http://www.braillewithoutborders.org - 藏语盲文
http://news2.sysu.edu.cn/theory01/124827.htm - 中山大学 盲人教授 广东省盲人协会主席(广东有75万盲人)
www.tingyouwang.com - 盲人游戏论坛
http://bbs.amhl.net/read-htm-tid-33477.html - 爱盲互联
http://www.lrde.epita.fr/~adl/autotools.html - good autotools tutorial
https://wiki.ubuntu.com/PackagingGuide - build deb
http://ubuntuforums.org/showthread.php?t=51003 - Howto make debian standard debs from scratch
https://fedoraproject.org/wiki/How_to_create_an_RPM_package - How to create an RPM package
http://www.comptechdoc.org/independent/web/cgi/javamanual/ - Javascript
http://javascript.crockford.com/ - the best Javascript reference
http://www.ecma-international.org/publications/files/ecma-st/ECMA-262.pdf - ECMA-262
http://www.zhiguoguo.com - 知果果,在线知识产权法律服务
oSoopat专利搜索引擎(中英文检索):http://www.soopat.com/
o谷歌通用检索(中英文检索):http://www.google.cn/
o我司专利申请库检索(专利工程师检索)
- Spectrum:频谱
- Pitch:音高
- Intensity:音强
- Formant:共振峰
- Pauses:脉冲
- Fundamental Frequency:基频(男:60-250Hz,女:75-450Hz)
- 宽带语图(元音、辅音):男(0-5000Hz),女(0-5500Hz)
- 窄带语图(声调、语调):男(0-1200Hz),女(0-2000Hz)
钢琴中央C为C4,标准音为A4频率为440Hz,G5频率为784Hz,A3=220Hz,A2=110Hz,A5=880Hz
参考:
FreeDict - free bilingual dictionaries (可惜没有中文)
Zhongwen Development Tool - helping to study Mandarin Chinese
中文自然语言处理开放平台 - 中科院计算所自然语言处理研究组(有词典和很多重要的资料)
The Linux kernel accepts boot time parameters as it starts to boot system. This is used to inform kernel about various hardware parameter. You need boot time parameters:
* Troubleshoot system
* Hardware parameters that the kernel would not able to determine on its own
* Force kernel to override the default hardware parameters in order to increase performance
* Password and other recovery operations
The kernel command line syntax
name=value1,value2,value3…
Where,
从理论上来说,内存的读写速度是硬盘的几十倍,性能应该会有所提升
在一些访问量比较高的系统上,通过把一些频繁访问的文件,比如session 放入内存中,能够减少很多的iowait,大大提高服务器的性能
代码:
none /tmp tmpfs defaults 0 0
重启后生效
或者在/etc/rc.local中加入
代码:
mount tmpfs /tmp -t tmpfs -o size=128m
其中size=128m 表示/tmp最大能用128m
或
色调、饱和度、亮度是色彩的三个基本描述元素。色调的值为0-239,饱和度的值为0-240。三元素与RGB系统有以下的关系:
1. 亮度是R、G、B成比例放大,但当某一基色达到最大值时则开始变色。
2. 饱和度越低,R:G:B越趋向于127:127:127
3. 色调渐变过程中RGB按以下规律变化:
a) R:255 G:0 B:0
b) R:255 G:255 B:0
c) R:0 G:255 B:0
d) R:0 G:255 B:255
e) R:0 G:0 B:255
亮度算法 value = 0.299 * red + 0.587 * green + 0.114 * blue
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