改革开放以来湖南城乡居民收入两极分化演变研究

利用1980--2010年湖南居民收入的时间序列数据,对湖南城乡居民收入两极分化的演进及其影响因素进行了实证分析,结论表明：1980--2010年,湖南城乡居民收入差距与收入两极分化在震荡中加大,其速度快于全国水平。基于分析,提出了相应的政策建议。     

A Polarization Index for Overlapping Groups

The well‐known index of income bipolarization proposed by Wolfson (1994) requires two groups to be split according to the median income and, therefore, to be non‐overlapping. The aim of this paper is to propose a new polarization index in the spirit of the Wolfson index. It allows for any possible partition of the population in two or more (also overlapping) groups. The new index maintains the simplicity and immediate comprehension of the Wolfson index, though being much more flexible. An application is then provided for German and Italian income data.     

The transactions demand for money in the presence of currency substitution: evidence from Vietnam

Currency substitution – the use of foreign money to finance transactions between domestic residents – is widespread in low income and transition economies. Traditionally, however, empirical models of the demand for money tend to concentrate on the portfolio motive for holding foreign currency, while maintaining the assumption that the income elasticity of demand for domestic money is invariant to the degree of currency substitution. A simple re-specification of the demand for money is offered which more accurately reflects the process of currency substitution by allowing for a variable income elasticity of demand for domestic money. This specification is estimated for Vietnam in the 1990s. Using a standard cointegration framework evidence is found for currency substitution only in the long-run but well-defined wealth effects operating in the short-run.     

INTRANATIONAL AND INTERNATIONAL KNOWLEDGE FLOWS: EFFECTS ON THE FORMAL AND INFORMAL SECTORS

This article studies the effects of international and intranational knowledge flows. Contributions include comparing the effects of knowledge flows on the formal and informal sectors and determining multilateral spatial spillovers of innovation. Results show that formal entrepreneurs respect intranational intellectual property rights, but benefit from international spillovers, especially from patents granted. In contrast, informal entrepreneurs somewhat respect intranational patents granted, but not patent applications and citations. International spillovers to the informal sector are mainly from patents granted. Spillover magnitudes are greater internationally than intranationally, and greater in the informal sector than the formal sector (except for trademarks). (JEL O33, L26, K42)     

居民资产、财富效应与我国城镇居民消费

现代消费理论认为财富是影响居民消费的重要因素,并且各种财富形式对消费水平影响不同.对我国居民资产财富效应的实证研究表明,股票资产在长期对居民消费有负向影响.财富效应微弱,而房产财富对居民消费的正向效应比较明显,刺激消费作用较强.当前财富效应的产生与我国股市发展不稳定及房地产市场的发展特性相关,而个人可支配收入和储蓄仍是影响我国居民消费支出的主要因素.     

Does intellectual monopoly stimulate or stifle innovation?

This study develops an R&D-based growth model with vertical and horizontal innovation to shed some light on the current debate on whether patent protection stimulates or stifles innovation. We analyze the effects of patent protection in the form of blocking patents. We show that patent protection changes the direction of innovation by having asymmetric effects on vertical innovation (i.e., quality improvement) and horizontal innovation (i.e., variety expansion). Calibrating the model and simulating transition dynamics, we find that strengthening the effect of blocking patents stifles vertical innovation and decreases economic growth but increases social welfare due to an increase in horizontal innovation. In light of this finding, we argue that in order to properly analyze the growth and welfare implications of patents, it is important to consider their often neglected compositional effects on vertical and horizontal innovation.     

银行业金融产品创新：现状、效应与策略

对于本次危机的根源,国内外学者比较一致的观点是,金融创新过度而缺乏相应的风险防范机制。在中国金融业全面开放创新的背景下,如何借鉴危机前后国外银行业金融创新的经验和教训,促进中国银行业金融创新更好、更快的发展,具有重要的理论和实践意义。本文首先基于利率、汇率市场化进程加快,城镇居民收入水平提高,金融脱媒以及银行资本约束等动因视角详细分析了我国银行业金融产品创新的现状,在此基础上,对我国银行业金融创新的积极效应进行分析,如缓解期限错配现象、加强风险管理能力,提高资本充足率、加强市场约束,增加中间业务收入,推动利率和汇率市场化等。最后,本文提出了进一步提升我国银行业金融产品创新的策略,其中包括：金融创新必须注重风险防范、实施混业经营,促进金融创新、实施金融创新由外力推动向内部驱动转变等。     

Back to Basics: Remittances in the Keynesian Macroeconomic Framework

This paper examines a remittance multiplier based on the short-run Keynesian equilibrium approach and shows how income may be affected by remittance inflows. We explore this through the equilibrium in the goods and money markets, where remittances can affect both consumption and the demand for real money balances. We present this simple theoretical model utilizing a standard Keynesian framework. The short-run Keynesian equilibrium approach provides insight into how remittances affect output and income, and its potential multiplier effects. The model used is indicative of a positive relationship between the marginal propensity to consume out of remittances and the multiplier. The framework also shows that remittances will have a greater impact if its marginal propensity to consume is greater than that for standard disposable income.     

谁在抑制居民的消费需求?——基于国民收入分配格局的分析

经济转型以来中国国民收入分配格局发生了巨大变化,国民收入分配从向居民倾斜逐步演变成向政府倾斜.分析1992-2007年16年间我国国民收入在企业、政府和居民三部门之间分配格局的变化,可以发现:居民部门在全国可支配收入中的占比1996年达到最高,此后逐年降低,截至2007年,总共下降了8.6个百分点.在初次分配阶段,居民部门下降了5.41个百分点,而企业和政府部门则分别上升了3.89个和1.52个百分点;在再分配阶段,居民部门下降了8.60个百分点,而政府和企业部门则分别上升了3.03和5.57个百分点.在初次分配中,居民部门劳动者报酬和财产收入占比的下降,分别使其在国民收入中的占比下降了5.99个和3.21个百分点.因此,应该适当调整中国国民收入分配格局,提高居民收入比重,并将国民收入分配格局的调整与各经济主体内部收入分配结构的调节有机结合.     

我国收入不平等、金融发展和消费需求波动的实证研究:1978～2001

本文考察了收入不平等与总消费需求变动之间的联系,在高收入地区,不平等程度越大似乎消费需求波动越大,而在低收入地区,收入不平等越大,消费需求波动反而较小。本文找到证据表明金融发展水平能有助于解释为什么收入分配在高收入和低收入地区中影响消费需求的短期波动是不同的,本文的政策含义是,加快低收入地区如中西部的经济和金融发展步伐,加大金融发展相机调整的力度。     

Closing the Technology Gap?

This paper focuses on the dimensions shaping the dynamics of technology. We present a model where the knowledge stock of a country grows over time as a function of three main factors: innovation intensity, technological infrastructures, and human capital. The latter two variables determine the absorptive capacity of a country as well as its innovative ability. We then carry out an empirical analysis that investigates the dynamics of technology in a large sample of economies in the last two‐decade period, and studies its relationships with income per capita growth. The results indicate that the cross‐country distributions of technological infrastructures and human capital have experienced a process of convergence, whereas the innovative intensity is characterized by increasing polarization between rich and poor economies. Thus, while the conditions for catching up have generally improved, the increasing innovation gap represents a major factor behind the observed differences in income per capita.     

产业结构调整的收入分配效应研究--基于1998-2012年中国省际面板数据模型的分析

产业结构调整作为政府实现宏观发展战略目标的重要调控手段,具有显著的收入分配效应。构建产业结构调整对城乡收入差距影响机理的分析框架,利用中国30个省份1998-2012年的面板数据,运用联立方程模型和内生分布滞后模型,研究产业结构调整的收入分配效应,结果发现：由于产业结构调整与人力资本结构负相关,在即期会强化农村居民在就业市场中的弱势地位,扩大城乡收入差距;在长期,城乡居民根据产业结构调整重塑就业预期,通过调整人力资本投资结构、提升人力资本水平实现职业转换,第5年以后将出现农村居民收入增幅高于城镇居民的格局,形成乡城收入赶超效应,产生缩小城乡收入差距的正面效应。     

Wealth effects on the housing markets: Do market liquidity and market states matter?

This paper analyzes the effect of household wealth (including housing and financial wealth) on housing sales and probes their long-run and short-run dynamic relationships. We further examine the short-run effect of financial wealth on housing sales by employing quantile regressions, restricted upon different liquidity (quantile) levels and up-down housing markets, from which the differences between the early and late stages of an uptrend/downtrend can be respectively exhibited. We find that housing wealth, income, and mortgage rates have long-run influences on housing sales. Looking at the short run, we find that housing sales only respond to housing wealth and mortgage rates. When we distinguish the effects of financial wealth on housing sales in up-down housing markets, we note a positive influence of financial wealth on housing sales in down markets, but not in up markets. Particularly, our results show an impact of housing liquidity on the short-run relationships.     

Medical technology and the production of health care

This article investigates the factors that determine differences across OECD countries in health outcomes, using data on life expectancy at age 65, over the period 1960 to 2007. We estimate a production function where life expectancy depends on health and social spending, lifestyle variables, and medical innovation. Our first set of regressions include a set of observed medical technologies by country. Our second set of regressions proxy technology using a spatial process. This article also tests whether in the long-run countries tend to achieve similar levels of health outcomes. Our results show that health spending has a significant and mild effect on health outcomes, even after controlling for medical innovation. However, its short-run adjustments do not seem to have an impact on health care productivity. Spatial spill overs in life expectancy are significant and point to the existence of interdependence across countries in technology adoption. Furthermore, nations with initial low levels of life expectancy tend to catch up with those with longer-lived populations.     

The Innovation‐R&D Nexus in an Emerging Economy: Evidence from the Indian Manufacturing Sector

While R&D is considered an important input for innovation, its relationship with the output of the innovation process continues to remain enigmatic, especially in developing countries with low levels of domestic research. Using patents and knowledge capital stock as proxies for the output and input of the innovation process, we study their nexus in the emerging economy of India using a large sample of manufacturing firms over the period 2001–2010. Using a specification that addresses the problem of ‘excess zeroes’ in count data, the firm's non‐technical knowledge stock as an additional factor of the success with which R&D transforms into patents, and a linear feedback mechanism that yields consistent estimators, we find that a one unit increase in knowledge capital likely raises expected patent count by only about 4.3% at most. Further, although patenting experience, resource access and knowledge spillovers are strongly significant in explaining patent counts, the magnitude of these effects is marginal at best. In brief, evidence for the knowledge production function is rather weak even in the context of a dynamic developing economy.     

是何因素制约着中国居民消费

居民消费增长相对缓慢给我国经济的持续健康发展带来挑战,扩大居民消费加快形成消费、投资、出口协调驱动经济增长的新局面是我国经济发展到新阶段后的客观要求。本文基于预防性储蓄理论分别从不确定性、收入分配和公共支出三个视角系统地研究中国居民消费的制约因素。研究分析表明,居民谨慎的消费行为、收入分配的不合理,公共支出转型滞后等都严重地制约着我国居民消费的增长,并据此提出相应的政策建议。     

Identifying the Unique Polarization Index: A Mean‐Preserving Axiomatic Approach

In this paper, we propose a new axiomatic approach to identify the unique polarization index from a class of polarization measures proposed by Esteban and Ray. Methodologically, we consider the absolute income or the mean normalized income instead of the logarithm of income, which in our opinion is useful under various circumstances. Accordingly, we propose a set of mean‐preserving axioms so that the obfuscating effects of income scale can be removed. We also discuss some properties of the polarization indices based on different types of income differences.     

Does environmental quality influence health expenditures? Empirical evidence from a panel of selected OECD countries

In this paper we examine the role of environmental quality in determining per capita health expenditures. We take a panel cointegration approach in order to explore the possibility of estimating both short-run and long-run impacts of environmental quality. Our empirical analysis is based on eight OECD countries, namely Austria, Denmark, Iceland, Ireland, Norway, Spain, Switzerland, and the UK for the period 1980-1999. We find that per capita health expenditure, per capita income, carbon monoxide emissions, sulphur oxide emissions and nitrogen oxide emissions are panel cointegrated. While short-run elasticities reveal that income and carbon monoxide emissions exert a statistically significant positive effect on health expenditures, in the long-run in addition to income and carbon monoxide, we find that sulphur oxide emissions have a statistically significant positive impact on health expenditures.     

绿色创新与经济增长动态关系研究——基于VAR模型的实证分析

基于湖北省1993—2018年相关数据,运用VAR模型对绿色创新与经济增长的动态关系进行实证研究,同时将绿色创新分为发明专利授权和实用新型专利授权两个要素。研究发现,经济增长与发明专利授权、实用新型专利授权存在长期协整关系;发明专利授权对经济增长存在“扩散效应”,实用新型专利授权对经济增长先体现“扩散效应”,后体现“挤出效应”,而经济增长对两者均具有“扩散效应”;发明专利授权对经济增长的促进作用明显大于实用新型专利授权对经济增长的促进作用。因此,应积极构建绿色创新与经济增长的长效互动机制;加大绿色创新开发投入,完善绿色创新相关制度;提升绿色创新的投入效率,加速绿色创新成果转化率。     

Determinants and dynamics of migration to OECD countries in a three-dimensional panel framework

This paper investigates the determinants of bilateral immigrant flows to 19 OECD countries between 1998 and 2007 from both advanced and developing origin countries. We pay particular attention to dynamics by including both the lagged migrant flow and the migrant stock to capture partial adjustment and network effects. To correct for the dynamic panel data bias of the fixed effects estimator we use a bootstrap algorithm. Our results indicate that immigrants are primarily attracted by better income opportunities and higher growth rates abroad. Also short-run increases in the host country’s employment rate positively affect migration from both advanced and developing countries. High public services, on the other hand, discourage migration from advanced countries but exert a pull on migration from developing sources, in line with the welfare state hypothesis. Finally, we find evidence for both partial adjustment and the presence of strong network effects. This confirms that both should be considered as crucial elements of the migration model and that a correction for their joint inclusion is required.