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Enhanced capacitive energy storage and dielectric temperature stability of A-site disordered high-entropy perovskite oxides

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Journal of Materials science & technology 2023年第14期145卷 66-73页

作者： Yating Ning Yongping Pu Chunhui Wu Shiyu Zhou Lei Zhang Jinbo Zhang Xian Zhang Yangchao Shang School of Materials Science and Engineering Shaanxi University of Science&TechnologyXi’an 710021China School of Electronic Information and Artificial Intelligence Shaanxi University of Science and TechnologyXi’an 710021China

In this work,a novel high entropy perovskite oxide(1-x)(Na_(0.2)Bi_(0.2)Ba_(0.2)Sr_(0.2)Ca_(0.2))TiO_(3-x)NaNbO_(3)(abbrevi-ated as(1-x)NBBSCT-x NN,x=0,0.05,0.1,0.15,and 0.2)was designed to improve temperature dielectric stability and energy storage performance by combining relaxor and antiferroelectric *** optimal composition of x=0.2 exhibits a high energy storage density of 3.51 J/cm^(3),together with wide temperature stable stability(■<15%,-70 to 110℃),excellent frequency stability(W rec andηvary by only±2.1%and±5.2%within the range of 1-600 Hz)and fast discharge rate(t_(0.9)=55.2 ns).This is mainly due to the enhancement of relaxation behavior and increase of E b caused by the decrease of grain *** results offer a new strategy for designing high entropy ceramic materials of high performance in the future.

关键词： Energy storage High-entropy perovskite Temperature stability Relaxor ferroelectrics

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Memristor-Based Genetic Algorithm for Image Restoration

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Journal of electronic science and technology 2022年第2期20卷 149-158页

作者： Yong-Bin Yu Chen Zhou Quan-Xin Deng Yuan-Jing-Yang Zhong Man Cheng Zheng-Fei Kang the School of Information and Software Engineering University of Electronic Science and Technology of ChinaChengdu 610054 the School of Computer Science Chengdu College of University of Electronic Science and Technology of ChinaChengdu 611731

This paper explores a way of deploying the classical algorithm named genetic algorithm(GA) with the memristor. The memristor is a type of circuit device with both characteristics of storage and computing, which provides the similarity between electronic devices and biological components, such as neurons, and the structure of the memristor-based array is similar to that of chromosomes in genetics. Besides, it provides the similarity to the image gray-value matrix that can be applied to image restoration with GA. Thus, memristor-based GA is proposed and the experiment about image restoration using memristor-based GA is carried out in this paper. And parameters,such as the size of initial population and the number of iterations, are also set different values in the experiment,which demonstrates the feasibility of implementing GA with memristors.

关键词： Image image similarity

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Finite-time fault-tolerant control of teleoperating cyber physical system against faults

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Journal of Systems engineering and electronics 2023年第2期34卷 469-478页

作者： PAN Chengwei LIU Xia CHEN Yong LI Meng School of Automation Engineering University of Electronic Science and Technology of ChinaChengdu 611731China Institute of Electric Vehicle Driving System and Safety Technology University of Electronic Science and Technology of ChinaChengdu 611731China School of Electrical Engineering and Electronic Information Xihua UniversityChengdu 610039China

This paper studies a finite-time adaptive fractionalorder fault-tolerant control(FTC)scheme for the slave position tracking of the teleoperating cyber physical system(TCPS)with external disturbances and actuator *** on the fractional Lyapunov stability theory and the finite-time stability theory,a fractional-order nonsingular fast terminal sliding mode(FONFTSM)control law is proposed to promote the tracking and fault tolerance performance of the considered ***,the adaptive fractional-order update laws are designed to cope with the unknown upper bounds of the unknown actuator faults and external ***,the finite-time stability of the closed-loop system is ***,comparison simulation results are also provided to show the validity and the advantages of the proposed techniques.

关键词： teleoperating cyber physical system(TCPS) fractional Lyapunov stability fault-tolerant control(FTC) finite-time stability

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Many-Objective Optimization-Based Task Scheduling in Hybrid Cloud Environments

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Computer Modeling in engineering & sciences 2023年第9期136卷 2425-2450页

作者： Mengkai Zhao Zhixia Zhang Tian Fan Wanwan Guo Zhihua Cui The School of Computer Science and Technology Taiyuan University of Science and TechnologyTaiyuan030024China The School of Electronic Information Engineering Taiyuan University of Science and TechnologyTaiyuan030024China

Due to the security and scalability features of hybrid cloud architecture,it can bettermeet the diverse requirements of users for cloud *** a reasonable resource allocation solution is the key to adequately utilize the hybrid ***,most previous studies have not comprehensively optimized the performance of hybrid cloud task scheduling,even ignoring the conflicts between its security privacy features and other *** on the above problems,a many-objective hybrid cloud task scheduling optimization model(HCTSO)is constructed combining risk rate,resource utilization,total cost,and task completion ***,an opposition-based learning knee point-driven many-objective evolutionary algorithm(OBL-KnEA)is proposed to improve the performance of model *** algorithm uses opposition-based learning to generate initial populations for faster ***,a perturbation-based multipoint crossover operator and a dynamic range mutation operator are designed to extend the search *** comparing the experiments with other excellent algorithms on HCTSO,OBL-KnEA achieves excellent results in terms of evaluation metrics,initial populations,and model optimization effects.

关键词： Hybrid cloud environment task scheduling many-objective optimization model many-objective optimization algorithm

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Volatile Additive Assists Binary Layer-by-Layer Solution Processing Organic Solar Cells to Achieve 19%Efficiency

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Chinese Journal of Chemistry 2024年第24期42卷 3581-3587页

作者： Luye Cao Hengyuan Zhang Xiaoyang Du Xinrui Li Hui Lin Gang Yang Caijun Zheng Silu Tao Yangtze Delta Region Institute(Huzhou)& School of Optoelectronic Science and Engineering University of Electronic Science and Technology of ChinaHuzhouZhejiang 313001China School of Electrical Engineering and Electronic Information Xihua UniversityChengduXichuan 610039China

Layer-by-layer(LbL)solution processing is an efficient method to realize high performance organic solar cells(OSCs).One of the drawbacks of the LbL-processed active layer is the large difference in the crystallinity of the donor and acceptor,which will lead to imbalance charge transfer and result in unfavorable charge ***,we combined a novel volatile additive 3,5-dichloro-2,4,6-trifluorobenzotrifluoride(DTBF)with the LbL method to realize high-efficiency *** interacts with the non-fullerene acceptor BTP-4F by non-covalent bonding,which enhances the crystallinity and compact stacking of *** doped OSC has balanced and efficient electron transport properties,longer carrier lifetime,higher exciton dissociation and charge collection efficiencies,lower energetic disorder than the control OSC without any *** from the optimization of charge dynamics and micro-morphology by DTBF,the binary LbL-processed OSC achieved synergistic improvements in open-circuit voltage,short-circuit current density and fill *** a result,a champion power conversion efficiency(PCE)of 19%is realized for DTBF-optimized OSC,which is superior to the control OSC(17.55%).This work demonstrates a promising approach to modulate active layer morphology and fabricate high performance OSCs.

关键词： Volatile additive Layer-by-layer processing Organic solar cells Electron transport Semiconductors NMR spectroscopy

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An Efficient and Fast Area Optimization Approach for Mixed Polarity Reed-Muller Logic Circuits

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Chinese Journal of electronics 2024年第5期33卷 1165-1180页

作者： Yuhao ZHOU Zhenxue HE Jianhui JIANG Xiaojun ZHAO Fan ZHANG Limin XIAO Xiang WANG School of Software Engineering Tongji University Key Laboratory of Agricultural Big Data of Hebei Province Hebei Agricultural University School of Computer Science and Engineering Beihang University School of Electronic and Information Engineering Beihang University

Area has become one of the main bottlenecks restricting the development of integrated circuits. The area optimization approaches of existing XNOR/OR-based mixed polarity Reed-Muller(MPRM) circuits have poor optimization effect and efficiency. Given that the area optimization of MPRM logic circuits is a combinatorial optimization problem, we propose a whole annealing adaptive bacterial foraging algorithm(WAA-BFA), which includes individual evolution based on Markov chain and Metropolis acceptance criteria, and individual mutation based on adaptive probability. To address the issue of low conversion efficiency in existing polarity conversion approaches, we introduce a fast polarity conversion algorithm(FPCA). Moreover, we present an MPRM circuits area optimization approach that uses the FPCA and WAA-BFA to search for the best polarity corresponding to the minimum circuits area. Experimental results demonstrate that the proposed MPRM circuits area optimization approach is effective and can be used as a promising EDA tool.

关键词： Integrated circuits Microorganisms Annealing Logic circuits Circuits Benchmark testing Delays

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Event-Based Affine Formation Maneuver Control for Multi-ASV Systems With Input Saturation

IEEE Transactions on Intelligent Vehicles

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IEEE Transactions on Intelligent Vehicles 2024年 1-11页

作者： Zhang, Dingze Yang, Yue Liu, Kezhong Li, Tieshan School of Information Engineering Wuhan University of Technology Wuhan China School of Navigation Wuhan University of Technology Wuhan China School of Automation Engineering University of Electronic Science and Technology of China Chengdu China

This research investigates the problem of eventbased affine formation maneuver control for multi-Autonomous Surface Vehicle (ASV) systems. To date, most studies of ASV formation have only focused on static formation configuration. However, in practical applications, ASVs need to change formation maneuvering to accomplish various tasks, such as obstacle avoidance and maritime patrol. Addition, multi-ASV systems are constrained by environmental disturbances, limited communication resources, and input saturation. To deal with these constraints, a novel formation maneuver control strategy for multi-ASV systems is proposed. First, to achieve formation maneuvering in multi-ASV systems, an affine formation maneuver controller based on a stress matrix is designed. Second, radial basis function neural networks are deployed to reduce the influence of nonlinear term on multi-ASV systems. An event-triggered mechanism is used to decrease the frequency of information transmission, thereby conserving communication resources. Finally, the stability and the Zeno behavior of the system are analyzed. The simulation demonstrates that the control strategy proposed in this research enables multi-ASV systems to complete formation maneuver tasks. IEEE

关键词： Radial basis function networks

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Dual-band and high-isolation shared-aperture antenna for broadband airborne applications

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Journal of electronic science and technology 2024年第4期22卷 9-18页

作者： Yuan Zhang Dong-Jun Wang Chuan Wu Qiang-Ming Cai Run-Ren Zhang Rong-Qiang Li Peng Gao Yan-Wen Zhao School of Electronic Science and Engineering University of Electronic Science and Technology of ChinaChengdu611731China AVIC Chengdu Aircraft Industrial(Group)Co. Ltd.Chengdu610091China Electronic Engineering College Chengdu University of Information TechnologyChengdu610225China School of Information Engineering Southwest University of Science and TechnologyMianyang621010China Department of Electrical and Computer Engineering Duke UniversityDurhamNC 27708USA

A dual-band and high-isolation shared-aperture antenna for unmanned aerial vehicle(UAV)platforms has been *** shared-aperture antenna consists of a rectangular monopole antenna and a 4-element multiple input multiple output(MIMO)*** order to increase the isolation,several double split ring metamaterial(MTM)structures are introduced between antenna *** antenna radiator and the MTM structure are located on the front and back of the same dielectric substrate,respectively,and are perpendicular to a circular metal *** overall size of the antenna substrate is 124 mm×38 mm×1.016 ***,the antenna prototype is constructed and measured,and the simulated and measured results are in good *** measured results show that the-10 dB bandwidth of the monopole antenna is 1.92 GHz to 2.75 GHz,and the common-6.0 dB bandwidth of the MIMO antenna element is 4.75 GHz to 4.91 GHz,covering 2.2 GHz to 2.4 GHz in the S-band and 4.8 GHz to 4.9 GHz in the 5G band,*** the 5G band,the isolation between any element of the MIMO antenna and the S-band monopole antenna is not less than 21 dB,and the isolation between the MIMO antenna elements is better than 23 dB,indicating t-hat the isolation between the antenna elements is *** proposed antenna is suitable for the application on UAV airborne platforms.

关键词： Dual-band antenna High-isolation Monopole antenna Multiple input multiple output(MIMO) Shared-aperture Unmanned aerial vehicle(UAV)

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A Blockchain-Based Efficient Cross-Domain Authentication Scheme for Internet of Vehicles

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Computers, Materials & Continua 2024年第7期80卷 567-585页

作者： Feng Zhao Hongtao Ding Chunhai Li Zhaoyu Su Guoling Liang Changsong Yang Guangxi Engineering Research Center of Industrial Internet Security and Blockchain Guilin University of Electronic TechnologyGuilin541004China School of Information and Communication Guilin University of Electronic TechnologyGuilin541004China School of Computer Science and Information Security Guilin University of Electronic TechnologyGuilin541004China

The Internet of Vehicles(IoV)is extensively deployed in outdoor and open environments to effectively address traffic efficiency and safety issues by connecting vehicles to the ***,due to the open and variable nature of its network topology,vehicles frequently engage in cross-domain *** such processes,directly uploading sensitive information to roadside units for interaction may expose it to malicious tampering or interception by attackers,thus compromising the security of the cross-domain authentication ***,IoV imposes high real-time requirements,and existing cross-domain authentication schemes for IoV often encounter efficiency *** mitigate these challenges,we propose CAIoV,a blockchain-based efficient cross-domain authentication scheme for *** scheme comprehensively integrates technologies such as zero-knowledge proofs,smart contracts,and Merkle hash tree *** divides the cross-domain process into anonymous cross-domain authentication and safe cross-domain authentication phases to ensure efficiency while maintaining a balance between efficiency and ***,we evaluate the performance of *** results demonstrate that our proposed scheme reduces computational overhead by approximately 20%,communication overhead by around 10%,and storage overhead by nearly 30%.

关键词： Blockchain cross-domain authentication internet of vehicle zero-knowledge proof

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Fair and Communication-Efficient Personalized Federated Learning 18th

Fair and Communication-Efficient Personalized Federated Lea...

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18th International Conference on Wireless Artificial Intelligent Computing Systems and Applications, WASA 2024

作者： Zheng, Yifu Zheng, Xu Wang, Tingqi Mu, Chong Zhakiyev, Nurkhat School of Computer Science and Engineering University of Electronic Science and Technology of China Chengdu China School of Information and Software Engineering University of Electronic Science and Technology of China Chengdu China Department of Science and Innovation Astana IT University Astana Kazakhstan

ISBN: (纸本)9783031714665

Personalized Federated Learning (pFL) is among the most popular tasks in distributed deep learning, which compensates for mutual knowledge and enables device-specific model personalization. However, the effectiveness of pFL is severely impeded by challenges on fairness and significant communication overhead, where devices holding essential samples have to devote extensive resources for model training. To address these issues, we introduce the Fair and Communication-Efficient Personalized Federated Learning (FCE-PFL) framework, which harmonizes performance and device fairness while maintaining communication costs. Based on the Dempster-Shafer Theory, FCE-PFL employs assistance and contribution metrics to quantify the auxiliary information a client receives and provides. Then FCE-PFL balances and adjusts the involvement of devices in each training iteration, so as to facilitate fair training by constraining the maximum resource consumption per device and reduce the overall communication overhead. Our framework has been proven to be superior to existing methods in accuracy through rigorous experiments on the CIFAR10 and CIFAR100 datasets, demonstrating its potential as a fair and efficient pFL solution. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2025.

关键词： Federated learning

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