I am 38-year old now.

It has been awhile for me to come back to this blog after three years. A lot of things happened in the past three years. I started my first job as an assistant professor at computer science and computer engineering department at University of Arkansas in January 2010. I bought a house at the end of 2010. When we came to Fayetteville, I had a daughter and a son. Each bedroom in the house was occupied. Now three rooms are empty......