建立石油设备自主认证制度必要性探析

技术性壁垒是发达国家进行贸易保护的主要形式。我国API认证企业数量占全球38.7%,2010年以来被取消证书的企业数量却高达全球总取消量的81.3%,损失巨大。分析了我国石油设备企业在API认证方面存在的问题,指出,建立行业认证制度具有可行性。     

新疆经济增长与教育投入、就业问题动态均衡关系研究

科学地研究教育投入、就业与经济增长系统的、动态的关系,不仅可以反映出短期内它们之间的依存关系,而且可以研究长期内它们之间的动态调整机制。本文通过建立误差修整模型,定量地研究它们之间的关系。     

Learning design and technology through social networks for high school students in China

The subject of design and technology was introduced to the curriculum for high schools in China 10 years ago. However, the teaching and learning of this subject have become difficult for both teachers and students because there is a lack of qualified teachers with design background to deliver this subject in a way to stimulate the learning interests of the students. This paper presents a research that is aimed at improving this situation by integrating the teaching and learning of design and technology within a computational environment as part of social networks sites. The purpose is to enable the collaboration among the students and interaction between teachers and students. In this research, a series of investigations were conducted, by following through several taught subjects in design and technology in prominent high schools in China. Based on these investigations, a theoretical framework for web-based design learning and teaching system in the style of social networking is developed, implemented and tested, emphasizing three features of design: innovation, collaboration, and interaction. This framework has been tested among high school students and teachers in a high school in Nanjing. It identified and validated necessary techniques and design features required to make an education-related social networking site effective and affective for the students and teachers. The results of this research indicated that social networking sites have significantly positive values in design education, especially for the collaboration and interaction on the subject of design and technology.     

Exploring the effect of diversification strategy on R&D intensity using quantile regression: evidence from France

This study examines the relationship between firm diversification strategy and R&D intensity for a sample of large French companies between 2008 and 2012. Applying quantile regression, we provide evidence that the choice of diversification affects R&D intensity in a differentiated way. The results indicate that a low level of diversification (below the twentieth quantile) has no significant impact on R&D intensity. Conversely, a moderate or high level of diversification has a negative and significant impact on R&D intensity. These findings suggest that R&D intensity seems to be significantly higher in related-business firms than in unrelated-business firms.     

浅谈新课程标准下数学课堂教学的优化

新课标重在培养学生的自学能力、动手能力及实践探索能力,对教师的教和学生的学都提出了新的要求。为了较好的贯彻新课标的要求,要在课堂教学中下功夫,进行课堂教学优化设计。文章结合具体的教学经验,提出了数学课堂进行教学优化设计的具体方法和措施,以及提高学生主动性和创新性的方法。     

Asymmetric capital structure adjustments: New evidence from dynamic panel threshold models

We develop a dynamic panel threshold model of capital structure to test the dynamic trade-off theory, allowing for asymmetries in firms' adjustments toward target leverage. Our novel estimation approach is able to consistently estimate heterogeneous speeds of adjustment in different regimes as well as to properly test for the threshold effect. We consider several proxies for adjustment costs that affect the asymmetries in capital structure adjustments and find evidence that firms with large financing imbalance (or a deficit), large investment or low earnings volatility adjust faster than those with the opposite characteristics. Firms not only adjust at different rates but also seem to adjust toward heterogeneous leverage targets. Moreover, we document a consistent pattern that firms undertaking quick adjustment are over-levered with a financing deficit and rely heavily on equity issues to make such adjustment.     

西北地区老城内部城市开放空间规划设计

随着我国的"西部大开发战略"的实施,西北地区的城市发展呈加速发展的状态。城市内部用地紧张,城市的公共开放空间缺乏。因此,重构城市的公共开放空间,尝试建立新的城市休憩场所,保障城市开放空间长远的可持续发展。     

试论英语口语主题教学中教师的主导作用

本文试图从第二语言习得认知过程,结合在教学中收集的资料,说明教师在主导以主题为中心的英语口语教学中处理好"传授"与"引导"、"教师讲"与"学生练"、"学生知、能"和"熟巧"等几方面的关系.     

The 1997 Asian Currency Crisis,Financial Linkages,and the Monetary Policy of Japan

The evidence is examined that excessively liberal monetary policy by the Bank of Japan, before and after the financial collapse of Japan in 1992, may have led other East Asian economies into “over‐borrowing” and speculative investments, prior to the currency crisis in 1997–98. The authors test for cointegration and Granger causality between Japanese money supply M1 and the domestic investment of eight East Asian economies and Australia. US and German money supplies are also used as a benchmark. There is strong evidence that there are long‐ and short‐run causal relationships between the Japanese money supply and the domestic investment of the Asian crisis‐inflicted economies prior to 1997.     

利益相关者社会观与商业银行价值提升探讨

银行作为以资金为营运对象的特殊企业,其价值是由一系列的利益相关者投入专用性资本共同创造的,银行只有对其利益相关者的利益进行合理的满足,才能在长期中实现价值提升.本文从利益相关者基础理论出发,结合商业银行的特殊性.分析了商业银行的利益相关者做出的专用性投入对银行价值的影响情况,并在利益相关者视角下对我国商业银行的价值提升提出了建议性思路.