单位根检验问题的影响评价

对时间序列单位根检验模型进行影响分析研究,使用数据删除法(case deletion)和局部影响分析方法(local influence)对单位根检验中的DF检验统计量进行影响评价研究,最后使用模拟数据比较两种方法在探测异常值和影响点上的优劣。     

Modeling and calculating the effect of treatment at baseline from panel outcomes

We propose and examine a panel data model for isolating the effect of a treatment, taken once at baseline, from outcomes observed over subsequent time periods. In the model, the treatment intake and outcomes are assumed to be correlated, due to unobserved or unmeasured confounders. Intake is partly determined by a set of instrumental variables and the confounding on unobservables is modeled in a flexible way, varying both by time and treatment state. Covariate effects are assumed to be subject-specific and potentially correlated with other covariates. Estimation and inference is by Bayesian methods that are implemented by tuned Markov chain Monte Carlo methods. Because our analysis is based on the framework developed by Chib [2004. Analysis of treatment response data without the joint distribution of counterfactuals. Journal of Econometrics, in press], the modeling and estimation does not involve either the unknowable joint distribution of the potential outcomes or the missing counterfactuals. The problem of model choice through marginal likelihoods and Bayes factors is also considered. The methods are illustrated in simulation experiments and in an application dealing with the effect of participation in high school athletics on future labor market earnings.     

地方性公共品供给制度创新研究

在市场经济条件下 ,地方政府的主要职责是分级提供各种地方性公共品 ,满足居民生活和企业生产的共同需要。但是 ,政府提供并不等于政府生产 ,更不等于政府垄断生产。中国现行地方性公共品供给制度的主要缺陷是地方政府以及公共部门的过度垄断。按公共品生产与提供、直接生产与间接生产分开等原则 ,打破垄断 ,有序地向国内外开放公共品生产市场 ,大力推进公共品生产的市场化 ,形成“公”与“私”以及各自内部的竞争 ,将有助于提高地方性公共品供给效率 ,增进公共福利 ,并有助于推进中国的市场化进程。     

地方保护主义对地区产业结构的影响——理论与实证分析

本文旨在考察地区政府保护对地方产业结构的作用,对地区间产业结构趋同问题进行了研究。本文首先提出理论模型,在一个厂商投资行为模型中,从改变地区间贸易成本和政府直接投资两个方面引入地方政府行为变量,讨论政府行为对地区产业结构的影响。模型分析发现贸易成本的增加会促使地区间产业结构趋同,而政府直接投资对产业结构的影响并不确定,在一定情况下会促进地区间产业结构差异化。这些结论在随后进行的对中国近年地区和产业数据的实证研究中得到了验证。趋势分析发现样本年间我国地区产业结构差异的全国平均水平在逐年增大。而以地区为着眼点的计量回归分析则发现,在控制了运输条件、地区资源差异和产业结构等历史因素之后,政府变量对地区间产业结构差异变化有显著影响。政府设置贸易壁垒增加地区间贸易成本,会促进地区间产业结构趋同。政府的投资行为则在整体上促进了地区间产业结构的差异化。     

Local tax management in Spain: A study of the conditional efficiency of provincial tax agencies

This paper reports an efficiency analysis of local tax management by provincial tax agencies in Spain based on supramunicipal delegation. To conduct this study, we used the robust order-m conditional model that directly accounts for some socioeconomic environmental variables to estimate the efficiency scores. This is a key issue, as tax agencies do not have control over the context in which they operate, and this may have a severe impact on their performance. Our results suggest that several of the provincial contextual variables accounted for (the net property tax base, population density and inhabitants of the municipalities that have delegated management to the provincial tier of government) have a negative impact on efficiency, especially at higher variable value levels. Considering that the provincial tier of government can opt to set up specific self-governing agencies to perform these tasks, we also applied metafrontier analysis to assess their share in inefficiency. We concluded that the establishment of such self-governing agencies does not lead to higher efficiency levels.     

民营经济地方立法与政策比较

地方立法与政策扶持在开创民营经济的发展条件方面作用巨大。笔者拟通过对地方发展民营经济政策、立法的比较，为进一步完善民营经济地方政策与立法提供借鉴。     

Local trade networks and spatially persistent unemployment

This paper studies the effects of local trade networks on the spatial distribution of employment in a model that allows for effective demand externalities as well as home bias. It is shown that, if labor can be hired in continuous quantities, then the long run spatial distribution of employment is uniform, and independent of any trade network topology. When labor has binary support, however, local trade networks are found to generate spatial unemployment clusters which can persist indefinitely.     

Internalizing intergenerational externalities by regionalization

The emission of long-lived pollutants and public debt policies are related by the joint problem of intergenerational externalities. This paper examines both phenomena from the local perspective, in a model with interregional household mobility. We conclude that local environmental agencies have incentives to internalize all intergenerational pollution externalities, provided all rents of immobile production factors, including waste emissions, are appropriated by the regions. Contrary to widespread belief, however, neutrality of local public debt is not guaranteed in general. Shifts in the intertemporal pattern of local taxes change the net wealth of local property owners if distortionary residence-based taxes are imposed to service the local debt.     

建立我国地方债制度的客观条件与实施策略构想

建立地方债制度是我国进一步深化财政体制和政府融资体系改革亟待解决的重大现实问题.目前建立地方债制度既有利也存在诸多不利条件.对此,可本着稳妥、谨慎的原则,从地方债的发行、管理及相关的配套改革等方面构建我国地方债制度,并针对发行地方债可能出现的负效应制定相应的解决措施.