Funding for this research was provided by:
National Natural Science Foundation of China (72071152)
Youth Innovation Team of Shaanxi Universities (2019)
General Project of Statistical Science Research of National Bureau of Statistics (2021LY078)
Soft Science Research Program of Shaanxi Provincial Department of Science and Technology (2022KRM114)
Key projects of Scientific Research Program of Shaanxi Provincial Department of Education (21JT035)
Article History
Received: 24 June 2022
Accepted: 1 September 2022
First Online: 12 September 2022
Declarations
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: All authors declare that they have no conflicts of interest.
: Yes.
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