Dynamic Pricing,Production, and Channel Coordination with Stochastic Learning

We consider a decentralized two‐period supply chain in which a manufacturer produces a product with benefits of cost learning, and sells it through a retailer facing a price‐dependent demand. The manufacturer's second‐period production cost declines linearly in the first‐period production, but with a random learning rate. The manufacturer may or may not have the inventory carryover option. We formulate the resulting problems as two‐period Stackelberg games and obtain their feedback equilibrium solutions explicitly. We then examine the impact of mean learning rate and learning rate variability on the pricing strategies of the channel members, on the manufacturer's production decisions, and on the retailer's procurement decisions. We show that as the mean learning rate or the learning rate variability increases, the traditional double marginalization problem becomes more severe, leading to greater efficiency loss in the channel. We obtain revenue sharing contracts that can coordinate the dynamic supply chain. In particular, when the manufacturer may hold inventory, we identify two major drivers for inventory carryover: market growth and learning rate variability. Finally, we demonstrate the robustness of our results by examining a model in which cost learning takes place continuously.     

公平偏好和销售努力下供应链期权契约协调

考虑公平中性的供应商将报童类商品售给公平偏好的零售商,商品需求随机且受销售努力影响。刻画了期权契约下零售商关于实物和期权商品采购及销售努力的联合策略,设计了协调供应链的期权契约和促销成本分担机制。研究表明：在确保零售商参与供应链下,无论契约参数如何设计,零售商要么仅采购实物商品,要么同时购买实物商品和期权;且仅当设计的契约能诱导零售商购买期权时,供应链的协调才可能实现。探讨了公平偏好对零售商策略和协调契约的影响,结果表明：零售商越偏好公平,实物商品采购量和努力水平越低,但期权购买量依赖于契约参数之间的关系;协调契约可行域随公平偏好程度递减,但始终存在;在协调契约下,零售商的策略选择与公平偏好程度无关。最后实施了数值分析。     

期权契约机制下应急物资储备模型研究

大规模突发灾害发生后,救灾所需物资种类繁多、数量暴增,为了满足受灾人群对应急物资的巨大需求,国家积极践行应急物资储备社会化,发挥社会企业及其资源在物资储备供应上的优势,构建起政府储备和企业储备相结合的应急物资保障机制。然而,现有绝大多数研究都是假设政府与一家企业签订应急物资代储协议,对于如何将更多的企业纳入国家应急物资保障体系的研究甚少,导致现有的研究成果缺少适用性和拓展性。基于此,本研究引入期权契约到政府和多个异质型企业组成的应急物资供应链系统,构建了政企合作模式下基于期权契约的应急物资储备模型,给出了协调应急物资供应链系统、改善供应链成员成本收益的条件,得到了协调企业利润分配的柔性机制。研究表明,一定条件下期权契约机制下的应急物资储备模型缓解了国家储备的压力,在保证企业利润得到改善的同时实现了企业利润的合理分配,极大地提高了政府应急物资保障能力,同时也为强化政企合作关系、落实应急物资储备社会化提供了理论支撑与针对性的管理策略。     

生产商规模不经济的双渠道供应链协调策略选择

供应链协调是提高供应链整体利润、改善供应链各方利益的根本手段.旨在探讨生产商具有生产规模不经济特性的双渠道供应链协调策略.给出了集中决策下双渠道供应链的市场价格与整体利润,以及分散决策下批发价契约与收益共享契约的设计方法.提出了协调度的概念,即契约使供应链协调的程度.证明了批发价契约的协调度小于1,不能实现供应链的协调;而收益共享契约的协调度等于1,但相对于批发价契约,收益共享契约不能同时改善零售商和生产商的利润,导致收益共享契约不可实施.为找到双渠道供应链可实施的协调策略,提出了带固定补偿的收益共享契约的设计方法和用纳什讨价还价协商模型确定固定补偿的方法.结果表明,该契约的协调度等于1,并且相对于批发价契约能同时改善零售商和生产商的利润.另外,研究还表明:生产不经济的弹性系数与销售价格成正比、与供应链的整体利润成反比,并且不同渠道间的竞争越激烈,双渠道供应链的销售价格和需求反而越高,双渠道供应链的总利润也越高,并且,带固定补偿的收益共享契约同样可以协调线性成本下的双渠道供应链.最后用算例验证了本文结论的正确性和有效性.     

Supply Chain Coordination in the Presence of Gray Markets and Strategic Consumers

The practice of diverting genuine products to unauthorized gray markets continues to challenge companies in various industries and creates intense competition for authorized channels. Recent industry surveys report that the abuse of channel incentives is a primary reason for the growth of gray market activities. Therefore, it is crucial that companies take the presence of gray markets into consideration when they design contracts to distribute products through authorized retailers. This issue has received little attention in the extensive literature on contracting and supply chain coordination. In this study, we analyze the impacts of gray markets on two classic contracts, wholesale price and quantity discount, in a supply chain with one manufacturer and one retailer when the retailer has the opportunity to sell to a domestic gray market. Our analysis provides interesting and counterintuitive results. First, a classic quantity‐discount contract that normally coordinates the supply chain can perform so poorly in the presence of a gray market that the supply chain would be better off using a wholesale price contract instead. Second, the presence of gray market can also degrade the performance of the wholesale price contract; therefore, a more sophisticated contract is needed for coordinating the supply chain. We show that contracts that solely depend on retailer's order quantity cannot coordinate the supply chain, and provide the conditions for coordinating the supply chain with price‐dependent quantity discount contracts. We also provide comparative statics and show that when there is a gray market, coordinating the supply chain enhances total consumer welfare.     

Incentive Schemes for Semiconductor Capacity Allocation: A Game Theoretic Analysis

We study incentive issues that arise in semiconductor capacity planning and allocation. Motivated by our experience at a major U. S. semiconductor manufacturer, we model the capacity‐allocation problem in a game‐theoretic setting as follows: each product manager (PM) is responsible for a certain product line, while privately owning demand information through regular interaction with the customers. Capacity‐allocation is carried out by the corporate headquarters (HQ), which allocates manufacturing capacity to product lines based on demand information reported by the PMs. We show that PMs have an incentive to manipulate demand information to increase their expected allocation, and that a carefully designed coordination mechanism is essential for HQ to implement the optimal allocation. To this end, we design an incentive scheme through bonus payments and participation charges that elicits private demand information from the PMs. We show that the mechanism achieves budget‐balance and voluntary‐participation requirements simultaneously. The results provide important insights into the treatment of misaligned incentives in the context of semiconductor capacity‐allocation.     

基于数量折扣的改良品供应链协调策略

本文以改良品供应链为研究对象,采用数量折扣作为激励机制,研究了一个供应商和一个零售商构成的改良品二级供应链在批量对批量供应模式假设下的协调问题,以达到协调改良品供应链的目的。通过算例分析,发现基于数量折扣的改良品供应链协调策略有效地实现了改良品供应链的协调。最后对改良品供应链的改良率和市场需求率进行了敏感性分析,研究了它们对供应链的影响。     

混合需求下考虑专利保护因素的闭环供应链定价与协调

在新产品需求为随机需求,再制造产品需求受销售价格影响的混合需求条件下,以博弈论为主要工具,研究了受专利保护的再制造闭环供应链的定价与协调问题,分析了集中决策和分散决策两种情形下的新产品最优订购量、废旧产品最优回收价格、最优专利许可费用、再制造品最优零售价格以及供应链的最优利润,并通过收益分享一费用分担契约对闭环供应链系统进行了协调,并通过数值算例验证了集中决策和分散决策情形下再制造成本节约对供应链成员的最优决策和利润的影响,以及收益分享.费用分担契约对闭环供应链的协调效果。研究表明再制造受专利保护的情况下,原制造商能通过专利许可费来影响第三方再制造商回收的废旧产品的回收价格和回收量,进而去影响原制造商和第三方再制造商的收益。     

风险厌恶零售商考虑信息预测成本的协调机制

在CVaR风险度量准则下,将信息预测成本作为运营成本之一,建立了风险厌恶的零售商的需求信息预测投入和订货量的联合决策随机模型,研究了风险态度对零售商最优决策的影响.通过分析得出在分散决策下,随着零售商风险厌恶程度的增加,零售商提高信息预测水平,以减小需求不确定风险.同时减少订货量,降低订货过量的风险.证明了在一定条件下,传统的收益共享契约能实现供应链协同,但适用范围较小.由信息预测成本分担与收益共享组成的联合契约可扩大供应链协同的范围,消除风险态度和双重边际对零售商决策行为的影响,使得零售商的需求预测水平和订货量同时达到系统风险中立环境下的最优水平.     

联合促销下双渠道VMI供应链的竞争与协调

本文在双渠道VMI供应链中,假设制造商和零售商分别处于领导者和追随者的地位,考虑了制造商通过联合促销协调供应链上下游的策略以及双渠道需求之间的搭便车效应,以此为背景建立了制造商和零售商之间的Stackelberg博弈模型,并通过拉格朗日乘数法求解出了制造商的最优发货策略和零售商的最优定价与促销策略。研究发现制造商开辟网上渠道直销产品后,零售商缺货时间比例增大。进一步研究发现,制造商承担促销成本的比例,双渠道之间的搭便车效应对供应链成员的决策和利润有显著影响。另外,双渠道的需求越不稳定,则制造商开辟网上销售渠道后获利越高,同时零售商的利润越低。最后,通过算例验证了模型的有效性并对模型中主要参数进行了灵敏度分析。