My Hackintosh crashed a few days before. What’s worse, I couldn’t install OS X 10.9 Maverick any more because some wired stuff! :-( So in case I want to do something relative with *nix, I wanna install a desktop Linux now. And for safe, I am installing it in a virtual machine firstly.
At last, I installed Mac OS X Mountain Lion 10.8.3 in my Thinkpad T410, though I thought never using hackintosh before. I am getting used to OS X and considering transferring all my working flow into OS X now.
These days, I wanna have a look at the hot and smart technology: Node.js. So I’d like to make some notes and share some useful resources.
R is an useful software for statistical computing. And it has a package system, which enables users to install many interesting and useful packages. Here I note and recommend some.
It’s quite important to acquire, deal with and import data for statisticso work. Here is some notes about acquiring and importing data in R. This post may be updated frequently.
在低速运动力学下，两已知质量与初速度的质点完全弹性碰撞后的动能，动量情况已经被完整的研究并且得到解释解。但是，三个已知质量与初速度的质点同时碰撞后的动能动量情况依然没被研究清楚。本论文提出一种解决思路并且给出一组简单情况下的特解。