四元数体上右线性方程组的极小范数最小二乘解

讨论四元数体上右线性方程组AB=b的极小范数解、最小二乘解和极小范数最小二乘解，得到了类似于复数域上同类问题的若干结果．     

底线伦理、最低限度的道德与当代价值观教育

底线伦理、最低限度的道德的提出有着复杂的社会原因,当代社会道德滑坡和不断出现的突破道德底线的事件是直接的原因.价值观教育是道德教育的精神内涵,底线伦理、最低限度的道德的理论向价值观教育提出了新的要求,也提供了解决道德价值观教育缺乏实效问题的可能途径.价值观的非理性和非知识性特点使得价值观教育要远复杂于理性的知识教育.关乎个人道德成长、关乎个人与他人关系、个人与社会关系等的价值观是底线伦理和最低限度的道德所必须要求的;价值观教育的途径和方法需要吸收现代德育研究成果,使其更为生动和易被青少年所接受;价值观教育还要求一个公正的社会.     

自动泊车小车转弯参数及特征环境参数的确定

讨论了基于模型小车的车辆自动泊车系统的基本参数计算.通过小车最小转弯半径,转弯环道最小宽度的计算,并结合自动泊车策略所需要考虑的综合因素,确定了自动泊车小车转弯参数及特征环境参数.针对实际车辆与模型小车在参数上的区别,以及测距方案的实际情况,对计算结果进行了简单的分析.     

The Congressional Archive: A Breed Apart

ABSTRACT

Congressional archives are unique among archival collections. Bigger in size and often broader in scope in terms of the kinds of records they contain, these collections place an uncommon strain on academic archives. Before agreeing to assume such a burden, it is important for administrators to understand the special characteristics of a congressional archive and their staff's ability to manage the project while fulfilling their mission to the educational institution.     

球面、复射影空间中的子流形

本文研究了S^n p中的n雏紧致全实极小子流形的一类Schrǒdinger算子的第一特征值，得到了一个它的上界的估计，并由此给出它的一个重要应用．     

局部对称共形平坦黎曼流形中的伪脐点子流形

研究了局部对称共形平坦黎曼流形的伪脐点子流形，得到了这种子流形的一个内蕴积分不等式，从而推广改进了B.Y.Chen一个相应结果。     

图的支配集的有效算法

给出了利用命题逻辑公式的析取范式和主析取范式求图的全部极小支配集和最小支配集以及全部极小边支配集和最小边支配集的一般算法     

Visual Search and Biological Motion Perception in Tennis

Purpose

The purposes of this study were to: (a) examine the effect of experience and goal constraints (speed, accuracy) on kicking patterns; (b) determine if effective striking mass was independent of ankle velocity at impact; and (c) determine the accuracy of kicks relative to independent factors.

Method

Twenty participants were recruited to kick at 3 different velocities with and without an accuracy requirement. Multivariate analysis of variance determined if relative timing of joint angular velocities changed during the kick. Chi-square analysis determined if calculated effective mass was independent of ankle velocity at impact. Analysis of variance (ANOVA) was used to examine differences in absolute constant error and variable error according to independent factors.

Results

Results indicated that experience and speed affect absolute timing of joint velocities with no changes in the relative timing of peak joint velocity across independent factors. Chi-square analysis indicated that calculated effective mass is not independent of ankle velocity. ANOVA indicated that experienced performers displayed less variability error than did inexperienced performers.

Conclusion

It was concluded that: (a) Experience, velocity, and accuracy do not affect the relative timing of kicks; (b) kickers trade ankle velocity at impact for greater effective striking mass and ball velocity; and (c) variability in ball placement is affected by experience.     

含公布电源配电网可靠性的评估方案研究

在原有配电网引入分布式电源的情况下,提出一种基于应用改进最小路法结合可靠性指标求解评估含分布式电源distributed generation（DG）的配电网可靠性评估方案。以IEEE-RBTS Bus6 系统为例进行不同方案的仿真。仿真结果表明,所提出的可靠性评估模型可以明显地改善配电网系统对用户提供电能的可靠性。     

计算机网络可靠性的分析研究

本文首先介绍了计算机网络系统的概念和可用于计算机网络系统的集中可靠性分析的相关概念及方法,然后着重于对本文要采用的节点遍历法等一些算法做了算法分析和具体实现,使繁杂的算法易于理解。并在对一般节点遍历法的理论分析的基础上对改进后的节点遍历法进行了较深入的探讨。网络系统可靠性数值计算量大而烦琐,改进后的节点遍历法可以大大减少其运算量。因此对现有算法的改进是十分有意义的。