the research object of this dissertation is the listed corporation . the methods of correlation analysis and variance analysis are employed in this dissertation to study the relationship between corporate governance and diversification 本论文以上市公司为研究对象,运用相关分析和方差分析方法,研究上市公司治理结构和多元化战略之间的关系。
the analytical method of correlation dimensions will show its unique advantage in the aspect of condition monitoring and fault diagnosis of the equipment, especially the way of non-linear fault diagnosis, demonstrating its wide application prospect 研究结果表明,关联维数分析方法在设备状态监测与故障诊断中,尤其是在非线性系统的故障诊断中显示出其独特的优势,具有较为广阔的应用前景。
compared with the pressure hydrophone, vector transducer can provide both the information about pressure ( scalar quantity ) and particle velocity ( vector quantity ) of the sound field, which offers more possibilities for signal processing . so vector transducer and its signal processing have attracted the attention of researchers both native and foreign . in this thesis, a method of correlation equations for pressure gradient transducer is presented, and the estimation of multi-signal parameters with single vector transducer is given 与传统的声压水听器相比,矢量水听器既能获得声场中的声压这一标量信息,又能获得声场中质点振速这一矢量信息,这为其信号处理带来更大的空间,因此矢量水听器及其相应的联合信息处理技术日益成为国内外科技工作者们研究的热点。
the article investigates shanghai list companies from 1998 year to 2002 year's data, and gets two models by the methods of correlation and step-wise regression . by comparing two models " s response to good and bad earnings announcement in the difference level of market, the conclusion of this article is : ( 1 ) the price response to bad and good earnings announcement is asymmetry; ( 2 ) the price response to bad and good earnings announcement changes as the relative level of the market changes; ( 3 ) the notion that as the market rises, the asymmetry in the response to good and bad news becomes relatively more pronounced for glamour stocks is not applied to our security market 通过对1998年至2002年所有沪市上市公司五年的数据进行实证分析,运用相关性分析、多元逐步回归等方法,得到两个多元回归模型,对比两个模型在不同市场状态下的反应,得到了以下结论:(1)市场在年报好坏盈余信息的公布情况方面反应是不对称的;(2)市场对好坏盈利信息反应的不对称性的程度主要依赖于整个市场所处的状态;(3)随着市场不断好转,魅力股对坏盈利信息的反应并没有变得更强烈,同时对好坏盈利信息的反应差别也不大。
on the basis of gap's temporal-spatial characteristics in and around source area before an earthquake, we propose a method to estimate characteristic parameters ( characteristic distance and time ) in the region-time-length ( rtl ) algorithm and introduce the method of correlation coefficient developed by some authors in 2006 to determine the characteristic parameters 摘要根据地震前震源及周围地区出现的空区的时空特征,提出了一种估计“区域时间长度”算法中特征参数(特征距离和特征时间)的方法,并介绍了2006年一些学者提出的用相关系数估计特征参数的方法。