numerical analysis

一个能自我删除的程序，没有令起其他线程来删除，非常值得研究。-a self-delete procedure is not one to play the other threads to delete, very worthy of consideration.

说明：  将解压后文件夹中的jetbrains-agent.jar文件放到你所安装的pycharm目录下的lib文件夹中，然后打开pycharm，在License Activation激活界面，选择Active，选择Activation code，粘贴文件夹中所提供的激活码，点击ok，激活成功！解压后有Word教程(Put the jetbrains-agent.jar file in the unzipped folder into the Lib folder under the pycharm directory you installed, then open pycharm, in the license activation activation interface, select active, select activation code, paste the activation code provided in the folder, and click OK to activate successfully!Word tutorial after decompression)

Js全屏相册代码，带有图片幻灯特效，基于jQuery的相册特效，动画效果类似FLASH，利用JS分别控制多个图层滚动，形成逼真的Flash特效，编辑注：缺失的图片请自己补全吧，图片地址可能不对了。

说明：  期望最大化算法。假设数据服从高斯分布时，用于寻找全局最优解。(Expectation-Maximization algorithm)

渐变背景,在窗体中从上至下依次绘制多个矩形，使它们的填充色从蓝变化到黑，就能很好地模拟出渐变效果-graded background, in which top-down windows were drawing more than rectangular, filling their color changes from blue to black. it will be able to simulate effects of graded

可以进行谐波计算，等复杂的电力系统分析潮流计算，该算法具有计算速度快等优点(It can be used for harmonic calculation.)

说明：  旅行商问题(TravelingSalesmanProblem，TSP)是一个经典的组合优化问题。经典的TSP可以描述为：一个商品推销员要去若干个城市推销商品，该推销员从一个城市出发，需要经过所有城市后，回到出发地。应如何选择行进路线，以使总的行程最短。从图论的角度来看，该问题实质是在一个带权完全无向图中，找一个权值最小的Hamilton回路。由于该问题的可行解是所有顶点的全排列，随着顶点数的增加，会产生组合爆炸，它是一个NP完全问题。(Traveling Salesman Problem (TSP) is a classic combinatorial optimization problem. The classic TSP can be described as: a merchandiser sells goods to several cities. The salesman starts from a city and needs to go through all the cities and return to the starting point. How to choose the route of travel so that the total journey is the shortest. From the point of view of graph theory, the essence of the problem is to find a Hamilton loop with the smallest weight in a completely undirected graph with weights. Since the feasible solution to this problem is the full permutation of all vertices, as the number of vertices increases, a combinatorial explosion occurs, which is an NP-complete problem.)

基于matlab的反演程序,用于地球物理勘探中射线追踪及偏移成像程序.(the inversion procedure for geophysical exploration ray tracing and migration procedures.)

说明：  实现线性的电力系统潮流计算，分别为首端电压末端功率和末端电压末端功率，可实现一定精度的迭代计算(Power flow calculation in power system)

本文针对并行干扰抵消检测器的不足之处，提出了改进的并行干扰抵消检测算法——基于多项式展开的并行干扰抵消多用户检测算法。该算法将多项式展开检测器作为并行干扰抵消检测器第一级的数据估计值，以提高检测可靠性。通过仿真实验，首先验证了多项式展开检测器的性能。然后比较改进算法与传统检测器的性能，验证改进算法的系统性能得到明显改善；并与并行干扰抵消检测器、解相关检测器和MMSE检测器相比较，验 证得到该改进算法的性能也有不同程度的改善。 (this paper discusses the principle and performance of the conventional detector and the parallel interference cancellation(PIC)detector separately.Since the conventional detector take MAI only as the background noise without considering the existence of the other users,the existence of MAI has a significant impact on the performance of CDMA systems.Each stage of PIC detector utilizes the data estimates of the initial or previous stage,produces a new set of MAI estimates,and then subtracts out all of the MAI for each user in parallel.Through Monte Carlo simulation in different scenarios,the results illustrate the influence of MAI in conventional CDMA ystems.Theexperimental results show PIC detector can effectively eliminate MAI andimprove the system BER. )