Prof. Zhihan Lv
An Optimized Byzantine Fault Tolerance Algorithm For Consortium Blockchain
According to different application scenarios of blockchain system, it is generally divided into public chain, private chain and consortium chain. Consortium chain is a typical multi-center blockchain, because it has better landing, it is supported by more and more enterprises and governments. We analyze the advantages and problems of PBFT algorithm for the application scenarios of the consortium chain. In order to be more suitable for consortium chains, we propose a new optimized consensus algorithm based on PBFT. Aiming at the shortcomings of PBFT, such as the inability to dynamically join nodes, low multi-node consensus efficiency, and primary master node selection, our optimized algorithm has designed a hierarchical structure to increase scalability and improve consensus efficiency. The simulation results show that compared with PBFT and RAFT, our new consensus algorithm increases the data throughput while supporting more nodes, and effectively reducing the consensus delay and the number of communication times between nodes.
Virtual Reality, Internet of Things
Dr. Zhihan Lv, a senior member of IEEE and a fellow of the British Computer Society (BCS Fellow). The Ocean University of China and the University of Paris 7 jointly cultivate a doctorate degree. He has served as a research and development engineer at the French National Research Center, a postdoctoral fellow at Umeå University in Sweden, a senior researcher at the FIVAN Foundation in Spain, a postdoctoral fellow at University College London, a postdoctoral fellow at the University of Barcelona in Spain, and an assistant professor at the Shenzhen Advanced Institute of the Chinese Academy of Sciences. He was Marie Curie Fellow of the European Union. He has published more than 270 high-quality papers in virtual reality, Internet of Things, big data and other fields, including more than 60 first authors and more than 40 corresponding authors. Including more than 160 SCI papers. A total of 35 papers were published in the top journal IEEE/ACM Transactions. More than 7000 citations on Google Scholar, H-Index 44. Presided over one of the National Natural Science Foundation Youth Fund and the Shandong Natural Science Foundation Youth Fund.
Extensive cooperation with scholars from the United States, Britain, France, Spain, Sweden, Italy, South Korea, Japan, and Qatar. Research in recent years has been published in IEEE Transaction on Industrial Information, IEEE Transactions on Fuzzy Systems, IEEE Transactions on Systems, Man, and Cybernetics: Systems, IEEE Transactions on Intelligent Transportation Systems, IEEE Transaction on Big Data, IEEE Transactions on Emerging Topics in Computing, IEEE Transactions on Network Science and Engineering, ACM Transactions on Multimedia Computing, Communications, and Applications, ACM Transactions on Internet technology, ACM Transactions on Intelligent Systems and Technology, IEEE/ACM Transactions on Computational Biology and Bioinformatics, IEEE Journal on Selected Areas in Communications, IEEE Journal of Selected Topics in Signal Processing, IEEE Communications Magazine, IEEE Network, Pattern Recognition, IEEE/CAA Journal of Automatica Sinica and other top international journals. There are also many papers published in top international conferences such as ICCV, ACM Multimedia, ACM Siggraph Asia, ACM CHI, IEEE Virtual Reality, IEEE INFOCOM, IEEE ICWS, Eurographics, etc. Published more than ten highly cited papers and one hot paper.
Since 2006, he has been engaged in the research and development and application of virtual reality and the Internet of Things. It is supported by 863, the National Natural Science Foundation of China, the Natural Science Foundation of Shandong Province, the Key Research and Development Program of Shandong Province, the Small and Medium-sized Enterprise Innovation Fund of the Ministry of Science and Technology, and the Industrial Internet Platform of the Ministry of Industry and Information Technology, EPSRC, the Marie Curie Action of the European Union's Seventh Framework, and the European Research Council Advanced Funding, he has conducted research in three-dimensional urban planning, network virtual reality engine, network three-dimensional interactive virtual community, and three-dimensional e-commerce have been completed successively /Government affairs, network intelligent landscape map, sea and land 3D simulation system, 3D biological information system, virtual neurorehabilitation, 3D concert reconstruction, development and integration of digital twin system. The research and development results are applied to the Leshan Giant Buddha, the Shanghai government, and other municipal planning bureaus and enterprises. Won the "Best idea" award in the UMINOVA academic business competition in Sweden, the special prize in the "Challenge Cup" entrepreneurial plan competition in China, the "Chunhui Cup" award in the innovation and entrepreneurship competition for Chinese overseas students, and the third prize in the China "Challenge Cup" extracurricular academic technology competition. The third prize of Shandong Province Graduate Student Outstanding Scientific and Technological Innovation Achievement Award, and the third prize of Shandong Province Higher Education Institution Humanities and Social Science Outstanding Achievement Award. Participated in the Paris Chinese Scholars and Students Association, the Paris Regional Scholars and Students Association and other organizations and actively served during the study in France. During his work in Sweden, he served as the chairman of the Umeå Chinese Students and Scholars Association.
Instructed graduate students to win the second prize of the 6th Qingdao University Science and Technology Innovation Competition in 2019, the third prize of the Shandong Province Graduate Outstanding Achievement Award in 2019, the second prize of the 2018 China University Computer Competition-WeChat Mini Program Application Development Competition and the 2019 China First prize of the National University Computer Contest-WeChat Mini Program Application Development Contest. He has instructed graduate student Chen Jian to publish blockchain-related papers as the first author in Future Generation Computer Systems. On the basis of this paper, Chen Jian won the 2019 Qingdao University Graduate Academic Star (10 in total) and the 2020 Qingdao University Excellent Master Thesis. Based on the results of postgraduate training, Dr. Zhihan Lv won the 2020 Qingdao University Outstanding Graduate Instructor Award.
Dr. Zhihan Lv served or served as an editorial board member of high-level journals, including Plos one, IEEE Access, IET Image Processing, and Neurocomputing. Served as the Lead Guest Editor of several well-known journals, including IEEE Transactions on Industrial Informatics, IEEE Network, IEEE Transactions on Intelligent Transportation Systems, IEEE Sensors, IEEE Consumer Electronics Magazine, IEEE Communications Standards Magazine, IEEE Journal of Biomedical and Health Informatics, Future Generation Computer Systems, Neurocomputing and Applications, Neurocomputing, etc., organized more than 40 special issues. Served as the vice chair of ACM IUI 2015-2020, IEEE INFOCOM 2020 workshop, ACM MobiCom 2020 workshop, IEEE VTC2017-Fall, IEEE CHASE Workshop 2016, 2017, IEEE/CIC WIN Workshop 2016, ISAIR2021 and other international conferences and TPC members. In 2018, he won the IEEE Access Outstanding Associate Editor Award.
Dr. Zhihan Lv has reviewed more than 260 manuscripts for high-level journals and conferences, including IEEE Transaction on Multimedia, ACM Transactions on Multimedia Computing Communications and Applications, IEEE Transactions on Industrial Informatics, IEEE Transactions on Big Data, IEEE Transactions on Mobile Computing, IEEE Transactions on Learning Technologies, IEEE Transactions on Emerging Topics in Computing, IEEE Transactions on Computers, IEEE Transactions on Visualization and Computer Graphics, IEEE Transactions on Intelligent Transportation Systems, IEEE/ACM Transactions on Computational Biology and Bioinformatics, ACM Transactions on Internet Technology, IEEE Network, IEEE MultiMedia, IEEE Internet of Things Journal and other journals and ACM MUM, ACM CHI, ACM DIS, IEEE EuroVis, ACM UIST, ACM MobileHCI, ACM CHIPLAY, ACM CSCW, ACM SUI, ACM ITS, IEEE VAST, IEEE VR, ACM IUI, IEEE 3DUI, ACM TVX, ACM Creativity & Cognition, ACM EICS, ACM IDC, IEEE ICSIPA, GI, IEEE ITSC, IEEE Sensors, ACM ACI, ACM VRST, ACM ISS, ACM HRI and other conferences. He is the reviewer of the Swiss National Natural Science Foundation. He is a doctoral dissertation reviewer at the Indian Institute of Technology and a master's dissertation reviewer at the University of Technology Sydney.