要素结构与技术进步方向——来自中国城市“撤县设区”的证据

本文基于1997—2010年267个地级及以上城市市辖区面板数据,运用标准化供给面系统方法测算了市级层面的技术进步方向,并借助“撤县设区”这一自然实验,利用工具变量法实证检验了要素结构变动对技术进步方向的影响,研究发现：（1)“撤县设区”使得资本—劳动比上升,进而导致技术进步方向偏向于资本,符合偏向型技术进步的“弱诱导偏向型假说”;（2)“撤县设区”对资本偏向型技术进步的影响是有条件的,主要限于资本—劳动替代弹性大于1即资本—劳动呈替代关系的地区;（3)相比于中西部地区,东部地区资本要素更为丰富,因而“撤县设区”显著提高了东部地区的资本—劳动比,使其技术进步方向偏向资本。     

基于蚁群聚类算法的绿色内陆港宏观布局研究

为解决绿色理念指导下的内陆港宏观布局问题,考虑了备选城市的环境友好性对内陆港发展空间持续性的影响,首先分析影响内陆港宏观布局的因素,之后选取具有较强鲁棒性、采用正反馈原理的蚁群聚类方法,从经济发展水平、多式联运能力、政策环境、发展空间持续性等角度,构建绿色内陆港布局模型.最后以天津港为对象的实例分析表明,蚁群聚类模型对于解决环境友好型内陆港布局问题是有效的,结果基本符合实际情况.该研究为构建绿色内陆运输网络、实现绿色物流提供了科学方法.     

The impacts of SOX and SEC investigation on the corporate governance of option backdating firms

This study investigates the combined impact of the Sarbanes-Oxley Act of 2002 (SOX) and the subsequent related Securities and Exchange Commission's (SEC) initiatives on the corporate governance characteristics of firms that had historically backdated stock options. Our results show that backdating firms had both weaker board-level and committee-level corporate governance characteristics than control firms in the pre-SOX period. In contrast, backdating firms dress up their board-level governance to meet regulatory requirements but still feature weaker committee-level corporate governance in the post-SOX era.     

区域产业结构与就业结构的比较及启示——基于重庆市万州区和涪陵区的分析

产业结构和就业结构的变化反映出区域经济发展的资源分配结构及其发展进程和水平.分析发现,万州区与涪陵区在产业结构上都存在第一产业所占比重与其吸纳劳动力的比重不一致的现象,其中,涪陵区第二产业比重较大但吸纳劳动力能力较弱,而万州区第三产业吸纳劳动力能力要弱于涪陵区.两地应大力发展第三产业以改善就业结构,充分吸纳从第一产业转移出来的劳动力.     

增强科技意识创新科技管理

文章系统总结了扎赉诺尔煤业公司供暖公司依靠科技进步提高企业素质的经验。     

Using patent analysis to establish technological position: Two different strategic approaches

Discussions on business strategy formation in the past 50 years can be separated into two categories: the inside-out and the outside-in approach. Technology is a critical factor when manager formulate their business strategy, and patents have served as an important indicator of technology. A patent portfolio can be used to understand the capabilities of a firm, as an inside resource pattern; and the patent citation of firms can be used to find the relationship of a firm, as an outside dependency. This study uses patent information to establish an effective model for the technological position of business methods. The 5 by 6 matrix was generated and four situations between firms were induced. Researchers and managers can use that matrix and situations to recognize the real competitors or cooperators, and formulate the technological strategies which include competition, cooperation, or complementary cooperation.     

Do Borrowers Make Rational Choices on Points and Refinancing?

Utilizing individual mortgage data, we find that borrowers with points are less likely to refinance, and when they do, they take longer to refinance. This finding supports the separating equilibrium prediction of earlier studies that borrowers with higher (lower) refinancing costs self‐select into mortgages with higher‐point/lower‐rate (lower‐point/higher‐rate) loans.     

The asymmetric information and price manipulation in stock market

The interaction between asymmetrically informed traders has been mostly investigated in theoretical frameworks. Not only there are relatively few empirical studies but, if any, the mostly focus on cross-sectional analysis and use very short samples. In this study, we blend theoretic with empirical, and propose a new signalling system of turning points in the economy to examine the extent of volatility of these markets relative to their tranquil periods. The signalling system proposed here is based on the Markov-switching model. Differing from the existing literatures, the study employs three phases and time-varying transition probability, and captures the states of volatility. After examining the causality between high volatility and foreign portfolio investment (FPI) by using moving average and generalized autoregressive conditional heteroskedasticity, the portfolio's profitability of FPI and individual investors in different periods are compared. Finally, the investigation of FPI's leading effect is studied.     

债券组合Theta对冲的实证研究

本文推导了Diebold-Li广义久期向量模型下的Theta,并利用上交所国债数据进行实证研究。结果表明,在久期匹配的条件下引入凸度匹配或Theta匹配均可减小风险对冲误差,且引入凸度匹配时风险对冲误差更小。     

不良贷款约束下的中国银行业效率——基于方向性距离函数的实证分析

运用方向性距离函数方法测度中国银行业2000～2006年包含不良贷款的技术效率及规模效率得出,在平均意义上,考虑不良贷款后,国有和股份制银行在生产前沿上的数目增多,中国银行业的效率水平提高并且效率值变化近似于V字型;在最大化减少不良贷款和投入同时增加好产出时得到的效率值较高;中国银行业处于规模报酬递减区域,但从长远看,规模效率有上升的趋势。