Joint outputs and real wage rates

The magnification effect in standard international trade theory asserts that if the relative price of the labor-intensive commodity increases, the real wage will also increase, as will the wage/rental ratio. This result depends upon the assumption that both activities are nonjoint—each combining labor and capital to produce a single output, so that if activities are joint instead, the results are in jeopardy. It is shown that if the difference between the share of commodity one produced in the first activity and in the second activity exceeds the difference between the labor distributive shares in the first activity and the second, an increase in commodity 1's relative price raises the wage/rental ratio. The real wage unambiguously rises in this case if and only if the ratio of the commodity output shares in the two activities exceeds the ratio of labor shares.     

江西省农村金融生态发展滞后现状、成因及其破解

良好的金融生态可以促进农村经济结构调整和经济增长方式的转变,增强资金的使用效率。文章结合相关的金融生态水平指标对江西省农村金融生态状况进行了一般性描述,并分析其发展滞后的原因,在此基础上演绎出相应的政策选择。     

价值型投资在中国证券市场上的有力证据

本文给出了1994年至2005年间价值型投资在中国A股市场中的有力证据。Fama—MacBeth回归表明在中国A股市场中存在着显著的市盈率和市净率溢价，1994年至2005年中牛市和熊市的滚动策略显示了我国A股市场中的价值效应，并且风险和收益之间基本上呈现出收益大、风险大的特征。本文的实证研究结果将有助于中小投资者以及机构投资者的长期投资决策。     

Is doing good good for you? how corporate charitable contributions enhance revenue growth

This study examines the impact of corporate philanthropy growth on sales growth using a large sample of charitable contributions made by U.S. public companies from 1989 through 2000. Applying Granger causality tests, we find that charitable contributions are significantly associated with future revenue, whereas the association between revenue and future contributions is marginally significant at best. We then identify the mechanism underlying our findings. Our results are particularly pronounced for firms that are highly sensitive to consumer perception, where individual consumers are the predominant customers. In addition, we document a positive relationship between contributions and customer satisfaction. Overall, our evidence suggests that corporate philanthropy, under certain circumstances, furthers firms' economic objectives. Copyright © 2009 John Wiley & Sons, Ltd.     

刍议我国增值税转型

实行消费型增值税有利于加快企业发展,提升产品竞争力。目前我国已具备增值税转型条件,宜采用“一步到位”方式,但不宜提高税率。     

机构投资者真的有助于降低盈余管理吗？——来自中国上市公司混合与平衡面板数据的证据

本文采用中国上市公司2004～2008年相对较长时期数据,在控制机构投资者持股比例与盈余管理程度内生性基础上,通过混合与平衡面板数据模型回归分析发现：机构投资者持股比例与正向盈余管理显著正相关,其中国有控股企业的这种相关性较非国有控股企业更显著;国有控股企业中机构投资者持股比例与负向盈余管理显著负相关,而非国有控股企业中则变成显著正相关;机构投资者持股比例与盈余管理绝对值显著正相关,其中国有控股企业的这种相关性较非国有控股企业也更为显著。这些证据充分说明中国机构投资者仍然是短视的,对盈余管理不存在制约作用反而推动了企业的盈余管理。     

人口抚养比对经济增长的影响分析——基于陕西省1978—2007年的实证分析

从人口抚养比角度分析对经济增长的影响是一个新的视角。文章运用动态计量方法研究了陕西省人口抚养比、固定资产投资、劳动力投入对经济增长水平的影响。研究发现,陕西省人口抚养比对经济增长有较强的负面影响,并且有滞后效应;劳动力投入和固定资产投入长期对经济增长有正面的影响,陕西省经济增长具有自促进能力,因此,经济政策的制定应该考虑人口抚养比的负面影响。     

养老保险金替代率研究

养老保险金替代率是指一定地区当年离退休(含退职，下同)人员的养老金平均水平与该地区当年职工平均工资水平的比率，其是否合理，将影响到养老保险制度安排和政策取向。养老保险金替代率目标的确定，将受到一个国家或者地区的社会保障水平和经济发展水平等因素的影响。按照中国对基本养老保险制度改革的总体思路，未来基本养老保险金替代率目标确定为60％左右。目前，中国基本养老保险金替代率目标已经接近制度改革的目标，北京市的基本养老保险金替代率明显低于全国水平。企业退休金的替代率又明显低于事业和机关单位的退休金替代率，并呈现持续下降的趋势，应当设法进行遏止。     

On the joint Fourier–ESTAR testing of PPP

The purchasing power parity (PPP) is the hypothesis that the real exchange rate series are stationary. This study briefly reviews and applies six competing unit root test procedures to test PPP. Reflecting the existing literature, the results are mixed. The Kiliç test is the most favourable while the Kapetanios, Shin, and Snell (KSS) test is the least favourable to PPP and the standard ADF test lies in between. The same conclusion applies to the Fourier extensions of those three tests. The results support a recently suggested F-test for the significance of Fourier terms in unit root test equations.     

汇率风险套期比率确定方法的比较与评析

套期比率确定方法可大致分为基于回归技术和基于均值/方差理论的套期比率确定方法两类。采用新的计量分析工具来研究不完备市场中的套期保值,以及带“摩擦”的金融市场中的套期保值,将会成为现代套期保值理论新的理论领域。