1. School of Public Administration, Jilin University, Changchun, China
2. College of Safety Science and Engineering, Liaoning Technical University, Fuxin, China
3. Research Institute for Sustainability – Helmholtz Centre Potsdam (RIFS), Potsdam, Germany
4. National Science Library, Chinese Academy of Sciences, Beijing, China
5. Department of Information Resources Management, School of Economics and Management, University of Chinese Academy of Sciences, Beijing, China