| In the 21st century, a new economic era, the modern enterprises are facing very intensive competition due to the development of science and economy, as well as the globalized information net and market. Time and speed have became the major sources of competitive advantages of the modern enterprises.To deal with the changing market,the supply chain with modern manufacturing enterprises tends to adopt the modern logistics management mode.Traditional logistics management mainly focuses on reducing costs,but modern logistics management emphasizes more on the effect of the whole process,and considers this problem from the achievement of the enterprise's strategy . Under the modern management mode,the supply, production,and sales are arranged as a whole according to the order information. The problem of how to select the location of the distribution center is to jointly optimize the total costs and stability of the fluctuation,thus to achieve the lowest cost or highest benefit on the basis of meeting the needs of customers.It is an essential problem in programming of distribution centers related with the rationalization of the whole logistics system. After reviewing the current literature on selecting location of distribution centers, the attributes of distribution center location is analyzed and the steps and basic methods in locating the distribution center are described. Distribution center location models for the quantitative analysis such as location model of gravity method, fixed-facility location model (CFLP), Baumol-Wolfe have also been described. The thesis focuses on studying the logistics network optimization problems of Gem-Year company, and also demonstrated how to find the solution using mixed integer planning model and Lingo through a case study afterwards. The main contributions of this study and some future work are outlined in the last section of this thesis. |
