图像二维鉴别特征矩阵融合及人脸识别

二维最大散度差鉴别准则和二维Fisher鉴别准则抽取的特征具有很强的相关性.本文在此基础上,通过对传统的基于向量的典型相关分析方法进行分析改进,提出了一种新的直接基于图像二维鉴别特征矩阵融合的二维典型相关分析方法,并将其应用于人脸识别的特征融合过程中.较基于向量的典型相关分析,该方法计算过程中构造的协方差矩阵维数大幅度减小.这在一定程度上避免了人脸识别中存在的"高维小样本问题",另一方面也使算法的速度明显提高.     

The communication anxiety inventory: Validation of state‐and context‐communication apprehension

Research reported in this paper investigates the reconceptualization (McCroskey, 1984) of communication apprehension (CA), focusing on the relationship between context‐CA and state‐CA. The validity of the reconceptualization can be enhanced by demonstrating that state‐CA (level of fear and anxiety) is systematically related to context‐CA (predisposition). Two research studies using a new operational measures of state‐CA and context‐CA, the Communication Anxiety Inventory, offer empirical support for the relationship between context‐CA and state‐CA. Results show that context‐CA explains a minimum of 50% of the state‐CA variance. Conclusions suggest that level of fear or anxiety varies closely with context‐CA and that the new scales have strong predictive validity.     

高职院校公共基础课与专业课之间的相关分析——以广东工商职业学院为例

指出轻视公共基础课的教学对培养高素质的应用型人才是不利的,并利用典型相关分析的方法,对高职院校财务管理专业的公共基础课和专业课进行了相关分析,得出了公共基础课对专业课的支撑作用,为高职院校的课程改革提供了一定的理论参考。     

矩阵的中心化子及其维数

Mn（C）表示复数域C 上所有 n × n矩阵的全体。对 A∈Mn（C）,A的中心化子定义为C（A）={B∈Mn（C）｜AB=BA }。本文利用相似变换及 Jordan矩阵给出了复数域上任意n阶方阵的中心化子和中心化子的基及维数。     

高校学生档案管理系统的数据库设计与实现

根据目前高校学生档案管理的要求,应用Delphi程序设计和SQL数据库的技术,完成对高校学生档案管理系统的需求分析、功能模块划分、数据库模式分析,并由此设计出了数据库结构和实现过程。系统运行结果实证,设计的系统可以满足学生、管理人员和高级管理员三方面的需要。     

基于联合Caputo导数的分数阶Hamilton力学和分数阶正则变换

由于分数阶微积分在科学和工程的诸多领域的成功应用,传统的分析力学理论和方法正在不断地拓展到含有分数阶微积分的系统。基于联合Cuputo分数阶导数,文中建立了分数阶Hamilton原理,并由分数阶Hamilton原理直接导出了分数阶Hamilton正则方程;建立了分数阶力学系统的正则变换理论,给出了四种基本形式的分数阶正则变换,并通过算例说明母函数在分数阶正则变换中的作用。     

Kinematics of a striking task: accuracy and speed–accuracy considerations

Handballing in Australian football (AF) is the most efficient passing method, yet little research exists examining technical factors associated with accuracy. This study had three aims: (a) To explore the kinematic differences between accurate and inaccurate handballers, (b) to compare within-individual successful (hit target) and unsuccessful (missed target) handballs and (c) to assess handballing when both accuracy and speed of ball-travel were combined using a novel approach utilising canonical correlation analysis. Three-dimensional data were collected on 18 elite AF players who performed handballs towards a target. More accurate handballers exhibited a significantly straighter hand-path, slower elbow angular velocity and smaller elbow range of motion (ROM) compared to the inaccurate group. Successful handballs displayed significantly larger trunk ROM, maximum trunk rotation velocity and step-angle and smaller elbow ROM in comparison to the unsuccessful handballs. The canonical model explained 73% of variance shared between the variable sets, with a significant relationship found between hand-path, elbow ROM and maximum elbow angular velocity (predictors) and hand-speed and accuracy (dependant variables). Interestingly, not all parameters were the same across each of the analyses, with technical differences between inaccurate and accurate handballers different from those between successful and unsuccessful handballs in the within-individual analysis.     

自适应PID控制器的冷却水温度控制系统

笔者分析了自适应ＰＩＤ控制器参数自整定的工作原理，并介绍了将其用于主机冷却水温度控制系统中的研究结果。     

浅析城乡二元经济问题———以青海为例

青海省经济快速发展的同时城乡二元经济问题日趋严重,并成为经济发展的障碍,本文运用实证分析与规范分析,依据青海省近三十年经济发展数据对青海城乡二元经济的表现,及对经济社会发展的现实和长远影响进行探讨和分析.通过分析,现阶段青海城乡二元经济对比是在扩大的,城镇化战略对缓解青海省城乡二元经济作用不显著.以此为基础对缓解青海城乡二元问题提供理论依据.