南疆铁路沿线地区城市化与城市生态环境评价研究

城市化与城市生态环境之间存在着一定的关系.近年来,特别是南疆铁路西延工程全线贯通并投入正式营运以后,铁路对穿越城镇并铁路沿线周边城镇的发展带来了很好的机遇,促进了该区域的经济的发展及城镇化,同时该区域的城镇生态环境也发生了很大的变化.本文在南疆铁路沿线四个城市的2000、2006、2008年统计资料的基础上,首先运用综合评价方法对南疆四城市的城市化水平进行了综合评价,然后分析了南疆四个城市的城市生态环境情况,最后对城镇化与城市生态环境之间的关系进行了分析.结果表明,2000年以来,南疆铁路沿线四城市的城市化水平相对于2000年具有上升趋势.库尔勒市的生态环境水平与城市化水平之间有协调发展特征,但其它三个城市的生态环境水平与城市化水平之间存在不协调发展情况.因此,必须加强阿克苏市、阿图什市、喀什市的城市生态环境的保护工作以促进城市生态环境与城市化水平的协调发展.     

Dynamic linkages between the center and periphery in international stock markets

This paper examines the dynamic linkages between the equity market of US representing the center and emerging markets using the Granger-causality test. The findings show that causality runs from the S&P500 to the stock prices of the 15 emerging markets but not vice versa.     

Professors in the Boardroom and Their Impact on Corporate Governance and Firm Performance

We find that companies with directors from academia are associated with higher performance. This relation is driven by professors without administrative positions. We also find that academic directors play an important governance role through their advising and monitoring functions. Specifically, our results show that the presence of academic directors is associated with greater acquisition performance, a higher number of patents and citations, higher stock price informativeness, lower discretionary accruals, lower chief executive officer (CEO) compensation, and higher CEO forced turnover‐performance sensitivity. Overall, our results indicate that academic directors are valuable advisors and effective monitors and firms benefit from having academic directors.     

ICT-specific technological progress in the United Kingdom

This paper analyses the impact of rapid technological change in the information and communications technology (ICT) sector on economic growth in the United Kingdom. We find that technological progress specific to the ICT sector accounts for around 20–30% of long-run labor productivity growth. We demonstrate that a permanent increase in the growth rate of ICT-specific technological progress will increase the investment expenditure share of GDP but lower the aggregate depreciation rate, while an increase in the return to investment in ICT will increase both the expenditure share and the depreciation rate.     

Financial market integration and the value of global diversification: Evidence for US acquirers in cross-border mergers and acquisitions

In contrast to the previously documented cross-border discount, we find that there is positive cross-border effect for US acquirers during late 1990s and early 2000s. This is especially particular the case for those that acquire/merge with targets from segmented financial markets where acquirers experience significantly higher positive abnormal returns than those that acquire targets from integrated financial markets. Furthermore, firms acquiring segmented-market targets are also characterized by significantly higher post-merger operating performance improvement. The results indicate that the observed positive cross-border effect is mainly due to the increase in the number of transactions involving targets from segmented markets, in which the average firm experience significant financial constraints. We contend that value is created by a combination of firms with different financial market integration status, in which funds are provided to high cost firms. The finding that the value creation is even higher within the group of acquirers with a lower cost of capital provides additional support for our conjecture.     

Trade liberalization and unemployment: Theory and evidence from India

A widely held view among the public is that trade liberalization increases unemployment. Using state and industry-level unemployment and trade protection data from India, we find no evidence of any unemployment increasing effect of trade reforms. In fact, our state-level analysis reveals that urban unemployment declines with trade liberalization in states with flexible labor markets and larger employment shares in net exporter industries. Moreover, our industry-level analysis indicates that workers in industries experiencing greater reductions in trade protection were less likely to become unemployed, especially in net export industries. Our results can be explained within a theoretical framework incorporating trade and search-generated unemployment and some institutional features of the Indian economy.     

Stock returns,inflation and interest rates in the United Kingdom

The Fisherian theory of interest asserts that a fully perceived change in inflation would be reflected in nominal interest rates and stock returns in the same direction in the long run. This paper examines the Fisherian hypothesis of asset returns using alternative techniques of linear regression, and vector error correction models to examine the nature of the relationship between stock returns and inflation in the UK. Consistent with the Fisherian hypothesis, empirical evidence in the linear regression model suggests a positive and statistically significant relationship between stock returns and inflation, which regards common stock as a good hedge against inflation. The results based on the unit root and cointegration tests indicate a long-run reliable relationship between price levels, share prices, and interest rates which could be interpreted as the long-run determinants of stock returns. The findings also suggest a bidirectional relationship between stock returns and inflation. The evidence of a significant Fisher effect is robust across model specifications.     

Credit Constraints,Technology Choice and Exports: A Firm‐level Study for Latin American Countries

In this paper, constraints on technology choice and credit access are introduced into a firm‐level trade model in a dynamic setting in order to explain factors that limit benefits to a firm from trade liberalization. Theoretical analysis shows that firms face credit constraints depending on their initial productivity and the cost of credit. As a result, credit‐constrained firms may not be able to cross the minimum productivity threshold needed to enter and compete in a foreign market. Empirical analysis using firm‐level panel data for six Latin American countries confirms that financial constraints negatively influence firms' export and investment decisions.     

η-Pseudolinearity

The notion of η-pseudolinearity is introduced. First, some characterizations of an η-pseudolinear function are obtained. Then characterizations of the solution set of an η-pseudolinear program are derived. The paper generalizes various results on pseudolinear functions and programs.     

Asymmetric benchmarking in bank credit rating

This study proposes an information asymmetry hypothesis to examine why bank credit ratings vary among countries even when bank financial ratios remain constant. Countries are divided among those with low and high information asymmetry. The former include high-income countries, those in North America and West Europe regions, and those with strong institutional environment quality, whereas the latter group possess the opposite characteristics. This study hypothesizes that the influences of financial ratios on ratings are enhanced in low information asymmetry countries but reduced in countries with high information asymmetry. The sample includes the long-term credit ratings issued by Standard and Poor's from 86 countries during 2002-2008. The estimated results show that the effects of financial ratios on ratings are significantly affected by information asymmetries. Countries wishing to improve the credit ratings of their banks thus should reduce information asymmetry.