hanshu-4-1

基于小波变换的数字水印技术用于matlab实行(Based on Wavelet Transform Digital Watermarking Technology for matlab implementation)

mathematica5简明教程 关于mathematica的教程，值得看一看咯！！！(mathematica5 concise tutorial mathematica about the tutorial, it is worth a look pyronaridine! ! !)

Communition MATLAB (Proakis)中的源程序，很不错(Communition MATLAB (Proakis) of the source, it is good)

Elementary Linear Algebra

slam进阶学习，老外做的，很完善的东西，对于同时定位与地图创建的friend有很大的帮助(slam Advanced study, foreigners do things very well, for localization and mapping at the same time created a great friend to help)

正交频分复用(Orthogonal Frequency Division Multiplexing，OFDM)技术以其频谱利用率高和抗频率选择性衰落强等优点，成为下一代移动通信中最具竞争力的关键技术之一(OFDM (Orthogonal Frequency Division Multiplexing, OFDM) technology for its high spectrum efficiency and strong anti-frequency selective fading, etc., to become the next generation of mobile communications in the most competitive one of the key technologies)

说明：  本程序实现了通信原理中的平顶抽样与恢复，有代码与结果(This procedure implements the communication theory in the flat sample and recovery, with code and results)

Joannopoulos "Photonic crystals. Molding the flow of light" - one of the best books on photonic crystals(Joannopoulos "Photonic crystals. Molding the flow of light"- one of the best books on photonic crystals)

说明：  颜色阈值分割，可以很好的分割图像。希望对大家有用(Color segmentation, image segmentation can be very good. Hope to useful)

我们的目的是将一个分数拆分成若干个分子是1分母是正整数的分数之和的形式。例如2/3可以拆分成1/2+1/6的形式。这里不考虑顺序，比如1/6+1/2和1/2+1/6相同。 输入p, q, a, n, 其中p/q为分数，对这个分数进行拆分，要求拆分的分数个数不能多于n个，所有分母的乘积不能大于a。求有多少种拆分方法? 输入：最多200组数据。在每行中都有四个数分别表示p, q, a, n，之间以空格隔开，并且满足p,q<=800，a<=12000，n<=7，最后以四个0做为输入的结束。 输入示例: 2 3 120 3 2 3 300 3 0 0 0 0 输出示例: 4 7 (Our aim is to split a fraction into a number of elements is a denominator is a positive integer fraction of the sum of form. For example, 2/3 can be split into 1/2+1/6 form. Not considered here, the order, such as 1/6+1/2 and 1/2+1/6 of the same. Input p, q, a, n, where p/q as a fraction of this split scores require no more than the number of split points n-all the product of the denominator can not be larger than a. How many kinds of demand split method? Input: Up to 200 sets of data. In each line has four numbers indicate the p, q, a, n, separated by a space between, and meet the p, q < = 800, a < = 12000, n < = 7, the end, four 0 as the input end. Input Example: 2,312,032,330,030,000 sample output: 47)