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Teradat语言扩展了标准数据库语言，使用起来更加灵活，开发效率更高(Teradat language extends the standard database language, to use more flexible, more efficient development of)

ubuntu系统性能优化简单教程 关闭最小化动画 长期使用 Ubuntu 后有一种感觉，那就是在 GNOME 中启动应用程序时，速度越来越慢。在 Ubuntu 英文论坛那边看到一个技巧，可以对这个问题起到改善作用。打开 /etc/hosts 文件，可以看到类似下面的内容： 。。。。。。。。。。。。(Ubuntu system performance optimization simple tutorial Close minimize animation After long-term use of Ubuntu, it is a kind of feeling in the GNOME started in the application, the more and more slow. In English BBS there see a Ubuntu on this problem technique that can play improved. Open/etc/hosts file, can see similar the following content: )

机器人标定,基于POE公式的机器人几何参数标定(Robot calibration, calibration of robot geometric parameters based on POE formula)

Lua 程序设计经典入门书籍 带书签,还可以 看看吧(Lua programming classic introductory books)

Linux.Kernel.3rd.Edition 欢迎大家踊跃下载 祝福大家(Linux.Kernel.3rd.Edition enthusiastically welcomed everyone to download bless everyone)

本文通过对男性和女性声音的语音特征的研究，发现男女声的基音频率存在较大的差异，并设计了基于基音频率分析的男女声识别系统。男女声识别系统由以下三个模块电路构成：话筒放大器，低通滤波器，半波整流电路，单片机测量控制模块。话筒放大器采用NE5532P音前置芯片，对语音信号进行放大；八阶低通滤波器MAX293完成基音信号的提取；单片机STC12C5410AD实现频率测量和控制输出功能。经仿真与电路实测，男女声的识别效果良好。(In this paper, the voices of male and female voice characteristics of the findings of a study of the fundamental frequency of the sound of men and women there is a big difference, and the design of frequency analysis based on the pitch of the voice recognition system for men and women. Voice Recognition System for men and women from the circuit the following three modules: the microphone amplifier, low-pass filter, half-wave rectifier circuit, single-chip measurement control module. NE5532P sound using the microphone pre-amplifier chip amplification of voice signals eight MAX293-order low-pass filter to complete the extraction of pitch signal STC12C5410AD single-chip realization of the frequency of measurement and control output. By circuit simulation and measurement, the identification of male and female voices well.)

单载波频域均衡论文，理论基础，新手入门学习必备。(Single carrier frequency domain equalization paper, learning essential.)

介绍了MathType的一些使用技巧，包括公式输入，公式排版等，给出了详细的图文教程(MathType introduced some tips, including formulas enter the formula typesetting, gives a detailed graphic tutorials)

NS2入門指導 有助于初学者了解NS2，真的对新手有所帮助(Getting Started guide will help beginners understand the NS2, really help the novice)

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