| Essentially speaking, the supply chain structure reflects its business model and has a significant impact to the performance of the entire supply chain. In reality, different supply chain structures are often used to achieve different objectives, which are closely related to the product and industry characteristics on the supply chain. Each supply chain structure has its own successful story, so it is difficult to say which the best supply chain structure is in the absence of specific industries and products. However, different supply chain structures actually have a big difference in the coordination efficiency such as information transmission efficiency and cost. Thus, it needs to analyze supply chain coordination efficiency from this point of view of the overall structure, and compare characteristics of different types of supply chain structures, to provide important support to supply chain options (build, optimize) for a specific industry or product. However, we can find that the existing literatures of supply chain coordination research based on the overall structure are clearly insufficient from the current research results. This article attempts to analyze supply chain coordination efficiency from the angle of the overall structure.Firstly, the article defines the concepts of supply chain coordinator and the supply chain coordination structure, then focus on modeling and analysis for supply chain coordination structure from the aspects of "information flow"and "cash flow" on the basis of three types of supply chain coordination structures. Besides, aiming at operation uncertainty of the supply chain system, the article established the operation entropy model of supply chain system based on Shannon entropy formula. Operation ordering of different supply chain coordination structures is analyzed. It is an important supplement since that there is less research of ordering of the supply chain from operation level before.For different supply chain "information flow" coordination structure, the structure entropy model was established in this paper, using Matlab software to simulate and analyze the model results, and draw the influence of the supply chain structure parameter on the degree of order. Finally, three different supply chain coordination structures were pair wise compared. In addition, this article analyzes the shortcomings of the existing system of absolute value of system degree of order to measure the degree of ordering of the system, and further put forward the concept of the level of the system degree of order, which is a more direct measure of degree of order of supply chain coordination structure, to make up for the inadequacies of previous. For different supply chain "cash flow" coordination structure, this paper established cost model based on the principal-agent, and the total costs of three kinds of coordination structures were compared. And a sensitivity analysis of model results is made to study the influence of model parameters on the total cost of the supply chain, thus identify the sensitive factors and non-sensitive factors.The results of this paper have practical significance and good value for the selection and optimization of supply chain structure, as well as follow-up similar studies. ?... |
