1. School of Computer Science Qufu Normal University Rizhao China
2. Weifang Key Laboratory of Blockchain on Agricultural Vegetables Weifang University of Science and Technology Shouguang China
3. Department of Computing Macquarie University Sydney Australia
4. Department of Computer Science Norwegian University of Science and Technology Gjøvik Norway
5. Faculty of information technology Macau University of Science and Technology Macau China
6. General Education Department Shandong First Medical University (Shandong Academy of Medical Sciences) Taian China