1. School of Civil Engineering, Shandong Jianzhu University, Jinan, China
2. School of Civil Engineering, Qingdao University of Technology, Qingdao, China
3. Department of Math and Computer Science, Brandon University, Brandon, MB, Canada
4. Department of Information and Finance Management, National Taipei University of Technology, Taipei, Taiwan
5. School of Information and Control Engineering, Qingdao University of Technology, Qingdao, China