基于信任的供应预测信息共享策略

现实中供应不确定是比较普遍的现象，供应预测信息共享对改善供应链绩效起着重要作用。针对由一个制造商和一个零售商组成的单周期供应链，利用斯坦克尔伯格博弈方法研究信任对供应预测信息共享的影响以及回购契约对该供应链的协调作用。研究表明：零售商对制造商的信任影响供应预测信息共享效果，进而影响供应链绩效；制造商说谎的心理负效用系数越大，越倾向于说真话；回购契约可以促进制造商共享真实供应预测信息；当制造商说谎的心理负效用系数较大时，存在一个最佳的回购价格，使供应链实现完美协调。     

Supply chain integration framework using literature review

Definitions and measures of supply chain integration (SCI) are diverse. More empirical research, with clear definition and appropriate measures are needed. The purpose of this article is to identify dimensions and variables for SCI and develop an integrated framework to facilitate this. A literature review of the relevant academic papers in international journals in Logistics, Supply Chain Management and Operations Management for the period 1995–2009 has been undertaken. This study reveals that information integration, coordination and resource sharing and organisational relationship linkage are three major dimensions for SCI. The proposed framework helps integrate both upstream suppliers and downstream customers with the focal organisation. It also allows measuring SCI using both qualitative and quantitative approach. This study encourages researchers and practitioners to identify dimensions and variables for SCI and analyses how it affects the overall supply chain (SC) performance in terms of efficiency and responsiveness. Although there is extensive research in the area of SCI, a comprehensive and integrated approach is missing. This study bridges the gap by developing a framework for measuring SCI, which enables any organisation to identify critical success factors for integrating their SC, measures the degree of integration qualitatively and quantitatively and suggest improvement measures.     

信息共享与协同合作对两级供应链的收益影响

研究了由一个供应商和一个制造商组成的按订单生产的2级供应链系统。用数学的方法分析了信息共享与协同合作在供应商与制造商的不同策略组合下对该供应链收益的影响。通过具体算例对各种策略进行实验分析,并根据实验结果对信息共享与协调合作在各种策略中,对供应链各成员及整个供应链的收益影响进行评估。结果表明,供应链从传统模式转向完全信息共享与协同合作模式,制造商的订货次数、供应商的调整准备次数以及运输次数都大大减少,系统总成本降低了22.76%。信息共享能够降低成本,但主要收益来自系统的协调决策,而且这些收益并不是均匀地在各成员间进行分配的,而是随策略的不同而不同。     

The Impact of Information Sharing on Supply Chain Performance under Asymmetric Information

The use of screening contracts is a common approach to solve supply chain coordination problems under asymmetric information. One main assumption in this context is that managers without specific incentives would rather use their private information strategically than reveal it truthfully. This harms supply chain performance. This study investigates the impact of information sharing in a principal‐agent setting that is typical for many supply chain transactions. We conduct a laboratory experiment to test whether information sharing has an influence on supply chain coordination. We find that information sharing within the supply chain has two positive effects. First, information sharing reduces the inefficiencies resulting from information deficits if there is a certain amount of trust in the supply chain. Second, communication can limit out‐of‐equilibrium behavior with a small impact on the firm's own payoff, but a large impact on the supply chain partner. Furthermore, we find that both effects are amplified when communication takes place in an environment that allows the less informed supply chain party to punish or to reward the better informed party. Although our extended mechanisms substantially enhance the poor performance of the theoretically optimal coordination contract menu, we find no mechanism that implements supply chain performance superior to the theoretically predicted second‐best level.     

绿色供应链中不对称需求预测下的信息共享研究

研究了由一个制造商和一个零售商组成的绿色供应链和他们的需求预测信息共享问题。考虑了两种方案：订货型生产方案和库存型生产方案，两种方案下分别考虑了无信息共享和信息共享两种情况。分析了预测信息对两种方案下制造商利润、零售商利润和信息共享价值的影响，同时研究了绿色成本系数对信息共享的影响。研究表明，两种方案中制造商始终能从信息共享中获利，而零售商只有在制造商绿色成本系数较低时才会自愿共享预测信息。当绿色成本系数较高时，制造商可以通过一个讨价还价合同，促进零售商进行信息共享。当绿色成本系数很高时，供应链成员之间不存在信息共享。此外，库存型生产方案中信息共享带来的总收益增量要高于订货型生产方案，因此，库存型生产方案中参与者信息共享的可能性要高于订货型生产方案。     

基于SaaS模式的服务供应链协调研究

免费试用是SaaS(软件即服务)模式市场推广的主要方式,本文研究了服务需求由服务的免费试用决定的SaaS服务供应链中AIP(应用基础设施提供商)与ASP(应用服务提供商)间的协调问题。在信息对称下,以成本共担契约激励ASP提高免费试用的努力水平;在信息不对称的情况下,AIP采用服务能力预定策略避免低技术能力ASP的机会主义行为,通过成本与风险共担的组合契约激励ASP提高免费试用的努力水平和提高服务能力订购量。研究结果表明:提出的协调契约能够使免费试用的效果达到整体最优,实现SaaS服务供应链的最优绩效并使各参与方利润帕累托改进;提高ASP的技术能力可使免费试用取得更好的效果。通过数值模拟验证了模型的有效性并得出了其管理学意义。     

风险规避型供应链的收益共享机制研究

探讨了由风险规避型零售商与风险规避型供应商组成的两级供应链协作激励问题.首先研究了Stackelberg主从对策模型下风险规避型零售商与风险规避型供应商的决策行为,并分析了双方的风险规避系数对双方决策行为的影响.然后,研究了垂直一体化模型下风险规避型供应链的决策行为,同样分析了双方风险规避系数对供应链决策行为的影响程度.最后,提出采用收益共享契约机制来协调该供应链.并通过数值实验进一步分析供应商与零售商的风险规避系数对双方的决策行为及收益共享系数的影响程度.     

伴随销售商促销努力的供应链契约设计

在大多数供应链契约文献中,市场需求被假设为了一个独立的外生随机变量.但实际情况中,市场需求往往受到销售商各种促销活动的影响.文中首先分析了在市场需求受促销活动影响情况下的集中控制模式及不合作模式的销售商最优促销努力水平和最优订购数量的决策问题;然后设计了基于回购契约的促销成本分担契约协调机制;最后通过一个算例比较了在不采取任何促销活动、不合作情况下销售商单方进行促销活动以及协调机制下销售商进行促销活动三种策略下的供应链绩效水平.     

具有风险规避销售商的供应链最优回购契约

在销售商风险规避下,运用CVaR方法研究了供应商在直营渠道（集中式供应链）和非直营渠道（分散式供应链）下回购契约的设计问题。刻画了集中式供应链下回购契约完成渠道协调的充要条件,求解了分散式供应链的最优回购契约。比较分析了集中式和分散式供应链下回购契约的差异,得到以下结论：相对于集中式供应链,供应商在分散式供应链中趋向于设定更高的批发价格,或更低的回购价格。讨论了销售商的风险规避度对契约设计和供应商收益的影响,研究表明：销售商越规避风险,供应商的收益越低。最后提供一个案例讨论了模型在现实中的应用。     

零售商的资金约束对协调契约的影响分析

在零售商促销下,探讨了零售商的资金约束对使用收益共享契约和回购契约协调供应链的影响。分析了零售商拥有不同运营资金下供应链的契约协调问题,研究表明：在运营资金相对充裕下,收益共享契约不仅能协调供应链,且能实现渠道收益的任意分配,但回购契约不能实现渠道收益的任意分配,除非运营资金非常充裕;在运营资金不足下,收益共享契约仍有可能协调供应链,但回购契约不能协调供应链。讨论了资金的时间价值对两个契约协调供应链的影响,结果表明：在回购契约下,资金利率越大,具有资金约束零售商的供应链被协调的可能性越大,但资金利率对收益共享契约没有影响。最后提供了数值分析。研究中得到一些管理启示,可为资金约束供应链的协调管理提供理论借鉴。     

Coordinating a supply chain for deteriorating items with a revenue sharing and cooperative investment contract

In this study, a one-manufacturer–one-retailer supply chain model for deteriorating items with controllable deterioration rate and price-dependent demand is developed, in which both players cooperatively invest in preservation technology to reduce deterioration. Algorithms are designed to obtain the pricing and preservation technology investment strategies in both integrated and decentralized scenarios. It is shown that cooperative investment strategy benefits the manufacturer but damages the profits of the retailer and the whole supply chain. A revenue sharing and cooperative investment contract, which combines revenue sharing and cost sharing mechanisms, is thus designed to coordinate the supply chain. Numerical simulations and sensitivity analysis of the equilibrium strategies and coordinating results on key system parameters are given to verify the effectiveness of the contract, and meanwhile get some managerial insights. The results show that only when the revenue sharing rate lies roughly between 1/2 and 3/4 can the contract perfectly coordinate the supply chain in most cases, which has an important guiding significance for the supply chain coordination of deteriorating items when considering preservation technology investment.     

有限需求信息下基于回购契约的供应链鲁棒协调策略

研究了仅知需求均值和区间信息条件下,基于最小最大后悔值准则的供应链回购契约协调问题。针对未知需求具体分布形式的两级供应链系统,在回购契约框架下,建立了以鲁棒决策和最优决策下的供应链及其成员绩效之差为目标函数的供应链协调模型。在仅知需求区间和均值信息条件下,采用鲁棒优化方法求解了最小最大后悔值准则下的集成供应链鲁棒订货策略和分散供应链鲁棒契约协调策略及其绩效偏差。分析了不同服务水平和契约参数条件下,由于信息缺失而未能实现最优运作的供应链及其成员绩效损失情况。最后,进行了数值计算,验证了通过鲁棒优化方法得到的供应链回购契约协调策略的鲁棒性和有效性。结果表明,基于回购契约的供应链鲁棒协调策略能够有效抑制需求不确定性对系统及其成员运作绩效的影响,同仅知需求区间信息相比,额外获得需求均值信息能够有效改进供应链运作绩效。     

考虑产品绿色度的绿色供应链博弈模型及收益共享契约

本文以一个制造商和一个零售商组成的二级绿色供应链为背景,建立了考虑产品绿色度的四种绿色供应链博弈模型:以制造商为主导的Stackelberg博弈模型、以零售商为主导的Stackelberg博弈模型、制造商和零售商的Nash均衡博弈模型以及集中控制模型。对四种博弈模型在产品绿色度、产品价格以及批发价格等方面进行了比较分析,并进一步建立了收益共享契约下的博弈模型。通过数值仿真探讨了收益共享系数对产品绿色度、制造商利润和零售商利润的影响。     

RFID技术压缩提前期对供应链收益的影响与协调

RFID技术能够压缩供应链的提前期,提高零售商的服务水平,同时也会增加供应链的成本,如何协调采用RFID技术后供应链成员的收益是迫切需要解决的问题。本文针对单供应商和单零售商的两级供应链,考虑提前期变化对供应链及其成员收益的影响,在假定RFID单位标签成本为一定值的情况下,研究了采用RFID技术前后分散式供应链和集中式供应链的收益,并探讨了契约参数的变化对供应链协调的影响。结果表明,收益共享契约能有效地协调采用RFID技术后的供应链,实现供应链成员的共赢,但是采用RFID技术后,能够协调供应链的契约参数的区间缩小,零售商的最优订货量减少,供应商的批发价格上升。最后得出供应链采用RFID技术后提前期压缩量的阈值,通过数值分析对结论进行了验证,该研究为供应链企业采用RFID技术提供了相应的管理启示。     

供应链协同与信息共享的关联研究

将协同分成管理协同、技术协同与人机协同3类。据此定义了供应链协同,分析了信息共享在不同条件下存在的价值差异,探讨了供应链协同与信息共享的内在关联。研究结果表明,信息共享是供应链协同实现的必要但不充分条件。在某些条件下,信息共享并不能解决供应链中的协同问题,相反还可能增大协同工作量。要避免这种情况发生,提前进行合理的信息共享设计是必须的。     

新鲜度信息不对称下生鲜农产品供应链协调

生鲜农产品供应链上下游存在新鲜度信息的不对称性,加剧了耗损。为此,迫切需要研究生产商隐瞒新鲜度信息的生鲜农产品供应链协调。基于Stackelberg博弈,使用单周期报童模型分别构建生产商和零售商的利润函数,分析供应链性质;并提出具体的回购契约形式进行供应链协调。研究认为：一般的批发价格契约下,即使生产商隐瞒农产品新鲜度信息,也不一定损害供应链总收益;回购契约可以保证新鲜度信息共享并协调供应链。最后,通过数值算例验证分析结论的有效性。     

Explaining Anomalous High Performance in a Health Care Supply Chain*

An implicit assumption in distributing and coordinating work among independent organizations in a supply chain is that a focal organization can use financial or contractual mechanisms to enforce compliance among the other organizations in meeting desired performance objectives. Absent contractual agreement or financial gain, there is little incentive for independent organizations to coordinate their process improvement activities. In this study, we examine a health care supply chain in which the work is distributed among independent organizations. We use a detailed case study and an abductive reasoning approach to understand how and why the independent organizations choose to coordinate and collaborate in their work. Our study makes two contributions to the literature. First, we use well‐established lean principles to explain how independent organizations achieve superior performance despite highly uncertain and variable customer demand—a context considerably different from the origins of lean principles. Second, we forward relational coordination theory to explain why the organizations in this decentralized supply chain coordinate their work. Relational coordination includes the use of shared goals, shared knowledge, and mutual respect for one another's work as primary mechanisms to explain process improvement in the absence of any contractual incentives. Our study constitutes a first step in generating theory for work design and its improvement in decentralized supply chains.     

Sharing shipment quantity information in the supply chain

This paper evaluates the benefit of a strategy of sharing shipment information, where one stage in a supply chain shares shipment quantity information with its immediate downstream customers—a practice also known as advanced shipping notice. Under a periodic review inventory policy, one supply-chain member places an order on its supplier every period. However, due to supplier's imperfect service, the supplier cannot always exactly satisfy what the customer orders on time. In particular, shipment quantities arriving at the customer, after a given lead-time, may be less (possibly more) than what the customer expects—we define this phenomenon as shipment quantity uncertainty. Where shipment quantity information is not shared with customers, the only way to respond is through safety stock. However, if the supplier shares such information, i.e. customers are informed every period of the shipment quantity dispatched, the customer may have enough time to adapt and resolve this uncertainty by adjusting its future order decisions. Our results indicate that in most circumstances this strategy, enabled by information technologies, helps supply-chain members resolve shipment quantity uncertainty well. This study provides an approach to quantify the value of shared shipment information and to help supply-chain members evaluate the cost-benefit trade-off during information system construction. Numerical examples are provided to indicate the impact of demand/shipment parameters on strategy implementation. While previous studies mainly focus on the information receiver's perspective, we evaluate a more general three-tier linear supply chain model via simulation, studying how this strategy affects the whole supply chain: the information sender, the information receiver and the subsequent downstream tier.     

供应链伙伴信息共享的博弈与激励

针对产销双方对供求信息掌握的不对称性,分析了实现供应链合作伙伴信息共享的条件,从保证供应链合作伙伴信息共享的实现出发,建立了信息共享的博弈模型,分析了共享需求信息和成本信息前后期望利润变化,提出了在制造商与分销商信息共享的激励机制。通过激励机制,改变Nash均衡解的利润分配,在价格优惠和一次性补贴下,使供应链伙伴均获得信息共享带来的收益增加。     

Coordinating a Semi‐Centralized Global Production Network Through Different Levels of Headquarters Involvement

Motivated by our experience with a global company, we propose and study the concept of a semi‐centralized supply chain and analyze its coordination issues. We focus on a supply chain consisting of a home plant and a foreign branch, both of which are under the same parent company but have considerable autonomy. The role of the home plant is to provide a key component to the foreign branch with guaranteed service (required by the headquarters). Because of a high fixed order cost, the branch orders the component rather infrequently, causing high expediting costs at the home plant. Our purpose is to help the headquarters to improve the supply chain efficiency. We show that under certain conditions, the headquarters can coordinate the supply chain by setting an upper bound on the expediting frequency. If these conditions fail to hold, a simple fixed cost‐sharing contract coordinates the supply chain. When centralized control is too costly or infeasible, the headquarters may delegate the contract design rights to the subunits. If the home plant receives the rights, the supply chain performance can be significantly improved (sometimes to near optimality). These results provide guidance to the headquarters on whether, when, and to whom to delegate the coordination initiatives.