查询词典 halving method

Through discussing good and bad points of several common statistical measures and examining the relationship between such measures,we discover that the statistical method itself also has some unsatisfactory places,one of improvement means is to use the axiomatic method and the welfare method.

从理论上讲，有许多种可实际应用的度量不平等的方法，每一种度量方法都具有一些值得称颂的优点，同时也存在一些难以克服的缺点，其中实践中使用得最为广泛的就是统计度量方法。

LK affirms that logic is a universal method.If logic can be amathematical method,it can surely be used as a way to identify knowledge concept,atool of deduction and the method of knowledge system axiomatization.

知识逻辑主义"断言逻辑是一种普遍的方法，逻辑既然能成为数学的方法，就必然能为任何知识系统提供方法论，可以成为定义知识概念的方法、知识，推演的工具和知识体系公理化的方法。"

Due to the introduction of IP curves, the method detects the symmetry and axis of objects by using the expressions of function instead of using the optimization method. Consequently, the computational cost of the method is low.

由于是基于隐含多项式曲线进行对称性检测，因而并不需要复杂的优化算法，仅用明确的解析式即可验证对称性并检测出相应的对称轴。

Based on the existed method for interpreting line drawings, we put forward a kind of recursive method for computer interpretation of line drawings under orthographically axonometric projection. Our method can be used to interpret to the hidden-parts-drawn and the natural line drawings.

在已有基于点与平面的相对位置关系解释线框图研究成果的基础上，提出一种计算机递归解释线框图的方法，主要针对的是正轴测投影线框图的计算机解释。

The Schur subspace iteration method is applied for the dynamic characteristic analysis of damped structure vibration system and coupled fluid－structure system. This method avoids complex computation and has good numerical stability. A accelerated technique and a pre－process method for the system matrix are suggested to improve the computational efficiency. The generalized uncoupled equation is obtained from the Schur matrix and a back substitution scheme of response computaton is developed.

第三部分将非对称特征值问题的Schur子空间迭代法应用于非经典阻尼结构振动系统和流固耦合系统的特征值分析，建立了相应的具体算法，并给出了用以提高迭代收敛速度的迭代加速和矩阵预处理等实用技术；利用Schur矩阵的结构特点，推导了系统方程的动力解耦形式，给出了响应计算的回代求解格式。

Fourth, the membrane recovering method was found within stationary tubular membrane elements and was compared with rotating flow by using experiment, that is, the unloading pressure recovering method is one of the most efficient method, it may reduce the auxiliary time, such as washing , backflush, reverse filtration, but the tubular membrane is washed or backflush or changed after the cycle period are accumulated numerous times.

第四、对旋转流静止管式膜的再生进行了实验比较，并提出了旋转流膜管可以通过卸压再生，以减少膜管每次使用后的冲洗、反吹等辅助时间，采用该种方法再生的膜管其渗透通量完全能满足要求，当循环使用一定次数后再进行或冲洗或反吹或更换新膜管。

This thesis set takes an architecture project as example and constructs the index set of project management evaluation. Then integrated evaluation method is designed based on the balanced scorecard index set, analytical hierarchy process method and Fuzzy Comprehensive Evaluation Method.

最后，本文以建筑工程项目为例，建立一套适合建筑企业项目管理绩效评估的指标体系，并结合层次分析法和模糊综合评价法，形成了一套完整的项目管理绩效评估方法体系。

The principle and system structure of direct measurement method and indirect measurement methods （ including thrust wall pressure integral method and ballistic pendulum method） are introduced.

针对脉冲爆震发动机瞬时推力、平均推力测量问题，介绍了直接测量法和间接测量法（包括推力壁压力曲线积分法和抛物摆法）的测量原理及系统构成。

The characteristic, difference and relation of the normal and inverse design are compared detailedly. The formula of the first and second class eigen sensitivity are given. For the horizotal vibration system of building structure, the sensitivity method and perturbation method are adopted to modify the dynamic characteristics. The inverse eigenvalue problem of Jacobi matrix and the positive, symmetry, band matrix are studied. The method of Evolutionany Computation is first used in the inverse design of building structure, the principal problems are studied. The features of aseismatic inverse design of building are analysed.

本文较详细地比较了正、逆设计的特点；给出了特征值和特征向量的一阶和二阶灵敏度分析公式；对于建筑结构水平振动系统，提出了结构动态特征的修改方法；对Jacobi矩阵及实对称带状矩阵的逆特征值问题进行了分析研究，首次将其引入建筑结构抗震逆设计中；首次将进化计算方法应用于建筑结构抗震逆设计中，对主要问题作了探讨；对建筑结构抗震逆设计的特点进行了分析，提出未来的发展方向和前景。

This thesis consists of two parts. The first one was that boundary value problem was discrete with five point difference method. Three kinds of memory formats were studied, which were full matrix, half band width and row compress sparse. Full matrix memory format and half band width memory format first was contrasted. The results show that half band width has efficiency in space. Then the algebraic system of finite element method was solved by Gauss-Seidel iteration method to popular row compress sparse memory format.

本论文由两部分组成，第1部分针对边值问题，用5点差分格式进行离散，并对离散矩阵这类大型稀疏矩阵，研究了系数矩阵的3种存储格式的优劣，即：满矩阵存储格式、半带宽存储格式和按行压缩稀疏存储格式，首先我们将满矩阵存储方式和半带宽存储格式进行了对比，迭代法的数值实验表明：利用半带宽存储的矩阵在空间运算方面具有高效性；然后针对目前数值实验中流行的按行压缩稀疏存储格式，实现了有限元离散代数系统的迭代法的求解。

For the head-teacher of the class said that I had seriously broken the school rules,which led me to a three-day suspend class.

为什么呢？因为我的班主任说我严重的违反了校规，于是让我停课三天。

Many of them believe that the conversion of thousands of working-class folk in England spared that nation from the mass carnage and the tyranny that came with the revolution in France.

他们之中有许多人相信，在英国数以千计的劳工阶级之悔改信主使英国免於遭受如法国大革命所造成的大屠杀和专制暴政。