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Experimental results show the recognition rate of the method is 95%for a known expresser and 72% for a novel expresser. Aiming at the shortcomings of optical flow technique,two improved optical flow algorithms are presented.One way is to introduce forward and backword constraint eqution and Hessian matrix of optical flow equation is computed.The well- posedness of each point of local neighbourhood is examined and the weight of Lucas-Kanade's method is defined as the reciprocal of the conditioning number of its Hessian Matrix.

3针对传统光流法的缺点，分别提出了两种不同的改进方法：其一为引入前向-后向光流方程，计算其Hessian矩阵，把Hessian矩阵条件数的倒数作为Lucas-Kanade光流法的加权阵，可有效消除局部邻域中不可靠约束点，同时提高基本约束方程解的稳定性；其二为针对传统光流法只适用于刚体运动的特点，在扩展约束光流方程的基础上引入了div-curl样条函数作为扩展光流约束方程的附加约束条件，给出了一阶和二阶div-curl样条约束下光流的数值解。

It enables one to count the number of frequencies exceeded by a given trial frequency. On the basis of the method. Professor Qi has got a new criterion for detecting the eigenfrequency by using the physical meanings of the matrix used in the congruent transformation of the dynamic stifmess matrix.

在此基础上，齐朝晖教授充分利用将结构动刚度矩阵合同变换过程中各矩阵的物理含义，提出了求解结构固有频率的新判据。

Based on censored data, a smoothing estimation method is proposed to estimate the parameter functions. Moreover, a consistent estimator for the asymptotic variance matrix of the estimators is provided. The limiting distribution of estimated functions and the estimator of variance matrix enable us to construct approximated regions.

根据截切资料，我们提供平滑估计法以便估计参数函数，接著，我们也对估计函数的变异矩阵提出一个估计式，利用估计式的常态分配逼近，其相对应的信赖区间建构法也被提出。

Furthermore, it is proved that convex combination of judgment matrix addition and convex combination of Hadamard multiplication in group AHP can remove the influence of subjective factors, and keep and improve the consistency of judgment matrix.

文中定义了具有实际意义的矩阵"加法"、"乘法"、"指数"运算，指出了这些运算的性质；给出了判断矩阵"加法"凸组合及Hadamard"乘法"凸组合的概念，并证明了在群体AHP中判断矩阵的"加法"凸组合及Hadamard"乘法"凸组合不仅能消除主观因素的影响，而且还能保持和改善判断矩阵的一致性。

Keywords Closed convex cone;gradient projection method;Least-squares solution;Inverse matrix problem;Inverse eigenvalue problem;Matrix completion problem;Optimal approximation

Article From 湖南大学；应用数学博士论文 2005年度闭凸锥；投影梯度法；最小二乘解；矩阵反问题；矩阵逆特征值问题；矩阵完全化；最佳逼近

Changes of lung ultrastructures: The results of electron microscope showed that in group 1, there were swelling mitochondria was arranged in disorder, less matrix, and hyalomere appeared, thin double-deck membrane in 50% samples: Interalveolar septum stroma was with edema in 60% samples; Polymorphonuclear leukocyte gathered in vessel or emigrated out of vessel in 50% samples; In group 2, double-deck membranes of mitochondria were integral, densely matrix showed micro-granule shape in 90% samples; Pinocytosis in epithelial cells of type Ⅰ lung strengthened, being destroyed, and pinocytosis in endothelial cells strengthened in 10% samples; lnteralveolar septum stroma was with edema, no polymorphonuclear leukocyte gathered in vessel or emigrated out of vessel or corpuscule was empty in type Ⅱ alveolar epithelium in 20% samples.

肺组织超微结构改变观察：纯氧机械通气组50%标本线粒体肿胀、排列紊乱，基质变浅，出现透明区，双层膜变薄，60%标本肺泡隔间质水肿，50%标本多形核白细胞血管内聚集或游出血管外现象；34%氧浓度机械通气组90%线粒体双层膜较完整，基质致密呈细颗粒状；10%标本可观察到Ⅰ型肺上皮细胞有吞饮增强、破坏及内皮细胞吞饮增强；20%标本肺泡隔间质水肿；未见到多形核白细胞血管内聚集或游出血管外现象及Ⅱ型肺泡上皮板层小体排空。

CvEM::COV_MAT_SPHERICAL - a covariation matrix of each mixture is a scaled identity matrix,μk*I, so the only parameter to be estimated is μk.

每一个混合的协变矩阵都是全N阵，即μk*I，一次唯一的参数就是μk。

The size of the equivalent stiffness matrix of the outer-domain is only related to the number of the crunode in the interface between inner-and outer-domain,so the final stiffness matrix has a very small size.The numerical results agree well with the analytical solutions and the present method is simple,quick and has a good convergence.

无限相似单元法是无限剖分与有限元方法的结合，它打破了有限元法的限制，把计算域剖分成无限个"有限"大的单元，同时采用一些数学方法，解决了求解无穷多个单元的问题[3—11]。

The algorithm constructs a new matrix called spatial signature matrix in cumulant domain by application of eigen decomposition.

该算法构造了累量域空间特征矩阵，通过对空间特征矩阵的特征分解得到用户信号的空间特征估计。

The clear water that day of the 2-3 that irrigate air wants when watering is advisable, and when watering, should irrigate in plant ' cup ' in shape, in irrigating the matrix in flowerpot directly, even if slant in the matrix inside the basin dry, xie Beizhong has the word of water, plant still grows good, but if be the humidity in basin earth only big, and Xie Beizhong is anhydrous a plant is lacklustre, occurrence leaf easy hair is yellow wait for harmful response.

浇水时要浇晾2-3天的清水为宜，且浇水时要浇在植株的'杯'状中，不要直接浇在花盆的基质中，即使是盆内基质中偏干，叶杯中有水的话，植株依然生长良好，但假如只是盆土中湿度大，而叶杯中无水则植株无生气，出现叶子易发黄等不良反应。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。