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A Vertex Cover with Chorded 4-cycles

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Acta Mathematica Sinica,English Series 2011年第12期27卷 2351-2360页

作者： yun shu gao Guo Jun LI Jin YAN School of Mathematics and Computer Science Ningxia University Yinchuan 750021 P. R. China Department of Biochemistry and Molecular Biology University of Georgia GA 30602 U.S.A. School of Mathematics Shandong University Ji＇nan 250100 P. R. China

Let k be an integer with k ≥ 2 and G a graph with order n 〉 4k. We prove that if the minimum degree sum of any two nonadjacent vertices is at least n ＋ k, then G contains a vertex cover with exactly k components su... 详细信息

关键词： Degree condition vertex-disjoint chorded quadrilateral

IoT Empowered Early Warning of Transmission Line Galloping Based on Integrated Optical Fiber Sensing and Weather Forecast Time Series Data

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Computers, Materials & Continua 2025年第1期82卷 1171-1192页

作者： Zhe Li yun Liang Jinyu Wang Yang gao State Grid Henan Electric Power Company Electric Power Scientific Research Institute State Grid Henan Electric Power CompanyZhengzhou450052China

Iced transmission line galloping poses a significant threat to the safety and reliability of power systems,leading directly to line tripping,disconnections,and power *** early warning methods of iced transmission line galloping suffer from issues such as reliance on a single data source,neglect of irregular time series,and lack of attention-based closed-loop feedback,resulting in high rates of missed and false *** address these challenges,we propose an Internet of Things(IoT)empowered early warning method of transmission line galloping that integrates time series data from optical fiber sensing and weather ***,the method applies a primary adaptive weighted fusion to the IoT empowered optical fiber real-time sensing data and weather forecast data,followed by a secondary fusion based on a Back Propagation(BP)neural network,and uses the K-medoids algorithm for clustering the fused ***,an adaptive irregular time series perception adjustment module is introduced into the traditional Gated Recurrent Unit(GRU)network,and closed-loop feedback based on attentionmechanism is employed to update network parameters through gradient feedback of the loss function,enabling closed-loop training and time series data prediction of the GRU network ***,considering various types of prediction data and the duration of icing,an iced transmission line galloping risk coefficient is established,and warnings are categorized based on this ***,using an IoT-driven realistic dataset of iced transmission line galloping,the effectiveness of the proposed method is validated through multi-dimensional simulation scenarios.

关键词： Optical fiber sensing multi-source data fusion early warning of galloping time series data IoT adaptive weighted learning irregular time series perception closed-loop attention mechanism

基于知识图谱技术的计算机网络链路漏洞检测研究

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现代电子技术 2025年第1期48卷 97-101页

作者：辛瑞雯高云山西大学山西太原030006 山西大同大学计算机与网络工程学院山西大同037009

计算机网络链路的漏洞信息具有类型复杂、来源广及数量庞大等特点,导致此类漏洞的威胁判断尤为困难。知识图谱技术具有数据整合及统一表示特性,可以统一结构化整合呈现复杂特点的漏洞信息,为此,文中提出基于知识图谱技术的计算机网络链... 详细信息

计算机网络链路的漏洞信息具有类型复杂、来源广及数量庞大等特点,导致此类漏洞的威胁判断尤为困难。知识图谱技术具有数据整合及统一表示特性,可以统一结构化整合呈现复杂特点的漏洞信息,为此,文中提出基于知识图谱技术的计算机网络链路漏洞检测方法。收集计算机网络链路的各种数据源漏洞信息,抽取其中的漏洞实体知识与关系知识,构建网络链路漏洞知识图谱。运用卷积神经网络模型学习该知识图谱中的漏洞知识,通过训练后的模型实现网络链路漏洞检测。结果显示,该方法可针对包含不同类型、数量链路漏洞的工况,实现漏洞知识图谱的构建,并且漏洞威胁检测精度始终保持在90%以上。因此,说明所研究检测方法的检测结果精准可靠,可为计算机网络链路数据安全传输提供保障。

关键词：知识图谱计算机网络链路漏洞漏洞实体知识关系知识知识抽取网络安全

基于CAN总线网络技术的分布式全自动可控顶控制系统

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减速顶与调速技术 2011年第2期 1-7页

作者：高树允高红荣李莉哈尔滨铁路站场调速技术研究所有限公司黑龙江哈尔滨150006 兰州铁路局运输处甘肃兰州730000

基于CAN总线网络技术的分布式全自动驼峰可控顶控制系统,是驼峰自动化的发展方向。本文主要介绍了分布式控制系统设计的软件、硬件要点,及控制对象和设计依据。

关键词：分布式控制系统神经元可控减速顶 CAN总线

The Crystallization and Melting Behaviors of PDLA-b-PBS-b-PDLA Tri-block Copolymers

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Chinese Journal of Polymer Science 2020年第3期38卷 298-310,I0008页

作者： Cong-shu Feng yun Chen Jun Shao gao Li Hao-Qing Hou College of chemistry and chemical engineering Jiangxi Normal UniversityNanchang 330022China Jiangxi Key Laboratory of Organic Chemistry Jiangxi Science and Technology Normal UniversityNanchang 330013China Key Laboratory of Polymer Ecomaterials Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China

In this study,the poly(D-lactide)-block-poly(butylene succinate)-block-poly(D-lactide)(PDLA-b-PBS-b-PDLA)triblock copolymers with a fixed length of PBS and various lengths of PDLA are synthesized,and the crystallization behaviors of the PDLA and PBS blocks are *** both the crystallization behaviors of PBS and PDLA blocks depend on composition,they exhibit different *** the PDLA block,its crystallization behaviors are mainly influenced by temperature and block *** crystallization signals of PDLA block appear in the B-D 2-2 specimen,and these signals get enhanced with PDLA block *** crystallization rates tend to decrease with increasing PDLA block lendth during crystallizing at 90 and 100°*** at higher temperature,the crystallization rates increase at first and then decrease with block *** crystallization rates decrease as elevating the crystallization *** melting temperatures of PDLA blocks increase with block lengths and crystallization *** the PBS block,its crystallization behaviors are mainly controlled by the nucleation and confinement from PDLA *** crystallization and melting enthalpies as well as the crystallization and melting temperatures of PBS block reduce as a longer PDLA block has been copolymerized,while the crystallization rates of the PBS block exhibit unique component dependence,and the highest rate is observed in the B-D 2-2 *** Avrami exponent of PBS crystallites is reduced as a longer PDLA block is incorporated or the sample is crystallized at higher *** investigation provides a convenient route to tune the crystallization behavior of PBS and PLA.

关键词： Poly(butylenes succinate)(PBS) Poly(D-lactide)(PDLA) Poly(D-lactide)-block-PBS-block-poly(D-lactide)(PDLA-b-PBS-b-PDLA) Crystallization behavior

Mechanisms of ductular reaction in non-alcoholic steatohepatitis

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World Journal of Gastroenterology 2022年第19期28卷 2088-2099页

作者： Yue Chen Wen-Kang gao Yan-yun shu Jin Ye Division of Gastroenterology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022Hubei ProvinceChina

Non-alcoholic fatty liver disease(NAFLD)is a disease spectrum caused in part by insulin resistance and genetic *** disease is primarily characterized by excessive lipid accumulation in hepatocytes in the absence of alcohol abuse and other causes of liver ***,NAFLD is divided into several periods:simple steatosis,non-alcoholic steatohepatitis(NASH),hepatic fibrosis,cirrhosis,and hepatocellular *** the increasing prevalence of obesity and hyperlipidemia,NAFLD has become the main cause of chronic liver disease *** a result,the pathogenesis of this disease is drawing increasing *** reaction(DR)is a reactive bile duct hyperplasia caused by liver injury that involves hepatocytes,cholangiocytes,and hepatic progenitor ***,DR is shown to play a pivotal role in simple steatosis progression to NASH or liver fibrosis,providing new research and treatment *** study reviews several DR signaling pathways,including Notch,Hippo/YAP-TAZ,Wnt/β-catenin,Hedgehog,HGF/c-Met,and TWEAK/Fn14,and their role in the occurrence and development of NASH.

关键词： Non-alcoholic fatty liver disease Non-alcoholic steatohepatitis Ductular reaction Mechanisms Signaling pathways

A 30-year overview of sodium-ion batteries

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Carbon Energy 2024年第6期6卷 56-98页

作者： yun gao Hang Zhang Jian Peng Lin Li Yao Xiao Li Li Yang Liu yun Qiao shu-Lei Chou School of Environmental and Chemical Engineering Shanghai UniversityShanghaiChina College of Chemistry and Materials Engineering Wenzhou UniversityWenzhouZhejiangChina Institute for Superconducting and Electronic Materials University of WollongongWollongongNew South WalesAustralia

Sodium-ion batteries(NIBs)have emerged as a promising alternative to commercial lithium-ion batteries(LIBs)due to the similar properties of the Li and Na elements as well as the abundance and accessibility of Na *** of the current research has been focused on the half-cell system(using Na metal as the counter electrode)to evaluate the performance of the cathode/anode/*** relationship between the performance achieved in half cells and that obtained in full cells,however,has been neglected in much of this ***,the trade-off in the relationship between electrochemical performance and cost needs to be given more ***,systematic and comprehensive insights into the research status and key issues for the full-cell system need to be gained to advance its ***,this review evaluates the recent progress based on various cathodes and highlights the most significant challenges for full *** strategies have also been proposed to enhance the electrochemical performance of NIBs,including designing electrode materials,optimizing electrolytes,sodium compensation,and so ***,perspectives and outlooks are provided to guide future research on sodium-ion full cells.

关键词： commercial application electrode electrolyte sodium-ion full cell strategies

Advances in Phytochemistry and Modern Pharmacology of Saposhnikovia Divaricata(Turcz.)Schischk

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Chinese Journal of Integrative Medicine 2023年第11期29卷 1033-1044页

作者： gao Jun-wen ZHAN Yang WANG yun-he ZHAO shu-jie HAN Zhong-ming College of Resources and Environment Jilin Agricultural UniversityChangchun(130118)China Information Center Jilin Agricultural UniversityChangchun(130118)China College of Chinese Medicinal Materials Jilin Agricultural UniversityChangchun(130118)China

Saposhnikovia divaricata(Turcz.)Schischk(***,Fangfeng)is a herb in the Apiaceae family,and its root has been used since the Western Han Dynasty(202 B.C.).Chromones and coumarins are the pharmacologically active substances in *** phytochemical and pharmacological studies have demonstrated their antipyretic,analgesic,anti-inflammatory,antioxidant,anti-tumor,and anticoagulant *** and analytical strategy theory advancements have yielded novel results;however,most investigations have been limited to the main active substances—chromones and ***,we reviewed studies related to the chemical composition and pharmacological activity of ***,analyzed the developing trends and challenges,and proposed that research should focus on components’synergistic *** also suggested that,the structure-effect relationship should be prioritized in advanced research.

关键词： coumarin synergistic priori

Parameter calibration of the tensile-shear interactive damage constitutive model for sandstone failure

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第4期16卷 1153-1174页

作者： yun shu Zheming Zhu Meng Wang Weiting gao Fei Wang Duanying Wan yuntao Wang MOE Key Laboratory of Deep Earth Science and Engineering College of Architecture and EnvironmentSichuan UniversityChengdu610065China Failure Mechanics and Engineering Disaster Prevention Key Laboratory of Sichuan ProvinceSichuan UniversityChengdu610065China Tianfu Engineering-oriented Numerical Simulation & Software Innovation Center Chengdu620107China

The tensile-shear interactive damage(TSID)model is a novel and powerful constitutive model for rock-like *** study proposes a methodology to calibrate the TSID model parameters to simulate *** basic parameters of sandstone are determined through a series of static and dynamic tests,including uniaxial compression,Brazilian disc,triaxial compression under varying confining pressures,hydrostatic compression,and dynamic compression and tensile tests with a split Hopkinson pressure *** on the sandstone test results from this study and previous research,a step-by-step procedure for parameter calibration is outlined,which accounts for the categories of the strength surface,equation of state(EOS),strain rate effect,and *** calibrated parameters are verified through numerical tests that correspond to the experimental loading *** between numerical results and experimental data indicates the precision and reliability of the calibrated *** methodology presented in this study is scientifically sound,straightforward,and essential for improving the TSID ***,it has the potential to contribute to other rock constitutive models,particularly new user-defined models.

关键词： Damage constitutive model Parameter calibration Rock modeling Sandstone Dynamic impact load Tensile-shear interactive damage(TSID)model