关于逆序列的极限空间

讨论了当逆系统为一逆序列时其极限空间的性质，证明了任一逆序列的极限空间与任一无穷的子逆序列的极限空间是同胚的。     

多元回归直观评价的研究

对多元统计数据回归处理提出直观评价的方法,解决了回归效果很难直观评价的问题.经过一系列理论推导领先得到并论证了3条评价拟合直观效果的最小二乘参考线的方程式.通过构建和谐企业研究的实例验证并确立了这3条参考线在评价拟合直观效果方面的作用和地位,进而说明多元回归直观评价的实用性.     

基于直接寻找法的电阻抗断层成像

Solution to impedance distribution in electrical impedance tomography （EIT） is an ill-posed nonlinear inverse problem. It is especially difficult to reconstruct an EIT image in the center area of a measured object. Tikhonov regularization with some prior information is a sound regnlarization method for static electrical impedance tomography under the condition that some true impedance distribution information is known a priori. This paper presents a direct search method （DSM） as pretreatment of image reconstruction through which one not only can construct a regularization matrix which may locate in areas of impedance change, but also can obtain an initial impedance distribution more similar to the true impedance distribution, as well as better current modes which can better distinguish the initial distribution and the true distribution. Simulation results indicate that, by using DSM, resolution in the center area of the measured object can be improved significantly.     

Conceptual Mediation Program in Practice: Educational Outcomes from Two Sites

We report on two studies in which high school students who had been exposed to a cognitive training procedure known as the Conceptual Mediation Program (CMP) were compared to students who had not participated within the program. In the first study, based on data from two sites, it was found that 70 CMP students exhibited higher levels of school affect and strategy awareness than 103 comparable students not in the program. In the second study, based on retrospective data from one site, 53 students who had participated within CMP classes were found to exhibit higher levels of attainment on Year 12 South Australian public examination results (effect size of 1.04 on the aggregate). On the Year 12 examination results, the CMP students outperformed both the school and state norms.     

非负矩阵的谱半径配置问题

给定非负矩阵Ａ，求非负对角矩阵Ｘ，使得Ａ＋Ｘ及其各阶顺序主子阵均具有预先指定的谱半径．给出该问题有解的充分必要条件、解的唯一性及算法     

求解一类特征值反问题的新方法

提出了求解一类特征值反问题的新方法 ,应用此法确定了发电机组轴系扭振系统的模型参数。此法力学概念明确 ,易于操作     

逆半群上的一簇群同余导出的半群

对于任意逆半群上的一簇群同余，我们构造了一个半群，分别给出了它是正则的、是纯整的、是群的充要条件。     

关于Moore-Penrose逆的一点注记

用一个元素m把一复C 代数扩充成一个实C 代数A ,运用C - 代数的方法 ,再把A嵌入到A2× 2 中 ,并讨论 A 的一些性质 .     

投影阵在空间解析几何中的应用

欧氏空间Rn到其子空间L的投影阵(或投影变换)在解决空间点与子空间的投影和距离以及某些极值问题时起到很重要的作用.将它应用在空间解析几何中往往使得求垂足等问题变得简洁.本文给出了空间直线l和平面π的投影矩阵pl,pπ,还给出了一个利用投影阵求空间中点到圆的最短距离的例子.     

布尔矩阵广义逆的构造及计数

利用布尔向量加法幂等性给出可逆布尔方阵极小广义逆的构选方法，并由此获得可逆布尔方阵广义逆(g-逆)的计数公式。