Results 21 to 30 of about 1,656 (145)
Topology optimization and forwarding strategy design for blockchain network [PDF]
, 2022 In order to solve the problem of the low data transmission efficiency of the blockchain network, an optimization method of blockchain transmission efficiency was proposed to optimize the network topology and forwarding strategy.First, the trusted value ...
Chuang SUN +5 more
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Conservation Biology, Volume 33, Issue 3, Page 685-696, June 2019., 2019 Abstract Assessing causes of population decline is critically important to management of threatened species. Stochastic patch occupancy models (SPOMs) are popular tools for examining spatial and temporal dynamics of populations when presence–absence data in multiple habitat patches are available. We developed a Bayesian Markov chain method that extends
Nicolas Alcala +5 more
wiley +1 more source
, 2018 区块链技术对社会的发展和运作带来了重大影响,对税务监管工作既是挑战也是机遇。对此,本文从基于信息生态链的\"企业—利益相关者—制度\"三因素机理分析入手,探讨了区块链技术解决涉税信息的信息不对称的可行性,对涉税信息流转进行了重新的梳理,提出了\"区块层—合约层—数据层—报告层\"的涉税信息平台构建逻辑。最后,以区块链、大数据等为技术支撑 ...
周河山, 汤晓冬
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Method for detecting collusion attack node in road condition information sharing based on reputation point [PDF]
, 2021 Aiming at the problem that on occasion of the release of false road condition information by collusion nodes in the Internet of vehicles collaboratively, message authenticity could not be guaranteed in the process of road condition information sharing, a
Hao TANG, Shichang XUAN, Wu YANG
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Research on key technologies of safety monitoring data sharing for railway engineering construction based on blockchain [PDF]
, 2021 In order to solve the problems that the monitoring data was easy to be tampered with in the process of railway engineering construction safety monitoring, and the authenticity of the data might be questioned during the accountability of accidents, a ...
Chunhui PIAO +3 more
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大数据, 2022 去中心化金融（DeFi）是一种基于区块链和智能合约提供金融服务的新范式，现已涉及包括借贷及其衍生品在内的众多领域。因此，作为DeFi基础的交易机制成为重要的关注点，其直接影响着上层应用的稳定性。主要讨论DeFi领域的交易机制，首先介绍与交易机制相关的概念和协议；然后通过实现方式对交易机制进行分类，分别详细讨论了基于交易委托账本、自动做市商和聚合器方法的交易机制实现，并比较归纳实现方案之间的区别与联系；最后分析并总结了去中心化交易面临的公平性、安全性、匿名性问题，提出了相关的未来研究方向。
邓钇敏, 司世景, 王健宗, 李泽远, 肖京
doaj +1 more source
, 2019 数字经济时代，探究数据流动与转移的授权许可管理问题需要从新的视角出发。本文以 DATA的思维模式和框架从简单定义到实际应用对这一问题进行了系统性的阐述，层层深入，进一步厘清了数据流动、数据转移和数据许可等基本概念，分析了各个概念的基本类型。从国家数据战略、企业数据战术和国内经典案例三个角度出发，追踪前沿热点事件，旨在构建起行之有效的解决方案。
樊舒, 顾立平
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, 2019 比特币价格的持续升高引起了社会各界对于虚拟货币和区块链技术的关注。本文运用信息不对称和交易成本理论对现有会计与审计业务存在的问题和原因进行分析,指出区块链技术中去中心化、..
陈亚盛, 黄锨
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Blockchain data sharing scheme based on localized difference privacy and attribute-based searchable encryption [PDF]
, 2023 Aiming at the problem that traditional cloud-based data sharing schemes rely on trusted third parties and only focus on data privacy protection or access control, a blockchain data sharing scheme based on localized difference privacy and attribute-based ...
Jianming SHI +3 more
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大数据, 2023 针对当前公益慈善行业存在的善款流向不透明、不可追溯和捐赠信息易篡改等问题，构建了一种基于联盟区块链的公益善款溯源系统模型。共识过程中应用了一种改进的PBFT共识算法——DG-PBFT算法，将原有的主节点随机选举改进为积分制选举，并将原来的三阶段共识优化为两阶段。溯源系统依托Hyperledger Fabric平台进行开发，采用Go语言进行链码开发。配置4个组织，分别对应捐助者、受助者、慈善机构和监管部门。根据功能需求设计智能合约，不仅实现了善款信息的溯源，还能通过该溯源系统进行申诉与监督。实验结果表明 ...
高玮军, 王凯
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