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R数据可视化手册
说明： 本书提供了快速绘制高质量图形的150多种技巧，每个技巧用来解决一个特定的绘图需求。读者可以通过目录快速定位到自己遇到的问题，查询相应的解决方案。(This book provides more than 150 techniques for quickly drawing high quality graphics, each of which addresses a specific drawing requirement. Readers can quickly locate their own problems through the directory, query the corresponding solution.)
- 2020-06-25 16:00:02下载
- 积分：1
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Wavelets For Kids A
说明： 小波分解的入门级教材，内容不多，但讲解平实，简单易懂，可以作为刚开始学习小波的同学的阅读材料(wavelet decomposition of the entry-level teaching materials, as small, but on the down-to-earth, simple, as it has just begun to study wavelet students reading material)
- 2005-09-22 19:54:13下载
- 积分：1
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Sharepoint2013列表视图和字段权限扩展插件
SharePoint列表相关内容，扩展插件等。(SharePoint list related content, extension plug-ins, etc.)
- 2017-12-06 18:03:19下载
- 积分：1
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FastBEM
关于最新的边界元快速算法的专著，提出了一种代数方法来加快边界元方程组的求解。值得一看。(Boundary Element Methods (BEM) play an important role in modern numer-
ical computations in the applied and engineering sciences. Such algorithms are
often more convenient than the traditional Finite Element Method (FEM),
since the corresponding equations are formulated on the boundary, and, there-
fore, a signifi cant reduction of dimensionality takes place. Especially when the
physical description of the problem leads to an unbounded domain, traditional
methods like FEM become unalluring)
- 2009-12-03 18:21:48下载
- 积分：1
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OV7670DATASHEET
OV7670数据手册OV7670数据手册OV7670数据手册(OV7670 datasheet OV7670 datasheet OV7670 Data Sheet)
- 2021-03-04 16:59:32下载
- 积分：1
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2014_car_hackers_handbook_compressed.pdf
说明： Car Hacker's Handbook
- 2017-12-05 08:14:49下载
- 积分：1
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《Python Cookbook》第三版中文v1.0.2
说明： 书名：《PythonCookbook》 3rd Edition
作者：David Beazley, Brian K. Jones
译者：熊能(PythonCookbook, 3rd Edition)
- 2020-07-05 14:27:28下载
- 积分：1
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弹道学ppt trajectory description
北航弹道学ppt，其中包含几种典型弹道说明，典型防空阵地布置和放空区介绍，可用于仿真(Northern ballistics ppt, several typical trajectory shows typical anti-aircraft positions and vent area, it is used to simulate)
- 2016-07-21 11:52:38下载
- 积分：1
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nannvshengshibie
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.)
- 2009-04-12 16:23:04下载
- 积分：1
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GSM
gsm原理 (gsm原理 )
- 2010-03-02 12:44:44下载
- 积分：1
