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The Lightweight Edge-Side Fault Diagnosis Approach Based on Spiking Neural Network

Computers, Materials & Continua 2024年第6期79卷 4883-4904页

作者： Jingting Mei Yang Yang Zhipeng Gao Lanlan Rui yijing lin State Key Laboratory of Networking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing100876China

Network fault diagnosis methods play a vital role in maintaining network service quality and enhancing user experience as an integral component of intelligent network *** the unique characteristics of edge networks,such as limited resources,complex network faults,and the need for high real-time performance,enhancing and optimizing existing network fault diagnosis methods is ***,this paper proposes the lightweight edge-side fault diagnosis approach based on a spiking neural network(LSNN).Firstly,we use the Izhikevich neurons model to replace the Leaky Integrate and Fire(LIF)neurons model in the LSNN *** neurons inherit the simplicity of LIF neurons but also possess richer behavioral characteristics and flexibility to handle diverse data *** by Fast Spiking Interneurons(FSIs)with a high-frequency firing pattern,we use the parameters of ***,inspired by the connection mode based on spiking dynamics in the basal ganglia(BG)area of the brain,we propose the pruning approach based on the FSIs of the BG in LSNN to improve computational efficiency and reduce the demand for computing resources and energy ***,we propose a multiple iterative Dynamic Spike Timing Dependent Plasticity(DSTDP)algorithm to enhance the accuracy of the LSNN *** on two server fault datasets demonstrate significant precision,recall,and F1 improvements across three diagnosis ***,lightweight indicators such as Params and FLOPs significantly reduced,showcasing the LSNN’s advanced performance and model *** conclude,experiment results on a pair of datasets indicate that the LSNN model surpasses traditional models and achieves cutting-edge outcomes in network fault diagnosis tasks.

关键词： Network fault diagnosis edge networks Izhikevich neurons pruning dynamic spike timing dependent plasticity learning

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价值驱动的以太坊交易追踪排名方法

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应用科学学报 2024年第4期42卷 629-641页

作者：雷鸣林怡静高志鹏北京邮电大学网络与交换技术国家重点实验室北京100876

区块链技术的匿名性与价值传递特性可能被恶意攻击者利用以实施网络钓鱼或其他欺诈行为。虽然链上数据公开、透明、可追溯,但是攻击者仍可通过设计复杂的交易链路,使资产在众多账户之间进行流转。最终,这些资产可能会被集中至某交易所... 详细信息

区块链技术的匿名性与价值传递特性可能被恶意攻击者利用以实施网络钓鱼或其他欺诈行为。虽然链上数据公开、透明、可追溯,但是攻击者仍可通过设计复杂的交易链路,使资产在众多账户之间进行流转。最终,这些资产可能会被集中至某交易所账户并被提取,从而实现非法的利益获取。针对上述问题,面向以太坊提出一种价值驱动的交易追踪排名方法。首先收集12起诈骗金额超过百万美元的以太坊攻击案例,获取大小为27 GB的交易数据,构建地址图;然后从链上抽取代币的流动池数据,计算代币历史价格,确定地址图中各交易的权重系数;最后提出基于价值占比的动态残差放缩机制,优化地址图结构,更加偏向主要的价值流通路径。实验结果表明,召回率可达89.24%,相较于交易追踪排名(transaction tracing rank,TTR)、APPR和Haircut算法分别提高了7%、20%和37%,验证了本文方法在检测欺诈账户上的高效性和准确性。

关键词：区块链交易追踪 PageRank 代币价值欺诈账户

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Two-Stage Edge-Side Fault Diagnosis Method Based on Double Knowledge Distillation

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Computers, Materials & Continua 2023年第9期76卷 3623-3651页

作者： Yang Yang Yuhan Long yijing lin Zhipeng Gao Lanlan Rui Peng Yu State Key Laboratory ofNetworking and Switching Technology Beijing University of Posts and TelecommunicationsBeijing100876China School of Computer Science and Engineering Nanyang Technological University639798Singapore Science and Technology on Communication Networks Laboratory The 54th Research Institute of China Electronics Technology Group CorporationShijiazhuang050051China

With the rapid development of the Internet of Things(IoT),the automation of edge-side equipment has emerged as a significant *** existing fault diagnosismethods have the characteristics of heavy computing and storage load,and most of them have computational redundancy,which is not suitable for deployment on edge devices with limited resources and *** paper proposes a novel two-stage edge-side fault diagnosis method based on double knowledge ***,we offer a clustering-based self-knowledge distillation approach(Cluster KD),which takes the mean value of the sample diagnosis results,clusters them,and takes the clustering results as the terms of the loss *** utilizes the correlations between faults of the same type to improve the accuracy of the teacher model,especially for fault categories with high ***,the double knowledge distillation framework uses ordinary knowledge distillation to build a lightweightmodel for edge-side *** propose a two-stage edge-side fault diagnosismethod(TSM)that separates fault detection and fault diagnosis into different stages:in the first stage,a fault detection model based on a denoising auto-encoder(DAE)is adopted to achieve fast fault responses;in the second stage,a diverse convolutionmodel with variance weighting(DCMVW)is used to diagnose faults in detail,extracting features frommicro andmacro *** comparison experiments conducted on two fault datasets,it is proven that the proposed method has high accuracy,low delays,and small computation,which is suitable for intelligent edge-side fault *** addition,experiments show that our approach has a smooth training process and good balance.

关键词： Fault diagnosis knowledge distillation edge-side lightweight model high similarity

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Virtual Power Plants for Grid Resilience: A Concise Overview of Research and Applications

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IEEE/CAA Journal of Automatica Sinica 2024年第2期11卷 329-343页

作者： yijing Xie Yichen Zhang Wei-Jen Lee Zongli lin Yacov A.Shamash IEEE Department of Electrical Engineering University of Texas at ArlingtonArlingtonTX 76019 USA Charles L.Brown Department of Electrical and Computer Engineering University of VirginiaCharlottesvilleVA 22904 USA Department of Electrical and Computer Engineering Stony Brook UniversityStony BrookNY 11794 USA

The power grid is undergoing a transformation from synchronous generators(SGs) toward inverter-based resources(IBRs). The stochasticity, asynchronicity, and limited-inertia characteristics of IBRs bring about challenges to grid resilience. Virtual power plants(VPPs) are emerging technologies to improve the grid resilience and advance the transformation. By judiciously aggregating geographically distributed energy resources(DERs) as individual electrical entities, VPPs can provide capacity and ancillary services to grid operations and participate in electricity wholesale markets. This paper aims to provide a concise overview of the concept and development of VPPs and the latest progresses in VPP operation, with the focus on VPP scheduling and control. Based on this overview, we identify a few potential challenges in VPP operation and discuss the opportunities of integrating the multi-agent system(MAS)-based strategy into the VPP operation to enhance its scalability, performance and resilience.

关键词： Climate change renewable energy resources resilience smart grids virtual power plants(VPPs)

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Predesigned covalent organic framework with sulfur coordination: Anchoring Au nanoparticles for sensitive colorimetric detection of Hg(Ⅱ)

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Chinese Chemical Letters 2024年第5期35卷 392-396页

作者： Guorong Li yijing Wu Chao Zhong Yixin Yang Zian lin Ministry of Education Key Laboratory of Analytical Science for Food Safety and Biology Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food SafetyCollege of ChemistryFuzhou UniversityFuzhou 350108China

Targeted construction of new covalent organic frameworks(COFs)with specific purposes and rationalities to build colorimetric assay platform for environmental pollutant monitoring have attracted increasing ***,it is still challenging due to lack of available coordination sites inside COFs pores and only a slight bonding ability for anchoring *** this work,a two-dimensional(2D)COFs(termed as Tz-COF)with high crystallinity,excellent chemical stability,and abundant sulfur coordination in its skeletons was synthesized and used for the confined growth of Au *** was found that the Au NPs showed significant dispersibility for the support of *** proposed Tz-COF@Au NPs possessed outstanding Hg^(2+)-activated peroxidase-like activity benefited from physicochemical properties of gold amalgam and synergistic effect between COFs and Au NPs to oxidize chromogenic *** on highly efficient activity and distinctive color evolution,the strategy for detecting Hg^(2+)was developed and successfully applied to determine the content of Hg^(2+)in real environmental *** work manifests that a potential strategy to establish a colorimetric assay platform for environmental pollutant monitoring based on the targeted manufacturing of novel COFs with specific functions.

关键词： Covalent organic frameworks Thiazole Sulfur coordination Au nanoparticles Hg^(2+)-activated peroxidase-like activity

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Extrusion-base d 3D-printe d“rolle d-up”composite scaffolds with hierarchical pore structure for bone growth and repair

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Journal of Materials Science & Technology 2024年第4期171卷 222-234页

作者： Yufan Li Li Chen yijing Stehle Mingyue lin Chenxin Wang Rui Zhang Min Huang Yubao Li Qin Zou Research Center for Nano Biomaterials Analytical&Testing CenterSichuan UniversityChengdu 610064China Analytical&Testing Center Sichuan UniversityChengdu 610064China Department of mechanical engineering Union College807 Union St.SchenectadyNY 12308USA Sichuan Institute of Atomic Energy Chengdu 610101China

Three-dimensional(3D)bioprinting,specifically direct ink writing(DIW)capable of printing biologically active substances such as growth factors or drugs under low-temperature conditions,is an emerging di-rection in bone tissue ***,limited by the bio-ink mobility and the poor resolution of this printing technology,the lateral pores of current crisscross-stacked scaffolds printed through DIW tend to clog and are inimical to bone ***,it is critical to develop DIW printed biologi-cal scaffold structure with high mechanical strength,porosity,and biocompatibility ***,patterned polylactic acid(PLA)/polycaprolactone(PCL)/nano-hydroxyapatite(n-HA)based scaffold was printed through DIW technological and rolled-up for properties characterization,cytocompatibility test,and bone repair *** result not only shows that the hexagonal patterned scaffolds are me-chanically strong with porosity,but also demonstrated that the hierarchical pore structure formed during rolled-up has the potential to address the clogging problem and stimulates bone growth and repair.

关键词： Direct ink writing(DIW) Bone repair scaffold,Micro-CT Bio composites

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Community Incidence Estimates of Five Pathogens Based on Foodborne Diseases Active Surveillance—China,2023

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China CDC weekly 2024年第24期6卷 574-579,I0002页

作者： Penghui Fan Haihong Han Jikai Liu Xiaochen Ma Ronghua Zhang Hong Liu yijing Zhou Zunhua Chu Jian Wen Li lin Weiwei Li Yunchang Guo NHC Key Laboratory of Food Safety Risk Assessment China National Center for Food Safety Risk AssessmentBeijingChina Beijing Center for Disease Prevention and Control BeijingChina Zhejiang Provincial Center for Disease Control and Prevention Hangzhou CityZhejiang ProvinceChina Shanghai Center for Disease Control and Prevention ShanghaiChina Jiangsu Provincial Center for Disease Control and Prevention Nanjing CityJiangsu ProvinceChina Shandong Province Center for Disease Control and Prevention Jinan CityShandong ProvinceChina Guangdong Province Center for Disease Control and Prevention Guangzhou CityGuangdong ProvinceChina Sichuan Province Center for Disease Control and Prevention Chengdu CitySichuan ProvinceChina

Summary What is already known about this topic?Foodborne diseases,representing significant food safety and public health challenges globally,are not welldocumented in terms of incidence,particularly for cases characterized by acute gastroenteritis(AGI)in *** is added by this report?This study developed a pyramid model to estimate the incidence of five pathogens,stratified by gender and age.

关键词： acute diseases stratified

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2005年—2016年南极冰盖物质平衡精细评估

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遥感学报 2023年第2期27卷 318-334页

作者：林依静于志同刘岩程晓沈强赵励耘北京师范大学全球变化与地球系统研究院遥感科学国家重点实验室北京100875 中国空间技术研究院钱学森空间技术实验室北京100094 南方海洋科学与工程广东省实验室(珠海) 珠海519082 中国高校极地联合研究中心北京100875 全球变化与可持续发展协同创新中心北京100875 中山大学测绘科学与技术学院珠海519082 中国科学院测量与地球物理研究所大地测量与地球动力学国家重点实验室武汉430077

在全球变暖背景下,精细评估南极冰盖物质平衡可以深入探索南极冰盖变化对海平面上升的影响。基于最新的多源遥感冰盖产品,本文改进了通量法(IOM)在触地线处冰通量的评估方法,并逐年逐流域评估了2005年—2016年南极冰盖物质平衡及变化,... 详细信息

在全球变暖背景下,精细评估南极冰盖物质平衡可以深入探索南极冰盖变化对海平面上升的影响。基于最新的多源遥感冰盖产品,本文改进了通量法(IOM)在触地线处冰通量的评估方法,并逐年逐流域评估了2005年—2016年南极冰盖物质平衡及变化,探讨了其变化的动力学和气候学原因。本文实现了触地线处冰通量的精细评估,与国际同期结果比较此方法结果更合理;同时,对比结果显示细微的数据差异和方法差异会造成IOM法物质平衡估算结果的明显差异。2005年—2016年期间,南极年冰盖物质平衡基本处于物质流失状态,年均物质损耗量为109.1±34.9 Gt/a,年际间波动为±84.1 Gt/a。南极冰盖物质损耗由西南极主导,占总物质损耗量的65.1%;东南极整体处于正平衡状态,但威尔克斯地流域存在明显的物质损耗;南极半岛地区在零平衡状态下波动;岛屿冰通量首次被单独评估,处于负物质平衡状态。冰盖物质平衡变化从整体来看是由表面物质平衡主导的,受年际变化的气候学因素影响;从小尺度范围来看,冰架变薄、冰川崩解导致的触地线处冰通量的动力学变化影响了部分物质损耗严重区域的物质平衡变化,使其在崩解事件发生的年份流失的冰物质量增加。

关键词：南极冰盖物质平衡通量法表面物质平衡冰通量

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基于新课标的初中音乐学科单元作业设计探究

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基础教育研究 2023年第5期 74-77页

作者：林益婧福建仙游县教师进修学校仙游351200

将高质量的单元作业与单元教学结合,能够实现加强学生艺术体验、增强学生学习兴趣、切实提升音乐课程教学质量的目的。基于新课标,教师可以通过以下三个环节设计高质量的单元作业:紧贴单元教学目标,确定单元作业目标;凸显音乐学科特性,... 详细信息

将高质量的单元作业与单元教学结合,能够实现加强学生艺术体验、增强学生学习兴趣、切实提升音乐课程教学质量的目的。基于新课标,教师可以通过以下三个环节设计高质量的单元作业:紧贴单元教学目标,确定单元作业目标;凸显音乐学科特性,设计单元作业内容;优化单元作业设计,注重单元作业评价。

关键词：初中音乐单元作业设计课程标准

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超声骨刀应用于腰椎管狭窄症后路腰椎椎间融合术中对腰椎管狭窄症患者疼痛程度及ODI的影响

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中国医药指南 2020年第30期18卷 37-38页

作者：林艺靖厦门医学院附属第二医院福建厦门361021

目的研究在对腰椎管狭窄症患者行腰椎管狭窄症后路腰椎椎间融合术过程中应用超声骨刀辅助治疗对患者的疼痛程度及功能障碍指数(ODI)的影响。方法选择2016年9月至2019年1月我院收入治疗的腰椎狭窄症患者78例,对其资料进行回顾性分析,按... 详细信息

目的研究在对腰椎管狭窄症患者行腰椎管狭窄症后路腰椎椎间融合术过程中应用超声骨刀辅助治疗对患者的疼痛程度及功能障碍指数(ODI)的影响。方法选择2016年9月至2019年1月我院收入治疗的腰椎狭窄症患者78例,对其资料进行回顾性分析,按照术中使用骨刀的不同将其分为超声组(38例,在术中行超声骨刀对其腰椎椎板显露神经根、硬膜囊切除)与普通组(40例,在术中行普通骨刀等传统医疗器械)。对比分析患者术后1周、12周及24周时的疼痛程度(采用VAS法评价)变化及24周时的ODI评分。结果两组患者术前ODI及VAS指标均无明显差异(P>0.05);术后1周,两组患者VAS指标对比无明显差异(P>0.05);术后12周及24周,超声组患者VAS指标明显低于普通组,且两组患者评分每一时间点较上一时间点均有明显变化,差异均具有统计学意义(P<0.05);术后24周,超声组患者ODI明显低于普通组,且两组患者术后评分较术前均有明显变化,差异均具有统计学意义(P<0.05)。结论对腰椎管狭窄症患者行腰椎管狭窄症后路腰椎椎间融合术,术中行超声骨刀相较于普通骨刀,对患者的预后作用更佳,具有可行性。

关键词：腰椎管狭窄症后路腰椎椎间融合术超声骨刀疼痛程度 ODI

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