考虑商品新鲜度与量变损耗的三级冷链库存优化模型

生鲜农产品在实际流通中存在质量与数量的“双重损耗”，为了进一步研究生鲜农产品“双重损耗”对供应链库存决策的影响，将保鲜投入引入冷链运作，建立相应的新鲜度与量变损耗函数，以供应链整体利润最大为目标，构建需求受新鲜度影响的三级冷链库存优化模型，运用遗传算法求解最佳的库存策略。最后，通过对相关因素的灵敏度分析发现，顾客对商品新鲜度的敏感性越高，越有助于系统利润的增加，且DC处保鲜投入费用的变化对系统利润波动的影响最小。

A Three-Stage Cold Chain Inventory Optimization Model Considering Freshness and Quantity Loss of Goods

There is a loss of both quality and quantity in the circulation of fresh agricultural products.In order to further study the effect of the"double loss"on supply chain inventory decision,fresh preservation is introduced into cold chain operation,and a corresponding freshness and quantity loss function is established.Besides,a three-stage cold chain inventory model with the objective of maximizing the system profit is proposed,in which demand is dependent on the freshness of products.Moreover,the genetic algorithm is utilized to solve the optimal inventory strategy.A sensitivity analysis of relevant factors indicates that as the sensitivity of customers to the freshness of goods increases,system profit increases.In addition,the variation in the cost of fresh preservation at DC has the least effect on the fluctuation of system profit.