Affiliation: | 1. Mathematical Department, Zhejiang Normal University, Zhejiang 321004, PR China;2. School of Mathematical Science, Peking University, Beijing 100871, PR China;1. Universiti Tenaga, Mechanical Engineering Dept., Selangor, Malaysia;2. Energy, Vibration and Sound Research Group (e-VIBS), Faculty of Science and Natural Resources, Universiti Malaysia Sabah, Jalan UMS, 88400 Kota Kinabalu, Sabah, Malaysia;3. Mechanical Engineering, College of Applied Sciences, Ministry of Higher Education, Oman;4. Ministry of Science and Technology, Baghdad, Iraq;1. Department of Applied Mathematics and Theorical Physics, University of Cambridge, Cambridge CB3 0WA, UK;2. Applied Mathematics & Computers Lab, Department of Sciences, Technical University of Crete, Chania 73100, Greece |