American Journal of Scientific Research ISSN: 1450-223X Issue 59 April, 2012 Editorial Advisory 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 Raj Rajagopalan, National University of Singapore 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 Jatin Pancholi, Middlesex 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 Mohand-Said Oukil, King Fahd University of Petroleum & Minerals David Wang, Chung Yuan Christian University Cornelis A. Los, Kazakh-British Technical University Abdul Jalil, Wuhan University Wen-jen Hsieh, National Cheng Kung University M. Carmen Guisan, University of Santiago de Compostela H. Young Baek, Nova Southeastern University Ebere Oriaku, Elizabeth City State University Neven Borak, Securities Market Agency Maria Elena Garcia-Ruiz, University of Cantabria Ghadir Mahdavi, Kyoto University Emanuele Bajo, University of Bologna Wassim Shahin, Lebanese American University Neil Reid, University of Toledo Christopher Balding, University of California, Irvine Jean-Luc Grosso, University of South Carolina Richard Omotoye, Virginia State University Eskandan A. Tooma, the American University in Cairo Rafa E. Al Qutaish, Al-Ain University of Science and Technology, UAE Leo V. Ryan, DePaul University Elmer-Rico E. Mojica, State University of New York at Buffalo Syrous Kooros, Nicholls State University G. M. Nasira, Sasurie College of Engineering