广义相对论的几何纲领与引力场的时空特性

在GR中,引力场各处的时钟快慢不同,引力场中各处的量杆长短不同,但是,引力场中的光速却是不变的.这意味着引力场时空弯曲了,欧几里德几何规律不再成立.其根本原因正是爱因斯坦所开创的广义相对论的几何化纲领.     

有关引力场的几点讨论

从引力场是矢量场出发, 比较详细地讨论了引力场的性质     

引力场的时空特性研究

引力场是一种矢量场,广义相对论对引力问题的描述是非常有效的。分析了广义相对论中的等效原理和广义协变原理,讨论了爱因斯坦引力场方程,研究了相对性原理、引力场中的时间膨胀、长度收缩。     

引力场中电磁波的传播和光线偏折

The gauge invariance of the electromagnetic field in gravitational field is an important question. We prove d' Alembert equation in gravitational field with gauge invariance under the Lorentz condition. Using the kinematic equation of photon in normal static and spherically symmetric gravitational fields, we deduce the orbital equation of photon. As a special example, we explicate the deduction and discussion about the deviation angular of light in Reissner-Nordstrom space-time.     

引力场和静电场

本文从多个角度挖掘了引力场与静电场描述上的相似之处。如果在教学中加以比照,将有利于教师教学难点的突破,也有助于学生对旧知与新知的巩固和掌握。     

解读课程情境：心理场论作为课程理解的方法论

课程情境本质上是一个场。心理场论思想的主要特征表现为整体动力观、系统观、心理取向、整合倾向、建构法。相应地，课程情境也表达着上述场性的特征：它是一个学习与各种课程资源相互作用的整体，一个动力整体，一个涵摄着时空要素的开放系统，并且表现着整合的趋势。关注情境场，运用场思维已成为当代课程研制的重要取向。     

高斯定理在引力场的应用

本文通过比较分析静电场和万有引力场．类比得到万有引力场的高斯定理,并通过例题给出了用引力场高斯定理的应用过程。     

"万有引力场强度"与"万有引力场的高斯定理"

通过库仑定律与万有引力定律的相似之处．由静电场的电场强度和静电场的高斯定理引入万有引力场强度和万有引力场的“高斯定理”,在求解某些具有对称性物体与质点之间的万有引力时,通过万有引力场的“高斯定理”可以大大简化计算．     

场源参量对引力红移效应的影响

讨论了场源的电（磁）荷、角动量、旋转电荷和磁短对引力红移效应的影响。结果表明,电（磁）荷、角动量和磁矩均使这种效应减弱,旋转电（磁）荷使这种效应增强。     

用系统科学的观点理解如何上好高中数学课

当前高中数学教育存在一些问题,没有联系实际去传授知识,导致学生接受知识不自然,从而失去学习数学的兴趣．用联系的观点去看待问题,这是系统科学的重要思想之一．所以,可以用系统科学的观点,将把“如何上好高中数学课”看成一个系统,分析该系统的功能、结构、划分该系统的子系统等．在新课标的基本要求下,从教师的角度去分析如何将高中数学课上好是很有必要的．     

Quantum entropies of electromagnetic and gravitational fields on Taub-NUT black hole background

1 Introduction a In theoretical physics, the problem of calculating the quantum entropy on black hole background is a hotspot. Much efforts have been devoted to study the quantum entropy via brick-wall model [1] in the last 20 years, and most conclusions [2-6] are the quantum entropy according with Bekenstein-Hawking equation, i.e. S = Ah / 4 where S is the quantum entropy; and Ah is the area of the black hole horizon. But recent research [7,8] shows that the quantum entropy also has the log…     

Using possible-selves theory to understand the identity development of new teachers

Questions about identity and future success often occupy the thinking of individuals during life transitions. Possible-selves theory describes how future-oriented thought provides identity-relevant information and motivation to pursue self-relevant goals. Expected and feared possible selves of beginning teachers (n = 221) were analyzed revealing four main categories (i.e., interpersonal relationships, classroom management, instruction, and professionalism). Differences between student and beginning inservice teachers suggest a transitional trajectory that could have implications for understanding the “how” of teacher identity development. Possible-selves theory may help bring a degree of unity across divergent frameworks and help link identity to broader issues of teacher development.     

从文化角度谈旅游资料的翻译

随着我国旅游业的不断发展,旅游资料更多的需要被翻译成英文给外国游客使用。大部分的旅游翻译作品都是非常成功的,但其中也存在很多问题。这些问题多是由于忽视了中英文化差异和语言文化差异而引起的,译者也没有给予重视。本文将从文化角度来谈谈旅游资料的翻译。     

基于场模型的南阳经济空间探讨

以物理学的场理论作为研究工具,以南阳区域经济水平为分析对象,在GIS软件的支持下,对经济空间进行全面的分析和探讨,用趋势面模型和梯度场模型来形象直观地描述分析南阳经济空间。     

TA training: From the TA's point of view

Teaching assistants (TAs) at a major university were surveyed about the annual campus-wide and departmental TA training programs in which they had participated. Responses from these TAs differ markedly from reports based on surveys conducted with the administrators of such training programs. Current training practices can be improved by considering more seriously the TA's point of view.Janet Lee Jones received her B. A. from Pomona College in 1984, concentrating in psychology and Chinese language. Her Ph.D. was awarded in 1989 in the area of cognitive science, with a specialization in psycholinguistics. She has supervised undergraduate and graduate teaching assistants for the past five years. Dr. Jones now teaches a wide variety of psychology courses and interdisciplinary seminars at Fort Lewis College in Durango, Colorado.     

从劳动价值论到社会主义财富论

马克思的劳动价值论是在对工业化初期的资本主义英国进行批判分析过程中建立起来的，深化对马克思主义劳动价值论的研究和认识，应不拘泥于理论教条，而应当结合国情，与时俱进，建立社会主义财富论，这不会导致对劳动价值论的否定。