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The fundamental structure of this model stemmed from a theory advanced by Louis Guttman.


Our first results of the modeling of FACs in the magnetosphere, which were based on the theory advanced in [15], were obtained in [6].


A case is then made for considering these particles as being primarily electromagnetic in nature and exhibiting an underlying spacetime structure in terms of the theory advanced.


This paper focuses on the English tradition of subalternation between 1310 and 1350, and concludes with a discussion of the theory advanced by Thomas Claxton early in the fifteenth century.


According to the external and internal two kinds of theory advanced by E.

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 This paper consists of two parts.The first part deals with the development of thinking in children. In this part, the writer outlines the theories advanced by J. Piaget, J.S.Bruner and some SoAiet psychologists on the levels of development of children's thinking and then presents his initial opinion about the levels of development of children thinking, holding that the process of the development of children's thinking can be generally described as: pre thinking structure (perceptive structure)  transition... This paper consists of two parts.The first part deals with the development of thinking in children. In this part, the writer outlines the theories advanced by J. Piaget, J.S.Bruner and some SoAiet psychologists on the levels of development of children's thinking and then presents his initial opinion about the levels of development of children thinking, holding that the process of the development of children's thinking can be generally described as: pre thinking structure (perceptive structure)  transition from prethinking structure to concrete thinking structure  concrete thinking structure  transition from concrete thinking structure to abstract thinking structureabstract thinking structure. The second part deals with the devlopment of children's language and gives a general description of the actual development of children's language.  本文分两部分,第一部分儿童思维的发展,作者扼要介绍了J·皮亚杰、J·布鲁纳和苏联心理学家关于儿童思维发展阶段的理论,初步提出了自己关于儿童思维发展阶段的意见,认为儿童思维发展的历程,可以简略表述为:前思维结构(知觉结构)—→前思维结构向具体思维结构过渡—→具体思维结构—→具体思维结构向抽象思维结构过渡—→抽象思维结构。第二部分儿童语言的发展,作者根据两年来观察一个儿童语言的发展,概括描述了儿童语言发展的实际情况。  First,the concepts of equivalent resistivity have been put forward on the basis of experimental results and analysis of induced polarization mechanism as well as the definition of the polarizability of volume polarization medium.Secondly,by the superposition of potential fields,the differential formulas of Ohm's law in stable current field are presented for polarization current field,Then,according to the theorem of the conservation of charge,the continuous boundary condition formulas of the vertical component... First,the concepts of equivalent resistivity have been put forward on the basis of experimental results and analysis of induced polarization mechanism as well as the definition of the polarizability of volume polarization medium.Secondly,by the superposition of potential fields,the differential formulas of Ohm's law in stable current field are presented for polarization current field,Then,according to the theorem of the conservation of charge,the continuous boundary condition formulas of the vertical component for current density of polarization field have been proposed.Finaly,the calculation results for some typical conditions are presented,some new concept's and new theories advanced.  本文首先根据实验结果和对体极化介质激发极化机理的分析,并由极化率的定义出发,采用与以往不同的方法,提出等效电阻率概念。其次,根据位场的叠加原理,给出在稳定电流场中二次极化场欧姆定律的微分形式。然后,根据电量不灭定律,提出稳定电流场中二次极化电流密度法向分量连续的边界条件式。最后,给出几种典型条件下的理论计算结果。  This theory advanced by professor Li chunfen in 1960s announces the internal relation and diffence of the Structure of Geographical Environment. It uses a scientific method to discuss systematically the intrinsic quality of Geographical Environment. It not only improves the teaching level of Foreign physical Geography, but also promotes, the research for Regional Geography.  六十年代初由李春芬教授提出的这一理论,揭示了地理环境结构的内在联系和差异。运用科学的方法论述了地理环境结构的本质特性,不仅提高了《世界自然地理》课程的教学水平,也促进了区域地理的研究。   << 更多相关文摘 
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