matrix n. (pl. matrices 或matrixes) 1.【解剖学】子宫;母体;发源地,策源地,摇篮;【生物学】衬质细胞;间质;基质;母质。 2. 【矿物】母岩;脉石;【冶金】基体;【地质学;地理学】脉石;填质;杂矿石。 3. 【印刷】字模;型版,纸型;铸型,阴模。 4.【阵】(矩)阵,方阵;母式;【物理学】间架;【无线电】矩阵变换电路。 5.【染】原色〔红黄蓝白黑五种〕。 the matrix of a nail 【解剖学】指甲床。
theory n. 1.理论,学理,原理。 2.学说,论说 (opp. hypothesis)。 3.推测,揣度。 4.〔口语〕见解,意见。 the theory of two points 两点论。 Darwin's theory of evolution 达尔文的进化论。 theory of equations 【数学】方程论。 theory of everything 【物理学】(把相对论、量子论和宇宙大爆炸理论都包括在内的)万用理论。 theory of relativity 【物理学】相对论。 the atomic theory 原子说。 Our scheme is good both in theory and in practice. 我们的方案在理论上和实施上都是好的。 combine [separate] theory with [from] practice 理论结合[脱离]实际。 My theory is that we must bring new blood into the Institute through appointment of younger men to important positions. 我的意见是我们学院应该通过重用年轻一些的人来注入新的血液。 theory of games 博弈论,对策论,权衡利弊得失的形势分析。
And the procedure of solving initial prestress by equilibrium matrix theory and simplified method are elucidated . the self - stress mode of sunflower - patterned cable dome must be positive , and the mechanisms mode equals to zero . it seems like statically indeterminate structures and is geometrical stable structure 明确了葵花型索穹顶结构形态分析的具体内容;阐述了用平衡矩阵理论和简化算法求解索穹顶结构初始预应力的过程,指出葵花型索穹顶结构的自应力模态s 0且机构位移模态m = 0 ,相当于结构力学中的超静定结构,同时它也是几何稳定的结构;提出了考虑结构自重时葵花型索穹顶结构初始预应力的求解方法,这种方法求得的初始预应力更加准确。
In order to analyze the structure conditions of the company ' s products more intensively , this dissertation aimed at the representational 5 kind products of the hs medicine company respectively adopt three analyze tools , the boston matrix theory , ge matrix theory and products combination analysis to analyze the existing products from three points of view and comes to the three main conditions existing in the structure aspect of enterprise ’ s products , that is ( 1 ) if the competition ability of the rhinitis - easy 为了更加透彻的分析该公司的产品结构情况,本论文针对hs药业公司有代表性的5类产品为对象,分别采用波士顿矩阵、通用电器( ge )矩阵法和产品组合分析法三个分析工具从三个不同角度对现有产品结构进行分析,得出企业在产品在结构方面主要存在三方面的现状,即,若未来鼻炎舒产品出现竞争力下降情况,企业将没有现金流产品来支撑公司发展。
Based on the lorentz transformation on especial condition , making use of coordinate transformation and matrix theory , the matrix expression and vector expression of lorentz transformation about two inertial frames that relative speeds orientation is random and isnt follow axes of ordinate are educed . 2figs . , 3refs 从特殊情况下的洛仑兹变换出发,利用坐标变换和矩阵理论,导出了两个惯性系的相对运动速度取向任意,且不沿任一坐标轴洛仑兹变换的矢量表达式和矩阵表达式.图2 ,参5
Some modeling of maneuvering target tracking is introduced in this thesis , and current statistical model is used as a basic target model . the arithmetic of kalman filtering based on the model is listed . on the foundation of state vector optimal estimation error matrix theory , the arithmetic of optimal estimation is presented , and target tracking simulation is taken 本文首先介绍了几种常用的机动目标跟踪模型,并把现在较为常用的“当前”统计模型作为本文研究的目标模型,并列出了基于该模型下的卡尔曼滤波算法;此外,在状态矢量最优加权估计理论的基础上,引入了目标状态最优估计误差协方差矩阵,提出了一种最优加权估计算法,并进行了目标跟踪仿真。
The paper makes reference to the theories about organization structure innovation and the experiences of some native and foreign universities , such as mit , nagoya univ , zhejiang univ . aims at the abuses of the functional structure , brings forward the meshwork structure of discipline that is based on matrix theories 本文在借鉴组织结构的相关理论以及美国麻省理工学院、日本名古屋大学、浙江大学等国内外高校学科组织结构创新的相关经验的基础上,针对直线职能制学科组织结构的弊端,提出了基于矩阵结构的大学学科组织结构构想。
By using matrix theory and the theory of finite fields , we study the applications of projection matrix , permutation matrix , difference matrix , hadamard product , the generalized hadarnard product , kronecker product , kronecker sum and the generalized kronecker sum to construction of orthogonal arrays 本文利用矩阵理论和有限域理论,研究了投影矩阵、置换矩阵、差集矩阵、 hadamard积、广义的hadamard积、 kronecker积, kronecker和、广义的kronecker和在构造正交表方面的应用。
This thesis is part of the project of national science foundation of china “ study on color video coding based on four - dimensional matrix ” . a multi - matrix theory model has been established in the project . and the color video is presented into a four dimensional matrix model and the four - dimensional discrete cosine transform ( 4d - mdct ) is applied to reduce the correlation between color components and adjacent pixels 将多个彩色视频帧构建在一个四维矩阵模型中进行运动补偿预测、四维矩阵离散余弦变换和矩阵量化,最后利用基于上下文的变长编码方法进行压缩,以全面去除彩色视频各象素之间、各彩色分量之间以及连续帧之间的相关性,从而实现高信噪比条件下的高倍压缩。
First of all , the algorithm base on the boundary problem of helmholtz equation and finite - difference technique , calculate the field in “ cold ” cavity and disperse the helmholtz equation , as a result of the formula : ax = x . secondly , according to the eigenvalue of matrix theory and applied iterative methods , eigenmode adopt a numerical approach which allows the improved chebyshev polynomial iteration which based on the power method to extract the isolated eigenmode in the spectrum . finally , we resolve the problem of compatibility in software and insert the eigenmode module into the chipic which will have the function of eigenmode analysis 具体的说: ( 1 )首先以电磁理论中的亥姆霍兹方程的边值问题理论和计算电磁学中的有限差分法为基础,计算冷腔中的场分布并离散亥姆霍兹方程,得到标准的本征值问题: ax = x ; ( 2 )然后根据矩阵理论中的eigenvalue问题和数值计算中的迭代方法,采用改进后的chebyshev多项式,在power迭代法的基础上对ax = x进行多项式迭代,实现对频谱中孤立本征模的萃取; ( 3 )最后将用fortran语言编制的eigenmode模块加入到chipic软件中,解决了eigenmode模块与chipic主代码的兼容问题,从而实现了chipic软件的模式分析功能。
Witten ' s open string field theory formulate the interaction of bosonic open strings in the language of noncommutative geometry . compactification of matrix theory on the noncommutative torus was argued to correspond to supergravity with constant background three form tensor field . more generally , it has been realised that noncommutative gauge theory arises in the worldvolume theory on d - brane in the presence of a constant background b field in string theory Witten的开弦场论用非对易几何描述了玻色开弦的相互作用;在非对易torus上的矩阵理论的紧化对应于带有常数三形式张量场的超引力;更为普遍的,非对易规范理论可以自然地产生在带有常数b背景场的三维d - brane上。