Chief Editor Prof. (em.) Dr.-Ing. Ir. Darwin Sebayang Associate Editor Dr. Sagir Alva Editorial Board Prof. Ir. Dana Santoso, M.Eng.Sc., Ph.D. Prof. Dr. Ir. Chandrasa Soekardi Dr. Kontan Tarigan Assoc. Prof. Soorathep Kheawhom, Ph.D. Ith Vuty, M.Sc., M.A. Prof. Dato' Dr. Ahmad Mujahid Ahmad Zaidi Assoc. Prof. Dr.-Ing Yupiter HP Manurung Assoc. Prof. Dr. Edy Herianto Majlan Prof. Dr. Sulaiman Hasan Assoc. Prof. Dr. Abdul Mutalib bin Leman Dr. Azian Hariri Dr. Mohd Fahrul Hassan Dr. Hendri Nasution Prof. Dr. Erry Yulian Triblas Adesta Assoc. Prof. Dr. Muhaimin Ismoen Dr. Nasrudin Prof. Dr. Bambang Suharno Dr. Arbi Dimyati Dr.-Ing Pudji Untoro Dr. Sulistyo