单相对地短路时电容电流分布图的分析和探讨

运用电路理论对中性点绝缘电网发生单相对地短路时各电压电流进行了具体分析，指出了历年出版的″单相接地时电容电流分布图″所存在的不妥之处，得出了正确的电容电流分布图，完善了这方面的基础理论研究。     

无约束最优化问题的特征值方法

本文讨论了利用变量变换求解二次可微函数ｆ（ｘ）的无约束最优化问题，给出了一个特征值方法，解决了Ｈｅｓｓｅ阵非正定时的搜索方向问题。实算表明，该算法在迭代次数和数值稳定性上均令人满意。     

对高等教育几个理论问题的探讨

高等教育要深入进行改革,应当围绕培养什么人,怎样培养这一根本问题来开展,但是,还必须解决与此相关的一些理论问题。本文就如何重新认识高校办学的指导思想、警惕忽视教育的阶级性、为什么高校必须坚持四项基本原则,怎样建设一支合格的教师队伍等方面作了一些探讨。     

土地自然价值及其“生态环境价格”

将土地自然价值分成固定自然价值和可变自然价值，讨论了土地生态环境的价值、价格及区位问题，且将土地生态环境分为四种类型。     

螺旋理论与旋光方向

利用螺旋理论的规律可以推断分子的旋光方向,反之,从旋光方向也可以推断分子的构型和构象。     

离散变量的随机方向法

本文提出一种离散变量最优化方法的新解法——随机方向法,着重研究离散空间的可能搜索方向的数目,随机搜索方向的决定和搜索方法。这个方法具有程序结构简单,收敛速度快的优点,是解决工程实际问题的一个实用的离散变量最优化方法。     

隧道汽车交通非定时式自动控制系统

本文介绍隧道汽车交通条件与实现自动控制的功能要求,汽车自动检测装置,交通自动控制器。本系统经现场通车使用,已完全达到了设计要求,有社会与经济效益。     

A Neural-based Model for Fast Continuous and Global Robot Location

One of the problems in the field of mobile robotics is the estimation of the robot position in an environment. This paper proposes a model for estimating a confidence interval of the robot position in order to compare it with the estimation made by a dead-reckoning system. Both estimations are fused using heuristic rules. The positioning model is very valuable in estimating the current robot position with or without knowledge about the previous positions. Furthermore, it is possible to define the degree of knowledge of the robot previous position, making it possible to adapt the estimation by varying this knowledge degree. This model is based on a one-pass neural network which adapts itself in real time and learns about the relationship between the measurements from sensors and the robot position.     

我国北方温室园艺产业的发展方向--现代日光温室园艺产业

对中国北方发展现代日光温室园艺产业的必要性进行了充分论述,并指出现代日光温室园艺产业是我国北方温室园艺产业的发展方向。进一步明确了发展现代日光温室园艺产业的主要目标、基本要求与发展的难点和目前应采取的措施。     

Assessing the validity of self-reported stress-related growth.

The purpose of these studies was to assess the validity of self-reported stress-related growth (SRG). In Study 1, individuals with breast cancer (n = 70) generally did not report greater well-being than a matched comparison group (n = 70). In Study 2, there were no significant differences in well-being between undergraduate students who said that something positive had come out of their worst stressor (n = 34) and those who reported no positives (n = 34). In Study 3, specific domains of SRG assessed in undergraduate students (n = 96) generally were not uniquely related to corresponding well-being measures. Thus, the authors found fairly little evidence for the validity of self-reported SRG. Future research directions are highlighted. (PsycINFO Database Record (c) 2010 APA, all rights reserved)