European Journal of Scientific Research ISSN: 1450-216X / 1450-202X Volume 104 No 4 June, 2013 Editors-in-Chief Lillie Dewan, National Institute of Technology Co-Editors Chanduji Thakor, Gujarat Technological University Claudio Urrea Oñate, University of Santiago Editorial Board Maika Mitchell, Columbia University Medical Center Prabhat K. Mahanti, University of New Brunswick Parag Garhyan, Auburn University Morteza Shahbazi, Edinburgh University Jianfang Chai, University of Akron Sang-Eon Park, Inha University Said Elnashaie, Auburn University Subrata Chowdhury, University of Rhode Island Ghasem-Ali Omrani, Tehran University of Medical Sciences Ajay K. Ray, National University of Singapore Mutwakil Nafi, China University of Geosciences Felix Ayadi, Texas Southern University Bansi Sawhney, University of Baltimore David Wang, Hsuan Chuang University Cornelis A. Los, Kazakh-British Technical University Teresa Smith, University of South Carolina Ranjit Biswas, Philadelphia University Chiaku Chukwuogor-Ndu, Eastern Connecticut State University M. Femi Ayadi, University of Houston-Clear Lake Emmanuel Anoruo, Coppin State University H. Young Baek, Nova Southeastern University Dimitrios Mavridis, Technological Educational Institute of West Macedonia Jerry Kolo, Florida Atlantic University Mohamed Tariq Kahn, Cape Peninsula University of Technology Publication Ethics and Publication Malpractice Statement Duties of Editors Confidentiality— Editors of the journal must treat received manuscripts for review as confidential documents. Editors and any editorial staff must not disclose any information about submitted manuscripts to anyone other than the corresponding author, reviewers, other editorial advisers, and the publisher. Equal Treatment—Editors of the journal must evaluate manuscripts for their intellectual content and their contribution to specific disciplines, without regard to gender, race, sexual orientation, religious belief, ethnic origin, citizenship, or political philosophy of the authors.