id car in China ,so you can be familiar with the car where it comes from

操作系统――页面置换算法-operating system-- pages replacement algorithm

实例4学院信息管理系统 - RAR 档案文件-College Information Management System-RAR files

资源描述提供的CSingleInstance类允许你的程序只有一个实例，如何检测一个程序的拷贝正在运行是一个古老的问题，这个例子利用MMF(内存映像文件)检测确实值得推荐

这是一个程序设计方法学的实验报告，内容丰富，欢迎下载-This a process design methodology of the report, rich in content, welcome to download! !

用C、C++写的学生学藉管理系统，自己写的有课程设计！-With C, C++ written by students to learn management systems, have written their own curriculum design!

小波函数，帮助处理含有噪声的信号，便于解决信号分析的不准确性 -Wavelet function, to help deal with noisy signals, to facilitate the solution not the accuracy of signal analysis

93-96usaco的试题与解答，对参加io和acm的同学非常有帮助。-93-96usaco the questions and answers for students to participate in io and acm very helpful.

本文首先概述了OFDM 的原理、特征和关键技术，介绍了系统需要的几种同步。然后就同步误差对系统性能的影响进行了简单的分析，表明定时偏差和采样频率偏差将会引入码间干扰，载波频率偏差导致载波间干扰的发生。因此，在OFDM系统接收机中定时的确定、载波频率偏差和采样频率偏差的纠正是信号恢复的关键。之后对OFDM系统同步的几种实现方法进行了介绍，分析了各同步方法的性能。-The paper first outlines the principles of OFDM, features and key technologies, the system needs to introduce several synchronization. Synchronization error and then the impact on system performance for a simple analysis, show that the timing deviation and the sampling frequency deviation will introduce inter-symbol interference, the carrier frequency deviation led to the occurrence of ICI. Therefore, in OFDM system receiver to determine the timing, carrier frequency offset and sampling frequency offset correction signal to restore the key. After the OFDM system to achieve synchronization of several methods of introduction, an analysis of the performance of the synchronization method.

生成一个高斯水印后，对待嵌入水印的载体图像进行二维的DCT变换，然后嵌入水印-Generates a Gaussian watermark, the watermark embedded in the carrier to treat two-dimensional image of the DCT transform, and then embedding the watermark

This a pthread program code which is compiled under the linux. Someone who want to test the pthread s program can download this code.