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Fast-Charging Protocols Design of Lithium-Ion Battery: A Multiple-Objective Bayesian Optimization Perspective

IEEE Transactions on Transportation Electrification 2025年第3期11卷 8327-8338页

作者： Zhu, Rong Peng, Weiwen Yang, Fangfang Xie, Min City University of Hong Kong Department of Systems Engineering Hong Kong Sun Yat-sen University School of Intelligent Systems Engineering Shenzhen518107 China Guangdong Provincial Key Laboratory of Fire Science and Technology Guangzhou510006 China

Fast-charging lithium-ion batteries are crucial for accelerating the adoption of electric vehicles (EVs) by reducing charging time and improving operational efficiency. However, fast charging presents a significant challenge due to the knee point in the battery degradation trajectory, beyond which capacity decreases rapidly. Optimizing fast-charging protocols that consider knee point capacity and cycle life is essential but requires extensive and costly cycling aging tests to obtain the necessary degradation labels. To address this challenge, a multiobjective Bayesian optimization framework is proposed for fast-charging protocol optimization, jointly considering knee point capacity and cycle life. To reduce experimental costs, two deep learning-based early prediction models are developed to predict knee point capacity and cycle life using data from the first 60 cycles. The framework employs a noisy expected hypervolume improvement acquisition function to handle prediction uncertainties during multiobjective optimization. Validation on publicly available battery datasets demonstrates that the proposed framework achieves effective optimization of fast-charging protocols while reducing experimental costs by approximately 90%. © 2015 IEEE.

关键词： Charging stations

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Facile integration of an Al-rich Al_(1-x)In_(x)N photodetector on free-standing GaN by radio-frequency magnetron sputtering

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Chinese Physics B 2023年第11期32卷 591-597页

作者：刘新科林之晨林钰恒陈建金邹苹周杰李博沈龙海朱德亮刘强俞文杰黎晓华顾泓王新中黄双武 College of Materials Science and Engineering Institute of Microelectronics(IME)Guangdong Research Center for Interfacial Engineering of Functional MaterialsShenzhen UniversityShenzhen 518060China School of Science Shenyang Ligong UniversityShenyang 110159China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information TechnologyChinese Academy of SciencesShanghai 200050China Gusu Laboratory of Materials Science Suzhou 215123China Information Technology Research Institute Shenzhen Institute of Information TechnologyShenzhen 518172China

Al_(1-x)In_(x)N, a Ⅲ-nitride semiconductor material, is currently of great research interest due to its remarkable physical properties and chemical stability. When the Al and In compositions are tuned, its band-gap energy varies from 0.7 eV to 6.2 eV, which shows great potential for application in photodetectors. Here, we report the fabrication and performance evaluation of integrated Al_(1-x)In_(x)N on a free-standing GaN substrate through direct radio-frequency magnetron *** optical properties of Al_(1-x)In_(x)N will be enhanced by the polarization effect of a heterostructure composed of Al_(1-x)In_(x)N and other Ⅲ-nitride materials. An Al_(1-x)In_(x)N/Ga N visible-light photodetector was prepared by semiconductor fabrication technologies such as lithography and metal deposition. The highest photoresponsivity achieved was 1.52 A·W^(-1)under 365 nm wavelength illumination and the photodetector was determined to have the composition Al0.75In0.25N/GaN.A rise time of 0.55 s was observed after transient analysis of the device. The prepared Al_(1-x)In_(x)N visible-light photodetector had a low dark current, high photoresponsivity and fast response speed. By promoting a low-cost, simple fabrication method,this study expands the application of ternary alloy Al_(1-x)In_(x)N visible-light photodetectors in optical communication.

关键词： Ali-xIn N photodetector GaN radio-frequency magnetron sputtering ternary alloy

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Fabrication of dense SiBCN monolith at a lower temperature and its high-temperature performance

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Journal of Advanced Ceramics 2024年第8期13卷 1198-1211页

作者： Zi-Bo Niu Daxin Li Dechang Jia Zhihua Yang Kunpeng Lin Yan Wang Paolo Colombo Ralf Riedel Yu Zhou Institute for Advanced Ceramics School of Materials Science and EngineeringHarbin Institute of TechnologyHarbin 150080China Key Laboratory of Advanced Structural-Function Integrated Materials and Green Manufacturing Technology Ministry of Industry and Information TechnologyHarbin 150080China State Key Laboratory of Advanced Welding and Joining Harbin Institute of TechnologyHarbin 150080China Department of Industrial Engineering University of PadovaPadova 3513iItaly Department of Materials Science and Engineering The Pennsylvania State UniversityUniversity Park 16802USA Institute of Materials Science Darmstadt University of TechnologyDarmstadt 64287Germany School of Materials Science and Engineering Harbin Institute of Technology(Shenzhen)Shenzhen 518055China

In this study,a crack-free pyrolysis process of partially cured precursor powder compacts was developed to prepare dense silicon boron carbonitride(SiBCN)monoliths at much lower temperatures(1300℃),thereby circumventing the challenges of sintering densification(>1800℃).Unlike the elastic fracture in over-cured precursors or the viscoelastic deformation in under-cured precursors,the partially cured precursor,exhibiting elastic-plastic deformation behavior,facilitates limited nanoscale pore formation in a dense structure,achieving a balance between crack-free pyrolysis and *** to SiBCN derived from the over-cured precursor(σ=~159 MPa,K_(IC)=1.9 MPa:m^(1/2),Vickers hardness(HV)=7.8 GPa,and E=122 GPa),the resulting SiBCN monolith exhibited significantly improved mechanical properties(σ=~304 MPa,K_(IC)=3.7 MPa-m12,HV=10.6 GPa,and E=161 GPa)and oxidation *** addition,this study investigated the high-temperature performance of SiBCN monoliths,including crystallization and oxidation,and determined the oxidation kinetics induced by pore structure healing and the different oxidation mechanisms of Si-C-N and B-C-N clusters in the amorphous *** to its unique composition and structure,the SiBCN ceramic oxide layer exhibits exceptional self-healing effects on repairing the nanoporous system in the initial stage and shows outstanding high-temperature stability during prolonged oxidation,mitigating adverse effects from bubble formation and *** to the nanoporous structure,the oxidation rate is initially controlled by gas diffusion following a linear law before transitioning to oxide layer diffusion characterized by a parabolic ***,due to different valence bond configurations,Si-C-N transforms into an amorphous SiCNO structure after phase separation,unlike the nucleation and growth of residual B-N-C.

关键词： silicon boron carbonitride(SiBCN)ceramics crack-free pyrolysis amorphous structure oxidation mechanisms kinetic law

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Pharmacokinetic model for extravascular administration based on uncertain differential equation

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Journal of Ambient Intelligence and Humanized Computing 2023年第10期14卷 13887-13899页

作者： Liu, Zhe Kang, Rui School of Reliability and Systems Engineering Beihang University Beijing100191 China Science and Technology on Reliability and Environmental Engineering Laboratory Beijing100083 China

Pharmacokinetics studies the time course of drug concentration in body compartments, and one of the commonly used methods of administration is extravascular administration. Undoubtedly, biological systems are subject to various internal and external noises that change over time. To rationally deal with these dynamic noises, this paper deduces a pharmacokinetic model for extravascular administration using uncertain differential equations for the first time. Some essential pharmacokinetic indexes such as drug concentration, area under the curve, and maximum drug concentration are investigated. Based on the three basic principles of reliability science, i.e., margin-based reliable principle, eternal degradation principle and uncertainty principle, the belief reliability for drug is investigated. The minimum cover estimation for the set of unknown parameters in this uncertain pharmacokinetic model is provided. Numerical example and a real data analysis illustrate our method in detail. Finally, the paradox of a stochastic pharmacokinetic model is presented. © 2022, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

关键词： Reliability

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Adversarial dual decision-based model for event-related opinion sentence recognition

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Multimedia Tools and Applications 2024年 1-18页

作者： Xiang, Yan Qin, Yuan Yu, Zhengtao Huang, Yuxin Faculty of Information Engineering and Automation Kunming University of Science and Technology Kunming650500 China Yunnan Key Laboratory of Artificial Intelligence Kunming University of Science and Technology Kunming650500 China

Event-related opinion sentences recognition aims to mine the valuable comments discussing about the specific event from the mass of microblogs comments. It’s difficult to label sufficient comments for a new microblogs event, and domain adaptation methods are suitable for this task, which can transfer the knowledge from the source domain(labeled event) to the target domain (unlabeled event). However, existing domain adaptation models do not make full use of the domain invariance to realize categories alignments of the two domains. Therefore, we propose a adversarial dual decision model for opinion sentences recognition, which takes advantage of the domain invariance that the opinion sentences are correlated with the event description. The proposed model has two generators to obtain different event-correlated features, and two classifiers to make dual decisions based on the two features. Through the adversarial process of generators and classifiers, the model completes the category feature alignment and realizes the opinion sentences recognition for the new event. The comparative experiment results show that our model outperforms the state-of-the-art models on six opinion sentences recognition tasks. In addition, we verify the effectiveness of each component of our model by ablation experiments. © The Author(s), under exclusive licence to Springer science+Business Media, LLC, part of Springer Nature 2024.

关键词： Adversarial machine learning

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Motion simulation of moorings using optimized LSTM neural network

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Journal of Oceanology and Limnology 2023年第5期41卷 1678-1693页

作者： Zhiyuan ZHUANG Fangjie YU Ge CHEN Department of Marine Technology College of Information Science and EngineeringOcean University of ChinaQingdao 266100China Laoshan Laboratory Qingdao 266237China

Mooring arrays have been widely deployed in sustained ocean observation in high resolution to measure finer dynamic features of marine ***,the irregular posture changes and nonlinear response of moorings under the effect of ocean currents face huge challenges for the deployment of mooring arrays,which may cause the deviations of measurements and yield a vacuum of observation in the upper *** developed a data-driven mooring simulation model based on LSTM(long short-term memory)neural network,coupling the ocean current with position data from moorings to predict the motion of moorings,including single-step output prediction and multi-step *** on the predictive information,the formation of the mooring array can be adjusted to improve the accuracy and integrity of ***,we proposed the cuckoo search(CS)optimization algorithm to tune the parameters of LSTM,which improves the robustness and generalization of the *** utilize the datasets observed from moorings anchored in the Kuroshio Extension region to train and validate the simulation *** experimental results demonstrate that the model can remarkably improve prediction accuracy and yield stable ***,compared with other optimization algorithms,CS is more efficient and performs better in simulating the motion of moorings.

关键词： mooring motion simulation long short-term memory(LSTM) optimization strategy hybrid deep learning

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Optimization of transverse unidirectional scattering by morphology modification of irregular V-shaped silicon nanoantennas

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Optoelectronics Letters 2025年第3期21卷 129-135页

作者： ZENG Ming ZHAO Feng WANG Xianghui School of Electrical and Information Engineering Tianjin UniversityTianjin300072China Institute of Modern Optics Tianjin Key Laboratory of Micro-scale Optical Information Science and TechnologyNankai UniversityTianjin300350China

A scheme based on irregular V-shaped silicon nanoantennas is proposed to optimize transverse unidirectional scattering under plane wave *** methods of designing regular shapes offer fewer parameters and higher search ***,due to the limitations of regular shapes,it is challenging to meet high-precision design *** shape design allows for a broader range of adjustments,but the complexity of shape parameters leads to lower search efficiency and a higher likelihood of converging to local optima.

关键词： irregular v shaped silicon nanoantennas plane wave irradiation design efficiency plane wave irradiationtraditional optimize transverse unidirectional scattering morphology modification transverse unidirectional scattering search efficiency

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Transmission of orbital angular momentum modes in Angular Symmetry Fibers

Transmission of orbital angular momentum modes in Angular Sy...

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2024 Asia Communications and Photonics Conference, ACP 2024 and International Conference on information Photonics and Optical Communications, IPOC 2024

作者： Qin, Suwan Rao, Xiongfeng Yang, Li Department of Electronic Engineering and Information Science University of Science and Technology of China Key Laboratory of Electromagnetic Space Information Chinese Academy of Science Hefei China

We propose an angular symmetry fiber and demonstrate its capability for the transmission of optical orbital angular momentum modes by using numerical analysis based on finite element method. © 2024 IEEE.

ISBN: (纸本)9798350379266

关键词： Optical fibers

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Design of NV color center fluorescence signal acquisition circuit based on FPGA architecture

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Optoelectronics Letters 2024年第12期20卷 721-727页

作者： ZENG Sen YANG Shuqiang LIU Jingyan ZHAO Chuang SHANG Zhengguo HE Xianming Key Laboratory of Optoelectronic Technology and Systems Ministry of Education of ChinaChongqing UniversityChongqing 400044China College of Physics and Electronics Information Luoyang Normal UniversityLuoyang 471934China School of Electrical Engineering Chongqing University of Science and TechnologyChongqing 401331China

Nitrogen-vacancy(NV)quantum defects in diamond are sensitive detectors of magnetic *** rapid development of NV-center magnetic sensor has higher requirements for high-speed and high-precision data acquisition,weak signal detection and ***,the existing sensing technologies based on diamond NV centers rely on bulky and expensive instruments,which must be replaced by a more compact *** we combine NV quantum sensing technology with integrated circuit technology to create a compact and easy-to-operate platform,which includes microwave source module,transistor-transistor logic(TTL)modulation module,digital lock-in amplifier(DLIA)module,*** order to confirm the reliability of the experimental platform,we not only tested the performance of each individual module,but also carried out optical detection magnetic resonance(ODMR)*** this platform,we can obtain a magnetic sensitivity of 465 nT/Hz^(1/2).This experimental platform with convenient operation and low noise has the potential to become an independent magnetic measuring instrument.

关键词： center centers fir

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Large area crystalline Weyl semimetal with nano Au film based micro-fold line array for THz detector

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science China(Technological sciences) 2023年第11期66卷 3267-3275页

作者： SONG Qi ZHOU Yu JIA ErSe WANG JiaTong ZHANG Min ZHANG BingYuan Shandong Key Laboratory of Optical Communication Science and Technology School of Physics Science and Information TechnologyLiaocheng UniversityLiaocheng 252059China North China Institute of Computing Technology Beijing 100083China Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic EngineeringShenzhen UniversityShenzhen 518060China School of Precision Instrument and Opto-electronics Engineering Tianjin UniversityTianjin 300072China

The advancement of 6G technology relies on the development of high-performance terahertz detectors that can operate at room *** detectors are crucial for Internet of Things(Io T)applications,which require sensitive environmental sensing and efficient reception of 6G *** significant research focus is on detection technology with high responsiveness and low equivalent noise power for 6G signals,which experience high losses in the *** meet the demand for ultra-sensitive detectors in 6G technology,we have employed several ***,we prepared a large area of Weyl-semimetal layer through magnetron ***,we obtained a high-quality Weyl-semimetal active layer by carefully controlling the annealing ***,a thin nano-Au layer was introduced as a micro-cavity reflection layer to enhance the device's detection ***,we incorporated an electromagnetic induction well to improve carrier confinement and enhance the detection *** proposed high-performance terahertz detector,with its potential for industrial production,offers a valuable technical solution for the advancement of 6G technology.

关键词： micro-cavity Weyl semimetal crystalline thin film THz device

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