SWSAD stand for Software System Analysis and Design
The reason why there is such a page is that I don’t like to establish all of my homework or assignments as part of my blog content since they are not good tutorials or QA things … which means not so helpful for most of readers (of course, except the other students of the course). So a single page is used here as a special homework one … But if there is any very useful text, I will think about put it in the home page !