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CSEE Journal of Power and Energy Systems 2024年第2期10卷 660-671页

作者： Jingyang yun Zheng Yan yun Zhou Peichao Zhang Weidong Hu Key Laboratory of Control of Power Transmission and Conversion of Ministry of Education Department of Electrical EngineeringShanghai Jiao Tong University

This paper proposes a multi-time collaborative restoration model for integrated electricity-gas distribution sys-tems(IEGDSs)considering multiple resources after extreme weather *** on the linearized power flow constraints of the unbalanced electrical distribution system(EDS)and gas distribution system(GDS),this problem can be formulated as a mixed-integer linear programming(MILP)*** improve the efficiency and veracity of the solution,a rolling optimiza-tion based two-stage method is developed with the first stage solved by a linear approximation model,and the second stage solved by real-time updated rolling *** solving the MILP problem using rolling optimization,the proposed model and solution method achieve efficient and reliable collaborative restoration of IEGDS considering multiple resources and unbal-anced operation characteristics of *** effectiveness of the proposed model and method is validated by using an IEGDS made of a 37-bus unbalanced EDS and 11-node *** Terms-Electricity-gas system,mix-integer linear programming,power system restoration.

关键词： Electricity-gas system mix-integer linear programming power system restoration

Tuning the band gap of the CIGS solar buffer layer Cd_(1-x)Zn_(x)S(x=0—1) to achieve high efficiency

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Optoelectronics Letters 2024年第2期20卷 100-106页

作者： TAN Zhiyuan XUE Yuming DAI hongli WANG Luoxin HU Xiaofeng BAI Xin Institute of New Energy Intelligence Equipment School of Integrated Circuit Science and EngineeringTianjin University of TechnologyTianjin 300384China

To evaluate the impact of zinc sulfate(ZnSO_(4)) concentration on the structural properties of the films,Cd_(1-x)Zn_(x)S thin films were formed on glass substrates using chemical bath deposition(CBD) in this *** effect of ZnSO_(4) precursor concentration on the surface morphology,optical properties,and morphological structure of the Cd_(1-x)Zn_(x)S films was *** study the impact of zinc doping content on the performance metrics of Cu(In_(1-x)Ga_(x))Se_(2)(CIGS)cells in the experimental group and to improve the buffer layer thickness,simulations were run using one-dimensional solar cell capacitance simulator(SCAPS-1D) software.

关键词： CIGS (x) layer

Scalable Distributed State Estimation over Binary Sensor Networks with Energy Harvester

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Guidance, Navigation and Control 2024年第2期4卷 163-193页

作者： Fei Han Longkang Ma Yanhua Song hongli Dong State Key Laboratory of Continental Shale Oil Northeast Petroleum University Daqing 163318 P.R.China Arti¯cial Intelligence Energy Research Institute Northeast Petroleum University Daqing 163318 P.R.China School of Electrical and Information Engineering Northeast Petroleum University Daqing 163318 P.R.China Heilongjiang Provincial Key Laboratory of Networking and Intelligent Control Northeast Petroleum University Daqing 163318 P.R.China

This paper deals with distributed state estimation problem for discrete time-varying systems over binary sensor networks,where every binary sensor is equipped with an energy *** input of every binary sensor considers the randomly occurring missing *** differences between the real and estimated inputs of binary sensor are employed to derive useful information in order to address the insufficient information for estimation *** information from neighboring nodes is transmitted only if its energy level is positive,where a random variable is introduced to formulate the energy *** means of the available information,distributed estimator is constructed for each binary sensor and the desirable performance constraints is given for the dynamic characteristics of estimation errors within anite time *** conditions are established for the existence of desired distribution estimation quantities through local performance analysis ***,the desired distributed estimator gains are calculated recursively,which means the desirable ***,the viability and efficiency of the distributed scheme are exhibited through a practical illustration.

关键词： Binary sensor network energy harvesting distributed estimation local analysis method

Value of procalcitonin and presepsin in the diagnosis and severity stratification of sepsis and septic shock

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World Journal of Emergency Medicine 2024年第2期15卷 135-138页

作者： Enfeng Ren hongli Xiao Guoxing Wang Yongzhen Zhao Han Yu Chunsheng Li Department of Emergency Medicine Beijing Friendship HospitalCapital Medical UniversityBeijing 100050China Department of Emergency Medicine Beijing Chaoyang HospitalCapital Medical UniversityBeijing 100050China

Sepsis is defined as life-threatening organ dysfunction caused by a dysregulated host response to infection.[1,2]Septic shock,the most severe form of sepsis,is characterized by circulatory and cellular/metabolic abnormalities,and can increase mortality to>40%.[1-3]Early recognition and risk stratification of septic shock are crucial but challenging because of the heterogeneity of its presentation and progression.

关键词： diagnosis sepsis mortality

LociScan,a tool for screening genetic marker combinations for plant variety discrimination

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The Crop Journal 2024年第2期12卷 583-593页

作者： Yang Yang hongli Tian Hongmei Yi Zi Shi Lu Wang Yaming Fan Fengge Wang Jiuran Zhao Beijing Key Laboratory of Maize DNA Fingerprinting and Molecular Breeding Maize Research InstituteBeijing Academy of Agriculture and Forestry SciencesBeijing 100097China

To reduce the cost and increase the efficiency of plant genetic marker fingerprinting for variety discrimination,it is desirable to identify the optimal marker *** describe a marker combination screening model based on the genetic algorithm(GA)and implemented in a software tool,Loci ***-based variety discrimination power provided the largest optimization space among multiple fitness *** GA parameters,an increase in population size and generation number enlarged optimization depth but also calculation *** algorithm afforded the same optimization depth as GA but vastly increased calculation *** comparison with two other software tools,Loci Scan accommodated missing data,reduced calculation time,and offered more fitness *** large datasets,the sample size of training data exerted the strongest influence on calculation time,whereas the marker size of training data showed no effect,and target marker number had limited effect on analysis speed.

关键词： Plant variety discrimination Genetic marker combination Variety discrimination power Genetic algorithm

Predict the evolution of mechanical property of Al-Li alloys in a marine environment

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Defence Technology（防务技术） 2024年第1期31卷 557-566页

作者： Wei Li Lin Xiang Guang Wu hongli Si Jinyan Chen Yiming Jin Yan Su Jianquan Tao Chunyang Huang State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing100036China Chongqing Innovation Center Beijing Institute of TechnologyChongqing400044China First Research Institute of the Ministry of Public Security for PR China Beijing100036China Southwest Technology and Engineering Research Institute Chongqing400039China

The ocean is one of the essential fields of national defense in the future,and more and more attention is paid to the lightweight research of Marine equipment and *** study it is to develop a Machine learning(ML)-based prediction method to study the evolution of the mechanical properties of Al-Li alloys in the marine *** obtained the mechanical properties of Al-Li alloy samples under uniaxial tensile deformation at different exposure times through Marine exposure *** obtained the strain evolution by digital image correlation(DIC).The strain field images are voxelized using 2D-Convolutional Neural Networks(CNN)autoencoders as input data for Long Short-Term Memory(LSTM)neural ***,the output data of LSTM neural networks combined with corrosion features were input into the Back Propagation(BP)neural network to predict the mechanical properties of Al-Li *** main conclusions are as follows:*** variation law of mechanical properties of2297-T8 in the Marine atmosphere is *** the increase in outdoor exposure test time,the tensile elastic model of 2297-T8 changes slowly,within 10%,and the tensile yield stress changes significantly,with a maximum attenuation of 23.6%.*** prediction model can predict the strain evolution and mechanical response simultaneously with an error of less than 5%.*** study shows that a CNN/LSTM system based on machine learning can be built to capture the corrosion characteristics of Marine exposure *** results show that the relationship between corrosion characteristics and mechanical response can be predicted without considering the microstructure evolution of metal materials.

关键词： Marine environment Al-Li alloy Machine learning Corrosion

Effect of the vortical structures on the hydrodynamic performance of a pitching hydrofoil

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Journal of Hydrodynamics 2024年第2期36卷 406-420页

作者： Rui Yuan Hui-yun Hao Qin Wu yun-qing Liu Biao Huang School of Mechanical Engineering Beijing Institute of TechnologyBeijing100081China

The objective is to study the vortical structural behaviors of a transient pitching hydrofoil and their effects on the hydrodynamic performance. The pitching motion of the hydrofoil is set to pitch up with an almost constant rate from 5° to 15° and then back to 5°, with the Reynolds number 4.4×10^(5) and the frequency 2 Hz. The results show that the main coherent structures around the pitching hydrofoil include small-scale laminar separation bubble (LSB), large-scale second vortex (SV) and trailing edge vortex (TEV) which are all vortical. The relationship between the vortical structure and the lift is investigated with the finite-domain impulse theory. It indicates that the major part of the lift is contributed by the LSB, whereas the shedding and the formation of the SV and TEV cause the fluctuation of the lift. The proper orthogonal decomposition (POD) method is applied to capture the most energetic modes, revealing that the LSB mode occupies a large amount of energy in the flow field. The dynamic mode decomposition (DMD) method accurately extracts the dominant frequency and modal characteristics, with the first mode corresponding to the mean flow, the second mode corresponding to the LSB structure and the third and fourth modes corresponding to the vortex shedding.

关键词： Hydrodynamics vortical structures finite-domain impulse theory proper orthogonal decomposition(POD) dynamic mode decomposition(DMD) Pitching hydrofoil

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一种基于拟牛顿迭代的安全定位算法

西北大学学报（自然科学版） 2017年第3期47卷 355-360页

作者：滕云刘宏立徐琨湖南大学电气与信息工程学院湖南长沙410082

由于无线传感网络通常需要部署在无人看管的环境中,网络中节点的位置信息很容易受到各种恶意攻击,导致大部分节点不能准确地确定自身位置,进而破坏整个网络后续工作的进行。针对无线传感网络安全定位问题,提出了一种基于拟牛顿迭代的安... 详细信息

由于无线传感网络通常需要部署在无人看管的环境中,网络中节点的位置信息很容易受到各种恶意攻击,导致大部分节点不能准确地确定自身位置,进而破坏整个网络后续工作的进行。针对无线传感网络安全定位问题,提出了一种基于拟牛顿迭代的安全定位算法。基于定位过程中遭受的恶意攻击特点,建立了对应的距离测量攻击模型,利用拟牛顿迭代算法对所有定位数据进行迭代运算,根据梯度的数学特性找出并过滤恶意锚节点,实现节点的安全定位。仿真结果表明,提出的安全定位算法能够很好地抵御恶意攻击对节点定位的影响,具有较好的定位性能,并且有很强的鲁棒性。

关键词：无线传感网络安全定位拟牛顿迭代过滤梯度

Rebuilding the theory of isotope fractionation for evaporation of silicate melts under vacuum condition

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Acta Geochimica 2024年第4期43卷 661-676页

作者： Jie Wang yun Liu Research Center for Planetary Science College of Earth and Planetary SciencesChengdu University of TechnologyChengdu 610059China State Key Laboratory of Ore Deposit Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang 550081China CAS Center for Excellence in Comparative Planetology Hefei 230026China

Isotope eff ects are pivotal in understanding silicate melt evaporation and planetary accretion *** on the Hertz-Knudsen equation,the current theory often fails to predict observed isotope fractionations of laboratory experiments due to its oversimplified ***,we point out that the Hertz-Knudsen-equation-based theory is incomplete for silicate melt evaporation cases and can only be used for situations where the vaporized species is identical to the one in the *** propose a new model designed for silicate melt evaporation under *** model considers multiple steps including mass transfer,chemical reaction,and *** derivations reveal a kinetic isotopic fractionation factor(KIFF orα)αour model=[m(^(1)species)/m(^(2)species)]^(0.5),where m(species)is the mass of the reactant of reaction/nucleation-limiting step or species of diffusion-limiting step and superscript 1 and 2 represent light and heavy isotopes,*** model can eff ectively reproduce most reported KIFFs of laboratory experiments for various elements,i.e.,Mg,Si,K,Rb,Fe,Ca,and ***,the KIFF-mixing model referring that an overall rate of evaporation can be determined by two steps jointly can account for the eff ects of low P_(H2)pressure,composition,and *** addition,we find that chemical reactions,diffusion,and nucleation can control the overall rate of evaporation of silicate melts by using the fitting slope in ln(−ln f)versus ln(t).Notably,our model allows for the theoretical calculations of parameters like activation energy(E_(a)),providing a novel approach to studying compositional and environmental eff ects on evaporation processes,and shedding light on the formation and evolution of the proto-solar and Earth-Moon systems.

关键词： Evaporation Kinetic isotopic fractionation Chemical kinetics Hertz-Knudsen equation CAIS

Value Iteration-Based Cooperative Adaptive Optimal Control for Multi-Player Differential Games With Incomplete Information

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IEEE/CAA Journal of Automatica Sinica 2024年第3期11卷 690-697页

作者： yun Zhang Lulu Zhang yunze Cai the Department of Automation Shanghai Jiao Tong UniversityShanghai 200240 the Key Laboratory of System Control and Information Processing Ministry of Education of ChinaShanghai 200240China

This paper presents a novel cooperative value iteration(VI)-based adaptive dynamic programming method for multi-player differential game models with a convergence *** players are divided into two groups in the learning process and adapt their policies *** method removes the dependence of admissible initial policies,which is one of the main drawbacks of the PI-based ***,this algorithm enables the players to adapt their control policies without full knowledge of others’ system parameters or control *** efficacy of our method is illustrated by three examples.

关键词： Adaptive dynamic programming incomplete information multi-player differential game value iteration