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An improved interval model updating method via adaptive Kriging models

Applied Mathematics and Mechanics(English Edition) 2024年第3期45卷 497-514页

作者： Sha WEI Yifeng chen Hu DING Liqun chen Shanghai Key Laboratory of Mechanics in Energy Engineering Shanghai Frontier Science Center of MechanoinformaticsShanghai Institute of Applied Mathematics and MechanicsSchool of Mechanics and Engineering ScienceShanghai UniversityShanghai 200072China Shanghai Institute of Aircraft Mechanics and Control Shanghai 200092China

Interval model updating(IMU)methods have been widely used in uncertain model updating due to their low requirements for sample ***,the surrogate model in IMU methods mostly adopts the one-time construction *** makes the accuracy of the surrogate model highly dependent on the experience of users and affects the accuracy of IMU ***,an improved IMU method via the adaptive Kriging models is *** method transforms the objective function of the IMU problem into two deterministic global optimization problems about the upper bound and the interval diameter through universal grey *** optimization problems are addressed through the adaptive Kriging models and the particle swarm optimization(PSO)method to quantify the uncertain parameters,and the IMU is *** the construction of these adaptive Kriging models,the sample space is gridded according to sensitivity *** sampling is then performed in key subspaces based on the maximum mean square error(MMSE)*** interval division coefficient and random sampling coefficient are adaptively adjusted without human interference until the model meets accuracy *** effectiveness of the proposed method is demonstrated by a numerical example of a three-degree-of-freedom mass-spring system and an experimental example of a butted cylindrical *** results show that the updated results of the interval model are in good agreement with the experimental results.

关键词： interval model updating(IMU) non-probabilistic uncertainty adaptive Kriging model surrogate model grey number

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景观保护设计--美国佛罗里达州西南部景观保护设计项目案例

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中国园林 2020年第2期36卷 70-75页

作者：祝明建吴莹尚媛陈风名孙源华南理工大学设计学院广州510006 北京大学建筑与景观设计学院北京100871 北京交通大学建筑与艺术学院北京100089

景观保护设计(Landscape Conservation Design,LCD)是一种动态性的景观保护方法。该方法以保护生物学和景观生态学的原理为基础,运用GIS技术和空间保护规划软件,识别出场地中对物种、生物多样性和生态系统保护具有关键意义的区域和廊道... 详细信息

景观保护设计(Landscape Conservation Design,LCD)是一种动态性的景观保护方法。该方法以保护生物学和景观生态学的原理为基础,运用GIS技术和空间保护规划软件,识别出场地中对物种、生物多样性和生态系统保护具有关键意义的区域和廊道。LCD的结果可以为自然资源和生态保护的决策者提供基于科学的空间保护策略依据。在中国越来越重视自然资源和生态环境保护的今天,在未来城市的建设中,景观保护设计的概念和方法将对我国的自然资源和生态保护规划起到重要的借鉴作用。以美国渔业和野生动物保护局(U.S Fish&Wildlife Conservation Service,USFWS)与佛罗里达大学景观保护规划中心合作完成的佛罗里达州西南部景观保护设计项目为例,从数据基础、研究方法以及规划结果等方面来对景观保护设计进行探讨,并提出景观保护设计理念在我国生物多样性保护及生态文明建设中的应用前景和挑战。

关键词：风景园林景观保护设计生物多样性保护规划决策启示

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An ionic liquid-assisted strategy for enhanced anticorrosion of low-energy PEO coatings on magnesium–lithium alloy

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Journal of Magnesium and Alloys 2024年第6期12卷 2380-2396页

作者： You Zhang Chuping chen Haoyue Tian Shuqi Wang chen Wen Fei chen College of New Materials and Chemical Engineering Hydrogen Energy Research CentreBeijing Institute of Petrochemical TechnologyBeijing 102617China Key Laboratory of Advanced Structure-Function Integrated Materials and Green Manufacturing Technology Harbin Institute of TechnologyHarbin 150001China Beijing Spacecrafts China Academy of Space TechnologyBeijing 100190China

A low-energy plasma electrolytic oxidation(LePEO)technique is developed to simultaneously improve energy efficiency and *** liquids(1-butyl-3-methylimidazole tetrafluoroborate(BmimBF_(4)))as sustainable corrosion inhibitors are chosen to investigate the corrosion inhibition behavior of ionic liquid(ILs)during the LePEO process for LA91 magnesium-lithium(Mg-Li)*** show that the ionic liquid BmimBF_(4)participates in the LePEO coating formation process,causing an increment in coating thickness and surface *** low conductivity of the ionic liquid is responsible for the voltage and breakdown voltage increases during the LePEO with IL process(LePEO-IL).After adding BmimBF_(4),corrosion current density decreases from 1.159×10^(−4)A·cm^(−2)to 8.143×10^(−6)A·cm^(−2).The impedance modulus increases to 1.048×10^(4)Ω·cm^(−2)and neutral salt spray remains intact for 24 *** superior corrosion resistance of the LePEO coating assisted by ionic liquid could be mainly attributed to its compact and thick barrier layer and physical absorption of ionic *** ionic liquid-assisted LePEO technique provides a promising approach to reducing energy consumption and improving film performance.

关键词： Magnesium-lithium alloy Plasma electrolytic oxidation Low energy Ionic liquid Corrosion resistance

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Mn-doped LiFePO_(4)@C as a high-performance cathode material for lithium-ion batteries

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Particuology 2024年第7期90卷 418-428页

作者： Wenjing chen Fangxiang Song Yumei Yang Qianlin chen School of Chemistry and Chemical Engineering Guizhou UniversityGuiyang550025China Collaborative Innovation Center of Guizhou Province for Efficient Utilization of Phosphorus and Fluorine Resources Guizhou UniversityGuiyang550025China

In this work,LiFe_(1-x)MnxPO_(4)@C(x=0,0.01,0.02,0.03)cathode materials were obtained by a simple co-precipitation method and heat treatment,and the influence of Mn-doped modification on the electrochemical performance of LiFePO_(4)@C cathode materials was *** show that by doping an appropriate amount of Mn,the cell volume became larger,and the electronic conductivity increased,which improved the Li+diffusion rate and thus its rate capability and cycle performance of Li-ion *** them,LiFe_(0.98)Mn_(0.02)PO_(4)@C showed superior lithium storage capability;the discharge capacity can reach 150.7 mAh g^(−1)at 0.1 *** cell could discharge up to 155.9 mAh g^(−1)at 1 C under high temperature at 45°C,which was higher than LiFePO_(4)@C(142 mAh g^(−1))under the same test *** discharge capacity of 1 C at room temperature was 139.9 mAh g^(−1),and the cycle stability was 95.9%after 200 *** showed that it had good rate capability and excellent cycle *** results indicate that Mn-doped LFP is a simple and effective strategy for developing high-performance cathode materials.

关键词： Mn-doped LiFePO_(4) Lithium-ion battery High temperature

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Vickrey-Clark-Groves-based Method for Eradicating Deceptive Behaviors in Demand Response Transactions

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Journal of Modern Power Systems and Clean Energy 2024年第4期12卷 1260-1271页

作者： Yingjun Wu chengjun Liu Zhiwei Lin Zhaorui chen Runrun chen Yuyang chen College of Energy and Electrical Engineering Hohai UniversityNanjingChina

Demand response transactions between electric con-sumers,load aggregators,and the distribution network manag-er based on the"combination of price and incentive"are feasi-ble and ***,the incentive payment of demand re-sponse is quantified based on private information,which gives the electric consumers and load aggregators the possibility of defrauding illegitimate interests by declaring false *** paper proposes a method based on Vickrey-Clark-Groves(VCG)theory to prevent electric consumers and load aggrega-tors from taking illegitimate interests through deceptive behav-iors in the demand response ***,a demand re-sponse transaction framework with the price-and-incentive com-bined mode is established to illustrate the deceptive behaviors in the demand response ***,the idea for eradi-cating deceptive behaviors based on VCG theory is given,and a detailed VCG-based mathematical model is constructed follow-ing the demand response transaction ***,the proofs of incentive compatibility,individual rationality,cost minimization,and budget balance of the proposed VCG-based method are ***,a modified IEEE 33-node system and a modified IEEE 123-node system are used to illustrate and val-idate the proposed method.

关键词： Demand response transaction incentive mode cost-sharing false information deceptive behavior

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Recent advances in fabrication and functions of neuromorphic system based on organic field effect transistor

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International Journal of Extreme Manufacturing 2024年第2期6卷 273-295页

作者： Yaqian Liu Minrui Lian Wei chen Huipeng chen School of Physics and Electronic Engineering Zhengzhou University of Light IndustryHenan 450002People’s Republic of China Institute of Optoelectronic Display National&Local United Engineering Lab of Flat Panel Display TechnologyFuzhou UniversityFuzhou 350002People’s Republic of China Joint School of National University of Singapore and Tianjin University International Campus of Tianjin UniversityFuzhou 350207People’s Republic of China Department of Chemistry National University of Singapore3 Science Drive 3Singapore 117543Singapore Department of Physics National University of Singapore3 Science Drive 3Singapore 117543Singapore

The development of various artificial electronics and machines would explosively increase the amount of information and data,which need to be processed via in-situ *** synapse devices can store and process signals in a parallel way,thus improving fault tolerance and decreasing the power consumption of artificial *** organic field effect transistor(OFET)is a promising component for bioinspired neuromorphic systems because it is suitable for large-scale integrated circuits and flexible *** this review,the organic semiconductor materials,structures and fabrication,and different artificial sensory perception systems functions based on neuromorphic OFET devices are ***,a summary and challenges of neuromorphic OFET devices are *** review presents a detailed introduction to the recent progress of neuromorphic OFET devices from semiconductor materials to perception systems,which would serve as a reference for the development of neuromorphic systems in future bioinspired electronics.

关键词： organic field effect transistor neuromorphic systems synaptic transistor sensory perception systems device fabrication

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Bacterial microcompartment-mimicking Pickering emulsion droplets for detoxification of chemical threats under sweet conditions

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Science China Chemistry 2024年第9期67卷 3039-3049页

作者： Xiao Xu Wenqi Xie Ting Wu chen chen Xiaoning chen Yuheng Yang Hao Lian Hao chen Xiaofeng cheng Zhitong chen Guojun chen Chaoqun Liu Lanlan chen Yu He Zhaowei chen Bernard P.Binks Huanghao Yang New Cornerstone Science Laboratory MOE Key Laboratory for Analytical Science of Food Safety and BiologyCollege of ChemistryFuzhou UniversityFuzhou 350002China Institute of Biomedical and Health Engineering Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055China Department of Biomedical Engineering and the Rosalind&Morris Goodman Cancer Research Institute McGill UniversityMontreal QC H3A 1A3Canada School of Pharmacy Henan UniversityKaifeng 475004China Department of Chemistry University of HullHull HU67RXUK

Chemical warfare agents represent a severe threat to mankind and their efficient decontamination is a global ***,traditional disposal strategies have limitations,including high energy consumption,use of aggressive reagents and generation of toxic ***,inspired by the compartmentalized architecture and detoxification mechanism of bacterial microcompartments,we constructed oil-in-water Pickering emulsion droplets stabilized by hydrogen-bonded organic framework immobilized cascade enzymes for decontaminating mustard gas simulant(2-chloroethyl ethyl sulfide,CEES)under sweet *** exemplified droplet systems were developed with two-enzyme(glucose oxidase/chloroperoxidase)and threeenzyme(invertase/glucose oxidase/chloroperoxidase)cascades,both achieving over 6-fold enhancement in decontamination efficiency compared with free enzymes and>99% selectivity towards non-toxic *** found that the favored mass transfer of sugars and CEES from their respective phases to approach the cascade enzymes located at the droplet surface and the facilitated substrate channeling between proximally immobilized enzymes were key factors in augmenting the decontamination *** importantly,the robustness of immobilized enzymes enabled easy reproduction of both the droplet formation and detoxification performance over 10 cycles,following long-term storage and in far-field locations.

关键词： Pickering emulsion biomimetics chemical warfare agent bacterial microcompartment biocatalysis

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机电一体化数控技术在机械加工中的应用研究

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现代制造技术与装备 2021年第3期57卷 196-197页

作者：陈风明赵光霞镇江高等专科学校镇江212028 镇江高等职业技术学校镇江212016

随着我国信息技术水平的不断进步,机电一体化为我国机械加工行业的发展提供了支持,有效提高了机械加工的质量和效率。基于此,围绕机电一体化数控技术在机械加工中的应用展开探讨和分析,以期能够为我国数控技术在机械加工技术中的应用提... 详细信息

随着我国信息技术水平的不断进步,机电一体化为我国机械加工行业的发展提供了支持,有效提高了机械加工的质量和效率。基于此,围绕机电一体化数控技术在机械加工中的应用展开探讨和分析,以期能够为我国数控技术在机械加工技术中的应用提供参考。

关键词：机电一体化数控技术机械加工技术

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Fe-N_(x) sites coupled with core-shell FeS@C nanoparticles to boost the oxygen catalysis for rechargeable Zn-air batteries

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Journal of Energy Chemistry 2024年第3期90卷 565-577,I0013页

作者： Katam Srinivas Zhuo chen Anran chen Fei Ma Ming-qiang Zhu Yuanfu chen School of Integrated Circuit Science and Engineering and State Key Laboratory of Electronic Thin Films and Integrated DevicesUniversity of Electronic Science and Technology of ChinaChengdu 610054SichuanChina College of Mechanical and Electronic Engineering Northwest A&F UniversityYangling 712100ShaanxiChina School of Materials and Energy Yunnan UniversityKunming 650091YunnanChina

The development of efficient single-atom catalysts(SACs) for the oxygen reduction reaction(ORR)remains a formidable challenge,primarily due to the symmetric charge distribution of metal singleatom sites(M-N_(4)).To address such issue,herein,Fe-N_(x) sites coupled synergistic catalysts fabrication strategy is presented to break the uniform electronic distribution,thus enhancing the intrinsic catalytic ***,atomically dispersed Fe-N_(x) sites supported on N/S-doped mesoporous carbon(NSC)coupled with FeS@C core-shell nanoparticles(FAS-NSC@950) is synthesized by a facile hydrothermal reaction and subsequent *** to the presence of an in situ-grown conductive graphitic layer(shell),the FeS nanoparticles(core) effectively adjust the electronic structure of single-atom Fe sites and facilitate the ORR kinetics via short/long-range coupling ***,FAS-NSC@950displays a more positive half-wave potential(E_(1/2)) of 0.871 V with a significantly boosted ORR kinetics(Tafel slope=52.2 mV dec^(-1)),outpacing the commercial Pt/C(E_(1/2)=0.84 V and Tafel slope=54.6 mV dec^(-1)).As a bifunctional electrocatalyst,it displays a smaller bifunctional activity parameter(ΔE) of 0.673 V,surpassing the Pt/C-RuO_(2) combination(ΔE=0.724 V).Besides,the FAS-NSC@950-based zincair battery(ZAB) displays superior power density,specific capacity,and long-term cycling performance to the Pt/C-Ir/C-based *** work significantly contributes to the field by offering a promising strategy to enhance the catalytic activity of SACs for ORR,with potential implications for energy conversion and storage technologies.

关键词： Fe-N_(x)sites Core-shell FeS@C Synergistic interactions Oxygen reduction reaction Zn-air battery

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Global intensification of weak tropical cyclones in the past 30 years

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Science China Earth Sciences 2024年第2期67卷 639-640页

作者： Dake chen State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai 519000Chin

The response of tropical cyclones(TCs)to climate change is a hot topic in ocean and atmosphere *** theoretical analysis and numerical experiments indicated that the intensity of TCs may increase with global warming(Emanuel,1987;Knutson and Tuleya,2004),which however has not been convincingly validated by presently available observations(Landsea,2005;Pielke,2005).Using a huge amount of global ocean surface drifter data,Wang et al.

关键词： tropical ocean cyclones

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