矢量计算

In this paper, we analyse the features of bicircular arc interpolation algorithm which isoften used in numerical control manufacturing.

本文在分析数控插补最常用的双圆弧插值算法特点的基础上，将以局部坐标系中的三角运算为核心的传统双圆弧插值算法，改造成为以整体坐标系中的线性运算为核心的矢量形式的双圆弧插值算法，从而减少了计算的复杂性和程序的复杂性，提高了效率和可靠性。

SIA degree in phacoemulsification with 3.2mm clear corneal incision has no connection with incision positions. Corneal curvature at incision meridian will be released, but another meridian has no distinct effect. The SIA analyzed by Jaffe/Clayman vector method will provide an important reference for toric IOL implantation surgery.

3.2mm透明角膜切口SIA的度数与切口位置无明显关系，切口对所在子午线角膜曲率有松解作用，对与切口垂直子午线角膜曲率无明显影响，矢量公式法计算所得的SIA值在散光型人工晶状体植入术中提供了重要的参考价值。

This method is featured with high estimating performance and little computation burden by n o aperture losing and temporal smoothing. The reˉ quirements on hardware for RSDOA matrix method is predigested consu medly only need one fiducially sensor array with arbitrary structure and a single scattered sensor cell, so it is more effective and practical than other existing similar algoˉ rithms.

与现有算法相比较，RSDOA方法对于系统的硬件需求大为下降，计算负担小；由于无阵列孔径损失问题且空时协方差矢量具有时域平滑效果，因此参数估计性能优越，具有广泛的适用性与实际的应用价值。

Data pre-processing technologies such as singular points elimination, registration and radius compensation are studied. Base on chord high difference algorithm, a new one called chord high difference-ratio algorithm is proposed to improve veracity and robusticity of singular points elimination. Then, a registration algorithm based on local surface reconstruction is proposed, which avoids infaust influence coming from single reference point error.

在弦高差法的基础上，提出了全新的弦高差—比法，提高了异常点剔除的准确性和柔韧性；提出了一种基于局部图形重构的重定位方法，该方法通过对特征球的最小二乘拟合，消除了单一参考点的精度对重定位的影响；在此基础上对重定位的误差进行了详细的分析，给出了精确的误差值，从数学的角度保证了重定位的精度；在三角网格法的基础上提出了基于Delaunay三角剖分的半径补偿新方法，有效改善了补偿矢量的计算效率和准确性。

According to the moving characteristics of tracklayer, when the vehicle is on ramp and the ground's vertical pressure is linear, the calculating formulas of relationship between the deviation of the instantaneous steering center, the position of vehicle's gravity, steering radius, moving velocity, moving acceleration, and vehicle's orientation, were obtained by the theory and method of vector analysis in mathematics and mechanics.

摘要根据履带式车辆的运动特点，运用数力学中矢量分析理论和方法，推导了接地比压为线性分布时履带式车辆在斜坡上转向时，瞬时转向中心偏移量与车辆重心位置、转向半径、行进速度、加速度、车辆方位相互关系的计算公式。

This chapter is separated into two parts. The first part introduces the encode and decode scheme which applies the TCQ in DCT field, then corresponding implement algorithm and its simulation are given. The latter part excludes the operation that quantizes only one pixel every time, and adopts the VQ method, then brings forward the TCVQ algorithm in DCT field. Finally corresponding implementation algorithms along with its simulation results are given.

本章分成两部分第一部分详细介绍了运用DCT域TCQ方法进行编码、解码的方案，并提出具体实现算法和进行了仿真计算；第二部分在DCT域TCQ基础上，摈弃在DCT域单个量化的做法，采用矢量量化的方法，提出了DCT域TCVQ的实现算法，同时也进行了仿真。

The problem is how to consider the relativistic corrections to this potential. Adopting the assummation that the quark interaction is the sum of the usual one-gluon direct exchange and the mixture of linear scalar and vector potentials, we structure the relativistic corrections of order v2/c2to the Cornell potential, including the annihilation potential for the quark and antiquark of the same favors which plays the same role with the one-gluon direct exchange at short distances.

采纳库仑势源于单胶子直接交换，而线性禁闭源于标量和矢量的混合，同时考虑在短程区域与单胶子直接交换起同样作用的同味正反夸克的湮灭，构造了静态夸克-反夸克势到v~2／c~2级次的完全相对论修正，并拟合计算了重介子偶素的能谱，讨论了相对论修正对重介子偶素能级分裂的作用。

We make a concise review of this method and use it to calculate the radiative decays of the vector mesons, the baryon magnetic moments, the isospin symmetry breakings in π,ρsystem and πNN coupling constants. All of our results agree well with data.

我们对这一方法作了扼要的评述，应用它计算和分析了矢量介子的辐射衰变宽度，重子磁矩，π和ρ体系的同位旋对称性破缺以及πNN 耦合常数的同位旋对称性破缺等，都得到了与实验符合得很好的结果。

The main purpose of this dissertation is to research the fast codewords search algorithms based on VQ, improve the existing fast algorithms and to reduce encoding time and calculating complexity. Thereby we can get better encoding performance.

本文的主要目的是通过对矢量量化快速码字搜索算法的研究，改进已有的快速算法，进一步降低编码时间和计算复杂度，以获得更好的编码性能。

The finite element method has been used to analyze and calculate the space magnetic fields of wafer magnets and square magnets as well as sphere magnets. Vector magnetic potential, magnetic induction, magnetic force lines and magnetic induction isolines are obtained which provide theory basis for the application of magnetic field.

采用有限元法对磁疗中常用的圆片磁源、方片磁源、球形磁源的空间磁场进行了分析和计算，得到了上述磁源空间磁场的矢量磁位、磁感强度、磁力线和磁感强度等值线等参数，为磁源的使用提供了理论依据。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。