerable quantities of municipal and industrial wastes. These often result in spread of diseases, contaminations of water body and pollution of soil, thus the selection of a good landfill location is a multiple criteria problem.

This work developed fuzzy analytical hierarchical model as a decision support system. The fuzzy based hierarchical model first converted the perception into triangular fuzzy numbers and used the concept of extent value analysis to obtain the significance of each of the criterion, sub criterion and the decision alternative.

The developed model was applied to a landfill location problem of Ibadan, Oyo state. Five main criteria, sixteen sub criteria and three decision alternatives were considered via; Eleyele, Moniya and Iyana Ofa. The performances of Eleyele, Moniya, and Iyana Ofa through fuzzy based hierarchical model are 0.314, 0.324 and 0.385 respectively. The decision making technique indicates that, Iyana Ofa which has the highest performance should be selected for landfill location in Ibadan.

Fuzzy analytic hierarchic process as a decision making technique is robust and can reduce imprecision in the mapping of perceptions of decision makers into numerical evaluation, thus making fuzzy based hierarchical model accurate, stable and reliable.

Keywords: China insurance industry, Foreign fund, Challenge