Correlation analysis of ordered symmetrically dependent observations and their concomitants of order statistics

Given two jointly observed random vectors Y and Z of the same dimension, let Y be a reordered version of Y and Z the resulting vector of concomitants of order statistics. When X is a covariate of interest, also jointly observed with Y, the authors obtain the joint covariance structure of (X, y, Z) and the related correlation parameters explicitly, under the assumption that the vector (X, Y, Z) is normal and that its joint covariance structure is permutation symmetric. They also discuss extensions to elliptically contoured distributions.     

广义延拓矩阵的奇异值分解

具有广义行或列对称性结构的矩阵（即广义延拓矩阵）的奇异值和奇异向量与原矩阵（母矩阵）的奇异值和奇异向量存在定量关系,从而对于广义延拓矩阵的奇异值分解,可利用母矩阵奇异值分解来实现。这不但可以节省计算量和运算量,而且不影响任何数据的精度。     

教学质量评估的两种方法

文章研究了教学质量评估中两种定量分析的方法:马尔可夫链评估法、奖罚权系数矩阵法,给出了这两种方法的理论依据及实施程序。用该方法对哈尔滨工程大学2002级大学数学(高等数学→线性代数→概率论与数理统计)教学质量进行了分析,指出该方法较之其他教学质量评估法更显合理。     

动态交通分配中一类转换率系统的稳定性

在假设交通很拥挤同时交通的转换率与路径费用成正比的前提下,构建了一个动态的转换率模型.为了获取转换率系统的全局渐近稳定,提出了一个普遍适用的Lyapunov函数方法,与此同时通过线性矩阵不等式方法,得到了保证转换率系统全局渐近稳定的充分条件.     

一类符号模式矩阵嵌套蕴含稳定性的刻划

设A为n阶符号模式矩阵,若存在与A有相同符号模式的实矩阵B及n阶置换矩阵P,使得C=PTBP的各阶顺序主子式负正相间,则称A是嵌套蕴含稳定的.该文研究一类特殊的符号模式矩阵,给出其嵌套蕴含稳定的完全刻划.     

基于LIFO系统的电力企业员工激励机制研究

本文通过运用LIFO（1ife orientation）系统．长处管理策略，结合薪酬一员工满意矩阵模型，对电力企业的员工激励机制进行了研究，提出了科学合理建立激励机制的措施和建议。     

实非对称爪形矩阵的特征反问题

提出和解决了两类实非对称爪形矩阵的特征反问题 ,并给出了解的表达式     

轿车用铝基复合材料制动盘的制备

对制备铝基复合材料的搅拌熔炼－液态模锻成形工艺进行了研究，得出了较合理的工艺参数，并利用该工艺铸造了用于桑塔纳轿车前制动器ＳｉＣ颗粒增强铝基复合材料制动盘毛坯，经机加工后试制了表面质量合格的制动盘成品。对该制动盘进行了材料性能检测试验和微观结构分析，并在ＳＣＨＥＮＣＫ制动试验台上进行了制动性能试验。结果表明，开发的铝基复合材料制备工艺参数合理，成本低廉，适于民用工业规模性生产；制备的ＳｉＣ颗粒增强     

Diagnostics for Autocorrelated Regression Models

This paper discusses the local influence approach to the linear regression model with AR(1) errors. Diagnostics for the autocorrelation models and for the autocorrelation coefficient only are proposed and developed respectively, when simultaneous perturbations of the response vector are allowed. Furthermore, the direction of maximum curvature of local influence analysis is shown to be exactly the same as that in Tsai & Wu (1992) when only the autocorrelation coefficient is of special interest.     

Two new error-correcting pooling designs from d-bounded distance-regular graphs

Let Γ be a d-bounded distance-regular graph with diameter d≥2. In this paper, we construct two new classes of error-correcting pooling designs from the posets consisting of the subspaces of Γ.