正定

By singular value decomposition of the separating matrix, we present a novel independent-component-analysis -based contrast function for BSS, which is a generalization of the existing determined and overdetermined ones.

首先从分离矩阵的奇异值分解出发，提出一种新的基于独立分量分析的盲信号分离对比函数，它是现有的正定和超定盲信号分离对比函数的推广。

CREDIT IS SOUL OF ENTERPRISE AND QUALITY IS ITS LIFE. Pingle Group has assessed certificate of registration for ISO9001:2000 Quality Management System.

河北苹乐集团创建于1991年，座落在旅游名城正定，是一家集科研、开发、设计、制造、销售于一体的股份制企业。

This paper studies CPC algorithm for semidefinite monotone variational inequalitiesab.

研究关于单调半正定变分不等式的CPC算法。

Stage multisplitting symmetric positive semidefinite matrices is obtained.

较深入地讨论了对称半正定矩阵的二级多分裂方法。

Numerical algebra ; matrix ; equation ; symmetric positive semidefinite solution

数值代数；矩阵；方程；对称半正定解

Another way infixing R2 into the M-V model results in violating the restriction of the M-V models, which the covariance matrix must be positive definite matrix, and then leads the performance of the portfolio to be worse eventually.

而另一种方式权重配置方式，将R2嵌入M-V模型方式所得出的结果，则违反了M-V模型的限制条件之一，即所变化后的共变异矩阵违反了正定的限制，最后使得投组的绩效变差。

As a natural result, the mass matrix is a positive definite consistent and time-independent one, and the two time-dependent and nonsymmetric matrice, that is, the "gyroscopic damping" and "centrifugal stiffness" ones, don't exist in the equation.

在不附加任何&运动学&假设的情况下，作为自然的结果，方程的质量阵是正定、协调的常数阵；方程中不存在两类时变的非对称系数项，即所谓的&陀螺阻尼&项和&离心动刚度&项。

With this method, the nextto-leading order Debye screening mass was evaluated within real time hot QCD. Since the gluon damping rate was included self-consistently on the internal line of the self-energy, the infrared divergences were removed without putting by hand in a nonperturbative magnetic mass as a cutoff, and the results are positive and gauge-independent. In addition, the selfconsistent calculation method of the damping rates of the fast moving particles in a QGP was suggested, the self-consitent equations were derived at finite tempeature without infrared divergences, and the approximation solutions were shown. Meanwhile the relaxation times of the gluons and quarks were estimated as τ〓～0.7fm/c and τ〓～1.5fm/c at energy scales of RHIC and LHC.

用这种自洽方法从实时热QCD出发用计算了QGP中次带头阶Debye屏蔽质量，由于自洽包含了胶子自能内线中横胶子的衰减率，克服了红外发散的困难，不必用手加的非微扰磁质量作截断，证明了得到的结果是正定的且规范无关，同时本文给出了QGP中快速粒子衰减率的自洽计算方法，推出了有限温度下快速粒子衰减率的自治方程且红外发散不出现，给出了方程的近似解，并估计了RHIC和LHC能标下胶子和夸克的弛豫时间分别为τ〓～0.7fm/c，τ〓～1.5fm/c。

This paper suggest a method to minimize σ and σσ[V-1] under the constraint of pole assignment, where P is the selution to'P+P=-2In, and V is the eigenvector matrix of A+BF.

摘要本文讨论在极点配置的约束下，使σ和σ·σ[V-1]极小化的问题，其中P是'P+P=-21n的正定解，V是A+BF的特征向量矩阵。

In her eyes, because that is the doorway toher heart * the place where love resides.

女人的漂亮必須從她的眼睛中去看，因為那是她心靈的窗戶和愛居住的地方

I will send some postcards to you.

我会向你发送一些明信片。