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In this paper,the scale of binary discernibility matrix are greatly reduced by using absorption law on row and logic addition,and a reduction algorithm based on binary discernibility matrix is proposed.

为此，利用对行的吸收律和逻辑和实现了对二进制可辨矩阵的规模进行有效缩减，构造一种新的基于二进制可辨矩阵的数据约简算法。

In this paper, we combine experiments with theories. Dynamic compressing experiment has been performed for the matrix material of the tungsten alloy in order to study its dynamic properties. At the same time we have studied the forming process of adiabatic shear band of tungsten alloy and its matrix material.

本论文采用实验测试与理论分析相结合的研究方法，对钨合金基体材料进行动态压缩实验，研究其动态性能，同时研究钨合金以及基体材料的绝热剪切带进行产生、形成过程。

To address it,this paper expanded the method getting inverse matrix by adjoint matrix to ZN through constructing mapping regulations.

为减小该方法计算代价，将杜里特尔分解和克劳特分解求逆推广到ZN，解决了变换阵顺阶主子式模N互质，矩阵变换的逆问题。

In this paper, the function of regression matrix is estimated in a growth curve model, and the necessary and sufficient conditions that a linear estimator of the function is admissible among the class of all lin ear estimators under matrix loss are obtained.

摘 要：对增长曲线模型中回归矩阵的函数的线性估计进行了研究。在矩阵损失下，作者得到了线性估计在一切线性估计类中可容许的充要条件。

The paper also gives an analysis to a champion enterprise in constructing a virtual enterprise, including its function, conditions, and principalship arrangement. Then, the paper discusses the classification of different partner enterprises, and adopt the risk matrix to evaluate the choosing process of partner enterprises. After deciding all member enterprises, the paper puts an emphasis on the construction process and pattern of virtual enterprises. Finally, the paper conducts a detailed study on the integration of core competence, the motivation of virtual enterprises, the distribution of control power and cross-cultural management.

在此基础上，先从盟主企业角度，阐述了在组建虚拟企业过程中，盟主企业担当角色，应有的职能、盟主企业必备的条件，及委托权安排；然后讨论了伙伴企业的分类，提出了伙伴企业的选择流程，应用风险矩阵评估了伙伴企业的选择过程；在确定好各个成员企业后，着重分析了虚拟企业的构建流程、构建模式；具体研究虚拟企业核心能力整合、虚拟企业激励、控制权分配、跨文化管理。

In this paper, we first introduce the concepts and structures of generalized per-symmetric matrix, generalized centro-symmetric matrix or generalized bisymmetric matrix.

本文介绍了广义广对称矩阵、广义中心对称矩阵以及广义双对称矩阵的概念及结构，研究了这些特殊矩阵集合中，矩阵方程AXB=C及矩阵方程组A_1XB_1=C_1，A_2XB_2=C_2的迭代解法，同时考虑了相应的最佳逼近问题。

In this paper, an iterative algorithm is proposed to find the generalized centrosymmetric solution pair of matrix equation AXA~T+BYB~T=C. The solvability of the matrix equation can be determined automatically in the iterative process. When the matrix equation is consistent, the solution pair can be obtained within finite steps in the absence of round-off errors.

该论文运用迭代方法研究了矩阵方程的一般中心对称解解，特别地，当矩阵方程是相容的时，经过有限步就能求出该方程的一般中心对称解解，然后以此为主要依据进一步研究了矩阵方程的最优近似解，最后举例验证了该论文的主要结论。

First, the paper analyzes 217 factory"s exterior environments completely and objectively by the models of PEST and Boter "s "five forces" and it points out the opportunities and the challenges for 217; Second, making use of the strategic groups theories, the BOSTON matrix analysis, the core ability theories and value chains theories, the paper analyzes the competition position of 217 factory in AC profession. It explicates the main rivals of 217 and the present conditions that 217 factory makes use of chances and averts the exterior threat; The third, according to the exterior environment and internal resources-ability of analysis, the paper makes use of the theories of SWOT to map out competition strategic projects. Immediately after, the paper evaluates and analyzes these competition strategic projects by means of strategy choosing theories.and then it chooses strategic projects of competition under current circumstance; The end, this paper puts forward to some ways in order to carry out these strategic projects of competition that has been chosen.

首先，借助于PEST和波特&五力&模型对217厂所处的外部环境进行了比较全面、客观地分析，指出了217厂所面临的机遇与挑战：其次，运用战略集团群理论、BOSTON矩阵分析、核心能力理论和价值链分析理论对217厂在行业中的竞争地位进行了研究，明确了217厂在行业中所面对的主要竞争对手以及217厂利用外部机会和避开外部威胁的资源和能力情况；第三，根据外部环境分析以及企业内部资源和能力的分析，利用SWOT理论对217厂的竞争战略方案进行初步制定，同时，采用战略选择理论对这些方案进行了评价和分析，选择出了当前情况下217厂的竞争战略方案；最后，围绕所选择的竞争战略方案，提出了实施这些战略的建议以及着眼于企业长远发展的核心竞争力的培育问题。

This paper introduces a criterion of linear system stability , which is de rived from the relationship between matrix trace and matrix characteristic value and the analysis of companion matrix .

通过矩阵迹和特征值的关系，以及对友矩阵特性的分析，本文导出一个线性系统稳定性的算法，它简单实用，收敛快，准确度高。

In studies of interaction among pile, platform that above it and surrounding soil, this paper employ the concept of plate element to simulate the loading character of platform, and employ the concept of solid element to simulate the character of pile and soil, using the finite element method after understanding the geometry properties of pile, soil and the platform. Analyzing the loading properties of the three entities above and their deformation, this paper also employ a special element, Penalty Element. The introduction of penalty element of this kind has served to guarantee the join harmony of displacement between solid element and plate element, thereby effectively resolving the join problem between platforms, pile that support it and surrounding soil.Considering significant property difference between pile material and its surrounding soil, there may be much shear stress on their contact interface produced under vertical load, thus causing displacement or fission. Therefore it is necessary to adopt one special constitutive law of this kind of contact interface, which can reflect its feature of loading and deformation thoroughly. On the basis of the deformation feature and constitutive laws of some contact interface obtained by Zhang Dongji and people concerned through some single-shear experiments on contact interface between structure and soil, this paper employ one pile-soil three-dimensional constant thickness contact interface model to simulate the " slide" taken place on the interface between pile and its surrounding soil. With this kind model, this paper has also created one finite element model, which can be applied to perform finite element calculation and analyze the pile-loading feature, and deduced its element stiffness matrix.

在承台-桩-土共同作用中，考虑桩与承台的几何特性，采用有限元方法，用实体单元模拟桩土，用板单元模拟承台，更具体地分析桩和承台的受力特性和变形，而且还采用罚单元—既实体单元与板单元之间连接必须满足变形协调条件，来有效地解决了承台与桩土的连接问题，且在桩土共同作用中，由于桩体结构的材料性能与周围土层性质相差较大，在竖向荷载下有可能在其接触面上产生较大的剪应力从而导致错动或开裂，因此，为了充分反映桩土接触面上的受力及变形特征，应采用一种桩土接触面特有的本构关系，即利用张冬霁等人关于结构与土体接触面单剪试验所得到的接触面变形特征及其本构关系，引入桩-土三维等厚度接触单元来模拟桩与桩侧土之间的&滑移&，在此基础上建立可用于桩基承载性状分析的有限元计算单元模型，并推导出了各单元的刚度矩阵。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。