上市公司效绩分析

<正>一、引言“促进中部崛起”是中共中央、国务院继“沿海优先发展”、“西部大开发”、“振兴东北老工业基地”之后的又一项统筹区域经济协调发展、进行宏观调控的重大战略决策。近年来,中部地区的经济呈“塌陷”之势,人均GDP、工业增加值、     

时空压缩下的企业双元创新投资——来自高铁通车的证据

文章从新地理经济学视角,基于资源依赖理论、信息不对称理论和社会网络理论分析了高铁通车对企业双元创新投资的影响,以2010-2017年沪、深两市A股高新上市公司为样本,采用PSM-DID方法进行了实证分析。研究发现:高铁通车显著促进了企业探索式创新投资且具有一定的持续性,而对企业开发式创新投资没有明显的促进作用;进一步检验发现,高铁通车对企业探索式创新投资的促进作用仅体现在位于中西部和低人力资本水平地区的企业、非国有企业和处于成长期的企业,从而进一步验证了高铁通车加速了创新的人、财、信息、技术等资源的跨地区流动和转移,通过降低信息沟通成本、促进信任和企业社会网络的形成、降低企业高风险特质的探索式创新的融资约束与风险、进而促进企业探索式创新的内在机理。     

Price discovery among SSE 50 Index-based spot,futures, and options markets

This paper studies the contribution of newly launched SSE 50 Index-based options and futures to price discovery. We find that the derivatives markets quickly begin exhibiting price leadership over the corresponding spot market, despite their short history; the information share from both derivatives markets rose from 59.84% in mid-2015 to 84.6% in mid-2017. Using substantial regulation changes during the sample period, we test the trading cost hypothesis. The increases in derivatives transaction costs do not immediately impede their roles in price discovery. Findings suggest that in nascent and immature markets, investors’ trading experience matters more than trading costs.     

Illiquidity transmission from spot to futures markets

We develop a model of illiquidity transmission from spot to futures markets that formalizes the derivative hedge theory of Cho and Engle (1999). The model shows that spot market illiquidity does not translate one to one to the futures market but, rather, interacts with price risk, liquidity risk, and the risk aversion of the market maker. The model's predictions are tested empirically with data from the stock market and markets for single-stock futures and index futures. The results support our model and show that the derivative hedge theory provides an explanation for the liquidity link between spot and futures markets.     

The interaction effect of mobile phone screen and product orientation on perceived product size

Perceived product size is a key concern in online retail, particularly in fashion and grocery. The screen on which consumers view a product (e.g., desktop or mobile) might constitute a frame that biases size perception, on the basis of assimilation and contrast effects (pool and store theory). The rise of mobile commerce exacerbates this issue, as framing effects might be stronger versus desktop settings as screens are smaller. Further, as mobile phone's screen orientation varies situationally (vertical vs. horizontal), the perceived product size might vary, depending on the interaction of screen and product orientation. By introducing the framing ratio as a means to predict extent, dimensionality and symmetry of size biases, we generalize specific findings from extant research. Empirically, four experimental studies demonstrate that contextual frames (i.e., vertical vs. horizontal screens) and product orientation (e.g., jeans vs. shoes) interact to bias the size perception, in that sizes are overestimated on the dimension that approaches the frame (high framing ratio), compared with conditions where the frame is distant (low framing ratio). If product size is misperceived, willingness to pay might be affected (e.g., for groceries). Thus, size perceptions have a direct impact on managerially relevant variables.     

Warmer or cooler: the influence of ambient temperature on complex choices

Temperature affects human cognition, emotion, and behavior in important ways, yet exactly how ambient temperature exerts its influences on complex product choices remains largely unknown. In this research, we examine how relatively warm versus cool temperatures, both within a comfortable range and commonly experienced, can affect people’s decision quality in complex choices. In a series of three experiments, we demonstrate that warm (vs. cool) temperatures prompt affective processing, which then leads to better performance in complex choices. Consumers and companies need to take ambient temperature into account to create optimal environments for complex decision-making.     

Relationship keyness: The underlying concept for different forms of key relationship management

For companies, relationships with external actors may constitute intangible assets. Many firms have put in place key account management programs in order to pay sufficient attention to strategically important customers and the marketing literature has studied such programs. However, a company's relationship portfolio also comprises relationships with other types of actors. The objective of this paper is to show that - across the different types of external relationships a company may develop - some relationships have more importance than others and, hence, are key. The authors argue that, as a consequence, the keyness of certain relationships has led to the emergence of approaches which can be referred to as key relationship management. For this purpose, the authors first present empirical material on the management of relationships between companies and their partners in strategic alliances from the French IT sector. They then discuss the concept of keyness as well as the common characteristics of different forms of key relationship management such as key account management, key supplier management and strategic alliance management.     

Sophisticated play by idiosyncratic agents

Agents are drawn from a large population and matched to play a symmetric coordination game, the payoffs of which are perturbed by agent-specific heterogeneity. Individuals observe a (possibly sampled) history of play, which forms the initial hypothesis for an opponent's behaviour. Using this hypothesis as a starting point, the agents iteratively reason toward a Bayesian Nash equilibrium. When sampling is complete and the noise becomes vanishingly small, a single equilibrium is played almost all the time. A necessary and sufficient condition for selection, shown to be closely related (but not identical) to risk-dominance, is derived. When sampling is sufficiently incomplete, the risk-dominant equilibrium is played irrespective of the history observed.JEL Classification: C72, C73The authors thank Tom Norman, Kevin Roberts, Hyun Shin, Peyton Young, the editor and an anonymous referee for helpful comments. Correspondence to: C. Wallace     

Economic implications of better information in a dynamic framework

Summary. We consider an OLG model with accumulation in human capital and analyze the economic implications of information about individual skills. Agents in each period differ by the random innate ability assigned to each individual. When young, all agents are screened for their abilities and this screening process (signal) constitutes a public information which is used in choosing the level of private investment in education. We demonstrate that in the presence of risk sharing markets better information may be harmful for all in equilibrium, and find conditions under which better information either enhances growth or reduces growth.Received: 8 September 2003, Revised: 3 March 2004, JEL Classification Numbers: D80, J24.Correspondence to: Bernhard EckwertWe are pleased to acknowledge the useful comments and suggestions of R. Benabou, Z. Eckstein, E. Helpman, B. Ravikumar and D. Tsiddon. Also, special thanks are given to two anonymous referees. This research was supported by a Grant from G.I.F., the German-Israeli Foundation for Scientific Research and Development.     

To divide or not to divide? The impact of partitioned pricing on the informational and sacrifice effects of price

Firms often partition a product??s price into two mandatory parts (e.g., the base price of a mail-order DVD and the surcharge for shipping and handling) instead of charging one all-inclusive price. This study examines whether and to what extent partitioned pricing (compared to one all-inclusive price) influences the informational and sacrifice effects of price. We empirically show that partitioned pricing oppositely affects these two distinct roles of price: the informational effect of price (i.e., price as an indicator of quality) increases, while the sacrifice effect (i.e., price as a measure of sacrifice) becomes more negative. In product categories with substantial price?Cquality inferences, the positive impact of partitioned pricing on the informational effect can overcompensate for its negative impact on the sacrifice effect, making partitioned prices the preferable strategy.