Is Private R & D Spending Sensitive to Its Price? Empirical Evidence on Panel Data for Italy

In this paper empirical evidence is presented on theelasticity of private R & D spending on its price. Acensored panel-data regression model with random effectsis applied to a balanced panel of 726 Italian firms overthe 1992–1997 period. Implied estimates point out thatItalian firms' response to policy measures (including taxcredits), aimed at reducing the user cost of R & D capital,is likely to be substantial (1.50–1.77). Furthermore, wealso find that the elasticity of R & D spending is higherin recession (2.01) than in expansion (0.87).     

Does too much government spending depress the economic development of transition economies? Evidences from dynamic panel threshold analysis

This paper investigates the relationship between government size and economic growth and determines the optimal level of government spending to maximize economic growth. The paper applies a dynamic panel data analysis based upon a threshold model to test the threshold effect of government spending in 26 transition economies over the period spanning 1993–2016. According to the analysis results, government expenditures have a threshold effect on economic growth, and there is a non-linear relationship depicted as an Armey curve in these transition economies. The findings indicate that a government size above the threshold government spending level adversely affects economic growth, while a government size below the threshold level has a positive effect. Furthermore, there is a statistically significant relationship between the two variables above and below that optimal level, even if we divide the sample into developed and developing countries. Our findings suggest that governments in transition economies should consider optimal government size at around the estimated threshold level to support sustainable economic growth.     

旅游地阻力面理论初探--五大连池风景名胜区为例

以生态学中的阻力面理论为依托，创建了符合旅游规划需要的旅游地阻力面理论模型，构建了旅游景点、景区、旅游地、旅游区域之间联系的阻力层次体系，建立了旅游空间联系关系的影响因子系统，提出了旅游地阻力面理论在指导区域、地方及旅游区规划中的作用，并以国家级风景名胜区五大连池为例展示了旅游地阻力面理论在地方旅游开发建设实践中的现实作用。     

中国大陆上市公司的时空现状及其可持续发展研究

首先阐述了中国大陆证券市场的发展历史，分析了中国大陆上市公司的发展态势。从中国大陆各省区(省、直辖市、自治区)、六大经济区、三大经济地带入手，探讨了中国大陆上市公司的空间分布格局及其分布重心的移动轨迹，指出中国大陆上市公司的空间分布格局是由区域上市公司数量、土地面积、经济发展水平和产业结构发展状况等诸多因素所造成的。最后对上市公司的可持续发展进行了研究，旨在为中国大陆区域上市公司的相对均衡发展和可持续发展提供科学依据，以促进中国证券市场和国民经济的持续发展。     

景区环境控制指标体系研究--以三峡库区为例

根据景区环境控制的原则,本文从生态环境、空间环境、设施环境以及社会环境四个方面建立起三峡库区景区环境控制指标体系,并以重庆库区为例对各项指标的控制标准进行了较为详细的论述.     

点轴系统理论及其拓展与应用:一个文献述评

点轴系统理论自1984年提出以来,随着该理论在科学基础、形成机理、过程模式等方面的不断完善,已初步形成了一个完整、系统的理论体系.在此基础上衍生的"T"型空间开发战略广泛应用于国土开发和经济布局,成效显著.自该理论提出以来,在理论拓展和实践应用中涌现出一批成果,点轴系统理论的研究与应用不断深化.     

汇率对产业内贸易的传导和冲击效应——基于中国东盟自由贸易区的分析

本文以中国与东盟六国18类产品的产业内贸易的月度面板数据作为分析基础，通过分析汇率与产业内贸易的传导关系、中国与东盟六国产业内贸易特点，并且建立产业内贸易指数与汇率的VAk模型．对我国的汇率对产业内贸易的冲击作用和动态关系做实证分析。研究发现：一是无论是短期或长期．汇率升值对绝大多数初级产品的产业内贸易是不利的，但在短期内它有助于提升大多数工业制品的产业内贸易水平．长期内对工业制品的产业内贸易冲击效应是分化的。二是汇率升值后长期内对不同劳动密集型产品的产业内贸易发展是一样的。三是无论是短期还是长期，初级产品的产业内贸易对汇率冲击的反应相当微弱．工业制品反应相对较强。     

市场化与经济增长:一个短期的因果关系检验

利用我国1999-2002年省际区域的面板数据,运用面板数据Granger因果关系检验技术,对我国市场化水平与经济增长的关联度进行了实证分析.得出市场化是经济增长的Granger原因,但是经济增长不是市场化的Granger原因的结论.     

Regional Unemployment in Transitional China: A Theoretical and Empirical Analysis

The purpose of this paper is to explain the pattern of regional unemployment in transitional China. A model is developed to explore how urban unemployment in the provinces is influenced by peasants' wages, formal sector wages, and the size of the formal sector. Evidence from panel data suggests that a significant indicator of high unemployment rates is greater Urban–Rural Income Inequality within the province. The hypothesis is that the urban–rural income gap produces migration, and more rural migrants substitute for urban workers, causing further urban unemployment.Since the economic reforms began in 1978, the non-state owned enterprises have been carrying an increasing weight in the economy, and they have contributed significantly to the rapid economic growth of China. Empirical evidence shows that economic reforms have reduced unemployment. The provinces that are still heavily dependent on the state sector are therefore more likely to experience higher unemployment.     

基于Oracle9i的物流空间信息数据库的一种设计与实现方法

通过Oracle Spatial组件的支持，我们可以在物流系统中实现时空间信息的解决方案。本文探讨了物流空间信息需求，介绍了用Oracle spatial建立物流空间数据库的方法，Oracle可以作为物流空间信息管理分析的一个较好的解决方案。