About the Authors
- Pengjun Zhang
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Roles Investigation, Methodology, Writing – original draft
Affiliation School of Architectural Engineering, Hebei Vocational University of Industry and Technology, Shijiazhuang, China
- Jie Mi
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Roles Methodology, Software, Writing – original draft
* E-mail: mijie2011@163.com
Affiliation Department of Logistics Management, Hebei Jiaotong Vocational and Technical College, Shijiazhuang, China
Competing Interests
The authors have declared that no competing interests exist.