低频干扰电流探头中磁芯材料的选择对其检测性能的影响

本文通过分别对采用铁氧体和铁基非晶合金为磁芯材料的低频干扰电流探头的测试性能的比较分析，讨论了由于铁基非晶合金自身良好的磁性能，使得电流探头在测试低频干扰电流时的测试性能大大提高，从而对于解决目前国内所设计制作的干扰电流探头在测试低频干扰电流时探头灵敏度低、测试不准确这一问题提供了实验依据。     

应用含水率与累积产油量关系评价油田可采储量

用历史累积产油量和含水率的数据做散点图,取其直线段,可算出斜率和截距,由此可定量的计算出原始含水饱和度,可采地质储量及剩余可采储量。通过此新方法的应用,可为油田开发评价提供一种新手段,指导今后的开发工作。     

Is income converging in China?

This study adopts a flexible Fourier unit‐root test proposed by Enders and Lee (2012) to revisit the tendency towards convergence in real per capita income among provinces after economic reform in China. When a data‐generating process is non‐linear, a Fourier series not only allows for the possibility of an unknown number of structural breaks with unknown forms but also allows for the use of a low‐frequency component to capture multiple changes. Contrary to what the linear statistics suggest, our results from a flexible unit‐root test indicate that China's eastern and western regions are converging to their own specific steady states.     

The analysis of ranked data in blocked factorial experiments

A non-parametric method for the analysis of blocked factorial experiments, based on ranking within blocks, is proposed and shown to be equivalent to partitioning Friedman's test statistic into a set of contrasts reflecting polynomial components of the main effects and interaction. A slightly modified version of the procedure is suggested to partially overcome the problem of loss of power to detect one component when the model includes other components. This alternative procedure is shown to be equivalent to applying a standard normal theory analysis of variance to the ranks. The null distributions and power comparisons are investigated using simulation methods, and it is shown that the non-parametric methods are almost as powerful as the analysis of variance. Received: February 1999     

中国银行业存贷利差偏低抑或过高之辨

人们普遍有这样一个认识,为了补贴相对低效率的银行业,中国政府通过利率管制等手段长期维持着一个较高的存贷利差。但研究表明,中国银行业存贷利差在国际范围内其实处于相对较低的水平。本文讨论了利差偏低的原因及影响,并提出了相应的政策建议。     

超临界燃煤机组降低厂用电率的途径探讨

自2×600MW投产以来,姚孟发电有限公司高度重视600MW机组厂用电管理工作,通过借鉴同类机组的节能管理经验,优化主辅机运行方式、充分发挥热力试验的基础指导作用,进行技术改造等,成功的将600MW机组的厂用电率由2011年4.85%降至2012年的4.38%,提升了600MW机组的能耗水平。同时为600MW机组快速降低厂用电运行水平积累了一定的经验。     

提高自动量热仪的测试精度和稳定性

对影响自动量热仪测试精度和可靠性的问题进行分析,并采取切实有效的改进措施以提高了自动量热仪的测试精度和准确度。     

《企业税收实务》考试方式改革的必要性研究

《企业税收实务》课程是管理类专业的一门涵盖了税收理论与实务的重要课程。课程的枯燥及考试手段的单一,使学生只注重于考试的结果,而对学习过程缺乏兴趣。采用支持教考分离的大型题库以及对学生的知识、能力及素质进行多样化多角度的考核,能够促使学生从被动学习变成主动学习,有效地提高教学效果,从而适应新形势下对创新型税务人才的需求。     

China's housing bubble burst?

In this paper, we developed the recursive unit root tests to identify the beginning and end of potential speculative bubbles in the Chinese housing price cycles during 2006–2013 for the 70 major cities of China. The method is best suited for a practical implementation with a time series and delivers a consistent date‐stamping strategy for the origination and termination of multiple bubbles. Simulations demonstrate that the test significantly improves discriminatory power and leads to distinct power gains when multiple bubbles occur. Overall, the results indicate that the speculative housing price bubbles in China are not bursting, and they indicate that the stationarity of the housing price level varies across the different city sizes. Between the cities, approximately one‐fourth of the bubbles have burst up to December 2013, while the first‐tier city bubble may not burst due to the urbanization process.     

How strong are the linkages between real estate and other sectors in China?

International experience points to the critical role of stable property markets in maintaining financial stability. This paper investigates the real and financial linkages between real estate sector and other sectors. The real linkage based on input–output analysis shows that the linkages have strengthened. The financial linkages in terms of credit risk spillovers across sectors are studied by using DAG method and SVAR. We find that that credit risk in the real estate sector has large-scale spillover effects onto other sectors. Consequently, shocks to the property market could have much larger impact on the Chinese economy than suggested by headline figures.