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复杂地质下隧道施工风险评价模型及系统开发

公路交通科技 2023年第6期40卷 174-181页

作者：徐淑亮中铁十四局集团有限公司山东济南250101

隧道施工过程中经常会遇到一些灾害问题,由于影响其发生的因子众多,且极具复杂性和模糊性,很难对隧道建设施工过程中的风险问题进行准确的评估。基于此,建立了复杂地质条件下隧道施工风险评价指标体系,然后将模糊数学理论和专家系统相... 详细信息

隧道施工过程中经常会遇到一些灾害问题,由于影响其发生的因子众多,且极具复杂性和模糊性,很难对隧道建设施工过程中的风险问题进行准确的评估。基于此,建立了复杂地质条件下隧道施工风险评价指标体系,然后将模糊数学理论和专家系统相结合建立了新的风险评价模型,提出了一种基于模糊数学的专家系统评价模型和层次分析法(AHP)的隧道施工风险评价方法。首先,在综合分析复杂地质条件下隧道施工风险影响因素的基础上,选取能充分反映工程地质情况和施工测量情况的5个因素,确立了包含1个目标、2类准则及5项指标的隧道施工风险因素,构建了隧道施工风险评价指标体系,并通过将标准遗传算法(GA)与AHP法相结合(GA-AHP)的办法,确定了各评价指标的权重。其次,采用模糊数学法建立了各评价指标的隶属函数,并结合专家系统方法,将其与模糊数学分析法结合,根据施工风险评价的需求,提出了复杂地质条件下隧道施工风险评价系统的结构模块,依托JAVA语言开发了基于模糊数学方法的隧道施工安全风险评估与管理专家系统。最后,以某新建高速公路隧道工程为例,对所开发的系统进行了验证,所得评价结果与工程实际情况一致,该决策系统具有有效性。

关键词：隧道工程专家系统遗传层次分析法隧道施工安全模糊数学

Co-doped cryptomelane-type manganese oxide in situ grown on a nickel foam substrate for high humidity ozone decomposition

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Journal of Environmental Sciences 2025年第2期148卷 529-540页

作者： Haoyuan liang xu Wang Hui Wang Zhenping Qu Key Laboratory of Industrial Ecology and Environmental Engineering School of Environmental Science and TechnologyDalian University of TechnologyDalian 116024China

Monolithic catalysts with excellent O_(3)catalytic decomposition performance were prepared by in situ loading of Co-doped KMn_(8)O_(16)on the surface of nickel *** triple-layer structure with Co-doped KMn_(8)O_(16)/Ni6MnO_(8)/Ni foam was grown spontaneously on the surface of nickel foam by tuning the molar ratio of KMnO_(4)to Co(NO_(3))_(2)·6H_(2)O ***,the formed Ni6MnO_(8)structure between KMn_(8)O_(16)and nickel foam during in situ synthesis process effectively protected nickel foam from further etching,which significantly enhanced the reaction stability of *** optimum amount of Co doping in KMn_(8)O_(16)was available when the molar ratio of Mn to Co species in the precursor solution was 2:*** the Mn2Co1 catalyst had abundant oxygen vacancies and excellent hydrophobicity,thus creating outstanding O_(3)decomposition *** O_(3)conversion under dry conditions and relative humidity of 65%,90%over a period of 5 hr was 100%,94%and 80%with the space velocity of 28,000 hr^(−1),*** in situ constructed Co-doped KMn_(8)O_(16)/Ni foam catalyst showed the advantages of low price and gradual applicability of the preparation process,which provided an opportunity for the design of monolithic catalyst for O_(3)catalytic decomposition.

关键词： Co-doped cryptomelane-type manganese O3 decomposition High humidity Nickel foam Monolithic catalyst

Physics-informed battery degradation prediction:Forecasting charging curves using one-cycle data

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Journal of Energy Chemistry 2025年第2期101卷 825-836页

作者： Aihua Tang Yuchen xu Jinpeng Tian Xing shu Quanqing Yu Key Laboratory of Advanced Manufacturing Technology for Automobile Parts Ministry of Education Chongqing University of Technology Department of Electrical and Electronic Engineering and Research Centre for Grid Modernization The Hong Kong Polytechnic University School of Automotive Engineering Harbin Institute of Technology

Accurately predicting battery degradation is crucial for battery system ***,due to the complexities of aging mechanisms and limitations of historical data,comprehensively indicating battery degradation solely through maximum capacity loss assessment is *** machine learning offers promising solutions,it often overlooks domain knowledge,resulting in reduced accu racy,increased computational burden and decreased ***,this study proposes a method to predict the voltage-capacity（V-Q） curve during battery degradation with limited historical *** process is achieved through two physically interpretable components:a lightweight interpretable physical model and a physics-informed neural *** components incorporate domain knowledge into machine learning to improve V-Q curve prediction performance and enhance *** validation was conducted on 52 batteries of different types under different testing *** proposed method can accurately predict future *** for hundreds of cycles using only one-present-cycle V-Q curve,with root mean square error and mean absolute error basically less than 0.035 Ah and R2basically less than 98.5%.This means that incremental capacity curves can be extracted from the predicted results for a more comprehensive and accurate battery degradation ***,the method can flexibly adjust prediction length and density to cater to the practical needs of long-cycle prediction and data *** study provides a viable method for rapid degradation prediction and is expected to be generalized to in-vehicle implementations.

关键词： Degradation prediction Lightweight interpretable physical model Lithium-ion battery Physics-informed neural network Voltage-capacity curve

Understanding the iodine electrochemical behaviors in aqueous zinc batteries

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Journal of Energy Chemistry 2025年第2期101卷 402-415页

作者： xuefang Xie Xiaoxin xu shuquan liang Guozhao Fang College of Physical Science and Technology Xinjiang University Xinjiang Key Laboratory of Solid State Physics and Devices Xinjiang University School of Materials Science & Engineering Key Laboratory of Electronic Packaging and Advanced Functional Materials of Hunan Province Central South University National Energy Metal Resources and New Materials Key Laboratory Central South University

Iodine is widely used in aqueous zinc batteries（ZBs） due to its abundant resources,low cost,and active redox *** addition to the active material in zinc-iodine batteries,iodine also plays an important role in other ZBs,such as regulating the electrochemical behavior of zinc ions,promoting the reaction kinetic and reversibility of other redox pairs,catalytic behaviors related to iodine reactions,coupling with other halogen ions,shuttle behaviors of polyiodides,***,there is currently a lack of comprehensive discussion on these ***,this review provides a comprehensive overview of the electrochemical behaviors of iodide in the aqueous *** effect of iodine ions on the Zn2+desolvation behaviors and the interfacial behaviors of Zn anode was *** redox pairs boosting other redox pairs,such as MnO2/Mn2+redox pair and vanadium redox pair to obtain high reversibility and capacity was also ***,the catalytic behaviors related to iodine reactions in aqueous ZBs,synergistic reaction with other halogen ions and suppression of shuttle behaviors for high performance zinc-iodine batteries were systematically ***,future prospects for designing effective iodine electrochemical behaviors with practicability are proposed,which will provide scientific guidance for the practical application of iodine-related aqueous ZBs.

关键词： Catalytic behavior Iodide ion Redox pairs shuttle effect Zinc batteries

Distributed State and Fault Estimation for Cyber-Physical Systems Under DoS Attacks

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IEEE/CAA Journal of Automatica Sinica 2025年第1期12卷 261-263页

作者： Limei liang Rong Su Haotian xu the School of Control Science and Engineering Shandong University IEEE the School of Electrical and Electronic Engineering Nanyang Technological University

Dear Editor,The letter deals with the distributed state and fault estimation of the whole physical layer for cyber-physical systems(CPSs) when the cyber layer suffers from DoS attacks. With the advancement of embedded computing, communication and related hardware technologies, CPSs have attracted extensive attention and have been widely used in power system, traffic network, refrigeration system and other fields.

关键词： Observers Estimation error Sensors Physical layer Sensor systems Security Power system stability

Superhydrophobic and corrosion-resistant siloxane-modified MgAl-LDHs coatings on magnesium alloy prepared under mild conditions

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 450-463页

作者： Wenxi Zhang Zhangzelong Zhuo Dan xu liang Wu Zhihui Xie Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province College of Chemistry and Chemical EngineeringChina West Normal UniversityNanchong 637002China College of Materials Science and Engineering/National Engineering Research Center for Magnesium Alloys Chongqing UniversityChongqing 400044China

We have developed a superhydrophobic and corrosion-resistant LDH-W/PFDTMS composite coating on the surface of Mg *** composite comprised a tungstate-intercalated(LDH-W)underlayer that was grown at low temperature(relative to hydrothermal reaction conditions)under atmospheric pressure and an outer polysiloxane layer created from a solution containing perfluorodecyltrimethoxysilane(PFDTMS)using a simple immersion *** successful intercalation of tungstate into the LDH phase and the following formation of the polysiloxane layer were confirmed through X-ray diffraction(XRD),Fourier transform infrared(FTIR)spectroscopy,and X-ray photoelectron spectroscopy(XPS).The corrosion resistance of the LDH-W film,both before and after the PFDTMS modification,was evaluated using electrochemical impedance spectroscopy(EIS),Tafel curves,and immersion *** results showed that Mg coated with LDH-W/PFDTMS exhibited significantly enhanced corrosion protection compared to the unmodified LDHW film,with no apparent signs of corrosion after exposure to 3.5wt%NaCl solution for 15 ***,the LDH-W/PFDTMS coating demonstrated superior superhydrophobicity and self-cleaning properties against water and several common beverages,as confirmed by static contact angle and water-repellency *** results offer valuable insights into preparing superhydrophobic and corrosion-resistant LDH-based composite coatings on Mg alloy surfaces under relatively mild reaction conditions.

关键词： Mg alloy corrosion coating layered double hydroxide

Least Square Estimation for Multiple Functional Linear Model with Autoregressive Errors

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Acta Mathematicae Applicatae Sinica 2025年第1期41卷 84-98页

作者： Meng WANG Ming-liang shu Jian-jun ZHOU Si-xin WU Min CHEN School of Management University of Science and Technology of ChinaHefei 230026China Academy of Mathematics and System Science Chinese Academy of SciencesBeijing 100190China Yunnan Key Laboratory of Statistical Modeling and Data Analysis Yunnan UniversityKunming 650091China

As an extension of linear regression in functional data analysis, functional linear regression has been studied by many researchers and applied in various fields. However, in many cases, data is collected sequentially over time, for example the financial series, so it is necessary to consider the autocorrelated structure of errors in functional regression background. To this end, this paper considers a multiple functional linear model with autoregressive errors. Based on the functional principal component analysis, we apply the least square procedure to estimate the functional coefficients and autoregression coefficients. Under some regular conditions, we establish the asymptotic properties of the proposed estimators. A simulation study is conducted to investigate the finite sample performance of our estimators. A real example on China's weather data is applied to illustrate the validity of our model.

关键词： multiple functional linear model autoregressive errors principal component analysis consistency

Photo-controllable multiple and orthogonal regulation of gene expression by chemically modified oligonucleotides

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Science China Chemistry 2025年第2期68卷 694-704页

作者： Yang Wang Qiu-Long Zhang Yan Liu liang-liang Wang Chao-Qun Wu Ming Shao Xiwen Xing Juan Du liang xu Key Laboratory of Tropical Biological Resources of Ministry of Education and One Health Institute School of Pharmaceutical SciencesHainan UniversityHaikou 570228China Central Laboratory Department of The Second Affiliated Hospital School of MedicineThe Chinese University of Hong KongShenzhen&Longgang District People’s Hospital of ShenzhenShenzhen 518172China MOE Key Laboratory of Bioinorganic and Synthetic Chemistry School of ChemistrySun Yat-sen UniversityGuangzhou 510275China Department of Biotechnology College of Life Science and TechnologyJinan University InstitutionGuangzhou 510632China School of Pharmacy and Medical Technology Putian UniversityPutian 351100China

Gene expression must be precisely regulated in cells and functional nucleic acids are the most widely utilized tools for gene *** of how these nucleic acid tools work in the cellular environment can precisely manipulate gene expression through a non-invasive *** we report a methodology on multiplex photocontrol of functional nucleic acids to achieve totally temporal and orthogonal regulation of gene expression in living *** select two functional nucleic acid systems as examples,DNAzyme and CRISPR/Cas9,and demonstrate the power of light control for precise gene manipulation by rational design of chemically modified oligonucleotides through introduction of two photocleavable *** the previous modulation of functional nucleic acids by simply activating or deactivating,we successfully achieve versatile controlling patterns using light as the governing *** design represents a generalized pathway towards the photo-controllable functional nucleic acids,which greatly enriches the toolbox for optogenetic studies.

关键词： functional nucleic acids optogenetics modified oligonucleotides gene technology

Optimizing frequency allocation for superconducting quantum processors with frequency-tunable qubits

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Science China(Physics,Mechanics & Astronomy) 2025年第2期68卷 23-36页

作者： Bi-Ying Wang Wuxin Liu Xiangyu Chen shu xu Jiangyu Cui Man-Hong Yung Quantum Science Center of Guangdong-Hong Kong-Macao Greater Bay Area(Guangdong) Shenzhen518129China Shenzhen Institute for Quantum Science and Engineering Southern University of Science and TechnologyShenzhen518055China International Quantum Academy Shenzhen518048China Guangdong Provincial Key Laboratory of Quantum Science and Engineering Southern University of Science and TechnologyShenzhen518055China Shenzhen Key Laboratory of Quantum Science and Engineering Southern University of Science and TechnologyShenzhen518055China

As superconducting quantum processors scale,a key challenge is maintaining high coherence times and fidelity control over numerous *** propose an automatic frequency allocation method for frequency-tunable qubits that equally considers coherence-limited fidelity and crosstalk-induced control errors during the allocation *** employing a weighted average of the objective functions for coherence time and crosstalk,we numerically calculate gate fidelity to establish an open-loop optimization for determining suitable weight *** results in an efficient objective function for frequency *** apply our method to frequency-tunable transmon qubits with tunable couplers,both theoretically and *** numerical results demonstrate significant advantages,including substantial reductions in gate errors and faster operation times,especially at higher qubit ***,our approach successfully achieves approximately 99.9%single-qubit fidelity on a nine-qubit chip.

关键词： frequency allocation transmon qubits superconducting processors