About the Authors
- Yongming Song
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Roles Conceptualization, Formal analysis, Funding acquisition, Investigation, Methodology, Project administration, Resources, Software, Visualization, Writing – original draft
* E-mail: xinshiji7819@163.com
Affiliation School of Management and Economics, University of Electronic Science and Technology of China, Chengdu, P. R. China
- Jun Hu
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Roles Data curation, Supervision, Validation, Writing – review & editing
Affiliation State-owned Assets Supervision and Administration Commission in Yunnan Province of China, Kunming, P. R. China
Competing Interests
The authors have declared that no competing interests exist.