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Cu-optimized long-range interaction between Co nanoparticles and Co single atoms:Improved Fenton-like reaction activity

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science Bulletin 2024年第16期69卷 2529-2542页

作者： Fan Mo Zelin Hou Qixing Zhou Xixi Chen Weitao Liu Wendan Xue Qi Wang Jianling Wang Tong Zheng Zongxin Tao Key Laboratory of Pollution Processes and Environmental Criteria(Ministry of Education)/Tianjin Key Laboratory of Environmental Remediation and Pollution Control Carbon Neutrality Interdisciplinary Science CenterCollege of Environmental Science and EngineeringNankai UniversityTianjin 300350China National Engineering Research Center of Pesticide Nankai UniversityTianjin 300350China

The interplay between multi-atom assembly configurations and single atoms(SAs)has been gaining attention in ***,the effect of long-term range interactions between SAs and multi-atom assemblies on the orbital filling characteristics has yet to be *** this context,we introduced copper(Cu)doping to strengthen the interaction between cobalt(Co)nanoparticles(NPs)and Co SAs by promoting the spontaneous formation of Co-Cu alloy NPs that tends toward aggregation owing to its negative cohesive energy(-0.06454),instead of forming Cu *** incorporation of Cu within the Co-Cu alloy NPs,compared to the pure Co NPs,significantly expedites the kinetics of peroxymonosulfate(PMS)oxidation processes on Co *** Co NPs,Co-Cu NPs facilitate electron rearrangement in the d orbitals(especially dz^(2)and dxz)near the Fermi level in Co SAs,thereby optimizing the dz^(2)-O(PMS)and dxz-O(SO_(5)^(-))orbital ***,the Co-Cu alloy NPs embedded in nitrogen-doped carbon(CC@CNC)catalysts rapidly eliminated 80.67% of 20 mg L^(-1)carbamazepine(CBZ)within 5 *** performance significantly surpasses that of catalysts consisting solely of Co NPs in a similar matrix(C@CNC),which achieved a 58.99% reduction in 5 *** quasi in situ characterization suggested that PMS acts as an electron donor and will transfer electrons to Co SAs,generating^(1)O_(2)for contaminant *** study offers valuable insights into the mechanisms by which composite active sites formed through multi-atom assembly interact at the atomic orbital level to achieve high-efficiency PMS-based advanced oxidation processes at the atomic orbital level.

关键词： Spontaneous alloying Co-Cu alloy NPs Co SAs Synergism Orbital electron filling

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High-Performance Image Compression and Reconstruction Using Lightweight Deep Neural Networks

High-Performance Image Compression and Reconstruction Using ...

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2024 Academic Conference of China Instrument and control Society, ACCIS 2024

作者： Gao, Shuhua Qin, Zekun Jiang, Xingyu Wang, Zhengfang Xu, Wenjun Wang, Jing School of Control Science and Engineering Shandong University Jinan China National University of Singapore Electrical and Computer Engineering Singapore Peng Cheng Laboratory Research Institute of MA&EI Shenzhen China

ISBN: (纸本)9798350350326

In many remote areas, tunnels, and underground spaces, network bandwidth is extremely limited. However, with the development of high-resolution cameras, the size of image data has significantly increased, making it challenging to frequently transmit large-scale images for detection and monitoring purposes. To address this issue, this paper proposes an image compression and reconstruction method based on lightweight neural networks, utilizing a dual-module deep learning architecture comprising a Compressed Convolutional Neural Network (CCNN) and a Reconstructed Convolutional Neural Network (RCNN). The lightweight design facilitates easy deployment on edge devices. The CCNN module compresses the original image for fast network transmission, and upon reception, the RCNN module reconstructs the image. This approach significantly reduces the transmission payload and enhances speed under limited bandwidth conditions. Furthermore, the developed method outperforms the classic JPEG algorithm across four representative metrics as evaluated on a widely-used public dataset. To further optimize the CCNN for edge deployment, a model distillation technique is employed, reducing the model size by approximately 70% with negligible performance impact. In summary, the proposed deep neural network model offers high performance and a low memory footprint for image compression and reconstruction, making it particularly suitable for resourcelimited edge devices and bandwidth-constrained applications. © 2024 IEEE.

关键词： Convolutional neural networks

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Estimating the Probability of Falling Share Price Below the Minimum Level 9

Estimating the Probability of Falling Share Price Below the ...

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9th International Conference on control, Decision and Information Technologies, CoDIT 2023

作者： Semakov, Sergei L. Moscow Institute of Physics and Technology Faculty of Control and Applied Mathematics Russia Moscow Automobile and Road Construction Institute Department of Mathematics Russia Federal Research Center 'Computer Science and Control' of the Russian Academy of Sciences Russia

ISBN: (纸本)9798350311402

A technology is proposed for estimating the probability that a share price will fall below the minimum level. The exact expression is obtained for the required probability under the assumption that the behavior of the share price is described by the well-known model of Samuelson, according to which the relative change in price is the sum of the non-random trend and the Wiener process. The obtained result is qualitatively analyzed for various relations of the problem parameters. © 2023 IEEE.

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Reconciling constraints from the supernova remnant HESS J1731-347 with the parity doublet model

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Physical Review C 2024年第6期109卷 065807-065807页

作者： Bikai Gao Yan Yan Masayasu Harada Department of Physics School of Microelectronics and Control Engineering Kobayashi-Maskawa Institute for the Origin of Particles and the Universe Advanced Science Research Center

The recent discovery of a central compact object (CCO) within the supernova remnant HESS J1731-347, characterized by a mass of approximately 0.77−0.17+0.20 M⊙ and a radius of about 10.4−0.78+0.86 km, has opened up a new window for the study of compact objects. This CCO is particularly intriguing because it is the lightest and smallest compact object ever observed, raising questions and challenging the existing theories. To account for this light compact star, a mean-field model within the framework of the parity doublet structure is applied to describe the hadron matter. Inside the model, part of the nucleon mass is associated with the chiral symmetry breaking while the other part is from the chiral invariant mass m0 which is insensitive to the temperature and density. The value of m0 affects the nuclear equation of state for uniform nuclear matter at low density and exhibits strong correlations with the radii of neutron stars. We point out that HESS J1731-347 can be explained as the lightest neutron star for m0≃850 MeV.

关键词： Asymmetric nuclear matter Equations of state of nuclear matter Nuclear matter in neutron stars Nuclear physics of explosive environments Chiral symmetry

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A Reliability Evaluation Method for Zero-Failure Products Based on Moment-Entropy Normalization 6

A Reliability Evaluation Method for Zero-Failure Products Ba...

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6th International Conference on System Reliability and Safety engineering, SRSE 2024

作者： Kong, Xiangrui Sun, Yongquan Tang, Qing An, Zijian Qi, Jia Guo, Kangkang Harbin University of Science and Technology School of Measurement-Control Technology and Communications Engineering Harbin China China Lnstitute of Marine Technology and Economy Quality and Reliability Center Beijing China

ISBN: (纸本)9798350356083

This paper addresses the challenge of reliability evaluation for small-sample and zero-failure data by introducing a method that integrates Bayesian theory with curve fitting. Initially, we employ the moment-entropy normalization method to determine the hyperparameters of the Beta distribution. This approach incorporates data from similar products, effectively overcoming the limitations posed by small sample sizes. Next, we use a Bayesian method to merge data from similar products with the current product data. By treating the likelihood function as binomial with zero failures, we accurately estimate parameters and improve the precision of reliability assessments. This enables us to obtain point estimates of failure probabilities at different time points and determine the upper confidence limits of failure probabilities at a given confidence level. Furthermore, we introduce the Weibull distribution as a life distribution model and apply curve fitting to estimate the Weibull parameters and their lower confidence limits, further enhancing the robustness of our reliability estimates. Finally, the proposed Bayesian method demonstrates strong practical applicability in case studies, providing valuable insights for the design and testing of reliable products. © 2024 IEEE.

关键词： Weibull distribution

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SURROGATE-ASSISTED HIERARCHICAL OPTIMIZATION METHOD FOR VARIABLE SWEEP FLIGHT VEHICLE TRAJECTORY 34th

SURROGATE-ASSISTED HIERARCHICAL OPTIMIZATION METHOD FOR VARI...

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34th Congress of the International Council of the Aeronautical sciences, ICAS 2024

作者： Ye, Nianhui Long, Teng Fu, Bo Shi, Renhe School of Aerospace Engineering Beijing Institute of Technology Beijing China Key Laboratory of Dynamics and Control of Flight Vehicle Ministry of Education China Xi’an Modern Control Technology Research Institute Xian China Beijing Institute of Technology Chongqing Innovation Center Chongqing China

Morphing flight vehicles can adaptively change the configuration to achieve favorable aerodynamic performance for different flight conditions, which has attracted much attention in recent years. As the most crucial procedure, the trajectory design generally determines the morphing flight vehicle performance. To sufficiently improve the flight range, a surrogate-assisted hierarchical optimization method is developed for the variable sweep flight vehicle trajectory, which consists of inner and external optimization processes. In the inner optimization process, the trajectory is optimized by the pseudospectral method to maximize the flight range, where the angle of attack and sweep angle change rates are selected as the control variables. Compared with the fixed wing, the variable sweep wing can extend the total range by 6.79%. In the external optimization process, the boundary states of different trajectory phases (i.e., initial trajectory angle of each phase, terminal trajectory angle and velocity) are optimized to further increase the flight range. Considering the time-consuming inner optimization process, a Kriging surrogate-assisted differential evolution method is adopted to execute the external optimization efficiently and effectively. After the external optimization, the total range can be further increased by 15.86% compared with the initial morphing flight vehicle trajectory. © 2024, International Council of the Aeronautical sciences. All rights reserved.

关键词： Fixed wings

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Artificial-intelligent-powered safety and efficiency improvement for controlling and scheduling in integrated railway systems

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High-Speed Railway 2024年第3期2卷 172-179页

作者： Jun Liu Gehui Liu Yu Wang Wanqiu Zhang Beijing National Railway Research&Design Institute of Signal&Communication Group Co.Ltd. Beijing 100070China Engineering Research Center of Railway Industry of Intelligent and Autonomous Train Control Beijing 100070China

The multi-mode integrated railway system,anchored by the high-speed railway,caters to the diverse travel requirements both within and between cities,offering safe,comfortable,punctual,and eco-friendly transportation *** the expansion of the railway networks,enhancing the efficiency and safety of the comprehensive system has become a crucial issue in the advanced development of railway *** light of the prevailing application of artificial intelligence technologies within railway systems,this study leverages large model technology characterized by robust learning capabilities,efficient associative abilities,and linkage analysis to propose an Artificial-intelligent(AI)-powered railway control and dispatching *** system is elaborately designed with four core functions,including global optimum unattended dispatching,synergetic transportation in multiple modes,high-speed automatic control,and precise maintenance decision and *** deployment pathway and essential tasks of the system are further delineated,alongside the challenges and obstacles *** AI-powered system promises a significant enhancement in the operational efficiency and safety of the composite railway system,ensuring a more effective alignment between transportation services and passenger demands.

关键词： High-speed railway Multi-mode railway system Artificial intelligence Large-scale mode,system framework Safety and efficiency improvement

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Weakened Generalized Precedents in Problems of Searching for Informative Aspects of Data 10

Weakened Generalized Precedents in Problems of Searching for...

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10th International Conference on Information Technology and Nanotechnology, ITNT 2024

作者： Ryazanov, Vladimir Vinogradov, Alexander Angalt, Elena Russian Academy Of Sciences Federal Research Center 'Computer Science And Control' Moscow Russia Orenburg State Agrarian University Department Of Forestry And Forest Park Management Orenburg Russia

ISBN: (纸本)9798350372939

Generalized Precedents (GPs) employ practical expertise when it's expressed as a pattern in data in terms of few parameters. It's a multidimensional analog of the Hough transform, so the targets are sharp peaks of the distribution in parametric space. Weakened GPs use less exact description of the sought pattern, and transfer the analysis onto the preferred shape of the secondary clusters themselves (not only peaks). It's shown that useful information can be mined this way exceptionally on the base of some natural a priori expertise of the mentioned kind (smoothness, curvature, uniformity). © 2024 IEEE.

关键词： Hough transforms

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A nonradical oxidation process initiated by Ti-peroxo complex showed high specificity toward the degradation of tetracycline antibiotics

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Chinese Chemical Letters 2024年第5期35卷 366-370页

作者： Jian Peng Yue Jiang Shuangyu Wu Yanran Cheng Jingyu Liang Yixin Wang Zhuo Li Sijie Lin College of Environmental Science and Engineering Biomedical Multidisciplinary Innovation Research InstituteShanghai East HospitalTongji UniversityShanghai 200092China Key Laboratory of Yangtze River Water Environment Shanghai Institute of Pollution Control and Ecological SecurityTongji UniversityShanghai 200092China

Nonradical oxidation has received wide attention in advanced oxidation processes for environmental *** the relationship between material characteristics and their ability to initiate nonradical oxidation processes is the key to better material design and ***,a novel titanium-based metal-organic framework MIL-125-Ti/H_(2)O_(2) system was established to show a highly selective degradation efficacy toward tetracycline ***-125-Ti with the abundance of TiO6 octahedra units was found to effectively activate H_(2)O_(2) under dark conditions by forming an oxidative Ti-peroxo *** presence of the Ti-peroxo complex,confirmed by UV-visible spectrophotometer,fourier transform infrared spectroscopy,and X-ray photoelectron spectroscopy characterizations,showed superior degradation(>95%removal rate)of oxytetracycline hydrochloride(OTC),doxycycline hydrochloride,chlortetracycline hydrochloride,and *** functional theory calculations were performed to assist the elucidation on the mechanism of H_(2)O_(2) activation and antibiotics *** MIL-125-Ti/H_(2)O_(2) system was highly resistant to halogens and background organics,and could well maintain its original catalytic activity in actual water *** retained the ability to degrade 75%of OTC within ten test *** study provides new insight into the nonradical oxidation process initiated by the unique Ti-peroxo complex of Ti-based MOF.

关键词： Nonradical oxidation Metal-organic frameworks Advanced oxidation process Ti-peroxo complex Antibiotics degradation

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Efficient and selective recovery of Gd(Ⅲ)via polyethyleneimine modification of lanthanum-based metal-organic frameworks

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Journal of Rare Earths 2024年第1期42卷 210-219,I0007页

作者： Wenhao Li Lijinhong Huang Bin Xiao Xiaoguang Duan Haike Li Lang Li Wanfu Huang Ganzhou Key Laboratory of Basin Pollution Simulation and Control Jiangxi University of Science and TechnologyGanzhou341000China Innovation Center for Water Quality Security Technology at Ganjiang River Basin Jiangxi University of Science and TechnologyGanzhou341000China Faculty of Science and Engineering WA School of Mines:MineralsEnergy and Chemical EngineeringCurtin UniversityWAAustralia School of Architecture and Design Jiangxi University of Science and TechnologyGanzhou341000China School of Resources and Architectural Engineering Gannan University of Science and TechnologyGanzhou341000China School of Chemical Engineering and Advanced Materials The University of AdelaideAdelaideSA5005Australia School of Resource and Environmental Engineering Jiangxi University of Science and TechnologyGanzhou341000China

With the development of the economy and the increasing demand for environmental protection,the efficient and selective recovery of Gd(Ⅲ)from actual wastewater is of critical *** this work,lanthanum-based metal-organic framework(LaBDC)materials were prepared by a hydrothermal method,and then polyethyleneimine(PEI)and LaBDC were combined by an impregnation method to form a novel LaBDC@xPEI *** prepared materials were characterized using Fourier transfo rm infrared spectroscopy(FTIR),X-ray diffraction(XRD),scanning electron microscopy(SEM),energy dispersive X-ray spectroscopy(EDX),B runauer-Emmett-Teller(BET),thermogravimetric analysis(TGA)and X-ray photoelectron spectroscopy(XPS).Experiments show that LaBDC@50%PEI has the highest adsorption capacity(181.77 mg/g)among lanthanum-based MOFs with different PEI loadings at pH=5.5,which is about 5.1 times that of bare *** adsorption isotherm analysis shows that LaBDC@50%PEI follows the Langmuir *** addition,the adsorption kinetics of LaBDC@50%PEI follows a pseudo-second-order kinetic model,indicating that the adsorption process is chemical *** is worth noting that LaBDC@50%PEI maintains good adsorption performance and stability after three recycling tests,and exhibits excellent selectivity in cation interference ***,the LaBDC@50%PEI composites possess good stability and hold great promises in rapid recovery of Gd(Ⅲ)from practical aqueous environments.

关键词： Wet-impregnation method Polyethylene imine Metaleorganic frameworks Lanthanum Recovery of Gd(Ⅲ) Rare earths

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