1. Department of Civil Engineering, National Chi Nan University, No. 1 University Rd., Puli 54561, Taiwan, https://orcid.org/0000-0001-8413-5217
2. Department of Civil Engineering, National University of Kaohsiung, No. 700, Kaohsiung University Rd., Nanzih District, Kaohsiung 81148, Taiwan
3. Department of Landscape Architecture, National Chin-Yi University of Technology, No. 57, Sec. 2, Chung Shan Rd., Taiping, Taichung 41170, Taiwan (Corresponding author), e-mail: drwpsung@gmail.com, https://orcid.org/0000-0002-2113-6973