Nonlinearities and heterogeneity in environmental quality: An empirical analysis of deforestation

We use a panel data set of 59 developing countries over the 1972–1994 period to study the deforestation process. Relying on both parametric and semiparametric models, we examine nonlinearities and heterogeneity in the deforestation process. We first study the existence of an Environmental Kuznets Curve (EKC) and then analyze determinants of deforestation. Our data sample provides no evidence of an EKC. We also find that political institution failures may worsen the deforestation process in developing countries.     

上市公司资产负债率行业影响的实证研究--对已有研究结论的质疑

文章从行业的角度对沪深A股上市公司的资产负债率进行了较为深入的研究。与国内一些学者的研究结果不同,文章研究发现:(1)行业对资产负债率具有显著影响,但这种影响的力度相当微弱;(2)资产负债率的行业差异并不具有普遍性;(3)同一行业内的资产负债率并不具有相似性,且行业内的差异要大于行业间的差异;(4)上市公司并不存在最优的行业资产负债率;(5)大部分行业的资产负债率与其行业特性不符。     

基于"星形模型"的中小企业区域竞争力研究——关于中部六省的实际测算

中小企业竞争力作为区域竞争力提升中不可忽视的力量,已愈来愈受到人们的重视。文章以中小企业竞争力和区域竞争力理论为出发点,提出了中小企业区域竞争力概念,并在回顾波特国家钻石模型的基础上,提出了中小企业区域竞争力星形模型,同时将其应用于中部六省的中小企业区域竞争力的测算中,检验了模型的有效性和实用性。     

美国金融业对外直接投资流向的实证分析

美国1995年～2000年金融业对外直接投资流向分布极不均衡,对投资流向分布进行统计分析发现,非金融领域直接投资、1994年金融业对外直接投资存量、双边贸易量、东道国经济金融发展水平是金融业对外直接投资的主要决定因素,证明了邓宁国际生产折衷主义理论对金融业对外直接投资的解释力。据此简要分析美国对中国金融领域直接投资现状,并分析了今后发展趋势。     

Do stock market returns predict changes to output? Evidence from a nonlinear panel data model

Recent empirical work suggests a predictive relationship between stock returns and output growth. We employ quarterly data from a panel of 27 countries to test whether stock returns as useful in predicting growth. Unlike previous research, our approach allows for the possible non-linear effect of recessions on the growth-return relationship. There is strong evidence to suggest that a linear model would be misspecified and provide potentially misleading inference. Using a switching regression approach, we find evidence that returns are most useful in predicting growth when the economy is in recession.First version received: November 2002/Final version received: April 2003This paper benefited greatly from discussions with Kalvinder Shields, Mark Harris, Pete Summers, and Vance Martin. Two anonymous referees provided useful comments on an earlier version of the paper for which we are grateful. The usual disclaimer applies to any errors and omissions. Funding from The University of Melbourne greatly assisted in the completion of this paper.     

构造与市场经济相适应的现代公有制形式

公有制的改革与发展问题是建设有中国特色社会主义经济的核心问题。要完善社会主义初级阶段基本经济制度，实现公有制与市场经济的结合，只在公有制的实现形式上做文章是不够的，还必须高度重视和认其解决公有制本身的存在形式即公有制形式问题。     

关于可持续发展理论与实践的若干思考

可持续发展理论与实践的深入有赖于在四个方面的重新认识：首先，可持续发展是观念性、战略性实践性的统一；其次，可持续发展是层次性与阶段性的统一；第三，可持续发展是区域性与综合性的统一；最后， 制度变革与创新是影响可持续发展的关键因素。     

征税成本领先性假设与中国税务组织结构优化——兼析中国国税、地税机构是否存在合并趋势

本文从征税成本领先性假设出发探讨了中国税务组织结构的优化问题 ,并分析了社会各界广泛关注的中国国税、地税机构是否存在合并趋势的问题。本文在对中国现行税务组织机构运行绩效考察的基础上 ,发现中国征税成本曲线呈抛物线状 ,表明中国征税成本正呈递减趋势。以此为出发点 ,本文详细论证了中国国税、地税机构不存在合并的趋势 ,相反 ,分设更为彻底却是今后的发展趋势 ,得出了与一般看法不同的结论 ,并对优化中国税务组织结构提出了政策建议     

Is capital a collusion device?

Summary. We examine how irreversible capital reduces the possibility of a duopoly to sustain implicit collusion by grim strategies, when the product is homogenous and firms compete in quantities. Compared with the case of reversible capital, there are two countervailing effects: Deviation from an existing collusion is less attractive, because capital once installed causes costs forever. But the punishment will also be less severe due to the high capacity the deviating firm can build before punishment starts. The last effect dominates, meaning that the commitment value of capital is negative for all firms. If capital is irreversible, collusion breaks down for realistic magnitudes of interest rates. Received: April 30, 1999; revised version: November 30, 2001