基于NASH谈判模型的上下游企业R&D合作与协调机制研究

已有研究往往孤立地分析企业横向或纵向R&D合作问题,而现实中,企业有可能同时采用两种合作形式进行技术创新。针对这一现象,建立了上下游企业同时进行横向与纵向R&D合作的博弈模型,并与下游企业只选择横向R&D合作的情形进行了比较。研究发现:(1)与下游企业只进行横向R&D合作的情形相比,同时进行横向与纵向R&D合作将带来更高的均衡产量、R&D投入水平和行业利润;(2)当R&D成本分担比例较低(较高)时,上游企业具有(缺乏)R&D合作动机,该结果与技术溢出水平高低无关;(3)当上游企业R&D成本分担比例较高或技术溢出水平较低时,下游企业必然同时选择与上游企业R&D合作。为保持合作的稳定性,通过构建基于满意度的NASH谈判模型,设计了上下游企业R&D合作的利益协调机制。算例表明,该协调机制能避免传统R&D成本分担法引起的合作冲突。     

Adverse Selection in Competitive Search Equilibrium

We study economies with adverse selection, plus the frictions in competitive search theory. With competitive search, principals post terms of trade (contracts), then agents choose where to apply, and they match bilaterally. Search allows us to analyze the effects of private information on both the intensive and extensive margins (the terms and probability of trade). There always exists a separating equilibrium where each type applies to a different contract. The equilibrium is unique in terms of payoffs. It is not generally efficient. We provide an algorithm for constructing equilibrium. Three applications illustrate the usefulness of the approach, and contrast our results with those in standard contract and search theory.     

BIDDING FOR HORIZONTAL MULTINATIONALS

We present a model in which governments bid for firms by taxing/subsidizing setup costs. Firms choose both the number and the location of the plants they operate, and the equilibrium industry structure is affected by governments' subsidy choices. We show that the endogenous presence of horizontal multinationals attenuates the race to the bottom and yields some results that run counter to traditional findings in the literature. First, in the presence of multinationals, increasing subsidies decrease firms' profits by exacerbating price competition due to more firms going multinational. Second, instead of being always subsidized, firms may actually be taxed in equilibrium. Last, subsidies may become strategically independent policy instruments, instead of being strategic complements. (JEL: F12, F23, H27, H73, R12)     

水平差异产品的内生定价策略选择

本文分析了一个存在定价策略选择下的三阶段Hotelling双头垄断模型,其中厂商可以选择采用单一定价策略或者歧视定价策略。模型的子博弈精炼纳什均衡表明厂商或者同时采用单一定价策略,或者同时采用歧视一价策略。当歧视定价的边际成本相对单一定价的边际成本不太高,或者消费乾注重产品特性差异时,厂商会同时选择歧视定价策略,尽管单一定价下厂商的利润要明显高于歧视定价下的利润;当歧视定价的边际成本相对较高或者消费者不太注重产品特性差异时,单一定价将成为厂商的最优选择。最后本文从社会最优的角度分析比较了两种这价策略下的社会净福利水平。     

具有网络外部性的扩展Hotelling模型

将网络外部性引入线性运输成本下的Hotelling模型,研究了两家网络产品厂商首先选址,然后进行价格竞争的两阶段完全信息动态博弈问题,得到了厂商价格竞争均衡的存在性条件,推广了一般Hotelling模型的结论.由于网络外部性的存在,消费者效用是相互依赖的.网络产品的市场份额既是消费者选择的结果,又是消费者选择的依据.文章将交通流量分配技术和无穷维变分方法相结合,建立了刻画网络产品市场划分的模型——无穷维变分不等式,并研究了市场划分的存在性和唯一性问题.最后假定厂商定位在两端,分析了产品的网络外部性特征及单位运输成本对两个厂商竞争均衡情况的影响.     

Clubs and the Market

This paper defines a general equilibrium model with exchange and club formation. Agents trade multiple private goods widely in the market, can belong to several clubs, and care about the characteristics of the other members of their clubs. The space of agents is a continuum, but clubs are finite. It is shown that (i) competitive equilibria exist, and (ii) the core coincides with the set of equilibrium states. The central subtlety is in modeling club memberships and expressing the notion that membership choices are consistent across the population.     

The Effect of Competition on the Efficient–Responsive Choice

In determining their operations strategy, a firm chooses whether to be responsive or efficient. For firms competing in a market with uncertain demand and varying intensity of substitutability for the competitor's product, we characterize the responsive or efficient choice in equilibrium. To focus first on the competitive implications, we study a model where a firm can choose to be responsive at no additional fixed or marginal cost. We find that competing firms will choose the same configuration (responsive or efficient), and responsiveness tends to be favorable when demand uncertainty is high or when product competition is not too strong. Intense competition can drive firms to choose to be efficient rather than responsive even when there is no additional cost of being responsive. In such a case, both firms would be better off by choosing to be responsive but cannot credibly commit. We extend the basic model to study the impact of endogenized production timing, multiple productions and product holdback (or, equivalently, postponed production). For all these settings, we find structurally similar results; firms choose the same configuration, and the firms may miss Pareto‐improvements. Furthermore, through extensions to the basic model, we find that greater operational flexibility can make responsiveness look less attractive in the presence of product competition. In contrast to our basic model and other extensions, we find it is possible for one firm to be responsive while the other is efficient when there is either a fixed cost or variable cost premium associated with responsive delivery.     

INFORMATION GATHERING IN ORGANIZATIONS: EQUILIBRIUM,WELFARE, AND OPTIMAL NETWORK STRUCTURE

We model an organization as a game in which all agents share a common decision problem and some level of coordination is necessary between individual actions. Agents have individual private information concerning the task they have to perform, and they share this private information through pairwise channels of communication. We analyze how this communication pattern, modeled by means of a network structure, affects individual behavior and aggregate welfare. In the unique equilibrium of this Bayesian game, each agent's optimal action depends on a properly defined knowledge index that measures how the aggregation of information helps him to infer higher‐order beliefs about other's information after communication. Adding communication channels is not always beneficial for the organization because it can lead to mis‐coordination. We single out the geometry of interagent communication links that the manager could implement in order to improve the organization's performance.     

Why Do We Observe Stockless Operations on the Internet? Stockless Operations Under Competition

Due to the proliferation of electronic commerce and the development of Internet technologies, many firms have considered new pricing‐inventory models. In this paper, we study the role of stockless (i.e., zero‐inventory) operations in online retailing by a considering duopoly competition in which two retailers compete to maximize profit by jointly optimizing their pricing and inventory decisions. In our model, the retailers are allowed to choose either an in‐stock policy or stockless operations with a discounted price. We first present the characteristics and properties of the equilibrium. We then demonstrate that the traditional outcome of asymmetric Bertrand competition is observed under head‐to‐head competition. However, when the two firms choose different operational policies, with corresponding optimal pricing, they can share the market under certain conditions. Finally, we report interesting observations on the interaction between pricing and inventory decisions obtained from an extensive computational study.     

Crime,Search, and Ex‐offenders’ Accessibility to Labor Markets

Rehabilitation for ex‐offenders has positive (e.g. more production) and negative (e.g. more crime) effects on society. We investigate the effect of rehabilitation on criminal behavior and the labor market using a search model. In the case where ex‐offenders cannot join the labor market, promoting rehabilitation for them may reduce crime. In such a case, the equilibrium allocation may be inefficient. Moreover, under the Hosios condition, equilibrium labor market tightness is lower than the efficient outcome because of crime, as the crime option raises the value of unemployed workers. Because this option works as a negative externality on matched firms, equilibrium tightness is lower than the optimal level.     

竞争环境下新创企业产量柔性技术战略决策研究

考虑新创企业与成熟企业相互竞争,重点研究竞争环境下,两企业的产量柔性技术选择及产能投资决策。首先分析了四种不同策略组合下两企业的最优产能决策、新创企业的最大生存概率以及成熟企业的最大利润;然后用传统博弈论的方法得出了二者的竞争均衡,并分析影响两企业产量柔性战略决策的因素;最后用数值实验进行验证。研究结果表明：在竞争中,新创企业更加关注成本因素,倾向于选择成本较小的无柔性技术;成熟企业对市场需求的波动更为敏感,当市场需求波动较大时,选择产量柔性技术能提高其收益;当产量柔性技术单位产量调整成本较大时,选择无柔性技术对两企业更为有利。     

消费者寻求多样化与厂商折扣定价竞争

在很多市场环境中，消费者喜欢尝试不同产品的特性，重复消费同一商品会产生滞留成本。本文通过构建两期动态博弈模型，研究了滞留成本对企业折扣券定价行为的影响，并与其他定价策略的市场绩效进行了比较。本文研究结果表明：（1）企业会通过折扣券奖励忠诚的消费者，即企业会对重复购买自己产品的消费者给予价格优惠，而对新消费者制定高价格；（2）在均衡中，随着滞留成本的提升，消费者剩余和社会总福利降低，企业利润上升；（3）与其他定价机制相比较，折扣券定价策略下的社会总福利较低，政策制定者应当限制此类策略的应用。     

The Phenomenology of Earnings Management within the Confines of Agency Theory

Agents' selective and acceptable reporting of economic events by different accounting systems, compounded by alternative accounting methods and estimates, make financial statements an approximation of economic reality. The tendency to delay accounting recognition of some transactions suggests that financial statements lag behind reality. The difference between reality and imaginary is often referred to as the agency problem. An essential characteristic of this problem is risk attitudes of principals (shareholders) and agents (management). Shareholders are considered risk neutral in their preferences for individual firms. They are in a position to diversify their shareholdings across multiple firms. Agents on the other hand have security and income that are inextricably linked to one firm. It would not be surprising to find agents exhibiting risk aversion in decisions regarding the firm. Immediately one's attention is drawn to the opportunity costs that arise for the risk-neutral shareholders who prefer that agents maximize their returns. The risk differential between agents and principals creates a problem in principal-agent relationship. It is within this framework that supervisory and incentive alignment mechanisms that alter the risk orientation of agents are set up. Powerful incentives act upon agents as they exercise their judgment, particularly when the judgment can trigger a stock market response that will, in turn, affect the firm in numerous ways. The responsibility of agents is to manage earnings. From a principal's perspective not all of the methods used to achieve this goal are equally desirable. Agents can either increase productivity or they can strategically manipulate accounting choices to affect earnings. The latter method need not come with any associated changes in productivity. Consequently, there is misstatement of the financial results and position. The calculus of earnings management is considered within the confines of agents' treatment of risk. Using an Agency Theory framework, this study examines the techniques used by agents to manage and manipulate earnings. The study initially tests the hypothesis whether earnings are really managed. For this purpose two manipulation indices were developed and based upon these indices the phenomenology earnings management was considered.     

Sticky Price Models of the Business Cycle: Can the Contract Multiplier Solve the Persistence Problem?

We construct a quantitative equilibrium model with firms setting prices in a staggered fashion and use it to ask whether monetary shocks can generate business cycle fluctuations. These fluctuations include persistent movements in output along with the other defining features of business cycles, like volatile investment and smooth consumption. We assume that prices are exogenously sticky for a short time. Persistent output fluctuations require endogenous price stickiness in the sense that firms choose not to change prices much when they can do so. We find that for a wide range of parameter values, the amount of endogenous stickiness is small. Thus, we find that in a standard quantitative model, staggered price‐setting, alone, does not generate business cycle fluctuations.     

JOB MARKET SIGNALING OF RELATIVE POSITION,OR BECKER MARRIED TO SPENCE

This paper considers a matching model of the labor market where workers, who have private information on their quality, signal to firms that also differ in quality. Signals allow assortative matching in which the highest‐quality workers send the highest signals and are hired by the best firms. Matching is considered both when wages are rigid (nontransferable utility) and when they are fully flexible (transferable utility). In both cases, equilibrium strategies and payoffs depend on the distributions of worker and firm types. This is in contrast to separating equilibria of the standard model, which do not respond to changes in supply or demand. With sticky wages, despite incomplete information, equilibrium investment in education by low‐ability workers can be inefficiently low, and this distortion can become worse in a more competitive environment. In contrast, with flexible wages, greater competition improves efficiency.     

网络密度、高管注意力配置与企业绿色创新:制度压力的调节作用

本文整合社会网络理论、注意力基础观和新制度主义理论等,通过对282家制造企业的问卷调查,采用多元回归分析方法,探讨了网络密度和高管注意力配置的交互匹配对企业绿色创新的影响机制,以及制度压力在其中的调节作用。研究发现,在高密度网络中,高管采用注意力聚集策略对绿色创新有显著正向影响;而在低密度网络中,高管采用注意力分散策略对绿色创新有显著正向影响。规制压力和模仿压力均正向调节网络密度和高管注意力配置的交互作用对绿色创新的影响,但模仿压力的调节作用更强。通过构建不同制度压力情景下网络密度与高管注意力的交互作用对绿色创新影响的理论框架,本文推动社会网络理论、注意力基础观等成熟的理论成果从一般创新向绿色创新研究领域繁衍,为企业绿色创新加入与主流理论的对话做了努力,为企业在绿色创新过程中根据不同的制度压力,以及所嵌入的组织间网络密度情况,选择合适的注意力配置策略提供理论参考。     

Product Positioning and Pricing Under Production Cost Considerations*

A framework in a competitive environment is proposed that incorporates production cost and economies of scale in the problem of positioning a product for a market segment. The model facilitates the existence of a Nash equilibrium in prices and product positions. As such, firms can simultaneously choose prices and product positions for the segment. This result improves the traditional theory on equilibria points in prices and product positions where firms choose their product positions first and then set their prices. A sensitivity analysis demonstrates the effects of changes in the unit savings derived from economies of scale or the cost of furnishing a product with its attributes by one firm on the product positions, prices, and profits of all competing firms. More important, the paper examines the effect on prices and profits of competing firms when one of the firms repositions its product closer to the segment's ideal point. It is shown that under certain conditions, the profit of a firm may actually decrease as it redesigns its product closer to the segment's ideal point. These conditions assist management to identify the product design beyond which enhancements of the product would lead to lower profits because of increasing production costs. It is also shown that the price of this firm increases. Past research supports the idea that positioning a brand closer to the ideal point, given fixed product positions of competing firms, would lead to greater buyer preferences and eventually higher profits. The price and profits of the competing firm may increase or decrease. Conditions are derived under which a movement towards the segment's ideal point by one firm would lead to higher profits by the competing firm.     

竞争中的参考价格效应及承诺

消费者的社会感知会影响其对产品和品牌的评价。当消费者进行购买选择时,经常会受到参考价格效应的影响。而广告和价格不仅是企业经常要考虑的重要决策,还会对参考价格产生重要影响。为此,一个值得研究的的问题是：在考虑参考价格效应的情况下,企业该怎样确定其动态广告和价格策略？
为了研究该问题,本文构建了一个广告和价格的动态模型,来研究一个双寡头市场环境下两个寡头企业的价格和广告决策,并以此分析参考价格效应的作用。具体而言,我们假定企业可以采用广告承诺和价格承诺中的一种,其中前者承诺其在一段时间内的广告投入量恒定不变,而后者确保价格不变。两种策略不仅会影响消费者的购买决策,也会影响竞争对手的选择。在上述假定下,我们探讨了两个寡头企业在都采用广告承诺、都采用价格承诺及一个企业采用广告承诺而另一个企业采用价格承诺等三种不同情形下的最优广告和价格决策,并以此分析了三种情形下参考价格效应对最优的广告投入及定价策略的影响。最后,通过数值分析,探讨了不同情形下企业的最优策略选择。     

承销商变更对股权再融资的影响:理论与实证

从理论和实证两方面,研究上市公司股权再融资(SEO)时是否更换承销商的决策问题以及承销商变更对上市公司资本市场表现的影响.理论模型表明,当承销商和发行公司之间存在较为严重的信息不对称,即在首次公开发行(IPO)时,不同资产质量的公司都能获得高声誉承销商承销;而当发行公司和承销商对彼此状况了解更为深入,即SEO时,高声誉承销商能识别不同公司的资产质量,出于对自身声誉的维护,不再承销低资产质量的公司,此时低资产质量的公司只能选择低声誉的承销商.实证结果与理论模型相符合,实证发现:相对于质量好的公司,质量差的公司在SEO时被迫更换承销商的概率更高.更换组公司与未更换组公司在IPO时雇佣的承销商声誉没有显著差别,而更换组公司在SEO时雇佣的承销商声誉明显较差.进一步探究承销商变更对公司市场表现的影响时,发现相较于更换了IPO承销商的公司,未更换承销商的公司在SEO时能够获取更低的折扣率和更高的长期股票回报率,这一结果在多种测试下都是稳健的.     

零售市场价格策略的演化博弈分析

基于一个三阶段Hotelling博弈模型:位于[0,1]线性城市两端的零售A和B第一阶段同时选择价格策略变量,第二阶段确定价格的大小,第三阶段由消费者选择零售商。应用演化博弈论进行研究,分析了零售市场价格策略的演化稳定性。