一篇讲解OFDM技术的PDF文档，里面详细讲解了OFDM原理，希望对初学者有帮助。...

thinkjava java基础学习书籍！-thinkjava java-based learning books!

vc6.0实现画线第三步（深入浅出mfc）

Visual C++实践与提高－－数据库开发与工程应用篇 随书代码 希望对用ADO开发的人会有所帮助 这是第10、11章的-Visual C Practice and improve-- database development and application articles with the hope that the code book to use ADO development will be helpful This is the first 10 and 11 of Chapter

jScript手册-JScript Manual

AD7671数据手册，并口双极性AD,采样频率350ksps。速度非常快，可以用在谐波分析中。-AD7671 data sheet, parallel bipolar AD, the sampling frequency 350ksps. Very fast, can be used in harmonic analysis.

《matlab编程百例》光盘代码26-30-"Matlab programming hundred cases" CD-ROM code 26-30

这个是我平常收集的一些东西 很使用 对于快速掌握dos命令很有帮助-this my usual collection of the things is the use of quick grasp dos orders helpful

rc 500 可以使用于RC500开发，验证OK-rc 500 RC500 can be used in the development, test OK

ArcGIS相关软件功能，开发介绍，使用手册-ArcGIS related software services, developing presentations, user manual

介绍基于内容图像识别的相关技术，他是检索技术的前沿，目前还处于初级阶段-We have witnessed great interest and a wealth of promise in content-based image retrieval as an emerging technology. While the last decade laid foundation to such promise, it also paved the way for a large number of new techniques and systems, got many new people involved, and triggered stronger association of weakly related fields. In this article, we survey almost 300 key theoretical and empirical contributions in the current decade related to image retrieval and automatic image annotation, and in the process discuss the spawning of related subfields.We also discuss significant challenges involved in the adaptation of existing image retrieval techniques to build systems that can be useful in the real world. In retrospect of what has been achieved so far, we also conjecture what the future may hold for image retrieval research.