查询词典 geometric average

Using analytic method and theory of geometric inequality,we study the problem of geometric inequalities concerning n-dimensional simplex and its interior point in.

应用解析方法和几何不等式理论研究了n维欧氏空间En中n维单形Ωn的外接球半径及Ωn中内点之间的几何不等式问题，建立了涉及单形Ωn的外接球半径以及Ωn中内点到各侧面距离之间的几何不等式，作为其应用，进一步改进了著名的M.S。

And made a comparison between the Han nationality and the BouYei nationality students in learning geometric proof, we sum up the defferences between learning geometric proof abilities and the general proof process.

针对问卷和测查题的定量统计分析和个案定性分析，得出被试学生学习几何证明的一般过程和证明能力发展的差异情况，在此基础上进行了几何证明的微型教改实验，得到以下的结果： 1。

The decomposite-optimized system is discussed by combining the principle of geometric programming and a new view—the comprehensive optimization of hierarchal geometric control in systems is proposed.

在某一个时刻，系统受到未知的扰动，于是使系统从给定的稳定状态转变到另外的已知状态。

This paper discusses the kernel of the system -- geometric model and includes the following:(1) The topological elements and the relation between them in geometric modeling system are explained and expressed by the theory of simplicial complex and CW-complex. In addition, the identification operators and homology theory in algebraic topology are used in our model. A hierarchical structure is built on the base of complex.

本文主要讨论这个系统的核心问题——几何建模问题，包括以下几个方面内容：(1)用单纯复形和CW复形的理论来解释和表达造型系统中的拓扑元素和拓扑元素之间的相关关系，并将代数拓扑中的粘合操作和同调论应用到模型中，建立以复形为基础的层次结构。

In Plato's "Symposium", Aristophanes argues that the origins of love lie in the search for symmetry, while Pythagoras and Theaetetus—who discovered the icosahedron, the geometric shape with 20 triangular faces—explored the symmetries of geometric figures.

在柏拉图的《会饮篇》中，阿里斯托芬提出爱的缘起就在于对对称的寻觅，而毕达哥拉斯和发现由二十个三角形面组成的二十面体的泰阿泰德则探究几何形体的对称。

In mathematics this conjecture is that the extrinsic geometric properties onsubmanifolds in AdS-space have corresponding Gauge theoretic geometric propertiesin its ideal boundary.

如果用数学的语言来解释AdS／CFT对应则为：AdS-空间中子流形的微分几何性质与AdS-空间中理想边界上的规范场论的几何性质是相对应的。

Basic theory of geometric active contour model is studied. With the virtue that can change the topology freely, geometric active contour model can be used for medical image processing based on curve evolvement and level set method.

根据Mumford-Shah模型利用图像的全局信息、不受图像梯度影响的特点并针对脑肿瘤分割的难点，将Mumford-Shah模型应用于脑肿瘤轮廓的提取，先采用非线性滤波消除噪声的影响，通过优化该模型的能量函数，可以获得受噪声影响的图像的边界。

Result The maximum concentration of those 13 PCBs in mother's milk was 237 ng/g lipoid,the geometric mean was 138 ng/g lipoid;while the maximum and geometric mean concentrations of the 13 PCBs in cord blood were 102 ng/g lipoid and 56.9 ng/g lipoid respectively.

结果母乳中13种PCBs总浓度的最大值为237 ng/g类脂，几何均数为138 ng/g类脂。脐带血中13种PCBs总浓度的最大值为102 ng/g类脂，几何均数为56.9 ng/g类脂。

Under the assumption that a geometric process at the start point follows a lognormal distribution, the statistical inference problem for the geometric process is studied.

在假定几何过程的初始分布为对数正态分布的前提下，研究了几何过程的统计推断问题。

After introducing the basic knowledge of geometric algebra such as outer product,inner product and geometric product,this paper focused on the CGA description and computation with graphic reflection,rotation,translation,rigid body motion and screw motion,and gave the experimental demonstrations.

在简单介绍外积、内积和几何积等基本概念之后，重点论述了共形几何代数在图形反射、旋转、平移等变换和刚体运动、螺旋运动等方面的描述和计算方法，并给出了实验示例。

As a dominant party,CPC government should play a guardian,supervisee and guarantee role to overcome all the difficulties in the development of charitable cause and bring it into full play in the establishment of harmonious society on policies and regulations basis.

在中国共产党的文献中第一次把发展慈善事业提到&最广泛最充分地调动一切积极因素，不断提高构建社会主义和谐社会的能力&的高度来认识。近年来，社会学界对慈善事业的理论专著发表较多，有鉴于此，笔者不揣浅陋，谈谈自己的认识和见解。

Flow through the land, the land of the scale of operation allows the effectiveness of the land may be raised.

通过土地的流转，土地的规模经营可以让土地的效益得到提升。