2012 Spring World Congress on Engineering and Technology (SCET2012) is composed of several conferences on the frontier topics in the engineering and technological subjects. SCET 2012 serves as good platforms for people working in academia or industry to exchange the most updated information and achievements in these fast-developing and exciting research areas. The SCET2012 conference proceedings will be published by IEEE, and the accepted papers will be indexed by Ei Compendex .