In development and the research of tai steel estate company ' s equipment management information system , according to the viewpoint of information theory , the concept of equipment information have determined , the equipment information of company has carried out overall investigation , the computer transformation way of information have analysed through applying the scientific method of data process and systems analysis and confired , dassifed and described for systematic in formation ; . on this foundation , with the theoretical foundation of information theory and set theory to guide , equipment management information system have carried out overall research through structured analysis method , systematic overall structural model and system to design model have established ; tai gang estate company ' s equipment management information system has maked through the aid of this database development tool of visual foxpro software as well as built - in to use technology again ofthis 2 kinds software of word and excel 在太钢房产公司设备管理信息系统的研究与开发中，依据信息论的观点，确定了设备信息的概念，对公司的设备信息进行了全面的调查，通过应用数据流程和系统分析的科学方法，对系统信息进行了确认、分类和描述，并分析了信息的计算机转化方式；在此基础上，以信息论、集合论的理论基础为指导，通过结构化的分析方法，对设备管理信息系统进行了全面研究，建立了系统总体结构模型和系统设计模型；借助visualfoxpro这一数据库开发工具以及成熟的excel和word这二种软件，通过软件嵌入复用技术，开发出太钢房产公司设备管理信息系统。
Fuzzy control is a kind of computer numerical control based on fuzzy set theory , fuzzy linguistic - variable and fuzzy logical reasoning , in which the experience of skilled operators and the knowledge of experts are summed up into the control rules in the form of " if . . . then . . . " , 模糊自动控制是以模糊集合论、模糊语言变量及模糊逻辑推理为基础的计算机数字控制。它将操作人员的控制经验和专家知识总结成一系列“如果…则… ”形式的控制规则,即模糊条件语句;然后经过模糊逻辑推理而得到控制作用。
At first the approximate operators of rough sets are modified , so the new operators of union , intersection and complement and approximate power sets are presented . this has enriched rough sets theory from the operator - oriented and set - oriented views . then by combining topology , rough topology and approximate topologies are defined and researched 首先修正粗糙集近似算子，提出近似集的新型并、交、补运算和近似幂集空间，从算子论和集合论两者的角度丰富了粗糙集理论；再结合拓扑，定义和研究了粗糙拓扑、近似拓扑。
In chapter 2 , we give some important properties of metapositive definite matrices , the expression of real and imaginary part about eigenvalues of real square matrices as well as the range of eigenvalues of real square matrices ( especially the range of their imaginary part ) . on the other hand , we sum up , establish and extend some necessary and sufficient conditions of metapositive definite matrices roundly . in chapter 3 , we give some important properties of complex positive definite matrices , the expression of real and imaginary part about eigenvalues of complex square matrices as well as the range of eigenvalues of complex square matrices . on the other hand , we sum up , establish and extend some necessary and sufficient conditions of complex positive definite matrices roundly . in summary , we discuss in terms of set theory the relation among real symmetric positive definite matrices , hermitian positive definite matrices and two types of generalized positive definite matrices - metapositive definite matrices and complex positive definite matrices 第一章：除引入hermite矩阵、 hermite正定矩阵和实对称正定矩阵较重要的性质外，还建立了它们的其它一些重要性质，尤其较全面地总结和建立了它们的若干充分和必要条件；第二章：建立了亚正定阵的一些重要性质，给出了实方阵的特征值实部和虚部的表达式，并导出了实方阵的特征值范围尤其是导出了其虚部范围，同时着重较全面地总结、建立和推广了亚正定阵的若干充分和必要条件；第三章：建立了复正定矩阵的一些重要性质，给出了复方阵的特征值实部和虚部的表达式，并导出了复方阵的特征值范围，同时着重较全面地总结、建立和推广了复正定矩阵的若干充分和必要条件；全文小结：从集合论的观点出发，对已讨论过的四类正定矩阵? ?实对称正定矩阵、 hermite正定矩阵、亚正定矩阵和复正定矩阵之间的关系作了比较细致的论证与探讨。
This thesis introduce the conception of the theory of frame of the extension logic , the theory of extension convene , the conception of matter element and the theory of matter change systematically . the lozenge thinking method in the extension logic is discussed in detail ; the method how to establish relation function is discussed in detail ; the important characters of relation function in extension control are discussed in detail ; according to study the extension controller , extension control ways based on different character variable is given . by the simulative study , the conclusion can give the direction on engineering practice 本论文系统地介绍了可拓学的理论框架、可拓集合论、物元的概念、物元变换的理论；重点阐述了可拓学中的菱形思维方法、关联函数的建立方法以及关联函数在可拓控制中的几个重要性质；最后对可拓控制器进行研究，提出了几种基于不同特征量的可拓控制方案，并进行了仿真研究，得出了对实际控制工程有指导意义的结论。
Not only have the reseach results about go - space enriched the contents of general topology , but also have increased ingenious creativity and breakthrough and made general topology more wonderful and lively because of making use of the theory about ordinal and cardinal in set theory , axiomitic system and combinatorial theory 一个世纪来， go -空间的研究成果不仅在内容上丰富和充实了一般拓扑学，而且由于借助集合论的基数和序数理论、公理体系及组合思想等，在方法上也给一般拓扑学增添丁巧妙的创造性和突破性，使一般拓扑学变得更加精彩生动。
