Po-Hung Liu, National Chin-Yi University of Technology; Ching Ching Lin, National Taipei University of Technology; Tung-Shyan Chen, National Chin-Yi University of Technology, Fundamental General Education Center; Chiu-Hsiung Liao, National Chin-Yi University of Technology, Fundamental General Education Center; Yen Tung Chung, National Chin-Yi University of Technology, Fundamental General Education Center; C. Lin, National Chin-Yi University of Technology, Taiwan R.O.C.; Ruey-Maw Chen, National Chin-Yi University of Technology