| Now retail chains are booming in the word, which the principles of modern industrial mass production is applied to the field of commercial circulation. Its main competitive advantage are the rapid expansion to a large scale by standardized manual, faster inventory turns and lower logistics costs which obtained by information technology and distribution centers. In this paper from the operation of the whole supply chain, three links (store sectors, stores and distribution, vendors and distribution) are optimized to speed up inventory turnover and reduce the cost of operation in retail chains, which can increase the profits of retail chains.It is the eternal theme in the modern enterprises that the level of management and operation are improved and the operating costs are reduced. In this paper from the systematic, integrated perspective the problem of inventory/distribution in retail chains is analyzed by building model. And the means of inventory management and distribution scheduling are provided, which can reduce the costs, improve enterprise management level, enhance their agility and responsiveness. All can supply the guidance and reference for enterprise management.In this paper, Firstly presenting the literatures of the inventory/distribution aspects about the three links in the retail chains, which are stores, distribution center and stores, manufacturers and distribution center. And summarizing the contributionsã€shortcomings, indicating the future direction of development. On the basis of above described introducing the main contents of this article research methods and innovation points.Then describing a network structure of retail supply chains; On the one hand studying multi-level inventory coordination mechanism of retail chains by which analysis the traditional inventory management and point out internet of things providing a good means for the multi-level inventory management; On the other hand presenting the problems of distribution management in retail chains. According to the inventory/distribution problem the main features and above described the main research questions of inventory/ distribution in the retail chains are provided.The main researchs of inventory/distribution optimization decision about three links in retail chains are as follows:1. Studying the relationship of the amount of store shelf display and sales, this can speed up inventory turns and reduce the backlog and lack of goods. In the chapter from the goods inner elasticity of demand and alternative, the curve is exponent between the sales and the amount of shelf display when merchandises are adequate; the need is constant when the amount of shelf display is less than a concert volume, which allows customers loss and delay sales. When the curve of sales is plotted, the equation of decision can be obtained. But it is solved by a way of simple algebra. So the intervals of solution are discussed, and approximate solutions are obtained by Newton-Raphson iterative method.2. Assuming the delivery routes are certain, when the total cost of inventory management and distribution fees is the lowest, the optimization of the volume of order, frequency of distribution can obtained by the integration of inventory/distribution. In the chapter, the objects of research are a distribution center and many stores; the need of store is the Poisson distribution; the two kind of inventory/distribution strategy are settled, which are timed-based and quantity-based. The mathematical analysis and comparison about the two modeling are conducted.3. There are many times dispatch for the distribution center and the manufacturer, which can need to optimize the volume of dispatch and frequency. So in the link firstly consider the cost of inventory management, then distribution costs were added to it, a total cost model is created. Finally, according to the variations of cost, taking into account different costs of changes in the distribution of frequencies, find the most optimal situation that the volume of dispatch and the frequency are required.Based on above research, this paper has three innovations:1. The sales are based on the amount of shelf display, considering the sale loss and the opportunity cost in the optimization of stores about the inventory/ distribution, which the forecast is perfect. This increase turnover of goods, get the maximum profit margins.2. According to the actual situation of retail chain, the two optimization models that are timed-based and quantity-based were established in the link of distribution center and stores, which can obtain distribution frequency, distribution volume, and distribution cycles.3. Firstly setting up inventory model according to many dispatch in the link of the distribution and stores, then shipping costs is added to the model, finally according to the variations of cost, find the optimal state. |
