最优能源强度与我国经济增长

本文通过一个内生增长模型对能源消费与经济增长的关系进行了分析,证实存在使经济增长率最大化的最优能源强度,并且最优能源强度与能源价格反方向变动.在此基础上,估计了近年来我国的最优能源强度,并测算了实际能源强度与最优值的差距.结果表明,近年来我国实际能源强度高于最优值达3万吨标准煤/亿元以上,且有不断上升的趋势.最后提出了在保持最优能源强度的前提下降低能源消耗的政策建议.     

分税财政体制下的地方税体系健全探究

1994年税制改革并实行分税财政体制后建立起了现行地方税体系。随着我国经济体制改革的深入和经济建设的迅速发展,地方税体系在税权划分、税种设置及税收征管方面存在的问题日益显露。针对这些问题,在总结国外地方税体系建设经验基础上,结合我国的实际情况,提出相应健全措施。     

A rejoinder

Abstract

This paper reflects on the influence of Vilfredo Pareto's letters on Ricardian equivalence and fiscal theory to Benvenuto Griziotti and Guido Sensini. The letters are important for emphasizing the need for fiscal studies to consider equilibrium, particularly social equilibrium, at a time when Italian fiscal sociology was in its formative stage. Griziotti came to accept fiscal sociology, albeit in an eclectic form that focused directly on political and legislative matters rather than social equilibrium. In contrast, Sensini progressively developed a framework for fiscal theory that focused primarily on the fundamental relationship between fiscal phenomena and social equilibrium.     

Gender gap in self‐employment: The role of risk attitudes

This paper examines the link between the willingness to take risk and the gender gap in self‐employment in the transition economy, where for decades entrepreneurship was considered a crime. Using rich data on risk preferences and entrepreneurial activities, we show that male–female risk tolerance differential is the main determinant of the gender gap in self‐employment in Ukraine. The decomposition results indicate that up to 38% of the gap can be attributed to this factor. Robustness tests support the validity of the baseline findings by suggesting that the results are not confounded by such factors as being unemployed before starting a current job, having a self‐employed household member, or living in a relatively wealthy household before transitioning to self‐employment.     

我国区域收入差距与经济增长关系的实证研究——基于东、中、西部面板数据的协整分析

坚持区域经济协调发展,逐步缩小地区间发展差距,是提高经济落后地区居民收入水平、缩小同发达地区居民收入差距的一项长期战略。改革开放以来,从整体上说,我国各省区居民的收入和生活水平都得到了很大提高,但是由于各种原因,地区间经济发展的差距不仅存在而且有不断扩大的趋势。对我国东、中、西部地区居民收入差距与经济增长之间的关系进行研究分析,比较了三个地区居民收入差距的现状与变动趋势,分析了影响居民收入差距的主要因素以及这些因素对经济增长的影响,研究了收入差距与经济增长之间所存在的关系。     

The nature of the steady state in models of optimal growth under uncertainty

Summary. We study a one-sector stochastic optimal growth model with a representative agent. Utility is logarithmic and the production function is of the Cobb-Douglas form with capital exponent . Production is affected by a multiplicative shock taking one of two values with positive probabilities p and 1-p. It is well known that for this economy, optimal paths converge to a unique steady state, which is an invariant distribution. We are concerned with properties of this distribution. By using the theory of Iterated Function Systems, we are able to characterize such a distribution in terms of singularity versus absolute continuity as parameters and p change. We establish mutual singularity of the invariant distributions as p varies between 0 and 1 whenever . More delicate is the case . Singularity with respect to Lebesgue measure also appears for values such that . For and Peres and Solomyak (1998) have shown that the distribution is a.e. absolutely continuous. Characterization of the invariant distribution in the remaining cases is still an open question. The entire analysis is summarized through a bifurcation diagram, drawn in terms of pairs .Received: 9 April 2002, Revised: 29 October 2002, JEL Classification Numbers: C61, O41.Correspondence to: Tapan MitraThis research was partially supported by CNR (Italy) under the "Short-term mobility" program and by M.U.R.S.T. (Italy) National Group on "Nonlinear Dynamics and Stochastic Models in Economics and Finance" . We are indebted to Rabi Bhattacharya for providing us with the reference to Solomyak's (1995) paper. The present version has benefitted from comments by Mukul Majumdar and two anonymous referees.     

Joint Quantity/Quality Management of Groundwater

Economic literature on groundwater managementhas traditionally been split into two areas: there are papers that evaluate different schemes of dynamicaquifer management, considering that pumping costs vary with stock but ignoring water quality. On the other hand, there are papers that considercontamination problems caused by specificpollutants. This paper presents two alternative models for joint quantity-quality management, and it shows that existing models are in fact special cases of these. The framework isdynamic and considers both the stock of waterquantity and a stock measure of water quality. Optimal taxes are derived, and shown to be different from those in existing quantity-only or quality-only models. Implementationproblems are briefly discussed.     

财政收入、财政支出与居民消费率

从财政政策收入分配功能的角度就财政收支对居民消费率的影响进行了理论分析,并采用全国数据和省级面板数据就财政收支对居民消费率的影响进行了实证分析。研究结果表明,我国过高的税负率对我国居民消费率的提高有负面影响,以间接税为主的财政收入结构不能实现社会财富再分配的均等化,不利于促进我国居民消费率的提高。财政消费性支出对居民消费具有挤出效应,而保障性支出有助于提高居民消费率。因此改变财政收支结构,强化财政收支的收入再分配功能是提高居民消费率的关键。     

外国直接投资对中国城乡收入差距的影响:中国省际面板数据的经验检验

二元劳动力市场模型的分析表明FDI对城乡收入差距的影响取决于高技能和低技能劳动力的供给弹性以及FDI对他们各自的需求影响。同时,利用1998-2010年中国29个省市的面板数据的实证研究也表明FDI在整体上有助于抑制城乡收入差距的扩大,这种效应在东部沿海地区尤为明显。此外,FDI通过改善农村劳动力的就业结构提高其工资性收入,从而缩小城乡收入差距。FDI的流入会通过贸易效应有利于缩小依赖加工贸易发展的东部地区的城乡收入差距;但另一方面,FDI通过人力资本效应的非均衡性扩大了城乡收入的不平等。     

基本养老保险基金：做实账户制还是名义账户制？

我国城镇企业职工基本养老保险个人账户在本质上体现的是养老权而不是财产权,基本养老保险个人财户权益的根本意义在于保障企业职工的社会养老权。我国从2001年开始实行做实企业职工基本养老保险个人账户试点,这不仅未能化解养老金支付风险,而且加大了养老保险基金保值增值难度,基金贬值程度也随着做实比例的提高而增大。另外,做实个人账户抬高了储蓄率并抑制了投资和消费需求,对经济发展产生了挤出效应。为解决上述问题,应建立更加公平可持续的养老金制度,通过名义账户制从根本上体现企业职工的财产权和社会养老权,解决做实账户制所出现