This is Wenbin Yu from Utah State University, more details can be found from my website (www.mae.usu.edu/faculty/wenbin). I browsed through this site several times and felt like home here, particularly seeing so many of my friends and so many of my role-model mechanicians. I finally made the decision to register and became part of the iMechanicians family. Zhigang, thanks a lot for providing such a wonderful platform for mechanicians to network and exchange their ideas. This post may not belong to the research channel. I am just try to see whether I can post.