Funding for this research was provided by:
the National Natural Science Foundation of China (71571192, 71874112)
the Beijing Intelligent Logistics System Collaborative Innovation Center (2018KF-06)
the Major Project for National Natural Science Foundation of China (71790615)
the State Key Program of National Natural Science of China (71431006)
Article History
Received: 27 March 2019
Accepted: 28 August 2019
First Online: 10 September 2019