Do we now collect any revenue from taxing capital income?

The U.S. income tax system has long been recognized as a hybrid of an income and consumption tax system, with elements that do not fit naturally into either pure system. What it actually is has important policy implications for, among other things, understanding the impact of moving closer to a pure consumption tax regime. In this paper, we examine the nature of the U.S. income tax system by calculating the revenue and distributional implications of switching from the current system to one form of consumption tax, a modified cash flow tax.     

Endogenous fluctuations in unionized economies with productive externalities

Summary. We discuss the effects of unions on steady-state multiplicity and welfare, and on the existence of endogenous fluctuations. We consider an OG economy with productive capital externalities and we focus on underemployment equilibria. We find that for wide regions in the parameter space, including an arbitrarily small degree of externalities and a Cobb-Douglas technology, unions increase steady state employment and welfare, and local indeterminacy (sunspots) emerges. Moreover with a CES technology multiplicity of steady states is only possible in the presence of unions. Our results also show that the role of unions in shaping local dynamics and bifurcations depends on technology (externalities and factors substitutability).Received: 16 January 2002, Revised: 18 March 2004, JEL Classification Numbers: E32, J51, D60, D62. Correspondence to: Leonor ModestoThis paper is a much revised version of our former working paper Unions, Increasing Returns and Endogenous Fluctuations. Financial support from Fundação para a Ciência e Tecnologia under the POCTI, is gratefuly acknowledged.     

企业技术创新网络治理机制研究

企业技术创新网络是在现代技术创新环境中产生的新型创新模式。其目的是在提高企业技术创新能力的同时,使网络中所有成员共同获益。在对企业技术创新网络的组织结构及特征进行论述的基础上,分析了其在运行过程中存在的主要问题,并针对性地给出了企业技术创新网络的一系列组合治理机制。     

Endogenous human capital accumulation, comparative advantage and direct vs. indirect redistribution

Recently, several papers have reexamined the so-called production efficiency theorem and the Atkinson and Stiglitz theorem on commodity taxes in the optimal taxation literature. Naito [J. Public Econ. 71 (1999) 65] showed that indirect redistribution through production distortion or consumption distortion can Pareto-improve welfare and that the two theorems do not necessarily hold when different factors are imperfect substitutes and factor prices are endogenous. On the other hand, Saez J. Public Econ. (2002) forthcoming argued that in the long run, where human capital accumulation is endogenous, the two theorems are still valid. This paper develops reasonable alternative models where individuals accumulate human capital based on their comparative advantage. The present paper shows that the production efficiency theorem is not necessarily valid and that indirect redistribution from the able to the less able such as tariffs and production subsidies can increase efficiency even when skill accumulation is endogenous.     

从京东方负债扩张看我国的杠杆收购

20上世纪80年代风靡美国的杠杆收购方式以其巨大的溢价空间和较高的财务、经营风险引起理论学者的研究和实践人士的青睐。我国现阶段,实行杠杆收购有着非常深远的影响和广阔的空间,但仍存在许多制约因素,如法律不完善、资本市场弱式化、投资银行不发达、管理人员素质不高等。     

资本市场变迁及运行效率相关研究评析

资本市场变迁及运行效率是中外学者研究的重点，形成了许多理论流派，其中信息空间理论为资本市场制度变迁提供了新的分析框架。同时，中国资本市场正处在发展建设之中，亟需有效的理论指导其发展。然而，中国资本市场的不完备性和特殊性导致诸多理论的应用存在局限性。而信息是各理论流派研究的核心，只是角度和侧重点不同，故信息空间理论可为研究资本市场变迁和制度选择提供新的研究思路。     

Changing rewards in contests: Has the three-point rule brought more offense to soccer?

In the mid-nineties FIFA decided to increase from two to three the number of points assigned to the winning team of a soccer match played under traditional round-robin national leagues. Since a game of soccer can be regarded as a contest, FIFA's measure provides an interesting case-study for analysing how a change in the system of rewards (from a zero to a non-zero sum rule) may affect the contestants' equilibrium behaviour. In this paper we try to assess, both theoretically and empirically, whether FIFA's new point rule has changed soccer towards a more offensive game, in which teams adopt more risky strategies. In particular, we evaluate the “na?ve hypothesis” according to which the measure would induce every team to play always more offensively, and we explore the extent to which the change in teams' behaviour may be affected by quality differentials between teams. Our most important hypothesis is that when the asymmetry between opposing teams is large enough, an increase in the reward for victory induces the weaker team to play more defensively, rather than the opposite. By looking at a subset of matches held in the Portuguese first division league, which approximate the conditions of our model, we find support for this hypothesis. First version received: July 1999/Final version received: May 2001     

论强制性环境治理制度的实施效率

In the eco-environmental governance system,the compul-sive institutions are the most important as well as the mostcommonly utilized.A nation utilizes its administrative,lawand economic power to forbid,boost,bestir and help indi-viduals’behavior concerning environmental governance toensure the realization of eco-environment conservation.The fact,however,turns out to be disappointing about theimpulsive institution’s implementation.Actually,the unsatis-factory practices sometimes even lead to“…     

中国上市公司负债比率偏低的影响因素分析

本文在国外资本结构理论的基础上，将西方公司与中国公司的资本结构特点进行比较，从内因和外因两个方面解释了中国上市公司负债比率偏低的现象。     

铜陵矿区生态经济建设

本文根据矿区生态经济系统协调发展和演化的原理,提出合理规划、建设铜陵生态市的建议,以实现铜陵经济、社会的可持续发展。