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面向物联网多场景的PBFT共识算法改进方案

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计算机应用研究 2024年第3期41卷 676-682,687页

作者：戚文杰史培中古春生景征骏江苏理工学院计算机工程学院江苏常州213001

物联网与区块链融合过程中,实用拜占庭容错(PBFT)算法存在通信开销大、时延高且无法根据场景与设备差异进行合理划分的不足。为满足物联网多场景应用的问题,提出了一种基于综合评价的改进实用拜占庭容错算法。首先,对节点进行基于性能... 详细信息

物联网与区块链融合过程中,实用拜占庭容错(PBFT)算法存在通信开销大、时延高且无法根据场景与设备差异进行合理划分的不足。为满足物联网多场景应用的问题,提出了一种基于综合评价的改进实用拜占庭容错算法。首先,对节点进行基于性能与信誉值加权的综合评价筛选出符合特定场景需求的节点;然后,进行基于节点综合评价的聚类,形成双层网络架构;最后,将共识过程分为子集群共识和主集群共识。实验结果表明,CE-PBFT拥有较高的容错性和场景适应性,且当场景节点数达到100时,在通信开销和共识时延方面较PBFT分别有着93.9%和87.8%的性能优化。

关键词：物联网区块链实用拜占庭容错多场景综合评价

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油气管道抢修标准化建设探索与实践

油气田地面工程 2024年第5期43卷 57-62页

作者：苑得鑫荆正军中国石油大学(华东)石油工业训练中心

为了提升油气管道抢修队伍安全管理水平,提高抢修作业质量和效率,实现油气管道抢修业务高质量发展,抢修标准化体系建设成为解决该问题的有效途径。在总结油气管道抢修队伍业务特点及管理经验的基础上,凝练出包含抢修管理、抢修作业、抢... 详细信息

为了提升油气管道抢修队伍安全管理水平,提高抢修作业质量和效率,实现油气管道抢修业务高质量发展,抢修标准化体系建设成为解决该问题的有效途径。在总结油气管道抢修队伍业务特点及管理经验的基础上,凝练出包含抢修管理、抢修作业、抢修目视形象等三个方面的油气管道抢修标准化建设方案。其中,抢修管理标准化包括抢修队伍、设备、物资、预案、作业管理等5个标准化,抢修作业标准化包括应急响应程序、现场处置流程、作业步骤、设备集装等4个标准化,抢修目视形象标准化包括通用目视形象、驻地目视形象及抢修、动火作业现场布置等3个标准化。经实践证明抢修标准化建设是提高油气管道抢修队伍安全管理水平的重要举措,能够为日益增长的油气管道抢修业务需求提供重要保障。

关键词：油气管道标准化抢修管理抢修作业抢修目视形象

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Cross-Coupling Reactions of Pyrimidin-2-yl Sulfonates with Phenols and Anilines： An Efficient Approach to C2-Functionalized Pyrimidines

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Chinese Journal of Chemistry 2013年第12期31卷 1495-1502页

作者： zhengjun Quan Fuqiang jing Zhang Zhang Yuxia Da Xicun Wang Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education China Gansu Key Laboratory of Polymer Materials College of Chemistry and Chemical Engineering Northwest Normal University Anning East Road 967# Lanzhou Gansu 730070 China

Pyrimidin-2-yl sulfonates, as an efficient reaction partner, which can be easily prepared from cheap commercial materials, were coupled with phenols and anilines to give a wide array of C2-aryloxy- and arylaminopyrimi... 详细信息

关键词： cross-coupling pyrimindine-2-yl sulfonates C2-aryloxypyrimidines C2-arylaminopyrimidines

Dynamical Interaction Between Information and Disease Spreading in Populations of Moving Agents

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Computers, Materials & Continua 2018年第10期57卷 123-144页

作者： Lingling Xia Bo Song zhengjun jing Yurong Song Liang Zhang Department of Computer Information and Cyber Security Jiangsu Police InstituteNanjing210031China College of Telecommunications and Information Engineering Nanjing University of Posts and TelecommunicationsNanjing210003China Global Big Data Technologies Centre University of Technology SydneySydney2007Australia College of Computer Engineering Jiangsu University of TechnologyChangzhou213001China College of Automation Nanjing University of Posts and TelecommunicationsNanjing210003China

Considering dynamical disease spreading network consisting of moving individuals,a new double-layer network is constructed,one where the information dissemination process takes place and the other where the dynamics of disease spreading *** the basis of Markov chains theory,a new model characterizing the coupled dynamics between information dissemination and disease spreading in populations of moving agents is established and corresponding state probability equations are formulated to describe the probability in each state of every node at each *** Carlo simulations are performed to characterize the interaction process between information and disease spreading and investigate factors that influence spreading *** results show that the increasing of information transmission rate can reduce the scale of disease spreading in some *** infection period and strengthening consciousness for self-protection by decreasing individual’s scope of activity both can effectively reduce the final refractory density for the disease but have less effect on the information *** addition,the increasing of vaccination rate or decreasing of long-range travel can also reduce the scale of disease spreading.

关键词： Complex networks Markov chains theory interaction process spreading dynamics double-layer network

Polynomial Time Algorithm for the Two-Side Exponentiation Problem about Ergodic Matrices over Finite Field

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Wuhan University Journal of Natural Sciences 2012年第3期17卷 233-237页

作者： GU Chunsheng jing zhengjun YU Zhiming School of Computer Engineering Jiangsu Teachers University of Technology Changzhou 213001 Jiangsu China School of Computer Science and Technology University of Science and Technology of China Hefei 230027 Anhui China

By using the minimal polynomial of ergodic matrix and the property of polynomial over finite field,we present a polynomial time algorithm for the two-side exponentiation problem about ergodic matrices over finite field （TSEPEM）,and analyze the time and space complexity of the *** to this algorithm,the public key scheme based on TSEPEM is not secure.

关键词： ergodic matrix characteristic polynomial finite field public key cryptography

A Forward-Secure Multi-Receiver Signcryption Scheme

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Journal of Harbin Institute of Technology(New Series) 2016年第5期23卷 53-61页

作者： Zhimin Yu zhengjun jing Hua Yang Chunsheng Gu Key Laboratory of Cloud Computing and Intelligent Information Processing of Changzhou City Jiangsu University of Technology Changzhou Jiangsu 213001 China College of Computer Nanjing University of Posts and Telecommunications Nanjing 210003 China State Key Laboratory of Information Security Institute of Information Engineering Chinese Academy of Sciences Beijing 100093 China

In order to protect historical ciphertext when the private key leaked in the broadcasting system,the forward-secure multi-receiver signcryption scheme is designed based on the generic graded multilinear mapping encoding structure,which effectively prevents illegal access from intruder to the ciphertext in the past time period when the private key in current time period is *** the generalization of the existing multilinear mapping encoding system,it proposes the generic graded multilinear mapping encoding structure and the generic graded decision Diffie-Hellman *** of the generic graded multilinear mapping encoding system adopted,almost all candidate multilinear mapping encoding systems can automatically adapt to our *** the assumption of generic graded decision Diffie-Hellman problem,it has proved that the scheme has the information confidentiality and unforgeability in the current time *** putting forward the security model of forward-secure multi-receiver signcryption scheme,and under the assumption of generic graded decision Diffie-Hellman problem,it has proved that the scheme has the message forward-confidentiality and *** with other forward-secure public key encryption schemes,the relationship between our scheme and time periods is sub-linear,so it is less complex.

关键词： multilinear mapping forward-secure multi-receiver signcryption confidentiality unforgeability

CRYPTANALYSIS OF AN EXTENDED MQ SIGNATURE SYSTEM HTTM

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Journal of Electronics(China) 2013年第5期30卷 491-499页

作者： jing zhengjun Yu Zhimin Gu Chunsheng Wu Fangsheng Zhao Xiaorong Department of Computer Nanjing University of Posts and Communications Department of Computer Engineeing Jiangsu University of Technology

Since Multivatriate Quadratic(MQ)-based Public Key Cryptosystem(MPKC)has been one of the hot research fields of post-quantum cryptography,it becomes important to analyze the security of new MPKC *** et *** a novel multivariate signature scheme with Hash-based Tame Transformation and Minus(HTTM)in *** this extended MQ-based signature,we can transform it into an SFLASH variant by splitting and merging HT transformation,and solve an equivalent private key corresponding to the public key of ***,the adversary can forge legitimate signature for any message by using this equivalent private key.

关键词： Multivariate Quadratic(MQ) problem Cryptanalysis Equivalent private key Forging signature Hash-based Tame Transformation and Minus(HTTM

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一种应用于策略网络系统的本体融合算法

吉林大学学报（理学版） 2016年第3期54卷 580-586页

作者：韩红章景征骏江苏理工学院计算机工程学院江苏常州213001 南京邮电大学计算机学院南京210003

针对本体模型需要较多专家知识,难以实现大规模、跨自治域的应用,制约策略网络系统发展的问题,提出一种应用于策略网络系统的本体融合算法.该算法能在元本体的基础上,融合不同自治域的本体模型,从而为更大规模的网络提供支持,提高了策... 详细信息

针对本体模型需要较多专家知识,难以实现大规模、跨自治域的应用,制约策略网络系统发展的问题,提出一种应用于策略网络系统的本体融合算法.该算法能在元本体的基础上,融合不同自治域的本体模型,从而为更大规模的网络提供支持,提高了策略网络系统的可扩展性和灵活性.

关键词：策略网络本体融合

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基于GAN网络的煤岩图像样本生成方法

煤炭学报 2021年第9期46卷 3066-3078页

作者：王星高峰陈吉郝鹏程荆正军辽宁工程技术大学电子与信息工程学院辽宁葫芦岛125105 神东煤炭集团公司寸草塔一矿内蒙古鄂尔多斯017205 阜新煤矿集团恒大煤矿辽宁阜新123002

煤矿智能化要求实现智能化开采,其中煤岩识别是实现无人化开采的核心技术之一,近年来基于图像的煤岩识别方法受到广泛关注。受采掘环境影响导致图像获取困难是制约煤岩图像识别的主要因素之一,针对煤岩图像数据短缺的问题提出解决方法... 详细信息

煤矿智能化要求实现智能化开采,其中煤岩识别是实现无人化开采的核心技术之一,近年来基于图像的煤岩识别方法受到广泛关注。受采掘环境影响导致图像获取困难是制约煤岩图像识别的主要因素之一,针对煤岩图像数据短缺的问题提出解决方法并增加数据量,基于在单张图像上训练的生成式对抗网络提出Var-ConSinGAN模型并构建样本生成与特征迁移框架。ConSinGAN模型生成的图像虽然清晰但对于煤岩图像生成来说仍然缺少多样性,改进模型的训练方式和图像重构方法可提高生成煤岩图像的多样性。模型采用金字塔结构,使用多阶段训练方法,每个阶段训练不同尺度的图像,可以生成任意数量图像。在模型中提出了新的图像尺寸变换方法用来生成分辨率不同的重构图像,同时采用曲线函数使每一阶段的迭代次数逐步增加,之后对第1阶段用单张图像生成的结果使用基于辅助分类器的条件生成式对抗网络进行特征迁移。新图像重建方法保持重建图像高分辨率阶段的密度大于低分辨率阶段的密度,新训练迭代函数在减少模型学习图像结构的次数的同时增加模型学习图像纹理细节的次数。新的训练迭代函数可以减少模型迭代的总次数,从而减少模型训练时消耗的计算资源。模型需要输入一张符合正态分布的噪声图片,经过训练,生成器输出满足真实图像分布的生成样本。实验在500张煤岩图像上进行,每张图像生成400张仿真图像,并使用SSIM指标对生成图像的亮度、对比度、结构等3方面进行测评。其中结构性强的煤岩图像其SSIM指标值很低,反之,结构性弱的煤岩图像其SSIM指标值较高。根据实验结果可得结论:Var-ConSinGAN模型缓解了原始GAN在数据不足时无法训练和ConSinGAN生成的煤岩图像具有明显“边框”感且多样性不足的问题;Var-ConSinGAN与ConSinGAN相比模型性能提高了13.8%;特征迁移的实验结果显示不同种类的煤岩之间学习到了彼此没有的特征;增加了煤岩图像数据量。

关键词：样本生成煤岩图像生成式对抗网络煤岩识别特征迁移