1.Besides this paper talks about the storage methods:Coordinate Storage(COO),Compressed Sparse Row(CSR),Compressed Sparse Column(CSC),Block Sparse Row,and the shortest path algorithm:Dijkstra algorithm and Bellman-ford algorithm,then we give the steps of dijkstra algorithm and its latest speed-up algorithm.
同时本文详细介绍了公路网络中信息的存储方法:Coordinate Storage(COO),Compressed Sparse Row(CSR),Compressed SparseColumn(CSC),Block Sparse Row,以及最短路径的搜索算法:Dijkstra算法和Bellman-ford算法,同时给出了Dijkstra算法步骤和它的最新改进算法.
2.An Operator Splitting Method with FDM and FEM for the Convection- Diffusion Equation Using Boundary-fitted Coordinate System
An Operator Spliting Method with FDM and FEM for the Convection－Difusion Equation Using Boundary－fited Coordinate System
3.Based on look-up table and CORDIC (Coordinate Rotation Digital Computer) algorithm, a method for implementing a numerically controlled oscillator (NCO) is described in the paper. In contrast with the NCO based only on look-up table, its advantages are high precision, simple structure and much less resource consumption.
研究了一种基于查找表和CORDIC(Coordinate Rotation Digital Computer)算法相结合的数控振荡器(NCO)的实现方法,与仅基于查找表的方法相比,该方法结构简单、精度高、耗费资源少。
4.Coordinate Measuring Machine isa kind of precise measuring instrument, which is characterized as largemeasuring space, high precision, better generality, higher flexibility andautomated measurement. CMM is the main measuring instrument used inmanufacturing industry, especially in aircraft and automobile manufacturing, tocollect quality data and aid in quality control.
三坐标测量机（CMM，Coordinate Measuring Machine）具有测量空间大、精度高、通用性强、柔性程度高、能自动测量等特点，是制造业尤其是航空、汽车制造业中收集质量数据，实现质量控制的主要检测设备。
5.Coordinate Rotation Digital Computer(CORDIC) algorithm is suitable for realization of DDS. The normal algorithm of CORDIC and the basic construction of DDS are introduced. We put forward a pipelining style CORDIC approach,which is used in the design of Field Programmable Gate Array(FPGA).
为了实现CORDIC(Coordinate Rotation Digital Computer)算法在DDS(Direct Digital Fre-quency Synthesis)中的应用,文章介绍了CORDIC算法的一般法则和DDS的基本结构,提出了一种流水线型的CORDIC算法,并应用于FPGA(Field Programmable Gate Array)设计中,最后给出了基于ModelSim的仿真结果。
6.In this paper, a pipelined CORDIC based coordinate transform circuit is described. First, CORDIC algorithm is presented and its theory is analyzed, then the procedure of using FPGA for implementation is described in detail, and some simulational results are listed in the end.
本文在介绍了 CORDIC(Coordinate rotation digital computer)算法的基础上 ,提出了一种基于 CORDIC算法的流水线型的坐标变换电路 ,随后给出了该变换电路用 FPGA实现的过程和硬件仿真结果。
7.The characteristic of all of world coordinate system is, coordinate of every time fixed position and locate coordinate does not have a relation last time, the coordinate location system that touching screen is an independence on physics, the data that feels every time passes the coordinate that calibration turns to go up for screen, such, no matter be below what circumstance,with respect to requirement feeling screen this covers coordinate, bit samer output data is stable, if be not stabilized, so this feeling screen locates with respect to unwarrantable absolutely coordinate.
绝对坐标系统的特点是，每一次定位坐标与上一次定位坐标没有关系，触摸屏在物理上是一套独立的坐标定位系统，每次触摸的数据通过校准转为屏幕上的坐标，这样，就要求触摸屏这套坐标不管在什么情况下，同一点的输出数据是稳定的，假如不稳定，那么这触摸屏就不能保证绝对坐标定位。
8.In Vaidya spacetime, the quantum nonthermal radiation of black hole was studied through studying HamiltonJacobi equation by using Lagging Eddington coordinate and tortoise coordinate transformation, which shows the study of the Lagging Eddington coordinate and that of the leading Eddington coordinate have the same result.
在Vaidya时空中,用滞后爱丁顿坐标形式,采用乌龟坐标变换,通过讨论哈密顿—亚可比方程,研究此黑洞非热辐射特征. 结果表明,用滞后的爱丁顿坐标研究Vaidya黑洞的非热辐射与用超前爱丁顿坐标研究Vaidya黑洞的非热辐射得出的结论完全一致.
9.When the kinetic energy matrix have been diagonalzed, under the condition A=aE or A≠aE,the common method of finding normal coordinate is given. Besides,other two methods of finding normal coordinate are given,one method is by changing the coordinate scales and diagonaling the new kinetic energy matrix, the other method is by changing the coordinate scales and using arbitrary row of adjoint matrix of the frequency eigen matrix.
给出了动能矩阵为对角矩阵,在A=aE和A≠aE(E为单位矩阵)两种情况下同时对角化势能矩阵求简正坐标的一般方法,并提出了先改变坐标标度,后对角化新势能矩阵或用频率特征矩阵的伴随矩阵的任一列求简正坐标的另两种方法.
10.Traditional coordinate measuring machines (CMMs) with Cartesian coordinate system, columniation coordinate system and other coordinate systems are widely used.
传统的坐标测量机大都基于一种几何坐标系,如笛卡儿坐标系,柱坐标系等。
