查询词典 strain tensor

Coussy's poroplastic theory is used for the extension of this model to describe poromechanical coupling of chalk. According to the general framework of poro-elasto-plastic modelling, the concepts of the effective stress tensors, especially the concept of plastic effective stress tensor, are discussed.

基于这一认识，将Coussy孔隙塑性理论扩展用于研究饱和白垩岩的孔隙塑性力学特性，根据孔隙弹塑性力学的一般框架，讨论在弹塑性域上有效应力尤其是塑性有效应力概念的有效性。

It is the first time to give the formulae of non diagonal matrix elements of tensor operator s which can be employed to describe the ro vibrational interaction for linear tetratomic molecules.

利用Lie代数方法研究了四原子分子振转相互作用，在代数框架内首次给出四原子分子振转相互作用的张量算子非对角矩阵元的表达式，利用这些表达式对线型四原子分子HCCF振转相互作用的l doubling进行了计

In this paper, a new method was provided to estimate image features in the third image based on the trifocal tensor, and, obviously, it is continuous and development of the former.

实验结果证明了该方法的可靠性1 引言关于从已知的前两幅图像的图像特征中估计第3幅图像的特征这一问题。已经有许多人从不同角度作过研究[1，2 ] 。

This paper studies the trifocal tensor and uses it to match the features of image sequences,then through experiment shows that this method can effectively improve the rate,the points and lines of correctly matching.

本文对三视张量进行了研究，将其用于序列影像的点、线匹配，并通过试验证实了该方法能有效提高点、线匹配的正确率。

This paper presents a head detection and trifocal tensor pointer transfer based multi-camera collaboration.

针对复杂遮挡环境下多摄像机协同的问题，提出一种基于三焦点张量点转移的多摄像机协同目标定位方法。

In this approach, people's head position is detected after background subtraction and tracked by Kalman and PDA. Trifocal tensor transfer is used to locate objects in the virtual top view by the corresponding head points in two camera views.

该方法利用单摄像机视图中头部检测的结果进行对极匹配，然后利用虚拟顶视图和摄像机视图之间的三焦点张量关系进行点转移，确定行人在虚拟顶视图中的位置。

Computer vision; 3D reconstruction based on images;camera calibration; texture resume; epipolar geometry; trifocal tensor

论文导师孙济洲，论文学位硕士，论文专业计算机应用论文单位天津大学，点击次数 4，论文页数 71页File Size2178K

In degraded PSM matching classification, errors modification method of degraded PSM is presented and the matching tensor of every canonical scattering centers is given. In Chapter 4, the theory of wideband millimeter-wave radar target identification is introduced. It is indicated that, for HR radar target identification, description of temoral relations among features and pattern recogntion adaptive to variation of target angles are of key importance. A rule-based pattern recogniton method of sequential reasoning is proposed, which uses a series of rules to describe relations of features variation caused by target angles variation and has the advantages of adaption to unrandom variation and false probability control in classification over traditional statistical pattern recognitiop method. Feature extraction is crucial step in target identification. In range profiles identification application, features are extracted by means of range domain pre-processing algorithm, spacial and amplitude visual computation directly from range profiles and transform algorithm based on range profiles. Visual or transformed features are either sufficiently convinced or necessarily convinced and both of them are effective and robust to range profiles identification.

在第四章，首先对宽带毫米波体制背景下目标识别方法的一些特点进行了阐述并指出，在毫米波雷达目标识别中，特征之间动态关系的描述以及能适应目标姿态角变化的模式识别方法的研究乃是要解决的关键问题；进而提出了一种基于规则库的序贯推理模式识别新方法，在这种方法的研究中，主要包括序贯推理规则库的规则排列与特征选用顺序以及规则库的收敛等问题；这种方法克服了传统的统计模式识别方法特征利用效率不高、难以适应特征值的非随机性变化的缺点，把姿态角变化所引起的特征的变化用一系列规则加以表示，其优点是能适应特征值的非随机性动态变化，并能控制分类过程中的差错概率α；特征抽取是目标识别中的关键步骤，在基于目标距离像的特征抽取方法研究中，提出了距离空间域的预处理算法、距离空间域与幅度域的直观特征抽取方法以及基于目标距离像变换分析的特征抽取方法。

Objective: To explore the value of the diffusion tensor imaging in diagnosing Wallerian degeneration.

目的：探讨磁共振弥散张量成像技术(diffusion tensor imaging， DTI)在Wallerian变性中的诊断价值。

To explore the value of the diffusion tensor imaging in diagnosing Wallerian degeneration.

目的：探讨磁共振弥散张量成像技术（diffusion tensor imaging， DTI）在Wallerian变性中的诊断价值。

The dissecting of samples in group2 were difficult. The root of pulmonary artery and ascending aorta failed to be unfolded because fibrous tissue was tough, right and left fibrous trigone were too firm to be solved by hand. Cardiac muscle fibers couldn't be stripped along myofibrillar trajectory since they were prone to break because of their friability.

组2的心脏解剖困难，表现为纤维组织坚韧，游离肺动脉非常困难；徒手无法松解左、右纤维三角，肺动脉和主动脉根部的游离非常困难；心肌纤维坚硬、质脆，解剖时容易断离成碎块，无法沿纤维走行方向剥离。

We have battled against the odds in a province that has become increasingly violent.

我们对在一个争夺日益激烈省的可能性。