| Nowadays, economy develops quickly, and living standards improve rapidly in China, consumers’ quality needs of fresh produce are increasing and the contradiction between retailers and consumers becomes more and more obviously in agricultural market. How to make scientific preservation technology investment decision has become a key factor affecting the supply chain of the fresh produce. But in China, the agricultural market is immature and relevant restricting enterprises’ behavior policies are imperfect, so the members of the agricultural supply chain are lack of motivation to preserve the fresh produce. The quantitative analysis about how the preservation investment influences retailers’profits can stimulate the enterprises to invest preservation technology.On the basis of researches on perishable goods and fresh agricultural products, this thesis takes the present situation of fresh produce in China in consideration through using theoretical analysis, mathematical modeling and simulation method. This thesis includes three main parts as follows:Firstly, the preservation technology investment policy for fresh produce with freshness-dependent demand is studied. For the seasonal fresh produce, the price relies on the market, which implies the retailer can’t raise the price to compensate the preservation technology investment cost. So the consumers’ demand is associated with the freshness of the product only. So, considering the capital invested in preservation technology and the replenishment cycle as decision variables, this paper formulates a profit model under freshness-dependent demand, and figures out an optimal preservation technology investment and replenishment cycle strategy which can maximize the profit per unit time. Finally, we simulate the model with a numerical example in Matlab software and provide some corresponding suggestions for supermarkets.Secondly, the preservation technology investment policy for fresh produce with price-dependent demand is studied. The fresh produce is insufficient in the market, so the cost of preservation technology investment can be save by raising the product’s price. The price of the product is excessive with high operating costs such as purchasing price and transportation costs. So the consumers’demand is determined by the price. So we formulate a profit model under price-dependent demand, and figures out an optimal preservation technology investment and price strategy which can maximize the profit per unit time. Finally, we simulate the model with a numerical example and provide some suggestions for supermarkets.Thirdly, the preservation technology investment policy for fresh produce with freshness & price -dependent demand is studied. As to these fresh produce above, the price can be raise to compensate for its preservation costs, but the supermarket will lose price-sensitive consumers. So, we formulate a profit model under freshness & price-dependent demand, and figure out an optimal preservation technology investment and price strategy which can maximize the supermarket’s profit per unit time. Finally, a numerical example is given to analyze the influence of preservation technology investment and related parameters on and supermarket’s profits model.This result of this thesis provides an effective solution for the perseveration technology investment for the research on fresh produce. Meanwhile, it will do lots of efforts on making reasonable perseveration technology investment decision for the managers of the supermarkets, and has vital reference value on reducing the loss of agricultural products and ensuring the safety of fresh produce. |
