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Controllability of General Linear Discrete Multi-Agent Systems with Directed and Weighted Signed Network

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Journal of Systems Science & Complexity 2022年第6期35卷 2107-2130页

作者： ZHAO Lanhao JI Zhijian LIU yungang LIN Chong Institute of Complexity Science College of AutomationQingdao UniversityQingdao 266071China Shandong Key Laboratory of Industrial Control Technology Qingdao UniversityQingdao 266071China School of Control Science and Engineering Shandong UniversityJinan 250061China Institute of Complecity Science College of AutomationQingdao UniversityQingdao 266071China

This paper investigates the controllability of general linear discrete-time multi-agent systems with directed and weighted signed networks by using graphic and algebraic methods.The nondelay and delay cases are considered respectively.For the case of no time delay,the upper bound condition of the controllable subspace is given by using the equitable partition method,and the influence of coefficient matrix selection of individual dynamics is illustrated.For the case of single delay and multiple delays,the equitable partition method is extended to deal with time-delay systems,and some conclusions are obtained.In particular,some simplified algebraic criteria for controllability of systems with time delay are obtained by using augmented system method and traditional algebraic controllability criteria.

关键词： Controllability equitable partition multi-agent system signed network time-delays

Strong Structural Controllability Based on Leader-Follower Framework

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系统科学与复杂性学报:英文版 2023年第4期36卷 1498-1518页

作者： QI Wei JI Zhijian LIU yungang LIN Chong Insitute of Complexity Science College of AutomationQingdao UniversityQingdao 266071China Shandong Key Laboratory of Industrial Control Technology Qingdao UniversityQingdao 266071China School of Control Science and Engineering Shandong UniversityJinan 250061China

In this paper,the strong structural controllability of the leader-follower framework is discussed.Firstly,the authors analyze different edge augmentation methods to preserve the strong structural controllability of the path-bud topology.The following four cases are considered:Adding edges from the path to the bud;adding edges from the bud to the path;adding the reverse or forward edges to the path or bud;and adding both the reverse and forward edges to the path or bud.Then sufficient conditions are derived for the strong structural controllability of the new topologies which are generated by adding different edges.In addition,it is proved that rank[A B]=n is a necessary condition for the strong structural controllability.Finally,three examples are given to verify the effectiveness of the main results.

关键词： Edge augmentation leader-follower framework path-bud topology strong structural controllability

无线传感器网络中蜜罐捕获及反馈机制的蠕虫传播模型

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江苏师范大学学报（自然科学版） 2024年第2期42卷 60-64页

作者：钱云港任建国江苏师范大学计算机科学与技术学院江苏徐州221116

网络蠕虫依靠快速传播以及自我复制的能力在网络中大肆传播,对网络产生了一定的威胁.首先,在经典SIR模型中考虑节点免疫后的再感染问题,并引入受损节点(蠕虫传播在无线传感器网络下扫描到但未被感染的节点),引入受损节点后的模型(SDIRS... 详细信息

网络蠕虫依靠快速传播以及自我复制的能力在网络中大肆传播,对网络产生了一定的威胁.首先,在经典SIR模型中考虑节点免疫后的再感染问题,并引入受损节点(蠕虫传播在无线传感器网络下扫描到但未被感染的节点),引入受损节点后的模型(SDIRS模型)利用网络节点的特点有效遏制蠕虫初期的传播.然后,提出了P-SDIRS模型,将蜜罐的捕获机制进一步结合在SDIRS模型的基础上.在P-SDIRS模型中,得到了基本再生数、平衡点以及稳定性,并通过数值模拟验证模型的有效性.

关键词：无线传感器网络蜜罐网络蠕虫病毒传播

dbDEMC 3.0:Functional Exploration of Differentially Expressed miRNAs in Cancers of Human and Model Organisms

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Genomics, Proteomics & Bioinformatics 2022年第3期20卷 446-454页

作者： Feng Xu Yifan wang Yunchao Ling Chenfen Zhou Haizhou wang Andrew E.Teschendorff Yi Zhao Haitao Zhao yungang He Guoqing Zhang Zhen Yang Center for Medical Research and Innovation of Pudong Hospital Fudan University Pudong Medical CenterShanghai 201399China Institutes of Biomedical Science Shanghai Key Laboratory of Medical EpigeneticsInternational Co-laboratory of Medical Epigenetics and Metabolism(Ministry of Science and Technology)Fudan UniversityShanghai 200032China Bio-Med Big Data Center CAS Key Laboratory of Computational BiologyShanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200031China CAS Key Laboratory of Computational Biology Shanghai Institute of Nutrition and HealthUniversity of Chinese Academy of SciencesChinese Academy of SciencesShanghai 200031China Institute of Computing Technology Chinese Academy of SciencesBeijing 100190China Department of Liver Surgery Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100730China Shanghai Fifth People’s Hospital Fudan UniversityShanghai 200240China

MicroRNAs(miRNAs)are important regulators in gene expression.The dysregulation of miRNA expression is widely reported in the transformation from physiological to pathological states of cells.A large number of differentially expressed miRNAs(DEMs)have been identified in various human cancers by using high-throughput technologies,such as microarray and miRNAseq.Through mining of published studies with high-throughput experiment information,the database of DEMs in human cancers(dbDEMC)was constructed with the aim of providing a systematic resource for the storage and query of the DEMs.Here we report an update of the dbDEMC to version 3.0,which contains two-fold more data entries than the second version and now includes also data from mice and rats.The dbDEMC 3.0 contains 3268 unique DEMs in 40 different cancer types.The current datasets for differential expression analysis have expanded to 9 generalized categories.Moreover,the current release integrates functional annotations of DEMs obtained by using experimentally validated targets.The annotations can be of great benefit to the intensive analysis of the roles of DEMs in cancer.In summary,dbDEMC 3.0 provides a valuable resource for characterizing molecular functions and regulatory mechanisms of DEMs in human cancers.The dbDEMC 3.0 is freely accessible at https://***/dbDEMC.

关键词： MicroRNA Cancer Differential expression Model organism Database

基于Mohr-Coulomb强度准则的锚杆支护效应研究

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路基工程 2024年第3期 47-53页

作者：王怀健崔乃育金宇轩石云冈谭鑫中交建筑集团有限公司北京100088 湖南省交通科学研究院有限公司长沙410005 湖南大学土木工程学院长沙410082

从围岩与锚杆相互作用的力学特性出发,基于围岩增强理论,采用数值模拟手段,探究锚杆支护作用下隧道开挖后围岩的力学特性,得到围岩特性曲线(GRC曲线)。通过对比各种锚杆支护参数下与未支护状态下围岩特性曲线的差异,建立锚杆密度与围岩... 详细信息

从围岩与锚杆相互作用的力学特性出发,基于围岩增强理论,采用数值模拟手段,探究锚杆支护作用下隧道开挖后围岩的力学特性,得到围岩特性曲线(GRC曲线)。通过对比各种锚杆支护参数下与未支护状态下围岩特性曲线的差异,建立锚杆密度与围岩收敛降低比例之间的关系。结果表明:锚杆对围岩收敛的限制作用显著,能很好地控制围岩变形,且锚杆密度越大,支护效果越明显,但当锚杆密度大于3时,收敛限制效果开始减弱;锚杆对围岩收敛的约束作用存在极限值,锚杆密度与收敛减低比例之间满足二次函数关系,Ⅳ级围岩限制比例极限为40.9%,Ⅴ级围岩限制比例极限为33.8%;锚杆支护对围岩收敛的约束作用与围岩性质有关,Ⅳ级围岩的约束效果显著优于Ⅴ级围岩。

关键词：隧道锚杆围岩特性收敛-约束法支护效应锚杆密度数值模拟

机车电气线路保护装置便携式检测仪研制及应用

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模具制造 2024年第3期24卷 209-211,214页

作者：王晶闫克磊安猛王玉飞孙云刚中国铁路北京局集团有限公司怀柔北机务段北京101408 北京鸿立瑞通轨道科技有限公司北京100036 中国铁路北京局集团有限公司北京科学技术研究所北京100070

针对机车电气线路保护装置采用的配件下车、试验台检测的传统检测方式,研制的便携式检测仪可实现对保护装置的不下车检测,大幅提升检测作业效率,并通过数据积累可实现对保护装置产品质量追踪及劣化原因分析。

关键词：机车线路保护装置不下车检测

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浅埋暗挖顶管施工孤石处置技术的研究

山西建筑 2024年第6期50卷 155-158页

作者：徐方林周运刚姜伟青岛地铁集团有限公司山东青岛266100 上海同是科技股份有限公司上海201203

结合青岛地铁建设工程实例,分析了顶管掘进中遇孤石的施工风险,讨论过街通道顶管施工孤石处理的技术研究,主要介绍了在施工过程中遇到孤石时,所采取的相应方法以及在施工过程中主要技术,为类似孤石的处置提供经验参考。因此在顶管施工... 详细信息

结合青岛地铁建设工程实例,分析了顶管掘进中遇孤石的施工风险,讨论过街通道顶管施工孤石处理的技术研究,主要介绍了在施工过程中遇到孤石时,所采取的相应方法以及在施工过程中主要技术,为类似孤石的处置提供经验参考。因此在顶管施工过程中遇较大孤石情况,首先应探清孤石的大小、形状以及分布情况,制定最合理的处理方法,编制专项处置方案,地面有条件的应进行地面预处理,不具备条件的再采取洞内处理,或地表及洞内联合处置,采用旋挖钻、地质钻钻孔、静态预裂等方式破碎孤石、取出,顺利恢复顶管掘进施工。

关键词：地铁建设过街通道顶管施工孤石处置

Compensation of uncertain linear actuator dynamics for a class of cascaded PDE-ODE systems

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Science China(Information Sciences) 2023年第1期66卷 332-333页

作者： Jian LI yungang LIU School of Mathematics and Information Sciences Yantai University School of Control Science and Engineering Shandong University

Dear editor,Boundary control of the distributed parameter systems(DPSs) described by partial differential equations(PDEs) or cascaded PDE-ODEs(ordinary differential equations) has received considerable attention over the last two decades(see [1–4] and the references therein). But most studies just consider the actuation of PDE boundary conditions, regardless of the actuator dynamics.

关键词： Closed loop systems

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基于旁孔透射法的隧道锚杆长度检测方法

山西建筑 2024年第7期50卷 141-144页

作者：徐方林周运刚姜伟青岛地铁集团有限公司山东青岛266100 上海同是科技股份有限公司上海201203

锚杆的锚固长度是隧道围岩支护过程中重要指标,由于锚杆的检测长度长期受到现场施工环境的限制,传统检测方法往往会对锚杆锚固产生损伤,借鉴旁孔投射法原理,利用激振波接收处理器、激振锤、首波接收器、水听器装置组成锚杆检测仪器,通... 详细信息

锚杆的锚固长度是隧道围岩支护过程中重要指标,由于锚杆的检测长度长期受到现场施工环境的限制,传统检测方法往往会对锚杆锚固产生损伤,借鉴旁孔投射法原理,利用激振波接收处理器、激振锤、首波接收器、水听器装置组成锚杆检测仪器,通过波传导时间差来计算锚杆的长度,从而对锚杆锚固长度进行检测,并利用数值模拟软件ABAQUS进行数值仿真分析,验证旁孔投射法原理检测锚杆锚固长度的可行性。

关键词：锚固长度锚杆检测旁孔投射法数值仿真