不变性

The singular value decomposition of wavelet transformation module maximum value matrix is proposed.

提出了基于小波变换模极大值矩阵奇异值分解的方法，用该方法获得的奇异值特征矢量作为信号的特征可以压缩特征维数，而且更容易进行计算机自动识别，同时还具有时间平移不变性的突出优点。

Some important properties of singular value vector of color face image were proved, and then it was extracted as algebraic feature and applied to color face recognition.

首先证明了彩色图像的奇异值向量具有代数和几何不变性；然后将其提取为图像的代数特征并应用到人脸识别中。

The algebraic and geometric invariance of singular value vector is firstly given,and then singular value vector compressed is extracted as the image feature,then RBF neural network is used to training and recognition.

首先说明了彩色图像的奇异值向量具有代数和几何不变性，再将降维的奇异值向量作为图像的特征，然后应用RBF神经网络进行训练和识别。

In this paper,a review on the recent studies of the spectra of complex networks has been presented.First,we introduce relations between the spectral density and the structure of the three important network models and the applications in the centrality and bipartivity.Next,we describe the scaling invariance property of the spectral series and ...

本文总结了近年来在网络特征谱方面的研究进展，首先介绍了3类重要网络模型邻接矩阵的特征谱密度和网络结构的关系及其在网络中心性和二分性中的应用，接着介绍了谱序列中存在的标度不变性和结构涌现，然后介绍了网络Laplacian矩阵的特征谱与网络同步之间的关系以及在分析网络社团结构中的应用，最后指出了进一步研究的方向。

A new kind of method for recognition of planar object is presented based on steerable filters .

提出一种基于方向可变滤波器的平面物体射影不变性识别方法。

The local superlinear convergence of line search type algorithm are proved under some condition.

本文在理论分析了相关算法的对称正定性及线性不变性，并证明了满足一定假设条件下线性搜索型算法具有局部超线性收敛性。

Based on the principle of surface development in differential geometry, the method of development for cone and tangent surface is given. Cone is developed in the unit ball way.

锥面的展开是利用单位球方法，确定直母线与平面上过定点射线之间的映射关系，进而展开曲面；切线曲面的展开则利用准线曲率在展开中的不变性，确定准线在平面上的展开曲线，再作与之相切的直母线，从而实现曲面的展开。

It is emphasized that the key problem in tensor analysis is to establish the mathematical equations of physical laws which are invariable when the coordinate system is changed.

在数学上将客观定律用量的分量形式表达为对坐标系具有不变性的方程，是张量分析所要解决的核心问题。

This paper combines the internal variable theory and the tensor function representation theory to establish the constitutive equations of the deformation theory and the increment theory for the isotropic and rate independent materials.

在内变量理论的框架下，针对各向同性率无关材料，使用张量函数表示理论建立了塑性应变全量及增量本构关系的最一般的张量不变性表示。

Due to their relative tiny inertia but fast dynamic response capacity, each hydraulic actuator is negatively influence by other actuator through the testee on the test bench.

结构不变性解耦算法能够降低加载系统对被试验件的感度，提高了系统的适应性能，可以大幅度减轻负载变化对系统特性的影响。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。