Research On Locating Unwanted Logistic Facilities

Location problems are mainly focused on how to locate facilities in a programming area as to optimize the problem objectives and further to provide decision makers with best locating solutions. This sort of problems appears in various fields of social life and production activities, and they are important decision problems which bear long-term benefits. Moreover, with the speed up of globalization, and the wide spread of the belief of sustainable development and environment awareness, the location problems of unwanted facilities, particularly, landfills, have earned growingly concern around the world. And at present in China, much of the trash is dumped.To help solve the problem in the framework of environment and economy, this paper develops a multi-objective model for determining locations of landfills, typical unwanted facilities. The first section is a review on the historical development of location problems as well as the state of art. In the second part, a brief introduction of the prerequisite knowledge on fuzzy mathematics is supplied. Next, a multi-objective model for locating landfills is proposed; also its solution properties are discussed in detail. And the fourth section is an extension of the former part, which gives an introduction to the present research on recycling logistics. The last chapter is about further research directions.Our main work are as follows: (1)The model objectives considered are minimization of the total cost and the total measure of risk and the equitable distribution of risk among the population centers; (2)As to the general multi-objective model dealt with fuzzy goal programming, discussions are detailed whether its fuzzy optimal solutions are inner-related with weak efficient solutions and efficient ones as well; (3)And to demonstrate the applicability of the model, a numerical example is provided using two different solution approaches. The results indicate that the weight additive goal programming can help to generate satisfactory solutions at a more acceptable achievement level; (4) Also, we propose a multi-objective logistic facility location model, which takes into consideration the types of waste and the different disposal techniques.