Yang, Liu
Xiuju, Liu
Huixia, Jin
Yuanyuan, Fu
Chi, Zhang
Funding for this research was provided by:
the Natural Science Foundation of Hunan Province (2018JJ2023)
Shandong Province Education and Science Planned Research Topics during the “12th Five-Year Plan” Special Computer Teaching Project (YBJ15006)
Article History
Received: 31 January 2019
Accepted: 25 April 2019
First Online: 10 May 2019
Competing interests
: The authors declare that they have no competing interests.
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