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Integral precession calibration method of PIGA on linear vibration table

Chinese Journal of Aeronautics 2024年第3期37卷 219-236页

作者： Chuang SUN Shun-qing REN Jun-wei CAO ru huo Department of Automation Tsinghua UniversityBeijing 100084China School of Astronautics Harbin Institute of TechnologyHarbin 150001China Beijing National Research Center for Information Science and Technology Tsinghua UniversityBeijing 100084China Faculty of Information technology Beijing University of TechnologyBeijing 100124China

Linear vibration table can provide harmonic accelerations to excite the nonlinear error terms of Pendulous Integrating Gyro Accelerometer(PIGA).Integral precession calibration method is proposed to calibrate PIGA on a linear vibration table in this *** on the precise expressions of PIGA’s inputs,the error calibration model of PIGA is *** angular velocity errors of PIGA are suppressed by integer periodic precession and the errors caused by non-integer periods vibrating are *** complete calibration process,including planning,preparation,PIGA testing,and coefficient identification,is designed to optimize the test operations and evaluate the calibration *** effect of the main errors on calibration uncertainty is analyzed and the relative sensitivity function is proposed to further optimize the test *** and simulation results verify that the proposed 10-position calibration method can improve calibration uncertainties after compensating for the related *** order of calibration uncertainties of the second-and third-order coefficients are decreased to 10^(-8)(rad.s^(-1))/g^(2)and 10^(-8)(rad.s^(-1))/g3,*** with the other two classical calibration methods,the calibration uncertainties of PIGA’s nonlinear error coefficients can be effectively reduced and the proportional residual errors are decreased less than 3×10-6(rad.s^(-1))/g by using the proposed calibration method.

关键词： PIGA Linear vibration table Vibration measurement Calibration Error analysis Uncertainty analysis

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What to Cache：Differentiated Caching Resource Allocation and Management in Information-Centric Networking

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China Communications 2016年第12期13卷 261-276页

作者： ru huo Renchao Xie Hengyang Zhang Tao Huang Yunjie Liu State Key Laboratory of Networking and Switching Beijing University of Posts and Telecommunications Beijing 100876 China Beijing Advanced Innovation Center for Future Internet Technology Beijing 100124 China

Information-centric networking(ICN) aims to improve the efficiency of content delivery and reduce the redundancy of data transmission by caching contents in network nodes. An important issue is to design caching methods with better cache hit rate and achieve allocating on-demand. Therefore, an in-network caching scheduling scheme for ICN was designed, distinguishing different kinds of contents and dynamically allocating the cache size on-demand. First discussing what was appropriated to be cached in nodes, and then a classification about the contents could be cached was proposed. Furthermore, we used AHP to weight different contents classes through analyzing users' behavior. And a distributed control process was built, to achieve differentiated caching resource allocation and management. The designed scheme not only avoids the waste of caching resource, but also further enhances the cache availability. Finally, the simulation results are illustrated to show that our method has the superior performance in the aspects of server hit rate and convergence.

关键词： caching resource allocation management differentiation control process information-centric networking

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SBFT:A BFT Consensus Mechanism Based on DQN Algorithm for Industrial Internet of Thing

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China Communications 2023年第10期20卷 185-199页

作者： Ningjie Gao ru huo Shuo Wang Jiang Liu Tao Huang Yunjie Liu State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing 100876China Faculty of Information Technology Beijing University of TechnologyBeijing 100124China Future Network Research Center Purple Mountain LaboratoriesNanjing 211111China

With the development and widespread use of blockchain in recent years,many projects have introduced blockchain technology to solve the growing security issues of the Industrial Internet of Things(IIoT).However,due to the conflict between the operational performance and security of the blockchain system and the compatibility issues with a large number of IIoT devices running together,the mainstream blockchain system cannot be applied to IIoT *** order to solve these problems,this paper proposes SBFT(Speculative Byzantine Consensus Protocol),a flexible and scalable blockchain consensus mechanism for the Industrial Internet of *** has a consensus process based on speculation,improving the throughput and consensus speed of blockchain systems and reducing communication *** order to improve the compatibility and scalability of the blockchain system,we select some nodes to participate in the consensus,and these nodes have better performance in the *** multiple properties determine node performance,we abstract the node selection problem as a joint optimization problem and use Dueling Deep Q Learning(DQL)to solve ***,we evaluate the performance of the scheme through simulation,and the simulation results prove the superiority of our scheme.

关键词： Industrial Internet of Things Byzantine fault tolerance speculative consensus mechanism Markov decision process deep reinforcement learning

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Computation offloading and resource allocation for UAV-assisted IoT based on blockchain and mobile edge computing

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High Technology Letters 2022年第1期28卷 80-90页

作者： ZHAO Chengze LI Meng SUN Enchang huo ru LI Yu ZHANG Yanhua Faculty of Information Technology Beijing University of TechnologyBeijing 100124P.R.China Beijing Laboratory of Advanced Information Networks Beijing 100124P.R.Chna Chongqing Key Laboratory of Intelligence Perception and Blockchain Technology Chongqing Technology and Business UniversityChongqing 400067P.R.China

Recently,Internet of Things(IoT)have been applied widely and improved the quality of the daily ***,the lightweight IoT devices can hardly implement complicated applications since they usually have limited computing resource and just can execute some simple computation ***,data transmission and interaction in IoT is another crucial issue when the IoT devices are deployed at remote areas without manual *** edge computing(MEC)and unmanned aerial vehicle(UAV)provide significant solutions to these *** addition,in order to ensure the security and privacy of data,blockchain has been attracted great attention from both academia and ***,an UAV-assisted IoT system integrated with MEC and blockchain is *** optimization problem in the proposed architecture is formulated to achieve the optimal trade-off between energy consumption and computation latency through jointly considering computa-tion offloading decision,spectrum resource allocation and computing resource ***-ing this complicated optimization problem,the non-convex mixed integer problem can be transformed into a convex problem,and a distributed algorithm based on alternating direction multiplier method(ADMM)is *** results demonstrate the validity of this scheme.

关键词： Internet of Things(IoT) unmanned aerial vehicle(UAV) mobile edge compu-ting(MEC) blockchain alternating direction multiplier method(ADMM) resource optimization

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Annual advances of traditional Chinese medicine on tumor immunity regulation in 2021

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Traditional Medicine Research 2022年第6期7卷 83-92页

作者： ru-Wei huo Ming-Jie Zhan Bo Zhu Qi Zhi School of Medicine and Integrative Medicine Nanjing University of Chinese MedicineNanjing 210023China School of Biopharmacy China Pharmaceutical UniversityNanjing 211198China Department of Radiology Affiliated Hospital of Nanjing University of Chinese MedicineNanjing 210029China

Traditional Chinese medicine has been used to treat more than 70%of cancer patients in *** Chinese medicine treatment includes the application of traditional Chinese medicine monomers,extracts,classical Chinese medicine compounds,self-made compounds,acupuncture,*** of the anti-tumor effects of traditional Chinese medicine are related to their immune-regulatory *** traditional Chinese medicines improve the sensitivity of chemotherapeutic drugs,enhance tumor-suppressive effects,and decrease adverse *** 2021,research papers from China accounted for about two-thirds of all the papers on traditional Chinese medicine and anti-tumor *** continues to lead the world in the field of anti-tumor immunity of traditional Chinese medicine,and the efficient and productive academic cooperation between China and other countries has promoted the rapid development of this *** this review,we summarize the research progress of traditional Chinese medicine in the field of tumor immunity in 2021 to provide new insights into mechanisms underlying the anti-tumor effects of traditional Chinese medicine.

关键词： traditional Chinese medicine natural product tumor immunity tumor microenvironment

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面向空间信息网络的免配对无证书链上接入认证方法

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通信学报 2024年第8期45卷 136-148页

作者：霍如王志浩邵子豪黄韬北京工业大学信息科学技术学院北京100124 紫金山实验室江苏南京211111 北京邮电大学网络与交换技术国家重点实验室北京100876

传统的地面网络接入认证方法存在单点故障和证书分发过程不透明的问题,难以应对空间信息网络中高度复杂和动态多变的拓扑网络,因此提出了一种面向空间信息网络的免配对无证书链上接入认证方法。首先,结合联盟链和无证书公钥密码分发技术... 详细信息

传统的地面网络接入认证方法存在单点故障和证书分发过程不透明的问题,难以应对空间信息网络中高度复杂和动态多变的拓扑网络,因此提出了一种面向空间信息网络的免配对无证书链上接入认证方法。首先,结合联盟链和无证书公钥密码分发技术,构建了星链通信模型。在此基础上,提出了基于区块链的免配对无证书公钥-椭圆曲线混合加密算法,设计了接入认证机制,以保障接入认证过程的安全性和操作的可追溯性。最后,通过扩展的区块结构记录接入认证清单,设计了批处理机制,实现高效切换。安全分析与仿真结果表明,所提方法与现有方法相比,在提供更强安全性保障的前提下,降低了信令开销约50%、认证时延至少约12.4%、批处理认证时延约23%。

关键词：空间信息网络区块链无证书公钥密码分发技术接入认证

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1α,25-dihydroxyvitamin D 3 inhibits transforming growth factorβ1-induced epithelial-mesenchymal transition viaβ-catenin pathway

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Chinese Medical Journal 2020年第11期133卷 1298-1303页

作者： Xin-Rong Xiong Xin-Li Tian ru-Jie huo Yan-Ting Dong Dai Liu Jing-Cui Bai Yun-Feng Qi Xin-rui Tian Shanxi medical university TaiyuanShanxi 030001China Cardiopulmonary Center The Seventh Medical Center of People's Liberation Army General HospitalBeijing 100730China Department of Respiratory and Critical Care Medicine The Second Hospital of Shanxi Medical UniversityTaiyuanShanxi 030001China Department of Respiratory Medicine Jinhua Hospital of Traditional Chinese MedicineJinhuaZhejiang 321017China

Background::The transforming growth factorβ1(TGF-β1)-induced epithelial-mesenchymal transition(EMT)has been proven associated with the pathogenesis of asthmatic airway remodeling,in which the Wnt/β-catenin pathway plays an important role,notably with regard to TGF-β*** studies have shown that 1α,25-dihydroxyvitamin D 3(1α,25(OH)2D 3)inhibits TGF-β1-induced EMT,although the underlying mechanism have not yet been fully ***::Alveolar epithelial cells were exposed to 1α,25(OH)2D 3,ICG-001,or a combination of both,followed by stimulation with TGF-β*** protein expression of E-cadherin,α-smooth muscle actin,fibronectin,andβ-catenin was analyzed by western blotting and immunofluorescence *** mRNA transcript of Snail was analyzed using RT-qPCR,and matrix metalloproteinase 9(MMP-9)activity was analyzed by gelatin *** activity of the Wnt/β-catenin signaling pathway was analyzed using the Top/Fop flash ***::Both 1α,25(OH)2D 3 and ICG-001 blocked TGF-β1-induced EMT in alveolar epithelial *** addition,the Top/Fop Flash reporters showed that 1α,25(OH)2D 3 suppressed the activity of the Wnt/β-catenin pathway and reduced the expression of target genes,including MMP-9 and Snail,in synergy with ***::1α,25(OH)2D 3 synergizes with ICG-001 and inhibits TGF-β1-induced EMT in alveolar epithelial cells by negatively regulating the Wnt/β-catenin signaling pathway.

关键词： 1α,25-Dihydroxyvitamin D3 Vitamin D β-Catenin Epithelial-mesenchymal transition Airway remodeling Asthma

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基于边缘计算的多摄像头视频协同分析方法

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通信学报 2023年第8期44卷 14-26页

作者：期治博杜磊霍如杨帆黄韬北京邮电大学网络与交换国家重点实验室北京100876 中国信息通信研究院工业互联网与物联网研究所北京100083 北京工业大学信息学部北京100124 网络通信与安全紫金山实验室江苏南京211111

为了减少智慧城市场景下多摄像头实时视频数据的处理量,提出了基于机器学习算法的边缘端视频协同分析方法。首先,针对各摄像头检测到的重要目标物体,设计了不同的关键窗口来筛选视频的感兴趣区域,缩减视频数据量并提取其特征。然后,根... 详细信息

为了减少智慧城市场景下多摄像头实时视频数据的处理量,提出了基于机器学习算法的边缘端视频协同分析方法。首先,针对各摄像头检测到的重要目标物体,设计了不同的关键窗口来筛选视频的感兴趣区域,缩减视频数据量并提取其特征。然后,根据提取的数据特征,对不同摄像头视频中的相同目标物体进行标注,并设计了摄像头之间关联程度值的计算策略,用于进一步缩减视频数据量。最后,提出了基于图卷积网络和重识别技术的GC-ReID算法,旨在实现多摄像头视频协同分析。实验结果表明,与现有的视频分析方法相比,所提方法能够有效降低系统时延和提高视频压缩率,并保证较高的准确率。

关键词：边缘计算机器学习视频协同分析感兴趣区域标注多摄像头关联性

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基于区块链的移动群智感知数据处理研究综述

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浙江大学学报（工学版） 2024年第6期58卷 1091-1106页

作者：邵子豪霍如王志浩倪东谢人超紫金山实验室江苏南京211111 北京工业大学信息学部北京100124 北京邮电大学网络与交换技术国家重点实验室北京100876

针对移动群智感知(MCS)数据处理的用户广泛参与性、采集设备灵活移动性与通信环境复杂性的特点,对基于区块链的移动群智感知数据处理进行评估.回顾移动群智感知与区块链的发展历程,总结移动群智感知数据处理面临的挑战与区块链技术的特... 详细信息

针对移动群智感知(MCS)数据处理的用户广泛参与性、采集设备灵活移动性与通信环境复杂性的特点,对基于区块链的移动群智感知数据处理进行评估.回顾移动群智感知与区块链的发展历程,总结移动群智感知数据处理面临的挑战与区块链技术的特点;设计基于区块链的移动群智感知体系结构(BMCA),实现数据去中心化管理、数据安全保障、数据质量精准评估与激励可信性增强;从隐私保护、数据质量评估、激励机制3个维度,对比分析现有的数据处理关键技术研究工作;探讨基于区块链的移动群智感知数据处理研究在资源消耗控制、数据精准分析、全周期与差异化隐私保护、融合模式应用等方面存在的问题及未来可能的发展方向.

关键词：移动群智感知区块链隐私安全保护数据质量评估激励机制

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基于深度强化学习的转发效能感知流量调度算法

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通信学报 2022年第8期43卷 30-40页

作者：沙宗轩霍如孙闯汪硕黄韬北京工业大学信息学部北京100124 网络通信与安全紫金山实验室江苏南京211111 清华大学自动化系北京100084 北京邮电大学网络与交换国家重点实验室北京100876

软件定义网络(SDN)通过将控制平面与数据平面分离,可实现灵活的流量调度,更有效地利用网络资源。但是,流表项数量、设备负载率及连接主机数量增加等因素的共同作用会导致SDN交换机的转发效能降低,进而影响端到端的数据传输时延。为了解... 详细信息

软件定义网络(SDN)通过将控制平面与数据平面分离,可实现灵活的流量调度,更有效地利用网络资源。但是,流表项数量、设备负载率及连接主机数量增加等因素的共同作用会导致SDN交换机的转发效能降低,进而影响端到端的数据传输时延。为了解决上述问题,提出了基于深度强化学习的转发效能感知流量调度算法。首先,将交换机状态信息统一到感知模型中,通过神经网络建立交换机状态信息和转发效能的映射关系。然后,结合网络状态和流量信息,通过深度强化学习产生流量调度策略。最后,通过由最短路径和负载均衡算法产生的专家样本引导模型训练,不仅使模型学习到专家样本的知识以提升性能,同时提升模型训练效率。实验结果表明,与其他算法相比,所提算法不仅使端到端的平均传输时延降低了15.31%,而且保证了网络整体的负载均衡。

关键词：软件定义网络深度强化学习流量调度转发效能感知负载均衡

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