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development paradigms of cyberspace endogenous safety and security

Science China(Information Sciences) 2022年第5期65卷 264-266页

作者： Jiangxing WU National Digital Switching System Engineering & Technological R&D Center

Scientifc interpretation of paradigm. The concept and theory of paradigm were first proposed by Thomas Kuhn, a famous American science philosopher, and were systematically described in his book “The Structure of Scie... 详细信息

关键词： cyberspace endogenous security ubiquitous problem unknown unknown security threats relatively-correct axiom dynamic heterogeneous redundancy architecture cyberspace endogenous safety and security development paradigm

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Accelerating the transition to cobalt-free batteries:a hybrid model for LiFePO_(4)/graphite chemistry

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npj Computational Materials 2024年第1期10卷 3101-3112页

作者： Gabriele Pozzato Xueyan Li donghoon Lee Johan Ko Simona Onori Energy Science and Engineering Stanford UniversityStanfordCA 94305USA Assistant Manager Research TeamTech CenterLG Energy Solution MichiganTroyMI 48083USA Specialist Data Modeling Algorithm TeamBattery R&DLG Energy SolutionDaejeon R&D Campus34122 KoreaSouth Korea Professional Data Modeling Algorithm TeamBattery R&DLG Energy SolutionGwacheon R&D Campus13818 KoreaSouth Korea

The increased adoption of lithium-iron-phosphate batteries,in response to the need to reduce the battery manufacturing process’s dependence on scarce minerals and create a resilient and ethical supply chain,comes with many *** design of an effective and high-performing battery management system(BMS)for such technology is one of those *** this work,a physics-based model describing the two-phase transition operation of an iron-phosphate positive electrode—in a graphite anode battery—is integrated with a machine-learning model to capture the hysteresis and path-dependent behavior during transient *** machine-learning component of the proposed“hybrid”model is built upon the knowledge of the electrochemical internal states of the battery during charge and discharge operation over several driving *** hybrid model is experimentally validated over 15 h of driving,and it is shown that the machine-learning component is responsible for a small percentage of the total battery behavior(i.e.,it compensates for voltage hysteresis).The proposed modeling strategy can be used for battery performance analysis,synthetic data generation,and the development of reduced-order models for BMS design.

关键词： battery driving hysteresis

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The different structure and properties of protic ionic liquid in alcohol from acid and base:butylammonium butyrate mixing with butanol, butyric acid,and butylamine respectively

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Green Chemical engineering 2025年第1期6卷 85-92页

作者： Xuan Zhang Yue Zhang Haoran Li Jia Yao Department of Chemistry Zhejiang University ZJU-NHU United R&D Center Zhejiang University State Key Laboratory of Chemical Engineering College of Chemical and Biological Engineering Zhejiang University

Solvents are commonly added into protic ionic liquids（PILs） to reduce viscosity in practical *** the relationship between the structure and properties of PILs mixed with solvents is also essential for tailoring specific applications,however,such research is *** this study,we measured and compared the density,viscosity,and conductivity of three mixed systems:n-butylammonium butyrate ionic liquid（PIL） mixing with N-butyric acid（PrCOOH）,PIL-N-butylamine（BuNH2）,and PIL-N-butanol（BuOH）.Small-and wide-angle Xray scattering（S/WAXS）,molecular dynamics（Md） simulation,and electron paramagnetic resonance（EPr）techniques were used to explore their inherent structural *** results indicate that the properties of the PIL-BuOH and PIL-PrCOOH systems exhibit more overall similarity in trends compared to the ***,when the molar fraction of alcohol or acid exceeds 0.8,structural differences between the two systems lead to the differences in *** hydrogen bond network between the BuOH molecules outside the ion cluster leads to higher viscosity and conductivity than the PIL-PrCOOH ***,the strong hydrogen bond between PrCOOH and anions will replace the position of cations and form spherical *** research highlights how distinct structures influence diverse properties,providing deeper insights into the structure-property relationship.

关键词： Protic ionic liquids solution Microstructure Properties Hydrogen bond Confinement effects

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A Prediction Method for Bike-sharing Time Series Based on K-means Clustering and Gaussian Process regression 5

A Prediction Method for Bike-sharing Time Series Based on K-...

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5th International Symposium on Computer engineering and Intelligent Communications, ISCEIC 2024

作者： Liu, Xuehao Liu, Wenxue Yang, Chaosan Xu, Can Zhu, Wenjing Li, Jinhai Imecas Communications and Information Engineering R&d Center Beijing China

ISBN: (纸本)9798331518677

real-time usage prediction for shared bikes has important significance in intelligent transportation and travel management. In this paper, a time series prediction method for shared bikes based on K-means clustering and Gaussian process regression (GPr) is proposed. The method transforms the shared bikes time series into multiple subsequences through sliding window method to ensure that the time information is not lost in the GPr prediction process. By applying K-means clustering to select inducing points, data sparsity is achieved, and the selected points are used in the training of GPr model to achieve real-time usage prediction. Experimental results indicate that the proposed method effectively captures short-term trends and periodic characteristics in the time series, and significantly reduce the computational complexity compared with the traditional GPr model, while improving the training efficiency and generalization ability of the model. © 2024 IEEE.

关键词： Bicycles

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Enhanced dielectric properties and thermal stability of BaTiO₃ ceramics sintered in a reducing atmosphere through MnNb₂O₆ doping

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Ceramics International 2025年第15期51卷 19910-19922页

作者： Hsu, Hsuan-Jung Yang, Kai Hsun Hsiang, Hsing-I Department of Resources Engineering National Cheng Kung University Tainan70101 Taiwan R&D Center YAGEO Corporation Kaoshiung83162 Taiwan

This study investigated the effects of MnNb₂O₆ addition on the dielectric properties of BaTiO₃ ceramics sintered in a reducing atmosphere. BaTiO₃ ceramics are known for their excellent dielectric properties, making them essential for various electronic applications, particularly in multilayer ceramic capacitors (MLCCs). However, sintering in a reducing atmosphere often leads to the formation of oxygen vacancies and Ti³⁺ ions, which degrade the material's dielectric properties and reliability. To mitigate these issues, MnNb₂O₆ was introduced as a dopant to BaTiO₃ ceramics. The results demonstrated that MnNb₂O₆ significantly reduced the formation of oxygen vacancies, leading to lower electronic conductivity and dielectric loss. Additionally, the doped ceramics exhibited higher insulation resistance and improved thermal stability, maintaining consistent dielectric properties across a wide temperature range. The study further highlights the benefits of donor-acceptor codoping in enhancing the material's stability. Codoping with Mn2⁺ and Nb⁵⁺ ions balanced the charge within the BaTiO₃ lattice, forming a stable defect complex of the form (Nb−Mn−Nb)TiX that suppressed the formation of oxygen vacancies. This approach resulted in a more uniform microstructure and reduced grain boundary conductivity, thereby significantly improving the dielectric properties and long-term reliability of the ceramics under high-temperature and reducing conditions. This study provides valuable insights into the mechanisms by which MnNb₂O₆ improves the performance of BaTiO₃ ceramics, paving the way for the development of high-performance dielectric materials. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Grain boundaries

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Ginger polysaccharide UGP1 suppressed human colon cancer growth via p53,Bax/Bcl-2,caspase-3 pathways and immunomodulation

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Food Science and Human Wellness 2023年第2期12卷 467-476页

作者： Yanfang Qian Chenying Shi Chen Cheng dengwei Liao Junping Liu Guitang Chen College of Engineering/National R&D Center for Chinese Herbal Medicine Processing China Pharmaceutical UniversityNanjing 211198China

In previous study,we got a purified ginger polysaccharide UGP1 and verified its significant antitumor activities on colon cancer HCT116 *** this article,we aimed to illustrate the underlying mechanism of UGP1 exerted antitumor activities on colon cancer by using in vitro cell models and in vivo animal *** results demonstrated that UGP1 could induce S-phase cell cycle arrest,up-regulate the expression of Bax and p53,down-regulate the expression of Bcl-2,and activate the downstream protein caspase-9 and caspase-3,which was related to intrinsic apoptosis pathway on HCT116 ***,UGP1 significantly stimulated rAW264.7 cell proliferation and secretion ***,UGP1 inhibited tumor proliferation on tumor-bearing mice,increased the expression of p53 and the ratio of Bax/Bcl-2,enhanced the secretion of pro-inflammatory cytokines TNF-α,IL-2,IL-6 and decreased the secretion of pro-tumor cytokines TGF-βand b FGF in *** conclusion,it indicated that the UGP 1 could sup press human colon cancer growth by inducing apoptosis via the regulation of p53,caspase-3,and Bax/Bcl-2 ratio-dependent pathway and regulating immune system *** s investigation provided basic theoretical mechanism of ginger polysaccharideexerted antitumor activities,and contributed to develop a possible functional food or adjuvant agent for prevention or treatment of colon cancer.

关键词： Ginger polysaccharide Apoptosis p53 Bcl-2 Immunomodulation

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Cross-Coupling Sliding Mode Control of dual-VLFPM Motors distributed Cooperative Sensorless drive System With Linear ESO

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IEEE Transactions on Transportation Electrification 2025年第3期11卷 8641-8652页

作者： Zhu, Xiaoyong Huang, Tangyou Zhang, Li dong, Wenliang Chen, Wen-Hua Jiangsu University School of Electrical and Information Engineering Zhenjiang212013 China United Automotive Electronics Suzhou R&D center Suzhou215000 China

To improve the synchronization performance for the double variable leakage flux permanent magnet (VLFPM) motors drive control system of electric vehicles (EVs), this paper presents sensorless cooperative drive control strategies from the perspective of sensorless control and cooperative control. due to the variable saliency characteristics and complex harmonics interference of the VLFPM motor, the estimation accuracy of the rotor position with the conventional sensorless will be greatly reduced. Hence, the rotor position observation and harmonics suppression methods are designed by a third-order linear extended state observer and state compensator in this paper. Furthermore, for improving the dynamic and steady-state performance of sensorless cooperative control, the sliding mode control (SMC) with a novel variable-speed exponential reaching law (VSErL) is proposed to optimize the cross-coupling control structure. Therefore, the proposed algorithms for the dual VLFPM motor drive control system have good estimation performance at low-speed regions, strong robustness to motor parameters and load disturbance, and good synchronization performance under different operating conditions. The experimental results verify the feasibility and effectiveness of the proposed double VLFPM motors sensorless cooperative drive control strategy. © 2015 IEEE.

关键词： Permanent magnets

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Case retrieval Strategy of Turning Process Based on Grey relational Analysis

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Computer Modeling in engineering & Sciences 2024年第2期138卷 1663-1678页

作者： Jianfeng Zhao Yunliang Huo Ji Xiong Junbo Liu Zhixing Guo Qingxian Li School of Mechanical Engineering Sichuan UniversityChengdu610065China Sichuan Engineering Technology Research Center of Intelligent Design and Service for Cutting Tools Yibin R&D Park of Sichuan UniversityYibin644000China Department of R&D Pengxi Heye High-Tech Co.Ltd.Suining629000China

To solve the problem of long response time when users obtain suitable cutting parameters through the Internet based platform,a case-based reasoning framework is ***,a Hamming distance and Euclidean distance combined method is designed to measure the similarity of case features which have both numeric and category *** addition,AHP(Analytic Hierarchy Process)and entropy weight method are integrated to provide features weight,where both user preferences and comprehensive impact of the index have been *** relation analysis is used to obtain the similarity of a new problem and alternative ***,a platform is also developed on Visual Studio 2015,and a case study is demonstrated to verify the practicality and efficiency of the proposed *** method can obtain cutting parameters which is suitable without iterative *** with the traditional PSO(Particle swarm optimization algorithm)and GA(Genetic algorithm),it can obtain faster response *** method can provide ideas for selecting processing parameters in industrial *** guaranteeing the characteristic information is similar,this approach can select processing parameters which is the most appropriate for the production process and a lot of time can be saved.

关键词： CBr turning process grey relation AHP entropy weight

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Interior noise prediction of inter-coach space of high-speed maglev trains based on wavenumber decomposition on aerodynamic excitation

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Noise and Vibration Worldwide 2024年第6-7期55卷 304-321页

作者： Wang, rusi Huang, Jingyu Institute of Rail Transit Tongji University Shanghai China National Maglev Transportation Engineering R&D Center Tongji University Shanghai China

Current research on noise and vibration control of high-speed maglev trains pays more attention to far-field noise, while the level of interior noise has a direct impact on the ride comfort and should be placed equal weight on. In this paper, inter-coach space, one of the main pressure fluctuation sources of a specific type of high-speed maglev train with a design speed of 600 km·h−1, is taken as the research object. The turbulent and acoustic components of wall pressure fluctuations (WPF) are separated based on a wavenumber-frequency analysis approach, and then each component is applied as different forms of source input to the vibroacoustic model, namely, finite element method-boundary element method (FEM-BEM) and statistical energy analysis (SEA) for low- and high-frequency ranges respectively, to investigate the contribution of both components to interior acoustic cavity in all frequency range. It can be seen quantitatively from the results that the amplitude of turbulent component is generally much higher than that of the acoustic one, but it can be vice versa when it comes to the interior response. The conclusion drawn in this paper are able to provide guidance for future researches on more targeted interior noise control of high-speed maglev trains. © The Author(s) 2024.

关键词： Boundary element method

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Pitting corrosion initiated by SiO_(2)-MnO-Cr_(2)O_(3)-Al_(2)O_(3)-based inclusions in a 304 stainless steel

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Journal of Iron and Steel research International 2024年第9期31卷 2281-2293页

作者： Jin-zhen Hu Shi Li Ji Zhang Ying ren Li-feng Zhang School of Metallurgical and Ecological Engineering University of Science and Technology Beijing(USTB)Beijing100083China School of Mechanical Engineering Yanshan UniversityQinhuangdao066004HebeiChina Stainless Steel R&D Center of Central R&D Institute Baoshan Iron and Steel Co.Ltd.Shanghai201900China School of Mechanical and Materials Engineering North China University of TechnologyBeijing100144China

The influence of the aluminum content on the pitting corrosion of a 304 stainless steel by a Cl−solution was *** number,area,and composition of non-metallic inclusions were modified by the addition of aluminum in the steel,which was responsible for the variation of the corrosion degree of the 304 stainless *** detection,corrosion test,electrochemical test,thermodynamic calculation,and first-principles calculation were performed to evaluate the pitting corrosion of the stainless *** initiation of the pitting corrosion by three types of inclusions,including(Mn,Si,Cr,S)O,(Mn,Al,Cr)O,and Al_(2)O_(3)were in-situ *** corroding for 880 min,the corrosion index of(Mn,Si,Cr,S)O,(Mn,Al,Cr)O,and Al_(2)O_(3)was 0.38%,0.02%,and 0.00%min−1,*** the increase in aluminum content in the steel,the pitting potential of the stainless steel was 0.131,0.304,and 0.338 V,respectively,indicating that a higher aluminum content in the steel was beneficial to improving the pitting corrosion resistance of the 304 stainless steel.

关键词： Pitting corrosion 304 stainless steel Non-metallic inclusion First-principles calculation Galvanic corrosion

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