quadric

Based on study of relationship between the average quadric error and the surface curvature, a variable resolution surface reconstruction algorithm was proposed.

在研究平均二次误差与曲面曲率关系的基础上，提出了变分辨率的曲面重建算法。

The optimal control for linear generalized system based on target function of linear quadric form

基于二次型性能指标的广义线性系统的最优控制

The cable curves at cable finish stage, which utilizes equal rise of the quadric curve or the catenary curve, bring little difference to static and dynamic behaviors of suspension bridges.

对于空缆状态下的主缆线形，采用矢高相等的二次抛物线型还是采用悬链线线型，对悬索桥的静动力行为产生的差异不大；

Using seismic attributions for quadric programming inversion of porosity parameter

利用地震属性二次规划反演孔隙率参数

Several Properties about the Tangent Plane of the Family of Quadric Surface

一类二次曲面族的切平面的一些性质

Research on the Algorithm to Generate Progressive Mesh with Color Based on Quadric Error Metric

基于二次误差测度的递进网格色彩模型生成算法

Structure Design of TSK network: an Local Recurrent Network Based on Quadric Operation

TSK网络结构设计：一个基于二阶运算的局部反馈网络

The Definite Value of Quadric Curve Fulltime Killer

二次曲线的定值全职杀手

Extracting quadric surface from measured data is an important problem in reverse engineering of mechanical parts.

在机械产品的逆向工程中,针对测量数据提取常用二次曲面是非常重要的.

A new method is offered to extract quadric surface based measured points for reverse engineering.

为逆向工程中基于测量点的二次曲面提取提供了一种新的方法.

Set the target value and signal error, the optimal state-feedback coefficient matrix and feed-forward coefficient matrix FR and FD of target signal and disturb signal are educed via error equation and quadric value function which includes error term and input term.

设定目标值和误差信号，通过误差系统方程和含有误差项和输入项的二次型评价函数导出系统最优状态反馈系数矩阵、目标值FR和干扰信号FD的前馈系数矩阵。

New Extensions of Quadric B é zier Curve with Multiple Shape Parameters

带多形状参数的四次Bézier曲线的新扩展

The regulative effect of lime application on N, K contents, Ca2+-ATPase and sugarcane height resembled quadric curve.

石灰施用量与甘蔗叶片N、K含量、Ca2＋－ATP酶活性及甘蔗株高里极显著或显著的二次函数曲线相关；

Simulation proves the favorable identification ability of our network for dynamic system, which means quadric operation is one feasible mode in the structure design of recurrent TSK networks.

系统辨识的仿真证明本文网络可以很好地辨识动态系统，表明TSK网络拓扑结构设计中使用二阶运算是可行的。

Then, we introduce some basic concepts of mesh surface, mesh simplification, and we also present the surface simplification algorithm using quadric error metrics ( QEM) in detail.

然后介绍了网格曲面和网格简化的一些基本概念，并详细介绍了基于二次误差度量的边折叠网格简化算法。

An algorithm of feature surface recognition based on quadric surface fitting and geometry property was presented.

提出了基于二次曲面拟合误差分析和几何属性分析的特征曲面识别算法.

Application of the intromittent bridge plug in quadric well cementation

可插入式桥塞在二次固井中的应用

Solution of conditional extremum of quadric form on hypersurface by using the matrix method

二次型在超曲面上条件极值的矩阵解法

We call this surface the stress quadric.

我们称这个曲面为应力二次曲面.

The traditional hydraulic technology of test depends on the manual operation, and the way of data collection is sensor and simulation quadric meter.

传统的液压测试技术主要依靠试验操作者手动操作，数据采集方式为：传感器+模拟二次仪表。

Skewed symmetry detection of quadric surface solids under orthographic projection exploration of CAI in engineering drawing& to analyse the trend of intersecting lines of two stereoscopic cambers

正交投影二次曲面立体图的斜置对称面检测（英文）工程图学中计算机辅助教学探索&两曲面立体相交趋势分析

Problems on Quadric Equations in Chinese Ancient Mathematics

古算中的一类二次方程问题

The expression of a tangent cone family with one parameter about a quadric surface is discussed.

讨论了二阶曲面的单参数切锥族的表示方法,导出了单参数切锥族的包络面的方程.

With the Lagrange multiplier method, the minimum distance of the center of a circle and a quadric surface was provided and the tangency condition of curve and surface was given.

利用拉格朗日乘子法求解二次曲线和二次曲面之间的最小距离，给出了曲线与曲面相切的条件。

In this paper, the author gives the formula of roots of a quadric equation over a field of2 k elements and presents the problem.

利用一元二次方程的求根公式构造二元二次方程组的迭代算法，通过图解二元二次方程组的解来说明迭代算法在实践中的应用。

A new forward-secure proxy signature scheme is proposed. The scheme is proven to be forward secure based on the assumption of the logarithm, quadric remain problems in the random oracle model, Further more, security analysis of the proposed scheme is presented.

该文提出了一种前向安全的代理签名方案，该方案基于零知识证明协议，在离散对数和二次剩余问题困难性的假设和随机oracle模型下系统是安全的。

In the paper, inference the position, velocity and acceleration of the driven bar of quadric crank chain when the driving bar are derived, and a computer program based on MATLAB is compiled to simulate the linkage curve, position, velocity and acceleration.

推导铰链四杆机构在主动件处于不同位置时从动件的位置、速度和加速度关系，并编制相应的程序，基于MATLAB对连杆曲线、位置、角速度及角加速度进行计算机运动仿真。

Based on the quadric OPENGL screensaver program code, involving the rendering quadric algorithm with texture mapping.

基于OPENGL的二次曲面屏保程序代码, 涉及二次曲面的绘制与纹理映射算法.

Projective Classification of Quadric Hypersurface in Real Projective Space

实射影空间中二阶超曲面的射影分类

The starting and shifting dynamics models for double clutch transmission ( DCT) are built, and linear quadric optimal control theory is used to study the engaging and disengaging laws of clutch.

建立了双离合器式自动变速器起步、换挡动力学模型。利用线性二次型最优控制理论研究了离合器接合、分离规律。