多晶硅光伏供应链的竞争、合作与协调

论文研究了多晶硅光伏供应链的竞争、合作与协调,研究结果表明:(1)PSM相互合作情形的利润高于PSM相互竞争的利润;(2)PM在PSM相互竞争情形下的利润高于在PSM相互合作情形下的利润;(3)供应链渠道在PSM相互竞争情形下的总利润高于在PSM相互合作情形下的总利润;(4)相比于竞争、合作情形,采取一种改进的收入分享契约协调机制可以有效地提高供应链渠道总体的利润,同时每个PSM以及PM的利润都有较大的提高。因此,建议多晶硅光伏供应链上游PM和下游PSM协同合作,建立上下游的利润分配协调机制,从而有效提高多晶硅光伏供应链整体的绩效。     

推荐系统对消费者网购支出的影响研究

推荐系统能在电子商务中利用信息过滤技术为消费者推荐感兴趣的商品和服务。本文通过收集大量消费者网购调查问卷,问卷的信度和效度均符合数据分析的要求。首先分析了消费者的产品偏好、忠诚度等网购行为与其年龄、性别、地域等个人属性的相互关系,之后运用倾向得分匹配法(Propensity Score Matching,PSM)研究推荐系统对消费者网购支出的影响,同时使用工具变量法((Instrumental Variable,IV)对PSM研究结果进行稳健性检验。结果显示使用推荐系统的消费者网购支出比未使用的消费者高出14.7%,网购支出与受教育程度和收入水平呈正相关、与年龄呈负相关,城市消费者和女性更愿意使用推荐系统;同时统计分析表明推荐效果受电子商务平台中社交关系、互补产品、店铺声誉等因素影响。研究结果对评估推荐系统的经济效益、增强消费者忠诚度和提高商家营销的精准性等方面起到了重要作用。     

Understanding Business Process Management: Implications for Theory and Practice

This paper presents an empirically validated framework of business process management (BPM) to enable the pursuit of BPM theory. Phase 1 of the research focused on the development of an initial framework of BPM, derived from a synthesis of current literature. This comprised five key themes, subsequently categorized as ‘application components’ of BPM. The empirical validation of the framework was approached through case‐based research, utilizing semi‐structured interviews with managers of a large financial services organization, to explore the dimensions of the framework. The results suggest that, in addition to confirming the five ‘application components’ of the initial framework, three additional ‘conceptual components’ are important. These concepts differentiate BPM from other process management activities, and suggest that developing a prerequisite ‘process mindset’ is a fundamental component of a BPM approach.     

基于异质性顾客心理期望等待时间的优先权服务定价研究

本文以非抢占式M/M/1排队系统为背景,以企业收益最大化为目标,基于顾客异质性(单位时间等待成本不同)将顾客分为两类,针对顾客的心理期望等待时间对服务提供商最优定价策略的影响进行研究。首先研究优先权顾客心理期望等待时间对企业收益的影响以及相应的优先权定价,然后研究优先权顾客和普通顾客同时存在心理期望等待时间对企业收益的影响和相应的优先权定价。研究表明:仅考虑优先权顾客的心理期望等待时间,企业应通过提高优先权定价来获得最优收益;当优先权顾客和普通顾客同时存在心理期望等待时间时,企业仍然采取提高优先权定价的策略,若普通顾客的价值大(获取服务的基本费用大),企业应对普通顾客提供一定的折扣来消除其心理期望等待时间增加企业收益;如果普通顾客的价值较小,企业应"有意"流失部分普通顾客,吸引更多顾客到优先权队列获取服务来获得更多收益。本文研究对于服务提供商在考虑顾客心理期望等待时间基础上设置最合理的队列机制有一定的指导意义和实际应用价值。     

A Framework for Estimating Benefits of Using Auctions in Revenue Management*

We develop a stochastic model to explore the benefits of incorporating auctions in revenue management. To the best of our knowledge the extant literature on modeling in revenue management has not considered auctions. We consider three models, namely, a traditional fixed price (non‐auction) model, a pure auction model, and a hybrid auction model and evaluate their revenue performance under a variety of conditions. The hybrid approach outperforms the other two in all 24 scenarios and yields an average revenue increase of 16.1% over the next best. A surprise finding is that there is no significant difference between the performance of the fixed price and pure auction approaches. A sensitivity analysis reveals that the relative superiority of the hybrid revenue management strategy is reasonably robust.     

The Impact of Transformational Leadership on Organizational Citizenship Behaviours: The Contingent Role of Public Service Motivation

In this paper we examine whether the relationship between transformational leadership and organizational citizenship behaviours (OCBs) is contingent on public service motivation (PSM). We propose that PSM may reduce the motivational influences of transformational leaders’ behaviours on followers’ OCBs in public sector organizations. Using a sample of Mexican employees we tested this proposition with structural equation modelling. Our results show that the motivational effects of transformational leadership were less for public sector followers higher in PSM than for those lower in PSM. A follow‐up study in private sector organizations did not reveal a similar interaction effect. These findings appear consistent with previous research demonstrating that PSM is more aligned to the goals and values of public rather than private sector organizations. Nevertheless, the direct effects of PSM on OCBs remained in the private sector.     

突发性产出下的供应链协调应对策略

针对突发事件影响制造商产出的情形，研究了收益共享契约协调应对突发产出事件的有效性问题。首先论证了无突发产出事件时收益共享契约协调供应链的有效性，进而分析了突发产出事件对供应链最优生产计划、定价决策、绩效和协调性的影响。然后，建立了突发产出事件下的收益共享契约协调应对模型，并对原收益共享契约和修正后的收益共享契约进行了对比分析。研究表明：当突发产出事件导致产出扰动范围较小时，供应链的最优生产计划、批发价格和零售价格几乎保持不变，仅当产出扰动范围较大时，三者才需要同时调整，此时原供应链的协调性也将被打破，而修正后的收益共享契约具有良好的抗突发性。最后，通过算例进行了验证。     

基于CAPM的BOT项目“有限追索权”融资决策模型

为研究BOT项目有限追索权融资中贷款资金与股本资金在贷方和项目公司之间合理分配问题(即BOT最优融资结构),本文考虑项目公司和贷方根据CAPM方法进行投资决策,通过分析它们投资策略在利益上的冲突关系而建立一个BOT融资模型,并且用博弈论方法研究模型最优解的存在性及其性质。研究结果不仅为项目公司和贷方提供了对BOT项目融资决策的理论方法,而且为政府对BOT项目的管理提供了重要的理论工具。     

Integration of business process management and knowledge management: state of the art,current research and future prospects

The integration of business process management (BPM) and knowledge management (KM) helps companies to improve temporal, qualitative and cost aspects of the provision of goods and services and to increase their innovative capacities. There are numerous publications in German and English that deal with the integration of both of these management approaches. By means of a comprehensive examination of this literature, the present article evaluates the state of knowledge and identifies additional research needs. More specifically, the volume of the publications examined is evaluated and classified by means of appropriate and carefully defined criteria. Moreover, the contents of the classes thus defined will be elucidated and then critically discussed. Finally, this article provides a general review of current approaches and their specific merits, and it will demonstrate the current deficits and spheres of activity in relation to the integration of BPM and KM.     

考虑旅客跨区间流转的机票多预定区间折扣优化模型研究

多预定区间差异化折扣逐渐成为机票收益管理的重要分支。本文提出了一种新的收益管理模型：基于顾客跨区间流转的收益管理模型,并给出了二分法迭代求解方法。假设各个预订时间区间的潜在需求可以通过大数据手段进行预测,首先结合旅客的价格敏感和潜在需求跨时间段流转的特性分析了各区间的需求函数,然后结合需求函数构建了多预定区间折扣优化模型。由于该模型属于动态的收益管理模型,因此构建了一种动态求解方法——二分迭代法。最后,依据航空公司的实际情况设计了两个仿真实验。实验计算结果不仅验证了新模型和算法的有效性,而且得出一些比较有用的结论：（1）票价与提前购票时间不存在单调的线性关系;（2）预订区间远离离港日折扣逐渐变大,靠近离港日的折扣会逐渐减少,但是包含离港日的预订区间的折扣又会变大;（3）流转率越高则折扣越少;（4）价格敏感系数越高折扣越高;（5）流转率通过改变价格敏感系数而影响折扣的大小。本文给出的折扣优化决策模型符合旅游产品多预定区间折扣决策的实践,可以为机票、酒店、景区等多种旅游产品的票价决策提供有益参考。     

易逝性高新技术产品在衰退期的收入管理问题

通过对处于衰退期的高新技术产品的分析,指出高新技术产品的易逝性现象,并将收入 管理原则运用于衰退期中高新技术产品的价格策略. 针对此类产品的易逝性和需求的随机 性,提出对价格和生产规模进行综合控制的数学模型并给出求解的方法. 算例表明,使用收入 管理方法可以显著提高销售收入,增加企业经济效益.     

The Impact of Contracts and Competition on Upstream Innovation in a Supply Chain

We consider a supply chain with an upstream supplier who invests in innovation and a downstream manufacturer who sells to consumers. We study the impact of supply chain contracts with endogenous upstream innovation, focusing on three different contract scenarios: (i) a wholesale price contract, (ii) a quality‐dependent wholesale price contract, and (iii) a revenue‐sharing contract. We confirm that the revenue‐sharing contract can coordinate supply chain decisions including the innovation investment, whereas the other two contracts may result in underinvestment in innovation. However, the downstream manufacturer does not always prefer the revenue‐sharing contract; the manufacturer's profit can be higher with a quality‐dependent wholesale price contract than with a revenue‐sharing contract, specifically when the upstream supplier's innovation cost is low. We then extend our model to incorporate upstream competition between suppliers. By inviting upstream competition, with the wholesale price contract, the manufacturer can increase his profit substantially. Furthermore, under upstream competition, the revenue‐sharing contract coordinates the supply chain, and results in an optimal contract form for the manufacturer when suppliers are symmetric. We also analyze the case of complementary components suppliers, and show that most of our results are robust.     

基于收益共享-双向期权契约的供应链金融风险控制研究

通过核心企业的信用水平为中小企业获取贷款提供担保,使得整个供应链有效运行是实施供应链金融的重要意义。本文考虑分销商(核心企业)-零售商(贷款企业)组成的二级供应链,为了降低银行面临的零售商违约风险,在银行监督下,分销商与零售商引入收益共享—双向期权契约。本文计算得到了零售商的违约概率,在此基础上,深入分析了各方期望收益、零售商最优初始订货量与最优期权购买数量、分销商最优收益共享比例、银行下侧风险规避前提下可参考的收益共享比例范围。并构造了数值算例,探讨了期权执行价格、收益共享比例及银行质押率等关键参数对风险控制方面的影响。本文所得结果能够为银行及企业在供应链金融决策方面提供参考。     

Competitive markdown timing for perishable and substitutable products

We model as a duopoly two firms selling their fixed stocks of two substitutable items over a selling season. Each firm starts with an initial price, and has the option to decrease the price once. The problem for each firm is to determine when to mark its price down in to maximize its revenue. We show that the existence and characterization of a pure-strategy equilibrium depend on the magnitude of the increase in the revenue rate of a firm when its competitor runs out of stock. When the increase is smaller than the change in the revenue rate of the price leader when both firms are in stock for all of the three possible scenarios, neither firm has the incentive to force its rival to run out of stock and if a firm marks its price down after the season starts, its inventory runs out precisely at the end of the season. When the increase is larger than the change of the price leader׳s revenue rate in one particular scenario, waiting until its rival runs out of inventory may be an equilibrium strategy for the larger firm even though this may lead to leftover inventory for itself. In other cases, there may be no pure-strategy equilibrium in the game. In certain regions of the parameter space, a firm׳s revenue may be decreasing in its starting inventory which shows that a firm may be better off if it can credibly salvage a portion of its inventory prior to the game. While most of our analysis is for open-loop strategies, in the final part of the paper, we show that the open-loop equilibrium survives as an equilibrium when we consider closed-loop strategies for an important subset of the parameter space.     

Do Teleworkers Possess Higher Levels of Public Service Motivation?

A survey conducted on U.S. federal government employees was analyzed, and the results indicate that federal workers who telecommuted frequently (i.e., those teleworking 4 to 5 days a week) reported higher levels of PSM than federal workers who did not telecommute frequently. The results also revealed that frequent teleworkers reported higher levels of PSM than employees teleworking less than 1 day a week and employees teleworking 1 day a week. However, frequent teleworkers were not found to report higher levels of PSM than employees teleworking 2 to 3 days a week.     

带佣金率和保留价的一级和二级价格拍卖

本文通过引入佣金率和保留价,分别讨论了一级和二级价格密封式拍卖,得到以下结论:(1)两种密封式拍卖的均衡报价随佣金率的提高而减少;(2)一级价格密封式拍卖的均衡报价随保留价的增加而增加,而二级价格密封式拍卖的均衡报价随保留价的增加而减少;(3)一级价格密封式拍卖的投标者预期收益与佣金率和保留价均呈反向变动,而二级价格密封式拍卖的投标者预期收益独立于佣金率和保留价;(4)收益等价定理仍然成立;(5)在两种密封式拍卖中,当佣金率增加时,卖方的预期收益减少,拍卖行的预期收益以及卖方和拍卖行的总预期收益可能增加也可能减少;(6)在两种密封式拍卖中,当保留价增加时,卖方的预期收益、拍卖行的预期收益以及卖方和拍卖行的总预期收益可能增加也可能减少;(7)给出了卖方的最优保留价的表达式;(8)把本文的结论与以前相应的研究工作做了比较。     

Restaurant Revenue Management at Chevys: Determining the Best Table Mix

Revenue management has been used in a variety of industries and generally takes the form of managing demand by manipulating length of customer usage and price. Supply mix is rarely considered, although it can have considerable impact on revenue. In this research, we focused on developing an optimal supply mix, specifically on determining the supply mix that would maximize revenue. We used data from a Chevys restaurant, part of a large chain of Mexican restaurants, in conjunction with a simulation model to evaluate and enumerate all possible supply (table) mixes. Compared to the restaurant's existing table mix, the optimal mix is capable of handling a 30% increase in customer volume without increasing waiting times beyond their original levels. While our study was in a restaurant context, the results of this research are applicable to other service businesses.     

Revenue Management vs. Newsvendor Decisions: Does Behavioral Response Mirror Normative Equivalence?

We study and compare decision‐making behavior under the newsvendor and the two‐class revenue management models, in an experimental setting. We observe that, under both problems, decision makers deviate significantly from normative benchmarks. Furthermore, revenue management decisions are consistently higher compared to the newsvendor order quantities. In the face of increasing demand variability, revenue managers increase allocations; this behavior is consistent with normative patterns when the ratio of the selling prices of the two customer segments is less than 1/2, but is its exact opposite when this ratio is greater than 1/2. Newsvendors' behavior with respect to changing demand variability, on the other hand, is consistent with normative trends. We also observe that losses due to leftovers weigh more in newsvendor decisions compared to the revenue management model; we argue that overage cost is more salient in the newsvendor problem because it is perceived as a direct loss, and propose this as the driver of the differences in behavior observed under the two problems.     

平台模式下农民合作社与供应链协调研究——以农户主导视角

针对众创平台模式下农民专业合作社与供应链协调问题。在农地流转背景下提出了一种农户主导供应链的多阶段斯坦科尔伯格博弈模型,设计了一种集中决策模式和四种分散决策模式,考虑了风险传递、决策优先权、边际成本和风险成本问题,构建了农场主、合作社、小农户和平台以农户数量（或合作比例）、土地流转收益、增产率和期望销售目标等共同影响的利润最大化模型,得到了最优土地流转收益和最大化利润所满足的方程;发现农户数量（或合作比例）、收益分配率、销售目标等因素都会对最优解产生影响。通过数值模拟,发现农场主（或合作社）优先权可以提高农场主（或合作社）利润;在一定条件下,合作社模式可以实现供应链协调;在农场主（或合作社）模式中平台和小农户利润通常是较低的;在供应链协调和小农户利润不降低的前提下,可以通过有效途径对平台利润差额进行补偿以保证合作社模式持续均衡。     

Ranked Items Auctions and Online Advertisement

We study auctions for a set of commonly‐ranked items where each buyer has unit demand. This setting has promising applications in areas such as keyword auctions in the search engine advertising industry, the sale of quality‐ranked raw materials, etc. An auction mechanism suitable for this setting is the simultaneous pooled auction (SPA), where each bidder simultaneously submits a single bid and is allocated an object based on the rank of his bid among all the bids. We study how to improve the seller's expected revenue by enforcing a reserve price in an SPA. We find that the use of an appropriate reserve price may significantly increase the seller's revenue, especially when the number of items for sale is relatively large compared to the number of participating bidders. One inherent problem in the SPA is that some bidders may incur ex post losses; that is, they pay more than what they value the received objects. We propose a tailored VCG mechanism that generates the same expected revenue as the SPA does, while bidders do not incur any ex post loss. We also discuss the potential applications of this research to keyword auctions.