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Journal of Systems Engineering and Electronics 2019年第3期30卷 587-600页

作者： XU Xingguang WEI Zhenyan REN Zhang li shusheng School of Automation Science and Electrical Engineering Beihang University Beijing 100191 China Beijing Institute of Mechanical and Electrical Engineering Beijing 100074 China Beijing Aerospace Technology Institute Beijing 100074 China

This paper studies time-varying fault-tolerant formation tracking problems for the multiple cruise missile system under directed topologies subjected to actuator failures. Firstly, the timevarying fault-tolerant formation tracking process for the multiple cruise missile system is divided into the guidance loop and the control loop. Then protocols are constructed to accomplish distributed fault-tolerant formation tracking in the guidance loop with the adaptive updating mechanism, in the condition where neither the knowledge about actuator malfunctions nor any global information of the communication topology remains available. Moreover, sufficient conditions to accomplish formation tracking are presented, and it is shown that the multiple cruise missile system can carry on the predefined time-varying fault-tolerant control (FTC) formation tracking through the active disturbances rejection controller (ADRC) and the proportion integration (PI) controller by the way of the fault-tolerant protocol utilizing the designed strategies, in the event of actuator failures. At last, numerical analysis and simulation are designed to verify the theoretical results.

关键词： fault-tolerant formation tracking consensus-based cruise missile active disturbances rejection controller (ADRC)

Fluorescence Behavior and Emission Mechanisms of Poly(ethylene succinamide)and Its Applications in Fe^(3+)Detection and Data Encryption

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Chinese Journal of Polymer Science 2023年第1期41卷 129-142页

作者： Xubao Jiang Qinghui Wang Bin li shusheng li Xiang Zheng Kong College of Chemistry and Chemical Engineering University of JinanJinan250022China Québec Center for Functional Materials Department of ChemistryUniversitéde SherbrookeSherbrookeQCJ1K2R1Canada

Conventional fluorescent polymers are featured by large conjugation *** contrast,a new class of fluorescent polymers without any conjugations is gaining great interest in immerging *** is a typical member of the conjugation-free fluorescent ***,studies on their electrophotonic property are hardly available,although widely used in many ***,poly(ethylene succinamide),PA24,is synthesized;its chemical structure confirmed through multiple techniques(NMR,FTIR,XRD,etc.).PA24 is highly emissive as solid and in its solution at room temperature,and the emission is excitation and concentration dependant,with an unusual blue shift under excitation from 270 nm to 320 nm,a hardly observed phenomenon for all fluorescent *** similar emission behavior is also observed under cryogenic condition at 77 *** emission behavior is thoroughly studied;the ephemeral emission blue-shift is interpreted through Förster resonance energy *** on its structures,the emission mechanism is ascribed to cluster-triggered emission,elucidated from multianalyses(NMR,FTIR,UV absorbance and DLS).In presence of a dozen of competitive metal ions,PA24 emission at 450 nm is selectively quenched by Fe^(3+).PA24 is used as probe for Fe^(3+)and H_(2)O_(2) detections and in data ***,this work provides a novel face of polyamide with great potential applications as sensors in different fields.

关键词： Polyamide Fluorescent emission Cluster formation Ferric ion detection Data encryption

Immobilization of cobalt oxide nanoparticles on porous nitrogen-doped carbon as electrocatalyst for oxygen evolution

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Chinese Journal of Chemical Engineering 2022年第12期52卷 10-18页

作者： shusheng li Rui Kuang Xiangzheng Kong Xiaoli Zhu Xubao Jiang College of Chemistry and Chemical Engineering University of JinanJinan 250022China College of Traffic Civil Engineering Shandong Jiaotong UniversityJinan 250357China

Highly efficient and robust electrocatalysts have been in urgent demand for oxygen evolution reaction(OER).For this purpose,high-cost carbon materials,such as graphene and carbon nanotubes,have been used as supports to metal oxides to enhance their catalytic *** report here a new Co_(3)O_(4)-based catalyst with nitrogen-doped porous carbon material as the support,prepared by pyrolysis of porous polyurea(PU) with Co(NO_(3))_(2)immobilized on its *** this end,PU was first synthesized,without any additive,through a very simple one-step precipitation polymerization of toluene diisocyanate in a binary mixture of H2O-acetone at room *** immersing PU in an aqueous solution of Co(NO_(3))_(2)at room temperature,a cobalt coordinated polymer composite,Co(NO_(3))_(2)/PU,was obtained,which was heated at 500℃ in air for 2 h to get a hybrid,Co_(3)O_(4)/NC,consisting of Co_(3)O_(4)nanocrystals and sp2-hybridized N-doped *** this Co_(3)O_(4)/NC as a catalyst in OER,a current density of10 mA·cm^(-2)was readily achieved with a low overpotential of 293 mV with a Tafel slope of87 mV·dec^(-1),a high catalytic *** high performance was well retained after 1000 recycled uses,demonstrating its good *** work provides therefore a facile yet simple pathway to fabrication of a new transition metal oxides-based N-doped carbon catalyst for OER with high performance.

关键词： Porous polyurea N-doped carbon-Co_(3)O_(4)hybrid Oxygen evolution Catalyst Electrolysis Electrochemistry

Optimization of Urban Ecological Network Based on MSPA-MCR Model: A Case Study of Jingzhou City

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Journal of Landscape Research 2024年第2期16卷 30-34页

作者： li shusheng ZENG Junfeng College of Horticulture and Gardening Yangtze UniversityJingzhouHubei 434025China

As a key carrier supporting urban ecological health and living environment quality,urban ecological network is a key focus of current urban green space *** City of Hubei Province is taken as the research *** on GIS technology platform,MSPA method is used to analyze the landscape pattern of Jingzhou *** this basis,the landscape connectivity evaluation method is used to accurately identify and extract the source areas with important ecological value in Jingzhou ***,the normalization method and weighting method are combined to create a resistance factor evaluation system to construct the resistance *** on the MCR model,the ecological network of Jingzhou City is successfully constructed,and targeted spatial optimization strategies and development suggestions are proposed.

关键词： Ecological network MSPA Landscape connectivity evaluation Normalization method MCR model Ecological source area Jingzhou City

Machine learning discovery of distinguishing laboratory features for severity classification of COVID-19 patients

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IET Cyber-Systems and Robotics 2021年第1期3卷 31-43页

作者： Yang Xiao li Yan Mingyang Zhang Kent E.Pinkerton Haosen Cao Ying Xiao Wei li Shuai li Yancheng Wang shusheng li Zhiguo Cao Gary Wing-Kin Wong Hui Xu Hai-Tao Zhang School of Artificial Intelligence and Automation Huazhong University of Science and TechnologyWuhanChina Department of Emergency Tongji Hospital of Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina Department of Pediatrics School of MedicineDepartment of AnatomyPhysiology and Cell BiologySchool of MedicineSchool of Veterinary MedicineUniversity of CaliforniaDavisCAUSA Biomedical Engineering Institute School of Control Science and EngineeringShandong UniversityJinanChina Department of Paediatrics The Chinese University of Hong KongHong KongChina Department of Anesthesiology Tongji Hospital of Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina

The exponential spread of COVID-19 worldwide is evident,with devastating outbreaks primarily in the United States,Spain,Italy,the United Kingdom,France,Germany,Turkey and *** of 1 May 2020,a total of 3,308,386 confirmed cases have been reported worldwide,with an accumulative mortality of 233,*** to the complexity and uncertainty of the pathology of COVID-19,it is not easy for front-line doctors to categorise severity levels of clinical COVID-19 that are general and severe/critical cases,with *** more than 300 laboratory features,coupled with underlying disease,all combine to complicate proper and rapid patient ***,such screening is necessary for early triage,diagnosis,assignment of appropriate level of care facility,and institution of timely intervention.A machine learning analysis was carried out with confirmed COVID-19 patient data from 10 January to 18 February 2020,who were admitted to Tongji Hospital,in Wuhan,China.A softmax neural network-based machine learning model was established to categorise patient severity *** to the analysis of 2662 cases using clinical and laboratory data,the present model can be used to reveal the top 30 of more than 300 laboratory features,yielding 86.30%blind test accuracy,0.8195 F1-score,and 100%consistency using a two-way patient classification of severe/critical to *** severe/critical cases,F1-score is 0.9081(*** is 0.9050,and precision is 0.9113).This model for classification can be accomplished at a mini-second-level computational cost(in contrast to minute-level manual).Based on available COVID-19 patient diagnosis and therapy,an artificial intelligence model paradigm can help doctors quickly classify patients with a high degree of accuracy and 100%consistency to significantly improve diagnostic and classification *** discovered top 30 laboratory features can be used for greater differentiation to serve as an essential supplement to current guidelines,

关键词： severity patients diagnosis

A Novel Method of Newton Iteration in Complex Field and Lattice Search for Locating Partial Discharges in Transformers

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中国电机工程学报 2013年第9期33卷 I0020-I0020页

作者： ZHENG shusheng li Chengrong HE Meng North China Electric Power University

在变压器局部放电特高频定位的多传感器时间差测量中不可避免地存在误差,这往往导致时间差方程组在实数域内无解。为了得到时间差方程组的最优近似解,提出了复数域牛顿迭代网格搜索方法。该方法在复数域内进行迭代;当迭代结果为实数时... 详细信息

在变压器局部放电特高频定位的多传感器时间差测量中不可避免地存在误差,这往往导致时间差方程组在实数域内无解。为了得到时间差方程组的最优近似解,提出了复数域牛顿迭代网格搜索方法。该方法在复数域内进行迭代;当迭代结果为实数时就将其作为定位结果;当迭代结果为复数时,以其实部为中心点坐标,在该点周围局部区域内采用网格搜索法计算最优近似解。通过在变压器上开展试验检验了该方法的可行性和准确性。研究表明,在一定时间误差下,在实数域采用牛顿迭代法计算时不收敛,而在复数域可以收敛,平均定位误差为0.20 m。复数域牛顿迭代网格搜索方法能够在一定时间误差下求解时间差方程组,给出最优近似解,实现局部放电定位。

关键词：牛顿迭代法局部放电 Lattice 变压器搜索复合场定位 newton

COVID-19 mortality in ICUs associated with critical care staffing

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Burns & Trauma 2021年第1期9卷 540-544页

作者： Jingjing Xi lin Zeng shusheng li Yuhang Ai Xiandi He Yan Kang Yimin li Yanping Mo Yue Peng Kejian Qian Bingyu Qin Chunting Wang Jing Yan Fachun Zhou Hua Zhang Penglin Ma Critical Care Medicine Department Peking University Third HospitalBeijingChina Research Center of Clinical Epidemiology Peking University Third HospitalBeijingChina Tongji Hospital Affiliated to Tongji Medical College Huazhong University of Science and TechnologyWuhanHubeiChina Department of Critical Care Medicine Xiangya HospitalCentral South UniversityChangshaHunanChina The First Affiliated Hospital of Bengbu Medical College BengbuAnhuiChina West China Hospital of Sichuan University ChengduSichuanChina The First Affiliated Hospital of Guangzhou Medical University Guangzhou Institute of Respiratory HealthGuangzhouGuangdongChina Beijing Ditan Hospital Capital Medical UniversityChaoyangBeijingChina The Third Xiangya Hospital Central South UniversityChangshaHunanChina The First Affiliated Hospital of Nanchang University NanchangJiangxiChina Henan Provincial People’s Hospital ZhengzhouHenanChina Shandong Provincial Hospital Affiliated to Shandong First Medical University ShandongChina Zhejiang Hospital HangzhouChina The First Affiliated Hospital Chongqing Medical UniversityChongqingChina Critical Care Medicine Department Guiqian International General HospitalGuiyangGuizhouChina.

To the Editor Coronavirus disease 2019(COVID-19)has been around for over a year since December 2019,and the global outlook is not *** of its high transmissibility and high mortality,management of the COVID-19 pandemic... 详细信息

关键词： COV critical globally

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我国农村民间金融发展的现状分析及路径选择

经济与管理研究 2006年第4期27卷 38-41页

作者：李树生首都经济贸易大学

笔者认为,我国农村民间金融具有重要地位,是解决“三农”问题的关键。我国农村民间金融具有方便高效、灵活简单、周到及时等优势,有利于支持农村经济发展,但也隐藏着较大风险。因此,我国农村民间金融发展的出路在于规范和引导民间资金,... 详细信息

笔者认为,我国农村民间金融具有重要地位,是解决“三农”问题的关键。我国农村民间金融具有方便高效、灵活简单、周到及时等优势,有利于支持农村经济发展,但也隐藏着较大风险。因此,我国农村民间金融发展的出路在于规范和引导民间资金, 建立和谐的农村金融体系。

关键词：农村经济民间金融制度创新

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多火源通道火灾流场特性的实验与数值研究

哈尔滨工程大学学报 2013年第2期34卷 165-168页

作者：李树声战咏梅哈尔滨工程大学航天与建筑工程学院黑龙江哈尔滨150001 顺阳汽车检测维修服务有限公司海南三亚572000

为研究多火源通道火灾热流场特性,搭建一个矩形通道火灾实验台,开展了单火源和多火源等情况下的相关实验,测量了通道顶棚下5 cm处烟气层温度.对烟气层与下层冷空气间的浮力差进行了研究,分析了多火源与单火源对浮力差的影响,研究发现多... 详细信息

为研究多火源通道火灾热流场特性,搭建一个矩形通道火灾实验台,开展了单火源和多火源等情况下的相关实验,测量了通道顶棚下5 cm处烟气层温度.对烟气层与下层冷空气间的浮力差进行了研究,分析了多火源与单火源对浮力差的影响,研究发现多火源会加剧燃料汽化,致使火源燃烧加剧,浮力差增大.分别对单火源、两火源及三火源通道火灾进行了数值模拟,模拟结果表明,多火源通道火灾流场内火焰呈相互靠拢状态,此时分散的火源将会表现出大面积火灾的燃烧特征,加剧火灾破坏程度.

关键词：多火源通道火灾浮力差单火源数值模拟

JWZ250减速涡轮钻具在丘东10井的现场试验

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石油钻采工艺 1999年第5期21卷 24-26页

作者：谭春飞李树盛石油大学(北京)石油工程系

中转速、低压降、高扭矩减速涡轮钻具配合高效优质ＰＤＣ钻头或高速长寿命ＡＴＭ、ＭＡＸ等系列牙轮钻头钻进，可大幅度提高大直径井眼的钻进速度。介绍了φ２５０ｍｍ减速涡轮钻具的工作原理及特点，及在吐哈油田正东１０井的试验情况... 详细信息

中转速、低压降、高扭矩减速涡轮钻具配合高效优质ＰＤＣ钻头或高速长寿命ＡＴＭ、ＭＡＸ等系列牙轮钻头钻进，可大幅度提高大直径井眼的钻进速度。介绍了φ２５０ｍｍ减速涡轮钻具的工作原理及特点，及在吐哈油田正东１０井的试验情况。试验表明，减速涡轮钻具配牙轮钻头钻进比转盘旋转钻进的机械钻速提高２３０％；配ＰＤＣ钻头钻进比转盘旋转钻进的机械钻速提高３３６％。从而缩短了钻井周期，节约了钻井成本，取得了较好的效果。

关键词：大眼井钻井减速器涡轮钻具钻头钻速钻具