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Green Energy and Intelligent Transportation 2024年第1期3卷 46-54页

作者： Kui chen Jiali Li Kai Liu Changshan Bai Jiamin Zhu Guoqiang Gao Guangning Wu Salah Laghrouche School of Electrical Engineering Southwest Jiaotong UniversityChengdu611756China FEMTO-ST UMR CNRS 6174and FCLABFR CNRS 3539UniversitéBourgogne Franche-ComtéBelfortUTBM90000France

Lithium-ion battery State of Health(SOH)estimation is an essential issue in battery management *** order to better estimate battery SOH,Extreme Learning Machine(ELM)is used to establish a model to estimate lithium-ion battery *** Swarm Optimization algorithm(PSO)is used to automatically adjust and optimize the parameters of ELM to improve estimation ***,collect cyclic aging data of the battery and extract five characteristic quantities related to battery capacity from the battery charging curve and increment capacity *** Grey Relation Analysis(GRA)method to analyze the correlation between battery capacity and five characteristic ***,an ELM is used to build the capacity estimation model of the lithium-ion battery based on five characteristics,and a PSO is introduced to optimize the parameters of the capacity estimation *** proposed method is validated by the degradation experiment of the lithium-ion battery under different *** results show that the battery capacity estimation model based on ELM and PSO has better accuracy and stability in capacity estimation,and the average absolute percentage error is less than 1%.

关键词： Lithium-ion battery State of health estimation Grey relation analysis method Particle swarm optimization algorithm Extreme learning machine

Verifiable quantum secret sharing scheme based on orthogonal product states

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Chinese Physics B 2024年第7期33卷 178-187页

作者：白晨明刘璐张素娟 Department of Mathematics and Physics Shijiazhuang Tiedao UniversityShijiazhuang 050043China

In the domain of quantum cryptography,the implementation of quantum secret sharing stands as a pivotal *** this paper,we propose a novel verifiable quantum secret sharing protocol using the d-dimensional product state and Lagrange interpolation *** protocol is initiated by the dealer Alice,who initially prepares a quantum product state,selected from a predefined set of orthogonal product states within the C~d■C~d ***,the participants execute unitary operations on this product state to recover the underlying ***,we subject the protocol to a rigorous security analysis,considering both eavesdropping attacks and potential dishonesty from the ***,we conduct a comparative analysis of our protocol against existing *** scheme exhibits economies of scale by exclusively employing quantum product states,thereby realizing significant cost-efficiency *** terms of access structure,we adopt a(t, n)-threshold architecture,a strategic choice that augments the protocol's practicality and suitability for diverse ***,our protocol includes a rigorous integrity verification mechanism to ensure the honesty and reliability of the participants throughout the execution of the protocol.

关键词： quantum secret sharing quantum product state threshold scheme unitary operations

Design and Research of an Intelligent Learning System for University Physics

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Journal of Contemporary Educational Research 2024年第7期8卷 95-99页

作者： Lin chen Leyu College Zhuhai CampusBeijing Normal UniversityZhuhai 519000Guangdong ProvinceChina

In order to break through the limitations of traditional teaching,realize the integration of online and offline teaching,and optimize the intelligent learning experience of university physics,this paper proposes the design of an intelligent learning system for university physics based on cloud computing platforms,and applies this system to teaching environment of university *** successfully integrates emerging technologies such as cloud computing,machine learning,and situational awareness,integrates learning context awareness,intelligent recording and broadcasting,resource sharing,learning performance prediction,and content planning and recommendation,and comprehensively improves the quality of university physics *** can optimize the teaching process and deepen intelligent teaching reform,aiming at providing references for the teaching practice of university physics.

关键词： University Physics Intelligent learning System design

Stable watt-level mode-locked noise-like pulse from an all-PM fiber oscillator at 2 μm

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Chinese Optics Letters 2024年第6期22卷 154-157页

作者： Meng Wang Junjia Ding Deqin Ouyang Yewang chen Junqing Zhao Xing Liu Shuangchen Ruan Key Laboratory of Advanced Optical Precision Manufacturing Technology of Guangdong Higher Education Institutes Sino-German College of Intelligent ManufacturingShenzhen Technology UniversityShenzhen 518118China

We have experimentally presented a watt-level noise-like (NL) pulse mode-locked all-polarization-maintaining(PM) fiber laser centered at ~1995 nm, which can directly generate stable NL pulses with a maximum output power of ~1.017 W and pulse energy of ~0.61 μJ, representing the highest output power of mode-locked NL pulse at 2 μm from any fiber oscillators,to the best of our knowledge. The mode-locked NL pulse laser exhibits an excellent stability with a power fluctuation of~0.1% in 8 h of monitoring, and a signal-to-noise ratio of ~83 dB at a fundamental frequency of ~1.662 MHz. Moreover, the pulse envelope and coherence spike width of the NL pulse can be widely tuned from ~4.5 ns to ~16 ns, and ~364 fs to~323 fs, respectively, with the enhancement of the pump power. Such an all-PM fiber oscillator is the ideal seed source for the implementation of a high-power NL pulse laser and has potential valuable applications in mid-infrared spectroscopy and industrial processing.

关键词： Tm-doped fiber laser mode locking noise-like pulse

Systems science in the new era: intelligent systems and big data

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Science China(Information Sciences) 2024年第3期67卷 308-310页

作者： Wenwu YU Duxin chen Hongzhe LIU He WANG Jinde CAO Zengru DI Xiaojun DUAN Bin JIA Xiaodong DING Yiguang HONG School of Mathematics Southeast University Purple Mountain Laboratories International Academic Center of Complex Systems Beijing Normal University College of Science National University of Defense Technology School of Systems Science Beijing Jiaotong University Business School University of Shanghai for Science and Technology Department of Control Science and Engineering Tongji University

This study introduces the emergence, research challenges,and future development of intelligent systems and big data(ISBD) and discusses the significance of ISBD to systems science. To this end, an overview of systems science is first presented, followed by the conclusion that the development of artificial intelligence(AI) has promoted the derivation and development of intelligent systems(ISs).

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Circulating Lipoproteins Mediate the Association Between Cardiovascular Risk Factors and Cognitive Decline:A Community‑Based Cohort Study

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Phenomics 2024年第1期4卷 51-55页

作者： Jialin Li Qingxia Huang Yingzhe Wang Mei Cui Kelin Xu chen Suo Zhenqiu Liu Yanpeng An Li Jin Huiru Tang Xingdong chen Yanfeng Jiang State Key Laboratory of Genetic Engineering Human Phenome InstituteZhangjiang Fudan International Innovation Centerand National Clinical Research Center for Aging and MedicineHuashan HospitalFudan University2005 Songhu RdShanghai 200438China Fudan University Taizhou Institute of Health Sciences Taizhou 225326China State Key Laboratory of Genetic Engineering School of Life SciencesMetabonomics and Systems Biology Laboratory at Shanghai International Centre for Molecular PhenomicsHuman Phenome InstituteZhongshan HospitalFudan University2005 Songhu RdShanghai 200438China Department of Neurology Huashan HospitalFudan UniversityShanghai 200040China Ministry of Education Key Laboratory of Public Health Safety Department of BiostatisticsSchool of Public HealthFudan UniversityShanghai 200032China Ministry of Education Key Laboratory of Public Health Safety Department of EpidemiologySchool of Public HealthFudan UniversityShanghai 200032China Shanghai Institute of Infectious Disease and Biosecurity Shanghai 200032China Yiwu Research Institute of Fudan University Yiwu 322000ZhejiangChina International Human Phenome Institute(Shanghai) Shanghai 201203China Greater Bay Area Institute of Precision Medicine(Guangzhou) Fudan UniversityGuangzhou 511462China

Cardiovascular health metrics are now widely recognized as modifable risk factors for cognitive decline and *** perturbations might play roles in the linkage of cardiovascular diseases and *** metabolites profling by metabolomics may improve understanding of the potential mechanism by which cardiovascular risk factors contribute to cognitive *** a prospective community-based cohort in China(n=725),312 serum metabolic phenotypes were quantifed,and cardiovascular health score was calculated including smoking,exercise,sleep,diet,body mass index,blood pressure,and blood *** function assessments were conducted in baseline and follow-up visits to identify longitudinal cognitive decline.A better cardiovascular health was signifcantly associated with lower risk of concentration decline and orientation decline(hazard ratio(HR):0.84–0.90;p<0.05).Apolipoprotein-A1,high-density lipoprotein(HDL)cholesterol,cholesterol ester,and phospholipid concentrations were signifcantly associated with a lower risk of longitudinal memory and orientation decline(p<0.05 and adjusted-p<0.20).Mediation analysis suggested that the negative association between health status and the risk of orientation decline was partly mediated by cholesterol ester and total lipids in HDL-2 and-3(proportion of mediation:7.68–8.21%,both p<0.05).Cardiovascular risk factors were associated with greater risks of cognitive decline,which were found to be mediated by circulating lipoproteins,particularly the medium-size HDL *** fndings underscore the potential of utilizing lipoproteins as targets for early stage dementia screening and intervention.

关键词： Cardiovascular risk factors Lipoproteins Lipids Cognition Cognitive decline

The Aesthetic Characteristics of Emotional Abuse in The Japanese Movie“0.5mm”

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Journal of Literature and Art Studies 2024年第6期14卷 455-461页

作者： chen Shao-ping College of Literature and Media Zhaoqing UniversityZhaoqingGuangdongChina

The Japanese movie“0.5mm”connects the life clips between the nursing-care helper Sawa and several old people in the form of a road movie,highlighting many thought-provoking social problems,and revealing how the elements of emotional abuse hidden between the old people and their relatives and friends affect people’s dignity and decency,and at the same time trying to offset the persecution from the emotional abuse with the warm kindness between the elderly and the care *** film’s implicit description of emotional abuse and explicit display of good deeds are blended in the quiet and mysterious narrative character,achieving the effect of synchronizing the artistic narrative rhythm with the flow of life,reflecting the unique aesthetic characteristics of Japanese films.

关键词： “0.5mm” emotional abuse aesthetic characteristics

Cost-efficient quantum access network boosts practical deployment of quantum key distribution network

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Science China(Physics,Mechanics & Astronomy) 2024年第4期67卷 169-169页

作者： Hua-Lei Yin Zeng-Bing chen Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials and Micro-nano Devices Key Laboratory of Quantum State Construction and Manipulation(Ministry of Education)Renmin University of ChinaBeijing 100872China National Laboratory of Solid State Microstructures and School of Physics Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093China

The security of information is not assured over extended periods,especially with the rapid advancement of quantum *** address this challenge,quantum cryptography,rooted in quantum physics,offers comprehensive toolkits for key distribution[1],secret sharing[2],digital signatures[3]and other cryptographic tasks[4]with information-theoretical *** feasibility of quantum cryptography,particularly quantum key distribution(QKD)。

关键词： quantum distribution signature

Fast prediction method of full-space bistatic scattering sound field of underwater stiffened double cylindrical shell

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Chinese Journal of Acoustics 2024年第2期43卷 155-172页

作者： chen Changxiong PENG Zilong SONG Hao FAN Jun XUE Yaqiang School of Energy and Power Engineering Jiangsu University of Science and TechnologyZhenjiang 212100 Systems Engineering Research Institute Beijing100094 State Key Laboratory of Ocean Engineering Shanghai Jiao Tong UniversityShanghai 200240

A fast prediction method is presented for the full-space bistatic scattering sound field of the underwater stiffened double cylindrical shell. The scattering sound field is represented as the product of the acoustic scattering transfer function and the sound source density function. The target surface grid information and a small amount of simulation or experimentation multistatic scattering sound pressure data are used as known information to forecast other bistatic scattering sound fields with the help of numerical integration, matrix theory, and least squares method. The scattered sound pressure data from simulation of the finite element method(FEM) and experimental tests are used as input to calculate the multistatic scattered sound field of the underwater stiffened double cylindrical shell, respectively. The calculated results are compared with those calculated exclusively by the FEM, and the effects of different input data and calculation frequencies on the calculation results are discussed. The results show that the proposed method can predict the full-space bistatic scattered sound field of the target when the surface structure and part of the scattered sound field data are known. The greater amount of known scattered sound pressure data and lower computational frequency lead to higher predicted accuracy.

关键词： sound scattering cylindrical

A Pricing-Based Cooperative Relay Selection Scheme for Reliable Communications

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China Communications 2024年第8期21卷 30-44页

作者： Xiao Yulong Wu Yu Amr Tolba chen Ziqiang Li Tengfei School of Communications and Information Engineering Chongqing University of Posts and TelecommunicationsChongqing 400065China School of Cyber Security and Information Law Chongqing University of Posts and TelecommunicationsChongqing 400065China Department of Computer Science Community CollegeKing Saud UniversityRiyadh 11437Saudi Arabia

With the rapid development and application of energy harvesting technology,it has become a prominent research area due to its significant benefits in terms of green environmental protection,convenience,and high safety and ***,the uneven energy collection and consumption among IoT devices at varying distances may lead to resource imbalance within energy harvesting networks,thereby resulting in low energy transmission *** enhance the energy transmission efficiency of IoT devices in energy harvesting,this paper focuses on the utilization of collaborative communication,along with pricing-based incentive mechanisms and auction *** propose a dynamic relay selection scheme,including a ladder pricing mechanism based on energy level and a Kuhn-Munkre Algorithm based on an auction theory employing a negotiation mechanism,to encourage more IoT devices to participate in the collaboration *** results demonstrate that the proposed algorithm outperforms traditional algorithms in terms of improving the energy efficiency of the system.

关键词： cooperative communication edge net-work energy harvesting relay selection