Testing the purchasing power parity in panel data

This paper empirically tests the purchasing power parity (PPP) using panel unit root tests. We employ a battery of panel unit root tests: LM-bar statistic [Testing for unit roots in heterogeneous panels, Working paper, University of Cambridge] is employed to account for serially correlated errors. The statistic proposed by Breitung [Adv. Econom. 15 (2000) 161.] and the KPSS-based statistic of Hadri [Econ. J. 3 (2000) 148.] are also used. In addition, we also employ a SUR estimator to account for possible cross-sectional effect. Data of 45 economies from 1980 to 1999 are used to test the PPP hypothesis. We find that these estimators tend to get supportive results when the data frequency becomes lower, which substantially characterizes the long-run property of the PPP hypothesis.     

中国地区增长是否存在收敛?——随机框架下的再讨论

针对单个面板单位根检验结果具有多种可能含义的问题,本文基于多种面板单位根检验方法以及验证分析(confirmatory analysis)的思路,对改革开放以来我国各地区经济增长的随机收敛特性进行了再检验。结果发现,全国范围内并不存在全局性的随机收敛,借助序贯分类方法,我们发现相对于全国水平的随机收敛只出现在六个省区。进一步检验也未发现存在俱乐部式随机收敛的证据。发展失衡已经成为我国地区经济增长的显著特征,推动地区发展重回均衡应成为经济政策的重要核心。本文研究还表明在对面板单位根检验结果进行解释时需要谨慎。     

The effect of economic freedom on growth revisited: New evidence on causality from a panel of countries 1970–1999

Does economic freedom cause economic growth or does causality run in the reverse direction? And do all the constituent parts of economic freedom exert a causal impact on economic growth or do some freedoms matter more than others? In order to answer these questions, this paper conducts a series of Granger causality tests using panel data for the period 1970–1999. In addition, the paper discusses a number of model specification issues, e.g. lag-length selection and the importance of intervening variables. The results suggest that some (but not all) aspects economic freedom affect economic growth and investment. On the other hand, there is only weak evidence that growth affects economic freedom.     

The Research on the Interreact act Development of Agricultural Modernization and Internationalization in the Area of Eastern Shandong

With the Chinese reform and opening-up, especially when entering the 90s of the 20th century, the internationalization process of China＇s economy is accelerated constantly, and at the same time the modernization of China＇s agriculture is also accelerated constantly. It makes China＇s agriculture modernization under the background of internationalization. Therefore, the integration of China＇s agricultural modernization and internationalization becomes an inevitable choice in developing China＇s modem agriculture. This paper takes the practice of agricultural modernization and internationalization in the area of eastern Shandong province as a basis and uses Panel Data model to analyze the interact relationship between agricultural modernization and internationalization quantificationally with the data of the seven cities in the area of eastern Shandong. The result indicates that agricultural modernization and internationalization have the relationship of interact development.     

Equity markets and growth: Cross-country evidence on timing and outcomes, 1980–1995

The rapid expansion of organized equity exchanges in both emerging and developed markets has prompted policymakers to raise important questions about their macroeconomic impact, yet the need to focus on recent data poses implementation difficulties for econometric studies of dynamic interactions between stock markets and economic performance in individual countries. This paper overcomes some of these difficulties by applying recent developments in the analysis of panels with a small time dimension to estimate vector autoregressions for a set of 47 countries with annual data for 1980–1995. After describing recent theories on the role of stock markets in growth and considering a pure cross-sectional empirical approach, our panel VARs show leading roles for stock market liquidity and the intensity of activity in traditional financial intermediaries on per capita output. The findings underscore the potential gains associated with developing deep and liquid financial markets in an increasingly global economy.     

Production Risk and Productivity Growth: Some Findings for Norwegian Salmon Aquaculture

This paper deals with estimation of primal panel data models of production risk, focusing on measurement of risk properties of inputs and productivity growth. Under production risk one should estimate technical change separately for the deterministic part and risk part of the technology, since risk averse producers will take into account both the mean and variance of output when they rank alternative technologies. For a panel of Norwegian salmon farms fish feed and fish input are found to increase output risk, while labor has a risk-decreasing effect on output. In the analysis of technical change by the first order stochastic dominance criterion the increase in mean output dominates the increase in output risk.     

中国农业经济增长的要素贡献度研究——基于分省非稳定面板的实证分析

本文运用非稳定的分省面板计量方法,对1949—2005年我国农业增长进行了分析。分析结果表明:我国农业发展和农业生产力受政策影响严重,有效的政策措施对于农业生产力的提高有极大的促进作用;农业生产物质投入因素中化肥和农机的使用对产值的贡献度最大;我国农业发展以粗放型为主,某些时间段集约化较高;合理的农村经济制度是我国农业可持续发展前提和保证。     

地方公共物品供给对FDI影响的实证分析

以蒂布特模型的"用脚投票"理论为基础,利用中国30个省市1997～2005年的Panel Data建立Panel Data模型,实证分析各地区的地方公共物品供给对吸引FDI的影响,结果表明,地方公共物品的供给与FDI的吸引呈显著正相关,各地区公共物品供给差异是FDI区域分布差异的一个重要原因.     

混业经营条件下银行集中与效率--基于面板单位根与面板协整分析

基于亚洲国家的面板数据,运用面板单位根与面板协整方法研究混业经营下银行集中与银行效率的关系.理论研究表明银行集中会带来两种相反作用的效应:规模经济和专业化经济,银行集中度提高所带来规模经济上升促进银行效率;相反专业化经济下降损害银行效率.实证分析(1)支持理论所表明的均衡关系,银行效率与银行集中等变量存在协整关系.(2)混业经营条件下,银行集中与银行效率有显著的正相关关系,规模经济效应大于专业化经济效应.因此混业条件下,提高银行效率必须寻求有效途径,加强竞争,适度提高商业银行的集中度.     

环境规制、能源要素价格与绿色创新效率 ——以长江经济带为例

以“共抓大保护、不搞大开发”为导向推动长江经济带发展,需掌握不同环境规制类型与能源要素价格对长江经济带绿色创新的影响。本文运用面板门槛回归模型聚焦讨论能源要素价格与不同环境规制类型对长江经济带绿色创新效率的影响。研究结果表明:命令控制型环境规制和市场激励型环境规制显著抑制了长江经济带绿色创新效率,不支持“波特假说”;自愿型环境规制显著提高了长江经济带绿色创新效率,验证了“波特假说”。环境规制对长江经济带绿色创新存在显著的空间异质性,且在能源要素价格的不同区间下环境规制带来的影响具有明显差异。不同环境规制下的能源要素价格指标函数均不一致,但存在交叉区间,而在主要环境规制类型下能源要素价格对长江经济带绿色创新效率的影响显著为负。控制变量的研究表明,产业结构和产业规模均在一定程度上显著地积极影响长江经济带绿色创新效率,而社会购买力在一定程度削减了长江经济带绿色创新效率。因此,政府需要进一步深化能源价格市场化改革,多角度、差异化实施环境规制行为,共同发挥社会团体对绿色创新的影响。