查询词典 normalized vector

Aimed at the problem that the traditional support vector machine cannot adapt itself to text database updating continuously from time to time, a text categorization algorithm with increment al SVM was presented after analyzing the KKT qualification of newly added text sets and thoroughly investigating the variation of support vector set due to text addition.

针对传统SVM无法适应文本数据库随着时间不断更新的问题，通过对新增文本集的KKT条件的分析，研究了加入新增文本集后支持向量集的变化，提出了使用增量SVM进行文本分类的算法，并通过实验验证了通过该算法得到的分类器和传统分类器有着相似的分类能力和泛化能力

Coli genome was amplified by using PCR method. The PCR product was cloned into PUC19-T vector and sequenced. In addition, the Mn-SOD protein expressed by pET-28a vector and purified was injected into rabbits to prepare polyclonal antibody. Western-blot was used to detect the effect of polyclonal antibody.

coli基因组中扩增Mn-SOD基因编码区，将它克隆到原核表达载体上进行大量表达和纯化，再用纯化的蛋白对新西兰大白兔进行背部多点注射，40d后取其血清，用Western-blot印迹实验测定抗体效果。

Methods: The coding region of superoxide dismutase was amplified using PCR method from the E.co1i genome. The PCR product was cloned into PUC19-T vector and sequenced. In addition, the cloned coding region of Mn-SOD was inserted into the expression vector PET-28a to form the recombinant plasmid PET-28a-Mn-SOD and was then transformed into E.coli BL21 for expression.

用PCR方法从大肠杆菌2号基因组中扩增Mn-SOD基因编码区，克隆到pUCm-T Vector，测定核苷酸序列；再将基因编码区克隆到原核表达载体PET-28a，构建含Mn-SOD基因的重组表达质粒，转化到大肠杆菌BL21中进行IPTG诱导表达。

objective: to achieve the soluble expression of mn-sod gene in e.coli and assay the enzyme activity of the expressed product. methods: the coding region of superoxide dismutase was amplified using pcr method from the e.coli genome. the pcr product was cloned into puc19-t vector and sequenced.in addition,the cloned coding region of mn-sod was inserted into the expression vector pet-28a to form the recombinant plasmid pet-28a-mn-sod and was then transformed into e.coli bl21 for expression.

超氧化物歧化酶(superoxide dismutase，sod)是细胞体内歧化超氧阴离子自由基(o-2)的一个抗氧化酶，按其结合的金属性离子根据其中金属辅基的不同可分为4类：cu/zn-sod、mn-sod、fe-sod和ni-sod，它们通过催化超氧阴离子自由基0-2发生歧化反应，达到清除o-2的效果，具有防御氧毒性、增强机体抗辐射损伤能力、防衰老以及治疗某些肿瘤、炎症、自身免疫疾病等功效，广受国内外科研工作者的关注和重视[1]。

Results Vector algebra and vector analysis are the production of quaternions and the result of seeking mathematical indication of physical phenomenon, it′s the historic certainty as well as the effect of some accidental elements.

结果现代向量系统是从四元数发展而来的，是寻找物理现象的数学表示的结果；通过对哈密顿四元数与格拉斯曼系统的对比分析指出其历史的必然性。

Vector algebra in 3D, vector- valued functions, gradient, divergence and curl, Taylor series, numerical methods and applications.

三维向量代数、向量值函数、梯度、散度和旋度、泰勒级数、数值方法和应用。

A vector bundle including zero vector must be linearly dependent.

所以，当m为偶数时，此线性方程组有非零解，向量组线性相关

This paper discusses kinematic analysis of plane linkages using matrix methods in combination with vector calculus and presents the methods for solving a set of vector equations using approach methods of linear revision.

本文应用矩阵和向量计算相结合的方法，讨论了平面连杆机构的运动分析，并且给出了应用线性修正方法求解联立向量方程组的方法。

A new dynamic vector Preisach model that takesaccount of the anisotropic characteristics of media and vector reversible component ispresented.

第五章对旋转磁滞问题和交变磁滞问题进行了研究，分析了一些典型的交变磁滞模型，提出了一个新的考虑媒质各向异性及矢量可逆行为的动态矢量Preisach模型。

The paper based on component technology and COM, study and design the vector graph component, realize the function of vector graph, such as the input and output of map, the display of map, mutual plot with mouse, etc.

本文以组件技术和组件对象模型(COM，Component Object Model)为基础，研究和设计GIS矢量图形组件，实现GIS系统的矢量图形功能，如地图的输入输出、地图的显示、鼠标交互绘图等。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。