Humanities and Arts

A new kind of camera, which allows you to take the photo now, and focus later at any point you like. There is demo in the web.

The principle is that, you record not the sum of all the light cones, but the individual light ray's vector direction. So that you can focus to any plane by ray tracing method.

昨天看了一套教人深思的電影 - 〈Three Idiots〉，故與大家分享一下。快樂、生活、學習，其實都可以是很簡單的。

http://www.tudou.com/programs/view/h5RvIAx0sTU/

This is what education truly mean, to have fun and excitement during the pursuit of excellence.

Unblock me is a puzzle game in iphone. It's originated from rush hour. I am interested in solving the board game using computer. I can enter the board configuration into the computer one by one, but I would like to do it automatically. With image processing capatibability in Mathematica, the process can be done rather easily by taking screenshot.

You may have heard a saying that any paper cannot be folded more than 7 times. This video shows that it is possible. In fact, you can fold 11 times! But the paper they are using is as large as a football field, while the original saying is that, you can't fold an A4 paper more than 7 times. It is still an interesting video to watch.

Folding a square sheet of paper into an arbitrary 3D shape is proved to be NP-hard problem. It is proved by transforming the problem into circle packing problem[1].

[1] arxiv.org/abs/1008.1224: Circle Packing for Origami Design Is Hard

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Why vertical-align:middle don't work for DIV? Any ideas?

I just want to align some text vertically middle. Any work around?

CSS is super easy to write.  But as my site becoming more complicated, the CSS seems becoming more complicated and unorganized.  Maintaining the CSS is becoming increasingly difficult.  As I often create a new CSS class as a solution to layout problems, so the CSS becoming also quite long. Even worse, as the HTML layout change, very often there's unused CSS style left in the CSS file.

I ...

I have already created image handling functions:
An upload reciever (filebrowserUploadUrl) and an image browser dialog (filebrowserBrowseUrl)
- Both work perfectly 

BUT of course my users want more... ...

A great presentation on how to build web applications that attract users and make them feel good.

I am using

to retrieve HTML pages. It require a standard "http://www.blahblahblah.com" syntax in order to work. However, sometimes the url input may be in the form of "www.blahblahblah.com" or "blahblahblah.com", which should be able to work in web browser but not urllib2.urlopen.  My question is: Are there a simple way to convert these non-standard URLs to the standard ones? Thanks. ...