距离判定

To predict the geometric operational range of an acoustic homing torpedo under different hydrological condition, this paper presents a method to determine geometric operational range by using sound ray density.

为预报声自导鱼雷在不同水文条件下的几何作用距离，提出了运用声线密度判定几何作用距离的方法。

Theoretical analysis proves that,when the pixel number,pixel size and reconstructed wavelength of the hologram are certain,computer simulated algorithms of Fresnel diffraction integral fall into convolution algorithm,angular spectrum algorithm and direct Fourier trans...

通过对相位函数局域空间频率的分析，给出了判定算法适用范围的特征再现距离，并分析得出，再现距离大于特征再现距离时，适合用卷积法；小于特征再现距离时，适合采用角谱法；等于特征再现距离时三种方法都适用。

By measuring the distance between the stable manifold and the unstable manifold of the hyperbolic fixed point in the Poincare map, it is shown whether the system has transversaUy homoclinicpoints and chaos in the sense of Smale horseshoes.

Melnikov方法是用来判定一个系统是否存在Smale马蹄意义下的混沌的一种有效的数学方法，它通过测量Poincare映射的双曲不动点的稳定流形与不稳定流形之间的距离来判定系统横截同宿点的存在性及Smale马蹄意义下的混沌的存在性。

Canine competitors had the distance measured so they could compete for best leaper. Each jump was measured from the end of the dock's runway to the point where the dog's tail landed in the pool.

最后的胜负由参赛狗跳出的距离判定，起点为甲板的边缘，终点为狗落水时尾巴触水的地方。

The core com ponents,including fault location com ponent,time controller,arriving time of directional travelling waves and fault location precision,are analyzed in detail.

就其核心部分——故障测距元件的构成、定时器控制量的选择、方向行波到达时刻的判定以及测量精度的考虑进行了全面的分析，指出了在实现距离测量元件、距离保护段和段中具体的技术关键，提出了有效的对策。

First we construct a covariance matrix from sample images, then compute the eigenvalues and corresponding eigenvectors of the covariance matrix, construct a feature matrix with the eigenvectors. Then every images in database can be projected into the feature matrix and gain a projection vector, so does the input image. Then we can judge the resemblance between input image with each image in database by computing the distance between their projection vectors.

我们首先根据采集的样本图像构造一个协方差矩阵，然后求取该矩阵的特征值，以这些矩阵特征值对应的特征向量构造出一个特征空间，然后将输入图像向该特征空间映射，将获取的映射系数与样本库中图像的映射系数进行距离计算，根据计算出的距离判定输入图像与样本图像间的匹配程度。

In this paper,one privacy-preserving signed distance protocol is presented to solve the signed distance problem based on scalar product protocol.The security and correctness of the protocol are also discussed.And then the privacy-preserving of the triangle intersection with the plane determines is taken as the example to explain its application.

基于点积协议，提出了一个保护私有信息的符号距离判定协议，解决了符号距离的判定问题，然后讨论和分析了协议的安全性与正确性，并且以保护私有信息的三角形与平面相交判定为例说明了其应用。

Furthermore, a optimization model is established to get a necessary and suff icient condition. The arithemetic of the second questino fits the third question as well.

对于第二题，本文发现坐标变换时各点之间的欧氏距离不变，利用各点的距离关系，给出一系列的判定条件，最后用优化算法判定。

Without considering surface covering layer, the surface earthquake dislocation and strain distribution near active fault were calculated under different conditions of magnitude, fault movement style and fault dip angle using 3-D finite element method. Based on above results, the safe distance of active fault to important project site was studied.

：在不考虑地表覆盖层的情况下，采用三维有限元方法计算了不同震级、不同断层活动方式以及不同断层倾角下断层上、下盘地表的地震位移及形变分布，通过设定的安全距离判定标准，研究了各种情况下工程场地距断层的安全距离。

Auto rearview, with distance reference line, you can judge the distance to the obstacles.

自动倒车后视带有距离参考线，更易判定离障碍物的距离

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。