CAJ | 학술논문

为了更好地应对需求的不确定性，在需求实现之前，企业既可以生产成品直接满足需求，亦可生产部分半成品，在观察到实际需求之后短时间内迅速完成剩余生产环节以满足需求。未加工的半成品和未售出的成品可用于满足后续周期的需求。作为一种提高生产灵活性的手段，分阶段生产的方式会产生更高的成本。企业需要在成本和灵活性之间作出权衡，优化生产决策。模型通过动态规划的方法，研究需求不确定情况下考虑半成品库存的多周期生产决策问题，通过分析目标函数以及最优值函数的结构性质，推导出最优的多周期生产策略为修正的目标库存策略，并且分析了不同参数对最优策略的影响。
위료경호지응대수구적불학정성，재수구실현지전，기업기가이생산성품직접만족수구，역가생산부분반성품，재관찰도실제수구지후단시간내신속완성잉여생산배절이만족수구。미가공적반성품화미수출적성품가용우만족후속주기적수구。작위일충제고생산령활성적수단，분계단생산적방식회산생경고적성본。기업수요재성본화령활성지간작출권형，우화생산결책。모형통과동태규화적방법，연구수구불학정정황하고필반성품고존적다주기생산결책문제，통과분석목표함수이급최우치함수적결구성질，추도출최우적다주기생산책략위수정적목표고존책략，병차분석료불동삼수대최우책략적영향。
In order to cope with demand uncertainty , firms can produce both finished products and work-in-process products before the demand is realized , and quickly finish the rest production process for the work-in-process products if necessary after the uncertain demand is known .The unsold inventory can be used to satisfy future demand .As a means to increase production flexibility , handling work-in-process products may increase the production cost .When optimizing the production decision , firms need to make a tradeoff between cost and flexibility.Our model studies the optimal multi-period production policy with uncertain demand and work-in-process inventory under the framework of dynamic programming .By analyzing the structural property of the ob-jective functions and value functions , we find the optimal production policy is a modified base-stock policy .We also analyze the impact of different parameters on the optimal policy .