Yang, Sanqiang
Huang, Yong
Funding for this research was provided by:
Natural Science Foundation of Hebei Province (E2018201106)
Hebei Province High-level Talents Funding Project (B2017005024)
Department of science and technology, Ministry of transport (2016009, 2016010)
Department of international cooperation, Ministry of science and technology (CU03-32)
Hebei Provincial Department of transportation (TH-201918, TH-201925)
Xinjiang Uygur Autonomous Region Fund Committee (2018E02075)
Article History
Received: 27 February 2020
Accepted: 3 June 2020
First Online: 23 July 2020
Compliance with ethical standards
:
: There are no potential competing interests in our paper.