报 告 人：Professor Wenbing Zhao，Department of Electrical Engineering and Computer Science Cleveland State University 

报告时间：12月20日（周四）10:30～11:30

报告地点：宝山校区计算机大楼1001室

邀 请 人：李卫民 副教授

报告摘要：

In this talk, Dr. Zhao will first give an overview of the blockchain technology as it is used in Bitcoin. Then he will examine the evolution of the blockchain technology, from the dream of a digital currency, to the creation of Bitcoin, to the smart contract based Ethereum, and a new crop of mechanisms for building distributed consensus and trust. He will conclude his talk by discussing the role played by randomization in reaching consensus and trust in an open untrusted environment, and the impact of asynchrony to the consensus process. Specific topics this talk will cover include the data structure of the blockchain, proof of work, proof of stake, proof of authority, forks and conflict resolution, attacks on blockchain, the FLP impossibility result for asynchronous distributed system, the Ben-Or randomized consensus algorithm, optimistic replication, and Byzantine fault tolerance. 

报告人简介:

 Dr. Zhao is a Professor at the Department of Electrical Engineering and Computer Science, Cleveland State University. He got his BS and MS degrees from the Physics Department in Peking University. He earned his Ph.D. at University of California, Santa Barbara in 2002. He has over 180 peer-reviewed publications. Dr. Zhao’s research spans from dependable distributed systems to human centered smart systems. His research has been funded by the US NSF, US Department of Transportation, Ohio Bureau of Workers’ Compensation, Ohio Department of Higher Education, the Ohio Development Services Agency, and Woodruff Foundation. He has delivered more than 10 keynotes, tutorials, public talks and demonstrations in various conferences, industry and academic venues. Dr. Zhao is an associate editor for IEEE Access, MDPI Computers, and PeerJ Computer Science, and a member of the editorial board of several international journals, including Applied System Innovation, Internal Journal of Parallel, Emergent and Distributed Systems, and International Journal of Distributed Systems and Technologies. He is currently an IEEE Senior Member and serves on the executive committee of the IEEE Cleveland Section.