人口老龄化、公共人力资本投资与 经济增长*

本文利用内生化老龄化的世代交叠模型,探讨了老龄化社会中为了促进经济增长可选择的公共人力资本投资的最优相对规模和结构。本文研究表明,公共人力资本投资相对规模（即占GDP比例）和公共健康支出占比（即占公共人力资本投资比例）均与经济增长呈倒U型关系,且最优值通过老龄化对经济增长的作用表现出来。即当老龄化对经济增长有促进（抑制）作用时,政府促进经济增长的政策是提高（降低）人力资本投资相对规模和公共健康支出占比。基于中国省级面板数据的实证研究发现,老龄化不利于经济增长,公共人力资本投资相对规模及公共健康支出占比偏大,均处在倒U型曲线的下降阶段,分别通过挤出对经济增长更具促进作用的私人投资、公共物质资本投资和公共教育支出而不利于经济增长。本文的政策含义是,政府需提高公共教育支出占比,引导和鼓励更有效率的社会私人资本进行人力资本投资,以逐步降低公共人力资本投资的相对规模。当前公共物质资本投资则需继续加强。     

我国经济发展方式非均衡特征及优化的政策选择——基于人力资本投资低水平“陷阱”视角的分析

本文以人力资本视角分析我国经济发展方式转变及促进经济可持续性的政策选择。研究表明,人力资本投资在发达国家经济增长方式转型中具有主导性的作用,而改革开放以来我国人力资本投资对经济发展的作用已经落入低水平陷阱,经济发展依赖于物质资本及低端劳动力的数量投入,人力资本与物质资本呈现非均衡特征,而且出现就业压力严峻与人力资本短缺并存的现象,物质资本与人力资本不匹配、人力资本投资结构与人才需求结构错位,以及收入分配与人力资本投资不足等问题日益凸显,经济发展可持续性受到挑战。对此,我国应明确人力资本投资对经济发展方式转变的重要作用和地位,通过增加教育投入、放宽教育准入制度及收入分配改革等渠道,实现人力资本投资的快速增长,促进经济发展方式的优化。     

Should Education be Publicly Provided?

This study suggests that a subsidy in the form of public provision has the potential to be the most efficient educational policy because it stimulates investment in human capital, which would otherwise be inefficiently low because of distortionary income taxation and possible external benefits. Moreover, it can potentially do this without grossly distorting the mix of investments in human capital. Other policies do not have the potential to achieve both these ends without introducing additional, perhaps overwhelming, problems. Thus public provision of education appears to provide incentives for human capital accumulation which are more efficient than any other feasible policy.     

财政支出结构与经济增长

通过构建理论模型和经验模型,我们可以得出以下结论:(1)财政支出总水平与经济增长负相关,财政生产性支出与经济增长正相关。(2)财政人力资本投资比物质资本投资更能提高经济增长率。(3)用于科学研究的支出所带来的经济增长远远高于物质资本投资和人力资本投资所带来的经济增长。这些结论对政府今后调整财政支出政策,优化财政支出结构,确定财政支出重点,具有重要的政策含义。     

Public Investment and Economic Growth in Latin America: an Empirical Test

The paper analyzes the impact on economic growth of public investment spending and other relevant variables (such as human capital) for nine major Latin American nations over the 1983–93 period. The results suggest that both public and private investment spending contribute to economic growth. Overall central government consumption expenditures, on the other hand, are found to have a negative effect on private investment and growth. Finally, public expenditures on education and healthcare are found to have a positive and statistically significant effect on private capital formation and long–term economic growth. From a policy standpoint, the results suggest that indiscriminate cuts in public and private investment spending are likely to be counterproductive in the long run, and more importantly, scarce public expenditures should be channeled to the promotion of new human capital (via primary and secondary education) and the maintenance of existing human capital (through healthcare expenditures).     

排污权交易政策对企业环保行为的传导机制研究

从企业的目标函数和生产函数两个角度出发,分析了排污权交易政策对企业环保行为的影响机理,并讨论了排污权交易政策下企业的环保行为选择。研究发现：排污权交易政策通过影响企业的资本要素分配,从而影响企业环境资源的使用成本,进而影响企业的生产和环保行为决策;在排污权交易政策的作用下,企业主要采取不同的污染治理投资策略来满足该政策的规制。基于此,政府应制定配套政策和措施,引导企业沿着“政策遵从—环保投资策略—新环保技术采纳”的行为选择路径进行行为决策,以实现排污权交易政策的目标。     

Training policies and economic growth in an evolutionary world

The role of training and human capital accumulation as a source of innovation and growth is studied within an evolutionary microsimulation model. Firms within the model learn about technology through radical/incremental innovation and imitation. General human capital increases the probability of innovation whereas specific human capital increases technical efficiency. Firms endogenously determine the level of investment in fixed and current assets, R&D activities, and education and training. Human capital accumulation through investment in education and training is shown to be a source of economic growth even though firms tend to under-invest in these activities because they cannot fully recoup training costs when workers quit. The paper investigates the effects of various training policies on macro-performance. The first policy is to subsidise all education and training activities. The second policy requires firms to spend a certain percentage of the wage bill on training activities. In the third case, the government subsidises training activities if the firm hires unemployed people, and pays the social security contributions for 1 year. We experiment with these policies because many European countries adopt similar policies to cure the unemployment problem and to enhance economic growth. By running 101 experiments for each policy, increasing the parameter value step by step, we are able to test the impact of training policies on macro-economic performance (manufacturing growth rates, unemployment, etc.), and to estimate policy elasticities through econometric techniques. The results suggest that some subsidy policies are effective in improving the long-run macro-performance while a minimum requirement to train set upon firms is not.     

农业龙头企业家人力资本投资的二维研究

农业龙头企业家在城乡统筹发展中扮演着重要角色,农业龙头企业家的技术层面及制度层面的人力资本表明,决定龙头企业家人力资本投资可分为技术维度与关系维度两个维度,企业家人力资本投资的二维组合构成了不同的企业家人力资本模式,提高龙头企业家人力资本要求从营造技术环境与制度环境入手探寻出路.     

创业团队异质性对创业绩效的影响：团队治理的中介作用

借鉴结构—行为—绩效（SCP）模型，构建创业团队异质性—团队治理—创业绩效的研究框架，从人力资本理论、交易费用理论视角对三者之间的作用机理进行探讨和检验。结果表明，创业团队经验异质性与创业绩效之间显著正相关；创业团队经验异质性水平越高，越倾向于选择契约治理模式；契约治理在创业团队经验异质性与创业绩效之间起部分中介作用。实践中，在组建创业团队时要有意识地保持成员在知识技能、专业职能等经验方面的多样化和互补性，从而获得成长所需人力资本和社会资本。同时，需要在团队运作过程中采取与之相适应的治理模式，以制约由此产生的行为不一致甚至冲突，节约沟通协调成本，提高创业企业绩效。     

基于双重委托-代理的科研团队成员知识创新激励机制研究

采用双重委托-代理关系模型研究科研团队成员知识创新激励机制,强化主体创新参与意识和知识贡献精神。在团队知识创新个体成员角色划分的基础上,论述团队知识创新中的双重委托-代理关系,进而分析双重关系中的知识创新激励机制,并提出基于人力资本价值差异的激励措施。团队层面的委托-代理关系表明,个体成员的拟线性效用令有效努力水平与其收益独立分配,符合科斯定理的“行动有效,与利益分配无关”的思想;个体层面的委托-代理关系分析表明,实施基于人力资本价值的差异化激励合约,其数值模拟和参数分析结果验证了知识贡献者的产出份额、努力程度以及确定性等价收入明显得到优化。     

政府公共资本投资的长期经济增长效应

本文首先建立一个包含政府公共资本投资的两部门内生增长模型,并把公共资本投资分为政府物质资本投资和人力资本投资,从而对公共资本投资的长期经济增长效应进行理论分析。结论是,两种形式的公共资本投资对长期经济增长都可能具有正效应也可能具有负效应,取决于民间经济主体消费跨时替代弹性大小。其次,我们利用向量自回归分析框架,对我国1978—2004年间公共资本投资对长期经济增长的影响作实证分析。结论是,我国两种形式的公共资本投资与经济增长之间存在着长期均衡关系,其中政府公共物质资本投资对长期经济增长的正影响更为显著,而政府公共人力资本投资对长期经济增长的正影响较小,且在短期内不利于经济增长。这一结论对我国今后科学制定财政政策和选择公共投资领域都具有重要意义。     

财政政策影响区域经济增长的实证研究——以西部大开发投资政策为例

基于中国省区水平上的面板数据,借鉴Kiel处理面板数据的方法,对西部大开发的物质资本和人力资本投资政策进行评估,结果表明:西部大开发的物质资本投入虽然促进了西部地区经济增长的速度,但是该政策并没有缩小东西部地区经济增长的差距,西部地区的经济增长仍然落后于东部地区的经济增长。西部大开发的人力资本投资政策并没有显示出其对西部地区经济增长的作用。     

Intertemporal Emission Permits Trading Under Uncertainty and Irreversibility

This paper analyzes the effect of emission permit banking on clean technology investment and abatement under conditions where the stringency of the future cap is uncertain. We examine the problem of heterogeneous firms minimizing the cost of intertemporal emission control in the presence of stochastic future pollution standards and emission permits that are tradable across firms and through time. A firm can invest in clean capital (an improved pollution abatement technology) to reduce its abatement cost. We consider two possibilities: that investment is reversible or irreversible. Uncertainty is captured within a two period model: only the current period cap is known. We show that if banking is positive and marginal abatement costs are sufficiently convex, there will be more abatement and investment in clean technology under uncertainty than there would be under certainty and no banking. These results are at odds with the common belief that uncertainty on future environmental policy is a barrier to investment in clean capital. Moreover, under uncertainty and irreversibility, we find that there are cases where banking enables firms to invest more in clean capital.     

西部地区人力资本投资与知识化发展

人力资本投资在推动知识化发展的过程中存在自增强机制，通过促进人力资本保值增值，进行人力资源合理配置，改善配置环境和配置政策、完善配套措施，有助于充分发挥这一机制的功能，从而实现西部地区知识化发展。     

创业企业高管团队特征对风投机构投资策略的影响——制度环境与机构专长的双重调节效应

高管团队作为创业企业的掌舵者，是风投机构制定投资策略的重要信号机制。因此，基于高阶理论，探究创业企业高管团队特征对风投机构投资策略的影响机制，进而剖析制度环境与风投机构行业专长对上述影响的调节机制，得出以下结论：①对于平均年龄较低、受教育水平较高、政治关系较强以及社会关系较强的创业企业高管团队而言，风投机构倾向于采取分阶段投资与联合投资策略；②良好的制度环境能够降低投资成本，帮助风投机构优化价值服务质量，弱化创业企业高管团队特征对风投机构分阶段投资与联合投资的影响；③较高的行业专长意味风投具有较完善的监督机制与丰富的资源网络，能够降低创业企业高管团队特征对风投机构分阶段投资与联合投资的影响。     

创业企业高管团队特征对风投机构投资策略的影响——制度环境与机构专长的双重调节效应

高管团队作为创业企业的掌舵者,是风投机构制定投资策略的重要信号机制。因此,基于高阶理论,探究创业企业高管团队特征对风投机构投资策略的影响机制,进而剖析制度环境与风投机构行业专长对上述影响的调节机制,得出以下结论：①对于平均年龄较低、受教育水平较高、政治关系较强以及社会关系较强的创业企业高管团队而言,风投机构倾向于采取分阶段投资与联合投资策略;②良好的制度环境能够降低投资成本,帮助风投机构优化价值服务质量,弱化创业企业高管团队特征对风投机构分阶段投资与联合投资的影响;③较高的行业专长意味风投具有较完善的监督机制与丰富的资源网络,能够降低创业企业高管团队特征对风投机构分阶段投资与联合投资的影响。     

State investment tax incentives: A zero-sum game?

Over the past four decades, state investment tax incentives have proliferated. This emergence of state investment tax credits (ITC) and other investment tax incentives raises two important questions: 1) Are these tax incentives effective in achieving their stated objective, to increase investment within the state?; 2) To the extent these incentives raise investment within the state, how much of this increase is due to investment drawn away from other states?To begin to answer these questions, we construct a detailed panel dataset for 48 states for 20+ years. The dataset contains series on output and capital, their relative prices, and establishment counts. The effects of tax variables on capital formation and establishments are measured by the Jorgensonian user cost of capital that depends in a nonlinear manner on federal and state tax variables. Cross-jurisdictional differences in state investment tax credits and state corporate tax rates entering the user cost, combined with a panel that is long in the time dimension, are key to identifying the effectiveness of state investment incentives.Two models are estimated. The Capital Demand Model is motivated by the first-order condition for a profit-maximizing firm and relates at the state level the capital/output ratio to the relative user cost of capital. The Twin-Counties Model exploits both the spatial breaks (“discontinuities”) in tax policy at state borders and our panel dataset to relate at the county level the relative user cost to the location of manufacturing establishments. Using the Capital Demand Model, we find that own-state capital formation is substantially increased by tax-induced reductions in the own-state price of capital and, more interestingly, substantially decreased by tax-induced reductions in the price of capital in competitive-states. Similarly, using our Twin-Counties Model, we find that county manufacturing establishment counts around state borders are higher on the side of the border with the lower price of capital, but the difference is economically small, suggesting that establishments are much less mobile than overall capital. Extensions of the Capital Demand Model also reveal that state capital tax policy appears to be a zero-sum game among the states in that an equiproportionate increase in own-state and competitive-states user costs tends to have no effect on own-state capital formation.     

人力资本投资结构与经济增长——基于包含教育资本、健康资本的内生增长模型理论研究

文章针对已有的关于人力资本投资的理论研究往往只关注于人力资本投资数量而忽视人力资本投资结构的现状,把教育和健康看作两种资本,分析了人力资本投资结构的具体构成形式。假设人力资本由教育资本和健康资本按照Cobb-Douglas生产技术形式组合生成,在扩展MRW模型的基础上,文章构建了一个内生经济增长模型。分析结论表明人力资本投资结构制约着经济增长,人力资本投资结构和数量(存量)都对经济产生重要影响。     

财政政策的供给效应与经济发展

本文分析了发展中国家公共投资对私人资本积累的动态响应。针对公共资本的拥挤性特征 ,同时考虑财政投资可能引起的风险。在不考虑公共投资风险的分权经济中 ,由于公共资本和私人资本都处于短缺状态 ,企业争夺拥挤性公共资本而扩张私人资本的投资行为虽然使经济超常增长 ,但是存在过度投资和过度拥挤。在集中优化模型中 ,如果考虑到公共投资的风险 ,政府通过税收方式弥补公共投资风险 ,同时将企业投资产生的拥挤效应内部化 ,就能消除企业的过度投资和过度拥挤现象 ,使经济保持合理持续的增长。对中国这样的发展中国家 ,需要重视财政的供给效应 ,在经济起飞初期保证一定数量的政府资本性支出是必要的 ,但随着经济的不断发展和政府资本性支出累积的风险增加 ,财政转型十分必要。