Metric tensor ; curvature tensor ; asymptotic analysis ; tensor analysis

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In Riemannian manifolds, one studies Riemannian metric, covariant derivative, Riemannian connection, basic properties of the Riemann curvature tensor, curvature forms etc.

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The quantities ba are the covariant components of a plane tensor, called the curvature tensor of the surface

baβ是"平面張量"的協(xié)變分量，叫做該曲面的曲率張量。

They described a method to estimate the tensor of curvature of a surface at the vertices of a triangular mesh.

他們描述了一種在三角網(wǎng)格上任意點估計曲率張量的方法亚洲一区二区三区羽田爱。

Based on the definitions of metric tensor and curvature tensor, the full expressions of their changes are put forward with asymptotic analysis, where the metric tensor change expression coincides with Ciarlet's, and the curvature tensor change expression is described more accurately than Ciarlet's.

提出的度量張量的改變量與Ciarlet給出的一致美国一级黄片的黄色美国的现在能放出来的，而曲率張量的改變量比Ciarlet給出的更精確。

To mathematically characterize the deformation of the middle surface of a shell, the metric tensor and curvature tensor ought to be investigated in detail.

為了從數(shù)學(xué)角度更好地描述殼體中性曲面如何變形狠狠色视频一区二区，通過漸近分析和張量分析一级黄色视频免费下载观看真人视频，給出了當殼體中性曲面發(fā)生形變時度量張量和曲率張量改變量的完整表達式。

This paper proposes a robust filter function, called trilateral filter function, to filter the noises in the domains of surface curvature, normal and position at each sample point while the local surface is fitted in a quadratic form. By optimizing the filtering result of curvature tensor, our approach is capable of preserving the feature on the target model.

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In this paper, a "rigid bar relative movement model" was established to illustrate the traces of the helices in wire ropes. The angular speed of a moving particle of the model was relatives to curvature tensor to derive the curvature components and torsion of helices in multi-layer wire ropes. According to long and thin rod theory of Love and Yen-Chen's theoretical model considered the contact force and frictional force, the force-deformation or force-strain relative of wire in curved wire ropes subjected axial force is derived from the curvature components and curvature increment.

本研究改以剛桿相對運動模型免费视频一区操，直接描述鋼索中鋼絞線軌跡精品无码一区二区视频在线，并且透過角速度類比曲率張量之概念，推導(dǎo)圓弧型多層鋼索內(nèi)部之鋼鉸線之曲率分量與扭率av网页在线观看啦；之后再依據(jù)Love的細長桿理論国产一区二区三区手机在线观看，輔以Yen-Chen在考慮接觸力及摩擦力下所修正之理論模型，以曲率及曲率增量來探討圓弧型鋼索受靜態(tài)荷重作用下91xxxxx在线，鋼絞線之受力與變形或應(yīng)變關(guān)系亚州激情婷婷六月。

Firstly, we introduce the technology of seismic geometric attribute for fault identification detailedly at home and abroad. Secondly we study the coherence, texture,curvature attribute and tricolor display technology of RGB to identify fault; In the part of coherence,we compare the traditional algorithms with model and actual data,mainly study the geometric structural tensor and wavelet multi-scale sub-frequency coherent algorithm; In the part of texture attribute, we introduce texture energy, texture contrast, texture entropy and texture homogeneity attribute.By merging texture attributes of different directions,the effect are more clear; In the part of curvature attribute,we study and analyze fractional-order curvature attribute's extraction and its application in fault identification; The RGB display technology mainly introduces how to merge multi-attributes in order to getting more richer and more clearer information.

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By the research of metric tensor and Riemann tensor on Riemann manifold, we getthe inherent curvature of configuration space belonging to parallel mechanism.

通過對度量張量和Riemann張量的研究，得出并聯(lián)機構(gòu)運動可達子空間的內(nèi)在"彎曲"性質(zhì)免费高清一级片，指出使用相對坐標系和廣義坐標是研究并聯(lián)機構(gòu)運動學(xué)和動力學(xué)問題的必然選擇中文自拍日韩视频在线观看免费。