Dagon University Research Journal, Vol. 3, 2011 Editorial Board Executive Editor Prof. Dr. Hla Htay, Rector-in-Charge, Dagon University Editor in Chief Prof. Dr. Aye Aye Tun, Pro-Rector, Dagon University Editors (Science, Earth Science and Life Science) Prof. Dr. Yin Shwe, Head of Department of Industrial Chemistry, Dagon University Prof. Dr. Than Than Htay, Head of Department of Botany, Dagon University Prof. Daw Phyu Phyu Lwin, Head of Department of Geology, Dagon University Prof. Dr. Khin Mar Kyu, Head of Department of Physics, Dagon University Prof. U Toe Aung, Head of Department of Mathematics, Dagon University Prof. Dr. Khin Maung Swe, Head of Department of Zoology, Dagon University Prof. Dr. Cho Cho Win, Head of Department of Chemistry, Dagon University Daw Myint Myint Thein, Lecturer, Head of Department of Computer Science, Dagon University Editors (Humanity, Social Science and Environmental Science) Prof. Daw Palei, Head of Department of Geography, Dagon University Prof. Dr. Kyawt Hmu Aung, Head of Department of Archaeology, Dagon University Prof. Daw Swe Swe Pwint, Head of Department of English, Dagon University Prof. Dr. Mon Mon Tar, Head of Department of Law, Dagon University Prof. U Aye Kyaw, Head of Department of Psychology, Dagon University Prof. Daw Kyi Kyi Oo, Head of Department of Myanmar, Dagon University Prof. Dr. Mi Mi Aung, Head of Department of Oriental Studies, Dagon University Prof. Dr. Nyunt Nyunt Shwe, Head of Department of History, Dagon University Prof. Dr. Sun Tun, Head of Department of Philosophy, Dagon University Prof. Dr. Min Thaung, Head of Department of International Relations, Dagon University Daw Myint Myint Aye, Lecturer, Head of Department of Anthropology, Dagon University .