A Study On Supply Chain Decision And Monitoring And Controlling Based On Response Time

With the intensifying of market competition and the increasing of demand uncertainty, the success of an enterprise becomes more depend on the quick response to customer orders, and the competition between enterprises has changed from traditional competition based on variety, price or quality to Time-based competition (TBC). Especially in Customized Production (CP), customer demands are very sensitive to response time. At the same time, the change of market environment makes it difficult for an individual enterprise to survive; therefore, competition mode has shifted from the competition among enterprises to the competition among supply chains. To maintain the ability to compete, supply chain is required to reduce the cost of operation and improve service quality to customer. Under such circumstances, the study on the problem of supply chain decision and monitoring and controlling based on response time has great significance in both theory and practice to realize the effect of TBC strategy on the operation of supply chain, to find out the decision mode of response time and profit allocation mode that can make both the supply chain and individual enterprise realize the most benefit, to reduce response time effectively, and to improve the competitive ability of supply chain.This research investigates systematically the problem on supply chain decision and monitoring and controlling based on response time from the following four aspects, that is, supply chain reconstruction based on response time reduction, decision of response time, profit allocation of supply chain, monitoring and controlling of response time of supply chain. The methods of qualitative analysis and quantitative modeling are adopted in the whole process. The main content includes:(1) A study on modeling supply chain based on response time reduction.Firstly this research analyzes the problems and challenges that traditional supply chains are confronted with, and presents the reconstruction of supply chain to reduce response time so as to adapt to the market change. Then, through analyzing those factors that affect supply chain response time, several methods are put forward to shorten supply chain response time. At last Information Harmonized Supply Chain (IHSC) is modeled to realize the operation of supply chain based on response time.(2) Decision model of supply chain response time and decision analysis under time-sensitive demand. After exactly defining the supply chain response time, the decision-making process of response time is modeled. At first, the decision-making processes are analyzed separately in decentralized decision mode and centralized decision mode, and in a supply chain that is composed of a manufacturer and a distributor. Through optimal analyzing and comparing whole benefits of supply chain in that two decision models, the mode is found to achieve the most whole benefits. Then a sensitivity analysis upon influencing factors of supply chain response time is made, and the research of their effects on optimal decision result of supply chain is also conducted. Further more, several aspects are discussed, such as, the role of promised response time in the operation of supply chain, and response time decision under the circumstances of pricing based on response time.(3) Profit allocation model of supply chain and decision analysis based on response time. On the basis of defining profit allocation of supply chain, the study is conducted on the problem of supply chain profit allocation by means of modeling. The research is also made on the methods of profit allocation in three decision modes separately, and a numerical analysis combined with a real example is presented. Firstly both the double-marginal effect which occurs in supply chain and impact on the profit allocation proportion by various influencing factors in decentralized decision mode are analyzed. Then the constraints that the mechanism of profit allocation must meet in centralized decision mode are analyzed. At last, emphasis is put on the study of supply chain profit allocation in cooperative decision mode, and two feasible mechanisms of profit allocation are found.(4) The monitoring and controlling system of supply chain response time in time-based competition. Firstly the grey calamity prediction model of supply chain response time based on grey calamity theory is established. Then through applying theories of statistical process control and finite state machine, a real-time monitoring and controlling system of supply chain response time based on finite state machine is made. Lastly the theory of statistical control that is traditionally used in quality control is utilized in controlling response time in a creative way to get proper control limit and specification limit of response time and the right methods to put into effect. Thus we get a full-system and full-process monitoring and controlling system of supply chain response time by using three methods from three various aspects that is predictive control, real-time control and feedback control.The final chapter of the dissertation concludes the entire dissertation and describes the directions of the future research.