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华中生, 孙毅彪, 李四杰
管理科学学报,2004,7(5):40~48,-0001,():
-1年11月30日
合作是提高供应链竞争力的途径,也是增强供应链企业抵御经营风险的重要手段。研究了由一个生产商和一个零售商组成的两层供应链,用变异系数(需求的均方差与其均值之比)描述单周期产品市场需求的不确定性。研究发现在一定的市场需求不确定性条件下,生产商与零售商才存在合作博弃均衡;通过市场需求不确定性的变化对合作均衡与合作效果影响的数值分析,及其与非合作情形的对比,结果说明在给定的零售价格水平下,合作具有改善供应链企业应对市场需求不确定性变化和规避经营风险的能力。
供应链, 单周期产品, 需求不确定, 合作博弈
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华中生, 徐晓燕, 石琴
中国科学技术大学学报,2000,30(1):99~107 ,-0001,():
-1年11月30日
以印刷电路板的制造过程为背景,总结了柔性制造/装配系统各种柔性的定义。基于柔性制造系统的柔性既取决于设备本身的性能,也取决于对驱动柔性制造/装配系统自动化运行的指令的认识,提出了柔性与大M制造各个过程的决策问题的关系框架。还提出一种新的部分柔性制造系统生产能力规划与生产线设计的模型,并分析探讨了决策问题的求解方法。
柔性制造系统, 柔性, 决策模型, 大M制造, 启发式算法
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华中生, 梁梁, 徐晓燕
自动化学报,2002,28(4):658~662,-0001,():
-1年11月30日
混流生产线,, 排产,, 整数规划,, 遗传算法
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【期刊论文】Aggregate line capacity design for PWB assembly systems
华中生, ZHONGSHENG HUA † and PRASHANT BANERJEE ‡, *
INT. J. PROD. RES., 2000, VOL. 38, NO.11, 2417-2441,-0001,():
-1年11月30日
In a multi-product, flexible manufacturing environment, line capacity of printed wiring board (PWB) assembly systems may need to be adjusted at the beginning of each aggregate planning period because of demand fluctuation over multiple periods. A model of production planning and equipment changeover scheduling at the aggregate level is developed. In the described model, three kinds of equipment changeover methods, i.e. adding machine, removing machine and transferring machine, are involved. Because the model is a large-scale integer programming problem, it cannot be solved directly. A solution approach is developed, which first solves a recursive linear programming problem to obtain a rough set of machines to be added and a rough set of machines to be removed for each machine line in each period, then applies a branch and bound heuristic to the rough sets to obtain near-optimal solutions to the equipment changeover scheduling problem. Computational studies show the financial benefit both on capital cost and equipment changeover costs.
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【期刊论文】Impact of demand uncertainty on supply chain cooperation of single-period products
华中生, Zhongsheng Hua *, Sijie Li, Liang Liang
Int. J. Production Economics ▌(▌▌▌▌) ▌▌▌-▌▌▌,-0001,():
-1年11月30日
Cooperation is an approach of improving competitive advantages of a supply chain. A two-echelon supply chain consisting of a manufacturer and a retailer for a single-period product is studied, and retail-market demand uncertainty is described by coefficient of variation. We develop a cooperation mechanism to address the cooperation and its implementation between the manufacturer and the retailer, two market situations are considered: (i) the wholesale price and the order quantity are decision variables, (ii) the wholesale and the retail prices as well as the order quantity are decision variables. In both market situations, our research shows that: (1) the cooperation mechanism can improve the overall channel profits and the supply chain members' allocated profits, (2) the described cooperation is conditional on retail-market demand uncertainty: it can be implemented if, and only if, the fluctuation of retail-market demand is relatively small and coefficient of variation of retail-market demand does not exceed an upper bound. Impacts of retailmarket demand uncertainty on wholesale price, order quantity and/or retail price have also been investigated through analytical and numerical analyses. Although our research is based on the assumption that the manufacturer dominates the supply chain in the non-cooperative situation, which is not the case for most retailer-driven supply chains, this research is still significant on providing guidelines for practitioners in current China mid-level car market that is similar to situations described in the paper.
Supply chain, Newsvendor problem, Demand uncertainty, Cooperation
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