A5100607535- Blockchain Technology Applications and Security
- Cloud Computing and Resource Management
- Caching and Content Delivery
- Distributed systems and fault tolerance
- IoT and Edge/Fog Computing
- Peer-to-Peer Network Technologies
- Distributed and Parallel Computing Systems
- Cloud Data Security Solutions
- Advanced Decision-Making Techniques
- Cryptography and Data Security
- Advanced Image and Video Retrieval Techniques
- Human Mobility and Location-Based Analysis
- Security and Verification in Computing
- Recommender Systems and Techniques
- User Authentication and Security Systems
- Privacy-Preserving Technologies in Data
- Modular Robots and Swarm Intelligence
- Opportunistic and Delay-Tolerant Networks
- Quantum Computing Algorithms and Architecture
- Mobile Crowdsensing and Crowdsourcing
- Currency Recognition and Detection
- Mental Health via Writing
- Optimization and Search Problems
- Technology and Security Systems
- Text and Document Classification Technologies
National University of Defense Technology
2015-2024
Changsha University
2019-2021
Zhejiang Institute of Mechanical and Electrical Engineering
2009
Ministry of Water Resources of the People's Republic of China
2004
Tao Systems (United States)
2001
Summary The blockchain is a distributed ledger that records all transactions and operations in shared manner. Public blockchains such as Bitcoin realize decentralization at the cost of mining overhead, which not suitable for real‐life scenarios requiring high throughput. Techniques consortium improve efficiency through partial decentralization. However, consensus algorithms used existing state‐of‐the‐art face many challenges when dealing with commercial applications. For example,...
With the development of Blockchain technology, permissioned Blockchains are getting more and attention from researchers because applications based on practical easier to be carried out. This paper aims design a dedicated consensus protocol for Blockchains. The existing protocols applied either derived public such as Proof Work (PoW) or Stake (PoS), with full decentralization, resulting in low transaction processing efficiency; traditional Byzantine fault-tolerant (BFT) Practical BFT (PBFT)...
With the development of Economic Globalization, traditional single-cloud providers can not meet needs explosive, global, diverse cloud services. JointCloud aims at empowering cooperation among multiple Cloud Service Providers (CSP) to provide cross-cloud Our work in this paper is mainly focused on accounting technology for computing and we propose JCLedger - a blockchain based distributed ledger. A new participant CCP (Cryptocurrency Provider) introduced into collaboration environment...
JCLedger is a BlockChain-based distributed ledger for JointCloud that can improve the reliability and convenience of cloud resource exchanges by empowering cooperation among multiple clouds. The biggest challenge implementation approach to consensus. existing consensus algorithms public BlockChain, such as proof work (PoW) or stake (PoS) does not apply JointCloud, because they require massive computing power with low throughput monopoly risk. In this paper, we propose practical...
Blockchain is distributed ledger with the advantage of high security, tamper resistant and traceability. However, in process growth Blockchain, network isolation hinders cooperative operation among different Blockchains greatly restricts development Blockchain. There an urgent need to break barriers Blockchains[1], thus cross-chain communication become a new trend technology[2]. In this paper, we propose CVEM, value exchange mechanism which supports kind tokens transfer cross-chain. First,...
Nowadays, while we are enjoying the convenience brought by such a huge repository of online web information, may come across difficulties in finding pages want related to particular information searching for. Hence, it is essential classify documents facilitate search and retrieval pages. Existing algorithms work well with small quantity pages, whereas, they become slow even non-effective dealing large scale Recently, some these were adapted distributed platforms which boosted their...
Quantum computation, as part of the broader field quantum information, represents an assembly concepts and techniques that concern nature processing information based on mechanics. computation utilizes unique resources such superposition entanglement to encode process has been proved be dominantly advantageous over classical certain important scientific engineering problems. Potential applications are expected influence future technology many other related fields deeply significantly. In...
JointCloud is a new generation of cloud computing model which facilitates developers to customize services. JCLedger blockchain based distributed ledger for can make resources exchange more reliable and convenient, it the combination BlockChain. One most important elements creating consensus algorithm. PoW (Proof Work) algorithm Bitcoin, proved be quite safe but needs much power. The original not suitable because identities participants are equal in power, may lead accounting monopoly,...
Nowadays, cloud computing is hard to effectively sustain the implementation of commercial model Internet Service globalization. There a growing trend build an environment service, with capacity serve anytime and anywhere, by mutual cooperation between service providers around world. However, this tendency will raise key issue which how provide benign environment, that allows self-collaboration fair competition, for different diverse stakeholder. Inspired concept structure Service-Oriented...
In unmanned collaborative cognition scenarios, traditional IoT systems are facing with data security and node privacy problems. However, blockchain together encryption technique enables the trustless network due to tamper-proof, anonymity unbreakable properties. Nevertheless, there still some shortages when combining systems, for example storage consumption. Generally speaking, validation nodes in need store a complete copy of ledger so as verify transactions reach whole consensus. many...
As the new paradigm of JointCloud Computing matures, enterprises are trying to build multiple Kubernetes clusters on different clouds deploy tasks, with advantages disaster backup, low latency, and avoidance single vendor lock-in, etc. Tasks in a environment, always have highly diversified resource demands CPU, memory, disk, network. However, mismatch between these tasks heterogeneous can easily cause many fragments, resulting availability. Therefore, task scheduling strategy is key solving...
Compared with public blockchain, consortium blockchain is more secure and controllable deployed in an enterprise scenario. Byzantine fault tolerance (BFT) consensus widely applied blockchain. Although PBFT the most classic practical BFT message complexity O(n <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> ), it still faces some security threats has low efficiency. To address these issues, we propose a trusted (S2BFT) based on...
In blockchain, there has long been a contradiction between the limited ability and uncertain requirements of processing transactions, which seriously restricts practical application blockchain. Therefore, how to improve scalability blockchain become an urgent issue be solved. Some existing works have achieved expansion through increasing upper limit block size permanently, makes trade-off "Mundellian Trilemma " in (i.e. system cannot optimal all three dimensions scalability, security...