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Chinese Optics Letters 2007年第12期5卷 709-711页

作者： Weibin chen Qiwen zhan Electro-Optics Graduate Program University of Dayton 300 College Park Dayton Ohio 45469-0245 USA

Plasmonic field enhancement in a fully coated dielectric near field scanning optical microscope （NSOM） probe under radial polarization illumination is analyzed using an axially symmetric three-dimensional （3D） finite element method （FEM） model. The enhancement factor strongly depends on the illumination spot size, taper angle of the probe, and the metal film thickness. The tolerance of the alignment angle is investigated. Probe designs with different metal coatings and their enhancement performance are studied as well. The nanometric spot size at the tip apex and high field enhancement of the apertureless NSOM

关键词： Field enhancement Finite element method Metrology Near field scanning optical microscopy Polarization Rayleigh scattering

SPAR: set-based piecewise aggregate representation for time series anomaly detection

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Science China(Information Sciences) 2021年第4期64卷 217-219页

作者： Peng zhan Yupeng HU lin chen Wei LUO Xueqing li School of Software Shandong University Informatization Office Shandong University School of Computer Science and Technology Shandong University

Dear editor,Time series anomaly detection, aiming for identifying unexpected observations within the given time series, has been considered as one of the most challenging studies in time series data mining [1, 2]. In this study, we present a novel set-based piecewise aggregate representation (SPAR) for anomaly detection, dubbed as SPAR-AD.

关键词： Time Series Multi-domain Representation Anomaly Detection Data Mining

Recursive recurrent neural network:A novel model for manipulator control with different levels of physical constraints

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CAAI Transactions on Intelligence Technology 2023年第3期8卷 622-634页

作者： zhan li Shuai li Department of Computer Science Swansea UniversitySwanseaUK College of Engineering Swansea UniversitySwanseaUK

Manipulators actuate joints to let end effectors to perform precise path tracking *** neural network which is described by dynamic models with parallel processing capability,is a powerful tool for kinematic control of *** to physical limitations and actuation saturation of manipulator joints,the involvement of joint constraints for kinematic control of manipulators is essential and ***,current existing manipulator control methods based on recurrent neural networks mainly handle with limited levels of joint angular constraints,and to the best of our knowledge,methods for kinematic control of manipulators with higher order joint constraints based on recurrent neural networks are not yet *** this study,for the first time,a novel recursive recurrent network model is proposed to solve the kinematic control issue for manipulators with different levels of physical constraints,and the proposed recursive recurrent neural network can be formulated as a new manifold system to ensure control solution within all of the joint constraints in different *** theoretical analysis shows the stability and the purposed recursive recurrent neural network and its convergence to *** results further demonstrate the effectiveness of the proposed method in end‐effector path tracking control under different levels of joint constraints based on the Kuka manipulator *** with other methods such as the pseudoinverse‐based method and conventional recurrent neural network method substantiate the superiority of the proposed method.

关键词： dynamic neural networks recursive computation robotic manipulator

Flash memory based computing-in-memory system to solve partial differential equations

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Science China(Information Sciences) 2021年第6期64卷 257-258页

作者： Yang FENG Fei WANG Xuepeng zhan Yuan li Jiezhi chen School of Information Science and Engineering Shandong University

Dear editor,Many emerging non-volatile memories(NVM), such as resistive random access memory(RRAM) [1], phase-change memory(PCM) [2], and ferroelectric RAM(FeR AM) [3],together with the conventional flash memory [4, 5... 详细信息

关键词： Flash memory based computing-in-memory system to solve partial differential equations

Comprehensive bibliometric analysis of pharmacotherapy for bipolar disorders:Present trends and future directions

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World Journal of Psychiatry 2025年第1期15卷 153-167页

作者： Bo-Fan chen li liu Fang-Zhen lin Hai-Min Zeng Hai-Qiang Huang Chun-Fang zhang Cong-Cong liu Xiang chen Jie Peng Yun-Fa Wang Zhi-lin Wang Bin chen De-Le liu Yun liu Zheng-Zheng li Xin-Xing Zeng The Second Affiliated Hospital Jiangxi Medical CollegeNanchang UniversityNanchang 330006Jiangxi ProvinceChina The Second Clinical Medical College Jiangxi Medical CollegeNanchang UniversityNanchang 330006Jiangxi ProvinceChina Department of Rehabilitation Medicine The Second Affiliated HospitalJiangxi Medical CollegeNanchang UniversityNanchang 330006Jiangxi ProvinceChina Jiangxi Provincial People’s Hospital The First Affiliated Hospital of Nanchang Medical CollegeNanchang 330006Jiangxi ProvinceChina Department of Psychiatry Jiangxi Mental HospitalHospital of Nanchang UniversityNanchang UniversityNanchang 330029Jiangxi ProvinceChina

BACKGROUND Bipolar disorder(BD)is a severe mental illness characterized by significant mood *** drug treatment modalities are crucial for managing *** To analyze the current status and future trends of global research on BD drug treatment over the last *** The Web of Science Core Collection database spanning from 2015 to 2024 was utilized to retrieve literature related to BD drug treatment.A total of 2624 articles were *** visualization and analysis were conducted using CiteSpace,VOSviewer,Pajek,Scimago Graphica,and R-studio bibliometrix to identify RESULTS The United States,China,and the United Kingdom have made the most significant contributions to research on BD drug treatment and formed notable research collaboration *** University of Pittsburgh,Massachusetts General Hospital,and the University of Michigan have been identified as the major research institutions in this *** Journal of Affective Disorders is the most influential journal.A keyword analysis revealed research hotspots related to clinical symptoms,drug efficacy,and genetic mechanisms.A citation analysis identified the management guidelines published by Yatham et al in 2018 as the most cited *** This study provides a detailed overview of the field of BD drug treatment,highlighting key contributors,research hotspots,and future *** study findings can be employed as a reference for future research and policymaking,which may enable further development and optimization of BD pharmacotherapy.

关键词： Bipolar disorder Drug treatment Bibliometric analysis Visualization Mental disorder

New Discovery of Shizhushan Superlarge Wollastonite Deposit in Xinyu City, Jiangxi Province

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Acta Geologica Sinica(English Edition) 2018年第1期92卷 1670-1671页

作者： HU Zhenghua WANG Xlanguang chen Guohua li Yanhong zhan Tlanwe chen Sibao liU Shaohua chen Xuguang Geological Survey of Jiangxi Province Nanchang 330000 China Administration of Geological Prospecting Fund of Jiangxi Province Nanchang 330030 China China University of Geosciences Beijing 100083 China Geological Party Coal Geological Bureau of Jiangxi Province Xinyu 336600 Jiangxi China

Objective The Mengshan area of the Xinyu City, Jiangxi Province is an important wollastonite production base in China. As early as the 90s of the 20th century, more than ten medium to small-sized wollastonite deposits, such as the Yueguangshan and Caofangmiao Deposits were discovered in the outer contact zone of the Mengshan rock mass. After that, no more progress was achieved in wollastonite prospection. In 2016, the project funded by the Geological Prospecting Fund of Jiangxi Province made significant breakthroughs in the ＂General Survey of the Shizhushan Wollastonite Ore in the Yushui District and zhangmuqiao Wollastonite Ore in Shanggao County, Xinyu City, Jiangxi Province＂ in the Mengshan area. The new discovered Shizhushan Wollastonite Deposit has a scale of 50 million tons and its resources scale far exceeds that of the Seeleys Bay Wollastonite Deposit discovered in Canada.

关键词： New Discovery of Shizhushan Superlarge Wollastonite Deposit in Xinyu City Jiangxi Province

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紫外线消毒系统中超声波抑垢的机制及参数优化

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土木与环境工程学报（中英文） 2025年第1期47卷 221-228页

作者：陈光赵志伟李莉重庆大学环境与生态学院重庆400045

紫外消毒技术因具有无须投加化学药剂、消毒广谱性、产生副产物少等优势越来越受重视,但石英套管结垢引起的消毒效果难以保障,成为限制紫外消毒技术发展的瓶颈。在污水厂紫外线消毒渠中搭建中试试验装置,利用超声波抑制石英套管结垢,结... 详细信息

紫外消毒技术因具有无须投加化学药剂、消毒广谱性、产生副产物少等优势越来越受重视,但石英套管结垢引起的消毒效果难以保障,成为限制紫外消毒技术发展的瓶颈。在污水厂紫外线消毒渠中搭建中试试验装置,利用超声波抑制石英套管结垢,结果表明,超声波能通过延长结垢诱导期来抑制垢的生成;以相对紫外线强度为考察对象,通过单因素试验确定超声波功率、清洗周期、超声时间合适的范围分别在500~1000 W、0.5~1.0 d、20~40 min;对于使用时间为0、0.5、1、3、5 a的石英套管,超声波均有很好的抑垢效果。为了进一步优化参数,采用Box-Behnken设计法和响应面分析方法对主要因素加以优化,得到了响应面回归模型和最优解。结果表明,超声波技术抑垢清垢的优化工艺参数为超声波功率P=965 W,清洗周期T=0.5 d,超声时间t=34 min,预测相对紫外线强度最大值为1.01。通过统计学检验,模型具有良好的拟合性,在优化工艺条件下得到的相对紫外线强度预测值与试验值接近,误差为1.00%。

关键词：超声波紫外线消毒石英套管结垢响应面法

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Sludge composition and characteristics shaped microbial community and further determined process performance: A study on full-scale thermal hydrolysis-anaerobic digestion processes

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Journal of Environmental Sciences 2024年第3期137卷 96-107页

作者： Wei liu chenxiang Sun Wei li Tianle li zhan chen Jiawei Wang Zhengran Ren Xianghua Wen School of Environment Tsinghua UniversityBeijing 100084China Jinneng Holding Group DatongShanxi 037000China Research and Development Center Beijing Drainage Group Co.Ltd.Beijing 100124China Beijing Dabeinong Science and Technology Group Co. Ltd.Beijing 100080China

Anaerobic digestion (AD) with thermal hydrolysis (TH) pretreatment is a promising process for excess sludge treatment,while there lacks of the knowledge from full-scale process about the impact of sludge composition and characteristics on microbial community and *** sludge physiochemical indices,microbial community and performance data of four full-scale TH-AD plants were characterized,and their relationships was *** four plants were operated under almost similar total organic loading rate (OLR)but their methanogenesis performance differentiate into two groups,namely superior group(SupG) and the inferior group (Inf G).In both groups,TH effectively solubilized particulate organic compounds,meanwhile raised the ammonia nitrogen (NH_(4)^(+)-N) and volatile fatty acid (VFA) *** with the Sup G,thermal hydrolyzed sludge of Inf G had higher level of VFAs,NH_(4)^(+)-N and total chemical oxygen demand (t COD),which showed higher inhibition effect on microbes,leading to a community with lower diversity,lower abundance of carbohydrate degrading functional guild,higher protein degrading one,and methanogens that adapted to limited substrates,and further declined the methane production ***,it was recommended that OLR alone was not sufficient for controlling the system in design and operation,the concentration of VFAs,NH_(4)^(+)-N and t COD should be equally *** higher concentration,together with the higher abundance of Defluviitoga and Proteiniphilum were recommended as indicators for inferior running *** results proposed that microbial communities played a role of bridge between environmental factors and performance,provided implications for engineering ecology and operational regulation for full-scale sludge TH-AD process.

关键词： Thermal hydrolysis Anaerobic digestion Microbial community Full-scale

THE WALL EFFECT ON VENTILATED CAVITATING FLOWS IN CLOSED CAVITATION TUNNELS

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Journal of Hydrodynamics 2008年第5期20卷 561-566页

作者： chen Xin LU Chuan-jing li Jie PAN zhan-cheng Department of Engineering Mechanics Shanghai Jiao Tong University Shanghai 200240 China

For ventilated cavitating flows in a closed water tunnel, the wall effect may exert an important influence on cavity shape and hydrodynamics, An isotropic mixture multiphase model was established to study the wall effect based on the RANS equations, coupled with a natural cavitation model and the RNG k-ε turbulent model. The governing equations were discretized using the finite volume method and solved by the Gauss-Seidel linear equation solver on the basis of a segregation algorithm. The algebraic multigrid approach was carried through to accelerate the convergence of solution. The steady ventilated cavitating flows in water tunnels of different diameter were simulated for a conceptual underwater vehicle model which had a disk cavitator. It is found that the choked cavitation number derived is close to the approximate solution of natural cavitating flow for a 3-D disk. The critical ventilation rate falls with decreasing diameter of the water tunnel. However, the cavity size and drag coeflicient are rising with the decrease in tunnel diameter for the same ventilation rate, and the cavity size will be much different in water tunnels of different diameter even for the same ventilated cavitation number.

关键词： ventilated cavitation water tunnel choked cavitation number critical ventilation rate

Passive convergence-permeable reactive barrier (PC-PRB): An effective configuration to enhance hydraulic performance

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Frontiers of Environmental Science & Engineering 2022年第12期16卷 79-88页

作者： Kaixuan Zheng Xingshen Luo Yiqi Tan Zhonglei li Hongtao Wang Tan chen li Zhao liangtong zhan School of Environment Tsinghua UniversityBeijing100084China College of life and Environmental Sciences Minzu University of ChinaBeijing100081China Institute of Geotechnical Engineering College of Civil Engineering and ArchitectureZhejiang UniversityHangzhou310058China

A novel permeable reactive barrier(PRB)configuration,the so-called passive convergence-permeable reactive barrier(PC-PRB),is proposed to overcome several shortcomings of traditional PRB configurations,such as high dependency to site hydrogeological characteristics and plume *** PC-PRB is designed to make the plume converge towards the PRB due to the passive hydraulic decompression-convergent flow *** corresponding passive groundwater convergence(PC)system is deployed upstream of the PRB system,which consists of passive wells,water pipes,and a buffer layer.A two-dimensional(2D)finite-difference hydrodynamic code,entitled PRB-Flow,is developed to examine the hydraulic performance parameters(i.e.,capture width(W)and residence time(t))of *** is proved that the horizontal 2D capture width(Wh)and vertical 2D capture depth(Wv)of the PC-PRB remarkably increase compared to that of the continuous reactive barrier(C-PRB).The aforementioned relative growth values in order are greater than 50%and 25%in this case ***,the PRB geometric dimensions as well as the materials cost required for the same plume treatment *** sensitivity analysis reveals that the dominant factors influencing the hydraulic performance of the PC-PRB are the water pipe length(Lp),PRB length(LPRB),passive well height(Hw),and PRB height(HPRB).The discrepancy between the Wh of PC-PRB and that of the C-PRB(i.e.,∆Wh)has a low correlation with PRB parameters and mainly depends on Lp,which could dramatically simplify the PC-PRB design ***,the proposed PC-PRB exhibits an effective PRB configuration to enhance hydraulic performance.

关键词： Passive convergence-permeable reactive barrier(PC-PRB) Permeable reactive barrier configuration Numerical simulation Hydraulic performance evaluation Sensitivity analysis