High Scalability Blog

The High Scalability blog is on large data web applications. A very good site!

Astronomy surveys

SKA
LSST
Pan-STARRS
Sloan
2MASS: Wiki: 2MASS, The Two Micron All Sky Survey at IPAC
Wise: wise

ios project example

ios小项目——新浪微博客户端总结

Use TOP and DISTINCT together in t-sql

Surprisingly it is difficult to use TOP and DISTINCT together in SQL. This will not work: select top 2 distinct t.ID as tID, t.Name as tName from Table1 order by tID It can be replaced by something like this to work: select top 2 * from (select distinct t.ID as tID, t.Name as tName from Table1 t) y order by tID Also see some other web links, such as Here

HTML5 new features

用HTML5实现人脸识别 (Translated from: Face detection with getUserMedia)
用HTML5实现手机摇一摇的功能

ACM classic - Reflections on Trusting Trust

Reflections on Trusting Trust, by Ken Thompson.

See how Ken Thompson implanted a back door into unix by hacking the compiler.

DjVu to PDF converter

DjVu to PDF converter
Free & Online. BETA version. Searchable PDFs!

http://www.djvu-pdf.com/