Development of a Decision Support System of the Cooperative Supply Chain in Consideration of Satisfaction of Multi-objective Multi-player

Abstract

In order to maintain a supply chain, when the action which thought "profits" as important is chosen, the social norm which carried out "it is consideration about environment" cannot be attained. That is, the system of giving incentives, such as a carbon tax, to a selfish market mechanism is introduced, and an environmental target is attained. However, since the conditions of complete information and perfect competition are not satisfied in an actual supply chain, efficient realization cannot be expected only by introducing systems, such as a carbon tax. In this study, its attention is paid to the relationship of the degree of selection according to the profits of the system and policy to environmental impact reduction, and a player in the cyclical form supply chain which consists of a maker, a shipping storage, a store, and a recycling factory. Moreover, this study aims at reconciling two actions: the social norm action "environmental impact reduction", and the market prescriptive behavior "maximization of profits", with which each player collides, and attaining "reservation of economic efficiency", and an "environmental target" in cooperation. There, two effects on a re-product are included in a cyclical form supply chain model: the cannibalization effect of the customer demand by a new product and a re-product appearing on the market in a market simultaneously by resource circulation and the product value and the orientation toward price raises of a customer in and outside the country. Moreover, when both information and competition are imperfect, a method for many players to perform satisfactory maximization for the many objects for economic efficiency and environment by calculating "adjustment of opinion" solution is developed. An incentive is given to decision-making of each player by evaluating the system to "environmental impact reduction", and the effect of a policy using this, and "reservation of economic efficiency" and an "environmental target" are made to attain.