供应链网络研究的目的之一就是在整个供应链满足顾客一定产品需求量的条件下,达到供应链的总成本最小以及总收益最大。本文针对短生命周期乳制品具有多品种,不易保存等特点及其在配送运输过程中的特殊要求,研究了其供应链网络的相关成本与收益问题。在满足顾客一定产品需求量的前提下,建立了使得供应链的总成本与收益能够同时达到最优的双目标混合整数规划模型。其中,为了有效刻画产品在零售商处的实际库存水平,本文引入了一个新的非线性函数来定义产品的实时库存量。基于模型的结构特点,设计了一个新的增广ε-约束方法求解原模型。实证分析结果表明,所建立的模型不仅能够为供应链提供整体成本与收益最优的决策方案,而且所设计的方法要优于标准的ε-约束方法。相关研究成果对研究优化供应链成本与收益,以及提升顾客满意度等具有重要的潜在指导意义.
Compared with the developed countries, the cold chain logistics started relatively late in China. Nowadays, there still exists some problems in cold chain logistics in China. For instance, facilities are not complete, cold chain management is not perfect, cost is high, profits are low, and so on. Especially, the supply chain network of dairy products with short-life-cycle is a special class of cold chain logistics. Since the dairy products with short-life-cycle are perishable, we need not only to make sure of the quality of dairy products, but also to send them to the right place in the fastest way, in the shortest possible time. Meanwhile, the dairy products with short-life-cycle have some characteristics. For example, the customer demand is uncertain and difficult to predict, product variety, the small amount of product's order, etc. Thus, the requirements for dairy products supply chain network management are higher, and subsequently, the corresponding cost is relatively high.One of the goals of researches on supply chain network is to minimize the total cost and maximize the total revenue at the same time under the condition of the whole supply chain network satisfying the customers certain demand. In this paper, for short-life-cycle dairy products which have many varieties and are difficult to store as well as have some special requirements in the process of transportation, the related cost and revenue optimization problems for the four levels of dairy products supply chain network with "supplier-manufacture-distributioncenter-retailer" are studied. Under the condition of satisfying the customers demand for some products, a double-objective mixed-integer programming model is established, which can ensure that the cost and the revenue of the dairy products supply chain network could obtain the optimal value at the same time. Moreover, in order to describe the product's practical inventory for retailers effectively, a new nonlinear function is introduced in this paper to define the dairy product's inventory. By making use of the structure characteristics of the proposed model, a new augmented ε-constraint method is designed to solve the model. The empirical analysis results show that the proposed model could not only provide optimal decision-making scheme such that the cost and the revenue of the whole supply chain network could achieve the optimal value at the same time, also give the related optimal decision schemes for the products production, transportation and so on. Furthermore, the designed method is more promising than the standard ε-constraint method. The related research results have important potential guiding significance for studying how to optimize the cost and the revenue of supply chain and improve the customer's satisfaction, solving the general double-objective optimization problems and so on.
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