Affiliation: | 1. Business School, Hohai University, Nanjing, 210098, Jiangsu, People’s Republic of China 2. Liaocheng Branch of Shandong Unicom, Liaocheng, 252000, Shandong, People’s Republic of China 3. School of Mechanical Engineering, Shandong Jiaotong Universiy, Jinan, 250023, Shandong, People’s Republic of China 4. College of Physics and Electronics, Shandong Normal University, Jinan, 250014, People’s Republic of China
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