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Blockchain-Enabled Federated Learning with Differential Privacy for Internet of Vehicles

Computers, Materials & Continua 2024年第10期81卷 1581-1593页

作者： Chi Cui Haiping Du Zhijuan Jia yuchu he Lipeng Wang School of Information Science and Technology Zhengzhou Normal UniversityZhengzhou450044China School of Electrical Computer and Telecommunications EngineeringUniversity of WollongongWollongongNSW 2500Australia

The rapid evolution of artificial intelligence(AI)technologies has significantly propelled the advancement of the Internet of Vehicles(IoV).With AI support,represented by machine learning technology,vehicles gain the capability to make intelligent *** a distributed learning paradigm,federated learning(FL)has emerged as a preferred solution in *** to traditional centralized machine learning,FL reduces communication overhead and improves privacy *** these benefits,FL still faces some security and privacy concerns,such as poisoning attacks and inference attacks,prompting exploration into blockchain integration to enhance its security *** paper introduces a novel blockchain-enabled federated learning(BCFL)scheme with differential privacy(DP)tailored for *** order to meet the performance demanding IoV environment,the proposed methodology integrates a consortium blockchain with Practical Byzantine Fault Tolerance(PBFT)consensus,which offers superior efficiency over the conventional public *** addition,the proposed approach utilizes the Differentially Private Stochastic Gradient Descent(DP-SGD)algorithm in the local training process of FL for enhanced privacy *** results indicate that the integration of blockchain elevates the security level of FL in that the proposed approach effectively safeguards FL against poisoning *** the other hand,the additional overhead associated with blockchain integration is also limited to a moderate level to meet the efficiency criteria of ***,by incorporating DP,the proposed approach is shown to have the(ε-δ)privacy guarantee while maintaining an acceptable level of model *** enhancement effectively mitigates the threat of inference attacks on private information.

关键词： Blockchain federated learning differential privacy Internet of Vehicles

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Modeling and Simulation of heterogeneous Traffic Flow in the Vicinity of Intersections Considering Communication Delay

Modeling and Simulation of Heterogeneous Traffic Flow in the...

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第三十九届中国控制会议

作者： yuchu he Zhijuan Jia Yage Cheng Zhe Li Lipeng Wang Junjun Fu College of Information Science and Technology Zhengzhou Normal University School of Information Engineering Zhengzhou University

With the rapid development and application of vehicle communication technology and autonomous driving technology, the traffic flow of freeways and urban roads will inevitably change from traditional traffic flow（all vehicles are controlled by human drivers） to heterogeneous traffic flow（including CACC and other autonomous vehicles）. At present, in the field of heterogeneous traffic flow, scholars mostly take modeling and simulation as the means to study the impact of heterogeneous flow in the freeway scene, but few studies discuss the impact of heterogeneous traffic flow on urban roads, especially in the scene of signal control area. In view of this, taking the IDM model as the traditional traffic flow model and the ACC model proposed by University of California at Berkeley as an automatic driving model, this paper builds a heterogeneous traffic flow model in the vicinity of intersections at the background of typical urban traffic scene and also preliminary explore the influence mechanism of the mix of autopilot on the traffic flow in the signal control area through simulation experiments, which can provide reference for the development and application of automatic driving technology.

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“一带一路”新形势下新疆石油和化学工业发展的若干思考

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化工进展 2019年第1期38卷 171-182页

作者：黄晟何雨初李振宇燕山大学河北秦皇岛066004 多弗国际控股集团有限公司北京100124

新疆拥有丰富的石油、煤炭和天然气储量,21世纪以来开发水平不断提升,带动了新疆的石油和化学工业快速发展,已成为新疆的重要支柱产业。随着新欧亚大陆桥建设和欧亚铁路开通运输服务、中哈原油管道稳定运行、中亚天然气管道建设发展,新... 详细信息

新疆拥有丰富的石油、煤炭和天然气储量,21世纪以来开发水平不断提升,带动了新疆的石油和化学工业快速发展,已成为新疆的重要支柱产业。随着新欧亚大陆桥建设和欧亚铁路开通运输服务、中哈原油管道稳定运行、中亚天然气管道建设发展,新疆在我国与中亚地区国家的交通、能源、贸易等领域合作中的作用不断突显。本文深入分析了新疆石油和化学工业发展的现状、中亚国家与我国能源合作的现状和前景,对新疆发展石油化工和新型煤化工产业进行了态势分析,明确提出在"一带一路"新形势下,新疆发展石油和化学工业仍有较大优势,应继续拓宽资源来源,把重点放在向化工和材料转型,沿G30高速公路布局发展现代石油化工,利用新疆准东煤资源优势发展现代煤化工,走出去利用中亚国家低价天然气资源发展甲醇化工,从而推动新疆石油化学工业继续发展。

关键词：石油天然气煤炭石油工业化学工业一带一路新疆

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纳米微球深部调驱技术应用与效果分析

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石化技术 2020年第7期27卷 67-68页

作者：尉瑞龙贺玉楚中国石油吐哈油田公司鄯善采油厂新疆鄯善838202

2018年温米油田温西三区块纳微米级聚合物微球调驱取得较好效果,因此考虑在同类性质的温5-5井组进行纳米微球深部调驱扩大试验。2019年应用超分子材料将纳米级微球送至地层深部,逐级对地层孔吼进行封堵,使注入水在油藏中不断改变流向,... 详细信息

2018年温米油田温西三区块纳微米级聚合物微球调驱取得较好效果,因此考虑在同类性质的温5-5井组进行纳米微球深部调驱扩大试验。2019年应用超分子材料将纳米级微球送至地层深部,逐级对地层孔吼进行封堵,使注入水在油藏中不断改变流向,最大限度地提高注入水的波及体积,实现深部调驱。纳米微球调驱技术为老区高含水注水油田提高采收率提供了有效的技术手段,可以在类似油田推广应用。

关键词：纳米微球聚合物毛管力渗流动力深部调驱

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新媒体视域下海南品牌农业营销路径研究

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热带农业科学 2024年第10期44卷 128-133页

作者：陆开启何瑜楚张鸿艺孙涛华东师范大学上海200241 海南大学海南海口570228

中国已进入新媒体时代,品牌农业营销模式也随之发生了巨大改变,需要探索新的营销路径,与新媒体结合成为品牌农业发展的重要路径。文章紧扣新媒体时代大环境,阐述品牌农业与新媒体技术在品牌塑造方面的内涵与机理,海南品牌农业建设现状;... 详细信息

中国已进入新媒体时代,品牌农业营销模式也随之发生了巨大改变,需要探索新的营销路径,与新媒体结合成为品牌农业发展的重要路径。文章紧扣新媒体时代大环境,阐述品牌农业与新媒体技术在品牌塑造方面的内涵与机理,海南品牌农业建设现状;以新媒体为视角分析品牌农业营销存在的问题,并针对每项问题提出相应的解决措施;从供应端和消费端入手,绘制新媒体视域下海南品牌农业的营销路径,以期为海南省乃至全国相关企业的品牌构建和传播提供借鉴。

关键词：新媒体品牌农业营销方式品牌塑造路径优化

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基于安全多方的区块链可审计签名方案

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计算机应用 2020年第9期40卷 2639-2645页

作者：王韫烨程亚歌贾志娟付俊俊杨艳艳何宇矗马威郑州师范学院信息科学与技术学院郑州450044 华北水利水电大学信息工程学院郑州450044

针对可信问题,提出了一种基于安全多方的区块链可审计签名方案。该方案引入了带有时间戳的信任向量,并构建由多维向量组构成的信任矩阵用以定期记录参与者的可信行为,从而为参与者建立一种可信的评估机制,最后将评估结果存储到区块链中... 详细信息

针对可信问题,提出了一种基于安全多方的区块链可审计签名方案。该方案引入了带有时间戳的信任向量,并构建由多维向量组构成的信任矩阵用以定期记录参与者的可信行为,从而为参与者建立一种可信的评估机制,最后将评估结果存储到区块链中作为查证的依据。在确保参与者可信的前提下,通过秘密共享技术构建了安全可信的签名方案。安全分析表明,该方案可以有效减少恶意参与者带来的破坏,可检测参与者的可信度,并可以抵抗移动攻击。性能分析表明,该方案具有较低的计算复杂度和较高的执行效率。

关键词：安全多方计算区块链可审计签名方案信任机制秘密共享

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基于SUMO的城市交叉口仿真平台搭建

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计算机时代 2022年第6期 138-141页

作者：李千千王筱涵朱强何宇矗杨艳艳郑州师范学院信息科学与技术学院河南郑州450044

对城市交叉口进行交通仿真模拟具有较大意义。基于SUMO[7]这一交通仿真软件,搭建三车道、两相邻交叉口的仿真环境,以智能驾驶模型为对象,测试智能驾驶模型的交通参数。实验证明,创建的交叉口仿真系统具有与真实道路交通流相似的交通参... 详细信息

对城市交叉口进行交通仿真模拟具有较大意义。基于SUMO[7]这一交通仿真软件,搭建三车道、两相邻交叉口的仿真环境,以智能驾驶模型为对象,测试智能驾驶模型的交通参数。实验证明,创建的交叉口仿真系统具有与真实道路交通流相似的交通参数及特征。

关键词： SUMO Traci 城市交叉口交通流交通仿真

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The Effect of Fly Ash Quality on the Engineering Properties of High-Performance Concrete

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沈阳建筑大学学报（自然科学版） 2012年第6期28卷 1074-1082页

作者： PENG yuchu Department of Tourism and Leisure Management Taiwan Hospitality and Tourism College Taipei Chinese 11473

Fly ash is the most inexpensive cementitious material,and its presence in concrete has increased in recent years because it has become more durable and environmentally *** study examines densified mixture concrete and the effect of fly ash quality on high-flow,high-strength *** show that when the same mixture achieves identical flow standards(slump >250 mm;slump flow >600 mm),the fly ash quality affects the nature of the concrete;additionally,and adding Class F fly ash to concrete(loss on ignition=6%)is more workable than adding Class C fly ash(loss on ignition=3%).However,adding fly ash with a high loss on ignition(9%)to concrete requires a substantial increase in the mixing water and a dose of superplasticizer to achieve the required *** reduces the quality of the concrete,which subsequently deteriorates its safety and durability.

关键词： fly ash durability environmentally friendly loss on ignition

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Neurotensin receptor 1 overexpression in inflammatory bowel diseases and colitis-associated neoplasia

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World Journal of Gastroenterology 2013年第28期19卷 4504-4510页

作者： Xianyong Gui Shuhong Liu yuchu Yan Zuhua Gao Calgary Laboratory Services and Department of Pathology and Laboratory Medicine University of Calgary Calgary Alberta T2N 2T9 Canada

AIM: To explore the association of neurotensin receptor 1 (NTSR1) with inflammatory bowel diseases (IBD) and colitis-associated neoplasia. METHODS: NTSR1 was detected by immunohistochemistry in clinical samples of colonic mucosa with IBD colitis, colitis-associated raised low-grade dysplasia (LGD) including dysplasia-associated lesions or masses (DALMs, n = 18) and adenoma-like dysplastic polyps (ALDPs, n = 4), colitis-associated high-grade dysplasia (HGD, n = 11) and colitis-associated colorectal carcinoma (CACRC, n = 13), sporadic colorectal adenomatous polyp (SAP, n = 17), and sporadic colorectal carcinoma (SCRC, n = 12). The immunoreactivity of NTSR1 was semiquantitated (as negative, 1+, 2+, and 3+) and compared among different ***: NTSR1 was not detected in normal mucosa but was expressed similarly in both active and inactive colitis. LGD showed a significantly stronger expression as compared with non-dysplastic colitic mucosa, with significantly more cases showing > 2+ intensity (68.75% in LGD vs 32.26% in nondysplastic mucosa, P = 0.001). However, no significant difference existed between DALMs and ALDPs. CACRC and HGD showed a further stronger expression, with significantly more cases showing 3+ intensity than that in LGD (61.54% vs 12.50% for CACRC vs LGD, P = 0.022; 58.33% vs 12.50% for CACRC/HGD vs LGD, P = 0.015). No significant difference existed between colitis-associated and non-colitic sporadic neoplasia. CONCLUSION: NTSR1 in colonic epithelial cells is overexpressed in IBD, in a stepwise fashion with sequential progress from inflammation to dysplasia and carcinoma.

关键词： Neurotensin Neurotensin receptor Inflammatory bowel diseases Dysplasia Colitis-associated neoplasia Dysplasia-associated lesion or mass Sporadic adenoma Colorectal carcinoma

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Stepwise decomposition and relative radiometric normalization for small footprint LiDAR waveform

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Science China Earth Sciences 2011年第4期54卷 625-630页

作者： QIN yuchu LI Bin NIU Zheng HUANG WenJiang WANG ChangYao State Key Laboratory of Remote Sensing Science Institute of Remote Sensing Applications Chinese Academy of Sciences Beijing 100101 China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

As an advanced generation instrument of earth observation,small footprint full waveform light detection and ranging(LiDAR) technology has been widely used in the past few *** and radiative correction is an important step in waveform data processing,it influences the accuracy of both information extraction and further *** on a stepwise strategy,this study adopts Gaussian mixture model to approximate the LiDAR *** addition to waveform decomposition,a relative correction model is proposed in this paper,the model considers the transmit pulses as well as the different of the travel path for implementing LiDAR waveform relative *** of the stepwise decomposition and relative correction model are carried out on LiDAR waveform acquired over Zhangye,*** results indicate that stepwise decomposition identified the number of peaks in LiDAR waveforms,center position and width of each peak *** relative radiometric correction also improves the similarity of waveforms which acquired at the same target.

关键词： LiDAR waveform Gaussian mixture model stepwise decomposition relative radiometric correction

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