Science

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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.

A package is released as open source project in GoogleCode/MathOO-packages. The aim of the project is to provide basic utilities and basic classes using MathOO, so that you can use it in an object oriented way. In the initial release, 1.0b, a dictionary class (associated array) is provided.

This document is a documentation of the dict class in MathOO-packages. Basically it behaviors very similarly to Python dict.

Code is provided to benchmark the performance of MathOO.

Mathematica is a very useful software in many science fields. It supports procedural programming and functional programming. However, it does not support the modern object oriented programming. If you would like to add that, there is a package called Objectica, and it will cost you quite a fortune ($1000 on 3/11/2010).

Here I have developed a Mathematica ...

上期我跟大家談過「拉腰」治坐骨神經痛這個話題，後來有人問我物理治療中是否有一項叫「拉頸」的方法，用作治療頸椎神經線受壓呢？不錯，其實頸椎神經跟坐骨神經一樣，都會因受壓而出現肢體感覺上的錯亂，而他所說的「拉頸」，便是其中一種頗為常用的治療方式。

This is a short how to about how to sum sin(n q) and cos(n q).

近日有讀者來信，說她患了腰痛多年，近日痛楚更延至右腿外側，有時甚至擴散至小腿部分，間中還會出現麻痺感。

醫生建議她接受物理治療的「拉腰」療法。到底，「拉腰」是怎樣的治療方式呢？

「嬰兒斜頸」所謂何事：頸脖老是向一方歪斜，這是由於頸部一側的肌肉出現了腫塊。