geom2d

the code for compute Implied volatility

ofdm中的编码降低par方法程序，采用bcm码(ofdm of coding methods and procedures to reduce par, using code bcm)

采用数字图像主分量分析（PCA）算法实现人脸识别（身份认证或分类）(Principal components using digital image analysis (PCA) algorithm for face recognition (identity or category))

netfilter module to enforce network quotas.

说明：  这是一篇有关无线连接OFDM信道模型的文章，里面有仿真程序，我调过了，很好用！(This is one of the wireless connectivity OFDM channel model articles, there are simulation program, I emphasized that good use!)

matlab 2012b 完美破解的方法，77个工具箱都可以用(matlab 2012b crack perfect way 77 toolbox can be used)

基于Matlab平台开发的用于特征选择的算法，后向选择算法，主要用于提取心电生理信号的表示特定情感的特征用于降低特征维度。(Backward selection algorithm for feature selection algorithm based on Matlab platform development, mainly for extraction of ECG physiological signal represents a specific emotional characteristics used to reduce the feature dimension.)

本程序主要介绍了基于OFDM的认知无线电系统中最优功率分配的算法，从而确定CU的最大发射功率。(This procedure introduces a OFDM based cognitive radio system with optimal power allocation algorithm, so as to determine the CU maximum transmission power. )

新三步搜索算法对三步算法进行了适当的改进，在一定程度上弥补了TSS算法在估计细小运动时的不足，并加入了半途中止的策略，进一步提高了搜索精度 (The new three-step search algorithm for three-step algorithm to improve the appropriate, to a certain extent make up for the TSS algorithm in estimating the inadequacy of a small movement, and joined the mid-suspension strategy to further improve the search accuracy)

行商问题是一个经典的NP完全问题,多人旅行商问题的求解则更具挑战性。以往对求解多人旅行商问题的研究局限于以所有成员路径总和最小为优化标准(Salesmen problem is a classical NP complete problem, many people are solving the traveling salesman problem more challenging. Solving the traveling salesman problem of many previous studies limited to minimize the sum of all the members of the paths to optimize the standard)