企业规模、控制人性质与企业融资约束关系研究

融资约束不同的企业在承受利率冲击上存在较大差异。不同于以往研究,笔者以上市公司为研究对象,考察不同规模、不同控制人对融资约束的影响,探讨它们之间的相互关系。研究发现,随着规模的扩大,我国上市公司面临的融资约束也在增大,这与以往学者研究结果相悖;控制人性质与上市公司融资约束关系紧密,国有上市公司面临的融资约束大于非国有上市公司;我国股票市场在一定程度上能够还原企业面临的真实融资约束。     

Constructing Asset Pricing Models With Specific Factor Loadings

We demonstrate how one can build pricing formulae in which factors other than beta may be viewed as determinants of asset returns. This is important conceptually as it demonstrates how the additional factors can compensate for a market portfolio proxy that is mis‐specified, and also shows how such a pricing model can be specified ex ante. The procedure is implemented by first selecting an ‘orthogonal’ portfolio which falls on the mean‐variance efficient frontier computed from the empirical average returns, variances and covariances on the equity securities of a large sample of firms. One then determines the inefficient index portfolio which leads to a vector of betas that when multiplied by the average return on the orthogonal portfolio, and which when subtracted from the vector of average returns for the firms comprising the sample, yields an error vector that is equal to the vector of numerical values for the variables that are to form the basis of the asset pricing formula. There will then be a perfect linear relationship between the vector of average returns for the firms comprising the sample, the vector of betas based on the inefficient index portfolio and such other factors that are deemed to be important in the asset pricing process. We illustrate computational procedures using a numerical example based on the quality of information contained in published corporate financial statements.     

企业规模、融资结构与经营绩效——基于战略性新兴产业和传统产业对比的研究

战略性新兴产业要不要发展以及如何发展,这是目前理论和实务界普遍关注的问题。本文以广东省的上市公司为样本,基于和传统产业的对比,研究了战略性新兴产业的企业规模和融资结构对其经营绩效的影响。研究发现企业规模和股权资本对传统产业和战略性新兴产业绩效的影响迥异,即规模扩张不利于传统产业提高经营绩效,却有利于战略性新兴产业提高经营绩效;股权资本降低了传统产业的经营绩效,却显著提高了战略性新兴产业经营绩效。这个研究结果表明战略性新兴产业目前还处于规模效应递增阶段,需要大力发展;同时表明其规模的扩张更倾向于通过股权融资的方式来实施。本文的研究结论有重要的理论意义,对国家宏观经济政策的制定具有一定的参考价值。     

Size, value and liquidity. Do They Really Matter on an Emerging Stock Market?

The paper extends the evidence on factors determining stock prices on emerging markets by focusing on the most advanced stock market in Central and Eastern Europe, the Polish market. Besides market, size and value factors, we investigate whether liquidity is a priced risk factor, addressing the hypothesis of its particular relevance in emerging markets. Our results support existing evidence for developed markets regarding market, size, and value factors. Contrary to the expectation that liquidity is a priced factor on emerging markets, we do not find evidence supporting this hypothesis. Analyzing specific market characteristics, we consider possible explanations behind these findings.     

Anchoring-Adjusted Capital Asset Pricing Model

What happens when the capital asset pricing model is adjusted for the anchoring and adjustment heuristic of Tversky and Kahneman [1974 Tversky, A., and D. Kahneman. “Judgment Under Uncertainty: Heuristics and Biases.” Science, 185, (1974), pp. 1124–1131.[Crossref], [PubMed], [Web of Science ®] , [Google Scholar]]? The surprising finding is that adjusting the capital asset pricing model for anchoring provides a plausible unified framework for understanding almost all of the key asset pricing anomalies. The anomalies captured in the theoretical framework include the well-known size and value effects, high alpha of low beta stocks, accruals, low volatility anomaly, momentum effect, stock splits, and reverse stock splits. The market equity premium is also larger with anchoring. This suggests that the anchoring-adjusted capital asset pricing model may provide the needed unifying structure to behavioral finance.     

同群效应如何影响学生的认知能力

义务教育公平既包括显性层面上受教育机会在不同群体间的合理分配,又包括隐性层面上教育质量的保障,迄今为止的研究关注前者较多而后者较少。本文使用CEPS 2013-2014年对中国初中生的随机调查数据,以学生的同群效应为切入点,研究该效应对个体认知能力的影响。分析显示:(1)中国义务教育阶段的同群效应对学生的成绩具有负面影响,在推广义务教育过程中不断增加的班级和学校规模放大了该影响;(2)成绩较好的学生通过与同层次学生的互动而受益,但成绩较差的学生却在此过程中受损;(3)就传导机制而言,班级规模与教师特征等因素是其主要方面。中国在新时期的义务教育政策,应该从简单的数量扩张逐步转向重视质量的新方向,兼顾教育显性的机会公平和隐性的过程公平。     

The earliness of exporting and creeping sclerosis? The moderating effects of firm age,size and centralization

By using a sample of 644 manufacturing firms in four EU countries and five regions, we investigate the earliness/exporting relationship. Firstly, we examine the firm’s ability to retain LAN over time as it gets older and bigger. Secondly, we examine the role played by the firm’s decision-making structure. Our results reveal that exporting sclerosis does set in, as age and size of the firm significantly and negatively affect the earliness/exporting relationship. In addition, however, we find that centralization plays a role in the sclerotic effects of size (though only weakly for age), exacerbating their moderating effects on the earliness/exporting relationship. Our study claims to contribute to internationalization research by advancing the idea that LAN is not path-dependent but subject to liabilities. Beyond age and size, we add the more nuanced “liability of centralization” to boundary conditions for retaining LAN. Theoretical and managerial implications emerge.     

Information and the Production of Management in a Theory of the Firm

Abstract

I show that the three main contributions to the theory of the business of the last century – those of Cobb and Douglas (1928 Cobb, Charles W., and Paul H. Douglas. 1928. “A Theory of Production.” American Economic Review 18 (Supplement): 139–165. [Google Scholar]), Coase (1937 Coase, Ronald. 1937. “The Nature of the Firm.” Economica 4 (16): 386–405.[Crossref] , [Google Scholar]), and Lucas (1978 Lucas Jr, Robert E. 1978. “On the Size Distribution of Business Firms.” Bell Journal of Economics 9 (3): 508–523.[Crossref] , [Google Scholar]) – are actually complementary and can be fitted into a general model of the firm size choice as the solution to a problem of optimal allocation of decision making in the economy. Decisions require information, and the availability and cost of information drives the optimization of firm size by the relevant decision makers - managers and entrepreneurs - pursuing the maximization of profits. Trends in firm size, and their reversals, are shown to depend on the aggregate information/output ratio.     

企业规模与R&D投入关系的实证研究——基于沪市A股制造业上市公司的数据分析

以70家制造业上市公司为研究样本,对公司规模与R&D投入的关系进行了实证检验。研究结果表明,我国制造业上市公司R&D费用强度和R&D人员强度与企业规模都显著负相关,而R&D投入绝对额与企业规模显著正相关;我国制造业上市公司R&D费用强度平均达到了国际上公认的维持生存的水平(2%),但分布不均,低投入状况与高投入状况并存;但从R&D人员投入来看比较理想,大多数公司的R&D人员强度达到了发达国家10%的水平。 ?     

Measuring Scale Efficiency from a Translog Production Function

In parametric analysis based on a frontier production function, usually the scale elasticity rather than scale efficiency level is reported. In this paper we show how one can use an estimated translog production function to obtain output- and input-oriented measures of scale efficiency at an observed input bundle. We also show how the estimated model can be used to determine the optimal quantity of labor input for an exogenously fixed quantity of capital.