系数矩阵

The superiority of a class of linear estimator with respect to generalized least square(GLS estimator of regression coefficients was studied in terms of the mean square error matrix(MSEM criterion, and the lower bound and super bound of three relative efficiencies were obtained respectively.

在均方误差矩阵准则下研究了回归系数的一类线性估计相对于广义最小二乘估计的优良性问题，并讨论了三种不同相对效率的上、下界。

The high frequency signals and noise signals are first decomposed into three different directions by making use of the 2-dimensional Daubechies wavelet transform to process matrix data with row convolution and line convolution.

利用二维db小波变换对矩阵数据分别进行行卷积和列卷积，把检测数据的高频信号和噪声信号分解在3个不同的方向上，且信号的能量集中在很少的小波系数上。

As before, one first calculates the PCs, then studies the scree plot to determine the number

然后，考虑最小特征值对应的特征矩阵，丢掉那些在这个特征向量上有较大系数的feature。

A matrix display device comprises cavities (20) having walls at least one of which is covered with a material (24) having a secondary emission coefficient of more than unity.

一种矩阵显示装置，包括具有腔壁的空腔(20)，所述腔壁中至少一个腔壁上覆盖了具有大于单位一的二次发射系数的材料(24)。

We compose a neural network in which the input signals are the frame substructure natural frequencies and mode shapes, and output signals are the submatrix scaling factor.

框架子结构在动载作用下的自振频率和模态作为网络的输入，子矩阵参与系数作为网络的输出，用Levenberg一Marquardi算法训练网络。

Fast algorithms for the minimal norm least square solutions of linear equations which coefficients are m×n Toeplitz matrix are given.

给出了求以m×n阶Toeplitz矩阵为系数阵的线性方程组极小范数最小二乘解的快速算法。

Correlation and signal-to-noise ratio of the space sources can affect the resolution of DOA estimation of subspace algorithms. Using this relation, the algorithm changes the correlation and SNR of the equivalent sources by processing the Toeplitz matrix based on the Toep-MUSIC algorithm, so that the resolution of DOA estimation can be improved.

改进算法利用信源间相关性和信噪比对子空间类DOA估计算法分辨力的影响，在Toep-MUSIC算法基础上，通过对Toeplitz重构矩阵的处理，改变了等效信源的相关系数和信噪比，从而使DOA估计分辨力得到提高。

On the basis of the advantages of the previous distillation calculation algorithms, by eliminating the non—zero elements to the two sides of the tridiagonal band of elements in the component material balance equations by correlation of the draw rate from the main column to the sidestrippers and the return vapor stream from the sidestrippers to the main column, it changes these equations into a typical form of the tridiagonal matrix, and uses the simultaneous convergent strategy of the main column and the side strippers to speed the algorithm convergent rate.

在吸收前人蒸馏计算算法优点的基础上，通过求解主塔抽出到汽提塔的量和汽提塔返回主塔的蒸汽流之间的关联，以便消除组分物料平衡方程组系数阵中的三对角线两边的非零元素，使它转化为典型的三对角矩阵形式，而且使用主塔和汽提塔同时收敛策略，加快了算法收敛速度。

Through grey relation estimation matrix, the threat sequencing is transformed into a MADM problem. The algorithm for the weight of each threat criteria is proposed by information entropy to reduce the effect of the extreme numerical value. Applied the grey related projection value, the treat sequencing is carried out from the aspect of vector projection. In addition, the effects of the identification coefficient and the criteria weights on threat sequencing are investigated respectively.

首先通过建立灰色关联判断矩阵将威胁排序转化为多指标决策问题；其次为缩小极端值的影响提出了基于信息熵的威胁指标权重算法；最后从矢量投影角度应用灰色关联投影值进行威胁排序；并分别研究了分辨系数和指标权重对威胁排序的影响。

The covariance matrix of receive data is eigendecomposed. and the signal subspace is obtained. Then the channel vector is projected onto the subspace, and more accurate channel vector is obtained. According to the beamforming algorithm, the detection filter coefficients are calculated.

将接收数据的协方差矩阵进行特征值分解，得到信号子空间，将存在估计误差的信道矢量向该子空间投影，就可以得到较为准确的信道矢量，然后利用波束形成计算出检测滤波器的系数。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。