中国房地产市场价格泡沫的检验与成因机理研究

本文使用Pesaran(2007)提出的CIPS面板单位根检验和Pedroni面板协整检验,对我国房地产价格是否存在泡沫等问题进行了研究。检验结果表明,房屋销售价格指数和租赁价格指数序列的单整阶数不相等,并且二者不存在协整关系,因此在样本期间内我国房地产价格存在泡沫。在此基础上,本文对我国房地产价格泡沫产生的原因进行了简要分析,并给出相应的政策建议。     

Has the Feldstein-Horioka puzzle waned? Evidence from time series and dynamic panel data analysis

This objective of this paper is to examine the Feldstein-Harioka puzzle by using both time series analysis that accommodates structural breaks, and dynamic panel error-correction method. Our sample consists of 118 countries over the period 1981–2013. Results from ARDL model suggest that long-run capital is highly mobile in high-income countries (HIC), moderately mobile for both middle- and low-income countries. Our finding of the low long-run saving coefficient for HICs shows that failure to account for a structural break may overstate the long-run saving coefficient. Findings from the pooled mean group estimators suggest that capital is moderately mobile in the middle-income countries, and highly immobile in the high- and low-income countries in the long run. Our findings highlight that ignoring structural break, the type of data (time series/panel), and econometric method used can affect the conclusion about capital mobility. The adjustment coefficient in the time series analysis is comparatively higher than the panel data analysis. We also test whether country size and openness affect the saving–investment correlation. While the effect of country size on the saving coefficient is mixed, the saving estimate is found to be a function of the degree of openness. We also discuss policy implications of our findings on the current account sustainability.     

江岸西站CIPS后备系统的应用

编组站综合集成自动化系统（CIPS）是实现决策、优化、管理、调度、控制一体化的编组站管理系统,其后备系统作为CIPS系统的精简版,在CIPS主系统建成前,在职工培训、系统检验和功能完善等方面起着重要作用。以江岸西编组站为例,对CIPS后备系统的应用进行全面介绍与分析,阐述建立CIPS后备系统的意义。