查询词典 projection gradient method

Detailed studies are made as follows: Searching the key internal factors which can affects slope stability. According to the geological data which was gained by exploration investigation, establishing a geological model which can reflect rock mass characteristics;With analyzing the internal and exterior factors synthetically, the deformation and possible failure mechanism and mode of the cut slopes was confirmed which combines with stereoic projection and other techniques;The stabilities of the 14 high slopes are estimated synthetically by applicable design codes and guidelines. With the estimate result and some other analysis methods, the rock mass mechanical parameters of slope are identified;As a results, 14 high slopes fall into 4 categories based on rockmass characteristics and discontinuities. The stability and deformation of some typical slopes was analyzed with distinct element method by UDEC;The safety factor of some dangerous slopes are calculated by rigid limiting equilibrium method for coMParison.

首先着重研究影响边坡稳定性的内在因素，主要是通过地质勘探、测量、现场观测等手段取得研究区地质体的基础地质资料，建立起能够反映地质体结构特征的地质模型；随后综合分析潜在的内外部影响因素，并结合赤平投影对边坡可能的失稳模式或破坏机制作出判断；运用已有岩体质量分类方法对沿线14个高陡边坡稳定性进行初步的评价，并结合试验研究、经验判断、工程类比等手段确定了坡体的岩体力学参数；根据稳定性初步评价结果将研究区14个高陡边坡按开挖方式分为4大类，并利用离散元程序UDEC对各类典型高陡边坡进行了稳定性计算分析；对潜在危险边坡利用刚体极限平衡法求出了不同工况下的安全系数。

The finite difference method is employed to discretize the governing equations and the projection method is used to derive a pressure Poisson equation that can ensure the satisfaction of continuity equation.

控制方程式采用有限差分法求解，并利用投影法导出压力的波松方程，使得能自动满足连续方程式。

In this paper, a reconstruction method of Electrical Impedance Tomography which based on the method of equipotential back-projection is analyzed in detail.

本文分析了一种基于等位线反投影算法的电阻抗成像方法，并用虚拟仪器LabVIEW软件构建一个虚拟平台，实现了电阻抗成像的图像重建。

The graphic method was used drafting of orthographic projection and the calculating method was mad use of computer.

方法采用正投影绘图的图解法和计算机计算的计算法，方便快捷地解决了一般位置圆周透视的判断问题。

The method combines the inverse dynamics control with the ZMP-plane acceleration projection, whereby the whole body stability of the robot can be considered simultaneously when tracking the predefined trajectories. With this method, the inapplicability existing in the classical control methods in the terms of disturbance rejection and stability maintenance is solved.4 Finally, in order to verify the proposed methods, experiment platforms for the motion planning and disturbance rejection control are constructed respectively.

提出了利用逆动力学控制和ZMP平面的加速度映射相结合的抗干扰策略，在对运动轨迹进行精确跟踪的同时保证系统整体的动态平衡性，解决了经典轨迹跟踪控制方法在抗干扰及稳定性保持等方面的不足。4为验证本文所提出方法的有效性，分别构建了非规则运动规划与抗干扰控制算法的实验平台，详细地介绍了运动生成和运动执行系统的设计与构成。

The method obtained multiple training samples from a single face image by multi channel sampling before two-dimensional independent component analysis transformation. Experimental results on the ORL face database and YALE face database show that the proposed method is feasible and has higher recognition performance compared with GREY, PCA, ICA, 2DICA, projection combined PCA, FLDA, sampled FLDA and other algorithms where only one sample image per person is available for training.

该方法是在2DICA运算之前，首先对单训练样本进行采样，通过多频率采样可以获取多个不同频率下的采样样本，然后对采样样本进行2DICA特征提取，最后采用神经网络分类识别，对人脸库ORL和YEL作了相关实验，将该方法与GREY、PCA、ICA、2DICA、PC PCA、FLDA、Sampled FLDA等传统方法作了比较，最终证明了该方法可以有效地解决单训练样本人脸识别的问题。

With high precision linear CCD as measuring sensor and combining with a mechanical scanning method,a quick measurement for the aperture of wire drawing die is carried out by the parallel light projection method.

采用平行光投影法，以高精度线阵 CCD为测量传感器，结合机械扫描方法，完成对拉丝模孔径的快速检测。

A novel image matching method based on the partial projection entropy difference was proposed. This image matching method has very good anti-geometrical distortion properties.

由于局部投影熵反映的是图像的局部统计特征，因此基于局部投影熵差的图像匹配方法具有较好的抗几何失真能力。

For the case of Zhang-Long expressway Shi Kongsban No.Ⅱ section high rock slope, on the basis of the systematic analysis of engineering geologic properties, Stereographic polar projection method, and Finite Element Method are used in comprehensive evaluation and systemic analysis, by which the slope stability results are obtained, and then are accepted and adopted by design and construction corporations.

针对漳－龙高速公路石崆山Ⅱ段岩质高边坡工程，在系统分析边坡工程地质特性的基础上，采用赤平极射投影法和有限单元法等，进行综合评价和系统分析，获得的稳定性结论，已正常运营使用若干年，反映了系统分析，综合评价方法是成功和有效的。

Second, for removing the influence, we develop the least squares method based on the stereographic projection implemented on a three-dimensional plane. It is described by the expressions:(4.35挆4.39). This method resolves some problem in Multi-sensor alignment on the same platform when the attitude errors are relatively small.

其次为了克服基于二维区域性平面中立体投影所产生的影响，本文推导了基于三维立体投影的最小二乘配准算法，其实现过程见式4.35～4.39，在传感器姿势误差较小的情况下，此算法解决了基于同一平台的多传感器配准中存在的问题。

A strange and mysterious deep sea creature.

一种奇异、神秘的深海生物。

It's a yellow rectangle .

这是黄色的长方形。