NumericalCaculation

matlab+dct+数字水印，这实在linux系统下运行的程序。(matlab+ dct+ digital watermarking, which is running under linux system procedures.)

本程序源码是为日本一家地震监测机构编写的，用来演示地震对不同楼层的作用效果。可以手动调整震动幅度的比例。(the program source code is one of Japan's earthquake monitoring bodies to prepare, used to demonstrate the different floors of the earthquake in effect. Vibration can be manually adjusted rate ratio.)

说明：   有一个长度为整数L(1<=L<=10000)的马路，可以想象成数轴上长度为L的一个线段，起点是坐标原点，在每个整数坐标点有一棵树，即在0,1,2，...，L共L+1个位置上有L+1棵树。 现在要移走一些树，移走的树的区间用一对数字表示，如 100 200表示移走从100到200之间（包括端点）所有的树。 可能有M(1<=M<=100)个区间，区间之间可能有重叠。现在要求移走所有区间的树之后剩下的树的个数。 输入： 两个整数L(1<=L<=10000)和M(1<=M<=100)。 接下来有M组整数，每组有一对数字。 输出： 可能有多组输入数据，对于每组输入数据，输出一个数，表示移走所有区间的树之后剩下的树的个数。(Has a length of integer L (1 &lt = L &lt = 10000) of the road, one can imagine a number line segment of length L, the starting point is the coordinate origin, each integer coordinate points in a tree, i.e. 0,1 , 2, ..., L total has L+1 L+1 positions on the tree. Now to remove some trees, tree removed by a range of digitally represented, such as 100 200 represents removed (inclusive) between 100 and 200 all the trees. There may be M (1 &lt = M &lt = 100) intervals, there may be overlap between the intervals. Now, after the number of trees require the removal of all remaining sections of the tree. Input: two integer L (1 &lt = L &lt = 10000) and M (1 &lt = M &lt = 100). Then there is an integer M groups, each with a pair of numbers. Output: there may be multiple sets of input data, for each set of input data, the output of a number indicating the number of the removal of all remaining sections of the tree after tree.)

低通巴特沃斯滤波器设计求阶数，适合广大学生们参考，(Low-pass Butterworth filter design requirements order, for the majority of students reference)

实现FlightGear与外部通信，获得仿真的飞行参数及配置FlightGear。便于基于FlightGear的地面站设计(communication with FlightGear based on UDP in C++)

导入RENIX文件，通过卫星导航电文计算卫星的位置，并与精密星历做对比。(RENIX import files via satellite navigation data to calculate the position of the satellite, and with precise ephemeris do comparison.)

运用MATlab软件，通过散斑相关法计算材料在力的作用下的变形和应变(The use of MATlab software, the speckle correlation method to calculate the deformation and strain effect of material in force under the)

普林斯顿开发的快速球面调和变换算法，我把它移植到windows下，并做成链接库，可以直接调用(Princeton rapid development of the spherical harmonic transform algorithm, I transpose it to the windows, and causing link library, and can directly call)

Stop function Unpacked in UPX The program will not be able to decompress. After using this program

Threshold Adaptive Threshold